Abstract:In order to solve the innerring casing quality problems，such as the deformation of the part，the size over tolerance，etc，the continuous simulation of multiprocess，and the analysis and optimization of the process route and the processing sequence are conducted.On this basis，the main factors affecting the quality of the part are determined，and the corresponding solutions are put forward.The results show that the machining accuracy is improved by 80.34%，the machining cycle is shortened by 11.9%，so the production efficiency is obviously improved.Therefore，the multiprocess simulation technology is effective in balancing the cutting force，homogenizing the surface stressstrain field and controlling the machining deformation.