For the features thathardened gear in the gearboxof car require highwear resistance

longer life and lownoise

taking the gear of the 20CrMnTi steel material as a research object

the heat distortion affection on heat treatment process for the 20CrMnTi steel gear are analyzed deeply.From the machining viewpoint

the two finish machining processes:grinding and honing forhardened gear afterheat treatment are analyzed

and the effects of machining precision and productivity between themare compared.Finally

the gearpowerful honing is the bestfinishmachining method to improve precision and reduce gearing noise is proposed.