Error message with tool compensation

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30 May 2013 04:56 #34933 by simosim
Hi I want to run this piece of code:

G21G90G64G40
G0Z5.0
T1D1G41M6
G17
M4S3000
G0X-10.6804Y5.01686
G0Z-3.0
G1F100.0Z-4.0
G3X-0.1Y15.0Z-2.0I0.5804J9.98314
G1F300.0Y50.0
G2X0.0Y50.1I0.1J0.0
G1X20.0
G2X20.1Y50.0I0.0J-0.1
G1Y0.0
G2X20.0Y-0.1I-0.1J0.0
G1X0.0
G2X-0.1Y0.0I0.0J0.1
G1Y15.0
G3F100.0X-5.87194Y24.0622Z-4.0I-10.0J0.0
G0Z5.0
...........


I get the error message: "Arc to straight motion makes a corner the compensated tool can not fit in without gauging"

What does that mean and how to remove that message?
Attachments:

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30 May 2013 13:52 #34949 by cncbasher
the tool cannot follow the path without gouging into the work ,, so either you have too large a tool for the curvature of the arc or the tool compensation in your tool table is too large for it to follow the path required

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30 May 2013 19:52 #34967 by andypugh

I get the error message: "Arc to straight motion makes a corner the compensated tool can not fit in without gouging"


What it means is that there is a corner in the path which is too sharp for the tool to reach.
This is probably because one of your arcs is not tangent to the previous line.
(It looks to be the first G3, as that is the only one with both an I and J value.)

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30 May 2013 21:32 #34975 by simosim
Hi

Thank you. I know what you mean, but don't know how to correct this. Could you please try to find out the correct arc parameters? Maybe a spiral entry would do it? Although I would not like to see the mill "dance" before making a simple rectangle profile.

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31 May 2013 00:06 #34983 by BigJohnT
I suspect you don't understand how cutter compensation works. Perhaps now is a good time to read this chapter on cutter compensation. While some controls will let you program a path that causes cutter gouging, LinuxCNC will not allow this.

JT

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