JPS5898132U - Workpiece holding device - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案装置の実施例を示す縦断面図、第２図は
第１図の■−■線矢視拡大断面図、第３図は工作物のア
ンクランプ状態を示す第２図と同様な断面図、第４図は
従来装置の実施例を示す主要部断面図である。 図中、符号１は主軸台、３は主軸、５はチャック本体、
５ａはテーパ面、１９は固定スリーブ、６は基準金、８
は操作ロッド、９はクランプ爪、９ａは先端係合部、２
４はスプリング、２１は可動スリーブ、′２５はコレッ
ト、２７はクランプ爪ガイド、２７ａはテーパカム溝で
ある。Fig. 1 is a longitudinal sectional view showing an embodiment of the device of the present invention, Fig. 2 is an enlarged sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is Fig. 2 showing the unclamped state of the workpiece. A similar cross-sectional view, FIG. 4, is a cross-sectional view of main parts showing an embodiment of the conventional device. In the figure, 1 is the headstock, 3 is the main shaft, 5 is the chuck body,
5a is a tapered surface, 19 is a fixed sleeve, 6 is a reference gold, 8
9 is an operating rod, 9 is a clamp claw, 9a is a tip engaging portion, 2
4 is a spring, 21 is a movable sleeve, 25 is a collet, 27 is a clamp claw guide, and 27a is a tapered cam groove.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 主軸台に回転自在に軸承した主軸の先端に固定されたチ
ャック本体と、該チャック本体の軸心部に固定された固
定スリーブと、前記チャック本体の外周に固定され工作
物の位置決め用端面を有する基準金と、前記固定スリー
ブ内を往復駆動装置により往復動可能な操作ロッドと、
該操作ロッドにフローチング部材により枢着され先端係
合部が工作物の端面に係合して基準金に圧着する位置決
め保持作用なす一対のクランプ爪と、前記固定スリーブ
の先端部に固定され内周面にテーパカム溝を形成し前記
クランプ爪の先端外面との接触カム作用により該クラン
プ爪に工作物の位置決め保持作用を与えるクランプ爪ガ
イドとから成る工作物保持装置。It has a chuck body fixed to the tip of a spindle rotatably supported on a headstock, a fixing sleeve fixed to the axial center of the chuck body, and an end face fixed to the outer periphery of the chuck body for positioning the workpiece. a reference gold; an operating rod capable of reciprocating within the fixed sleeve by a reciprocating drive device;
A pair of clamp claws are pivotally connected to the operating rod by a floating member and have a positioning and holding function in which the tip engaging portion engages the end surface of the workpiece and presses it against the reference metal, and a pair of clamp claws are fixed to the tip of the fixed sleeve and have an inner A workpiece holding device comprising a clamp pawl guide that has a tapered cam groove formed on its peripheral surface and provides a workpiece positioning and holding action to the clamp pawl by contact cam action with the outer surface of the tip of the clamp pawl.