STRETCHING DIE MINIMISING SPECIMEN STRETCHING FORCE AT BENDING WITH STRETCHING OVER DIE WORKING PART

摘要

FIELD: process engineering.;SUBSTANCE: invention relates to metal forming, particularly, to stretching dies. Stretching die comprises bed and working part composed by rolling bearings with outer races following the stretching die working part forming surface over which blank bending and stretching are performed.;EFFECT: lower costs, higher precision.;2 dwg