JPS5978001U

JPS5978001U - Thin cylindrical chuck device

Info

Publication number: JPS5978001U
Application number: JP17417182U
Authority: JP
Inventors: 寺嶋　正隆
Original assignee: トヨタ自動車株式会社
Priority date: 1982-11-17
Filing date: 1982-11-17
Publication date: 1984-05-26

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 the drawing]

第１図は実施の１例の正面図、第２図は第１図中■−■
線断面図、第３図イ１ロ、ハおよび二は、それぞれ異な
る把持爪内面の基礎構造を示す正面図、第４図イは第３
図イ中■イー■イ線断面図、第４図口は第３図ロ中■ロ
ー■口線断面図、第４図ハは第３図ハ中■バー■へ線断
面図、第４図二は、把持爪の別の実施例の横断面図、第
５図は旋盤加工時の作用説明図、第６図イおよび口は、
本考案のチャック装置と従来のチャック装置とを用いた
際の真円度の偏祷状態を示す線図、第７図イおよび口は
、本考案のチャック装置を用いた際の切削量の偏倚状態
を示す線図、第８図は従来のチャック装置を示す縦断面
図、第９図は第８図中■−■線断面図である。１：主軸、２：チャック基体、３．　４．　５：把持爪
、３６、　３７：内面、３Ｂ、　　３９．　４０．　４
１：弾性体。ｒイノＩＶ４　　　　　　　　ｆｆＯ− 〇　　”゛　ｍ− ■ハ゛　　　　　　　　　　　　ｔイノ　　　　　　　　　
　　　　　　　　　−“　　ｌ第５図　　　− ［−ｍ−］４１　　　　シヘー、Ｊ　　−１＋１ −りFigure 1 is a front view of one example of implementation, Figure 2 is ■-■ in Figure 1.
Line sectional views, Figures 3A, 1B, 3C and 2 are front views showing different basic structures of the inner surface of the gripping claws, and Figure 4A is the 3rd view.
Figure 4 is a cross-sectional view taken along line A, middle ■E, ■A, Figure 4 is a cross-sectional view taken along line B, middle ■R, ■, and Figure 4 is a cross-sectional view taken along line C, middle ■, and bar ■ in Figure 3. 2 is a cross-sectional view of another embodiment of the gripping claw, FIG. 5 is an explanatory diagram of the operation during lathe processing, and FIG.
A diagram showing the eccentricity of roundness when using the chuck device of the present invention and a conventional chuck device, Figure 7 A and 7 show the deviation of the cutting amount when using the chuck device of the present invention. Diagrams showing the state, FIG. 8 is a vertical sectional view showing a conventional chuck device, and FIG. 9 is a sectional view taken along the line ■--■ in FIG. 1: main shaft, 2: chuck base, 3. 4. 5: Gripping claw, 36, 37: Inner surface, 3B, 39. 40. 4
1: Elastic body. r Ino IV4 ffO- 〇 ”゛ m- ■High t Ino
-“ lFigure 5 - [-m-] 41 Shihe, J -1 +1 -ri

Claims

[Scope of utility model registration request]

A plurality of gripping claws in the shape of a torus divided into a plurality of parts along the circumferential direction are arranged in an annular shape on the chuck base,
Each gripping pawl is assembled to the chuck base so as to actively and selectively expand and contract radially inward and outward an equal distance toward the center of the chuck base, and the inner surface of each gripping pawl is A chucking device for a thin cylindrical body, characterized in that the chuck device has a shape corresponding to the outer surface shape of the cylindrical body, and has an elastic body protruding from the inner surface.