Motor issue or...?

Arclight Hardware discussion forum.
Post Reply
Deezl Smoke
Posts: 28
Joined: Mon May 18, 2020 3:03 pm

Motor issue or...?

Post by Deezl Smoke » Mon Dec 20, 2021 3:28 pm

2019 Arclight 6x12, Hypertherm 105, sheetcam, Commandcnc.
Lately this issue has been popping up on the first cut. It happens only on the left as you face the end of the table from the home position.
20211220_112715.jpg
So at my expense, I then have to re-cut and the second cut always turns out fine. Do I need a new motor on the X axis, or what are some possible causes of this?
Second cut.
20211220_113234.jpg
Thank you for any help.

You do not have access to view or download this file.
Become a Contributing Member to gain access to this feature. Click Here


weldguy
Elite Contributing Member
Elite Contributing Member
Posts: 912
Joined: Fri Apr 17, 2009 11:48 am

Re: Motor issue or...?

Post by weldguy » Mon Dec 20, 2021 4:26 pm

No, you do not need a motor. I suspect your gantry is driving into or over something. I would run that program with the plasma cutter turned OFF and closely watch as this happens to see if you can determine whats going on. Look closely at your rails and bearings while this is running and just keep running it over and over again until you see it. If you don't think its a mechanical issue after doing that please post your code.

TJS
Elite Contributing Member
Elite Contributing Member
Posts: 343
Joined: Wed Nov 26, 2014 1:22 pm
Location: Fairfield, CT.
Contact:

Re: Motor issue or...?

Post by TJS » Mon Dec 20, 2021 4:48 pm

How thick is that material. There is a large discussion over at the CandCNC forum. We as others have issue with torch diving and there are settings in the Config that are recommended. Not saying your torch is diving but mine does on 3/8" or thicker with my THC on. Cut direction looks to be counter clockwise (however I may be wrong from your lead in pic). I always thought the cut direction on outside cuts is supposed to be clockwise or something like that. However I am with Weldguy, something has some slop.

Deezl Smoke
Posts: 28
Joined: Mon May 18, 2020 3:03 pm

Re: Motor issue or...?

Post by Deezl Smoke » Mon Dec 20, 2021 10:37 pm

weldguy wrote:
Mon Dec 20, 2021 4:26 pm
No, you do not need a motor. I suspect your gantry is driving into or over something. I would run that program with the plasma cutter turned OFF and closely watch as this happens to see if you can determine whats going on. Look closely at your rails and bearings while this is running and just keep running it over and over again until you see it. If you don't think its a mechanical issue after doing that please post your code.
Great idea. I try to keep things as clean as I can given the place I have to operate the table. But there very well may be something like some pierce splatter etc. where it should'nt be. Thanks so much for the idea.

Deezl Smoke
Posts: 28
Joined: Mon May 18, 2020 3:03 pm

Re: Motor issue or...?

Post by Deezl Smoke » Mon Dec 20, 2021 10:42 pm

TJS wrote:
Mon Dec 20, 2021 4:48 pm
How thick is that material. There is a large discussion over at the CandCNC forum. We as others have issue with torch diving and there are settings in the Config that are recommended. Not saying your torch is diving but mine does on 3/8" or thicker with my THC on. Cut direction looks to be counter clockwise (however I may be wrong from your lead in pic). I always thought the cut direction on outside cuts is supposed to be clockwise or something like that. However I am with Weldguy, something has some slop.
This material is .875" thick A36 mild. Yes, the cut direction is counterclockwise. The inside cuts are clockwise. I assume that is correct for my torch being a Hypertherm.
I had torch dive issues some time ago. I found deleting a reloading the toolset helped. Then I added several path rules like turning off dthc a few thousands before a corner sharper than 45 degrees, and turning it back on a few thou after the corner etc. Things like that really made the cuts nicer.

weldguy
Elite Contributing Member
Elite Contributing Member
Posts: 912
Joined: Fri Apr 17, 2009 11:48 am

Re: Motor issue or...?

Post by weldguy » Wed Dec 22, 2021 9:43 am

Sounds like you have your cut direction backwards, check out this topic viewtopic.php?f=202&t=30272

Not that cut direction will have anything to do with the problem you originally posted about but it is important, particularly when cutting thicker materials to try and maintain a square cut with minimal bevel.

Curious to hear back about your original issue and if you found something loose or crap on a rail or something like that.

Deezl Smoke
Posts: 28
Joined: Mon May 18, 2020 3:03 pm

Re: Motor issue or...?

Post by Deezl Smoke » Wed Dec 22, 2021 2:43 pm

weldguy wrote:
Wed Dec 22, 2021 9:43 am
Sounds like you have your cut direction backwards, check out this topic viewtopic.php?f=202&t=30272

Not that cut direction will have anything to do with the problem you originally posted about but it is important, particularly when cutting thicker materials to try and maintain a square cut with minimal bevel.

Curious to hear back about your original issue and if you found something loose or crap on a rail or something like that.
Yes, I see that now after TJS mentioned it, I looked it up on here with a Jim Colt thread. Now I have to work on that too. I have no clue how that got changed in the sheetcam.

