Abstract:
A single and multiple abrasive structure support system has a multiple support structure which facilitates use of snail lock and Frankfurt shoe adaptive support with a stepped surface which enables the snail lock adapter to enabling support of an abrasive structure beyond and at a distance clearance from Frankfurt shoe rails. The single abrasive structure support includes a snail lock. Both single and multiple abrasive structure support systems incorporate a pair of plates for absorbing force and energy, especially resulting from uneven surfaces being textured, such as stone.

Description:
FIELD OF THE INVENTION 
     The present invention relates to improvements in the field of automated machine processing of surface polishing, finishing and texturing, and in particular abrasive structure supports, both single and multiple, which provide increased attachment and use access, and especially which adapt the snail lock or similar system for easier and more widespread use and enable both snail lock and Frankfurt shoe to be used in a multiple support device to enable users of general CNC machinery to more easily perform all of the above more easily. 
     BACKGROUND OF THE INVENTION 
     Known specialized machinery for surface texture processing is expensive. Abrasive media structures in specialized machinery utilize a large working tool support for applying an abrasive force to a material to be surface processed. Automatic surface treatment machines (which include polishing, texturing, brushing and the like) are powerful, and some method of providing abrasive force and power which protects the abrasive tools and machinery from damage should be used. Specialized abrasive media structures are typically used with a two plate driver system as a pair of plates arranged so that a bottom plate carries the abrasive media, a top plate drives the bottom plate through some vertically resilient structure which allows the bottom plate to be upwardly displaced by pressure of the surface being worked due to any non-flat areas of the surface (typically stone) being worked. 
     For users of general CNC vertical spindle machines for surface texture processing is fraught with problems, including problems with setup, problems with handling non-flat surfaces, and problems in setting up the use of a general vertical turning center to handle surface texturing. A specialized tool working support represents an investment for the user that may only engage with certain abrasive tools. A user must then purchase a variety of types of abrasive working support tools, one for every style and size of abrasive device to be used. 
     In other cases the user must either create that user&#39;s own specialized tool working support (an expensive and time consuming proposition) or try to clumsily modify other specialized tool working supports which may not be intended for use with the abrasive device in stock. A specialized tool working support may have such specific structures that gaining access to the structures to change them can be a significant and time-consuming challenge. In other instances, a user that has a particular type of specialized tool working support, may not have availability of the abrasive device needed, either in stock or available commercially. 
     Strength of mounting and ability for use of a variety of sizes of abrasive structures is also a problem. Conventional abrasive structures found around the shop and which have a manual grinder connection may be attempted to be used, but this type of manual connection while sufficient for manual use is weak by comparison and may likely break when used in automated machinery, causing damage beyond the damage just to the abrasive structures. The typical manual mounting system for abrasive structures is that of a snail lock device with a ⅝″-11 pitch or an M-16X2 female threaded opening for mounting to a manual grinder on one surface with a snail lock structure on the opposing surface allowing the device to be attached and driven by a hand held electric grinder. The attachment possible utilizing this type of connection is limited in strength of connection and is also limited in that no access is possible through the center of the device due to the small size of the connection, ⅝″ diameter, and the fact that the connection is made via a threaded member that is solid in nature. In the case of a resilient device comprised of an upper and lower plate with an abrasive structure being mounted to the lower plate it is not possible to have access to the upper plate axially from the exposed side of the lower plate without disassembling the lower plate from the overall assembly, a time consuming procedure. As but one example, an extensive change out of the structures on the bottom plate might be required to switch from Frankfurt shoe style attached abrasive devices to a snail lock series of abrasive devices. Many hours can be spent over the course of a production year changing between the two systems. The economic disadvantages of the alternative of having a different system for each type of abrasive media are only made worse in the case of changing between different sizes and different types of abrasive devices. 
     For example, the conversion from a Frankfurt shoe to a snail lock system would involve un-bolting three pairs of angled shoe holders, at two bolts per holder, and bolting in for example three specialized female snail lock attachment plates, before locking the individual snail lock brush-type abrasives. If the user wanted to have a pair of different bottom plates upon which snail lock and Frankfurt shoe were attached, the bottom plate and all of its component parts would be required to remove and replace onto the structure supporting such plates. 
