I was doing a bend earlier today and the calculated bend tonnage was 1.47 tons (bending 0.063in Aluminum 2024-T3). During operation, the Y1 Ram load hit 10 tons, the PRV was triggered, and now I have oil everywhere. Why are my ram loads so different from the calculated and how can I prevent this in the future. I’m also struggling to find where to refill the oil, since we lost quite a bit. Any advice is welcome.
It sounds like you bottomed out the part.
Some Height Inputs to Check:
-
Measure your Ram to Table Opening Distance
-
Bring the ram down to "Y =-3.000” using the MOVE TO (Safety Button Operated) command in the Manual Mode tab.
-
Measure the opening distance between the lowest surface on the ram (the upper slab of metal) with the highest surface on the table (the lower slab of metal) using a caliper and add your machine position (+3.000") to get your total ram to table opening distance.
-
This value can be fixed in the settings tab under the ‘Ram-to-table Opening Distance’ entry.
-
-
Place the punch in the machine and use the calipers to verify that the ram-to-tip-of-punch height is correct.
-
Place the die in the machine and verify the table-to-top-of-die height is correct using calipers. If you are using a 4-way die holder, make sure you are using one of the “+riser” options.
-
Run your program to the safety point before you move to clamp it. Measure the ram to table distance at that point with calipers and see if that is correct given your known true ram to table opening height.
-
Use calipers to check your material thickness
-
Remember that the machine uses the included angle, not the excluded angle. So a flat, unbent part is a 180 degree bend. A wide, obtuse bend is a 135 degree bend.