| Automotive sheet metal parts are characterized by simple, small, multi-varietiesand other features. The processing technology is mainly composed with shearing,blanking, punching and molding, which may easily produce large amount of leftovermaterial(LM).The material cost accounts for from60%to80%of the production costin stamping production. With the automotive sheet metal parts manufacturers graduallyinto micro-profits era, it has a great significance of optimizing LM management toreduce cost. At present, because of the traditional manual mode of LM management,having resulted the method of LM information collection are laggard, LM utilization isdifficult and unable to support the real-time optimization of the sheet metal designdepartment to blank, having caused the problems of low plank utilization rate, seriouswaste of LM resource, and increased production costs. Therefore, the automotive sheetmetal parts manufacturers urgently need a LM Optimal Utilization Support System(LMOUSS), which can support LM’s information real-time acquisition, LM optimalutilization, and the plate real-time optimization blanking, to improve the plankutilization rate, reduce the production cost, and improve the comprehensivecompetitiveness. According to the difficulties and demands of LM management ofautomotive sheet metal parts stamping workshop, combining with the advancedmanagement thoughts and ideas such as manufacturing execution system (MES),LMOUSS for automotive sheet metal parts stamping workshop was discussed andstudied.At first, based on the analysis of production process and manufacturing processcharacteristics of automotive sheet metal parts stamping workshop, the papersummarized the features of LM information. Then combining with the current situationof LM management and LM recycling demand, and considering the LM quality,utilization attribute, and geometric physical features comprehensively, arecycling-oriented LM information structure model for automotive sheet metal partsstamping workshop was constructed.According to the requirements of LMOUSS for automotive sheet metal partsstamping workshop, this paper proposed and studied the architecture and operationalmode of LMOUSS, which can support LM information real-time acquisition,integration management and optimal utilization. The architecture included two parts of structure system and function system. In addition, the key technology for systemimplementation were also studied, such as the LM information resources ontologymodeling and semantic description, as well as the LM utilization knowledge baseconstruction and LM utilization knowledge retrieval model based on domain ontology.At last, a LMOUSS for automotive sheet metal parts stamping workshop wasdesigned and developed based on the above research. And it has been successfullyapplied in an automotive parts manufacturer in Chongqing and good results wereobtained. |
PDF Full Text Request