华南理工大学学报（自然科学版）2025，Vol.53Issue(10)：118-130,13.DOI:10.12141/j.issn.1000-565X.240505
基于混合润滑分析的RV减速器磨损模型
Wear Model of RV Reducer Based on Mixed Lubrication Analysis
摘要
Abstract
Compared with traditional planetary gear reducers and harmonic drive reducers,the rotary vector(RV)reducer features higher power density and is widely used in fields such as aerospace and aviation special equip-ment,industrial robots,high-end CNC machine tools,etc.However,in special and extreme environments,particu-larly under severe operating conditions involving high/low temperatures,heavy loads,and high speeds,the compo-nents within RV reducers demand exceptionally high machining precision.Micron-level errors can cause multi-tooth meshing under load to evolve into multi-tooth interference.This compromises lubrication between compo-nents,ultimately leading to wear-induced failure.However,current research on the wear behavior of RV reducers under special extreme working conditions remains inadequate,and no effective wear prediction model has been es-tablished.Based on tribology theory and gear meshing principles,this study first conducted kinematic and force analyses of key components to determine the contact geometry,velocities,and loads of tribo-pairs.Subsequently,macroscopic contact geometry,microscopic surface topography,velocities,and loads were incorporated into the Reynolds equation and film thickness equation to establish a mixed lubrication analysis model for RV reducer com-ponents.Based on this,it solved the hybrid lubrication model for different components to obtain the interfacial film thickness of parts,thereby determining that the cycloidal-pin wheel and needle bearing exhibit the poorest lubrica-tion state among RV reducer components and represent the most vulnerable weak links prone to wear failure.Using wear failure of these vulnerable components as the reducer's wear failure criterion,an RV reducer wear model based on the hybrid lubrication model was established.Finally,equivalent friction-wear experiments were con-ducted to calibrate the wear model using experimental data.The ultimately established wear model enables predic-tion of RV reducer wear under special extreme working conditions,providing theoretical support for enhancing its service performance.关键词
RV减速器/摆线针轮/滚针轴承/混合润滑/磨损模型Key words
RV reducer/cycloidal-pin wheel/needle bearing/mixed lubrication/wear model分类
机械制造引用本文复制引用
倪文成,李林凌,赵志军,吴琼,李俊阳,程功..基于混合润滑分析的RV减速器磨损模型[J].华南理工大学学报（自然科学版）,2025,53(10):118-130,13.基金项目
国家自然科学基金-航天先进制造技术研究联合基金项目(U2037602) Supported by the National Natural Science Foundation of China-Joint Fund for Aerospace Advanced Manufactur-ing Technology Research(U2037602) （U2037602）
