Another plasma component...
30 Jun 2019 00:06 #138216
by phillc54
I think in the user guide the following line appears three times:
Replied by phillc54 on topic Another plasma component...
That was my thought originally as well, but seeing the probing issues have made me rethink (maybe overthink) the way to do it.Guys
I am most likely in the minority here. I have not had any probing problems since the middle of May. I find the current probing with rapid to a clearance height and then probe speed to material to work well. I can easily see that results of rapid down coupled with an ohmic or float switch malfunction to cause damage to your torch or the mounting. I am having a hard time seeing how two moves to the material surface will be faster.
I will have to wait until after 8/7 before I can try using PlasmaC from the new master branch.
John
I think in the user guide the following line appears three times:
WARNING: Probe Height is the height above the minimum Z axis limit.Please Log in or Create an account to join the conversation.
30 Jun 2019 02:17 - 30 Jun 2019 02:20 #138217
by rodw
Phill, I don't see thats an issue as its fixed by user training/documentation.
To me, the real issue is when the material warps above the probe height and Plasmac can't recover.
It needs to be smarter and say, "Oops, that was unexpected, let me try again from a higher start position." Otherwise you have to set the probe height way up off the sheets so it adds enormously to cutting times. According to Plasac's stats, I think my machine has spent more time probing than cutting.
Replied by rodw on topic Another plasma component...
That was my thought originally as well, but seeing the probing issues have made me rethink (maybe overthink) the way to do it.
I think in the user guide the following line appears three times:WARNING: Probe Height is the height above the minimum Z axis limit.
Phill, I don't see thats an issue as its fixed by user training/documentation.
To me, the real issue is when the material warps above the probe height and Plasmac can't recover.
It needs to be smarter and say, "Oops, that was unexpected, let me try again from a higher start position." Otherwise you have to set the probe height way up off the sheets so it adds enormously to cutting times. According to Plasac's stats, I think my machine has spent more time probing than cutting.
Last edit: 30 Jun 2019 02:20 by rodw.
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30 Jun 2019 03:07 #138218
by phillc54
Replied by phillc54 on topic Another plasma component...
Well it should go to the top of Z and pause, allowing the operator to determine the cause, it may well have hit a part that has tipped up.To me, the real issue is when the material warps above the probe height and Plasmac can't recover.
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30 Jun 2019 03:15 #138219
by rodw
Are you sure it does that and not go into an endless probing loop? Thats what I see here.
Replied by rodw on topic Another plasma component...
Well it should go to the top of Z and pause, allowing the operator to determine the cause, it may well have hit a part that has tipped up.To me, the real issue is when the material warps above the probe height and Plasmac can't recover.
Are you sure it does that and not go into an endless probing loop? Thats what I see here.
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30 Jun 2019 03:43 #138220
by phillc54
I should be able to try it on my real machine sometime this week.
It gives one of these error messages:
Replied by phillc54 on topic Another plasma component...
It definitely does on my sim and I am sure it did on the test rig but that is pulled apart now.Are you sure it does that and not go into an endless probing loop? Thats what I see here.
I should be able to try it on my real machine sometime this week.
It gives one of these error messages:
then Z goes to the top and the program pausesfloat switch detected while moving to probe height program is paused
ohmic probe detected while moving to probe height program is paused
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30 Jun 2019 23:37 #138263
by phillc54
Replied by phillc54 on topic Another plasma component...
Well the good news is that the
LinuxCNC buildbot
now has PlasmaC in the master branch packages and the documents are now online as well, in both
HTML
and
PDF
format.
The latest version has an updated Statistics tab with figures per job and totalled plus run time and torch on time were added.
The latest version has an updated Statistics tab with figures per job and totalled plus run time and torch on time were added.
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30 Jun 2019 23:54 #138264
by rodw
Awesome work, Phill, you should feel very proud of what you've achieved.
So does this mean you can build your plasma table now?
Replied by rodw on topic Another plasma component...
Well the good news is that the LinuxCNC buildbot now has PlasmaC in the master branch packages and the documents are now online as well, in both HTML and PDF format.
The latest version has an updated Statistics tab with figures per job and totalled plus run time and torch on time were added.
Awesome work, Phill, you should feel very proud of what you've achieved.
So does this mean you can build your plasma table now?
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30 Jun 2019 23:56 #138265
by phillc54
Replied by phillc54 on topic Another plasma component...
It was my intention to have another crack at it tomorrow but the chief has other ideas...So does this mean you can build your plasma table now?
The following user(s) said Thank You: rodw
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01 Jul 2019 00:09 #138266
by mkardasi
Replied by mkardasi on topic Another plasma component...
Probe time runs continuously on my cfg, even when not running a program. I suppose I am the only one using Safe Height = 0 if that matters.
Attachments:
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01 Jul 2019 00:14 #138267
by rodw
I think what most of us don't understand is the Z axis 0 position should be at the lowest point of travel.
The easiest way to do that is to jog your Z to the top of its, travel, note the absolute coordinates (say its 100mm) then touch off to 100mm
Then your safe height needs to be above the material (say 50mm) and maybe your probe height is say 20mm
Replied by rodw on topic Another plasma component...
Probe time runs continuously on my cfg, even when not running a program. I suppose I am the only one using Safe Height = 0 if that matters.
I think what most of us don't understand is the Z axis 0 position should be at the lowest point of travel.
The easiest way to do that is to jog your Z to the top of its, travel, note the absolute coordinates (say its 100mm) then touch off to 100mm
Then your safe height needs to be above the material (say 50mm) and maybe your probe height is say 20mm
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