Patent Publication Number: US-2019184594-A1

Title: Die cutter holding and lifting apparatus

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims priority to Provisional Application No. 62/599,290, filed Dec. 15, 2017, which is herein incorporated by reference in its entirety. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to systems, devices, and methods for use with cutting, punching, or stamping metal components for jewelry making. In particular the present disclosure relates to systems, devices, and methods for use with a variety of commercially available die cutters that facilitate the cutting, punching, or stamping of metal components for jewelry. 
     BACKGROUND 
     There exists a strong market for manufacturing and crafting tools for use by crafters, including jewelers. While components can be purchased off-the-shelf, a number of crafters opt to make their own components or purchase them from other crafters. 
     Metal discs, also referred to as stampings, occupy a large category of jewelry components. Ready-made stampings are available, but are more expensive than making stampings on one&#39;s own. However, making stampings requires an individual to possess or acquire appropriate tooling, which is also an added expense and varies wildly depending on the tooling type and design. Traditional jewelry die cutters are relatively inexpensive and widely available, but remain inconvenient for high volume production. 
     Die cutters generally include an upper die plate, a lower die plate, one or more guide pins, a clamping mechanism, and/or one or more punches. In operation, a piece of material is placed between the top plate and bottom die plates, and a mechanism—generally a screw—operates to close and secure the top and bottom die plates such that the material being punched is immobilized. A punch is inserted into a guide hole in the top plate and struck with a mallet or pushed through the material with a press. In most cases, the punched material and punch drop out of the bottom of the die cutter, requiring the die cutter to be lifted to retrieve the punched material and punch. To advance the stock material so that another component can be produced, the top and bottom die plates are separated so that the material can be properly advanced for the next component to be punched. In cases where a screw operates to secure the top and bottom die plates, the screw must be rotated to allow for separation of the top and bottom die plates. This process is repeated for each additional part sought to be produced. Thus, while inexpensive and simple to use, traditional die cutters like those described above have limited productivity in terms of parts per unit of time. 
     SUMMARY 
     According to one example, (“Example 1”), a die cutter holding and lifting system includes a base, a riser, a plurality of adjustable stop bars coupled to the riser and configured to position and secure a die cutter to the base, a separation assembly configured to couple to the die cutter and transitionable between an open configuration and a closed configuration, and an actuation assembly coupled to the base and engaging the separation assembly to cause the separation assembly to transition between the open and closed configurations. 
     According to another example, (“Example 2”) further to Example 1, the system further includes a die cutter having a first die plate and a second die plate. 
     According to another example, (“Example 3”) further to Example 2, the first die plate is secured to the riser between the first and second stop bars. 
     According to another example, (“Example 4”) further to Example 3, the first stop bar includes a wedge clamp, wherein the first wedge clamp is engaged with the first die plate to secure the first die plate between the first and second stop bars and to the riser. 
     According to another example, (“Example 5”) further to Example 3, the separation assembly is coupled to the second die plate such that the separation assembly is moveable relative to the first die plate. 
     According to another example, (“Example 6”) further to Example 5, when transitioned to the open configuration, the separation assembly causes a separation between the first and second die plates. 
     According to another example, (“Example 7”) further to Example 1, the separation assembly includes an axial member configured to be coupled to the die cutter, a retention member coupled to the axial member, and a biasing member situated along the axial member in an abutting relationship with the retention member. 
     According to another example, (“Example 8”) further to Example 7, the axial member is coupled to a first die plate of a die cutter such that the axial member and the first die plate are moveable relative to a second die plate of the die cutter. 
     According to another example, (“Example 9”) further to Example 8, the actuation assembly includes a rotatable cam element that is engaged with the retention member of the separation assembly, wherein the cam element is rotatable to cause a translation of the retention member and the axial member of the separation assembly and thereby cause a transition the die cutter between the open and closed configurations. 
     According to another example, (“Example 10”) further to Example 1, the actuation assembly includes a shaft coupled to the cam element, and a lever coupled to the shaft, wherein the lever can be actuated to cause a rotation of the shaft and the cam element. 
     According to another example, (“Example 11”) a die cutter a separation assembly includes an axial member configured to be coupled to a first die plate of a die cutter, a retention member coupled to the axial member, and a biasing member situated along the axial member in an abutting relationship with the retention member and configured to abut a second die plate of the die cutter. 
     According to another example, (“Example 12”) further to Example 11, the axial member is frictionally retained in the first die plate. 
     According to another example, (“Example 13”) further to Example 11, the system further includes a first fastener coupled to the first die plate and including a first threaded portion, the axial member being threadedly engaged with the first fastener. 
     According to another example, (“Example 14”) further to Example 13, the system further includes a second fastener, wherein the first fastener further includes a second threaded portion and wherein the second fastener is threadedly engaged with the first fastener via the second threaded portion. 
     According to another example, (“Example 15”) further to Example 14, the system further includes a die cutter including the first die plate and the second die plate, wherein the second fastener is threadedly engaged with the first fastener such that a portion of the first die plate is situated between the first and second fasteners. 
     According to another example, (“Example 16”) a method includes providing a separation assembly comprising an axial member, a retention member, and a biasing member. The method further includes providing a die cutter having a first die plate and a second die plate, securing the axial member to the first die plate of the die cutter, positioning the second die plate along the axial member such that the axial member extends through a bore of the second die plate and such that the second die plate is in a sliding relationship with the axial member, disposing the biasing member about the axial member, and securing the retention member to the axial member such that the biasing member is situated between the retention member and the second die plate, and such that the biasing member is in an abutting relationship with each of the retention member and the second die plate. 
     According to another example, (“Example 17”) further to Example 16, the method further includes providing a holding and lifting apparatus including a base, a riser coupled to the base, a plurality of stop bars coupled to the riser, and an actuation assembly including a cam element that is rotatable relative to the base. The method further includes positioning the die cutter on the holding and lifting apparatus such that die cutter is supported by the plurality of stop bars and such that the separation assembly is situated adjacent the actuation assembly. 
     According to another example, (“Example 18”) further to Example 17, the separation assembly is situated such that an actuation of the actuation assembly is operable to cause the cam element to displace the axial member and the first die plate. 
     According to another example, (“Example 19”) further to Example 17, the method further includes securing one or more of the first and second die plates between the plurality of stop bars. 
     According to another example, (“Example 20”) further to Example 17, one or more of the axial member, the retention member, and the biasing member of the separation assembly extends into a bore of the riser. 
     While multiple embodiments are disclosed, still other embodiments will become apparent to those skilled in the art from the following detailed description, which shows and describes illustrative embodiments. Accordingly, the drawings and detailed description are to be regarded as illustrative in nature and not restrictive. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments, and together with the description serve to explain the principles of the disclosure. 
         FIG. 1  is a perspective view of a die holding and lifting system in combination with a die cutter, according to some embodiments. 
         FIG. 2  is an exploded view of a separation assembly in combination with a die cutter, according to some embodiments, 
         FIG. 3  is a cross section view of a separation assembly in combination with a die cutter, according to some embodiments. 
         FIG. 4  is a front view of a separation assembly in combination with a die cutter in a closed configuration, according to some embodiments. 
         FIG. 5  is a front view of a separation assembly in combination with a die cutter in an open configuration, according to some embodiments. 
         FIG. 6A  is a top view of a riser, according to some embodiments. 
         FIG. 6B  is a front view of a riser, according to some embodiments. 
         FIG. 6C  is a bottom view of a riser, according to some embodiments. 
         FIG. 6D  is a side view of a riser, according to some embodiments. 
         FIG. 7A  is a side view of a riser, according to some embodiments. 
         FIG. 7B  is a front view of a riser, according to some embodiments. 
         FIG. 8A  is a side view of a riser, according to some embodiments. 
         FIG. 8B  is a front view of a riser, according to some embodiments. 
         FIG. 8C  is a top view of a riser, according to some embodiments. 
         FIG. 9  is a side view of the die holding and lifting system in combination with a die cutter of  FIG. 1 , according to some embodiments. 
         FIG. 10  is a top view of the die holding and lifting system in combination with a die cutter of  FIG. 1 , according to some embodiments. 
         FIG. 11  is a front view of the die holding and lifting system in combination with a die cutter of  FIG. 1  in a closed configuration, according to some embodiments. 
         FIG. 12  is a front view of the die holding and lifting system in combination with a die cutter of  FIG. 1  in an open configuration, according to some embodiments. 
         FIG. 13  is a front view of a die holding and lifting system in combination with the die cutter of  FIG. 1 , according to some embodiments. 
         FIG. 14  is a front view of a die holding and lifting system in combination with the die cutter of  FIG. 1  in an open configuration, according to some embodiments. 
     
    
    
     DETAILED DESCRIPTION 
     Persons skilled in the art will readily appreciate that various aspects of the present disclosure can be realized by any number of methods and apparatuses configured to perform the intended functions. It should also be noted that the accompanying drawing figures referred to herein are not necessarily drawn to scale, but may be exaggerated to illustrate various aspects of the present disclosure, and in that regard, the drawing figures should not be construed as limiting. Additionally, it should be understood by those of skill in the art that the inventive scope of the disclosure should not be limited to the particular embodiments discussed herein. 
     Various aspects of the present disclosure are directed toward systems, devices, and methods for cutting, punching, or stamping metal components for jewelry making. In particular, the present disclosure includes systems, devices, and methods for holding and separating upper and lower die plates of die cutting systems or devices during their operation to facilitate high volume production. In various embodiments, the systems, devices, and methods of the present disclosure facilitate quick temporary separation of the top and bottom die plate of a die cutting system or device that allows material situated between the top and bottom die plates to be advanced between cutting, stamping, or pressing operations without compromising the immobilization of the material being cut, stamped, or pressed during the cutting, stamping, or pressing operation. Thus, in various examples, the systems, devices, and methods of the present disclosure operate to transition a die cutting device between opened and closed configurations, wherein the material being cut, stamped, or pressed is immobilized in the closed configuration and advanceable in the open configuration. 
