Opinions on first cuts after calibrating and squaring

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Heavychevy
Posts: 11
Joined: Mon Jul 23, 2018 10:21 pm

Opinions on first cuts after calibrating and squaring

Post by Heavychevy » Sat Sep 15, 2018 1:10 am

Here are some cuts that my 5x10 diy plasma table with floating head, Running sheetcam, mach3, nema 34 "x" nema 24 "y" and "z" THC not working yet. Using a everlast 80s pt80 machine torch on 1/4 cr plate. Cut height .060 pierce .120 delay .5 60amps 1.2mm nozzle
I made a line speed test at first with 13 lines 6" long starting at 20ipm running 5ipm increments on each line. Then after that I made a 5 line test starting at 30ipm working my way up 5 ipm at a time till I got to 50ipm the outside square is cut a 46ipm.
I have rotated the file in sheetcam to check lines on both "x" and "y" axis.
It seems like my y axis is losing steps or something is off? I have checked backlash, motor tuning and calibrated all axis down to .0002 accuracy. Also when the cut goes from "X" then 90 degrees to the "Y" axis it picks up a dip in the cut? But from "Y" 90* to "X" it's perfect! ?!
This is my first major post so I hope I have provided enough information as detailed as possible.
Any input or information will be greatly appreciated.
Thank you.
Attachments
20180914_202830_resized.jpg
20180914_202421_resized.jpg
20180914_202354_resized.jpg
20180914_202509_resized.jpg
20180914_202757_resized.jpg
20180914_202739_resized.jpg
Diy 5x10 plasma table
Everlast 80s plasma Everlast 250 tig
Lincoln 350mp mig
Bridgeport series 1 and 2
Webb 3vh vertical mill
Brown and sharpe horizontal mill
South bend 14.5 x60 metal lathe
Old 65 ton piranha iron worker

metalassassin
Posts: 2
Joined: Sat Sep 15, 2018 10:05 am

Re: Opinions on first cuts after calibrating and squaring

Post by metalassassin » Sun Sep 16, 2018 11:52 pm

none of the pierces look like holes.pierce heights are off definitely. I've built a lot of 3d printers i would guess your steps per mm is off for what ever motors you using. tape a needle to the torching set down a ruler and move x 10mm and see where its at then do y same should find problem.

Heavychevy
Posts: 11
Joined: Mon Jul 23, 2018 10:21 pm

Re: Opinions on first cuts after calibrating and squaring

Post by Heavychevy » Mon Sep 17, 2018 4:15 pm

I did find a few problems I am currently correcting.
1. Loose pinnion gear set screws on y axis
2 . Timing belt fitment on pulley
3. peirce delay is now set to .8 instead of .5
Diy 5x10 plasma table
Everlast 80s plasma Everlast 250 tig
Lincoln 350mp mig
Bridgeport series 1 and 2
Webb 3vh vertical mill
Brown and sharpe horizontal mill
South bend 14.5 x60 metal lathe
Old 65 ton piranha iron worker

Heavychevy
Posts: 11
Joined: Mon Jul 23, 2018 10:21 pm

Re: Opinions on first cuts after calibrating and squaring

Post by Heavychevy » Mon Sep 17, 2018 4:15 pm

Also found in sheet cam I had "loop sharp corners" on.
Diy 5x10 plasma table
Everlast 80s plasma Everlast 250 tig
Lincoln 350mp mig
Bridgeport series 1 and 2
Webb 3vh vertical mill
Brown and sharpe horizontal mill
South bend 14.5 x60 metal lathe
Old 65 ton piranha iron worker

Heavychevy
Posts: 11
Joined: Mon Jul 23, 2018 10:21 pm

Re: Opinions on first cuts after calibrating and squaring

Post by Heavychevy » Sat Sep 22, 2018 12:16 am

Quick update. After filing deeper set screw flat spots on my shafts and finding the right timing belt. All is well.
Turned loop sharp corners off in sheetcam and changed pierce times and the lead in and out position.
Here's some new pictures of my 5 ipm incrament line speed testing on the y axis. :D
Opinions and advice are always appreciated.
Attachments
20180921_221203_resized.jpg
Diy 5x10 plasma table
Everlast 80s plasma Everlast 250 tig
Lincoln 350mp mig
Bridgeport series 1 and 2
Webb 3vh vertical mill
Brown and sharpe horizontal mill
South bend 14.5 x60 metal lathe
Old 65 ton piranha iron worker

Heavychevy
Posts: 11
Joined: Mon Jul 23, 2018 10:21 pm

Re: Opinions on first cuts after calibrating and squaring

Post by Heavychevy » Sat Sep 22, 2018 12:24 am

I'm thinking 40 to 50 ipm looks great at 60amps?
Here's a backside photo and all corners are square.
Attachments
20180921_222030_resized(1).jpg
20180921_221817_resized(1).jpg
Diy 5x10 plasma table
Everlast 80s plasma Everlast 250 tig
Lincoln 350mp mig
Bridgeport series 1 and 2
Webb 3vh vertical mill
Brown and sharpe horizontal mill
South bend 14.5 x60 metal lathe
Old 65 ton piranha iron worker

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