Abstract
To reduce the cost of manufacturing systems, many studies of cost minimization have been performed. Since tolerance design significantly affects the manufacturers’ cost, the optimization of cost-tolerance allocation will be an important issue for reducing these costs. Costs incurred in a product life-cycle include manufacturing cost and quality loss. However, most cost-tolerance optimization models frequently ignore the concept of quality loss and may not lead to an accurate analysis of the tolerance. Until now, process capability analysis has been the tool used to evaluate the adequacy of a production tool in meeting a quality target. Hence, the concept of process capability analysis should be included into the cost-tolerance optimization model. In this study, a flexible cost-tolerance optimization model will be constructed by integrating the process capability index into the product life-cycle cost function. The constructed cost-tolerance optimization model simultaneously considers the manufacturing cost of the components, the process capability of the manufacturing operations, and the quality loss of products. The decision-maker can apply the proposed cost-tolerance optimization model to determine a reasonable tolerance with minimum total cost including consideration of the process capability .
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References
Phadke MS (1989) Quality engineering using robust design. Prentice-Hall, New York
Ngoi BKA, Fang SL (1993) Computer aided tolerance charting. Int J Prod Res 8:1939–1954
Ngoi BKA, Tan CK (1995) Computer-aided tolerance charting – a ‘black box’ approach. Int J Prod Res 33(4):1117–1134
Irani SA, Mittal RO, Lehtihet EA (1989) Tolerance chart optimization. Int J Prod Res 9:1931–1952
Ngoi BKA, Seng MSM (1996) Tolerance synthesis adopting a nonlinear programming approach. Int J Adv Manuf Technol 11:387–393
Nigam SD, Turner JU (1995) Review of statistical approaches to tolerance analysis. Comput Aided Des 1:6–15
Kusiak A, Feng CX (1995) Deterministic tolerance synthesis: a comparative study. Comput Aided Des 10:759–768
Zhang C, Wang HP (1993) Optimal process sequence selection and manufacturing tolerance allocation. J Des Manuf 3:135–146
Malek LA, Asadathorm N (1994) Process and design tolerance in relation to manufacturing cost: a review and extension. Eng Econ 1:73–100
Cheng BW, Maghsoodloo S (1995) Optimization of mechanical assembly tolerances by incorporating Taguchi’s quality loss function. J Manuf Syst 4:416–421
Wei CC, Lee YC (1995) Determining the process tolerances based on the manufacturing process capability. Int J Adv Manuf Technol 6:416–421
Spotts MF (1973) Allocation of tolerance to minimize cost of assembly. J Eng Ind 3:762–764
Srinivasan V, O’Conner MA (1994) On interpreting statistical tolerance. Manuf Rev 4:304–311
Chen KS, Pearn WL (1997) An application of non-normal process capability indices. Qual Reliab Eng Int 13:335–360
Nagarwala MY (1995) A slope-based method for least cost tolerance allocation. Concurrent Eng 4:319–328
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Hsieh, KL. The study of cost-tolerance model by incorporating process capability index into product lifecycle cost. Int J Adv Manuf Technol 28, 638–642 (2006). https://doi.org/10.1007/s00170-004-2385-z
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DOI: https://doi.org/10.1007/s00170-004-2385-z