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Predictive cutting force model for ductile-regime machining of brittle materials

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Abstract

Ductile-regime machining is a promising technique for processing brittle materials. Although it has been widely investigated, there are few studies on the cutting force in the ductile-regime machining of brittle materials. This paper proposes a predictive cutting force model for ductile-regime machining of brittle materials, with an integration of the elastic recovery of the workpiece on the tool flank face and three parts of material removal on the tool rake face, i.e., the plowing effect, the plastic deformation, and the brittle fracture. Using the predictive cutting force model, it was found that the cutting force caused by the brittle fracture takes a dominant place in the total cutting force in the cutting process. Groove cutting experiments were carried out on the MgF2 (100) crystal to validate the predictive cutting force model. The measured cutting forces showed good agreement with the predicted cutting forces. In addition, it was found that the fluctuation of the measured cutting force increases with the increase of the cutting force caused by the brittle fracture.

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Funding

This work was supported by the National Natural Science Foundation of China (No. 51405315) and the Laboratory of Precision Manufacturing Technology, CAEP (No. KF15002).

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Authors and Affiliations

  1. School of Manufacturing Science and Engineering, Sichuan University, Chengdu, 610065, China

    Weihai Huang, Deping Yu, Min Zhang, Qiaoshuang Cao & Jin Yao

Authors
  1. Weihai Huang
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  2. Deping Yu
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  3. Min Zhang
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  4. Qiaoshuang Cao
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  5. Jin Yao
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Correspondence to Deping Yu.

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Huang, W., Yu, D., Zhang, M. et al. Predictive cutting force model for ductile-regime machining of brittle materials. Int J Adv Manuf Technol 98, 781–790 (2018). https://doi.org/10.1007/s00170-018-2273-6

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  • DOI: https://doi.org/10.1007/s00170-018-2273-6

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