Method of the punching press part rebound complex-curved with magnetic pulse formation Collaborative Control with rupture

Method of the punching press part rebound complex-curved with magnetic pulse formation Collaborative Control with rupture

  • CN 108,057,769 A
  • Filed: 11/30/2017
  • Published: 05/22/2018
  • Est. Priority Date: 11/30/2017
  • Status: Active Application
First Claim
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1. method of the punching press part rebound complex-curved with magnetic pulse formation Collaborative Control with rupture, which is characterized in that including followingStep:

  • 1) according to the structure feature of complex-curved part and to rupturing the magnetic field impulse electromagnetic force field demand with springback control, in punching pressIn the punch-pin and cavity plate of shaping dies, the position for plate easily occurring respectively rebound and rupture is embedded in different structure, shape in advanceWith the shaping discharge coil of the number of turn;

    2) plate to be formed is placed on cavity plate and is accurately positioned, plate is then pushed down by the blank holder of press forming dieEdge, punch-pin forcing press effect under move downward, punch-pin starts to contact andante of going forward side by side with plate after moving to a distancePart it is stamping;

    3) before the molding of punch-pin and cavity plate, for Forming depth is big, drawing requires high position, stamping while using pointThe multiple boosting discharge coils electric discharge not being arranged on cavity plate and blank holder, on the big position push plate of Forming depthMaterial flows into cavity plate, so as to reduce the tensile stress in skew wall area;

    4) punch-pin is with after cavity plate molding, pressurize is carried out to plate, in pressure maintaining period, discharges according to pre-set magnetic field impulse suitableSequence and discharge energy discharge to the plate after stamping by shaping discharge coil, using magnetic pulse formation improve intoThe shape limit and the resultant effect for inhibiting rebound, so as to fulfill the Form springback of complex-curved part and the Collaborative Control of rupture.

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