Progressive Stamping Simulation And Mold Design For Load Cell

Mold, as one of important foundation process equipment, plays a key role in every department of national economy. With high efficiency, high precision, high-life and other advantages, progressive die is widely used in the stamping production of various industries. To the quality of progressive die forming, the requirement needs to be higher. Thus the traditional progressive die design seldom can take the factors that affect forming precision into account comprehensively, resulting in mistakes of design and manufacturing, and ultimately part's accuracy declining.Load cell progressive die design involved forming theories, stamping process planning, layout design, product development size calculation, die structure design, product forming simulation, die material selection and many other key technologies. Based on the theory of progressive die stamping and numerical simulation and combined with a typical example of the load cell, dimensions of blank shape were obtained by one step inverse forming FEM. Then according to repeated numerical simulation analysis, the stamping process scheme of the progressive die was proposed, which involved 28 working steps including three drawing and two anti-drawing. Simultaneously on this basis a new progressive die carrier called cutting carrier was designed by simulation analysis and comparison. This carrier had small deformation during progressive die forming, which could improve feed accuracy significantly and forming precision of the progressive die, so it was more suitable for the forming of deep drawing progressive die. Using orthogonal experiment combined with finite element simulation, stamping process parameters of the load cell progressive die were optimized, such as the best lubricational conditions, binder force, punch speed, die gap and other parameters. Finally, the main die structure design was discussed, and the quick-change mold structure was investigated.The results and conclusions would provide certain guiding significance and reference value to the practical production.