Forming Load and Metal Flow of Rotary Forging Process for Spiral Bevel Gear

Abstract

Rotary forging can overcome the shortcoming of cutting machining and reduces the forming load of the precision forging process. In this paper, the rotary forging process of spiral bevel gear was studied using finite element method, deformation and L-t (load–time) curve at every stage was analyzed. Thereby tooth filling phase during rotary forging of spiral bevel gear was obtained. At the same time, the formation of the inside, mid-point and outside at the addendum and dedendum of the convex and concave surface on the blank was also analyzed. As a result, the reason that the outside is difficult to fill was explained. Via theoretical Calculation and the lead specimen test, the rotary forging process of spiral bevel gear was verified which demonstrated the validity of the rotary forging process of spiral bevel gear.