• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (7): 199-204.doi: 10.3901/JME.2018.07.199

• 制造工艺与装备 • 上一篇    下一篇

外花键的轴向进给增量式滚轧工艺试验研究

崔敏超, 赵升吨, 陈超, 张大伟   

  1. 西安交通大学机械工程学院 西安 710049
  • 收稿日期:2017-07-12 修回日期:2017-12-29 出版日期:2018-04-05 发布日期:2018-04-05
  • 通讯作者: 崔敏超(通信作者),男,1991年出生,博士研究生。主要研究方向为汽车零件的精密塑性成形工艺,汽车机电一体化设备。E-mail:cuiminchao@163.com
  • 作者简介:赵升吨,男,1962年出生,教授,博士研究生导师。主要研究方向为混合动力汽车智能控制、精密成形工艺等。E-mail:sdzhao@mail.xjtu.edu.cn;陈超,男,1991年出生,博士研究生。主要研究方向为混合动力汽车铝合金板料塑性连接工艺。E-mail:849918977@qq.com;张大伟,男,1991年出生,副教授,博士。主要研究方向为花键轴的塑性成形工艺。E-mail:zhangdawei2000@mail.xjtu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(51335009)。

The Experimental Study of Axial In-feed Incremental Rolling Process of Spline Shaft

CUI Minchao, ZHAO Shengdun, CHEN Chao, ZHANG Dawei   

  1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049
  • Received:2017-07-12 Revised:2017-12-29 Online:2018-04-05 Published:2018-04-05

摘要: 分析了汽车工业对于花键轴塑性成形制造工艺的需求,介绍了花键的轴向进给增量式滚轧工艺的原理和基本过程。在自主研制的交流伺服驱动轴向进给增量式滚轧成形装置上开展了初步试验研究,针对不同坯料直径和模具转速进行了相应滚轧试验,结果表明坯料直径的增加能够补偿由于材料轴向流动产生的齿顶圆高度降低;模具转速的增加能够减轻成形花键轴的齿顶拉尖现象。进一步对成形花键轴的微观组织观察发现,在齿形的齿面、齿根和齿槽的底部区域形成了细化的连续流线状纤维组织,硬度测量结果显示,该组织明显提高了花键轴齿面的抗疲劳强度和硬度。初步试验结果验证了轴向进给增量式滚轧工艺实现外花键的成形、成性一体化制造的可行性,同时为进一步应用该工艺提供了参考。

关键词: 试验研究, 外花键, 微观组织, 硬度, 轴向进给增量式滚轧工艺

Abstract: The requirement of plastic forming process of spline shaft in automobile industry is discussed and the principle of axial in-feed incremental rolling process of spline shaft is introduced. The experimental study is carried out at a servo drive axial in-feed incremental rolling equipment. A series of experiments with different blank diameters and die speeds are conducted. The results show that:the height of addendum circle decreases with the blank diameter increasing; the increase of die speed could eliminate the defect of tooth tip. In addition, the fibrous tissue with high grain density and elongated continuous streamline is obtained in the microstructure of formed spline shaft. The hardness measurement shows that the hardness of the spline shaft would be enhanced significantly by the axial in-feed incremental rolling process. The work shows that the axial in-feed incremental rolling process can realize the integration of forming and performance improving of spline shaft.

Key words: axial in-feed incremental rolling process, experimental study, hardness, microstructure, spline shaft

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