Patent ID: 6241261
Filing Date: 2001-06-05
Classification: B23B,Y10T

Abstract:
A chuck (1) with movable base jaws (11) disposed in radially extending grooves (3) in a chuck body (2), with a releasable top jaw (21) positioned on selected ones of the base jaws (11) to hold a workpiece (10), wherein a joining piece (12) is formed onto each of said base jaws (11) said joining piece (12) comprising a pin (13) having a hole (14) extending radially therethrough and a pin (32) disposed in the hole (14), the joining piece protruding in a direction of the top jaw (21), said joining piece (12) engaging in an opening (22) in the top jaw (21), said top jaw (21) having holes (26,27) therein substantially normal to the opening (22) and to the joining piece (12) disposed in the opening (22), and wherein the top jaws (21) are adapted to be clamped onto the selected ones of the base jaws (11) and the joining pieces (12) by quick clamping devices (31) comprising opposed holding screws 37, 38 disposed in the holes (26,27) and joining the pin (32).