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US 5,788,225 AGranted
Base and fixture to be used in machining operation
AssigneeKabushiki Kaisha Imao Corporation
InventorsKazuhide Iwata, Toshiya Sato
Life of this patent
Estimating the term…
Abstract
A machining device has a base and a fixture. The base is fixedly attached to a pallet or a machining table. The fixture is mounted on the base, contacting the base only at projecting contact surfaces which project above the mounting surface of the base. Cleaning of the base before a fixture is attached is done efficiently because only the minimized projecting contact surfaces area between the base and the fixture needs to be cleaned to permit stable contact between the base and fixture. The base and fixture also include projections and holes for precisely aligning the base and fixture with respect to each other.
Claims14
A base, having a mount surface, for fixedly attaching a fixture for holding a workpiece onto said mount surface, comprising:
- at least first and second plate members projecting from said mount surface;
- at least first and second contact surfaces on an upper side of said first and second plate members parallel to said mounting surface;
- a tapered projection on said mounting surface within a perimeter of said first contact surface, said tapered projection having a tapered outer surface narrowing toward a projection free end;
- said fixture having a bottom surface;
- at least third and fourth plate members projecting from said bottom surface;
- at least third and fourth contact surfaces on a lower surface of said third and fourth plate members being parallel to said bottom surface;
- said first and second contact surfaces alignable with said third and fourth contact surfaces, respectively;
- a tapered pit on said bottom surface within an area of said third contact surface for receiving said tapered projection, said tapered pit having a tapered inner surface narrowing toward a pit inside end;
- each of said second contact surface and said fourth contact surface including a hole;
- said hole being shaped to receive a fastener which holds said second contact surface fixedly against said fourth contact surface, respectively;
- and
- said tapered outer surface of said tapered projection and said tapered inner surface of said tapered pit abuttingly engaging each other when said second contact surface is held fixedly against said fourth contact surface, whereby transverse movement between said fixture and said base is prevented.
9 more elements
A fixture for holding a workpiece, fixedly mountable on a base, comprising:
- said fixture having a bottom surface;
- at least first and second plate members positioned on a mount surface of said base to contact at least third and fourth plate members on said bottom surface, respectively;
- at least first and second contact surfaces on an upper side of said first and second plate members parallel to said mounting surface;
- a tapered projection on said mounting surface within a perimeter of said first contact surface, said tapered projection having a tapered outer surface narrowing toward a projection free end;
- at least third and fourth contact surfaces on a lower surface of said third and fourth plate members being parallel to said bottom surface;
- said first and second contact surfaces alignable with said third and fourth contact surfaces, respectively;
- a tapered pit on said bottom surface within an area of said third contact surface for receiving said tapered projection, said tapered pit having a tapered inner surface narrowing toward a pit inside end;
- each of said second contact surface and said fourth contact surface including a hole;
- said hole being shaped to receive a fastener which holds said second contact surface fixedly against said fourth contact surface, respectively;
- said tapered outer surface of said tapered projection and said tapered inner surface of said tapered pit abuttingly engaging each other when said second contact surface is held fixedly against said fourth contact surface, whereby transverse movement between said fixture and said base is prevented.
7 more elements
A machining device comprising:
- a base having a mounting surface;
- at least first and second plate members projecting from said mounting surface;
- at least first and second contact surfaces on an upper side of said first and second plate members parallel to said mounting surface;
- a tapered projection on said mounting surface within a perimeter of said first contact surface, said tapered projection having a tapered outer surface narrowing toward a projection free end;
- a fixture for holding a workpiece, said fixture having a bottom surface;
- at least third and fourth plate members projecting from said bottom surface;
- at least third and fourth contact surfaces on a lower surface of said third and fourth plate members being parallel to said bottom surface;
- said first and second contact surfaces alignable with said third and fourth contact surfaces, respectively;
- a tapered pit on said bottom surface within an area of said third contact surface for receiving said tapered projection, said tapered pit having a tapered inner surface narrowing toward a pit inside end;
- each of said second contact surface and said fourth contact surface including a hole;
- said hole being shaped to receive a fastener which holds said second contact surface fixedly against said fourth contact surface, respectively;
- said tapered outer surface of said tapered projection and said tapered inner surface of said tapered pit abuttingly engaging each other when said second contact surface is held fixedly against said fourth contact surface, whereby transverse movement between said fixture and said base is prevented.
9 more elements
Dependencies are inferred from the claim text.