Eccentric boring tool and method
AssigneeC. L. Frost & Son, Inc.
InventorSiegfried K. Weis
Life of this patent
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Abstract
An eccentric boring tool and method of forming a bore off center from the central axis of a workpiece are disclosed. The tool includes a tool holder nonrotatably supported relative to a workpiece and an outer housing supported for rotation with the workpiece and rotation relative to the tool holder. An eccentric supported within the housing mounts a bearing which in turn supports the tool holder. The eccentric rotates with the housing causing the longitudinal axis of the tool holder to orbit about the longitudinal axis of the workpiece. An end mill cutting tool is supported in the tool holder. A plurality of discs are supported in the forward end of the housing. The discs engage the workpiece, lock the housing to the workpiece and cause the housing to rotate at the same speed as the workpiece.
Claims15
An eccentric cutting tool for machining an annular surface having an axis off center from the central axis of a workpiece, said tool adapted for use in an automatic screw machine and comprising:
- an outer housing having an open forward end dimensioned to receive the workpiece;
- a tool holder supported within said housing;
- means engaging said housing for rotatably supporting said housing with respect to said tool holder;
- means operatively connected to said housing for causing said housing to rotate with the workpiece;
- means rotatable with said housing and supporting said tool holder for causing the longitudinal axis of said tool holder to be positioned eccentrically of the workpiece central axis, concentric with an axis of the annular surface to be machined and for causing the tool holder to orbit about the longitudinal axis of said outer housing without rotation of the tool holder about its longitudinal axis;
- and
- a cutting tool supported by and coaxially aligned with said tool holder whereby upon rotation of the outer housing the tool will orbit about the central axis of the workpiece and machine an annular surface in the workpiece upon relative axial movement of the workpiece and outer housing.
An eccentric cutting tool for machining an annular surface off center from the center axis of a workpiece, said tool adapted for use in an automatic screw machine and comprising:
- an outer housing having an open forward end dimensioned to receive the workpiece;
- a tool holder supported within said housing;
- means engaging said housing for rotatably supporting said housing with respect to said tool holder;
- means rotatable with said housing and supporting said housing with respect to said tool holder;
- means rotatable with said housing and supporting said tool holder for causing the longitudinal axis of said tool holder to orbit about the longitudinal axis of said outer housing;
- a cutting tool supported by and coaxially aligned with said tool holder whereby upon rotation of the outer housing the tool will orbit about the central axis of the workpiece and machine an annular surface in the workpiece upon relative axial movment of the workpiece and outer housing;
- and
- locking means at the forward end of said housing for locking said housing to the workpiece whereby rotation of the workpiece causes rotation of said housing.
An eccentric cutting tool for machining an annular surface off center from the central axis of a workpiece, said tool adapted for use in an automatic screw machine and comprising:
- an outer housing having an open forward end dimensioned to receive the workpiece;
- a tool holder supported within said housing;
- means engaging said housing for rotatably supporting said housing with respect to said tool holder;
- means rotatable with said housing and supporting said tool holder for causing the longitudinal axis of said tool holder to orbit about the longitudinal axis of said outer housing;
- a cutting tool supported by and coaxially aligned with said tool holder whereby upon rotation of the outer housing the tool will orbit about the central axis of the workpiece and machine an annular surface in the workpiece upon relative axial movement of the workpiece and outer housing;
- and
- locking means at the forward end of said housing for locking said housing to the workpiece whereby rotation of the workpiece causes rotation of said housing.
A device for holding a cutting tool and causing said cutting tool to orbit about the longitudinal axis of a rotating workpiece to thereby form a surface eccentric to the axis of the workpiece, said device comprising:
- an elongated member including means for nonrotatably supporting said member within an automatic screw machine tool holder;
- an elongated cutting tool holder including a shank and a socket configured to nonrotatably hold a cutting tool;
- means engaging said shank for nonrotatably supporting said shank within said elongated member;
- a housing having an open forward end;
- bearing means for rotatably mounting the outer housing on said elongated member;
- and
- eccentric means carried by said housing and supporting said socket for causing the longitudinal axis of the socket to orbit around the longitudinal axis of the housing without the socket rotating about its longitudinal axis when said housing is rotated.
A device for holding a cutting tool and causing said cutting tool to orbit about the longitudinal axis of a rotating workpiece to thereby form a surface eccentric to the axis of the workpiece, said device comprising:
- an elongated member adapted to be nonrotatably supported within an automatic screw machine tool holder;
- an elongated cutting tool holder including a shank nonrotatably supported by said elongated member and a socket adapted to nonrotatably hold a cutting tool;
- a housing having an open forward end;
- bearing means for rotatably mounting the outer housing on said elongated member;
- eccentric means carried by said housing and supporting said socket so that when said housing rotates, the longitudinal axis of the socket orbits around the longitudinal axis of the housing;
- and
- locking means carried by said housing at the forward end thereof for locking said housing to said workpiece and permitting relative axial movement of said housing relative to said workpiece.
Dependencies are inferred from the claim text.