Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (2): 7-13.

• Mechanical Engineering • Previous Articles     Next Articles

Detection and Characteristics of Heating Resistance of Cutting Zone in Electric Hot Machining

Zhao Xue-zhi  Ye Bang-yan  Chen Tong-jian   

  1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-03-14 Revised:2008-06-25 Online:2009-02-25 Published:2009-02-25
  • Contact: 赵学智（1970-），男，博士，副教授，主要从事现代加工技术、信号处理和故障诊断的研究． E-mail:mezhaoxz@scutedu．cn
  • About author:赵学智（1970-），男，博士，副教授，主要从事现代加工技术、信号处理和故障诊断的研究．
  • Supported by:

    国家自然科学基金资助项目（50875089）

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Abstract:

This paper defines the structure and zone of heating resistance in electric hot machining, and proposes an accurate detection method of heating resistance according to the characteristics of heating circuit, by which the influences of circuit inductance and cable resistance can be effectively eliminated. Then, the effects of cutting depth, feed and speed on the heating resistance are experimentally investigated, and an experiential formula is de- duced. Moreover, based on the relationship between the heating resistance and the cutting condition, the effect of cutting condition on the heating power is analyzed, and a method of cutting condition determination according to the heating resistance is proposed. Thus, the heating current can be automatically adjusted. The effectiveness of the proposed method is finally verified by experiments.

Key words: electric hot machining, heating resistance, cutting condition, current adjustment, detection