Drawing method and apparatus

Details Drawing method and apparatus Drawing method and apparatus

B - Operations, Transporting

21

D

B21D 24/04 (2006.01) B21D 22/22 (2006.01)

Patent

CA 2181931

A drawing apparatus includes blank holder and an opposing die for holding a blank therebetween, and a punch for drawing the blank. The blank holder and the opposing die include respective blank holding surfaces in which beads, having at least a portion that varies in distance from a drawing profile, are formed. In a drawing method conducted using the apparatus, a blank holder is lowered to hold the blank between the blank holder and the opposing die, and then the blank holder is further lowered so that the held blank is drawn by the punch.

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