     Neither of these two onerous disassembly/assembly prospects is of much help to the CNC user who does not usually perform enough surface treatment to own a specialized surface texturing machine, and who needs to have surface treatment capability economically. Further, where the amount of surface finishing is even more occasional, a user&#39;s having to keep two or more sets of larger abrasive working tool holders is both expensive in terms of cost investment, tool storage, and sacrificed floor area. 
     Utilization of components is another factor. A specialized upper tool holder structure useful only for stone texturing, for example, and which is very rarely used represents an expenditure for a structure which is generally not utilizable elsewhere. Users need to have the ability for increased processing capability and task flexibility at a minimum investment cost and setup time, and with overall minimum idle inventory. Any system which can enable the least expensive and greatest flexibility use with minimum cost and time can become a valuable, cost advantage standard. 
     What is needed in the area of surface texturing is a system which will provide: (1) minimum changeover from one type of abrasive structure to the other, such as from Frankfurt shoe to snail lock; (2) Utilization of tool holders which are very likely already in the user&#39;s inventory; (3) easy access for inspection, assembly and dis-assembly should problems or the need for small repairs arise; (4) maximum utilization of different sizes of abrasive structures which the user has on hand; (5) an attachment system for abrasive tools which is forgiving of surface defects and protects against most types of breakage during surface texturing operations; and (6) a system having greater support for abrasive tools commensurate with the CNC environment. 
     SUMMARY OF THE INVENTION 
     A system is disclosed which embodies the ability to enable a user to have ease of use of a single or multiple snail lock brush-type abrasive in more than one size (typically four inch and five inch diameter, with the five inch diameter system also having the capability of six inch structures). The heart of the system is a snail lock adapter having a number of advantageous characteristics including: (1) the ability to mount the adapter into a threaded aperture or bore, (2) a relatively large diameter (two and a half inches) to enable access through the adapter either in the direction of the adapter&#39;s attachment to another structure or to the snail lock or other component it secures, (3) the stepped ability to mount the adapter so as to accommodate or provide clearance to other structures, such as the Frankfurt shoe, and (4) quick change ability due to the use of a washer in conjunction with threaded components to inhibit sticking. A multiple or single abrasive structure support also gives the ability for it to be attached to other structures using a center placed, easily accessible hole which can be engaged by a number of structures. 
     A system is disclosed which embodies the ability to quickly interchange between different sizes and styles of abrasive structures, as well as a resilient plate system which works with a standard tool holder. More specifically, the system includes a large dual plate resilient structure with three pairs of Frankfurt shoe rails and three threaded openings accommodating snail lock adapters each of which fit within the area of the three pairs of Frankfurt shoe rails without either interfering with, or being interfered with the Frankfurt shoe rails. The accommodating snail lock adapters support the brush-type snail lock abrasives using a large thread engagement with the bottom plate and support the brush-type snail lock abrasives in a position displaced farther from the bottom plate by the height of the Frankfurt shoe rails. Switching from snail lock to Frankfurt shoe abrasive structures is as simple as easily unscrewing and removing the three accommodating snail lock adapters. Once the adapters are removed, the Frankfurt shoe style abrasive structures can be slid between the Frankfurt shoe rails and into a radially outward most and even locking position and held in place by centrifugal rotation of the bottom plate during the stone texturing process, for example. Although the multiple abrasive structure support has three abrasive structure support positions, a two position, or four or more position system is contemplated. 
     Alternatively, if it were desired to use the large dual plate resilient structure with the three pairs of Frankfurt shoe rails removed, absent or simply not needed, a set of three snail lock adapters lacking an accommodating step could be used to threadably attach to the bottom plate and to accept the snail lock supported abrasive structures. In the case of the large dual plate resilient structure, it is driven by an ordinary tool holder. Thus, when the large dual plate resilient structure is not being used, its tool holder can be employed elsewhere if so desired. 
     The system also includes a small dual plate resilient structure which is utilizable with the aforementioned snail lock adapters lacking an accommodating step (where it is desired to reduce the effective height by the absence of the accommodating step) and which is threaded into a large diameter threaded bore in a bottom small plate which is resiliently mounted with respect to a top small plate in a manner similar to that for the large dual plate resilient structure. Changing from one size of snail lock abrasive structure to another size of snail lock abrasive structure (for example from a four inch diameter abrasive structure to a five inch diameter abrasive structure) simply involves changing out the aforementioned snail lock adapters (for example from a four inch diameter adapter to a five inch diameter adapter). The small dual plate resilient structure is also driven by an ordinary tool holder and when the small dual plate resilient structure is not being used, its tool holder can be employed elsewhere if so desired. 