     Additionally, as discussed in greater detail below, in addition to use in operations where the cutting component of the die cutter is struck by a mallet, the systems, devices, and methods of the present disclosure can additionally or alternatively be integrated into or otherwise used in accordance with hydraulic, pneumatic, arbor, and other mechanical presses. 
       FIG. 1  is a perspective view of a system  1000  configured to facilitate the operation of a die cutter  2000 . The system  1000  is configured to hold the die cutter  2000  and/or maintain a position of one or more portions of the die cutter  2000  while a cutting, stamping, or pressing operation is executed. In some examples, the system  1000  is additionally configured to facilitate the separation (or lifting) of one or more die plates of the die cutter  2000  such that a material that is situated between plates of the die cutter  2000  can be advanced between cutting, stamping, or pressing operations. It will be appreciated that the system  1000  can be used in association with a material advancement system. That is, in various examples, one or more material advancement systems may be utilized to advance the stock material during the separation (or lifting) of the one or more die plates of the die cutter  2000 . In various examples, the material advancement system is timed to automatically advance the material a designated amount upon the separation (or lifting) of the one or more die plates of the die cutter  2000 . 
     In various embodiments, a die cutter generally consists of one or more die plates that include one or more guides or openings into which a punch or forming component can be inserted and driven through a stock piece of material to create a stamping, as those of skill in the art will appreciate. In some embodiments, a die cutter includes a plurality of selectively separable die plates between which the stock piece of material is situated during a cutting, stamping, or pressing operation. For example, die cutter  2000  includes an upper die plate  2100  and a lower die plate  2200 . Die cutter  2000  may be any commercially available die cutter. 
     The upper die plate  2100  is a structural component having a body  2102  and a one or more die cutter guides  2104 . The body  2102  has a top  2106 , a bottom  2108 , and an edge  2110 . In various examples, the edge is a continuous edge. For instance, in some examples, the upper die plate  2100  is cylindrical or puck-shaped and edge  2110  is a continuous circumferential edge. However, it will be appreciated that die cutters of varying shapes, sizes, and configurations can be used in accordance with the system  1000  without departing from the spirit or scope of the present application. For instance, in various examples, a die cutter includes an upper die plate that is polygonal. Thus, in various examples, the upper die plate may include an edge that is discontinuous. That is, in some examples, the upper die plate may include a plurality of discrete edges. In some examples, the discrete edges define a perimeter of the upper die plate. 
     Additionally, as mentioned above, the upper die plate has a top  2106  and a bottom  2108 . In various examples, the bottom  2108  is situated opposite the top  2106 . In various examples, the upper die plate  2100  includes one or more die cutter guides  2104 . In some examples, the one or more die cutter guides  2104  are formed as apertures in the upper die plate  2100 . That is, in some examples, the die cutter guides  2104  extend from the top  2106  to the bottom  2108  of the die plate  2100 . It will be appreciated that the die cutter guides  2104  are features into which one or more punch or forming components (not shown) can be inserted and driven through a stock piece of material (not shown) to create a stamping. It will also be appreciated that while the die cutter guides  2104  are illustrated as being cylindrical, the die cutter guides may be of any shape and size. 
     In various examples, similar to the upper die plate  2100 , the lower die plate  2200  is a structural component having a body  2202  and a one or more die cutter apertures  2204 . The body  2202  has a top  2206 , a bottom  2208 , and an edge  2210 . In various examples, the edge is a continuous edge. For instance, in some examples, the lower die plate  2200  is cylindrical or puck-shaped and edge  2210  is a continuous circumferential edge. However, it will be appreciated that die cutters of varying shapes, sizes, and configurations can be used in accordance with the system  1000  without departing from the spirit or scope of the present application. For instance, in various examples, a die cutter includes a lower die plate that is polygonal. Thus, in various examples, the lower die plate may include an edge that is discontinuous. That is, in some examples, the lower die plate may include a plurality of discrete edges. In some examples, the discrete edges define a perimeter of the lower die plate. 
     Additionally, as mentioned above, the lower die plate has a top  2206  and a bottom  2208 . In various examples, the bottom  2208  is situated opposite the top  2206 . In various examples, the lower die plate  2200  includes one or more die cutter apertures  2204 . In some examples, the one or more die cutter apertures  2204  are formed as apertures in the lower die plate  2200 . That is, in some examples, the die cutter apertures  2204  extend from the top  2206  to the bottom  2208  of the lower die plate  2200 . It will be appreciated that while the die cutter apertures  2204  are illustrated as being cylindrical, the die cutter apertures may be of any shape and size. 
     In various examples, one or more of the upper and lower die plates  2100  and  2200  includes one or more locating elements and/or one or more receiving features configured to accommodate or receive the one or more locating elements. It will be appreciated that such locating elements and receiving features operate to maintain an alignment of the die cutter apertures  2104  and  2204  of the top and bottom die plates  2100  and  2200 , respectively. As discussed in greater detail below, such locating elements and receiving features operate to constrain the relative movement between the upper and lower die plates  2100  and  2200  during operation. 
     In various examples, the system  1000  includes a base  1100 , a riser  1200 , one or more stop bars, such as first and second stop bars  1300  and  1400 , and one or more stop bar rails, such as the first and second stop bar rails  1500   a  and  1500   b.  In some examples, the first and second stop bars  1300  and  1400 , and the first and second stop bar rails  1500   a  and  1500   b  operate to position and secure the die cutter  2000  to the base  1100  and/or riser  1200 . In some examples, the system  1000  further includes a wedge clamp  1600  that operates as a one of a primary and secondary clamping mechanism for securing or otherwise immobilizing a portion of the die cutter  2000 , as discussed in greater detail below. 
     In various examples, the system  1000  additionally or alternatively includes a separation assembly that facilitates separation of the upper and lower die plates  2100  and  2200  of the die cutter  2000 . For example, as shown in  FIG. 1 , the system  1000  includes a separation assembly  1700 . As discussed in greater detail below, the separation assembly  1700  facilitates a quick and repeatable separation of the upper and lower die plates  2100  and  2200 . In some examples, such a separation of the upper and lower die plates  2100  and  2200  enables an operator to advance or otherwise rearrange a stock material that is placed between the upper and lower die plates  2100  and  2200  between cutting, stamping, or pressing operations such that an uncut portion of the stock material may be positioned properly for another stamping to be cut, stamped, or pressed therefrom. 
     Turning now to  FIGS. 2 and 3 , an exemplary separation assembly  1700  is shown in combination with the upper and lower die plates  2100  and  2200  of die cutter  2000 .  FIG. 3  is an exploded view of the exemplary separation assembly  1700  shown in combination with the upper and lower die plates  2100  and  2200 .  FIG. 4  is a cross-section view of the exemplary separation assembly  1700  shown in combination with the upper and lower die plates  2100  and  2200 . In various examples, the separation assembly  1700  includes an axial member  1702 , a biasing member  1704 , and a retention member  1706 . In some examples, the separation assembly  1700  further includes one or more elements for fixedly coupling the axial member  1702  to one of the upper and lower die plates  2100  and  2200 . Thus, while the separation assembly  1700  illustrated in the associated figures includes a plurality of fastening members  1708  and  1710  for use in securing the axial member  1702  to one of the upper and lower die plates  2100  and  2200 , the separation assembly  1700  is not so limited. In some examples, the fastening member  1710  is a lock nut. Indeed, it will be appreciated that a variety of other means can be implemented to secure the axial member  1702  to one of the upper and lower die plates  2100  and  2200 . Nonlimiting examples include welding, threading, pinning, and pressing. 
     In various examples, the axial member  1702  is an elongate structure. The axial member  1702  may be cylindrical in some examples, and non-cylindrical in others. For example, the axial member  1702  may alternatively be polygonal. In some examples, the axial member  1702  is secured to one of the upper and lower die plates  2100  and  2200  and operates to cause separation of the upper and lower die plates  2100  and  2200 . For instance, in various examples, the separation assembly  1700  is configured to receive an input and cause separation of the upper and lower die plates  2100  and  2200  in response to the input. In some examples, the axial member  1702  operates to cause the upper die plate  2100  to separate or otherwise translate away from the lower die plate  2200 . In other examples, the axial member  1702  operates to cause the lower die plate  2200  to separate or otherwise translate away from the upper die plate  2100 . In other examples, the axial member  1702  operates to cause the upper and lower die plates  2100  and  2200  to separate or otherwise translate away from one another. 
     In various examples, as mentioned above, the axial member  1702  is coupled or, alternatively, coupleable (e.g., removably coupled) to one of the upper and lower die plates  2100  and  2200 . Generally, when coupled to the upper die plate  2100 , the axial member  1702  is constrained against movement (e.g., rotationally or translationally) relative to the upper die plate  2100 , yet remains free to move (e.g., rotationally or translationally) relative to the lower die plate  2200 . Likewise, when coupled to the lower die plate  2200 , the axial member  1702  is constrained against movement (e.g., rotationally or translationally) relative to the lower die plate  2200 , yet remains free to move (e.g., rotationally or translationally) relative to the upper die plate  2100 . 
     Those of skill in the art should appreciate that the axial member  1702  is coupleable to one of the upper and lower die plates  2100  and  2200  in a variety of different manners. For instance, in some examples, the axial member  1702  is threaded into one of the upper and lower die plates  2100  and  2200 . In some examples, the axial member  1702  is welded to one of the upper and lower die plates  2100  and  2200 . In some examples, the axial member is pressed into an aperture of (and thus frictionally retained by) one of the upper and lower die plates  2100  and  2200 . In some examples, alternative to or in addition to such a mechanical coupling, one or more fasteners may be utilized to couple the axil member to one of the upper and lower die plates  2100  and  2200 . For example, as shown in  FIGS. 2 and 3 , the separation assembly includes a fastening member  1708  and a lock nut  1710 . In some example, the fastening member  1708  is a cap nut. In various example, the fastening member  1708  and lock nut  1710  are positioned within a central bore of the upper die plate  2100  and provide an anchoring mechanism for coupling the axial member  1702  to the upper die plate  2100 . In this illustrated example, the axial member  1702  is a threaded rod and the fastening member  1708  and lock nut  1710  assembly has a central threaded bore into which the axial member  1702  can be threaded. Those of skill in the art should appreciate that one or more of the fastening member  1708 , the lock nut  1710 , and the axial member  1702  may be integral with one another. That is, in some examples, one or more of the fastening member  1708 , the lock nut  1710 , and the axial member  1702  may form a single monolithic or inseparable component. 
