Procedure and equipment for mfg. gearwheels - with stages including clamping disc=form blank, heating up outer circumferential region to 400=500 deg C, and then forging it to form thickened section for pressing for plastic deformation

摘要

Mfr. of the gearwheel is carried out in stages. The procedure involves clamping a disc-form blank (10), heating up the outer circumferential region up to a temp. of 400-500 deg C, and then forging it to form a thickened section. The thickened portion is then pressed for plastic formation of gear teeth in the outer circumferential region of the disc-form material. The pressing includes a first stage for producing the rough form of the gearwheel, and a second stage for producing the finished item.