Abstract
Cost estimation is important in Design for Manufacture. Cost can be used to quantify the manufacturability of a design. Cost estimation tools that relate manufacturing cost to design features must guide the designer in identifying cost critical aspects of a design. Heavy earthmoving equipment, such as dragline and front-end loader buckets, are peculiar products that require special consideration in formulating cost estimation models. This paper presents cost estimation models for two specific aspects of manufacturing this type of equipment, i.e. tack-welding (preliminary assembly) and welding (completing the assembly). The models focus on the time required to complete these operations and relate these times to design features. The paper proposes new models for the estimation of non-arc times, which are typically about 66% of the tack-welding and welding operations. The accuracy of the models is demonstrated by their application to two products.
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References
Basson, A.H. and Schuster, H.R., “A Procedure and Software Tool for Manufacturability Assessment during Embodiment Design”, Proceedings of the GIRT’ STC Design Seminar on New Tools and Workflows for Product Development, Berlin, May 1998, pp. 37–48.
Boothroyd Dewhurst Inc., Design for Assembly, Software Release 7.1, Cost and Product Structure Analysis, Boothroyd Dewhurst, Inc., Wakefield, USA, 1994.
Boothroyd, G., Dewhurst, P., Knight, W., Product Design for Manufacture and Assembly, Marcel Dekker Inc., New York, 1994.
Bruckner, J. and Ehrlenspiel, K., “Development of Cost Information Tools for the Designers, Example — Gear Drives” Design for Manufacturability, Vol. 52, ASME, 1993, pp. 111–115.
Cary, J., Modern Welding Technology, Cost of Welding, Prentice Hall, 1992.
De Swardt, Design for Manufacture Through Fabrication: A Manufacturing Time and Cost Estimation Model for Large Fabricated Assemblies, M.Eng. thesis, University of Stellenbosch, 1998.
Farkas, J. and Jârmai K., “Fabrication cost calculations and minimum cost design of welded structural parts” Welding in the World, Vol. 35, No. 6, Elsevier, 1995, pp. 400–406.
Ferreirinha, P., Hubka, V. and Eder, W.E., “Early Cost Calculation: Reliable Calculation, not just Estimation” Design for Manufacturability, Vol. 52, ASME, 1993, pp. 97–104.
Helander M.G., “Cognitive and Sociotechnical Issues in Design for Manufacturability” The international Journal of Human Factors in Manufacturing, Vol. 4 (4), 1994, pp 375–390.
Hundal, M.S., “Rules and Models for Low-Cost Design, Design for Manufacturability” ASME DE, Vol. 52, 1993.
Hundal, M.S., “Time and Cost Driven Design, Design for Manufacturability” ASME DE, Vol. 81, 1995.
Kroll, 1992] Kroll E., “Towards using cost estimates to guide concurrent design processes” Concurrent Engineering,ASME, Vol. 59, 1992, pp. 281–293.
Lincoln Electric, The Procedure Handbook of Arc Welding, The Lincoln Electric Company, Ohio, 1994.
Maree, W.G. Design for Fabrication: A Cost Estimation Model for Small Production Volumes, M.Eng. thesis, University of Stellenbosch, 1997.
Maree, W.G. and Basson, A.H. “Design for Fabrication Early Cost Estimation for Small Production Volume”, CIRP Proceedings — Manufacturing Systems, Vol. 26, No. 2, 1997.
Nordhoff W.A., Machine-Shop Estimating, 2nd ed., McGraw-Hill, New York, 1960.
Ostwald P. F., AM Cost Estimator, 4th ed., Penton Publishing, Cleveland, 1988.
Schreve, K 1997, Cost Estimating Welded Assemblies Produced in Batches, M.Eng. thesis, University of Stellenbosch, 1997.
Schreve, K., Schuster, H.R. and Basson, A.H. “Manufacturing Cost Estimation during Design of Fabricated Parts” in Proceedings of the Engineering Design Conference ‘88 on Design Reuse, Brunel Univ., UK, 1998, pp. 437–444.
Sheldon D.F., Huang G.Q., and Perks R., “Design for Cost: Past Experience and Recent Development” Journal of Engineering Design, Vol. 2, No. 2, 1991, pp. 127–140.
Sheldon D.F., Huang G.Q., and Perks R., “Specification and Development of Cost-Estimating Databases for Engineering Design” Design for Manufacturability, Vol. 52, 1993, pp. 91–96.
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© 1999 Springer Science+Business Media Dordrecht
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Basson, A.H., de Swardt, A.V. (1999). Estimation of Tack-Welding and Welding Cost during Design of Heavy Earthmoving Equipment. In: Kals, H., van Houten, F. (eds) Integration of Process Knowledge into Design Support Systems. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1901-8_27
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DOI: https://doi.org/10.1007/978-94-017-1901-8_27
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5199-8
Online ISBN: 978-94-017-1901-8
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