Analysis On The Transmission Characteristic Of RV Reducer

In this dissertation, RV (Rotate Vector) reducer that is the closed type planetary gearwith the cycloid gear is intensively and systematically investigated. Based on thecharacters of the structure, an error analysis model and a virtual prototype model ofrigid-flexible coupling system are developed. The main contents are as follows:Firstly, on the basis of in-depth investigation into the structure and line of actionincremental principle of RV transmission mechanism, the error analysis modelincluding the integrated effects of all errors is formulated by using the errorstransferring matrix based on the principle of the projection of original error in thedirection of applied force, revealing the error transfer process of the commoncomponent and coupling relationship between the feedback-error and geometric errors,which offers a useful method for the precision analysis and design of the mechanism.Secondly, after determining the analysis type, the contact conditions and constraintrelations, the virtual prototype model of rigid-flexible coupling system is constructedin the ABAQUS, also the model takes the elastic deformation of the parts and thenonlinear contact of the tooth surface into accounted. All these can construct thetechnical support for revealing the mechanical properties.Finally, the system of the natural frequencies and corresponding mode shapes in onemotion cycle are obtained through the modal analysis. Through the dynamicsimulation, the dynamic responses of main drive train-parts are evaluated, also thedistribution regularities of the contact position, contact forces and stress-strainbetween cycloid gear and pin are found, which provide references for geometricdesign and modification of cycloid gear.