Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (9): 1291-1296.DOI: 10.12068/j.issn.1005-3026.2020.09.013

• Mechanical Engineering • Previous Articles     Next Articles

Study on Mechanism and Theoretical Model of Tool Wear in Engineering Ceramics Turning

MA Lian-jie1,2, WANG Xin1, CHEN Jing-qiang1, ZHOU Yun-guang1   

  1. 1.School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China; 2.School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2020-03-04 Revised:2020-03-04 Online:2020-09-15 Published:2020-09-15
  • Contact: MA Lian-jie
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Abstract: Based on the tribological principle and furrow effect, the effect of ceramic material on the wear mechanism of cutting tools was discussed by cutting experiment of lithium disilicate glass ceramics. By introducing the related parameters of ceramic crystal, the influence of the morphology and arrangement for ceramic crystal on the tool wear in the turning process was revealed, which made the application of wear mechanism more extensive and intuitive. Based on geometric and kinematic analysis, a model of the tool wear of turning tools for engineering ceramics was established and tested. Both the theoretical and experimental results show that, with the increase of cutting length, the wear volume first shows a steady increase, and then due to the increasing wear surface and the heat accumulation causes the phenomenon of bond wear, the tool wear speed increases sharply, and finally leads to the tool edge breakage and failure.

Key words: wear volume, crystals, tool wear, turning, engineering ceramics

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