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    Haryana, India, for theexample component. The drawing of strip-layout generatedby the developed system is also in close agreement with theexperienced die designers.5. ConclusionResearch effort has been applied for automation of strip-layout design for sheet metal work on progressive die.Production rule-based expert system approach has been uti-lized for development of the proposed intelligent system.Production rules are coded in AutoLISP language to constructknowledge base of the system since it can be interfaced withAutoCAD for modeling of strip-layout. The system is capableto impart expert advices on the type of sheetmetal operationsrequired formanufacturing the part, sequencing of the opera-tions, selection of proper piloting scheme, number of stationsrequired and preferred staging of operations on progressivedie; and selection of suitable size of stock strip. Finally, basedon the outputs generated by the systemmodules, the systemiscapable to model the strip-layout automatically in the draw-ing editor of AutoCAD. The sample run of the system using an industrial sheet metal part has demonstrated the useful-ness of the system. The system is flexible and has cost ofimplementation as it can be operated on a PC having Auto-CAD software. The system is easily affordable by small andmedium size sheet metal industries.referencesAdachi, M., Inoue, K., Funayama, T., 1983. Integrated CAD systemfor progressive dies. Fujitsu Sci. Tech. J. 19 (2), 133–148.Chu, C.Y., Tor, S.B., Britton, G.A., 2004. A graph theoretic approachfor stamping operations sequencing.
    Proc. Inst. Mech. Eng.Part B: J. Eng. Manuf. 218, 467–471.Duffy, M.R., Sun, Q., 1991. Knowledge-based design of progressivestamping dies. J. Mater. Process. Technol. 28, 221–227.Kim, C., Park, Y.S., Kim, J.H., Choi, J.C., 2002. A study on thedevelopment of computer-aided process planning system forelectric product with bending and piercing operations. J.Mater. Process. Technol. 130–131, 626–631.Kumar, S., Singh, R., Sekhon, G.S., 2006. CCKBS: a componentcheck knowledge-based system for assessingmanufacturability of sheet metal parts. J. Mater. Process.Technol. 172, 64–69.Li, J.Y., Nee, A.Y.C., Cheok, B.T., 2002. Integrated feature-basedmodeling and process planning of bending operations inprogressive die design. Int. J. Adv. Manuf. Technol. 20,883–895.Nee, A.Y.C., 1984a. A heuristic algorithm for optimum layout ofmetal stamping blanks. Ann. CIRP 33, 317–320.Nee, A.Y.C., 1984b. Computer aided layout of metal stampingblanks. Proc. Inst. Mech. Eng., Part B: J. Eng. Manuf. 198 (10),187–194.Nee, A.Y.C., 1985. A micro-computer based blank layout solutionfor metal stamping. Sheet Met. Ind. 62 (3), 156–160.Prasad, Y.K.D.V., Somasundaram, S., 1992. CADDS: an automateddie design system for sheet metal blanking. Comput. Contr.Eng. J. 3, 185–191.Ridha, H., 2003. BLANKSOFT: a code for sheet metal blankingprocesses optimization. J. Mater. Process. Technol. 141,234–242.Schaffer, G., 1971. Computer designs progressive dies. Am.Machinist 22, 73–75.Singh, R., Sekhon, G.S., 2001. A low cost modeler for optimalstamping layouts for sheet metal operations. In: Proceedingsof the Ninth International Conference on Sheet Metal(She-Met 2001), Katholic University, Leuven, Belgium, April2–4, pp. 363–370.Tor, S.B., Britton, G.A., Zhang, W.Y., 2005. Development of anobject-oriented blackboard model for stamping processplanning in progressive die design. J. Intell. Manuf. 16,499–513.Venkata Rao, R., 2004. Evaluation of metal stamping layouts usingan analytic hierarchy process method. J. Mater. Process.Technol. 152, 71–76.
    钣金件级进模料条排样设计自动化
    摘要
    排样设计在级进模钣金件设计的规划阶段中是至关重要的一步。这主要依靠经验,优秀的排样设计很大一部分因素在于模具设计者的知识和技巧。本文介绍了一款排样设计自动处理的专业系统。该系统的开发使用人工智能的生产基于规则的专业系统方法(AI)。它由6个模块组成,在识别金属、排序、选择合适的导正方案、工位数以及级进模各阶段的工序、选择合适的送料板的尺寸的过程中能给用户提供专业的建议。最后,在AUTOCAD制图编辑器中通过导出其他模块的文件数据,系统能够完成料条排样的仿真。文章以一工业零部件为例介绍了系统柔性化、减少成本的优点。
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