Hydraulic Die Forming Discussion Group
Trouble in Giant Leaf Paradise

Dar Shelton
sheltech@webtv.net


Proportionally, the  leaf die is made very similar to small dies. But it's SO big that the leaf part tends to flop around out at the end of the hinge. The hinge is a lot more flexible than I thought it would be, and the dern thing shifts out of alignment more quickly than other dies.

As we all know, this can lead to part jamming, which can cause...  oh, I can't  bring myself to say it , not  i the same area as 'giant leaf die". But the leaf parts did start to jam. My heart did sink a little , but strangely I was calm and optomistic . Maybe it was because I wasn't all that surprised, maybe it was because I knew that not  
making leaves is not an option; whatever, I went about disassembling the forming module from the blanking die.

Then - this phase was after phases of  adjusting the alignment by peening the bottom of the hinge stopped preventing jams- I did the only thing you can in this situation (short of making a new die), I got out the B.F.H..  For a good half hour I pounded (and stretched my wrists) and pounded (and stretched) that die. Mostly on the edge of the inside/male punch part of the die, to stretch it outwards a bit and tighten up the clearance , and some strategic pummelling of the outer portion to tighten things in a directionally selective way. Only in the last year have I become pleased with my ability to 'rearrange' die areas seletively. It gets tricky : ya hit it one place to do one thing and it does something else to another area.

Anyway, I got the thing cutting again.
Gotta go......

dar  


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