Hydraulic Die Forming Discussion Group
Re: Comparison of two draws
Lee Marshall
lmarshal@bonnydoonengineering.com
On the inversion punch, I think that it is time to try adding a top plate to the assembly. This would serve the same function as the top plate for the MDS. If you took the 2-1/2" die ring, placed it around the punch and left it loose until the flange on the drawn cup gets up toward the top, and then used long bolts to secure the top plate to the bottom, you could provide some additional control on the metal as it starts to slide over the top. I think that it might reduce the amount of wrinkling.Lee
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Thu May 30
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