     As mentioned above, in various examples, the separation assembly includes a biasing member  1704  and a retention member  1706 . The biasing member  1704  and the retention member  1706  help facilitate the quick and repeatable separation of the upper and lower die plates  2100  and  2200  during the cutting, stamping, or pressing operation. The biasing member  1704  is generally a resilient member (e.g., a spring or other component) that is deformable (e.g., compressible and/or extendable) and capable of exerting a force that influences one or more of the upper and lower die plates  2100  and  2200  to immobilize or release material being punched (e.g., see  FIG. 4  where the upper and lower die plates  2100  and  2200  are separated from one another to the extent that a metal stock from which stamping are being formed can be rearranged), or a closed or collapsed configuration (e.g., see  FIG. 5  where the upper and lower die plates  2100  and  2200  sandwich and effectively immobilize the metal stock situated therebetween). 
     In various examples, the biasing member  1704  is situated adjacent to and exerts a force on at least one of the upper and lower die plates  2100  and  2200 . In some examples, the biasing member  1704  is disposed about the axial member  1702 . For example, as shown in  FIGS. 3 to 5 , the biasing member  1704  is disposed about the axial member  1702  and is situated therealong such that the axial member  1702  extends through an interior of the biasing member  1704 , and such that the biasing member  1704  is positioned adjacent the lower die plate  2200 . 
     In the illustrated examples of  FIGS. 3 to 5 , the biasing member  1704  is positioned between the retention member  1706  and the lower die plate  2200 . In various examples, the retention member  1706  interfaces with the axial member  1702  to retain the biasing member  1704  along the axial member  1702  and provide tension adjustment. In some examples, the retention member  1706  includes a threaded bore and is threaded onto the axial member  1702 . In some examples, the retention member  1706  is pressed, welded, or otherwise frictionally retained by the axial member  1702 . In some examples, the axial member  1702  and the retention member  1706  are one-and-the same. That is, in some examples, the axial member  1702  and the retention member  1706  form a single monolithic unit or component. In some such examples, the axial member  1702  and the retention member  1706  may be machined, welded, joined, or otherwise formed via any suitable process or procedure as those of skill should appreciate. It should also be appreciated that where the axial member  1702  and the retention member  1706  form an inseparable unit, the axial member  1702  is generally separable or removably coupleable to one or more of the fastening members  1708  and  1710  such that the separation assembly  1700  can be deconstructed from the die cutter  2000  and replaced, repaired, cleaned. In various examples, such a construction also facilitates additionally or alternatively reassembling the separation assembly in conjunction with a different die cutter (e.g., made by any manufacturer). Thus, those of skill in the art should appreciate that the separation assembly is universal in nature and can be adapted to interface with virtually any die cutter. Alternatively, the separation assembly may be configured for use with only a single make/model of die cutter or a limited number of die cutters (e.g., of a particular brand or of a particular size and/or shape). 
     In some examples, the retention member  1706  operates as a reaction mechanism against which the biasing member  1704  can exert force. Specifically, as one or more of the upper and lower die plates  2100  and  2200  are actuated (e.g., translated along the axial member) relative to the other of the upper and lower die plates  2100  and  2200 , the biasing member  1704  is compressed. In some such examples, biasing member  1704  is compressed between one of the upper and lower die plates  2100  and  2200  and the retention member  1706 . Providing such a mechanism provides that the biasing member  1704  can exert a force the upper or lower die plate  2100  and  2200  in a manner that influence the upper or lower die plate  2100  or  2200  to translate away from the biasing member  1704 . In various examples, such a configuration operates to facilitate repetitious and efficient opening and closing of the die cutter  2000 . It will be appreciated that while the illustrated examples include a single biasing member situated between the retention member  1706  and the lower die plate  2200 , some other examples include a biasing member situated between the upper die plate  2100  and an end of the axial member  1702  adjacent the upper die plate  2100 , and/or a biasing member situated between the upper and lower die plates  2100  and  2200 . Additionally or alternatively, as discussed further below, the separation assembly  1700  may include a plurality of biasing members situated between a plurality of the components of the separation assembly  1700 . Thus, it will be appreciated that the inventive scope of the present application is not limited to a single biasing member situated between the retention member  1706  and the lower die plate  2200 . 
     In various examples, the biasing member  1704  exerts a force on the lower die plate  2200  that influences the lower die plate  2200  toward the upper die plate  2100 . In particular, as shown in  FIG. 3 , the axial member  1702  is secured to the upper die plate  2100  and extends through the lower die plate  2200  such that the axial member is operable to translate relative to the lower die plate  2200 . In some examples, the axial member  1702  extends through a bore in the lower die plate  2200 . Such a configuration provides that the axial member  1702  is constrained against translation relative to the upper die plate  2100  while remaining free to move relative to the lower die plate  2200 . As shown, the retention member  1706  is coupled to the axial member  1702  such that the lower die plate  2200  is positioned between the retention member  1706  and the upper die plate  2100 , and such that the biasing member  1704  is disposed about the axial member  1702  between the retention member  1706  and a bottom  2208  of the lower die plate  2200 . 
       FIG. 4  shows the separation assembly  1700  in conjunction with the upper and lower die plates  2100  and  2200  in a closed or collapsed configuration.  FIG. 5  shows the separation assembly  1700  in conjunction with the upper and lower die plates  2100  and  2200  in a separated or open configuration. As discussed in greater detail below, the system  1000  facilitates a transition of the upper and lower die plates  2100  and  2200  between the open and closed configurations. In various examples, in the open or separated configuration, the upper and lower die plates  2100  and  2200  have been translated away from one another. In various examples, in the open configuration, the biasing member  1704  is compressed between the bottom  2208  of the lower die plate  2200  and the retention member  1706 . This compression causes energy to be stored in the biasing member  1704 , which in turn causes a force to be exerted by the biasing member  1704  on the bottom  2208  of the lower die plate  2200  in a direction away from the retention member  1706 . This compression also causes a force to be exerted by the biasing member  1704  on the retention member  1706  in a direction away from the lower die plate  2200 . The combination of these forces on the lower die plate  2200  and the retention member  1706  influence the lower die plate  2200  and the retention member  1706  away from one another. 
     In various examples, the biasing member  1704  is compressed an amount that corresponds to an amount of separation achieved between the upper and lower die plates  2100  and  2200 . For example, if the upper and lower die plates  2100  and  2200  are separated by one half of an inch (0.5 in), then the biasing member  1704  is compressed such that its axial length is reduced by one half of an inch (0.5 in). Likewise, if the upper and lower die plates  2100  and  2200  are separated by one inch (1.0 in), then the biasing member  1704  is compressed such that its axial length is reduced by one inch (1.0 in). In various examples, the amount by which the upper and lower die plates  2100  and  2200  are separated depends on a number of factors and can be modified as desired to virtually any amount as those of skill will appreciate. 
     Additionally, in various examples, as discussed in greater detail below, when the force exerted on the separation assembly  1700  that causes the displacement of the upper and lower die plates  2100  and  2200  relative to one another is removed, the energy stored in the compressed biasing member  1704  causes the upper and lower die plates  2100  and  2200  to translate toward one another. In some examples, the upper and lower die plates  2100  and  2200  translate toward one another until they come into contact with each other or until they contact an element (e.g., stock material) situated therebetween. 
     As mentioned above, when positioned in the closed or collapsed stated, the stock material situated between the upper and lower die plates  2100  and  2200  is immobilized. In various examples, this immobilization is facilitated by the upper and lower die plates  2100  and  2200  being forced toward one another in the closed configuration and the stock material being frictionally retained therebetween. Thus, it will be appreciated that in some examples, while the biasing member  1704  exerts a force on one of the upper and lower die plates  2100  and  2200  in the open configuration (e.g.,  FIG. 4 ), the biasing member  1704  likewise exerts a force on one of the upper and lower die plates  2100  and  2200  in the closed configuration (e.g.,  FIG. 5 ) that influences the upper and lower die plates  2100  and  2200  toward one another. In some examples, a same or similar force is exerted on by the biasing member  1704  in both the open and closed configurations. In some other examples, a greater force (or alternatively, a smaller force) is exerted by the biasing member  1704  in the open configuration than in the closed configuration. 
     In various other examples, the stock material may be additionally or alternatively immobilized via the utilization of one or more additional mechanisms that press or squeeze the upper and lower die plates  2100  and  2200  together during the cutting, stamping, or pressing operation. For example, one or more clamps or other mechanical mechanisms may be utilized to squeeze the upper and lower die plates  2100  and  2200  together. In some examples, the clamps are configured to decouple or otherwise cease their application of force to the upper and lower die plates  2100  and  2200  upon actuation of the separation assembly 
     As mentioned above, in various examples, one or more biasing members may additionally or alternatively be positioned between the upper die plate  2100  and an end of the axial member situated adjacent the upper die plate  2100 . For instance, in some examples, a portion or an end of the axial member  1702  may extend above the top  2106  of the upper die plate  2100  and a biasing member may be positioned between the end of the axial member and the top  2106  of the upper die plate  2100 . In some such examples, in a manner similar to that discussed above with respect to a biasing member  1704  being positioned between the retention member  1706  and the lower die plate  2200 , a biasing member may be positioned between the top  2106  of the upper die plate  2100  and one or more elements coupled to the end of the axial member  1702  extending above the top  2106  of the upper die plate  2100 . Thus, in a manner similar to that discussed above with respect to the biasing member  1704  influencing the lower die plate  2200  toward the upper die plate  2100 , a biasing member situated between the top  2106  of the upper die plate  2100  and one or more elements coupled to the end of the axial member  1702  extending above the top  2106  of the upper die plate  2100  may operate to influence the upper die plate  2100  toward the lower die plate  2200  and away from and end of the axial member  1702  extending above the top  2106  of the upper die plate  2100 . 
