In the light of growing global competition, organizations around the world today are constantly under pressure to produce high-quality products at an economical price. The integration of design and manufacturing activities into one common engineering effort has been recognized as a key strategy for survival and growth. Design for manufacturability (DFM) is an approach to design that fosters the simultaneous involvement of product design and process design. The implementation of the DFM approach requires the collaboration of both the design and manufacturing functions within an organization. Many reasons can be cited for the inability to implement the DFM approach effectively, including: lack of interdisciplinary expertise of designers; inflexibility in organizational structure, which hinders interaction between design and manufacturing functions; lack of manufacturing cost information at the design phase; and absence of integrated engineering effort intended to maximize functional and manufacturability objectives. The purpose of this research is to show how expert systems methodology could be used to provide manufacturability expertise during the design phase of a product. An object- and rule-based expert system has been developed that has the capability: (1) to make process selection decisions based on a set of design and production parameters to achieve cost-effective manufacture; and (2) to estimate manufacturing cost based on the identified processes. The expertise for primary process selection is developed for casting and forging processes. The specialized processes considered are die casting, investment casting, sand casting, precision forging, open die forging and conventional die forging. The processes considered for secondary process selection are end milling and drilling. The cost estimation expertise is developed for the die casting process, the milling and drilling operations, and the manual assembly operations. The results obtained from the application of the expert system suggest that the use of expert systems methodology is a feasible method for implementing the DFM approach.
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References
Adler, R. E. and Ishii, K. (1989) DAISIE: Designer's aid for simultaneous engineering, in Proceedings of the 1989 ASME International Computers in Engineering Conference and Exposition, Riley, D. R. and Cokonis, S. T. J. (eds), ASME, New York, pp. 19–26.
Andreasen, M. M., Kahler, S. and Lund, T. (1983) Design for Assembly, IFS Publications, Bedford, pp. 95–127.
Apgar, H. E. and Daschbach, J. M. (1987) Analysis of design through parametric cost estimation techniques, in Proceedings of the 1987 International Conference on Engineering Design, Eder, W. E. (ed.), ASME, New York, pp. 759–766.
Billatos, S. B. (1988) Guidelines for product design, process selection and manufacturability, in Proceedings of Manufacturing International '88—Symposium on Manufacturing Systems—Design, Integration and Control, Chryssolouris, G., von Turkovich, R. and Francis, P. (eds), ASME, New York, pp. 129–136.
Boothroyd, G. (1988) Estimating costs at an early stage. American Machinist, August.
Boothroyd, G. and Dewhurst, P. (1983) Design for Assembly — A Designer's Handbook, Department of Mechanical Engineering, University of Massachusetts, Amherst, p. 4.
Boothroyd, G. and Dewhurst, P. (1988) Product design for manufacture and assembly. Manufacturing Engineering, 100, 42.
Boothroyd, G. and Reynolds, C. (1989) Approximate cost estimates for typical turned parts. Journal of Manufacturing Systems 8(3), 191.
Colton, J. S. and Dascanio, J. L. (1991) An integrated, intelligent design environment. Engineering with Computers, 7, 11–22.
Dean Jr., J. W. and Susman, G. I. (1989) Organizing for manufacturable design. Harvard Business Review, 67, 28–36.
Dewhurst, P. (1988) Cutting assembly costs with molded parts. Machine Design, July.
Dewhurst, P. and Boothroyd, G. (1987) Early cost estimating in product design, in Proceedings of Second International Conference on Product Design for Manufacture and Assembly, Boothroyd, G., Dewhurst, P. and Huthwaite, B. (eds), Newport, pp. 1–15.
Dieter, G. E. (1983) Engineering Design — A Materials and Processing Approach, McGraw-Hill, New York, p. 166.
Dussault, H. B. (1983) The evolution and practical applications of failure modes and effects analyses, Report Number RADC-TR-83–72, Rome Air Development Center, Griffiss Airforce Base, New York, p. v.
Dwivedi, S. N. and Klein, B. R. (1986) Design for manufacturability makes dollars and sense. CIM Review, 3, 58.
Harig, H. (1976) Estimating Stamping Dies, Harig Educational Systems, Philadelphia, PA.
Huthwaite, B. (1989a) Manufacturing Competitiveness and Quality by Design, ICD/FOCUS Method, Institute for Competitive Design, Rochester.
Huthwaite, B. (1989b) Design for Competitiveness, Institute for Competitive Design, Rochester.
