Study on Designing Gear Cutting Fixtures

Abstract

For making gears of high precision with high efficiency, it is natural to use the best gear hobbing machines and hobs, but the gear cutting fixtures also play an important role. In this paper, a method for designing gear cutting fixtures is reported. The main results are summarized as follows. (1) For making gears of high precision with high efficiency, the centering and clamping of the gear blank is essential. (2) The force of clamping a gear blank should be set up that the gear blank is not turned by the cutting force. (3) For this purpose, the equations for calculating three components of the cutting force in gear hobbing were set up, as well as the equation for the relation between the cutting force in gear hobbing and the force of clamping a gear blank. In this paper, the method of designing gear cutting fixtures for gear hobbing machines is discussed, but it seems to be applicable to other gear cutting machines.