关键词: 振纹, 蜗杆砂轮磨, 齿面粗糙度, 工艺参数优化, 新能源车用齿轮

Abstract: Aiming at the problems of chatter marks frequently occurring in gear grinding with worm-shaped grinding wheel, the effects of grinding process parameters (linear speed of grinding wheel, axial feed speed of abrasive wheel, radial feed of grinding wheel) on machining vibrations and tooth surface roughness were investigated by orthogonal design experiments of helical gears used in a certain type of new energy vehicles. A multi-objective optimization mathematical model was established with multiple quadratic regression method to reduce vibrations and tooth surface roughness, and genetic algorithm was used to optimize grinding parameters. The results show that the optimized processing parameters may greatly reduce the vibrations in grinding while maintaining the stable roughness value of tooth surfaces, effectively prevent the generation of chatter marks and prolong the working life of the machine tools.

Key words: chatter mark, worm-shoped grinding wheel, tooth surface roughness, processing parameter optimization, gear for new energy vehicles