     Moreover, while the above-discussed examples include a biasing member that is configured to influence the upper and lower die plates  2100  and  2200  toward one another, in various alternative embodiments, a separation assembly is configured such that the biasing member  1704  influences the upper and lower die plates  2100  and  2200  away from one another. Such a separation assembly is generally similar to the separation assembly  1700  discussed above, with an exception being that the biasing member  1704  is positioned between the upper and lower die plates  2100  and  2200 . Such a configuration provides that the biasing member  1704  exerts a force on the upper and lower die plates  2100  and  2200  that influences the upper and lower die plates  2100  and  2200  away from one another. In some such examples, the biasing member  1704  is situated between the top  2206  of the lower die plate  2200  and the bottom  2108  of the upper die plate  2100 . It will be appreciated that tendency of the separation assembly  1700  to influence the upper and lower die plates  2100  and  2200  away from one another requires that during cutting, punching, and/or pressing operations, the bias of the separation assembly  1700  is mechanically overcome by drawing the upper and lower die plates  2100  and  2200  toward one another in a manner that operates to sandwich and frictionally retain the stock material between the upper and lower die plates  2100  and  2200 . It will also be appreciated that such a configuration provides for the ability to vary the clamping force, and thus the degree of frictional retention of the stock material situated between the upper and lower die plates  2100  and  2200 . 
     In various examples, the ability to cause a separation and/or drawing together of the upper and lower die plates  2100  and  2200  is facilitated by both the separation assembly  1700  the various other components of the system  1000 . For example, referring back now to the nonlimiting example of  FIG. 1 , the system  1000  includes an apparatus for holding and supporting the die cutter  2000  while the upper and lower die plates  2100  and  2200  are transitioned between the open and closed configurations. In various examples, the system  1000  includes one or more subassemblies that operate to fix one or more of the upper and lower die plates  2100  and  2200  relative to a base  1100 . The base  1100  is generally a structural component to which a riser  1200  is mounted or otherwise coupled. In some examples, the base  1100  includes a protective or compliant pad on an upper surface thereof. In various examples, this protective pad protects against dulling the die cutting members as they are forced through the die cutter  2000  during the cutting, pressing, or stamping procedure. 
     The riser  1200  may be coupled to the base  1100  at any suitable position and via any suitable means including but not limited to welding, clamping, and/or securing via one or more fasteners or other mechanical means. As shown in  FIG. 1 , first and second stop bars  1300  and  1400 , and the first and second stop bar rails  1500   a  and  1500   b  secure the die cutter  2000  to the base  1100  and/or riser  1200 . Specifically, as shown, the lower die plate  2200  is secured between the first and second stop bars  1300  and  1400 , which are coupled to the riser  1200  via the first and second stop bar rails  1500   a  and  1500   b.  As discussed further below, in various examples, the positions of the first and second stop bars  1300  and  1400  are independently adjustable along the first and second stop bar rails  1500   a  and  1500   b.  Likewise, the positions of the first and second stop bar rails  1500   a  and  1500   b  are independently adjustable relative to the riser  1200 . It will be appreciated that such adjustability provides to a universal system  1000  that can accommodate a die cutter of virtually any shape or size (e.g., any available make or model). In other words, the system  1000  is not specific to a die cutter of a particular brand or model. 
     Turning now to  FIGS. 6A-6C , an exemplary riser  1200  is shown.  FIG. 6A  is a top view of the riser  1200 .  FIG. 6B  is a front view of the riser  1200 .  FIG. 6C  is a bottom view of the riser  1200 .  FIG. 6D  is a side view of the riser  1200 . In various examples, the riser  1200  includes a body  1202 , a top  1204 , a bottom  1206 , a first side  1208 , a second side  1210 , a first face  1212 , and a second face  1214 . In some examples, the riser  1200  further includes one or more features configured to accommodate and retain the stop bar rails. In various examples, such features include one or more apertures or bores sized to accommodate the stop bar rails. For example, as shown in  FIG. 6B , the riser  1200  includes a first stop bar rail accommodation feature  1216  and a second stop bar rail accommodation feature  1218 . In various examples, the stop bar rail accommodation features include apertures that extend through the riser  1200  from the first face  1212  to the second face  1214 . That is, in various examples, the features of the riser  1200  configured to accommodate the stop bar rails are configured such that the stop bar rails can extend partially and/or entirely through the riser  1200 . 
     In some examples, the stop bar rail accommodation features provide that a position of the stop bar rails can be adjusted relative to the riser  1200 . That is, in various examples, a stop bar rail can be received within one of the stop bar rail accommodation features such that the stop bar rail is positioned in a first position relative to the riser  1200  (e.g., a first end of the stop bar rail is first distance from the first face of the riser  1200 ). In these examples, the stop bar rail can be adjusted or moved relative to the riser such that the stop bar rail is positioned in a second, different position relative to the riser  1200  (e.g., the first end of the stop bar rail is a second distance from the first face of the riser  1200 ). As discussed in greater detail below, such adjustability provides for a versatile system  1000  that can accommodate, retain, and actuate virtually any off-the-shelf or custom die cutter. 
     In various examples, the riser  1200  includes one or more features that operate to secure the stop bar rail within the stop bar rail accommodation feature. In some examples, one or more set screws may be threaded into an through a portion of the riser  1200  until they come into contact with the stop bar rail as will be appreciated by those of skill in the art. For example, as shown in  FIG. 6D , the riser  1200  includes an aperture  1219  that extends transverse to a longitudinal axis of the stop bar rail accommodation feature. In some examples, the aperture  1219  extends from the second side  1210  through the riser  1200  to the stop bar rail accommodation feature to form a bore that is operable to receive set screw. In various examples, the bore is threaded such that the set screw can be received therein and extended therethrough to engage a stop bar rail received within the stop bar rail accommodation feature, as those of skill will appreciate. Additionally or alternatively, in some examples, a relief is made in a portion of the riser  1200  that provides for the ability to collapse or partially collapse, together or separately, the stop bar rail accommodation features. For example, as shown in  FIGS. 6A and 6B  reliefs  1220  and  1222  are formed in the riser  1200  and extend from the top  1204  of the riser  1200  to the stop bar rail accommodation features  1216  and  1218 . That is, as shown in  FIGS. 6A and 6B , the reliefs formed in the riser  1200  expose the apertures of the stop bar rail accommodation features to the top  1204  of the riser. It will be appreciated that the reliefs may alternatively be formed in the riser such that the apertures of the stop bar rail accommodation features are exposed to a side of the riser  1200 . In various examples, the incorporation of reliefs  1220  and  1222  into the riser  1200  create opposing surfaces of the riser  1200  that can be drawn together in operation. Specifically, the incorporation of relief  1220  into the riser  1200  creates opposing surfaces  1224  and  1226 . 
     Similarly, the incorporation of relief  1222  into the riser  1200  creates opposing surfaces  1228  and  1230 . 
     As those of skill in the art will appreciate, in operation, surfaces  1224  and  1226  can be drawn together to collapse or partially collapse stop bar rail accommodation feature  1216 . Likewise, in operation, surfaces  1228  and  1230  can be drawn together to collapse or partially collapse stop bar rail accommodation feature  1218 . The collapse or partial collapse of the stop bar rail accommodation features generally includes a reduction in cross section of the stop bar rail accommodation features. For example, as the opposing surfaces  1224  and  1226  are drawn together, a cross section of the aperture of stop bar rail accommodation feature  1216  is reduced such that the diameter of the aperture is reduced. In various examples, the opposing surfaces are drawn together via a fastener, such as a screw. In some examples, the aperture  1219 , referred to above, extends between the second side  1210  and opposing surface  1230 , and further extends into opposing surface  1228  to form a bore. In these examples, the bore is threaded such that a screw extending from the second side  1210  can be threaded into the bore. In some examples, the portion of the aperture or bore extending from the second side  1210  to the opposing surface  1230  is generally oversized relative to the screw (and otherwise not threaded), as those of skill in the art will appreciate. 
     In some examples, when a stop bar rail is received within the stop bar rail accommodation feature, a reduction in cross section of the stop bar rail accommodation feature generally results in a frictional interference between the walls of the stop bar rail accommodation feature and the portion of the exterior surface of the stop bar rail received within the stop bar rail accommodation feature. This interference operates to frictionally retain the stop bar rail within the stop bar rail accommodation feature. In some examples, this interference operates to constrain the stop bar rail against movement relative to the riser  1200 . Those of skill will appreciate that the drawing together of opposing surfaces  1228  and  1230  operates to reduce the cross section of stop bar rail accommodation feature  1218  in a similar manner. 
     Turning now to  FIGS. 7A and 7B , an exemplary first stop bar  1300  is shown.  FIG. 7A  is a side view of the first stop bar  1300 .  FIG. 7B  is a front view of the first stop bar  1300 . In various examples, the first stop bar  1300  includes a body  1302 , a top  1304 , a first side  1306 , a second side  1308 , a front  1310 , and a back  1312 . In various examples, the first stop bar  1300  includes one or more features configured to facilitate a coupling between the first stop bar  1300  and one or more of the stop bar rails, such as stop bar rails  1500   a  and  1500   b.  For example, as shown in  FIG. 7B , the first stop bar  1300  includes a first stop bar rail interface feature  1314 . In some examples, the first stop bar rail interface feature  1314  is a projection that includes features similar to those discussed above in relation to the riser  1200  that facilitate a coupling between the riser  1200  and the stop bar rails. For example, the stop bar rail interface feature  1314  includes an aperture or bore  1316  similar to the first and second stop bar rail accommodation features  1216  and  1218  that is configured to accommodate a stop bar rail therethrough. In various examples, the aperture or bore  1316  extends from the front  1310  to the back  1312  of the first stop bar  1300 . 
