Mach3 Post Processor, Probe Feed Rate

[malmquistm]

Hi, here is an example of some Gcode: 

N10 G90
N15 G71

(2D Profile1)
N20 G0 X-43.722 Y-24.879
N25 G31 Z-100. F5219.2(probe command)
N30 G92 Z0.
N35 G0 Z15 (retract height)
N40 G0 Z3.8(pierce height)

the PP is specifying the feed rate @F5219.2 during the probe command (this is the cutting speed for the plasma / material thickness) at this speed it is traveling to fast for the Z to stop when the ohmic sensor detects the top of material. 

Any ideas on how I can specify the probe Feed rate independent of the cutting speed ?

Thanks

[malmquistm]

I have come to find that the

Leed-In Feed-rate

located in the Tool Feed-rates affects the specified Probe feed rate, I will experiment with how slow I can set that federate for leed-in and still have acceptable entry points for plasma cutting. 

[Anonymous]

I have virtually the same question (posted here: https://forums.autodesk.com/t5/fusion-360-support/2d-plasma-cutting-setting-probe-feed-rate-independ...)

Did you ever find out how to set the probe and lead-in feed rates independent of each other?

Thanks in advance

[malmquistm]

Hi sir, no I have been manually modifying this rate in my g code to
produce accurate ohmic probing,

[Anonymous]

OK. Thank you for your reply. If I come across an answer, I'll post it here.

[daniel_lyall]

Can you guys post an example Gcode that has this problem.

[Anonymous]

Sure. They're in the post I linked to. If you'd look that over too, I'd appreciate it. Sure would be a help in streamlining the process.

I'll post the screenshots here, as well

Thanks for the reply

[daniel_lyall]

I want a Gcode, not a picture.

[Anonymous]

OK. Here's the G-Code text. Tried posting the actual file, but it won't let me.

N10 G90
N15 G70

(2D Profile1)
N20 G0 X2.1108 Y0.7374
N25 G31 Z-100. F30.
N30 G92 Z-0.158
N35 G0 Z0.77
N40 G0 Z0.08
N45 M3
N50 G4 P2.
N55 G1 Z0.06 F30.
N60 G1 X2.1887 Y0.7824
N65 G3 X2.22 Y0.8365 I-0.0313 J0.0541
N70 G3 X1.78 I-0.22 J0. F90.
N75 G3 X2.22 I0.22 J0.
N80 G3 X2.1887 Y0.8906 I-0.0625 J0.
N85 G1 X2.1108 Y0.9356
N90 M5

N95 G0 Z0.77

(2D Profile2)
N100 G0 X0.1674 Y1.8367
N105 G31 Z-100. F30.
N110 G92 Z-0.158
N115 G0 Z0.77
N120 G0 Z0.145
N125 M3
N130 G4 P2.
N135 G1 Z0.125 F30.
N140 G1 X0.2558 Y1.7483
N145 G3 X0.3 Y1.73 I0.0442 J0.0442
N150 G1 X3.7 F90.
N155 G2 X3.7297 Y1.696 I0. J-0.03
N160 G1 X3.5297 Y0.196
N165 G2 X3.4887 Y0.1722 I-0.0297 J0.004
N170 G3 X1.009 Y0.2714 I-1.3775 J-3.3909
N175 G2 X0.9905 Y0.2715 I-0.009 J0.0286
N180 G1 X0.6905 Y0.3715
N185 G2 Y1.2285 I0.1428 J0.4285
N190 G1 X0.6936 Y1.2293
N195 G1 X0.6968 Y1.2298
N200 G1 X0.7 Y1.23
N205 G1 X3.4
N210 M5

N215 G0 Z0.77

(2D Profile3)
N220 G0 X1.8764 Y2.1119
N225 G31 Z-100. F30.
N230 G92 Z-0.158
N235 G0 Z0.77
N240 G0 Z0.08
N245 M3
N250 G4 P2.
N255 G1 Z0.06 F30.
N260 G1 X1.94 Y2.0483
N265 G3 X1.9842 Y2.03 I0.0442 J0.0442
N270 G1 X4. F90.
N275 G2 X4.03 Y2. I0. J-0.03
N280 G1 Y0.
N285 G2 X4. Y-0.03 I-0.03 J0.
N290 G1 X0.
N295 G2 X-0.03 Y0. I0. J0.03
N300 G1 Y2.
N305 G2 X0. Y2.03 I0.03 J0.
N310 G1 X1.9842
N315 G3 X2.0284 Y2.0483 I0. J0.0625
N320 G1 X2.092 Y2.1119
N325 M5

N330 G0 Z0.77
N335 M30

[Richard.stubley]

Hi,

Reading this you could probably just add a user parameter for your probing speed. Could you attach your post and F3D file.

I will happily take a look at this for you, I work mainly on the Milling probing but would be interested to know how you use probing for Laser/plasma/water. 

[Anonymous]

I've tried posting the ".tap" file, but it won't seem to let me. Is there a way to do this that I'm not catching?

