Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (11): 102-108.doi: 10.3969/j.issn.1000-565X.2013.11.017

• Mechanical Engineering • Previous Articles     Next Articles

Development of Electronic Impact Hammer and Corresponding Application to Modal Test of Cutting Tool

Liu Lu- ning Zhang Yang- guang Shi Zhen- yu Song Qing- hua Liu Zhan- qiang   

  1. School of Mechanical Engineering∥Key Laboratory of High Efficiency and Clean Mechanical Manufacture of the Ministry ofEducation,Shandong University,Jinan 250061,Shandong,China
  • Received:2013-05-16 Revised:2013-07-30 Online:2013-11-25 Published:2013-10-11
  • Contact: 刘战强(1969-)，男，教授，博士生导师，主要从事切削加工研究． E-mail:melius@sdu.edu.cn
  • About author:刘鲁宁(1969-)，女，济南大学副教授，硕士生导师，主要从事刀具模态、高速铣削等方面的研究．E-mail:me_liuln@ujn．edu．cn
  • Supported by:

    国家科技重大专项 (2011ZX04016-031);NSFC － 广东省联合基金资助项目(U1201245)

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Abstract:

In order to overcome the disadvantages of the manual hammer for the modal test of cutting tool,the existingautomatic hammer is comprehensively analyzed,and a test device using an electronic impact hammer is developed.The developed device consists of a workbench,a controller,a trigger,a switching power supply and an actuator,etc.It controls the traction electromagnet on/off based on the electromagnetic theory,thus driving the impacthammer by the traction force and realizing the hammer impact on the test object.Moreover,by controlling the con-tact time between the impact hammer and the test object,an ideal force pulse signal with repeatability and adjust-ability can be obtained.Finally,the frequency response functions of the cutting tool shank,the milling tool holder,the boring tool holder and the face milling cutter are respectively tested by using the developed device,and the fre-quency response curve and the modal parameters are obtained.The results show that the developed device is of sim-ple structure and easy operation,and that it helps to produce repeatable and adjustable impact force.

Key words: cutting tool, modal test, electronic impact hammer, frequency response function

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