     In some examples, similar to the reliefs  1220  and  1222 , a relief  1318  is formed in a bottom surface  1320  of the stop bar rail interface feature  1314  that extends from the bottom surface  1320  to the aperture  1316 . Likewise, similar to the reliefs  1220  and  1222 , the relief  1318  creates two opposing surfaces  1322  and  1324  that can be drawn together to frictionally retain a stop bar rail within the aperture  1316  and thereby constrain the first stop bar  1300  against movement relative to the stop bar rail. In various examples, as similarly discussed above with respect to the aperture  1219  of the riser  1200 , the stop bar rail interface feature  1314  includes one or more features that operate in combination with one or more set screws to secure the stop bar rail within the stop bar accommodation feature. Specifically, in some examples, the stop bar rail interface feature  1314  includes an aperture or bore  1326  that extends from the first side  1306  to either of the interior surface of the aperture  1316  or the opposing surface  1324 . That is, the aperture or bore  1326  extends transverse to a longitudinal axis of the aperture  1316 . As similarly discussed above with respect to the aperture  1219  of the riser  1200 , a set screw may be threaded into or through the bore to either engage a stop bar rail received within the aperture  1316  or to engage a threaded portion of the bore extending into opposing surface  1322  to facilitate the drawing together of surfaces  1322  and  1324 , as those of skill will appreciate. 
     The first stop bar  1300  is shown in  FIG. 7B  as including a plurality of stop bar rail interface features. For example, in addition to the stop bar rail interface feature  1314 , the first stop bar  1300  includes a second stop bar rail interface feature  1328 . Those of skill should appreciate that the second stop bar rail interface feature  1328  is similar to the first stop bar rail interface feature  1314 , and includes at least an aperture  1330 , a bottom surface  1334 , and one or more features, such as one or more apertures or bores (not illustrated), extending from the second side surface  1308  into the stop bar rail interface feature  1328  that operate in combination with one or more set screws to secure the stop bar rail within the stop bar accommodation feature  1328 . In some examples, the stop bar rail interface feature  1328  further includes a relief  1332  (similar to relief  1318 ) that creates opposing side surfaces  1336  and  1338  (similar to opposing side surfaces  1322  and  1324 ), that can be drawn together to secure a stop bar rail within the aperture  1330 . 
     As mentioned above and as discussed in greater detail below the system  1000  is configured to interface with the die cutter  2000 . In various examples, the system  1000  includes one or more features that interface with the die cutter  2000  and retain the die cutter  2000  such that one or more cutting, stamping, or pressing operations can be carried out. In some examples, the die cutter  2000  is retained by the first stop bar  1300 . That is, in various examples, the first stop bar  1300  includes one or more features that are configured to interface with the die cutter  2000 . For example, as shown in  FIGS. 7A and 7B , the first stop bar  1300  includes a flange  1340 . In various examples, the flange  1340  is configured to support and secure the die cutter  2000 . In other words, in various examples, the flange  1340  is configured to support a top or bottom of one of the upper or lower die plates  2100  and  2200  of the die cutter  2000 . In various examples, the flange  1340  is situated between the top  1304  and the bottom surfaces  1320  and  1334  of the stop bar rail interface features  1314  and  1328 , respectively. That is, in some examples, the flange is situated below the top  1304  and above the bottom of the first stop bar  1300 . In some examples, the flange is formed by a portion of the front  1310  being recessed. In some examples, a surface or face extending between the flange  1340  and the top  1304  is angled relative to one or more of the flange  1340  and the top  1304 , and is recessed or otherwise offset relative to the front  1310 . In various examples, such an angled surface provides for controlled engagement with an exterior edge of one of the upper and lower die plates  2100  and  2200  of the die cutter  2000 . For instance, in some examples, such an angled surface provides that an edge  1342  formed between the top  1304  and the surface extending between the top  1304  and the flange  1340  engages one of the upper and lower die plates  2100  and  2200 . As discussed in greater detail below, in some examples, such a configuration also provides that the first stop bar  1300  applies a force on one of the upper and lower die plates  2100  and  2200  in a direction toward the flange  1340 , which helps maintain a position and angle of the die cutter relative to certain of the components of the system  1000  during the cutting, punching, and/or pressing operations. 
     As mentioned above, in addition to the first stop bar, in various examples, the system  1000  includes a second stop bar  1400 . In some examples, the first and second stop bars  1300  and  1400  operate to maintain a position of the die cutter  2000  relative to certain of the components of the system  1000 . Turning now to  FIGS. 8A and 8C , an exemplary second stop bar  1400  is shown.  FIG. 8A  is a side view of the second stop bar  1400 .  FIG. 8B  is a front view of the second stop bar  1400 .  FIG. 8C  is a top view of the second stop bar  1400 . In various examples, the second stop bar  1400  includes a body  1402 , a top  1404 , a bottom  1406 , a first side  1408 , a second side  1410 , a front  1412 , and a back  1414 . Like the first stop bar  1300 , in various examples, the second stop bar  1400  includes one or more features configured to facilitate a coupling between the second stop bar  1400  and one or more of the stop bar rails, such as stop bar rails  1500   a  and  1500   b.  For example, as shown in  FIG. 8B , the second stop bar  1400  includes an aperture or bore  1416  similar to aperture  1316  that is configured to accommodate a stop bar rail therethrough or otherwise receive a stop bar rail therein. In various examples, the aperture or bore  1416  extends from the front  1412  to the back  1414  of the second stop bar  1400 . 
     In some examples, similar to the relief  1318 , a relief  1418  is formed in the bottom  1406  of the second stop bar  1400 . In various examples, the relief  1418  extends from the bottom  1406  to at least the aperture  1416 . Likewise, similar to the relief  1318 , the relief  1418  creates two opposing surfaces  1420  and  1422  that can be drawn together to frictionally retain a stop bar rail within the aperture  1416  and thereby constrain the second stop bar  1400  against movement relative to the stop bar rail (and vice versa). In various examples, as similarly discussed above with respect to the aperture  1316 , the second stop bar  1400  includes one or more features that operate in combination with one or more set screws to secure a stop bar rail within the aperture  1416 . Specifically, in some examples, the second stop bar  1400  includes an aperture or bore  1424  that extends from the first side  1408  to either of the interior surface of the aperture  1416  or the opposing surface  1422 . That is, the aperture or bore  1424  extends transverse to a longitudinal axis of the aperture  1416 . As similarly discussed above with respect to the relief  1318 , a set screw may be threaded into or through the bore to either engage a stop bar rail received within the aperture  1416  or to engage a threaded portion of the bore extending into opposing surface  1420  to facilitate the drawing together of surfaces  1420  and  1422 , as those of skill will appreciate. 
     The second stop bar  1400  is shown in  FIG. 8B  as including a plurality of apertures configured to accommodate a stop bar rail. For example, in addition to aperture  1416 , the second stop bar  1400  includes a second aperture  1426 . In various examples, the second aperture  1426  is closer in proximity to the second side  1410  than is the first aperture  1416 . Those of skill should appreciate that the second aperture  1426  is similar to the first aperture  1416  in both configuration and function. Thus, as those of skill will appreciate, the second aperture operates to interface with a second stop bar rail. In some examples, one or more set screws may be utilized to secure the stop bar rail within the second aperture  1426  in a manner similar to that discussed above. For instance, in addition or alternative to a bore extending into the aperture  1426 , the second stop bar  1400  further includes a relief  1428  (similar to relief  1418 ) that creates opposing side surfaces  1430  and  1432  (similar to opposing side surfaces  1420  and  1422 ), that can be drawn together to secure a stop bar rail within the aperture  1426 . 
     In some examples, like the first stop bar  1300  mentioned above, the die cutter  2000  is additionally or alternatively retained by the second stop bar  1400 . That is, in various examples, the second stop bar  1400  includes one or more features that are configured to interface with the die cutter  2000 . For example, as shown in  FIGS. 8A-8C , the second stop bar  1400  includes a flange  1432 . In various examples, the flange  1432  is configured to support the die cutter  2000 . In other words, in various examples, the flange  1440  is configured to support a top or bottom of one or the upper and lower die plates  2100  and  2200  of the die cutter  2000 . In various examples, the flange  1432  is situated between the top  1404  and the bottom  1406  of the second stop bar  1400 . That is, in some examples, the flange  1432  is situated below the top  1404  and above the bottom  1406  of the second stop bar  1400 . In some examples, the flange is formed by a portion of the front  1412  being recessed such that a surface or face extending between the flange  1432  and the top  1404  is recessed or otherwise offset relative to the front  1412 . This recess allows for the die cutter  2000  to be supported by the flange  1432  of the second stop bar  1400 . 
     Turning now to  FIGS. 9 and 10 , an assembly of the system  1000  with the die cutter  2000  is shown.  FIG. 9  is a side view of the system  1000  in conjunction with the die cutter  2000 .  FIG. 10  is a top view of the system  1000  in conjunction with the die cutter  2000 . As shown, the die cutter  2000  is received by the system  1000  or otherwise positioned thereon such that the die cutter  2000  is supported by one or more of the riser  1200 , the first stop bar  1300  and the second stop bar  1400 . In various examples, the lower die plate  2200  of die cutter  2000  is supported by flanges  1340  and  1432  of the first stop bar  1300  and the second stop bar  1400 , respectively. The first and second stop bar rails  1500   a  and  1500   b  extend through the riser  1200 , and the first and second stop bars  1300  and  1400  are coupled thereto. 
     In some examples, the first and second stop bars  1300  and  1400  are secured to the first and second stop bar rails  1500   a  and  1500   b  by way of one or more fasteners, such as one or more set screws, as discussed above. In some examples, one or more of the first and second stop bars  1300  and  1400  may be press fit onto one or more of the first and second stop bar rails  1500   a  and  1500   b.    
