基于分段排样的铁芯迭片混合下料优化算法

分段排样方式用于大型发电机定子、转子的圆形和扇形两种迭片的下料.在下料排样图中,一根条带所布局的片型和尺寸必须相同,最多可出现3排迭片.为了简化切割工艺,板材中两个段的条带方向相同,且同一段中的条带长度相同.提出一种生成两段式的混合排样算法,混合的迭片包括圆片和扇片.提出扇片的转置布局,扇片在条带中有竖向放置与横向放置...

Optimization algorithm on mixed blanking of iron core lamination based on segmented layout

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.