Abstract:The motional analysis to beam impact during the mold opening and closing of mechanical vulcanizers was presented.The continuous accelaration main guide curve was presented. The mathematical model was build up and the simulation and optimal design based on CATIA was presented. Finally the processing code to the determined optimal guide curve was produced by CATIA_CAM, and the guide of vulcanizer wall board was produced to implemented on the vulcanizer overhaul. The beam impact was reduced by 77% so that the vulcanizer impact was resolved. The method was used in 3 vulcanizers overhaul by vulcanizer company and have got good effect.