     The large and small dual plate resilient structure provides a central opening in the lower plate to enable access to an end cap secured with a bolt. Coolant flow through capability is an incidental aspect of the inventions. Depending upon the thickness of the plates and the size of the end caps, a number of spacers may be provided to provide spacing between the end cap and the bottom of the top plate to enable the ordinary tool holder to be securely attached to the top plate. A typical ordinary tool holder which works well is the 35 millimeter toolholder inserted into a corresponding aperture in the top plate and secured with the end cap and possibly spacers. The attachment of the ordinary tool holder into either top plate of the large and small dual plate resilient structure occurs in the same way. 
     To further facilitate manipulation and ease of handling, a pair of bar wrenches with pin projections may be provided. The bar wrenches can fit through openings in the structures which connect the two plates and the bar wrench pins can engage small blind bores placed strategically in the material to facilitate engagement and turning with respect to the large and small dual plate resilient structure and also for stability during manipulation of the bolt securing the end cap, and the snail lock adapters. Snail lock adapters may preferably be secured by a two and a half inch diameter one-eighth inch pitch connection. Nylon gaskets can be used between a large or small lower plate and the snail lock adapters to prevent marriage of materials, especially under threaded friction connectivity. The position of turning of the large and small dual plate resilient structure will preferably be in a direction such as will cause secure tightening of the snail lock adapters. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention, its configuration, construction, and operation will be best further described in the following detailed description, taken in conjunction with the accompanying drawings in which: 
         FIG. 1  is a perspective view looking upward into a large dual plate resilient abrasion support head with the tool holder shown exploded above as it might be during removal of the tool holder after use, and predominantly with the bottom structures shown exploded in a manner in which a user might convert from Frankfurt shoe to snail lock usage; 
         FIG. 2  is a similar exploded view as seen in  FIG. 1 , but taken from the top and illustrating further details of components not seen in  FIG. 1 ; 
         FIG. 3  is a complete exploded view of the multiple abrasive structure support which enables illustration of still further structures; 
         FIG. 4  is a closeup perspective view of the snail lock adapter shown in  FIGS. 1-3 ; 
         FIG. 5  is a closeup bottom view of the snail lock adapter shown in  FIGS. 1-4  and illustrating the female snail lock connector and blind bores for engagement with a bar wrench; 
         FIG. 6  is a closeup plan view of the snail lock adapter shown in  FIGS. 1-5 ; 
         FIG. 7  is a perspective view of the assembled multiple abrasive structure support configured with three snail lock adapters and series of brush-type snail lock abrasive structures; 
         FIG. 8  is a perspective view of the assembled multiple abrasive structure support with the three snail lock adapters and series of brush-type snail locked abrasive structures removed and shown with a set of three Frankfurt shoe supported abrasive members in place between Frankfurt shoe first and second rails; 
         FIG. 9  is a perspective exploded view looking downward into a second embodiment which is a small dual plate resilient abrasion support head; 
         FIG. 10  is a perspective view of the small dual plate resilient abrasion support head of  FIG. 9  but shown in assembled position; 
         FIG. 11  is a sectional view of the snail lock adapter shown in  FIGS. 9 &amp; 10  which lacks the extension step and general outwardly radial surface which provide an axial extension of the snail lock adapter shown in  FIGS. 1-3 ; 
         FIG. 12  is a plan view of a first embodiment of a wrench which is utilizable predominantly with either the multiple abrasive structure support or the small dual plate resilient abrasive support; 
         FIG. 13  is a plan view of a second embodiment of a wrench which is utilizable predominantly with the snail lock adapters having corresponding blind bores, used to tighten or loosen the snail lock adaptors mounted on either the multiple abrasive structure support or the small dual plate resilient abrasive support. One side of the wrench has protruding pins located in such a pattern as to engage one size snail lock adaptor while the other side of the wrench has protruding pins located in such a pattern as to engage a second size snail lock adaptor; 
         FIG. 14  is a partially exploded view of a manual grinder using the much smaller and less reliable “⅝-11 pitch or M-16X2 connector system in contrast to the strength, interchangeability and reliability of the inventive system of  FIGS. 1-13 ; and 
         FIG. 15  is a perspective view of the underside of a hand grinder ⅝-11 or M-16X2 snail lock connector seen in  FIG. 14 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to  FIG. 1 , a partially exploded perspective view looking upward and underneath a LEATHER HEAD or multiple abrasive structure support  21  is shown. In the description that follows an ordinary tool holder  23  will be illustrated as the structure which enables support of the multiple abrasive structure support  21 , although a variety of other structures could be used. Ordinary tool holder  23  may have a thirty-five millimeter insertion or securing portion  25 . This illustrates that the ordinary tool holder  23  may be removed from the multiple abrasive structure support  21  and placed into other service. Ordinary tool holder  23  may be secured against another structure using a bolt  27 . Bolt  27  secures an end cap  31  which may compress an optional spacer ring  33 . 
