ROLLING METHOD OF GEAR

摘要

PURPOSE:To work a large sized gear with a small device in a short time by heating the prescribed part on the outside circumference of a cylindrical blank material, and pressing a roll conforming to a tooth profile to the heated part while rotating the same. CONSTITUTION:A ring blank material 1 is fixed by means of a mandrel 2 and a stopper 4 and the part to be worked is heated with a high frequency furnace C, etc. A roll X for rough finishing which is kept rotated is pressed to the heated part to work a piece of tooth. The roll X is then retreated and the mandrel 2 and the material 1 are rotated by one pitch. The heating and the rough finishing by the roll X are repeated. The roll X is exchanged with a roll Y for finishing upon completion of the rough finishing and the similar process is repeated until the working of a large sized gear A is completed. The finer crystal grains are formed in the material in the worked part by such method and the product having excellent strength performance is obtd.