Patent ID: 7708287
Filing Date: 2010-05-04
Classification: B23B,Y10T

Abstract:
1. A collet assembly adapted for use on a disk processing machine that is capable of processing two disks simultaneously, said collet assembly comprising: a drawbar in communication with an actuating device, an expander with an expander head comprising a plurality of expander blades, said expander head having a larger diameter at an outer end than at an inner end, and a mounting chuck comprising a plurality of chuck blades that contact the disk or disks to be processed; wherein when said drawbar is actuated, said drawbar pulls said expander rearward such that said head of said expander is pulled through a travel stroke in an interior of said mounting chuck within said collet assembly, said head of said expander thereby urging said chuck blades outward so that a contact area of each said chuck blade contacts an inner diameter of the disk or disks, contact of said chuck blades with said inner diameter being accomplished without longitudinal movement of said mounting chuck, and wherein each of said chuck blades comprises a discrete contact surface, a position of said contact surface varying between alternating chuck blades, so that said chuck blades with a contact surface in a first position contact a first disk without contacting a second disk, and said chuck blades with a contact surface in a second position contact said second disk without contacting said first disk.