In order to improve the life of filtering reducer,a new structure is designed that gear tooth is slotted and tooth slotting is filled with red copper,hard aluminum alloys,nylon 1010 and nitrile rubber.Reducer finite element model (FEM) in different meshing locations is established based on a meshing model of planetary transmission with small tooth number difference,by which the meshing force in different engaging position is calculated.A mixed lubrication model is established by considering the roughness of tooth surface to calculate the lubrication status with different rotation speeds.The results of FEM analysis show that filler materials can increase the number of meshing pairs and decrease the meshing fore significantly.And maximum contact force decreases with the reduction of elastic modulus of filler materials.Lubrication calculation results show that filler materials can improve the lubrication performance effectively. Filler materials can increase the average film thickness in contact interface.The contact area ration is decreased by filler material when rotating speed is less than 1 500 r/min,as rotating speed exceeds 1 500 r/min,the decrease is not obvious.When speed is more than 1 500 r/min, Filler materials can reduce the maximum contact stress in engage in and engage out point,however,the variation of maximum contact stress is irregular with the variation of the elastic modul
