Preliminary Study on the Rotational Indexing Machining Technology of Straight Bevel Gear

Abstract

Aiming at the disadvantages of intermittent indexing in the existing straight bevel gear machining methods, a continuous indexing machining method is proposed based on the principle of cycloid rotational indexing. The principle of rotational indexing machining of straight bevel gear is explained by the mathematical method of the space curve approximating straight line. On this basis, the mathematical models of forming motions are established. The relations of useful parameters are built with these models, and then the cutting point trajectory is obtained. The parameters are adjusted according to the approximation straightness of curve segment to generatrix on tooth surface. By means of calculation and numerical simulation of an example, the feasibility of the rotational indexing machining method for straight bevel gear is proved.