ICAD (Intelligent CAD), ICAD Inc., Cambridge, MA.
Ishii, K. (1990) The role of computers in simultaneous engineering, in Proceedings of the 1990 ASME International Computers in Engineering Conference and Exposition, Kinzel, G. L. and Rohde, S. M. (eds), ASME, New York, pp. 217–224.
Knight, W. A. and Poli, C. (1985) A systematic approach to forging design. Machine Design, 57, 94–99.
London, P., Hankins, B., Sapossnek, M. and Luby, S. (1987) The cost and manufacturability expert: a customizable expert system, in Proceedings of the 1987 ASME International Computers in Engineering Conference and Exhibition, Raghavan, R. and Cokonis, T. J. (eds), ASME, New York, pp. 125–129.
Matthews, L. M. (1983) Estimating Manufacturing Costs, McGraw-Hill, New York.
Meerbaum, M. I., Capozzi, T. J. and Aguilar, F. (1987) Object-oriented programming for flexible automated mechanical design, in Proceedings of the 1987 ASME International Computers in Engineering Conference and Exhibition, Raghavan, R. and Cokonis, T. J. (eds), ASME, New York, pp. 137–141.
Miller, G. S. and Colton, J. S. (1990) The complementary roles of expert systems and database management systems in a design for manufacture environment, in Advances in Integrated Product Design and Manufacturing, Cohen, P. H. and Joshi, S. B. (eds), ASME, New York, pp. 39–51.
Miyakawa, S. and Ohashi, T. (1986) The Hitachi assemblability evaluation method (AEM), in Proceedings of the First International Conference on Product Design for Assembly, Boothroyd, G., Dewhurst, P. and Huthwaite, B. (eds), Newport, pp. 1–13.
Myers, W. L., Dixon, J. R. and Simmons, M. K. (1987) Computer analysis of mechanical assemblies from a CAD database: manual handling times, in Proceedings of the 1987 ASME International Computers in Engineering Conference and Exhibition, Raghavan, R. and Cokonis, T. J. (eds), ASME, New York, pp. 167–172.
Neuron Data (1988) NEXPERT OBJECT Fundamentals, Version 1.1, Neuron Data, Palo Alto.
Niebel, B. W. and Draper, A. B. (1974) Product Design and Process Engineering, McGraw-Hill, New York, pp. 296–409.
Poli, C., Fenoglio, F. and Shunmugasundaram, S. (1991) Choosing the most cost effective manufacturing process — injection molding versus die casting. Concurrent Engineering, 1, 31–38.
Quinlan, J. C. (1988) Make better estimates on your computer. Tooling and Production, October.
Sprague, W. R. (1989) Design for manufacturability: culture, process and tools for leadership, in Proceedings of the 1989 International Industrial Engineering Conference and Societies' Manufacturing and Productivity Symposium, Institute of Industrial Engineers, p. 672.
Stoll, H. W. (1988) Design for manufacture, in Tool and Manufacturing Engineers Handbook — Volume V Manufacturing Management, Veillux, R. F. and Petro, L. W. (eds), Society of Mechanical Engineers, Dearborn, p. 9.
Taguchi, G. and Yuin, W. (1979) Introduction to Off-line Quality Control, Central Japan Quality Control Association, Nagaya, Japan.
Ulrich, K. T. and Fine, C. H. (1990) Cost estimation tools to support product design, in Proceedings of Manufacturing International '90, Mason, J., Bisgaard, S., Lee, J. and O'Brien, K. (eds), ASME, New York, pp. 19–25.
CAD/CIM ALERT (1987) User Survey Results, Proceedings of the Conference on Design for Manufacturability: Getting it Right the First Time, Chestnut Hill, pp. 5.1–5.7.
Venkatachalam, A. R. (1990) A knowledge-based approach to design for manufacturability, Ph.D. Dissertation, The University of Alabama.
Whitney, D. E. et al. (1988) The strategic approach to product design, in Design and Analysis of Integrated Manufacturing Systems, Compton, W. D. (ed.), National Academy Press.
Winchell, W. (1989) Realistic Cost Estimating for Manufacturing (2nd edn), SME Publications, Dearborn, MI.
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Venkatachalam, A.R., Mellichamp, J.M. & Miller, D.M. A knowledge-based approach to design for manufacturability. J Intell Manuf 4, 355–366 (1993). https://doi.org/10.1007/BF00123780
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DOI: https://doi.org/10.1007/BF00123780