华南理工大学学报(自然科学版) ›› 2011, Vol. 39 ›› Issue (1): 95-99.doi: 10.3969/j.issn.1000-565X.2011.01.018

• 机械工程 • 上一篇    下一篇

导电加热小孔钻削的温度仿真与试验研究

徐兰英1 伍强2 胡小芳1 叶邦彦1 李玉忠2   

  1. 1.华南理工大学机械与汽车工程学院,广东广州510640;2.广东技术师范学院数控技术广东普通高校重点实验室,广东广州510635)
  • 收稿日期:2010-06-17 修回日期:2010-08-30 出版日期:2011-01-25 发布日期:2010-12-01
  • 通信作者: 伍强(1967一),男,博士,副教授,主要从事先进制造技术研究 E-mail:510635wuqiang@163.cor
  • 作者简介:徐兰英(1972一),女,博士,广东技术师范学院讲师,主要从事先进制造技术研究
  • 基金资助:

    中国博士后科学基金资助项目(20090450865);表面功能结构先进制造广东普通高校重点实验室开放基金资助项目(SFS2010-05);2009年广东技术师范学院校级科研项目(09KJQ16)

Temperature Simulation and Experimental Investigation of Electric Hot Minipore Drilling

Xu Lan-ying1 Wu Qiang2 Hu Xiao-fang1 Ye Bang-yan1 Li Yu-zhong2   

  1. 1. The south China university of technology, mechanical and automotive engineering school, guangdong guangzhou 510640; 2. Guangdong technology normal college numerical control technology guangdong ordinary university key laboratory, guangdong guangzhou 510635)
  • Received:2010-06-17 Revised:2010-08-30 Online:2011-01-25 Published:2010-12-01
  • Contact: 伍强(1967一),男,博士,副教授,主要从事先进制造技术研究 E-mail:510635wuqiang@163.cor
  • About author:徐兰英(1972一),女,博士,广东技术师范学院讲师,主要从事先进制造技术研究
  • Supported by:

    中国博士后科学基金资助项目(20090450865);表面功能结构先进制造广东普通高校重点实验室开放基金资助项目(SFS2010-05);2009年广东技术师范学院校级科研项目(09KJQ16)

摘要: 基于非稳态热传导温度场建立钻削温度的有限元模型,动态模拟钻削区平均温度,得出切屑和工件的温度场分布.采用单因素试验分别研究了切削速度、进给量和钻头直径等对钻削温度的影响,利用K型热电偶测量工件材料钻削区的平均温度.有限元模拟的温度数值与实测数值吻合,验证了有限元模型的正确性.采用正交试验对不锈钢1Crl8Ni9Ti在导电加热钻削下的钻削温度进行拟合,获得了导电加热钻削温度的经验公式,发现对钻削温度影响最大的是切削速度,进给量次之,直径的影响最小.

关键词: 钻削, 导电加热, 热力耦合, 仿真, 拟合

Abstract:

In this paper,a finite element model of drilling temperature was established based on the unsteady-state heat-conduction temperature field,and the temperature field distributions of both the chip and the workpiece were obtained by dynamically simulating the average temperature of the drilling area.Then,some single-factor experiments were carried out to reveal the effects of cutting speed,feed and drill bit diameter on the drilling temperature,and the average temperature of the drilling area was measured using a K-type thermocouple.The simulated temperature accords with the experimental one,which verifies the proposed finite element model.In addition,according to the fitting results of drilling temperature of stainless steel 1Crl8Ni9Ti obtained by orthogonal experiments,an empi-rical formula is deduced,from which it is found that the above-mentioned factors affect the drilling temperature in order of cutting speedfeed drill pit diameter.

Key words: drilling, electric heating, thermo-mechanical coupling, simulation, fitting