Abstract:
A Drill Press Circular Pattern tool comprises a Table Mount which is attached to the drill press table; a Left Alignment Plate and a Right Alignment Plate; a Slide Plate with Centering Pin; a Lock Down Bolt; mounted on top of the Slide Plate is the Rotation Plate with a Degree Gear. A Router Circle Cutter tool comprises an Alignment Plate with an Alignment Pin and a Slide Plate with one or two Centering Pins; the Slide Plate with measuring surface is mechanically coupled to the Alignment Plate with two Slide Plate Brackets; the Alignment Plate is mechanically coupled to the Router Table with Alignment Plate Mounting Bolts/Nut Knobs; the Slide Plate with Centering Pin(s) attached slides on the Router Table top while attached to the Alignment Plate with the two Slide Plate Brackets.

Description:
FIELD OF THE INVENTION 
     This invention relates to machine tools. 
     BRIEF SUMMARY OF THE INVENTIONS 
     A Drill Press Circular Pattern tool comprises of a Table Mount  210  which is attached to the drill press table; a second alignment plate  206  and a first alignment plate  207  mechanically coupled to the Table Mount; the second alignment plate  206  with measuring surface is mechanically coupled to two radius fixing-pins  201   a ; the first alignment plate  207  is mechanically coupled to the Table Mount  210 ; a Slide Plate  208  with work piece-receiving pin  203  attached slides between the second alignment plate  206  and the first alignment plate  207 ; a Lock Down bolt/nut  205  fits perpendicular through a slot in the Slide Plate  208  and a hole in the Table Mount  210  and mechanically couples the Slide Plate  208  to the Table Mount  210 ; mounted on top of the Slide Plate  208  is the Rotation Plate  209  with a Degree Gear  204  inserted within and at least one angle-fixing pin  201   b ; an operator can lower a work piece down onto the work piece-receiving pin  203  using a pre-drilled hole in the work piece; then turn on the drill press to drill holes in precise and repeatable arcs and circular patterns in increments of degrees. 
     A Router Circle Cutter tool comprises of an Alignment Plate  107  with an radius-setting pin  101  and a Slide Plate  108  with one or two work piece-receiving pins  103 ; the Slide Plate  108  with measuring surface is mechanically coupled to the Alignment Plate  107  with two Slide Plate Brackets  105 ; the Alignment Plate  107  is mechanically coupled to the Router Table top  116  with Alignment Plate Mounting Bolts/Nut Knobs  110 ; the Slide Plate  108  with work piece-receiving pins  103  attached slides on the Router Table top  116  while attached to the Alignment Plate  107  with the two Slide Plate Brackets  105 ; a Slide Plate  108  stationary rod  106   a  fits perpendicular through a slot in the Slide Plate  108  and a hole in the Router Table top  116  or the hole in the stationary rod receiving bracket  104  that attaches to the edge of the Router Table top  116 , and mechanically couples the Slide Plate  108  to the Router Table top  116 ; an operator can turn on a router, which is attached to the Router Table top  116  and lower a work piece down onto the work piece-receiving pins  103  using a pre-drilled hole in the work piece to route grooves in precise and repeatable arcs and circular patterns. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Having thus described the inventions in general terms, reference will now be made to the accompanying set of drawings, which are not necessarily drawn to scale, and wherein: 
         FIG. 1  illustrates an example diagram of a router circle cutting tool. 
         FIG. 2  illustrates an example diagram of a drill press circular pattern tool. 
         FIG. 3  illustrates a perspective view of an example radius-setting pin, radius-fixing pin, or angle-fixing pin. 
         FIG. 4  illustrates a side view of an example radius-setting pin, radius-fixing pin, or angle-fixing pin. 
         FIGS. 5A to 5C  illustrate example top views of an example radius-setting pin, radius-fixing pin, or angle-fixing pin. 
         FIGS. 6A and 6B  illustrate example perspective views of an example alignment pin cover. 
         FIGS. 7A and 7B  illustrate example front views of an example alignment pin cover. 