     In various examples, the first and second stop bars  1300  and  1400  are supported by the first and second stop bar rails  1500   a  and  1500   b  such that, when supporting the die cutter  2000 , the die cutter  2000  is offset from the base  1100  a distance sufficient to allow a cutting member (not shown) that is used in combination with the die cutter  2000  to be retrieved without having to remove the die cutter  2000  from the system  1000 . That is, after the cutting member is forced through one of the die cutter guides (such as die cutter guide  2104 ), the cutting member can be retrieved without removing the die cutter  2000  from the system  1000 . In some examples, one or more of the first and second stop bars  1300  and  1400  include a relief that is configured to accommodate removal or retrieval of the cutting member after is has been forced through the die cutter  2000 . For example as shown in  FIG. 11 , the first stop bar  1300  includes a relief  1344  having a recessed surface  1346 . When positioned on the first and second stop bar rails  1500   a  and  1500   b  the recessed surface  1346  is offset from the base  1100  by an amount sufficient to accommodate retrieval of a cutting member. In some examples, a distance between the base  1100  and the recessed surface  1346  is greater than a distance between the base  1100  and the bottom surfaces  1320  and  1334  of the first and second stop bar rail interface features  1314  and  1328 . Put differently, in various examples, the first stop bar  1300  is configured such that a distance between the top  1304  and the recessed surface  1346  is less than a distance between the top  1304  and the bottom surfaces  1320  and  1334  of the first and second stop bar rail interface features  1314  and  1328 . 
     As shown in  FIG. 9 , a wedge clamp  1600  is coupled to the second stop bar  1400 . In various examples, the wedge clamp  1600  operates as a secondary clamping mechanism for securing the die cutter  2000  between the first and second stop bars  1300  and  1400 . An exemplary wedge clamp  1600  is also shown in  FIGS. 8A-8C . In various examples, the wedge clamp generally includes a block component  1602  and a camming component  1604 . The camming component  1604  is situated within a recess of the block component  1602  and is rotatable relative thereto. In various examples, the camming component  1604  includes an eccentricity or a lobe  1606 . As the camming component  1604  is rotated relative to the block component  1602 , the lobe  1606  reacts against the recess of the block component  1602  (e.g., against a surface of the recess), causing the block component  1602  to move. Those of skill in the art will appreciate that as the camming component  1604  is revolved, the block component will translate forward and backward relative to the second stop bar  1400 . Specifically, with regard to the configuration illustrated in  FIGS. 8A-8C , the block component  1602  is configured to translate forward and backward relative to the front  1412  and the back  1414  of the second stop bar  1400  depending on an angular position of the lobe  1606  and a direction of rotation of the camming component  1604 . 
     Turning back now to  FIGS. 9 and 10 , those of skill in the art will appreciate that translating the block component  1602  forward relative to the front  1412  (or otherwise away from the back  1414 ) of the second stop bar  1400  operates to apply force to the die cutter  2000  that influences the die cutter  2000  toward the first stop bar  1300 . It will be appreciated that this advancement of the block component  1602  operates to clamp or wedge the die cutter  2000  between the block component  1602  and first stop bar  1300 . In some examples, the die cutter  2000  is clamped between the edge  1342  of the first stop bar  1300  and the block component  1602 . Similarly, translating the block component  1602  backward relative to the front  1412  (or otherwise toward the back  1414 ) of the second stop bar  1400  operates to remove any clamping force exerted on the die cutter  2000 , thereby allowing for the die cutter  2000  to be subsequently removed from the system  1000 . Thus, in various examples, the system  1000  includes one or more features that provide for selectively coupling the die cutter  2000  to the system  1000 . 
     While the wedge clamp  1600  is illustrated as being coupled to the top  1404  of the second stop bar  1400 , it should be appreciated that a wedge clamp  1600  may alternatively or alternatively be coupled to the second stop bar  1400  at a position between the top  1404  and the flange  1432 . In various examples, the wedge clamp  1600  may be situated in a recess positioned between the top  1404  and the flange  1432  of the second stop bar  1400  (and/or between the top  1304  and the flange  1340  of the first stop bar). That is, in some examples (not shown) a recess is formed in the second stop bar  1400  between the top  1404  and the flange  1432  and is configured to house the wedge clamp  1600  (though the size and shape of the wedge clamp will differ from that illustrated in  FIGS. 10 and 11 ). In some examples, the recess is formed in the surface that extends between the top  1404  and the flange  1432 . In some such examples, the camming component  1604  is accessible from the top  1404  (or the bottom  1406 ) of the second stop bar  1400  (or from the top  1304  or bottom of the first stop bar  1300 ) as those of skill will appreciate. 
     Additionally, while the above-discussed examples include a wedge clamp  1600  that is coupled to the second stop bar, one or more wedge clamps may additionally or alternatively be coupled to the first stop bar in a manner similar to the manner in which the wedge clamp  1600  is coupled to the second stop bar. Thus, in various examples, the system  1000  may include a plurality of wedge clamps  1600 . 
     As mentioned above, in various examples, the system  1000  includes a separation assembly that operates to cause a separation between the upper and lower die plates  2100  and  2200 . In various examples, the system  1000  further includes one or more components that operate to cause activation of the separation assembly  1700  and thus actuation of the die cutter  2000 . In particular, in various examples, the system  1000  includes one or more mechanisms that interact with the separation assembly  1700  to cause repetitious separation of the upper and lower die plates  2100  and  2200 . 
     With reference now to  FIG. 11 , actuation assembly  1800  of the system  1000  is shown.  FIG. 11  is a front view of the system  1000 . In various examples, the actuation assembly  1800  includes a shaft  1810 , a cam  1820 , and a lever  1830 . In some examples, the shaft  1810  is an elongate element that extends through a portion of the riser  1200  and is operable to be rotated relative thereto. In some examples, the shaft  1810  is cylindrical. The shaft  1810  generally includes a first end  1812 , a second end  1814 , and an intermediate portion  1816  extending between the first and second ends  1812  and  1814 . Generally, the actuation assembly  1800  operates in accordance with the separation assembly  1700  to cause actuation (separation and/or drawing together) of the upper and lower die plates  2100  and  2200 , as will be discussed further below. In some examples, one or more collars operate to couple the lever  1830  to the shaft  1810  and to maintain a position of the shaft  1810  relative to the riser  1200 . For example, as shown in  FIGS. 9 to 12 , a first collar  1840  couples the lever  1830  to the shaft  1810 . Such a configuration provides that the lever  1830  can be coupled to the shaft on either side of the riser  1200  to accommodate user preference. 
     It will be appreciated that, in various alternative examples, the lever may be welded, press fit, or integral with the shaft  1810 . Additionally, as shown, a second and a third collar  1850  and  1860  couple to shaft  1810  and maintain a position of the shaft  1810  relative to the riser  1200 . It will be appreciated, however, that alternative means may be utilized to maintain a position of the shaft  1810  relative to the riser  1200 . That is, the example configurations of  FIGS. 9 to 12  should not be construed as limiting, and alternative means of coupling the shaft  1810  to the riser  1200  such that the shaft  1810  can rotate relative to the bore  1232  may be utilized without departing from the spirit or scope of the present disclosure. 
     In various examples, the cam  1820  is a projection that extends from a portion of the shaft  1810  and that is configured to make sliding contact with the retention member  1706  of the separation assembly  1700 . This sliding contact is operable to impart reciprocal or variable motion to the retention member  1706  as the shaft  1810  is rotated, which in turn imparts reciprocal or variable motion to one or more of the upper and lower die plates  2100  and  2200 . In various examples, the cam  1820  is configured with the shaft  1810  such that as the shaft  1810  is rotated, the cam  1820  elevates the retention member  1706  relative to the riser  1200 . In some examples, the cam  1820  is a radial projection of a portion of the shaft  1810 . In some examples, the cam  1820  is noncircular and includes an eccentricity or a lobe. In some examples, the cam  1820  is positioned on the shaft  1810  such that a longitudinal axis of the cam  1820  is laterally offset relative to a longitudinal axis of the shaft  1810 . Put differently, in some examples, the cam  1820  and the shaft  1810  are not concentric. 
     As shown in  FIG. 14 , the cam  1820  includes a body  1822  having an exterior periphery  1824  that is curved. In some examples, the exterior periphery  1824  has a uniform curvature (e.g., circular) and includes a longitudinal axis, while the curvature varies in other examples (e.g., eccentricity or oblong). The curvature of the exterior periphery  1824  shown in  FIG. 14  is generally uniform. For example, as show in  FIG. 14 , a longitudinal axis of the shaft  1810  about which the cam  1820  rotates is offset relative to a longitudinal axis of the shaft  1810  (e.g., the shaft  1810  is not concentric with the cam  1820 ). As discussed in greater detail below, a deviation of the orbit of the cam  1820  from circularity operates to impart the reciprocal or variable motion to the retention member  1706  and one or more of the upper and lower die plates  2100  and  2200 . 
     In various examples, the cam  1820  is integral to the shaft  1810 . In some examples, the cam  1820  is removably coupled to the shaft  1810 . In some examples, the cam  1820  is coupled to the shaft  1810  via welding, an interference fit, or any suitable means, as those of skill in the art will appreciate. As shown in  FIG. 11 , the cam  1820  is coupled to the shaft  1810  at a position along the shaft  1810  between a first and a second ends  1812  and  1814  of the shaft  1810 . In various examples, the riser  1200  includes a relief or channel  1234  that is sized and configured to accommodate the cam  1820  of the actuation assembly  1800 . Turning back now to  FIGS. 6A-6C , in some examples, the relief or channel  1234  is formed in the bottom  1206  of the riser  1200  at a position between the first and second sides  1208  and  1210 . In some examples, the channel  1234  extends from the first face  1212  to the second face  1214 . In some examples, the channel  1234  includes a first interior face  1236 , a second interior face  1238 , and an upper face  1240 . In various examples, the channel  1234  is configured to accommodate the cam  1820  such that the cam  1820  can be rotated therein. 
