Finish Gear Rolling by Screw-Shaped Tool : Trial Construction of Apparatus and Rolling Experiment of Tooth Surface

Abstract

A new method of finish rolling is proposed to finish tooth surfaces and fillets at roots of gears in one pass, using a screw-shaped tool. A preliminary experiment of finish rolling of only tooth surfaces of spur gears is conducted with a trial constructed apparatus. Gears with good tooth profile accuracy and good surface finish are produced without any modification of the tooth profile of the tool or the work by this method. The rolled tooth surface of the work is markedly hardened.