公开(公告)号：US20040156690A1

公开(公告)日：2004-08-12

申请号：US10728116

申请日：2003-12-04

申请人： ROHM GmbH & Co. KG

发明人： Eugen Hangleiter

IPC分类号： B23C005/26

CPC分类号： B23B31/30 ,  Y10T279/1291 ,  Y10T279/27 ,  Y10T409/309464

摘要： A chuck actuator has a hollow housing having a chamber and having a front end and a rear end. A ring in the chamber forms with the front end thereof a front compartment and a piston in the chamber between the ring and the rear end forms an intermediate compartment with the ring and a rear compartment with the rear end. A stem on the piston projecting forward through the ring and through the intermediate and front compartments is adapted to engage and open a chuck and is formed with a region of enlarged diameter. The piston is shiftable between a rear position with the enlarged-diameter region offset rearward from the ring and with the stem forming with the ring an axially extending passage between the front and intermediate compartments and a front position with the enlarged-diameter portion fitting snugly in the ring and substantially closing the passage.

摘要翻译： 卡盘致动器具有中空壳体，其具有腔室并具有前端和后端。 室中的环形成其前端具有前隔室，并且在环和后端之间的室中的活塞形成具有环的中间隔室和具有后端的后隔室。 通过环向前突出并穿过中间和前隔室的活塞上的杆适于接合和打开卡盘，并且形成有直径增大的区域。 活塞可以在从环之后偏离的扩大直径区域的后部位置和与环形成的杆之间移动，在前部和中间隔室之间具有轴向延伸的通道，并且具有扩大直径部分的前部位置紧密地配合 环并且基本上关闭通道。