         FIGS. 8A and 8B  illustrate example side views of an example alignment pin cover. 
         FIGS. 9A and 9B  illustrate example top views of an example alignment pin cover. 
         FIG. 10  illustrates a perspective view of an example work piece receiving pin. 
         FIG. 11  illustrates a side view of an example work piece receiving pin. 
         FIG. 12  illustrates a top view of an example work piece receiving pin. 
         FIG. 13  illustrates a perspective view of an example stationary rod-receiving bracket. 
         FIG. 14  illustrates a front view of an example stationary rod-receiving bracket. 
         FIG. 15  illustrates a side view of an example stationary rod-receiving bracket. 
         FIG. 16  illustrates a top view of an example stationary rod-receiving bracket. 
         FIG. 17  illustrates a perspective view of an example plate attachment bracket. 
         FIG. 18  illustrates a side view of an example plate attachment bracket. 
         FIG. 19  illustrates a top view of an example plate attachment bracket. 
         FIG. 20  illustrates a perspective view of an example slide plate bracket. 
         FIG. 21  illustrates a side view of an example slide plate bracket. 
         FIG. 22  illustrates a top view of an example slide plate bracket. 
         FIG. 23  illustrates a side view of an example alignment plate. 
         FIG. 24  illustrates a side view of an example alignment plate. 
         FIG. 25  illustrates a top view of an example alignment plate. 
         FIG. 26  illustrates an example slide plate. 
         FIG. 27  illustrates a perspective view of an example degree gear. 
         FIG. 28  illustrates a side view of an example degree gear. 
         FIG. 29  illustrates a top view of an example degree gear. 
         FIG. 30  illustrates a side view of an example rotation plate. 
         FIG. 31  illustrates a top view of an example rotation plate. 
         FIG. 32  illustrates a front view of an example slide plate. 
         FIG. 33  illustrates a side view of an example slide plate. 
         FIG. 34  illustrates a top view of an example slide plate. 
         FIG. 35  illustrates a perspective view of an example second alignment plate. 
         FIG. 36  illustrates a side view of an example second alignment plate. 
         FIG. 37  illustrates a bottom view of an example second alignment plate. 
         FIG. 38  illustrates a top view of an example second alignment plate. 
         FIG. 39  illustrates a perspective view of an example first alignment plate. 
         FIG. 40  illustrates a side view of an example first alignment plate. 
         FIG. 41  illustrates a top view of an example first alignment plate. 
         FIG. 42  illustrates a perspective view of an example table mount. 
         FIG. 43  illustrates a side view of an example table mount. 
         FIG. 44  illustrates a top view of an example table mount. 
         FIG. 45  illustrates bottom perspective views of example extension plates. 
         FIGS. 46A and 46C  illustrate side views of example extension plates. 
         FIG. 47  illustrates a top view of an example extension plate. 
         FIGS. 48 and 49  illustrate example bottom views of an example extension plates. 
         FIG. 50  illustrates a perspective view of an example tool centering guide. 
         FIG. 51  illustrates a side view of an example tool centering guide. 
         FIG. 52  illustrates a top view of an example tool centering guide. 
         FIG. 53  illustrates an example degree scale. 
         FIG. 54  illustrates an example holding cross. 
         FIG. 55  illustrates a perspective view of an example drill press circular pattern tool. 
         FIG. 56  illustrates a perspective view of an example router circle cutting tool. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Presently, without expensive computerized machinery, an operator cannot cut arcs or circles into the face of a work piece or drill holes into a work piece in an arc or circular pattern in increments of degrees. Two inventions are presented to solve these problems. In the first invention a router circle cutter is explained. This device can be used to cut arcs and circles into face of a work piece such as wood and plastic with precision. This invention is used in conjunction with a routing table and router. 
     In the second invention a drill press tool is explained. This device can be used to easily drill holes in a precise small or large circular pattern in increments of degrees of arc in the work piece, such as wood, plastic or metal, also operator can recall precise drilling positions using a drill press. 
