Abstract
The success in developing a metal forming process is relied heavily on the design of a preform to reduce the final forming load at the final step. The design of the preform is considered a big burden of a process designer. Currently, the automotive companies try to design components which can cover a wide range of car models, but only changing a few dimensions to accommodate different models. However, each product is still considered a single product during the process design. Therefore, if only one preform can cover a variety of products, the process design could speed-up and gain more benefits in the production. In this research, a technique to design preform for various product models was proposed. The aim of this technique is to develop generalized common preforms by utilizing the same part configuration/shape but different dimensions in some areas to reduce the number of preform and process design time. This technique is composed of two steps: (a) classification of product groups and (b) determination of the common tool for producing the common parts. This technique was applied to the cold forging process to produce various models of automotive pulleys. The results show that the number of preforms was reduced by almost 70%, and the die changeover time was approximately saved by 75 min per shift (8 h/shift), and the capacity was gained by 1800 pieces per shift without generating any product defects.
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Nakeenopakun, N., Aue-u-lan, Y. A proposed Common Single-Die Exchange Technique (C-SDET) to enhance production of pulleys. Int J Adv Manuf Technol 107, 3625–3643 (2020). https://doi.org/10.1007/s00170-020-05267-0
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DOI: https://doi.org/10.1007/s00170-020-05267-0