Abstract:
A track and punch SMR marking device, including a base, the base mounts for adjustment an SMR (spherically mounted retro-reflector), which in cooperation with a laser tracker beam locates the device precisely over an area where a punch mark is to be made, the base includes an upright sleeve, for holding a striker shaft, the striker shaft, at its lower end, includes a bevel, mating with the inclined surface of a cross slide, the cross slide, when it is urged forwardly, depresses a punch forcing it downwardly so as to provide a punch point or indentation upon the component to be worked.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
   This continuation patent application claims priority to the non-provisional patent application having Ser. No. 10/640,285, which was filed on Aug. 13, 2003, now abandoned which claims priority to the provisional patent application having Ser. No. 60/404,546, which was filed on Aug. 20, 2002. 

   BACKGROUND OF THE INVENTION 
   This invention relates generally to a punching device, and more specifically, to a particularly constructed track and punch spherically mounted retro-reflector marking device for use for providing precision marking of a component to be drilled, or the like. 
   A variety of center punching devices and assemblies have long been available in the art. These devices may undertake configuration of nothing more than a punch, that can be lowered into a marking position, provide a slight indentation into the part to be worked, such as by drilling, etc., but obviously precision is not the end result, nor is obtained, with these types of earlier devices. This day and age, it is not unusual to require the marking, and eventual drilling or other work to be performed upon a component, within tolerances that may be as tight as ten thousandths of an inch. Under the circumstances, it is required that precision marking be initially conducted, even under precise laser tracker positioning instrumentation, to assure that such tolerances can be met, when precision machining is undertaken. 
   Examples of earlier type of punching assemblies can be seen in the Goldsmith, Jr., U.S. Pat. No. 2,730,811 that shows a center punching assembly. It includes a spring biased punch, which is normally elevated, as can be noted, such that when the instrument is positioned approximately where a punch is to be made, incorporates a magnifying lens, to provide for some degree of perfection in the observance as to where the punch is to be made, in order to furnish an increased degree of accuracy, as noted. 
   The patent to Wiltermood, et al, U.S. Pat. No. 4,521,968, shows an apparatus for mapping the inner surface of a cylinder utilizing a laser to align a spider disposed within the cylindrical surface. This device shows the usage of a laser means, for gaging the precise locations for mapping the internal areas of a cylinder, as can be noted, but does not include any type of technology for use for scribing or punching a demarcation point, where a further operation is to be performed, such as drilling, etc. 
   The patent to Webb, U.S. Pat. No. 5,675,899, shows a rotary saw with laser beam alignment. This device is pertinent from the standpoint of showing a laser, for providing a guideline for cutting with a rotary saw, as can be noted. Thus, the use of an instrument, with the laser, to provide for some degree of precision in usage of the instrument, is generally disclosed in this prior art. 
   The patent to Rando, U.S. Pat. No. 5,784,793, discloses a marking template for construction lasers. This device also uses lasers, for providing a marking at a construction site, but the equipment used, and its method of operation, is quite different from the current invention. Rando produces its own discrete results. The use of lasers with a tool, on the other hand, is noted in this patent. 
   The patent to Kousek, et al, U.S. Pat. No. 5,829,147, shows an apparatus for applying marks to surfaces. Once again, this is a device for marking surfaces, at constructions sites, such as upon walls and ceilings, through the use of a photo electric detector device. This device broadly uses lasers for marking purposes, but it is of a different construction, and for a different use, than the instrument under consideration in this application. 
   The patent to Kelly, U.S. Pat. No. 5,862,727, shows a laser arbor. This laser arbor will provide and display a cutting line on a work piece, apparently through the use of a laser. 
   The patent to Cericola, U.S. Pat. No. 5,894,675, shows a combination tool. This combination tool is for use for measuring, eveling, squaring, and plumbing operations. But, it does not appear to be used for facilitating the highly accurate usage of a punch, as for drilling and related purposes. 
   Finally, the patent to Cutter, U.S. Pat. No. 5,918,523, discloses a system for guiding a cutting tool. Once again, this device uses a laser beam, for providing guidance to the cut line to be made upon a work part, and is for use in conjunction with a cutting tool, as defined. Hence, the patent is pertinent from the standpoint of showing the utilization of lasers in combination with an item of machinery, such as a cutting tool, but that is the extent of its similarity to the device of this current invention. 
   It does not appear, from the prior art as known, that any one has provided a structured device that incorporates a spherically mounted retro-reflector or related device, and utilizing the laser beam to provide for its precise setting during usage. 
   SUMMARY OF THE INVENTION 
   This invention related principally to a track and punch device, utilizing a spherically mounted retro-reflector, that is mounted in a nest, for providing very precise punching upon a part to be worked, so as to add to the high accuracy of any machining operation performed. 
