Influences of key forging parameters on gear-tooth deviation of cold forged spur bevel gear

摘要

An elastic-plastic FE simulation model is proposed to predict the evolution of gear-tooth deviation in cold forging of a spur bevel gear, and the reliability of this FE model is verified by experiment. Then, the influences of the interference value of die shrink fitting, the forming degree of a preformed billet and the friction factor on the tooth thickness error and the shape error of the tooth surface were investigated comprehensively. The results show that, he forming degree of the preformed billet has the most significant influence on the gear-tooth deviation, the interference value of die shrink is secondary, and the impact of friction factor is slight.