The G-Code for it (as I'm sure you can tell) is posted above, if that helps. Here's the public link to my F3D file: https://a360.co/33ybu3x

Not sure if it'll work, or not. I haven't tried it until now. It's just a simple line test. 

If you want to take a look at my recent post (I have virtually the same question), it's here: https://forums.autodesk.com/t5/fusion-360-support/2d-plasma-cutting-setting-probe-feed-rate-independ...

I have a couple of pictures attached there that detail what the issue is.

Thanks for your response and I appreciate the potential help.

[daniel_lyall]

To post a G code change it to a .txt or stick it in a zip file and attach that.

Attaching a model To do this Go to File -> Export and save as a .F3D Archive File and attach it to your next post, or if an f3dz See this article for how to export a F3Dz file https://knowledge.autodesk.com/support/fusion-360/learn-explore/caas/sfdcarticles/sfdcarticles/How-t...

For pictures, you use the insert photo icon to the right of the smiley faces above.

[Anonymous]

Figured I was missing something. Thank you. Here's all the info I can think to give. Anything else you need, just let me know. I'll give as much information as I can.

I've attached the .f3d file and g-code .txt file. Also, I'm using Mach3 to run my table. I've attached my current configuration file, as well (if it helps).

Here are the pictures from my recent post:

I would like the Lead-In Feedrate to match the Cutting Feedrate on output from the post processor. 

As of now, setting the "Lead-In Feedrate" sets both the probe and lead-in as one feedrate.

I know I can manually edit the G-Code to the rates I want, but I'm hoping there is a way to do this automatically.

[daniel_lyall]

@Anonymous  @malmquistm  do you have a feed amount you would like for the probing I can hard set it to a value. 

[malmquistm]

On my machine I have found 750 mm/in to produce good reliable results, Slow but accurate 

[daniel_lyall]

@malmquistm  You mean 750mm/min 

[daniel_lyall]

@malmquistm  @Anonymous  Right I added a user property of probe feed you use this to set the probe feed rate, It seems to be working fine for me.

Example 

(BOOM.)
N10 G90
N15 G70

(2D Profile1)
N20 G0 X2.1108 Y0.7374
N25 G31 Z-100. F10.
N30 G92 Z0.
N35 M3
N40 G4 P1.
N45 G1 X2.1887 Y0.7824 F30.
N50 G3 X2.22 Y0.8365 I-0.0313 J0.0541
N55 G3 X1.78 I-0.22 J0. F90.
N60 G3 X2.22 I0.22 J0.
N65 G3 X2.1887 Y0.8906 I-0.0625 J0.
N70 G1 X2.1108 Y0.9356
N75 M5


(2D Profile2)
N80 G0 X0.1674 Y1.8367
N85 G31 Z-100. F10.
N90 G92 Z0.
N95 M3
N100 G4 P1.
N105 G1 X0.2558 Y1.7483 F30.
N110 G3 X0.3 Y1.73 I0.0442 J0.0442
N115 G1 X3.7 F90.
N120 G2 X3.7297 Y1.696 I0. J-0.03
N125 G1 X3.5297 Y0.196
N130 G2 X3.4887 Y0.1722 I-0.0297 J0.004
N135 G3 X1.009 Y0.2714 I-1.3775 J-3.3909
N140 G2 X0.9905 Y0.2715 I-0.009 J0.0286
N145 G1 X0.6905 Y0.3715
N150 G2 Y1.2285 I0.1428 J0.4285
N155 G1 X0.6936 Y1.2293
N160 G1 X0.6968 Y1.2298
N165 G1 X0.7 Y1.23
N170 G1 X3.4
N175 G3 X3.4442 Y1.2483 I0. J0.0625
N180 G1 X3.5326 Y1.3367
N185 M5


(2D Profile3)
N190 G0 X1.8764 Y2.1119
N195 G31 Z-100. F10.
N200 G92 Z0.
N205 M3
N210 G4 P1.
N215 G1 X1.94 Y2.0483 F30.
N220 G3 X1.9842 Y2.03 I0.0442 J0.0442
N225 G1 X4. F90.
N230 G2 X4.03 Y2. I0. J-0.03
N235 G1 Y0.
N240 G2 X4. Y-0.03 I-0.03 J0.
N245 G1 X0.
N250 G2 X-0.03 Y0. I0. J0.03
N255 G1 Y2.
N260 G2 X0. Y2.03 I0.03 J0.
N265 G1 X1.9842
N270 G3 X2.0284 Y2.0483 I0. J0.0625
N275 G1 X2.092 Y2.1119
N280 M5

N285 M30

[daniel_lyall]

@seth.madore can you please give them a kick and get .cps, add to the list of what can get attached to posts.

[seth.madore]

It used to be on the list. I'll get on them 👍

[Anonymous]

Hey Daniel. Thanks for your reply.

I haven't had a chance to try this out, yet. I will let you know how it works out.