JPS58121604U

JPS58121604U - Automatic centering device in chuck

Info

Publication number: JPS58121604U
Application number: JP1757982U
Authority: JP
Inventors: 姉川　和博
Original assignee: 光洋機械工業株式会社
Priority date: 1982-02-10
Filing date: 1982-02-10
Publication date: 1983-08-18

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

[Brief explanation of drawings]

第１図は実施例の縦断面図、第２図、第３図はそれぞれ
本締め、心出し仮締め状態を示す側面図、第４図、第５
図、第６図、第７図はそれぞれ第１図のＩＶ−ＩＶ線、
ｖ−ｖ線、ＶＩ−ＶＩ線、■−■縁上における断面図、
第８図は圧力媒体供給部の拡大縦断面図である。１・・・・・・チャック本体、１ａ・・・・・・隔壁、
２・・・・・・前面板、３・・・・・・後面板、４・・
・・・・中筒、５・・・・・・環状シリンダ、６・・・
、・・・環状ビス”トン、７・・・・・・ピストンロッ
ド、７ａ・・・・・・ラック部、ａ−−−−−−ピニオ
ン、１２−・・・・心出し部材、１′２ａ・・・・・・
ラック部、１３・・・・・・心出しジョー、１５．１６
・・・・・・圧力開口、１８・・・・・・シム、１９・
・・・・・主軸台、２０・・・・・・固定リング、２１
ａ、　　２　ｌｂ、−２１ｅ−−−−−−周溝、２２ａ
、２２ｂ。・・・２２ｅ・・・・・・圧力媒体供給孔、２３・・・
・・・スピンドル、２−４−−−−−−取付面板、２５
ａ、　　２５ｂ、−２５ｅ′・・・・・・凸条、２６ａ
、　２６ｂ、・・・２６ｅ・・・・・・凹溝、２７・・
・・・・環状膜片、２８・・・・・・貫通孔、３３・・
・・・・内ｍ、３４−−−−−−クランプシリンダ、３
５・・・・・・・クランプピストン、３７・・・・・・
逆止弁、４４・・・・・・解放ピストン、４５・・・・
・・解放シリンダ、４６・・・・・・調心リング、４８
・・・・・・クランプレバ−１５１・・・・・・ガイド
ブラケット、５２・・・・・・クランプ顎部材、５３・
・・・・・クランプジョー、５４・・・・・・ロックシ
リンダ、５５・・・・・・ロックピストン。Figure 1 is a longitudinal sectional view of the embodiment, Figures 2 and 3 are side views showing final tightening and centering temporary tightening states, and Figures 4 and 5.
Figures 6 and 7 are the lines IV-IV in Figure 1, respectively.
v-v line, VI-VI line, cross-sectional view on the ■-■ edge,
FIG. 8 is an enlarged longitudinal sectional view of the pressure medium supply section. 1... Chuck body, 1a... Partition wall,
2...Front plate, 3...Rear plate, 4...
... Middle cylinder, 5 ... Annular cylinder, 6 ...
,...Annular screw, 7...Piston rod, 7a...Rack portion, a---Pinion, 12-...Centering member, 1' 2a...
Rack part, 13...Centering jaw, 15.16
...Pressure opening, 18...Shim, 19.
... Headstock, 20 ... Fixing ring, 21
a, 2 lb, -21e------circumferential groove, 22a
, 22b. ...22e...pressure medium supply hole, 23...
・・・Spindle, 2-4---Mounting face plate, 25
a, 25b, -25e'... Convex strip, 26a
, 26b,...26e...concave groove, 27...
...Annular membrane piece, 28...Through hole, 33...
...Inner m, 34--Clamp cylinder, 3
5... Clamp piston, 37...
Check valve, 44...Release piston, 45...
...Release cylinder, 46...Aligning ring, 48
... Clamp lever 151 ... Guide bracket, 52 ... Clamp jaw member, 53.
... Clamp jaw, 54 ... Lock cylinder, 55 ... Lock piston.

Claims

[Scope of utility model registration request]

(1) In a chuck for a machine tool that grips a workpiece having a cylindrical workpiece surface, an annular piston that is axially moved by a pressure medium and slides in the axial direction of the chuck is installed in the chuck body, and the annular histone The chuck includes at least three centering members that operate in an inclined direction intersecting the axis of the chuck in conjunction with the sliding movement, and move a centering jaw attached to the tip from inside the chuck body toward the center of the front surface of the chuck body. An automatic 6-out device for a chuck that is slidably installed on the main body.

(2) An automatic 6-pull-out device for a chuck according to claim (1), in which the pressure medium is pressurized air.

(3) Piston rods of the same number as the centering members are protruded from the annular piston, and pinions of the same number as the centering members are rotatably provided in the chuck body, and each of the piston rod and the centering member meshes with the pinions. An automatic six-pull device for a chuck according to claim (1) or (2), wherein a rack part is provided to interlock a centering member with the operation of an annular piston via a piston rod and a pinion.

(4) The automatic six-pull device for the chuck according to any one of claims (1) to (3), wherein the centering jaw is replaceably attached to the centering member.