Getting arc pierces on lead in on inside cuts
- tommylight
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23 Feb 2020 10:48 #158293
by tommylight
Replied by tommylight on topic Getting arc pierces on lead in on inside cuts
On the second picture there is the THC section, and there is speed in %. Lover that to prevent "bunny hopping" or to much moving up and down during cut.
The following user(s) said Thank You: phillc54
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23 Feb 2020 20:54 #158329
by TexasCNC
Replied by TexasCNC on topic Getting arc pierces on lead in on inside cuts
Ok got it I lowered it to 23% and that helped thanks for that.
Now I did make the changes as phill suggested as to arc off delay from 0.2 to 0.0 and kinda helped it but still seems to have a divot I can maybe live with that
Now I did make the changes as phill suggested as to arc off delay from 0.2 to 0.0 and kinda helped it but still seems to have a divot I can maybe live with that
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23 Feb 2020 21:52 - 24 Feb 2020 01:22 #158334
by phillc54
Replied by phillc54 on topic Getting arc pierces on lead in on inside cuts
Maybe your machine is slow at turning the torch off.
It would be worthwhile trying Tom's suggestions on this post forum.linuxcnc.org/38-general-linuxcnc-q...cuts?start=10#158257
I am not sure about the Cut Feed Rate of 150 inch/min (3810mm/min). I assume it is a40A machine from the Run Panel. Other folk would have a better idea than me.
It would be worthwhile trying Tom's suggestions on this post forum.linuxcnc.org/38-general-linuxcnc-q...cuts?start=10#158257
I am not sure about the Cut Feed Rate of 150 inch/min (3810mm/min). I assume it is a40A machine from the Run Panel. Other folk would have a better idea than me.
Last edit: 24 Feb 2020 01:22 by phillc54. Reason: typo
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24 Feb 2020 14:47 #158380
by TexasCNC
Replied by TexasCNC on topic Getting arc pierces on lead in on inside cuts
How do I speed up the speed on the axis to make them faster?
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24 Feb 2020 16:06 #158389
by tommylight
Replied by tommylight on topic Getting arc pierces on lead in on inside cuts
Edit the ini file and raise the max_velocity.
Also the stepgen_max_velocity must be raised to at least 25% more than max_velocity, if present.
Also the stepgen_max_velocity must be raised to at least 25% more than max_velocity, if present.
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25 Feb 2020 04:35 #158432
by TexasCNC
Replied by TexasCNC on topic Getting arc pierces on lead in on inside cuts
Could I still do that even though I am using the plasmaC version?
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25 Feb 2020 04:39 #158433
by rodw
Yes this is about tuning your machine regardless of if its Plasmac or something else. With Plasma cutting, acceleration and velocity are king and those limits are set in your ini file. Its therefore important to set them as high as you hardware will allow without missing steps (if its a stepper based system). This may entail some experimentation... (and in my case many crashes....)
Replied by rodw on topic Getting arc pierces on lead in on inside cuts
Could I still do that even though I am using the plasmaC version?
Yes this is about tuning your machine regardless of if its Plasmac or something else. With Plasma cutting, acceleration and velocity are king and those limits are set in your ini file. Its therefore important to set them as high as you hardware will allow without missing steps (if its a stepper based system). This may entail some experimentation... (and in my case many crashes....)
The following user(s) said Thank You: tommylight
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25 Feb 2020 05:53 #158435
by TexasCNC
Replied by TexasCNC on topic Getting arc pierces on lead in on inside cuts
got it let me try that. ONe more question if I set cut IPM on sheetcam to 100ipm and of the plasma config tab is set to 75ipm what will it cut? Whats on the gcode or on the parameters on the axis? Reason i ask is cause I was messing with IPM on the config tab and i wasnt seeing any difference.
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25 Feb 2020 05:57 - 25 Feb 2020 05:58 #158436
by phillc54
Replied by phillc54 on topic Getting arc pierces on lead in on inside cuts
Cut Feed Rate on the Run Panel controls speed as long as the GCode has F#<_hal[plasmac.cut-feed-rate]>
If the GCode has say F100 then that is the feed rate that will be used.
Edit: The GCode you posted earlier had F#<_hal[plasmac.cut-feed-rate]>
If the GCode has say F100 then that is the feed rate that will be used.
Edit: The GCode you posted earlier had F#<_hal[plasmac.cut-feed-rate]>
Last edit: 25 Feb 2020 05:58 by phillc54.
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25 Feb 2020 06:13 #158437
by TexasCNC
Replied by TexasCNC on topic Getting arc pierces on lead in on inside cuts
got it thanks
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