   This invention contemplates the formation of a punching device, that can be used to provide a very tiny punch spot, with a particular degree of precision, on a metal or other surface to be worked, to provide guidance to a drill, or other instrument, when operated. The device is very precise in its setting, and operates in conjunction with a laser tracker type of instrumentation, that provides for the very precise setting of the punch, before the punch is activated and scribes a punch point. 
   For example, if a large metal surface needs a hole drilled at a very precise location, even at tolerances previously reviewed, a laser tracker will be set up, to provide for a precise location with respect to where the hole is to be drilled or reference mark is to be made. Then, this instrumentation, and its SMR (spherically mounted retro-reflector), is set up so that the laser beam enters the SMR, is reflected by its polished aluminum or silver surface internally of it, and when the beam is directed back towards the emitting instrument, at a precise setting, then the operator will know that this punch is set at the precise position for providing the required punch mark. When that occurs, then the operator simply needs to hammer upon the striker, at its upper end, which pushes the cross slide laterally, as the cross slide moves to the side, it compresses the punch downwardly, against the O rings, allowing its pointed bottom end to scribe a point upon the surface, where the drilling is to take place. The slide has a spring at one end, and will force the cross slide back towards its static position, once the punch is made, and the point scribed. Various magnets are also provided upon the device in order to afford its retention, to the surface, particularly metal, to which the device is applied, in preparation for its laser set up, and punching of the scribed point. 
   The instrumentation includes a base, having the embedded magnets or other retention means therein, the base incorporates a centralized aperture, through which a punch locates, when actuated. A cross slide is provided within the base, spring biased to a steady state condition, but when the cross slide is forced by means of hitting upon a striker, it forces the punch downwardly, to provide a point where further machining is to take place, such as a drilling operation. 
   The base includes an upright sleeve, for holding the striker shaft, and a clamp mounts upon the sleeve, held in position by means of a retainer nut, or securing a spherically mounted retro-reflector in place, that can be manipulated, to any angle, for cooperating with a laser beam, such as with a surveying instrument, that provides for the precise setting of the device, the location of its punch point at a very precise position where a mark must be embedded into the material that is subsequently to be machined as by drilling, or the like. 
   It is, therefore, the principal object of this invention to provide a highly precise punching device that cooperates with the laser tracker, and a spherically mounted retro-reflector, for demarcating a point upon any part to be further worked, as by drilling, or the like. 
   Still another object of this invention is to provide a conveniently and compact type of marking device, readily disposing a striker for manipulating to furnish a punch point on a component to be further worked. 
   Still another object of this invention is to provide means for mounting of a spherically mounted retro-reflector to a punching device, and through cooperating with guidance means, such as a laser tracker, affords its precise setting for marking a component to be further machined. 
   Yet another object of this invention is to provide a punching device, that automatically resets itself for further usage, once a scribed or punched mark has been delineated within a component to be worked. 
   Still another object of this invention is to provide a clamping means for use in conjunction with a punching device for securing an SMR in place. 
   Yet another object of this invention is to provide means for retention of an SMR in place, through the combination of a clamp, and a positioning magnet, provided upon the punching device. 
   These and other objects may become more apparent to those skilled in the art upon the review of the summary of the invention as provided herein, and upon undertaking a study of the description of the preferred embodiment, in view of the drawings. 

   
     BRIEF DESCRIPTIONS OF THE DRAWINGS 
     In referring to the drawings,  FIG. 1  provides a side schematic view of the SMR punch device of this invention; 
       FIG. 2  provides an oblique view of the punch device of this invention; 
       FIG. 3  provides an oblique opposite side view of the punch device of this invention; 
       FIG. 4  provides a front view of the punch device; and 
       FIG. 5  discloses the punch device, in position, through the use of its laser tracking, in preparation for hitting by an instrument to provide scribing of a point or mark upon components to be further machined. 
   

   DESCRIPTION OF THE PREFERRED EMBODIMENT 
   In referring to the drawings, and in particular  FIG. 1 , the track and punch SMR marking device of this invention is readily disclosed, as at  1 . The structure includes a base member  2  which has embedded therein one or more magnets  3  which are designed for temporarily affixing the device to the surface to be marked, and if it is of a metallic substance, the magnets aid in holding the set device in place. Extending upwardly is an attached sleeve  4 , as can be noted, extending upwardly from the approximate back end of the base  2 . 
