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Automobile axle housing is more complex geometry parts , it protects the internal main gear box , differential , axle parts assembly . At present , the main production methods for casting and stamping, welding automotive axle housing . The casting process manufacturing , materials and energy wasted ; stamping and welding process the weld quality is difficult to guarantee , material utilization is not high . Hydraulic bulging process can save materials and energy , to create a reasonable wall thickness distribution , higher strength and stiffness of parts and processes , high material utilization . Hydraulic bulging of a small automobile axle housing half - sliding , half sliding hydraulic bulging mold design ideas . The mold is divided into fixed block module and overall sliding module : fixed module will help prevent the emergence of flash , but also for the pickup ; integral sliding module can share most of the tube bulging force , reduce equipment tonnage. And the process scheme according to the determined design reduced diameter mold, pre- the bulge shaped die and final bulging mold . Finite element software ANSYS numerical simulations to reveal the necking process tube necking process of forming law ; selection of a suitable load path of the pre - bulging , the final bulging process numerical simulation , the stress strain , wall thickness, and the destruction of the observations , a the fillet transition portion of the mold cavity of tube forming , determine the shape of the mold structure and the lumen . The use of the necking die design , pre- bulging mold shaped mold , the end of inflation in the ordinary YA32-315 hydraulic press axle housing experiment , successfully produced a sample of the axle housing . This article by numerical simulation and experimental hydraulic bulging automobile axle housing , mold design , explore , and actual production to provide a basis for future automotive axle housing hydraulic bulging .
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