Meshing Characterization Analysis of Friction Dynamics of Robot RV Reducer Cycloid Pin Wheel in Mixed Lubrication Condition
IIn order to improve the dynamic design and analysis accuracy of RV reducers,the cycloidal pin wheel drive mechanism of a robot RV reducer is taken as the research object,and the friction dynamics model of the cycloidal pin wheel under mixed lubrication is established from the perspective of dynamics considering tribological factors.The load sharing theory is applied to improve the oil film stiffness calculation,and the correction coefficient of the oil film load ratio function is proposed to reduce the Gelinek-Schipper pressure and Greenwood-Tripp pressure errors.The total friction coefficient of the cycloidal wheel teeth under mixed lubrication is constructed,and the average pressure angle of multi-tooth gearing is introduced to improve the analysis efficiency.The effects of elastic hydrodynamic lubrication parameters on the dynamic and tribological properties of the system are discussed.The results show that the oil film thickness and friction coefficient of the cycloidal pin wheel are greatly affected by rheological index and ambient viscosity,and are less affected by input speed.The torsional deformation and vibration of the crank shaft are larger than that of the output disk,and the friction force increases the torsional deformation of the cycloidal wheel.By selecting the appropriate lubricant and input speed,the friction coefficient and the friction force of the elastic hydrodynamic lubrication can be reduced,which can slow down vibration and improve the transmission stability of the RV reducer.
NETL
NSTL
万方数据
