JPS63703U

JPS63703U -

Info

Publication number: JPS63703U
Application number: JP9316586U
Authority: JP
Priority date: 1986-06-17
Filing date: 1986-06-17
Publication date: 1988-01-06

Description

[Brief explanation of the drawing]

第１図は第１の実施例を示す縦断側面図、第２
図は同実施例の正面図、第３図は第１図の―
線に沿う断面図、第４図は同実施例における一部
材の側面図、第５図は同部材の一部分の底面図、
第６図は同部材の斜視図、第７図は第２の実施例
を示す縦断側面図、第８図は同実施例における一
部材の斜視図、第９図は従来例を示す縦断側面図
である。Ｘ……チヤツク中心線、１０……チヤツク部材
、１１……チヤツク部、１２……円形軸部、１３
……ピン、１４……カムピン、１５……カム溝、
２１……流体圧シリンダ、２３……支持ブロツク
、３４……マンドレル。 Fig. 1 is a vertical sectional side view showing the first embodiment;
The figure is a front view of the same embodiment, and Figure 3 is the same as Figure 1.
4 is a side view of one member in the same embodiment; FIG. 5 is a bottom view of a portion of the same member;
Fig. 6 is a perspective view of the same member, Fig. 7 is a longitudinal side view showing the second embodiment, Fig. 8 is a perspective view of one member in the same embodiment, and Fig. 9 is a longitudinal side view showing the conventional example. It is. X...Chuck center line, 10...Chuck member, 11...Chuck portion, 12...Circular shaft portion, 13
...Pin, 14...Cam pin, 15...Cam groove,
21...Fluid pressure cylinder, 23...Support block, 34...Mandrel.

Claims

[Scope of utility model registration request]

Each of the plurality of chuck members 10 having chuck portions 11 assembled around the chuck center line X to form a substantially circular shape is provided with a circular shaft portion 12 eccentric to the chuck center line. A pin 13 rotatably supports the chuck member 10 so that the aggregate of the chuck portions 11 can expand and contract while maintaining a substantially circular shape, and is driven forward and backward by fluid pressure on the chuck center line X. and the circular shaft portion 12
In between, each chuck member 10 is moved forward and backward by the pin 13.
A chuck device for a machine tool, characterized in that cam means 14 and 15 are provided for rotationally displacing the chucks at the same time.