Based on the simulated optimization and the experimental verification on hydromechanical deep drawing,the article introduces the design of the special hydraulic machine for hydromechanical deep drawing of automobile light reflector.Hydraulic is used to supply the deep drawing force of punch,the blank holder force and the cavity hydraulic pressure.PLC(programmable logic control) is applied to control the movement of the punch,the blankholder force and the cavity pressure,which can change in real time accordi...