EXPANDING COLLET ASSEMBLY FOR PICK-OFF SPINDLE

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 moti on- translating cam surfaces (70) that engage corresponding ones (68) on the oth er 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.