Going to diagnose the table issue over Christmas. I have a feeling it may have some pierce splatter stuck in the gantry gear rack or something from before I bought the refrigerated air dryer. I had a bad series of slow piercing with a lot of splatter blowing upward into the Z mechanism. May have some stuck in the X rack. I will report back when I find it.

TJS
Elite Contributing Member
Elite Contributing Member
Posts: 343
Joined: Wed Nov 26, 2014 1:22 pm
Location: Fairfield, CT.
Contact:

Re: Motor issue or...?

Post by TJS » Mon Jan 10, 2022 10:04 am

THere are some good posts on thick material to combat the volcano effect. I have to find it. I think it is something like a longer lead in and longer delay or moving while it is piercing. I cannot remember.

User avatar
acourtjester
Elite Contributing Member
Elite Contributing Member
Posts: 5902
Joined: Sat Jun 02, 2012 6:04 pm
Location: Pensacola, Fla

Re: Motor issue or...?

Post by acourtjester » Mon Jan 10, 2022 11:09 am

A simple way to find the location of the bump is to single step the G-code, no plasma. As you images show you may be always starting the table first cut at the same location and it only happens there.
DIY 4X4 Plasma/Router Table
Hypertherm PM65 Machine Torch
Drag Knife and Scribe
Miller Mig welder
13" metal lathe
Small Mill
Everlast PowerTig 255 EXT

User avatar
djreiswig
Elite Contributing Member
Elite Contributing Member
Posts: 1284
Joined: Thu Nov 19, 2015 10:02 pm
Location: SE Nebraska

Re: Motor issue or...?

Post by djreiswig » Mon Jan 10, 2022 9:31 pm

I use a ramp pierce on thick material. Plunge speed same as cut speed. No pierce delay. Makes the slag shoot out behind the torch.
2014 Bulltear (StarLab) 4x8
C&CNC EtherCut
Mach3, SheetCam, Draftsight
Hypertherm PM65
Oxy/Acetylene Flame Torch
Pneumatic Plate Marker, Ohmic, 10 inch Rotary Chuck (in progress)

TJS
Elite Contributing Member
Elite Contributing Member
Posts: 343
Joined: Wed Nov 26, 2014 1:22 pm
Location: Fairfield, CT.
Contact:

Re: Motor issue or...?

Post by TJS » Tue Jan 11, 2022 7:10 am

djreiswig wrote:
Mon Jan 10, 2022 9:31 pm
I use a ramp pierce on thick material. Plunge speed same as cut speed. No pierce delay. Makes the slag shoot out behind the torch.
Can you share how you do that.

User avatar
djreiswig
Elite Contributing Member
Elite Contributing Member
Posts: 1284
Joined: Thu Nov 19, 2015 10:02 pm
Location: SE Nebraska

Re: Motor issue or...?

Post by djreiswig » Tue Jan 11, 2022 10:14 am

Ramp pierce is an option in the sheetcam tool settings. I use a perpendicular lead in the same length as material thickness. Set plunge rate whatever your cut federate is and set pierce delay to 0.
2014 Bulltear (StarLab) 4x8
C&CNC EtherCut
Mach3, SheetCam, Draftsight
Hypertherm PM65
Oxy/Acetylene Flame Torch
Pneumatic Plate Marker, Ohmic, 10 inch Rotary Chuck (in progress)

TJS
Elite Contributing Member
Elite Contributing Member
Posts: 343
Joined: Wed Nov 26, 2014 1:22 pm
Location: Fairfield, CT.
Contact:

Re: Motor issue or...?

Post by TJS » Tue Jan 11, 2022 10:27 am

djreiswig wrote:
Tue Jan 11, 2022 10:14 am
Ramp pierce is an option in the sheetcam tool settings. I use a perpendicular lead in the same length as material thickness. Set plunge rate whatever your cut federate is and set pierce delay to 0.
Thanks. I never noticed it in Sheetcam. I will take a look.

User avatar
djreiswig
Elite Contributing Member
Elite Contributing Member
Posts: 1284
Joined: Thu Nov 19, 2015 10:02 pm
Location: SE Nebraska

Re: Motor issue or...?

Post by djreiswig » Tue Jan 11, 2022 8:55 pm

edited_SheetCam-NoZ.png.jpg

You do not have access to view or download this file.
Become a Contributing Member to gain access to this feature. Click Here

2014 Bulltear (StarLab) 4x8
C&CNC EtherCut
Mach3, SheetCam, Draftsight
Hypertherm PM65
Oxy/Acetylene Flame Torch
Pneumatic Plate Marker, Ohmic, 10 inch Rotary Chuck (in progress)

User avatar
djreiswig
Elite Contributing Member
Elite Contributing Member
Posts: 1284
Joined: Thu Nov 19, 2015 10:02 pm
Location: SE Nebraska

Re: Motor issue or...?

Post by djreiswig » Tue Jan 11, 2022 8:56 pm

I tried the wiggle, but it seemed to blow slag back up into the nozzle. Maybe it would work if you set it to wiggle more.
2014 Bulltear (StarLab) 4x8
C&CNC EtherCut
Mach3, SheetCam, Draftsight
Hypertherm PM65
Oxy/Acetylene Flame Torch
Pneumatic Plate Marker, Ohmic, 10 inch Rotary Chuck (in progress)

Post Reply

Return to “Arclight Dynamics”

Industry Pros use FastCut CNC