Virtual Prototype Modeling Of The Blade Rolling Mill And Simulation Of The Working System Characteristic

Roller mill(Rolling Mill)is considered as the special equipment which is used in sophisticated plastic forming of the aerial engine blades,leaving no allowance to achieve sophisticated rolling process requirements.However,due to the machining error,assembling error and the wear of the part of the device,in order to ensure the consistency of the accuracy of the blade quality,geometry about rolling mill will be inevitably adjusted.However,the parameter adjustment process of the original machine is commonly depending on manual judgment and experience of workers,there is more subjective factors on sophisticated adjustment.Therefore,according to the requirements in the reconstruction project about blade rolling mill of AVIC Shenyang Liming Aero-Engine(Group)Co.,Ltd,achieving the parameters adjusted of each system on rolling mill is controlled by computer.In order to replace the original manually adjusted,improving the accuracy and efficiency of rolling equipment,proposed the idea of regulating micro control and designed the precision positioning mechanism to adjust the upper and lower roll center distance,dies in neutral,profiling mechanism and blade automate adjustment mechanism relative to the installation location of the die in roll axial type faces.Through the establishment of a three-dimensional virtual model of rolling mill,deeply understanding about the structure of the roller mill,on the basis of multi-body dynamics and the theoretical of the contact dynamics,research on dynamics of the rolling mill between rolls,pointing out the vibration regular of the roll mill in the case of rack and gear participate driving roller mill.Through virtual simulation technology,using of a new generation of multi-body dynamics analysis software named RecurDyn,analysis and research on the kinematics regular of driving system,adjustment mechanism,contoured body and blades special fixture on the rolling mill and dynamics,mastering rolling mill working characteristics,verify the feasibility and accuracy of the mechanism.The simulation results show that:the design of servo-controlled micro-adjustment mechanism can achieve to the resolution about 0.01;blade fixture vertical displacement adjustment amount changed from 0～2.31mm;angle adjustment variation change from 0～2.96°,the relationship of the input and output with the theoretical calculated values are almost the same;contact force in drive system on the up roller between gears is greater than the down roller;profiling mechanism and the blade fixture adjustment function meets design requirements,input and output relationship with the expected results are similar.In this paper,the new generation of multi-body dynamics analysis software named RecurDyn is introduced into the research on the blade rolling mill,providing a virtual simulation platform for the blade design and renovation.While using virtual prototyping methods and ideas as well as some of the simulation results obtained are also provide some reference for the similar design about plastic forming process equipment and process equipment performance improvements.