eqshop9689
Plastic
- Joined
- Aug 31, 2017
I built a progressive punch and die set. I tested it today and it didnt work. I calculated the tons required and it was 16 tons of shear. 3/8" 6061 aluminum is the material. I have a no. 3 Niagara punch press that's good for 19 tons. The books said clearance constant for aluminum over 1/8" is 8, so .375 divided by 8 is about 48 thousandths, divide that by two so my clearance is 24 thousandths per side. I have that built in the die set. Running it in a commercial danley die shoe set on leader pins. The half inch hole and pilot worked good, when it got to the big blank out operation it stalled the press and just slightly indented the material.
Not sure if I got the right category of forum. Any ideas what I'm doing wrong? I'll try to get some pictures uploaded here.
Not sure if I got the right category of forum. Any ideas what I'm doing wrong? I'll try to get some pictures uploaded here.