Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (3): 393-398.DOI: 10.12068/j.issn.1005-3026.2020.03.016

• Mechanical Engineering • Previous Articles     Next Articles

Workpieces’ Surface Material Removal Mechanism of Disc Grinding

SUN Cong1, LI Qing-liang1, XIU Shi-chao1, LIU Hong-wei2   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China;2. Shenyang Haimo CNC Machine Tool Co., Ltd., Shenyang 110179, China.
  • Received:2019-03-04 Revised:2019-03-04 Online:2020-03-15 Published:2020-04-10
  • Contact: XIU Shi-chao
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Abstract: In terms of the uneven removal and substandard flatness on the workpiece’s surface in disc grinding, a calculation method with multiple grits’ removal rate was proposed. Firstly, a mathematic model for the disc wheel’s grits’ distribution was established considering the grits’ sizes and the positions. Then, the multiple grits’ dynamic trajectory equation was deduced. Meanwhile, the workpiece’s removal rate model was established on this basis. The rationality of the model was further validated by the experiment of disc grinding. The results show that the removal effect appears to be uneven on the workpieces’ surfaces of disc grinding. It is the lower removal rate that leads to the embossment phenomenon in the central location. Moreover, the height difference of ground workpieces’ surface profile goes up with the increase of the speed ratio. Therefore, it is advisable to reduce the speed ratio so as to improve the consistency of the ground workpieces’ surface.

Key words: disc grinding, trajectory equation, removal rate, embossment phenomenon, speed ratio

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