Patent ID: 6325573
Filing Date: 2001-12-04
Classification: B23F,Y10T

Abstract:
An assembly comprising:a hobbing cutter having an axial throughbore and a holding arbor extending through the throughbore, wherein the ends of the throughbore of the hobbing cutter have cylindrical centering surfaces made by a grinding operation;the arbor having complementary seating surfaces, with a radial space between the centering and the seating surfaces;axial chuck means adapted to axially clamp the hobbing cutter onto the arbor;a sleeve-shaped cage (36, 56, 56a, 58) being disposed between the centering surfaces (32, 34, 32a, 34a) and the seating surfaces, the cage having a thickness which is smaller than the radial space, and the cage having an outside diameter which is smaller than the inside diameter of centering surfaces (32, 34, 32a, 34a), the cage (36, 56, 56a, 58) supporting, in a circumferential direction, at least two metallic chuck members (38), which are adapted to be moved radially with respect to the cage and are in contact with the associated centering surface and the seating surface, and the radial extension of the chuck members being slightly larger than that of the radial space so that the chuck members are slightly deformed and clamped between the centering and seating surfaces in order to center the hobbing cutter on the holding arbor.