Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (11): 1630-1635.DOI: 10.12068/j.issn.1005-3026.2018.11.022

• Mechanical Engineering • Previous Articles     Next Articles

Milling Force Coefcient Identication for Multi-axis and Ball-End Milling Cutter

WANG Bo, LI Bai-chun, YANG Jian-yu, WANG Wan-shan   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2017-07-11 Revised:2017-07-11 Online:2018-11-15 Published:2018-11-09
  • Contact: LI Bai-chun
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Abstract:

A new method for the identification of milling force coefficients is proposed for the prediction of the milling forces in multi-axis milling with ball-end cutter. Firstly, the shearing coefficients of milling forces are fitted with multiple order polynomial function of axial position angle, the identification model is derived based on average milling forces as well as the milling force model of multi-axis ball-end-cutter milling. Secondly, the experiment plan of multiple group slot milling for milling coefficient identification is presented, in which the groups are distinguished from each other by varying the angle between the cutter axis and the work piece surface in the slot milling. This experiment is used to ensure the identified coefficients contain the effect factor of different cutter postures. Finally, the proposed method is validated experimentally and the results show that the proposed method is better than that based on instantaneous milling forces in terms of anti-interference and identification precison.

Key words: ball-end milling cutter, multi-axis milling, milling force, coefficient of milling force, coefficient identification

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