     In various examples, the riser  1200  further includes one or more additional features configured to accommodate the actuation assembly  1800 . For example, as shown in  FIG. 6D , a bore  1232  is formed in the riser  1200 . In some examples, the bore  1232  is formed in the second side  1210  (or alternatively or additionally in the side  1208 ) and extends through a portion of or the entirety of the riser  1200 . As shown in  FIG. 11 , the shaft  1810  extends through the bore  1232  and the cam  1820  is positioned along the shaft  1810  such that the cam  1820  is positioned within the channel  1234 . 
     In various examples, the riser  1200  further includes one or more additional features configured to accommodate the separation assembly  1700 . For example, as shown in  FIGS. 6A and 6C , a bore  1242  is formed in the riser  1200  and extends from a top  1204  of the riser  1200  to an upper face  1240  of the channel  1234 . In various examples, the bore  1242  is an aperture through which a portion of the separation assembly  1700  extends such that the separation assembly  1700  can interface with and engage the actuation assembly  1800 . 
     As shown in  FIGS. 11 and 12 , the separation assembly  1700  and the actuation assembly  1800  are each received by the riser  1200  such that they are operable to engage one another. As shown, the retention member  1706  of the separation assembly  1700  extends into the channel  1234  and is situated adjacent the cam  1820  of the actuation assembly  1800 . As the shaft  1810  is rotated, the retention member  1706  follows an edge of the cam  1820 . Put differently, the retention member  1706  operates as a cam follower, as those of skill will appreciate. In various examples, the eccentricity of the cam  1820  causes the axial member  1702  of the separation assembly  1700  to translate as the shaft  1810  and the cam  1820  are rotated. As discussed above, this translation of the axial member  1702  causes at least of the upper and lower die plates  2100  and  2200  to translate relative to the other of the upper and lower die plates  2100  and  2200 . 
     Operation of the system  1000  in combination with the die cutter  2000  is illustrated in  FIGS. 11 and 12 .  FIG. 11  is a front view of the system  1000  with a die cutter  2000  mounted on the system  1000 . The system  1000  is illustrated in  FIG. 11  in a closed configuration (e.g., the upper and lower die plates  2100  and  2200  of the die cutter  2000  are not separated).  FIG. 12  is a front view of the system  1000  and die cutter  2000  of  FIG. 11  in an open configuration (e.g., the upper and lower die plates  2100  and  2200  of the die cutter are separated from one another, see e.g.,  FIG. 4 ). Accordingly, as shown in  FIGS. 11 and 12  the system  1000  is transitionable between the closed configuration and the open configuration. It will be appreciated that when the system  10000  is in the closed configuration, the separation assembly  1700  is in a closed configuration (e.g.,  FIG. 5 ), as discussed above. Likewise when the system  10000  is in the open configuration, the separation assembly  1700  is in an open configuration, as discussed above. 
     In various examples, prior to actuating the actuation assembly  1800 , the separation assembly  1700  is coupled with a die cutter  2000 , and the combined assemblies of the die cutter  2000  and the separation assembly  1700  are assembled onto the system  1000 . 
     Referring back now to  FIGS. 2 and 3 , in various examples, a separation assembly  1700  is coupled with the die cutter  2000 . In some examples, the upper and lower die plates  2100  and  2200  of the die cutter  2000  include a central bore  2112  and  2212 , respectively. In some examples, the axial member  1702  of the separation assembly  1700  is coupled with one of the upper and lower die plates  2100  and  2200 . While the illustrated examples of  FIGS. 2 and 3  show a plurality of fastening members  1708  and  1710 , it will be appreciated that the axial member  1702  may be coupled with one of the upper and lower die plates  2100  and  2200  in a variety of way, as discussed herein. The nonlimiting example of  FIGS. 2 and 3  includes a first fastening member  1708  and a second fastening member  1710  (e.g., wedge nut). As shown, the first fastening member  1708  and the second fastening member  1710  are coupled together such that the upper die plate  2100  is sandwiched between ends of the first and second fastening members  1708  and  1710 . In particular, the first fastening member  1708  includes an elongate portion  1712  that extends through the bore  2112  of the upper die plate  2100 . The elongate portion  1712  includes a threaded exterior  1714  and a threaded interior bore  1716 . In various examples, the second fastening member  1710  includes a threaded interior bore that is configured to mate with the threaded exterior  1714  of the first fastening member  1708 . In some examples, the second fastening member  1710  is a nut. 
     In various examples, the elongate portion  1712  of the first fastening member  1710  is received within the bore  2112  of the upper die plate  2100  from the top  2106  and extends through the upper die plate  2100  such that the second fastening member  1710  can be threadedly mated with the first fastening member  1708  at the bottom  2108 . In some examples, the first fastening member  1708  includes a head  1718  that is larger in cross section than is the elongate portion  1712  and the bore  2112  of the upper die plate  2100 . In various examples, the head  1718  prevents the first fastening member  1708  from being pulled through the bore  2112  of the upper die plate  2100  as those of skill will appreciate. In various examples, the second fastening member  1710  is threaded onto the first fastening member  1708  in a manner that sandwiches the upper die plate  2100  between the head  1718  of the first fastening member  1708  and the second fastening member  1710 . In some examples, one or more of the upper and lower die plates include a recess configured to receive the second fastening member therein. For example, as shown, the second fastening member  1710  is received within a recess  2114  of the upper die plate  2100 . It will be appreciated that such a recess provides that the second fastening member  1710  can be coupled with the first fastening member  1708  without preventing the upper and lower die plates  2100  and  2200  from collapsing against one another such that the bottom  2108  of the upper die plate  2100  contacts the top  2206  of the lower die plate  2200 . 
     It will be appreciated that a variety of alternative examples are envisioned for coupling the first fastening member  1708  to one of the upper and lower die plates  2100  and  2200 , and that the illustrated examples of  FIGS. 2 and 3  should not be construed as limiting. For instance, in another nonlimiting example, one or more of the bores  2112  and  2212  of the upper and lower die plates  2100  and  2200 , respectively, are threaded such that the first fastening member  1708  can be threaded into a bore of one of the upper and lower die plates  2100  and  2200 . Alternatively, in some examples, the axial member may be threaded directly into one of the bores  2112  or  2212  of the upper and lower die plates  2100  and  2200 , respectively. Alternatively, as mentioned above, the axial member  1702  may be coupled to one of the upper and lower die plates  2100  and  2200  via some other fastening means (e.g., welding, press fitting, etc.), as discussed herein. 
     With continued reference to  FIGS. 2 and 3 , in various examples, the axial member  1702  is threaded into the interior threaded bore  1716  of the first fastening member  1708 . As shown, the axial member  1702  is threaded into the interior threaded bore  1716  such that a portion of the axial member  1702  extends below the bottom  2108  of the upper die plate  2100 . In some examples, the lower die plate  2200  is disposed over the axial member  1702  such that the axial member  1702  extends through the bore  2212  of the lower die plate  2200  and below the bottom  2208  of the lower die plate  2200 . In various examples, the biasing member  1704  is disposed over the portion of the axial member  1702  that extends below the bottom  2208  of the lower die plate  2200 . In various examples, a retention member  1706  is threaded onto the axial member  1702  such that the biasing member is positioned between the retention member  1706  and the bottom  2208  of the lower die plate  2200 . As mentioned above, a variety of alternative configurations are envisioned wherein a biasing member may additionally or alternatively be positioned between the upper and lower die plates  2100  and  2200  and/or above the top  2106  of the upper die plate  2100 . 
     In various examples, the subassembly consisting of the die cutter  2000  and the separation assembly  1700  can be coupled with the system  1000  such that the actuation assembly  1800  can be utilized to cause a repeatable separation of the upper and lower die plates  2100  and  2200  during a cutting, punching, or stamping process. In various examples, the subassembly including the die cutter  2000  and the separation assembly  1700  is coupled with the system  1000  by inserting one or more portions of the separation assembly  1700  in the bore  1242  of the riser  1200 . As shown in  FIGS. 9 to 12 , the subassembly consisting of the die cutter  2000  and the separation assembly  1700  is received such that the retention member  1706 , the biasing member  1704 , and a portion of the axial member  1702  are disposed within the bore  1242  of the riser  1200 . As shown in  FIG. 11 , at least a portion of the subassembly consisting of the die cutter  2000  and the separation assembly  1700  extends through the bore  1242  and projects into the channel  1234  of the riser  1200 . Such a configuration provides that the actuation assembly  1800  can engage a portion of the separation assembly  1700 . 
     In various examples, one or more portions of the system  1000  are configured to hold one of the upper and lower die plates  2100  and  2200  while the actuation assembly  1800  and the separation assembly  1700  cause the other of the upper and lower die plates  2100  and  2200  to translate. As shown in  FIGS. 9 to 12 , the first and second stop bars  1300  and  1400  (including the wedge clamp  1600 ) engage one of the upper and lower die plates  2100  and  2200  and maintain a position of the engaged die plate while the actuation assembly  1800  and the separation assembly  1700  cause the other of the upper and lower die plates  2100  and  2200  to translate. As shown, a position of one or more of the first and second stop bars  1300  and  1400  can be adjusted relative to the riser  1200  for accommodating die cutters of varying shapes and sizes. Additionally or alternatively, as shown, a position of one or more of the first and second stop bar rails  1500   a  and  1500   b  can be adjusted relative to the riser  1200 . 
