Rotary plugin torch height

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bobcoder
Posts: 3
Joined: Tue Feb 09, 2016 8:48 am

Rotary plugin torch height

Post by bobcoder »

Hi Les/All
I'm having a wierd problem where when i set Z zero the torch lifts up and the torch is cutting air. It seems to be raising half the thickness of the box section - not wall thickness.

P.S. Using PlasmaRotary Mach3 and it is edited according to my machine and Mach 3

Please help
Rob
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djreiswig
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Joined: Sat Feb 20, 2016 4:47 am
Location: SE Nebraska

Re: Rotary plugin torch height

Post by djreiswig »

I think z zero is supposed to be the center of the tube, not the surface.
bobcoder
Posts: 3
Joined: Tue Feb 09, 2016 8:48 am

Re: Rotary plugin torch height

Post by bobcoder »

Hi
Yes I understand that but when you want to zero the machine you get a torch crash as it tries to plunge to zero. Or am I missing something 🤔

Rob
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djreiswig
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Joined: Sat Feb 20, 2016 4:47 am
Location: SE Nebraska

Re: Rotary plugin torch height

Post by djreiswig »

Sorry, I'm not sure what else it could be. I haven't used the rotary plugin yet. I'm sure Les will be along shortly to assist.
FabLab
Posts: 16
Joined: Sun Mar 25, 2018 2:33 am

Re: Rotary plugin torch height

Post by FabLab »

I was having the same issue..
Check this link
viewtopic.php?f=2&t=8580

The latest PP that I uploaded works for me and is based off of a Mach 3 PP
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Les Newell
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Joined: Thu May 11, 2006 8:12 pm

Re: Rotary plugin torch height

Post by Les Newell »

bobcoder wrote: Sun Jun 06, 2021 9:33 pm Yes I understand that but when you want to zero the machine you get a torch crash as it tries to plunge to zero. Or am I missing something 🤔
When exactly does it crash? The post should not try to plunge to zero.
bobcoder
Posts: 3
Joined: Tue Feb 09, 2016 8:48 am

Re: Rotary plugin torch height

Post by bobcoder »

Hi Les
I think I made a mistake by making my ref 0 for z at the top. Does that make sense?
Should I have the limit/home be at the top of z or the bottom?
So confused as the gcode also has a G28.1 in there is this correct?

Sorry to sound so dumb. I haven't had any problems with sheetcam on my 8x4 plasma. Just sayin
Rob
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Les Newell
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Re: Rotary plugin torch height

Post by Les Newell »

bobcoder wrote: Tue Jun 15, 2021 6:22 pm I think I made a mistake by making my ref 0 for z at the top. Does that make sense?
Yes, for rotary cutting, Z0 is the center line of the tube. If you have a touch-off switch and the post is configured correctly (see below) this should be automatic.
Should I have the limit/home be at the top of z or the bottom?
There are two ways you can set up your machine:
  • touch-off uses home input. This has the advantage of using one less input but you can't use soft limits. In your post set refHome=true. Thsi will touch off using G31.
  • Home switch at the top of travel and touch-off uses the probe input. In your post set refHome=false. This will touch off using G38.1
In my personal opinion the second way is the best as you can use soft limits. However others would disagree :-)
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