期刊
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
卷 114, 期 -, 页码 120-131出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2016.05.010
关键词
Ploughing mechanism; Ploughing force coefficient; Cutting force model; Chatter stability; Stability lobe diagram (SLD); Process damping
资金
- National Natural Science Foundation of China [11272261, 11432011]
- Program for New Century Excellent Talents in University [NCET-12-0467]
Studies on ploughing mechanism were separately treated for static and dynamic cutting processes in the literature. In this paper, a generalized method, which is suitable for exploring the ploughing mechanism of both static and dynamic cuts, is presented by only using the static milling forces. Whether for static or dynamic cutting processes, a unified proportional form is used to express ploughing forces as function of the volume of the materials extruded under the clearance face of the tool, and the corresponding proportional scale is named ploughing force coefficient. To facilitate identifying the ploughing force coefficient, the total static milling force is decomposed into two parts, i.e. the shearing force component and the ploughing force component, and then the ploughing force coefficient is identified using the ploughing force component. It is observed that the relative error between the determined ploughing force coefficient and the one obtained by using dynamic signals in existing method is less than two percent. Besides, determination procedure is also specially developed to calibrate shear angle, shear stress and friction constant based on the separated shearing force component. Both static and dynamic milling tests are used to validate the proposed model. (C) 2016 Elsevier Ltd. All rights reserved.
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