Journal
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume 120, Issue 1-2, Pages 659-668Publisher
SPRINGER LONDON LTD
DOI: 10.1007/s00170-022-08777-1
Keywords
Micro-milling; Cutting force; Tool runout; Size effect; Tool wear
Funding
- National Natural Science Foundation of China [51905360]
- China Postdoctoral Science Foundation [2020M681699]
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In this study, a comprehensive micro-milling force model is derived, considering the effects of tool runout, cutting edge radius, and tool wear on cutting force. Experimental results show that the proposed model is efficient in predicting the nonlinear cutting force in micro-milling.
Tool runout, cutting edge radius-size effect, and tool wear have significant impacts on the cutting force of micro-milling. In order to predict the micro-milling force and the related cutting performance, it is necessary to establish a cutting force model including tool runout, cutting edge radius, and tool wear. In this study, an instantaneous uncut chip thickness (IUCT) model considering tool runout, a nonlinear shear/ploughing coefficient model including cutting-edge radius, and a friction force coefficient model embedded with flank wear width are respectively constructed. By integrating the IUCT, the nonlinear shear/ploughing coefficient and the friction force coefficient, a comprehensive micro-milling force model including tool runout, cutting edge radius, and tool wear is derived. Experiment results show that the proposed comprehensive model is efficient to predict the nonlinear cutting force of micro-milling with variable tool runout, cutting edge radius, and tool wear.
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