     Continuing to Refer to  FIG. 1 , and beneath the ordinary tool holder  23 , a resilient two plate support assembly  35  is shown. A top plate  41  is mounted to a bottom plate  43  by a series of spring assemblies  45 . The spring assemblies  45  enable the bottom plate  43  to rise to compress against the top plate  41  against the pressure from the spring assemblies  45 . As will be seen, the spring assemblies include a controlled sliding of the bottom plate against the top plate, and insure that any turning force exerted on the top plate  41  will be instantly and tightly transmitted to the bottom plate  43 . 
     Continuing to Refer to  FIG. 1 , and beneath the bottom plate  43  three pairs of Frankfurt shoe rails are seen as a first rail  51  and a second rail  53  in each two rail pair. Seen between each pair of first and second rails  51  and  53  is a threaded bore  55  extending into the bottom plate  43 . Bottom plate also has a central smooth bore access aperture  57  which enables access to the thirty-five millimeter toolholder  23  insertion or securing portion  25  so that the bolt  27  can be easily tightened and loosened. 
     Beneath and separated from the bottom plate in  FIG. 1  are a series of three snail lock adapters  61 . Each snail lock adapter  61  has a female snail lock opening  63  and a male thread  65  for engaging the threaded bore  55  extending into the bottom plate  43  to secure the three snail lock adapters  61  to the bottom plate. Male thread  65  surrounds a wide bore  66  which allows for access into and through the snail lock adapters  61  from the top, or point of attachment to the lower plate  43  as well as quick threaded insertion and removal from the bottom plate  43 . The design of the snail lock adapter  61  makes it easy to install on any structure with the simple expedient of forming a threaded hole. Support for snail lock adapters  61  using can then be derived with a wider stance, stronger mounting and onto a larger structure while also providing access to other surfaces axially superior to the snail lock adaptor  61  itself. Beneath the three snail lock adapters  61  are see a series of brush-type abrasive structures  67 , each having a male snail lock member  69  at its top side for enabling lockable securing of the brush-type abrasive structures  67  into the snail lock adapters  61 . Into the male snail lock member  69 , a bore  70  may already exist as it aids in threaded attachment to ordinary grinders. 
     Referring to  FIG. 2 , a similar exploded view as seen in  FIG. 1 , but taken from the top, illustrates further details of components not seen in  FIG. 1 . Top plate  41  is seen to have a series of 6 openings  71  to both lighten the multiple abrasive structure support  21  and to provide manual access to any structure inside the multiple abrasive structure support  21 , between top plate  41  and bottom plate  43 . A central thirty-five millimeter aperture  72  will interfit with the thirty-five millimeter insertion or securing portion  25  of ordinary tool holder  23 . A series of bolts  73  (heads are seen) which have an abbreviated threaded section for direct threaded engagement into lower plate  43 . 
