The local position of the blank holder corresponding to the part appeared wrinkles in the deep drawing process,which affected the service life of the blank holder and the die.The theoreti-cal blank holder force could not make the blank holder and the upper half of die close stably,re-sulting in a large difference between the material inflow value and the theoretical value.Based on the analysis results of CAE software,the wrinkling area was pre-judged,and the wrinkling problem was solved before die processing.
NETL
NSTL
维普
万方数据
