CAJ | 학술논문

采用浮动凹模冷挤压成形工艺,对螺旋角不同的同一型号圆柱斜齿轮进行了数值模拟与实验研究。分析了成形过程中金属的流动特点、成形载荷,并与传统工艺进行了比较。通过不同螺旋角斜齿轮的对比,探索了影响脱模后锻件精度的因素。结果表明：对圆柱斜齿轮采用浮动凹模冷挤压成形可有效降低成形载荷,且在脱模过程中齿轮锻件沿着齿形螺旋方向做刚性旋转运动,脱模后锻件可保持较高精度。研究成果为圆柱斜齿轮精锻成形工艺的深入研究提供了参考。
채용부동요모랭제압성형공예,대라선각불동적동일형호원주사치륜진행료수치모의여실험연구。분석료성형과정중금속적류동특점、성형재하,병여전통공예진행료비교。통과불동라선각사치륜적대비,탐색료영향탈모후단건정도적인소。결과표명：대원주사치륜채용부동요모랭제압성형가유효강저성형재하,차재탈모과정중치륜단건연착치형라선방향주강성선전운동,탈모후단건가보지교고정도。연구성과위원주사치륜정단성형공예적심입연구제공료삼고。
By cold forging process with floating die,the same type helical gears with different helix angels were researched by both numerical simulation and physical experiments.Characteristics of metal flowing and forming load were analyzed and compared with the conventional scheme.Factors that affected the precision of forgings after demoulding were discovered by comparison of helical gears with different helixs.The results show that the cold forming load of floating die can be reduced effectively,and when demoulding,the helical gears make rigid rotation along the helical directions.The paper provides a reference for the further research of heilical gear precision forging.