Study on Influence of Profile Modification on Transmission Performance of Spur Gear

Abstract

Profile modification is an important method used for improving the spur gear transmission performance. By using the engineering software of Romax Designer, the transmission system model of single-stage cylindrical spur gear is established. And taking the elimination of impact loads in spur gear transmission process as the target, the full tooth profile modification of driving gear is completed with the modification curve of parabola. The flash temperature, oil film thickness and transmission error are taken as the indexes for measuring the transmission performance of spur gear. Through comparing the surface flash temperature, oil film thickness and transmission error before and after profile modification, the influence of profile modification on transmission performance of driving gear is obtained. The simulation and investigation results show that profile modification plays an important role in reducing the flash temperature, improving the tooth lubrication state and narrowing the fluctuation range of spur gear transmission error.