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Design And Implementation Of Optimized Layout System For Transformer Silicon Steel Sheet

Posted on:2020-12-31Degree:MasterType:Thesis
Country:ChinaCandidate:J Z GongFull Text:PDF
GTID:2392330578460832Subject:Software engineering
Abstract/Summary:PDF Full Text Request
In many industries such as machinery manufacturing,garment production,glass,paper,and wood production,the problem of cutting is widely involved.In the industry of producing transformers,one of the important components of the transformer is the iron core of the transformer.The cost of manufacturing silicon core steel sheets accounts for about one-third of the total production cost.The material utilization rate of silicon steel sheets is important for the economic benefits of enterprises.Factors,related companies are paying more and more attention to how to improve the utilization rate of silicon steel sheet cutting.After in-depth research on a transformer manufacturer,we found that the core processing workshop is still in the process of manual experience calculation and layout planning,and the workshop is very weak in the management of surplus materials.In view of these problems in the process of material cutting in the enterprise workshop,combined with the actual production process,the idea of splicing the silicon steel sheets into strips according to the process requirements is proposed,and the demand for blanks is converted into strip requirements.Then the whole volume shear optimization layout algorithm is proposed to solve the problem of optimal layout of silicon steel coil blanking.The sequential heuristic method is used to solve the layout scheme.In the process of recursive solution layout,the value correction strategy is used to correct the strip value.To prevent the solution planning process from falling into local optimum,so as to obtain an optimal blanking plan.In view of the excessive pressure on the inventory management caused by the excessive non-standard residual material generated during the blanking process,the strategy of actively generating the standard residual material strip is proposed to standardize the residual material generation,and the standard residual is used preferentially in the blanking process.The thesis proposes a whole-volume shear optimization layout algorithm considering the residual material,recursively solves the constrained knapsack problem to obtain the layout method,and uses the sequential heuristic method to iteratively obtain the optimal layout scheme multiple times.The blanking algorithm gives priority to the use of stock surplus materials,which can effectively reduce the amount of surplus materials and reduce the pressure on inventory management for enterprises.Based on the proposed algorithm,the prototype of the optimized layout system is realized,and the effectiveness of the proposed algorithm is proved by experiments.The system is applied to the workshop production process to provide computer-assisted blanking function for production activities,instead of time-consuming and labor-intensive traditional manual layout,effectively improving material utilization can help enterprises save raw materials and strengthen residual materials inventory.The management help reduce the cost of human resources and activities.Thus,it has certain significance for reducing the production cost of enterprises and improving the level of enterprise information management.
Keywords/Search Tags:cutting stock problem, the transverse shear of the silicon steel sheet, using leftover, dynamic programming, knapsack algorithm
PDF Full Text Request
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