LIU Qin qin, LV Gang

 

(1. Mechanical Engineering Department, Jincheng College of Sichuan University, Chengdu 611731, China; 

2. R & D

Center of Mechatronics and Intelligent Control, Zigong Innovation Center of Zhejiang University, Zigong 643000, China)

 

 

Abstract: In order to solve pitch curves of N Lobed non circular bevel gear being discontinuous,a novel pitch curve design method for non circular bevel gear(NCBG) was presented to simplify design of NCBG, the intersection curve equations between pitch cone surface of non circular gear and spherical surface were derived, and the intersection curve was taken as pitch curve of NCBGs. Bevel gear with spherical involute was considered as generating cutter of NCBGs tooth profile, and mathematical models between pitch surface of bevel gear cutter and that of NCBGs were established. Based on this model, a machining simulation algorithm was developed. Based on simulation to enveloping motion on pitch curves of non circular bevel gear, the process of the non circular bevel gear can be achieved. The results indicate that by designing Pascal curves of bevel gear, the design method is extensive applicable value,and algorithm is practical for improving processing efficiency of non circular bevel gear, while generating curves of tooth profile can be taken by using machining simulation algorithm.

 

Key words: bevel gear; machining simulation; pitch curve; generating cutter