     Turning to the Router Circle Cutter tool  100 , to assemble the device, an operator starts with a traditional router, which comprises a routing table  116  as is well known in the art. Referring to  FIG. 1 , once the Alignment Plate  107  is securely attached to the Router Table  116 , the Slide Plate  108  can slide side to side on the Router Table  116 . The Slide Plate  108  has a routing slot  120 , which allows the router bit to protrude up through the Slide Plate  108 . The work piece is lowered onto the work piece-receiving pin  103  using a pre-drilled hole in the work piece. The work piece can then be rotated around the work piece-receiving pin  103  to precisely route groves in an arc or circular pattern from 0 to 360 degrees. The Slide Plate  108  can be moved side to side in very small increments from the center of the Router Bit and can be locked into position by the radius-setting pin  101 . 
     To use this tool, referring to  FIG. 1 , operator securely attaches the Alignment Plate  107  by using the Alignment Plate Table Mounting Brackets  109  or by using machine bolts, washers and nuts. Once the Alignment Plate  107  is attached to a Router Table  116 , the user now positions the Slide Plate  108  and the Slide Plate Brackets  105  into the groove of the Alignment Plate  107 . This allows the Slide Plate  108  to slide side to side over the router bit. Operator now lowers the work piece to be routed down onto the work piece-receiving pin  103  using a pre-drilled hole in the work piece. Operator will guide the Slide Plate  108  into the desired position by lining up the notch on the Alignment Plate  107  with the measurement scale printed on the Slide Plate  108  to locate the correct measurement and then use the radius-setting pin  101  to lock in desired position of the Slide Plate  108 . The stationary rod nut  106   b  is now used to lock down the Slide Plate  108  to Router Table  116 . An operator will then turn on the router attached to the Router Table  116  and lower the work piece down onto the work piece-receiving pin  103  using a pre-drilled hole in the work piece. At this point, the operator is ready to plunge and rotate the work piece on the router bit from 0-360 degrees in order to 
     In some embodiments the following items can be added to improve accuracy, speed, and allow for new capabilities and increase system performance or efficiency: Centering Pin Bushings ( 15 ), a stationary rod-receiving bracket  104  for the Router Table  116  top, and a Holding Cross ( 12 ). The Centering Pin Bushings ( 15 ) provide smoother operation during rotation and/or plunging. Centering Pin Bushings ( 15 ) also allow re-use on center point on pre-drilled holes in work pieces so center point can be recalled after a bigger hole has been drilled. Stationary rod-receiving bracket  104  allows the fully assembled circle cutter to be used on a wider range of router tables based different sizes. The Holding Cross ( 12 ) holds a single piece of a work piece in order to allow operator to create a core and shell by cutting completely through the work piece. 
     Turning to the second invention, the Drill Press Circular Pattern tool  200 , to assemble device, an operator starts with a traditional drill press as is well known in the art. Referring to  FIG. 2 , once the second alignment plate  206  and first alignment plate  207  are securely attached to the Table Mount  210 , the Slide Plate  208  can slide back and forth on the Table Mount  210  between the second alignment plate  206  and first alignment plate  207 . The Slide Plate  208  and Rotation Plate  209  have a slot, which allows the drill bit to protrude down through the Slide Plate  208  and the Rotation Plate  209  as well as Table Mount  210 . The work piece is lowered onto the work piece-receiving pin  203  using a pre-drilled hole in the work piece. The work piece can then be rotated around the work piece-receiving pin  203  to precisely drill holes in circular patterns from 0 to 360 degrees. Rotation Plate  209  and Slide Plate  208  can be moved back and forth in very small increments from the center of the drill bit and can be locked into position by the radius-fixing pin(s)  201   a . The work piece can be rotated on the Rotation Plate  209  from 0-360 degrees and locked into position using the angle-fixing pin  201   b  of the Rotation Plate  209 . 
