Study on Concurrent Deign in Forming Die for Its Life

As a research hot point in advanced manufacture techniques, concurrent engineering (CE) has been applied in aeronautics, automobile, mechanical engineering. Forming die is an important technical equipment in auto-body manufacturing. Now, design life of forming die is aimed to make whole die’s using life to achieve or exceed design standard. The result is that whole die has to be scraped due to few parts’ disabled, but most parts could be used for a long time. It will cause a large amount of waste. In order to solve the problem, concurrent design in forming die for its life is researched in the paper. The general mathematical expression is put forward to define the relation of whole die and parts based on Lebesgue measure and Lebesgue integral in real variable function. Regarding the die used in auto-body manufacturing as a research object, the idea of concurrent design for die’s life is discussed in autodie field for the first time. With the analysis of the design process and information flow of auto-die, the system framework of auto-die concurrent design for its life is built up. As a new method in auto-die design, it will promote the technical development of auto-die and decrease the cost. At the same time, it can be employed in research of mechanical concurrent CAD for life.