     One of a series of openings  75  are seen in the bottom plate  43  to both lighten the multiple abrasive structure support  21 , to provide even further additional manual access to any structure inside as well as to allow coolant to pass through the plate to the material being worked by the device. Some further detail of the three snail lock adapters  61  are seen including an extension step  77  which is used to limit the extent of travel of the male thread  65  into the threaded bore  55  so that a flat back  79  of the structure of the snail lock adapter  61  supporting the female snail lock opening  63  (indicated by a hooked underside pointing arrow) will be spaced apart from an underside of the bottom plate  43  by a distance sufficient that the flat back  79  of the structure of the snail lock adapter  61  supporting the female snail lock opening  63  will clear and not touch or interfere with the first and second Frankfurt shoe rails  51  and  53 . A series of openings  80  (which can be a bore) are seen on the top of the upper plate and will also been seen on different structures to facilitate engagement and turning by a bar wrench which has projections that engage such placed blind bores. The use of openings  80  which enable engagement with a bar wrench will assist the user in turning, stabilizing, and manipulating other structures while keeping the multiple abrasive structure support  21  steady. 
     Referring to  FIG. 3 , a complete exploded view of the multiple abrasive structure support  21  enables illustration of still further structures. The series of bolts  73  are shown to have a smooth main portion  81  over a significant part of its length, terminating at an abbreviated threaded section  83 . Bolts  73  pass through apertures  85  located in upper plate  41 . Directly underneath the threaded bores  85  a series of bushings  87  are seen, which will surround the smooth main portions  81  and which may preferably provide the closest bearing against the smooth main portions  81  when the bottom plate  43  rises under pressure to push the bolts  73  above the surface of the top plate  41 , especially against the downward bearing force of a set of associated springs  89  which bearingly oppose upon both the bushings  87  and the bottom plate  43 . Bushings  87  may be preferably made of brass, while the top and bottom plates  41  and  43  may be made of aluminum. The series of bolts  73  abbreviated threaded section  83  is for direct threaded engagement into threaded apertures  90  located in lower plate  43 . 
     also seen in exploded view are the Frankfurt shoe first and second rails  51  and  53 , each of which has a bolt aperture  91  for enabling them to be secured to the underside of bottom plate  43  with bolts  93 . Also seen for the first time are washers  95  which may be made of plastic, nylon or the like and which have a series of radial cuts  97  which enable the washers  95  to be fitted over the male thread  65  of its associated snail lock adapter  61 . The washer will help prevent metal to metal bonding between the radial face of the extension step  77  and the material of the underside of the lower plate  43  adjacent the threaded bore  55  extending into the bottom plate  43 . One of the snail lock adapters  61  is shown in sectional view to illustrate its side sectional profile. 
     Referring to  FIG. 4 , a closeup perspective view of the snail lock adapter  61  shown in  FIGS. 1-3  further illustrates a general outwardly radial surface  99  having an axial height which generally represents a magnitude which is sufficient to lift the flat back  79  of the structure of the snail lock adapter  61  supporting the female snail lock opening  63  to a position over and accommodating the height of the Frankfurt shoe first and second rails  51  and  53 . Also seen is a scalloped outer surface  101  at an outer periphery of the snail lock adapter  61  which can assist in manual turning of the snail lock adapter  61 . 
       FIG. 5  is a closeup bottom view of the snail lock adapter  61  shown in  FIGS. 1-4  and illustrating a view looking into the female snail lock opening  63 . Also seen are a pair of the openings  80  which may be located on a number of components shown in the drawings, including the multiple abrasive structure support  21 . Referring to  FIG. 6 , a closeup plan view of the snail lock adapter  61  shown in  FIGS. 1-5  is illustrated. 
     Referring to  FIG. 7 , a perspective closeup view of the assembled multiple abrasive structure support  21  configured with three snail lock adapters  61  and series of brush-type abrasive structures  67  is shown. The three snail lock adapters  61  are shown with the scalloped surfaces  101  at their outer periphery, with the scalloped surfaces  101  extending over and out of interference with the Frankfurt shoe first and second rails  51  and  53 . The threaded bores  85  located in lower plate  43  can also be seen. Referring to  FIG. 8 , a similar view of the multiple abrasive structure support  21  is shown with the three snail lock adapters  61  and series of brush-type abrasive structures  67  removed, and with a set of three Frankfurt shoe supported abrasive members  111  in place. The abrasive members  111  include a base  113  which is locked into place with respect to the Frankfurt shoe first and second rails  51  and  53 . 