     To use the tool, referring to  FIG. 2 , an operator securely mounts the Table Mount  210  using Mounting Bolts, Washers, and Nuts  211  to the drill press table. Once the second alignment plate  206  and first alignment plate  207  are attached to the Table Mount  210 , the operator now positions the Slide Plate  208  between the second alignment plate  206  and first alignment plate  207 . This allows the Slide Plate  208  to slide back and forth under the drill bit. Operator now lowers the work piece to be drilled down onto the work piece-receiving pin  203  using a pre-drilled hole in the work piece. Operator will guide the Slide Plate  208  into the desired position using scale printed on the second alignment plate  206  to locate the correct measurement and then use the radius-fixing pin  201   a  to lock in desired position of the Slide Plate  208 . The Lock Down bolt/nut  205  is now used to lock down the Slide Plate  208  to Table Mount  210 . At this point the operator is ready to drill then rotate the work piece and drill again from 0-360 degrees in order to drill holes in arcs or circles patterns. 
     In other embodiments, instead of using a drill bit to cut the work piece while the work piece is being rotated around the work piece-receiving pin  203 , an operator can use an ink pen to draw circles on material with precision and recall ability. The drill press tool  200  simply allows rotating a work piece around a center point which is pre-drilled into the work piece while a protruding component marks or cuts the work piece. 
     In other embodiments, this invention can produce prototypes with precise arcs and circles cut into work pieces. Professional woodworkers may use this tool to create circular shapes or parts with precision such as a wheel. Artists may use this tool to create artwork with circular patterns. 
     Both tools use the same Centering Pin and center point concept. Both tools use Alignment Pin(s) to hold tool in precise and repeatable locations of 1/16th inch increments. This allows a work piece to be transferred from one machine tool to another and stay in perfect alignment. For example: Using a ¼ inch router bit, set at 2 inch radius on router circle cutter you can route a ¼ inch circular groove 4 inches in diameter on center in a work piece then transfer the work piece to drill press, use ¼ inch drill bit, set tool at 2 inch radius and drill holes in a circular pattern that precisely fits in 4 inch diameter grove cut by router. 
       FIG. 55  illustrates a perspective view of an example drill press circular pattern tool  200 . The drill press circular pattern tool  200  is mounted on a drill press table  5503  of a drill press  5506 . The drill press  5503  includes a drill bit  5509  that an operator of the drill press  5506  may use to drill a hole into a work piece that is placed on the drill press table  5503 . 
     The drill press circular pattern tool  200  is the tool assembled from the various parts illustrated in  FIG. 2 . The second alignment plate  206  and the first alignment plate  207  are fastened to the drill press table using the mounting bolts, nuts and washers  211 . The second alignment plate  206  and the first alignment plate  207  define an area for the slide plate  208  to slide linearly. The operator may slide the slide plate  208  towards or away from the drill bit  5509  depending on the radius of the arc that the operator wants to drill in the work piece. 
     The slide plate  208  is a thin plate that includes a work face  5512 . The work face  5512  is the side of the slide plate  208  that faces the operator. The side of the slide plate  208  that is opposite the work face  5512  contacts the drill press table  5503 . The work face  5512  defines a work plane that is parallel to the drill press table  5503 . On each side of the slide plate  208  are a first alignment plate-abutting face  5515  and a second alignment plate-abutting face  5518 . The first alignment plate-abutting face  5515  abuts the slide plate-abutting face  5521  of the first alignment plate  207 . As an operator slides the slide plate  208  back and forth, the first alignment plate-abutting face  5515  and the slide plate-abutting face  5521  rub against each other. The second alignment plate-abutting face  5518  is on a side opposite first alignment plate-abutting face  5515 . The second alignment plate-abutting face  5518  abuts the slide plate-abutting face  5524  of the second alignment plate  208 . As an operator slides the slide plate  208  back and forth, the second alignment plate-abutting face  5518  and the slide plate-abutting face  5524  rub against each other. 
