Abstract
Hot stamping technology of high strength steel creates new possibilities for vehicle manufacturers in promoting safety and fuel efficiency. The proportion of hot stamping parts in vehicles increases each year, and there are already hundreds of different types of hot stamping lines throughout the world. However, few studies regarding modeling of hot stamping process procedure have been reported, nor have there been studies regarding cooperative scheduling of manufacturing units (including heating units, transferring units, and forming units), or the relationship between productivity and energy consumption. With the shortening of the vehicle life cycle, auto parts manufacturing must be flexible for multiple types and small batches to meet the challenges of the market. In this paper, a model of the hot stamping process procedure based on finite state machine is established, then the model is adapted for the procedure control of a hot stamping line, consisting of multi-chamber furnaces, linear conveying robots, and a mechanical servo press. The cooperative scheduling of various manufacturing units, especially the method which matches multiple heating chambers with a single forming die, is focused on. Finally, a hot stamping line with multi-chamber furnaces is designed and implemented, and the analysis of its production sequence, energy consumption, and delivery cycles is performed. The results show that with the new modeling method of hot stamping process based on finite state machine, the new developed hot stamping line is capable of multiple production objectives and flexible configuration in accordance with production and delivery periods. This active configuration aids in extending equipment life and reduce energy consumption. The modeling method expands production models for hot stamping, from the mass production model to multiple types and small batches production model.
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Wang, L., Zhu, B., Wang, Q. et al. Modeling of hot stamping process procedure based on finite state machine (FSM). Int J Adv Manuf Technol 89, 857–868 (2017). https://doi.org/10.1007/s00170-016-9097-z
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DOI: https://doi.org/10.1007/s00170-016-9097-z