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《Journal of Synthetic Crystals》 2003-01
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Investigation on the Mechanism of Discontinuous Grinding Polycrystalline Diamond with Slotted Diamond Wheels

WU Chun li, WANG Jin jun, ZHANG Jian hua (College of Mechanical Engineering, Shandong University ,Jinan 250061,China) (Received 7 May 2002,accepted 22 July 2002)  
The mechanical shock and thermal impact in the machining process of discontinuous grinding polycrystalline diamond with slotted diamond wheels were investigated systemically by the simulation experiments of ultrasonic vibration and pulse laser heating respectively. Experimental results show that the mechanical shock caused by the periodical changing of grinding force is propitious to the micro brittle break up of the diamond grains in the machining area of polycrystalline diamond material. The thermal impact caused by the periodical changing of grinding temperature is favorable for the diamond grains in the machining area of polycrystalline diamond material to occur thermal micro cracks and fatigue cracking. Experimental results show that the diamond grains in the front part of the grinding pieces are consumed basically by breakage, and the diamond grains in the retral part of the grinding pieces are consumed mainly by mechanical wear, oxidation, and changing to graphite.
【CateGory Index】: O786
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【Co-citations】
Chinese Journal Full-text Database 3 Hits
1 GAO Hang, LI Jian (School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110004, China.;General Expression of Grinding Temperature Field and Its Visual Simulation Analysis[J];Journal of Northeastern University(Natural Science);2004-06
2 Yang Yongsheng et al.;Estimation and Rational Matching of Grinding wheel Topography[J];MACHINERY;1999-02
3 Xu Hong-jun, Xu Xi-peng, Lin Tao, Zhang You-zhen(Faculty 505 Nanjing University of Aeronautics and Astronautics, Nanjing, 210016);ANALYSIS OF THE PULSATING TEMPERATURE FIELD DURING INTERMITIENT GRINDING[J];Acta Aeronautica Et Astronautica Sinica;1993-06
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