A. Subash Babu Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, India
Keywords
Agile production, Make-to-order manufacturing, Systems development
Introduction
Manufacturing firms which deal with products that are made-to-order, fall under the Abstract category of intermittent production systems. This paper relates to make-toIntermittent production systems are geared order (MTO) manufacturing envirto produce in batches or small lots. These onment. Initially, the various systems may be of two types depending on issues of concern and problems encountered in relation to typical the length of the manufacturing cycle time. MTO systems are presented to These are short cycle job shops and long emphasize why agility is required in such systems. The need to have cycle job shops. The job shops have also been classified as machine limited shops and better performance measures is discussed. How some of the prolabour limited shops. These firms typically blems related to typical MTO do not hold finished goods inventory. After systems were dealt with in the the customer order is received, design and past is discussed, by highlighting manufacturing activities will be started and the salient features of some selected contributions made tothe lead time required to complete the types wards enhancing agility in MTO of jobs is high. Typically made-to-order and systems. An outline of the system engineered-to-order products fall in this capresently being developed by the tegory. These types of production environauthor for concurrent and integrated management of MTO manments are characterised by functional layout ufacturing organisations, which is of the equipment, and high flexibility of the conceived mainly as an agile production facilities to cater for a wide range management system for MTO enof products. Each product is unique in terms vironment, is also presented. of design,
References: Adshed, N.S. and Price, D.H.R. (1988), ``Adaptive scheduling: the use of dynamic due dates to accommodate demands variance in a make to stock shop ' ', International Journal of Production Research, Vol. 26 No. 7, pp. 1241-58. Agarwal, A., Harhalakis, G., Minis, I. and Nagi, R. (1996), ``Just-in-time production of large assemblies ' ', IIE Transactions, Vol. 28, pp. 65367. Baker, K.R. and Bertrand, T.W.M. (1981), ``An investigation of due date assignment rules with constrained tightness ' ', Journal of Operations Management, Vol. 1 No. 3, pp. 109-20. Browne, J. and Davis, B.J. (1984), ``The phased release of batches into a job shop ' ', International Journal of Operations & Production Management, Vol. 4, pp. 16-27. Garrity, C.R. (1993), ``Performance measurement in the engineer to order environment ' ', Proceedings of APICS Conference, San Antonio, pp. 196-8. Gelders, L.F. and Van Wassenhove, L.N. (1982), ``Hierarchical integration in production planning, theory and practice ' ', Journal of Operations Management, Vol. 3 No. 1, pp. 2735. Gunasekaran, A. (1998), ``Agile manufacturing enablers and an implementation framework ' ', International Journal of Production Research, Vol. 36 No. 3, pp. 1223-47. Harhalakis, G. (1989), ``The use of project scheduling for the manufacture of custom made products ' ', Advances in Project Scheduling, Elsevier Publishers, Amsterdam. Henry, L.C. and Kingsman, B.G. (1989), ``Production planning systems and their applicability to make-to-order companies ' ', European Journal of Operations Research, Vol. 40, pp. 115. Kingsman, B.G., Tatsiopoulos, I.P. and Henry, L.C. (1989), ``A survival methodology for managing manufacturing leadtimes in maketo-order companies ' ', European Journal of Operations Research, Vol. 40, pp. 196-209. Lee, K.I., Kang, M. and Park, J.H. (1996), ``A collaborative scheduling system for make-toorder manufacturing ' ', Annals of CIRP, Vol. 45 No. 1, pp. 461-4. Mather, H. and Plossl, G. (1978), ``Priority fixation versus throughput planning ' ', Production and Inventory Management, Vol. 19 (3rd Qtr), pp. 27-51. Melnyk, S.A. and Ragatz, G.L. (1989), ``Order review/release: research issues and perspectives ' ', International Journal of Production Research, Vol. 27, pp. 1081-96. Montgomery, J.C. and Levine, L.O. (Eds) (1996), The Transition to Agile Manufacturing ± Staying Flexible for Competitive Advantage, ASQC Quality Press, USA. Plossl, G.W. and Wight, O.W. (1973), ``Capacity planning and control ' ', Production and Inventory Management, Vol. 14 (3rd Qtr), pp. 31-67. Ragatz, G.L. and Mabert, V.A. (1984), ``A framework for the study of due date management in job shops ' ', International Journal of Production Research, Vol. 22 No. 4, pp. 685-95. Shimayashiro, S., Isoda, K. and Awane, H. (1984), ``Input scheduling and load balance control for a job shop ' ', International Journal of Production Research, Vol. 22, pp. 597-605. Tatsiopoulos, I.P. and Kingsman, B.G. (1983), ``Lead time management ' ', European Journal of Operations Research, Vol. 34, pp. 351-8. Thomas, G. (1992), ``A new way to configure `toorder ' products, bottom-up/rules-based structuring ' ', Proceedings of APICS Conference, Montreal, pp. 465-9. [ 29 ]