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Abstract：
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The segmented layout method is used for the blanking of round and sector laminations for stator and rotor in large generators. However, in the layout diagram of blanking, the lamination shape and size of a strip must be the same, and there can be up to three rows of laminations. In order to simplify the cutting process, the strip direction of two sections in the sheet is the same, and the strip length in the same section is the same. Therefore, a two-stage mixed layout algorithm was proposed, and the mixed laminations included round lamination and sector lamination. Then, the transposed layout of the sector lamination was proposed, and the sector laminations were placed vertically or horizontally in the strip. Furthermore, the specification length was used as the selection range of breakpoints, and the selection of elements in the specification length set was related to the step length of lamination. According to the optimal breakpoint method, the division of the optimal section in the whole sheet was determined, and then the optimal layout of strips in each section was determined by dynamic programming. Finally, the final blanking scheme was solved by the sequential value modification heuristic algorithm. Experimental results show that the algorithm in this paper significantly improves the utilization rate of materials used to produce laminations, and the production cost of enterprises reduces.
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Funds：
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国家自然科学基金资助项目(71371058);广西自然科学基金资助项目(2020GXNSFAA159090)
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AuthorIntro：
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陈燕（1975-），女，博士，教授，E-mail：gxcy@foxmail.com；通讯作者：胡小春（1974-），男，硕士，副教授，E-mail：huxch999@163.com
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Reference：
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