     Referring to  FIG. 9 , a perspective exploded view looking downward into a small dual plate resilient abrasive support  121  is shown. Many of the smaller components which were associated with the multiple abrasive structure support  21  are used in conjunction with the small dual plate resilient abrasive support  121 , and those components will retain the same numbering as was used in  FIGS. 1-8 . This points out a further advantage of having both the multiple abrasive structure support  21  and the small dual plate resilient abrasive support  121  available, namely a smaller supply of spare parts are needed because of the shared component parts. The main difference between the large (multiple) support  21  and the small support  121  is the smaller size dual plate sets that provide centered support for a single snail lock adapter  61  for mounting a single abrasive structure. 
     Continuing to Refer to  FIG. 9 , and beneath the ordinary tool holder  23 , a small resilient two plate support assembly includes a small top plate  123  mounted to a small bottom plate  125  using the same components earlier discussed. The small top plate  123  is seen as having a central thirty-five millimeter aperture  72  for interfitting with the thirty-five millimeter insertion or securing portion  25  of ordinary tool holder  23 . A series of openings  80  are seen in the a small top plate  123  and small bottom plate  125  for interfitting with pair of bar wrenches with pin projections to be shown later. 
     Small bottom plate  125  has a single, centrally located threaded bore  55  instead of multiple threaded bores  55 . A snail lock adapter  131  is provided and can be termed “low height” because it does not need extension step  77  and a general outwardly radial surface  99  having an axial height to enable a flat back  79  of the structure of the snail lock adapter  61  supporting the female snail lock opening  63  to clear Frankfurt shoe first and second rails  51  and  53  which were present underneath bottom plate  43  of multiple abrasive structure support  21  seen in  FIGS. 1-8 . 
     Snail lock adapters  131  can be used with bottom plate  43  of multiple abrasive structure support  21  seen in  FIGS. 1-8  if the Frankfurt shoe first and second rails  51  and  53  are not present. In general, the extra height of one or two centimeters present in snail lock adapter  61  can either be tolerated in the large (multiple) support  21  (even where the Frankfurt shoe first and second rails  51  and  53  are not present), or in the small support  121 . This is another instance were interchangeable parts between the between the large (multiple) support  21  and the small support  121  will enable the use of a single size set snail lock adapters  61  in both the supports  21  and  121  where the centimeter or two height addition is of no consequence. Conversely, the supports  21  and  121  can both utilize the snail lock adapters  131  where Frankfurt shoe first and second rails  51  and  53  of support  21  are not present. 
     The snail lock adapter  131  still has male thread  65 , which is preferably a two and a half inch-eight pitch UNC thread, a wide bore  66  as an axial access opening, flat back  79  of the structure of the snail lock adapter  61  supporting the female snail lock opening  63  having a radially outwardly exposed scalloped surface  101 . Snail lock adapter  131  merely lacks extension step  77  and a general outwardly radial surface  99  between the male thread  65  and the flat back  79 . Snail lock adapter  61  can also be used, thus contributing to more effective commonality among component parts for a user. 
     Referring to  FIG. 11 , a sectional view of the snail lock adapter  131  shown in  FIGS. 9 &amp; 10  is shown in cross section with the washers  95  in place and partially extending in a groove  141  formed between male thread  65  and flat back  79 . Axial access opening wide bore  66  and female snail lock opening  63  are also seen.  FIG. 11  emphasizes the relatively lower height of snail lock adapter  131  as compared to snail lock adapter  61 . 
     Referring to  FIG. 12 , a plan view of a wrench  151  which is utilizable with either the multiple abrasive structure support  21  or the small dual plate resilient abrasive support  121 , is illustrated. The wrench  151  may be made of one quarter inch thick flat bar stock base  153  having a width which can be inserted between spring assemblies  45  and has been found to work well where this is one inch. The wrench may have an overall length sufficient to provide torque manipulation and fourteen inches has been found to work well. Wrench  151  is a one sided wrench and includes a pair of projections including a first projection  155  near one end of bar stock base  153 , and a second projection  157  spaced apart from first projection  155  by a distance “S1” is provided to match the spacing of openings  80  located on supports  21  and  121  as needed. It has been found that a spacing “S1” between projections  155  and  157  of about 4.076 inches works well with openings  80  which have diameters slightly oversized with regard to the diameters of projections  155  and  157  which have a nominal four inch separation, and may be rounded at the top and may project about one half inch above the bar stock base  153 . A hole or aperture  159  may be provided at an end opposite projection  155  for attachment of the wrench  151  to other structures. 