     Referring now to  FIGS. 11 and 12 , in various examples, the system  1000  is transitioned between the open and closed configurations by rotating the shaft  1810  about its longitudinal axis. It will be appreciated that while the illustrated examples of  FIGS. 11 and 12  include a lever  1830  that is actuated to cause a rotation of the shaft  1810  and the cam  1820 , a variety of other mechanisms may be utilized to cause a rotation of the shaft  1810  without departing from the spirit or scope of the present disclosure. For example, the shaft  1810  may be coupled to a foot pedal such that the shaft  1810  is rotated as the foot pedal is actuated or depressed. Additionally, the shaft  1810  may be coupled to a press such that the shaft  1810  is rotated to a position corresponding to a closed configuration as the press descends upon the die cutter  2000  and such that the shaft  1810  is rotated to a position corresponding to an open configuration as the press retracts away from the die cutter  2000  such that the stock material can be moved and the process can be repeated to press or cut another part out of the stock material. 
     As shown, as the shaft  1810  (and thus the cam  1820 ) is rotated, the cam  1820  engages the separation assembly  1700  and causes one or more components of the separation assembly  1700  to translate. In some examples, rotation of the cam  1820  from a first position to a second position causes the one or more components of the separation assembly  1700  to translate away from the base  1100 , while rotation of the cam  1820  from the second back to the first position causes the one or more components of the separation assembly  1700  to translate toward the base  1100 . 
     In some examples, the cam  1820  can be rotated from a first position to a second position, thereby causing the one or more components of the separation assembly  1700  to translate away from the base  1100 , while rotating the cam  1820  from the second position to a third position causes the one or more components of the separation assembly  1700  to translate toward the base  1100 . It will also be appreciated that, in various examples, the cam  1820  may be configured such that rotation of the shaft in either direction from an initial position causes a displacement of the separation assembly  1700  that results in one or more components of the separation assembly  1700  translating away from the base  1100  (e.g., separation of the upper and lower die plates  2100  and  2200 ), and wherein rotation back to the initial position causes a displacement of the separation assembly  1700  that results in one or more components of the separation assembly  1700  translating toward the base  1100  (e.g., collapsing of the upper and lower die plates  2100  and  2200  together or toward one another). In some nonlimiting examples, rotation from the first position to the second position includes rotating the cam  1820  approximately ninety (90) degrees, and rotating the cam from the first position to the third position includes rotating the cam  1820  approximately one hundred eighty (180) degrees. 
     In various examples, this translation of the one or more components of the separation assembly  1700  away from the base  1100  causes one of the upper and lower die plates  2100  and  2200  to translate away from another of the upper and lower die plates  2100  and  2200 . Specifically, as shown in  FIGS. 11 and 12 , as the cam  1820  is rotated, the cam  1820  engages the retention member  1706  and causes the retention member  1706  to translate away from the base  1100 . This translation of the retention member  1706  away from the base  1100  causes the axial member  1702  to translate away from the base  1100 , which causes the upper die plate  2100  to translate away from the base  1100 . In this example, because the first and second stop bars  1300  and  1400  (and the wedge clamp  1600 ) cause a position of the lower die plate  2200  is to be maintained relative to the riser  1200  (and thus the base  1100 ) as the cam  1820  is rotated, the upper die plate  2100  is translated away from the lower die plate  2200 . 
     Likewise, translation of the one or more components of the separation assembly  1700  toward the base  1100  causes one of the upper and lower die plates  2100  and  2200  to translate toward another of the upper and lower die plates  2100  and  2200 . This translation of the one or more components of the separation assembly  1700  (e.g., the retention member  1706 ) toward the base  1100  causes the axial member  1702  to translate toward the base  1100 , which causes the upper die plate  2100  to translate toward the base  1100 . In this example, because the first and second stop bars  1300  and  1400  (and the wedge clamp  1600 ) cause a position of the lower die plate  2200  is to be maintained relative to the riser  1200  (and thus the base  1100 ) as the cam  1820  is rotated, the upper die plate  2100  is translated toward the lower die plate  2200 . 
     In various examples, the amount by which the upper and lower die plates  2100  and  2200  can be separated (e.g., linear travel distance) when transitioned to the open configuration can be adjustable. For instance, as mentioned above, in some examples, the axial member  1702  is a threaded member that can be threadedly coupled to one of the upper and lower die plates  2100  and  2200 . Thus, in various examples, an amount the axial member  1702  is threaded into one of the upper and lower die plates  2100  and  2200  can be increased or decreased. In such examples, increasing the amount the axial member  1702  is threaded into the upper or lower die plate  2100  and  2200  reduces the degree of separation between the upper and lower die plates  2100  and  2200  when transitioned to the open configuration. Likewise, decreasing the amount the axial member  1702  is threaded into the upper or lower die plate  2100  and  2200  increases the degree of separation between the upper and lower die plates  2100  and  2200  when transitioned to the open configuration. In some examples, such variability is achieved because a smaller portion of the cam  1820  (e.g., a smaller portion of the edge of the cam  1820 ) engages the separation assembly  1700  when a greater length of the axial member  1702  is threaded into the upper or lower die plate  2100  and  2200 . Additionally or alternatively, the linear travel distance of die lifting assembly may be varied by interchanging the cam  1820  with one or more other cams having different profiles (e.g., different lobe profiles having different max lobe offsets and/or different rates of change or curvatures between a maximum lobe offset and a minimum offset). 
     While the illustrations and examples discussed above include a lever and camming element that operate to cause a separation of the upper and lower die plates, these examples and illustrations should not be construed as limiting. For example, it will be appreciated alternative systems may utilize one or more gear systems (e.g., worm, spur, ratchet/pawl, rack/pinion) with rotational and/or linear translation to cause such separation of the upper and lower die plates. For example, turning now to  FIGS. 13 and 14 , several alternative configurations are illustrated. 
       FIG. 13  includes a rack and pinion type configuration as an alternative to the camming element discussed above. In some examples, the axial member  1702  has a threaded end that extends through the riser  1200  and interfaces with a spur gear, threaded nut, or other element  1870  that is operable to cause linear actuation of the axial member  1702  as the element  1870  is rotated. In some examples, element  1870  is an annular element and includes a threaded bore configured to accommodate the threaded end of axial member  1720  such that relative rotational movement between the element  1870  and the axial member  1702  causes relative axial translation between the element  1870  and the axial member  1702 , as those of skill in the art will appreciate. 
     In some examples, the element  1870  operates in accordance with a rack element  1880 . For instance, in some examples, the element  1870  is a spur gear and includes a plurality of teeth about its peripheral edge such that the teeth are operable to interface with the rack element  1880  to translate linear motion of the rack element  1880  to rotational motion of the element  1870 , as those of skill will appreciate. A portion of the rack element  1880  has been removed in  FIG. 13  to show element  1870  and teeth  1872 . It should be appreciated that while element  1870  is shown with teeth  1872  about a peripheral edge, element  1870  may alternatively include teeth along a top or bottom surface thereof without departing from the spirit or scope of the disclosure. The rack element  1880  may extend along the first or second face  1212  and  1214  of riser  1200 . Alternatively, the rack element  1880  may extend through a bore made through riser  1200 , as those of skill will appreciate. 
     In some such examples, as the rack element  1880  is actuated (e.g., translated transverse to a longitudinal axis of the axial member  1702 ), the rack element  1880  causes element  1870  to rotate. Generally, the axial member is constrained against rotational movement relative to one or more of the upper and lower die plates. Thus, as element  1870  rotates, it is rotated relative to axial member  1702 , which causes relative axial translation between the element  1870  and the axial member  1702  as discussed above. As shown in  FIG. 13 , in various examples, one or more features or components constrain the element  1870  from axial translation relative to the riser  1200 ′. For example, as shown, a relief  1250  is formed in the riser  1200 ′ and sized to accommodate element  1870  and constrain element  1870  against axial translation along the longitudinal axis of the axial member  1702 . Accordingly, as those of skill will appreciate, the rotation of element  1870  is transferred to axial translation of the axial member  1702  and thus the upper die plate  2100 . It will also be appreciated that the amount of axial translation of the axial member corresponds with the degree through which the element  1870  is rotated. 
     It will be appreciated that the rack element  1880  may be actuated according to known methods, including such non-limiting examples as, a lever or a mechanical actuation system (e.g., a hydraulic or pneumatic system). 
       FIG. 14  illustrates an alternative lever-type configuration that includes a lever  1890  that can be actuated to cause axial translation of the axial member  1702 . As shown, the lever  1890  is coupled to the riser  1200  and the axial member  1702 . In various examples, the lever  1890  is coupled to the riser  1200  at a pivot point  1892 . In various examples, the lever  1890  includes a slot  1894 , wherein a pin  1896  extends through the slot  1894  and couples to the axial member  1702 . Those of skill in the art will appreciate that the slot  1894  provides that, as the lever  1890  is pivoted about the pivot  1892 , the walls of the slot  1894  engage the pin  1896  and cause translation of the axial member  1702 , and provide that the pin  1986  can translate relative to the slot  1894 . 
     It will be appreciated that while the lever  1890  is shown as being coupled to the riser  1200  at pivot  1892  such that the lever  1890  is coupled to the axial member  1702  between the pivot  1892  and a handle  1898  of the lever  1890 , in other examples, the lever  1890  may be coupled to the riser  1200  at a pivot  1892 ′ such that the pivot  1892 ′ is situated between where the lever  1890  is coupled to the axial member  1702  and the handle  1898 . Such a configuration provides an inverse relationship between the actuation direction of the axial member  1702  and the lever  1890  (e.g., downward actuation of the handle  1898  results in upward actuation of the axial member  1702 ). It will be appreciated that the lever  1890  may be actuated according to any known methods including those discussed herein. 
     Numerous characteristics and advantages have been set forth in the preceding description, including various alternatives together with details of the structure and function of the devices and/or methods. Moreover, the inventive scope of the various concepts addressed in this disclosure has been described both generically and with regard to specific examples. The disclosure is intended as illustrative only and as such is not intended to be exhaustive. It will be evident to those skilled in the art that various modifications may be made, especially in matters of structure, materials, elements, components, shape, size, and arrangement of parts including combinations within the scope of the disclosure, to the full extent indicated by the broad, general meaning of the terms in which the appended claims are expressed. To the extent that these various modifications do not depart from the spirit and scope of the appended claims, they are intended to be encompassed therein.