Analysis and experimental study of cycloid gear form grinding temperature field
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ORIGINAL ARTICLE
Analysis and experimental study of cycloid gear form grinding temperature field JianXin Su 1,2 & YanZhen Zhang 3 & XiaoZhong Deng 1,2 Received: 28 September 2019 / Accepted: 23 July 2020 / Published online: 18 August 2020 # Springer-Verlag London Ltd., part of Springer Nature 2020
Abstract Form grinding is the finishing process of the cycloid gear of RV reducer. In order to avoid the tooth surface burn of the cycloid gear during the grinding process and improve the grinding efficiency, the heat distribution ratio and the convection heat dissipation coefficient during the grinding process are calculated. The computer simulation software ANSYS 17.0 is used to calculate the instantaneous temperature field of the tooth surface during the grinding process of the cycloid gear. The distribution of the instantaneous temperature field of the tooth surface along the axial of the gear is obtained. According to the characteristics of the YK7350B gear grinding machine, the grinding process parameters is reasonably selected, and the grinding experiment is carried out. The metallographic structure of the burned section of the experimental part was observed by the ProgRes C5 metallographic measuring instrument to verify the simulation results. The research is beneficial to predict the temperature field distribution of the tooth surface of the cycloid gear and select the grinding process parameters reasonably. Keywords RV reducer . Cycloid gear . Form grinding . Tooth surface temperature field
1 Introduction RV reducer is the key component of industrial robots, which is applied to its joints. Cycloid and pin gear planetary transmission is located in the low speed stage of RV reducer, and its rotation accuracy is affected by the machining quality of cycloid gear. The generation and transfer of grinding heat in the process of cycloid gear grinding are very complicated. In the precision grinding of cycloid gear, the tooth groove envelops the profile of grinding wheel without any gap; most of the grinding energy is converted into heat, which can make the temperature in the grinding zone rise sharply. The excessively high grinding temperature will cause the tooth surface secondary tempered and burned. In severe cases, the tooth surface suffers white layer thermal damage. In order to avoid the tooth
* JianXin Su [email protected] 1
School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang, Henan, China
2
Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province, Luoyang, Henan Province, China
3
Luoyang Vocational and Technical College, Luoyang, Henan, China
surface burn, it is necessary to study the temperature field during the form grinding. Many scholars have carried out a lot of detail research on the form grinding. Stephen [1] proposed a method of determining the grinding wheel profile and its setup for finishing cylindrical gears with an evolvent profile. Wei [2] found a precision grinding method for screw rotors using CBN grinding wheel. Sh
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