JPH0285508U

JPH0285508U -

Info

Publication number: JPH0285508U
Application number: JP16665388U
Authority: JP
Priority date: 1988-12-23
Filing date: 1988-12-23
Publication date: 1990-07-05

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す断面側面図、第
２図はその−による部分拡大断面図、第３図
は従来例を示す断面側面図、第４図はその−
拡大断面図である。１５：主軸、１６：回転体、１８：ホルダ、１
８ａ：嵌合孔、２０：支持軸、２０ａ：右端部、
２１：スプライン歯、２２：スリツト、２３：可
動片、２４：スプライン歯、２５：作動ロツド、
３０：駆動機構、３１：軸受、３２：駆動ロツド
、３３：フランジ、３２ａ：カム溝、３４：軸部
、３４ａ：係合孔、３５：カムピン、３６，３７
：規制ピン、３６ａ，３７ａ：ロツクボルト、３
８：ストツパ座、４０：ワークストツパ、４１：
押えリング、４２：Ｏリング、４３：ワークガイ
ド、５０：ワーク、５１：スプライン歯。 Fig. 1 is a sectional side view showing an embodiment of the present invention, Fig. 2 is a partially enlarged sectional view at -, Fig. 3 is a sectional side view showing a conventional example, and Fig. 4 is an enlarged sectional view at -.
It is an enlarged sectional view. 15: Main shaft, 16: Rotating body, 18: Holder, 1
8a: Fitting hole, 20: Support shaft, 20a: Right end,
21: Spline tooth, 22: Slit, 23: Movable piece, 24: Spline tooth, 25: Actuation rod,
30: Drive mechanism, 31: Bearing, 32: Drive rod, 33: Flange, 32a: Cam groove, 34: Shaft, 34a: Engagement hole, 35: Cam pin, 36, 37
: Regulation pin, 36a, 37a: Lock bolt, 3
8: Stoptupa, 40: Work Stoppa, 41:
Holder ring, 42: O-ring, 43: Work guide, 50: Work, 51: Spline tooth.

Claims

[Claims for Utility Model Registration] 1. A cylindrical support shaft having spline teeth formed on its outer peripheral surface is coaxially connected to the main shaft, and is a part of the support shaft in the axial direction where the spline teeth are located and A slit is formed in a part of the direction, and a movable piece is fitted into this slit, and the movable piece is fitted so as to be slightly rotatable about the axis of the support shaft, and the outer surface of the movable piece is forming spline teeth having the same diameter and substantially the same tooth shape as the pitch circle of the spline teeth;
A chuck device for a workpiece having a spline hole, characterized in that a drive mechanism is provided for rotating the movable piece in the circumferential direction with respect to a support shaft. 2. The drive mechanism inserts an actuation rod into the axial center of the support shaft, connects one end of the actuation rod to the movable piece, and rotates and axially moves the drive rod to the axial center of the holder attached to the main shaft. The holder is connected to the other end of the actuating rod so as to be movable in the axial direction and not relatively rotatable. 2. A chuck device for a workpiece having a spline hole as set forth in item 1, wherein a cam groove is formed extending in the circumferential direction, and a cam pin that slidably engages with the cam groove is fixed to the other side.