Hello,
I am trying to figure out my ram to table distance so it bends accurately. I homed the machine and measure with large calipers and it still not bending properly.
Are you using the dies with the holders? Make sure you pick the correct one with the holder figured in.
Define ānot bending properlyā. What exactly is it doing? Under/over bent?
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So I got it where once it comes down itās at the correct hight now by doing the bed to ram adjustment but my 90 degree bend on 1/4ā was 10 degrees under bent
Iām using the dies I ordered from them the 4 way dies and holders are on back order so Iām using acute die
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Are you bending steel? I just checked and the acute dies are not rated for 1/4" steel unless youāre using the 2" die. Which punches are you using?
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i am also noticing this - i tried setting my clamp rate to zero and ran my program and the ram height was significantly higher than it should be. I calibrated my ram to table height with gage blocks, did the procedure. I verified all my tooling heights: my punch is spot on, the die .005 tall. I made that adjustment. I also noticed the punch is held off the ram by the clamp plate by about 0.003-0.005" so that would make my punch a little taller. I made that adjustment. The punch at āclampā was still hovering over the material by about 0.050".
I think the issue is that when you calibrate your Ram-to-table height, you are getting the ram at -0.050 - the position it moves after it homes, so you need to add that .050 back to your measured RTTH. I did that and the clamp now seems spot on.
Langmuir, is this right?
Yes. The Ram to table height is supposed to be a measurement of the distance between the 0.000 position and the table. You can reach the 0.000 position by cancelling a homing procedure half-way through the process. Alternatively you could bring the ram down to a known position (ex.Y=-3") and measure the distance there, and add 3" to the measured amount.
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Another question hereā¦ I have been slowly ādialing inā my brake (getting good results btw, thank you Langmuir!) but have a few more questions and maybe a suggestion. I noticed that every time I clamped my part would get a little bend, which seems bad. If you make a mistake you obviously donāt want a bend left in your blank. So I started fiddling with the bend rate in settings and noticed that even at ā0ā it was still clamping. Either I donāt understand that setting or the punch and die are not exactly where the control thinks they are. I ended up micāing my blank and adjusting the ram-to-table height until my ā0%ā clamp rate just kissed the blank.
Is that a legit way to dial in your setup? If so, I wish there was a mode to make that easier. It seems a lot better than fussing with all the tool heights and ram-to-table height, which is a lot of measurement and potentially more room for error. Kissing off on a blank of known thickness would be quick and easy!