Collet chuck apparatus
AssigneeJacobs Chuck Technology Corporation
InventorRoger J. Kanaan
Life of this patent
Estimating the term…
Abstract
The center of a collet having a plurality of individual gripper members resiliently spaced apart in an annular array and operated on by a frustoconical surface can be adjusted by displacing some of the gripper members more than others of the gripper members parallel to the axis with which both the annular array and the frustoconical surface are nominally concentric. This causes the frustoconical surface to produce greater radial displacement of some of the gripper members, thereby shifting the center of the collet transverse to the above-mentioned axis. An element transversely moveable relative to the axis causes displacement of some of the gripper members more than others.
Claims22
A collet chuck for use with a machine collet of the type having a plurlaity of rigid gripper members disposed in an annular array and circumferentially spaced from one another by resilient means, said chuck comprising:
- a body member having a frustoconical surface defined therein substantially concentric with said body member, said frustoconical surface for receiving a machine collet;
- means moveable relative to said body member for forcing a collet disposed within said body member against said frustoconical surface along a line substantially parallel to an axis concentric with said frustoconical surface, so that the gripper members of a collet disposed within said body are forced against said frustoconical surface thereby changing the circumferential spacing between the gripper members;
- and
- means transversely moveable relative to said axis for displacing at least one gripper member of a collet disposed within said body member along said frustoconical surface in a direction generally parallel to said centerline axis in order to shift the center of the collet in a direction transverse to said centerline axis.
A tool holding device for holding a collet and associated tool in precise axial alignment, said tool holding device comprising:
- a body member having a frustoconical surface substantially concentric with the centerline axis through said body member;
- a nut member threadedly engaged with said body member for forcing a collet within said body member against said frustoconical surface substantially parallel said axis so that said frustoconical surface uniformly compresses the collet along said frustoconical surface;
- and
- means for displacing a portion of a collet forced against said frustoconical surface in a direction generally parallel to said axis in order to shift the center of the collet in a direction transverse to said axis, wherein said means for displacing comprises an annular member substantially concentric with said axis and disposed so as to contact a collet in opposition to said frustoconical surface, an annular segment nominally concentric with said axis and interposed between said annular member and said nut member, and at least one set screw extending through said nut member transverse to said axis and acting on said annular segment, so that adjustment of said set screw disposes said annular segment eccentrically relative to said axis and causes said annular member to become inclined relative to a plane perpendicular to said axis.
Dependencies are inferred from the claim text.