Patent ID: 6883407

Claim:
An expanding collet assembly, comprising: a moveable arbor having first surfaces constructed and arranged to slidingly engage a pick-off spindle nose so as to place said moveable arbor in driven relation with the pick-off spindle nose, and second motion-translating surfaces constructed and arranged to slidingly engage an expanding collet to drive said expanding collet between expanded workpiece-gripping positions and contracted positions thereof; an expanding collet having one or more sets of collet motion-translating surfaces, at least one of said one or more sets of collet motion-translating surfaces corresponding to the second motion-translating surfaces of said moveable arbor and being constructed and arranged to engage the second motion-translating surfaces of said moveable arbor, said collet and second motion-translating surfaces being contoured so as to drive said expanding collet into said expanded workpiece-gripping position in response to an axially forward motion of said moveable arbor; and an ejector assembly coupled to a forward end of said moveable arbor; wherein said expanding collet is adapted to grip an inner circumferential surface of a workpiece.