现代制造工程 ›› 2017, Vol. 436 ›› Issue (1): 94-99.doi: 10.16731/j.cnki.1671-3133.2017.01.018

• 制造技术/工艺装备 • 上一篇    下一篇

45淬硬钢干式切削刀-屑接触区域温度场分布研究

何志锋1,2,3, 唐德文1,2,3, 谢宇鹏1,2,3, 李朋雪1,2,3, 周雄锋1,2,3   

  1. 1 南华大学机械工程学院,衡阳 421001;
    2 核设施应急安全技术与装备湖南省重点实验室,衡阳 421001;
    3 湖南省核燃料循环技术与装备协同创新中心,衡阳 421001
  • 收稿日期:2015-04-20 出版日期:2017-01-20 发布日期:2018-01-10
  • 作者简介:何志锋,硕士研究生,研究方向为高速切削过程中刀具磨损及加工表面残余应力。唐德文,副教授,硕士研究生导师,研究方向为先进制造技术及装备等。谢宇鹏,讲师,研究方向为乏燃料剪切机可靠性等。李朋雪,硕士研究生,研究方向为钢管连轧过程工艺优化。周雄锋,硕士研究生,研究方向为新型屏蔽合金铸造工艺优化。E-mail:hezf1990@163.com
  • 基金资助:
    中国博士后面上基金项目(2013M542123);湖南省自然科学基金资助项目(11JJ4035);湖南省重大专项项目(2012FJ1007);湖南省自然科学省市联合基金项目(2015JJ5023)

Study on temperature field distribution of tool-chips contact area for dry cutting 45 hardened steel

He Zhifeng1,2,3, Tang Dewen1,2,3, Xie Yupeng1,2,3, Li Pengxue1,2,3, Zhou Xiongfeng1,2,3   

  1. 1 School of Mechanical Engineering,University of South China,Hengyang 421001,Hunan,China;
    2 Hunan Provincial Key Laboratory of Emergency Safety Technology and Equipment for Nuclear Facilities,Hengyang 421001,Hunan,China;
    3 Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment,Hengyang 421001,Hunan,China
  • Received:2015-04-20 Online:2017-01-20 Published:2018-01-10

摘要: 针对45淬硬钢干切削过程,考虑刀-屑接触区域热流密度不均匀性和热分配率不均匀性等因素,基于热源法建立前刀面刀-屑接触区域三维温度场解析模型,并利用验证试验和解析模型,研究前刀面刀-屑接触区域温度场分布规律。结果表明:模型预测值与实验值相吻合,两者误差低于3.26%;且前刀面刀-屑接触区域温度场分布呈均匀梯度分布;最高温度位置出现在刀-屑接触界面粘结摩擦区域结束处附近,最高温度位置受切削速度影响较小;最低温度位置出现在刀-屑接触界面边缘处。该模型具有较高准确度,对研制新型刀具、降低刀具磨损、提高加工效率和加工质量具有重要指导意义。

关键词: 干式切削, 刀-屑接触区, 温度场, 解析建模

Abstract: A theoretical model is proposed to predict the temperature distribution of tool-chips contact area in dry cutting 45 hardened steel.In homogeneity of heat flux density and the rate of heat distribution between of tool and chips are considered in this model.Temperature distribution of tool-chips contact area was studied based on the relevant cutting experiment and the model.Results show that the calculation results basically agree with the experiment data,the deviations are less than 3.26%.The temperature field distribution distribute with uniform gradient in tool-chips contact area.It is almost not influenced by cutting speeds that the position of maximum temperature is near the end of adhesive friction area in the centre of tool-chips contact area,the position of minimum temperature is near the edge of tool-chips contact area.The model is accurate,simple,which can provide a theoretical basis for future development of new tool,reduction of tool wear,improvement of processing quality and efficiency.

Key words: dry cutting, tool-chips contact area, temperature field, theoretical model

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