关键词: 成形磨削|齿向修形|接触线|优化方法

Abstract: To improve the accuracy of tooth-trace modification, the simultaneous contact lines were obtained accurately in accordance with the space engagement theory and its relationship with respect to tooth trace modification grinding wheel setting parameter were discussed. A conclusion was drawn that the twist of modified tooth could be improved by adjusting the grinding wheel setting angle. According to the mathematic model for error evaluation of modified tooth surface in form grinding process, a contact lines optimization method was proposed based on changing wheel and work-piece setting parameters, and a case of drum tooth-trace modification was used to validate the proposed method. The results showed that the method could eliminate the twist of crowning helical gears and reduced the corrected errors.

Key words: form grinding|tooth-trace modification|contact lines|optimization method