     Referring to  FIG. 13 , a plan view of a wrench  161  which is utilizable predominantly with the snail lock adapters  61  and  131 , but may be used with any openings  80  located on any component of either the multiple abrasive structure support  21  or the small dual plate resilient abrasive support  121 , is illustrated. The wrench  161  may be made of one quarter inch thick flat bar stock base  163  having a width which can enable insertion where needed and may preferably be a two sided wrench. A width that has been found to work well is one inch. The wrench may have an overall length sufficient to provide torque manipulation and fourteen inches has been found to work well. 
     Wrench  161  may have multiple projections which facilitate manipulation of a number of sizes of components, including different sizes of snail lock adapters  61  and  131  which currently commonly include sizes of four and five inch diameters with the five inch diameter snail lock having the ability to accommodate both five and six inch abrasive structures. On wrench  161 , a plurality of projections including a first pin member  165  (which may be realized as a two-sided projection pin and thus may be a pin structure which projects from both sides of the wrench  161 , although the pins projections will be dealt with singly). On one side of wrench  161  and nearest one end of bar stock base  163 , a second projection  167  protrudes from wrench  161  and is spaced apart from first projection  165  by a distance “S2”. On the other side of wrench  161  and nearest the same end of bar stock base  163 , a third projection  168  protrudes from wrench  161  and is spaced apart from a fourth projection  169  on that side by a distance “S3”. The pin distances “S2” and “S3” are provided to match the spacing of openings  80  located on snail lock adapters  61  and  131  of different sizes and perhaps other structure on supports  21  and  121  as may be provided. It has been found that a spacing “S2” of about 3.436 and “S3” of about 4.436 inches works well for sizes of snail lock adapters  61  and  131 . A hole or aperture  159  may be provided at an end opposite dual pin projection  165  for attachment of the wrench  161  to other structures. 
     The inventive system shown in  FIGS. 1-13  disclose a structure which allows owners of standard CNC machinery to inexpensively and effectively perform texturing and finishing of stone and other materials. A manual grinder using the much smaller and less reliable ⅝″-11 pitch or M-16X2 connector system stands in contrast to the strength, interchangeability and reliability of the inventive system of  FIGS. 1-13 . A manual grinder will be illustrated to facilitate this comparison. 
     Referring to  FIG. 14 , a perspective partially exploded view of a manual grinder system  201 , electrically or pneumatically powered, having a housing  203  and handle  205  and operatively drives a shaft  207  having a ⅝ inch-11 pitch or M-16X2 terminal end connector system in contrast to the strength, interchangeability and reliability of the inventive system of  FIGS. 1-13 . The threaded end of shaft  207  connects into a threaded bore  209  of a manual snail lock support  211 . The manual snail lock support  211  may include a boss  213  having opposed flat sides  215  to facilitate turning the manual snail lock support  211  to disengage it from the shaft  207 . A curved bowl structure  217  supports the female snail lock  219  on the underside indicated with a curved pointing arrow. Other structures are as previously described. Even with manual control of the housing  203  and handle  205 , the pressure which can be brought to bear on the manual snail lock support  211  through the shaft  207  is only a fraction of the forces possible with a general CNC machine and any such manual system lacks the consistent controllability available from CNC machines. As such, the inventive structures shown in  FIGS. 1-13  are seen to have the ability to handle significantly more force and provide much more consistent control in a much more stable way than the manual grinder system  201 . Further, the Snail lock adapter  61 ,  131  can be placed on any type of structure, especially any type of structure utilizable with a CNC machine. Referring to  FIG. 15 , the underside of the manual snail lock support  211  is shown. 
     While the present invention has been described in terms of a system for multiple or single abrasive structure support, using components common to each, and to a snail lock adapter which operates in the presence of and without the need to remove a set of Frankfurt shoe rails, the structures techniques employed herein are applicable to a wide range of devices and methods. 
     Although the invention has been derived with reference to particular illustrative embodiments thereof, many changes and modifications of the invention may become apparent to those skilled in the art without departing from the spirit and scope of the invention. Therefore, included within the patent warranted hereon are all such changes and modifications as may reasonably and properly be included within the scope of this contribution to the art.