Patent ID: 9475143
Filing Date: 2016-10-25
CPC Classification: B23C,B23F,Y10T

Claim Text:
1. A gear hobbing tool comprising: a head having a front side, a back side, and a center axis on which the head is rotatable; and a plurality of chip removal units detachably mounted along the front side of the head, each chip removal unit including an insert holder having an upper part and a bottom part anchored in the head, and a replaceable milling insert fixed in a seat located in the upper part of the insert holder and delimited by an axial support and a tangential support by a screw having a male thread and a key grip at one end, wherein the seat of each insert holder is placed between at least two shoulders included in the upper part and protruding in the direction from the front side of the head, a first shoulder of which includes the tangential support, and each milling insert is arranged between the tangential support and a wedge having a through hole that extends between an upper side and an under side of the same and accommodates the screw, the male thread thereof being tightened in a threaded hole in the insert holder, and with the key grip facing upward in relation to the wedge, the wedge including two opposite contact surfaces, which converge toward the underside of the wedge, one of which facing the milling insert and the other facing the second shoulder.