期刊
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
卷 55, 期 15, 页码 4261-4282出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207543.2016.1232496
关键词
sculptured surface machining; multi-criteria optimisation; tool path; smooth cutter motion; flat-end cutter
资金
- National Natural Science Foundation of China [51325502]
- Science & Technology Commission of Shanghai Municipality [13JC1408400, 14111104801]
A method of generating optimal tool paths for sculptured surface machining with flat-end cutters is presented in this paper. The inclination and tilt angles, as well as the feed directions of the cutter at each cutter contact point on a machining path are optimised as a whole so that the machining width of the tool path can be as large as possible, and concerns such as smooth cutter motion, gouging avoidance, scallop height and machining widths overlap are also considered when calculating a path. A multi-criteria tool path optimisation model is introduced, and it is converted into a single objective optimisation with the weighted sum method. The Differential Evolution (DE) algorithm is suitable for solving this highly non-linear problem. However, the searching process of the DE algorithm may be trapped in local minima due to large number of design variables. Therefore, an algorithm combining the DE algorithm and the sequence linear programming algorithm is developed to solve this optimisation model. The proposed method is applied to two freeform surfaces to illustrate its effectiveness.
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