| Summary: | 碩士 === 中原大學 === 工業與系統工程研究所 === 97 === The main key factors of Toyota Production System (TPS) are just-in-time (JIT) and stop-reject automation (Jidoka) to deploy the rational production system. The fundamental spirit of TPS is to pursue the continuously improving process and eliminating wastes. Through the TPS, the company may enhance productivity, cost down, enhance effiveness, and improve quality, then establishment of various and small-lot production model. Utimately, the TPS way makes company increase profit and create competitive advantage. The automobile industry acts the leader company in manufacturing industry, since the numerous parts and in particular the moldings have a great impact on safety and structure.
The automobile factory asks the supplier of molding companues to provide the high quality, short cycle time and flexibility. For an automobile molding company, how to cost dowan and meet the requirements simultaneously from raw material to finished goods is a key to maintain profit. Therefore, many of automobile molding companies implemented the TPS to construct the competitive advantage. This research studies the key factors of implementing TPS for automobile moldilng industry in Taiwan by questionnaire survey. By literature review, this research summarized the three key factors (secondary factors) of implementing TPS by using analytical hierarchy process (AHP): JIT (productivity, quality, inventory and delivery), Jidoka (manufacturing flexibility and management system), and management change (identification and commitment, culture and management system). Processing the questionnaire through six different companies in Taiwan, the results showed that the most important key factor of implementing TPS is management change, secondary important factors is high-level identification and commitment. It showed that the key successful factor of TPS is implementing top-down type, and provide the organizational commitment and essential resources from high-level management. For the operation level, the identification and commitment of business unit supervisors is most important sub-factor, since it will implement the project activieies and achieve the change benefit.
Keywords: Toyota production system, automobile moldilng industry, analytical hierarchy process
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