   The base includes an upwardly extending integral portion  5 , which includes a further magnet  6  provided within a counterbore, and has an opening  7  furnishing slightly beveled edges  8 , around its perimeter, and it is designed to provide for sliding seating a spherically mounted retro-reflector  9  as can be noted. A magnet retainer clip  6   a  provides for retention of the magnet in place. In addition, negative rotation notch  5   a , provided at the front of the base portion  5 , aids in the retention of the retro-reflector  9  in place, during adjustment, and when fixed into position and allows rotation of the SMR below horizontally. In able to arrange the SMR, or its frontal opening, outwardly within the contours of the notch  5   a , such allows for reception of a laser beam which may project upwardly from a lower position, or upwards from upon the ground. Such a retro-reflector incorporates optics and is used in conjunction with a laser tracking instrument, such that when a laser beam enters into the reflector, and the reflector is at a precise precision where it is supposed to be arranged, the laser beam will be reflected back on itself, to indicate that a perfect setting has been made for the punch device. A clamp arm  10  is mounted upon the sleeve  4 , and is held in position by means of a retainer nut  11 . The clamp arm is designed to provide for embracing the upper surface of the SMR, to reasonably affix it in position, once it has been installed for usage. Then, the retainer nut can be tightened, once a fixed setting has been achieved, to retain that precise positioning. Or, the retainer nut can be loosened, so as to allow for the SMR to be readjusted in its optical setting. Such an SMR can be obtained from any of the following companies: 
   Automated Precision, Inc., of Rockville, Md.; Leica Geosystems, Inc., of Norcrosse, Ga.; Faro Technologies, Inc., of Lake Mary, Fla.; and Plx, Inc., of Deer Park, N.Y. 
   Provided through a channel  12  furnished in the base is a cross slide  13 , which is spring biased, at its front end, by means of the spring  14 . At the underside of the cross slide is provided a cut out section  15 , which is beveled, as noted at  16 , and located within this cut out portion of the cross light is the upper end of the punch  17 , which sits within an opening  18  formed of the base. Extending integrally downwardly from the member  17  is an integral shank  19 , and projecting from its bottom is the punch point  20  as can be noted. Two O-Rings  21  normally biases the punch upwardly, as when not in use. But, when the cross slide slides to the front, its bevel  16  engages the corresponding beveled surface  22  of the upper part of the punch, and in this manner forces the punch downwardly, so that its punch point  20  can provide a mark or indentation upon the surface to be worked. 
   Extending upwardly within the sleeve  4 , and through the retainer nut  11 , is a vertically arranged striker  23 . The bottom end of the striker is connected with a enlarged base  24 , which is inclined, as at  25 , and which engages a corresponding incline surface  26  provided at the back edge of the cross light  13 , as can be noted. Thus, when pressure or a hammer is impaled upon the striker  23 , at its upper end, the striker rapidly descends, its beveled surface  25  rides upon the beveled surface  26  of the cross slide, thereby forcing the cross slide rapidly towards the front of the base  2 . Hence, as this occurs, the inclined surface  26  of the cross slide encounters the beveled edge  22  of the punch, forcing it downward, so that its punch point  20  can provide for a marker indentation upon the component to be worked. 
   It can also be noted that the SMR, when set upon the device, appears to be perfectly aligned, at its mid-point, approximately at the location  27 , above the exact lower point of the punch point  20 , as can be noted. This is what achieves the close tolerence alignment of the punch, over the location to be indented, for component working. In addition, the precise positioning of the SMR, as previously commented, is done through the use of laser telemetry, and precision location through the use of laser tracker instrumentation, such as well know in the surveying art. 
   As can be noted in  FIG. 2 , an overall view of the track and punch SMR marking device of this invention is readily disclosed. The SMR  9  is retained for safety by means of the clamp  10  in position, and once its angulation is established, as can be noted, it can be protected from possibly dislodging from the magnetic nest by means of tightening of the retainer nut  11 , as noted. All of these instrumentations are fixed in position upon the base  2 , and its integrally upwardly extending boss  5 , as previously explained. 
   The tracking and punching device is also shown in  FIG. 3 , where the SMR  9  is angulated directly upwardly, during its usage and application. 
     FIG. 4  provides a front view of the device, showing its various operating components, as previously reviewed. Finally,  FIG. 5  shows the device, when set in position upon a component, as at C, to be worked, and being hit by a hammer or mallet H, where it will force its punch point  20  to furnish an indentation upon the component C, at the precise location, as established by the SMR, and its accompanying laser tracker, to provide an indication where further working, such as drilling, shall take place upon the said component, during its fabrication. These are examples as to how the device is applied, to furnish precision marking upon a component to be worked, to maintain close tolerances as required in precision machining this day and age. 
   Variations or modifications to the subject matter of this invention may occur to those skilled in the art upon review of the disclosure as provided herein. Such variations, if within the spirit of this development, are intended to be encompassed within the scope of the invention as defined. The description of the preferred embodiment, and the schematic showing the illustration of the device of this invention, are set forth for illustrative purposes only.