     On top of the slide plate  208  is a rotation plate  209 . Like the slide plate  208 , the rotation plate  209  is a thin plate. The rotation plate  209  includes a work face  5527  that faces the operator and that is parallel to the work face  5512  and the work plane. The side of the rotation plate  209  that is opposite the work face  5512  is the slide plate-abutting face. The slide plate-abutting face abuts the work face  5512 . The rotation plate  209  slides with the slide plate  208  as the operator slides the slide plate  208 . 
     To lock the slide plate  208  into place in preparation for drilling holes, the operator engages the radius-fixing pin  201   a  with the second alignment plate-abutting face  5518 . The second alignment plate  206  includes a through hole  5530  through which the radius-fixing pin  201   a  slides. While the radius-fixing pin  201   a  is disengaged from the second alignment plate-abutting face  5518 , the slide plate  208  can slide linearly between the first alignment plate  207  and the second alignment plate  206 . For the radius-fixing pin  201   a  to engage the second alignment plate-abutting face  5518 , the second alignment plate-abutting face  5518  includes a toothed portion  5533 . The toothed portion  5533  includes ridges that are configured to receive the radius-fixing pin  201   a . Once radius-fixing pin  201   a  engages the toothed portion  5533 , the slide plate  208  is locked into place. At each end of the second alignment plate-abutting face  5518  is a non-toothed portion  5534  that is smooth and with which the radius-fixing pin  201   a  cannot engage. 
     The operator may use the drill press circular pattern tool  200  to drill, in a work piece, a series of equally spaced holes in the shape of an arc. The operator slides the slide plate  208  to align the radius guide  5536  on the second alignment plate  206  with the radius guide marker  5539  on the slide plate  208 . Once the radius guide marker  5539  is pointing to the desired radius on the radius guide  5536 , the operator slides the radius-fixing pin  201   a  into the toothed portion  5533  of the second alignment plate  206 . 
     The operator attaches a gear  204  to a work piece. The operator should fasten the gear  204  to a point on the work piece that is the center of the arc that the operator wants to drill into the work piece. The operator selects a gear  204  that corresponds to the desired degree spacing of the drill holes around the arc. For example, a gear  204  with twenty-four teeth is configured to assist the operator in drilling holes every fifteen degrees. A gear  204  with twenty teeth may assist in drilling holes every eighteen degrees. To attach the work piece and attached gear  204  to the drill press circular pattern tool  200 , the operator drills a hole into the center of the work piece. The size of the hole should be about the size of the work piece-receiving pin  203 . The operator lowers the work piece and attached gear  204  to be drilled down onto the work piece-receiving pin  203  using the drilled hole in the work piece. The work piece-receiving pin  203  is perpendicular to the work face  5527  of the rotation plate  209  and is located in the center of a circular pocket  5542  that is configured to receive the gear  204  so that the work piece rests flush against the work face  5527 . 
     With the gear  204  attached to the work piece at the center of the desired arc, the operator places the side of the work piece with the gear  204  so that the work piece-receiving pin  203  slides into the center of the hole in the gear  204 . Once the work piece is attached to the work piece-receiving pin  203 , the operator should be able to spin the work piece around with the work piece-receiving pin  203  being the center point of the rotation. Because the radius-fixing pin  201   a  is set to the desired radius, the location of the drill bit  5509  should trace a circle on the work piece as the operator spins the work piece. 
     The operator may use the angle-fixing pin  201   b  to stop the work piece at fixed angles. Similar to the toothed portion  5533  and the radius-fixing pin  201   a , the angle-fixing pin  201   b  engages with the spaces between the teeth of the gear  204 . The angle-fixing pin  201   b  is inserted into a through hole  5545  of the rotation plate  208 . The through hole  5545  extends from a side of the rotation plate to the edge of the circular pocket  5542 . With the gear  204  in the circular pocket  5542  and the gear  204  attached to the work piece, the operator can engage the angle-fixing pin  201   b  with the gear  204 , drill a hole, disengage the angle-fixing pin  201   b  from the gear  204 , rotate the approximate number of degrees the work piece about the work piece-receiving pin  203 , engage the angle-fixing pin  201   b  with the gear  204  to make the approximate number of degrees accurate based on the number of teeth of the gear  204 , and drill another hole. The operator may continue the drill and rotate sequence until the operator has drilled the desired number of holes. 
