Dont be in to much of a hurry unless your not cutting thin stuff, the height control has got me down = (
Was cutting some butterfly 3d puzzles today and no matter what I did, didnt seem to matter. The hypertherm cut profiles in mach arent close to anything in my book. And by the time the height control composents from the initial pierce voltage the specific piece is cut, It goes .080 pierce to .020 cut height andn then my z displays -.100+ z moves as I watch my z axis not turning at all or the torch staying the same distance over my sheet that is not warping at all I ahve so much weight on the edges. Some times it would go the opposite direction and rise up until it bound up the rising z axis and blind the fark outta me as I stared at the pretty light. I turned it off was pissing me off.
I started with 45amp shielded exactly what the book called for .080 pierce .020 cut height and 350ipm which seems ridicoulsly high changing my voltage in my mach 3 seemed to do absoultely nothing even if I moved it 50+ volts, I magically get a a nice straight cut on 70% of 16ga. .060 material and then the rest is at a wicked 30* angle it consistant in the same spot the torch is prertty square but I cant seem to figure why its doing this, I thought it was my other nozzle that barely got 100 pierces on it and it blew a hole out the side of the orfice and was pretty much junk. Funny thing is the bevel side is actually cut the past with no dross on that edge. the rest is horrid. It easily taps off but with the parts so small is annoying to deburr.
So I said hey lets try the fine cut same shit just smaller kerf. Im starting to wonder if its the water splashing up causing voltage issues and the dross problem the top looks fine the edges look fine, I even lowered the water 1/2 below the material and doesnt seem to help.
I know I gotta keep working it all I know is Ive seen better cut quality and I did better by hand. and I think on the butterfly atleast its corner speed and I cant shaeem to find where or if I can adjust it, because straight lines and big radius arc are fine, its the fast directional changes of the axis that cause slag. and I think it needs slowed down 80% on contours. I cut 3/16 curved flames and had little dross but still the massive bevel on the one edge.
Things I know arent causing the issues:
- I have no binding that I notice everything moves fine and my load is low
- I have 100% dry air that doesnt even make it to the filter I have before the plasma
- I have 2 x 2 3/16 tubing laying on top of my sheet just outside my cut area
- I loctited my pinions and theres no play in any of the gear to racks
Could my voltage be a ground issue? Ive seen ground clamps in water my sheet usually pools up with water on top of it fast but the purging of air through the nozzle blows it away from the torch pretty well. I havent grounded my table but that should only cause issues with the voltage reading right? seems to not effect the controller, although I still get random areas where my torch blows out if it goes off the sheet just a hair if a lead in was to close.
tomorrow ill get some pics of what it looks like so I can post it here and on plasma spider Ill work through it I just gotta tell people Im not cutting anything for them til I get this straightened out
Yeah there welded togeher
also cut a fly, but i lowered my torch .020 and the slots cut a little thinner and need a cut off wheel down them to get em to slide together. also gt a Dragon file I wanna cut but have no clue how to assemble it
