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If i fold 1.5mm zinc sheet in a 12mm press brake die, i get a 0mm radius

Question asked by Brad Wilkin on May 23, 2016
Latest reply on May 26, 2016 by Arthur McRae

hi there, i am trying to set up our solidworks sheetmetal bend tables.

I have turret punched a piece of zincanneal 1.5mm thick into a 800mm x 100mm rectangle, folded it at 50mm 90 degrees, and it measured outside measurement, 51.4mm x 51.4mm. I am using a 7-axis CNC press brake, with a 12mm vee (8 times thickness) with a 1mm radius top punch . I cannot see why i am not gaining/stretching the material at all, if anything, i am losing material. please let me know what you think