公开(公告)号：EP1531957A1

公开(公告)日：2005-05-25

申请号：EP02796004.6

申请日：2002-12-23

申请人： Hardinge, Inc.

发明人： SMITH, Roger, R. ,  ROBERTS, Matthew, C., Jr.

IPC分类号： B23B31/40 ,  B23Q3/12

CPC分类号： B23B31/4033 ,  B23Q3/12 ,  Y10T82/10 ,  Y10T82/2514 ,  Y10T279/1008 ,  Y10T279/1041 ,  Y10T279/3481

摘要： An expanding, inner diameter gripping collet assembly (10) for a pick-off spindle. An arbor base (18) is connected to the pick-off spindle (12) and is moveably connected to a moveable arbor (16). The moveable arbor (16) engages and is driven by the pick-off spindle nose (14). The moveable arbor (16) has motion-translating cam surfaces (65) on one end that engage corresponding surfaces on one end of an expanding collet (26). A drawplug (20) having motion-translating cam surfaces (70) that engage corresponding ones (68) on the other end of an expanding collet (26) is inserted through the moveable arbor (16) and secured into the arbor base (18). The collet assembly (10) also includes an ejector housing (22), in which an ejector (24) is positioned for sliding movement. A compression spring (60) biases the ejector (24) forwardly.