Optimization and life prediction of forging die bias load for front axle of 80MN electric screw press based on transient dynamics analysis

Taking a commercial vehicle front axle forging die holder structure as the research object, transient dynamics analysis is carried out to study the phenomenon of bias load generated by forging in 80MN electric screw press. Simulation results show that the original under die both sides of the vertex stress distribution gap of 9.3 times, die life of 4758 times, the emergence of local damage, change the location of the mold cavity center and the stress concentration area, when the offset amount of 5mm, the die both sides of the apex of the maximum strain ratio of stress is 7.61, improve the life of the die for 5781 times, when the offset amount of 10mm, die both sides of the apex of the maximum strain ratio of stress is 5.58, the improved die life of 6371 times, when the offset is 15mm, the maximum strain ratio of the two sides of the die apex stress is 4.75, the improved die life of 7073 times, at this time, the mold cavity “fist” part of the stress does not appear to penetrate to the mold itself, the effect is better, the transient dynamics of partial load analysis and Optimization of electric screw press forging production has a certain significance.