Punch Flanging Technology for Aluminum Alloy Plate-wheels Rolled Lip Forming

摘要

Rolled lip is needed to enhance intensity, rigidity and aesthetic feeling of aluminium alloy plate-wheels. The exacting requirements of rolled lip make the forming technology complex. And the forming process is difficult to control. Punch flanging technology adopted to form rolled lip of aluminium alloy plate-wheels was researched and simulated. 3-D elastic-plastic finite element models were constructed and appropriate boundary conditions were given out. The reasons for edge collapse, conner collapse and out of tolerance of run-out in end face are analysed. The results show that rolled lip of aluminium alloy plate-wheels with good forming quality can be formed by one time darwing and 30°-60°-90° three times flanging technology.