Chuck structure
AssigneeNtn Corporation
InventorsMasayuki Yamamoto, Tsuyoshi Yagi
Life of this patent
Estimating the term…
Abstract
Provided is a chuck structure, which is configured to chuck an annular workpiece from a radially outer side of the workpiece. The chuck structure includes: leaf spring members arranged at a predetermined pitch along a circumferential direction of the chuck structure so as to be symmetrical with respect to a mechanism center axis; chuck claw members mounted to distal ends of the leaf spring members, respectively; and a pressing force applying mechanism configured to apply a force of pressing the leaf spring members radially inward, to thereby elastically press the chuck claw members onto a radially outer surface of the workpiece.
Claims7
A chuck structure, which is configured to chuck an annular workpiece from a radially outer side of the workpiece, the chuck structure comprising:
- leaf spring members arranged at a predetermined pitch along a circumferential direction of the chuck structure so as to be symmetrical with respect to a mechanism center axis;
- chuck claw members mounted to distal ends of the leaf spring members, respectively;
- and
- a pressing force applying mechanism configured to apply a force of pressing the leaf spring members radially inward, to thereby elastically press the chuck claw members onto a radially outer surface of the workpiece,
- wherein each of the leaf spring members is arranged in an oblique posture so that a distal end side of each of the leaf spring members is directed radially outward,
- wherein the pressing force applying mechanism comprises a pressing member to be brought into contact with a radially outer side of each of the leaf spring members, and
- wherein the chuck claw members are tightened and loosened by up-and-down movement of the pressing member.
A chuck structure, which is configured to chuck an annular workpiece from a radially inner side of the workpiece, the chuck structure comprising:
- leaf spring members arranged at a predetermined pitch along a circumferential direction of the chuck structure so as to be symmetrical with respect to a mechanism center axis;
- chuck claw members mounted to distal ends of the leaf spring members, respectively;
- and
- a pressing force applying mechanism configured to apply a force of pressing the leaf spring members radially outward, to thereby elastically press the chuck claw members onto a radially inner surface of the workpiece,
- wherein each of the leaf spring members is arranged in an oblique posture so that a distal end side of each of the leaf spring members is directed radially inward,
- wherein the pressing force applying mechanism comprises a pressing member to be brought into contact with a radially inner side of each of the leaf spring members, and
- wherein the chuck claw members are tightened and loosened by up-and-down movement of the pressing member.
Dependencies are inferred from the claim text.