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Gcode Works in Sim, Arc Radius Error in Live

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10 years 5 months ago #74198 by Todd Zuercher
Replied by Todd Zuercher on topic Gcode Works in Sim, Arc Radius Error in Live
Perhaps adding X0.7935 Y1.7053 to line N75 might help?
Code:
(T1 D=0.125 CR=0. - ZMIN=-0.375 - FLAT END MILL) N10 G90 G94 G17 G91.1 N15 G20 N20 G53 G0 Z0. (2D ADAPTIVE1) N25 M9 N30 T1 M6 N35 S1000 M3 N40 G54 N45 M8 N55 G0 X0.7935 Y1.7053 N60 G43 Z0.6 H1 N65 G0 Z0.2 N70 Z0.1325 N75 G1 X0.7935 Y1.7053 Z0.12 F30. N80 G3 X0.7065 Y1.7861 Z0.1135 I-0.0435 J0.0404 N85 X0.7935 Y1.7053 Z0.107 I0.0435 J-0.0404 N90 X0.7065 Y1.7861 Z0.1005 I-0.0435 J0.0404 N95 X0.7935 Y1.7053 Z0.0939 I0.0435 J-0.0404 N100 X0.7065 Y1.7861 Z0.0874 I-0.0435 J0.0404 N105 X0.7935 Y1.7053 Z0.0809 I0.0435 J-0.0404

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10 years 5 months ago #74201 by apt403
Replied by apt403 on topic Gcode Works in Sim, Arc Radius Error in Live
Many thanks for the help - I'll check on the tool table and try adding the G1 move tonight.

Really glad there's nothing glaringly wrong with the code my CAM package is putting out - I've been trying to tackle this for about a month now, started to think I was loosing it.

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10 years 5 months ago #74226 by andypugh
Replied by andypugh on topic Gcode Works in Sim, Arc Radius Error in Live
There is something very peculiar with the XYZ bounds in that G-code properties window.

It reminds me of a problem I saw _inside_ Inventor HSM, in their G-code preview editor.
The problem there was that their EMC post inserts a G91.1 command to make arc-centres relative, but their G-code previewer does not understand G91.1 and interprets it as G91.

I wonder if this is the problem here? You almost certainly want to make sure that you are running in G90 mode and G91.1 mode.

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10 years 5 months ago #74235 by apt403
Replied by apt403 on topic Gcode Works in Sim, Arc Radius Error in Live

Todd Zuercher wrote: ...

Do you have X or Y coordinates specified for T1 in your tool table?


Tool offsets! Yes! If you're ever in Washington state, I owe you a bottle of something good. Or shoot me a mailing address, I'll send it via UPS!

Not sure how X/Y offsets got added to the table, I can't remember ever adding them myself.

Wow, weeks of slamming my head against this problem, and it was in the tool table. Welp, at least I learned a lot about gcode, milling posts, and the interworkings of LinuxCNC.

THANK YOU!

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