The method, broaching tool as well as broaching machine for shaping and production of a internal gear member

摘要

A method of forming a internal gear member (26) with a plurality of gear teeth (30), comprising:Providing a broaching tool (10) with a first set of broach cutting teeth (20) and a second set of broach cutting teeth (22);Providing a gearwheel blank, an inner opening (28);Passing of the broaching tool (10) by the inner opening (28) of the gearwheel blank;Rotation of the broaching tool (10) by a first, predetermined amount, while the broaching tool (10) extending through the inner opening (28) of the gearwheel blank is moved through, so that the first set of broach cutting teeth (20) in the same way a first flanking portion (38a) and a second flanking portion (36a) of the plurality of gear teeth (30); andRotation of the broaching tool (10) by a second, predetermined amount, while the broaching tool (10) extending through the inner opening (28) of the gearwheel blank is moved through, so that the second set of broach cutting teeth (22) only the second flanking portion (36b) of the plurality of gear teeth (30);the broaching tool (10) is rotated sufficiently, so that the first and second flanking portions (36, 38) of each gearwheel tooth (30) between a first end portion (32) and a second end portion (34) so that one of the end portions (32, 34) is narrower than the other of the end portions (34, 32).