Workpiece support device and rotary indexer

Abstract

The invention discloses a workpiece support device, which aims at providing a workpiece support device for enhancing the processing precision of a workpiece one end of which is connected with the rotating shaft of a rotation driving device. A workpiece support device (70) includes a coupling member (3) that couples a second end of a workpiece (W); a support shaft (2), the coupling member (3) provided at a first end of the support shaft (2); a frame (1) that supports the support shaft (2) axially movably and rotatably; a force generating device (5) that applies a force in an axial direction tothe support shaft (2); and an axial clamping device (6) including a single pressing member (6a1) extending along the entire periphery of the support shaft (2) or a plurality of pressing members (6a1)equally arranged in a circumferential direction of the support shaft (2), the pressing member (6a1) generating a force in a radial direction while the force generating device (5) is activated, the axial clamping device (6) fixing the support shaft (2) to the frame (1) in the axial direction by the force.

Description

technical field [0001] The present invention relates to a support device for supporting a workpiece whose one end is connected to a rotary shaft of a rotary drive device and the other end of the workpiece. Furthermore, it is related with the rotary indexing machine provided with the support device of a workpiece, the index device as a rotation drive device provided opposite to this support device, and a control device. Background technique [0002] As the rotary drive device arranged to face the workpiece support device, there is an index device mounted on a machine tool or a spindle head of a machine tool such as a lathe. Furthermore, as an index device provided to face a workpiece support device, there are index devices mounted on machine tools, or spindle heads of machine tools such as a compound lathe having an indexing function. [0003] As a supporting device for the workpiece, there is a tailstock disposed opposite to a lathe headstock that holds one end surface of t...

AI Technical Summary

Problems solved by technology

[0004] But the disadvantage is that the rotation axis of the headstock, the tailstock shaft, and the tailstock sleeve eliminate the allowance in the axial direction through the pressed workpiece, but the allowance in the radial direction between the frame and the tailstock sleeve is not eliminated.

Furthermore, the tail center and the other end of the workpiece, the tail center restricts the relative displacement in the axial direction by the pressing force applied to the center hole, and the relative displacement in the radial direction is not sufficiently restricted.

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