       FIG. 56  illustrates a perspective view of an example router circle cutting tool  100 . The router circle cutting tool  100  is mounted on a router table top  116  of a router table. The router table includes a router bit  5603  that an operator of the router table may use to route an arc into a work piece that is placed on the router table. 
     The router circle cutting tool  100  is the tool assembled from the various parts illustrated in  FIG. 1 . The alignment plate  107  is fastened to the router table top  116  using the alignment plate mounting bolts and nuts  110 . The slide plate  108  is slidably fastened to the router table top  116  using the stationary rod  106   a  attached to the stationary rod nut  106   b  through the slide slot  5606  of the slide plate  108 . The operator may slide the slide plate  108  linearly along the router table top  106  as restricted by the stationary rod  106   a  and the alignment plate  107 . As the operator slides the slide plate the position of the router bit  5603  within the routing slot  120  changes. 
     The slide plate  108  is a thin plate that includes a work face  5609 . The work face  5608  is the side of the slide plate  108  that faces the operator. The side of the slide plate  108  that is opposite the work face  5609  contacts the router table top  106 . The work face  5608  defines a work plane that is parallel to the router table top  106 . On one side of the slide plate  108  is an alignment plate-abutting face  5612 . The alignment plate-abutting face  5612  abuts the slide plate-abutting face  5615  of the alignment plate  107 . As an operator slides the slide plate  108 , the alignment plate-abutting face  5612  and the slide plate-abutting face  5612  rub against each other. 
     To lock the slide plate  108  into place in preparation for routing, the operator engages the radius-setting pin  101  with the alignment plate-abutting face  5612 . The alignment plate  107  includes a through hole  5618  through which the radius-setting pin  101  slides. While the radius-setting pin  101  is disengaged from the alignment plate abutting face  5612 , the slide plate  108  can slide linearly along a slide axis as guided by the alignment plate  107  and the stationary rod  106   a . For the radius-setting pin  101  to engage the alignment plate-abutting face  5612 , the alignment plate-abutting face  5612  includes a toothed portion  125  (see  FIG. 1 ). The toothed portion  125  includes ridges that are configured to receive the radius-setting pin  101 . Once the radius-setting pin  101  engages the toothed portion  125 , the slide plate  108  is locked into place. At each end of the alignment plate-abutting face  5612  is a non-toothed portion  130  (see  FIG. 1 ) that is smooth and with which the radius-setting pin  101  cannot engage. 
     The operator may use the router circle cutting tool  100  to route, in a work piece, a groove in the shape of an arc. The operator slides the slide plate  108  to align the radius guide  5621  on the slide plate  108  with the radius guide marker  5624  on the alignment plate  107 . Once the radius guide marker  5624  is pointing to the desired radius on the radius guide  5621 , the operator slides the radius-setting pin  101  into the toothed portion  125  of the slide plate  108 . 
     The operator drills a hole into the work piece at the center of the arc that the operator wants to cut with the router circle cutting tool  100 . The size of the hole should be about the size of the work piece-receiving pin  103 . The work piece-receiving pin  103  is perpendicular to the work face  5609  of the slide plate  108  and is located at and end of the routing slot  120 . The work piece rests flush against the work face  5609  when the work piece is placed on the work piece-receiving pin  103 . 
     With the work piece placed on the work piece-receiving pin  103 , the operator should be able to spin the work piece around with the work piece-receiving pin  103  being the center point of the rotation. Because the radius-setting pin  101  is set to the desired radius, the location of the router bit  5603  should trace a circle on the work piece as the operator spins the work piece. The operator turns on the router and the router bit  5603  routes an arc in the work piece as the operator spins the work piece about the work piece-receiving pin  103 . In some implementations, the operator turns on the router, places the work piece on the work piece-receiving pin  103 , and rotates the work piece about the work piece-receiving pin  103 .