Cutting Force Fluctuation Suppression and Error Homogenization of Noncircular Gear Hobbing Based on the Tool Shifting Method  

作　　者：Dazhu Li Jiang Han Xiaoqing Tian Lian Xia 

机构地区：[1]Institute of Artificial Intelligence,Anhui Polytechnic University,Wuhu 241000,China [2]CIMS Institute,Hefei University of Technology,Hefei 230009,China

出　　处：《Chinese Journal of Mechanical Engineering》2023年第4期167-179,共13页中国机械工程学报（英文版）

基　　金：Supported by National Natural Science Foundation of China(Grant Nos.52075142 and U22B2084).

摘　　要：The current research on noncircular hobbing mainly focuses on the linkage model and motion realization.However,the intermittent cutting characteristics of hobbing would increase uncertainties in the manufacturing process.In this paper,a hobbing machining model with tool-shifting characteristics was proposed to solve the problems of cutting force fluctuation and inconsistency of tooth profile envelope accuracy at different positions of the pitch curve in noncircular gear hobbing.Based on the unit cutting force coefficient method,the undeformed chip volume generated by interrupted cutting was used to characterize the fluctuation trend of the hobbing force.The fluctuation characteristics of the cutting force generated by different hobbing models were compared and analyzed.Using the equivalent gear tooth and hob slotting numbers,an analysis model of the tooth profile envelope error of the noncircular gear was constructed.Subsequently,the tooth profile envelope errors at different positions of the pitch curve were compared and analyzed based on the constructed model.The transmission structure of the electronic gearbox was constructed based on the proposed hobbing model,and the hobbing experiment was conducted based on the selfdeveloped noncircular gear CNC hobbing system.This paper proposes a hobbing method that can effectively suppress the fluctuation of the peak and whole circumference cutting force and reduce the maximum envelope error of the whole circumference gear teeth.

关 键 词：Noncircular gear Gear hobbing Cutting force Envelope error Machining model 

分 类 号：TG502[金属学及工艺—金属切削加工及机床]