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Author Topic: Tool radius not less than arc radius  (Read 7935 times)

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Offline josh

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Tool radius not less than arc radius
« on: June 07, 2010, 12:36:32 AM »
can someone explain to me what do this mean (Tool radius not less than arc radius)
thats what comes up on the STATUS of my screen and also stops my machine form doing the part.
Re: Tool radius not less than arc radius
« Reply #1 on: June 07, 2010, 06:14:27 AM »
can someone explain to me what do this mean (Tool radius not less than arc radius)
thats what comes up on the STATUS of my screen and also stops my machine form doing the part.

You are making a 50mm square pocket, in the corners you want a 3mm radius "ARC RADIUS" you set the program to run using a tool of 12mm diameter "6mm TOOL RADIUS"

Which is impossible, so you must use a smaller tool
The Good Thing About Mach3, Is It's very Configurable

The Bad Thing About Mach3, Is It's Too Configurable

Offline ger21

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Re: Tool radius not less than arc radius
« Reply #2 on: June 07, 2010, 11:56:21 AM »
I believe this only applies when using G41/G42.
Gerry

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http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
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Offline RICH

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Re: Tool radius not less than arc radius
« Reply #3 on: June 07, 2010, 03:18:22 PM »
I believe this only applies when using G41/G42.
and also relates to the lead in or out thus tool diameter should be smaller like Phil said.

In the context of the program generating the code, I would think it would error, but don't think that is
the case with LazyCam. ( to lazy to find the info in the manual....   ;D )

RICH



Offline josh

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Re: Tool radius not less than arc radius
« Reply #4 on: June 07, 2010, 09:07:06 PM »
I believe this only applies when using G41/G42.
[/
quote]
what do you mean by saying it only applies when using  g41/g42
because I am using g41/g42.
thanks for the replies to everyone.

Offline ger21

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Re: Tool radius not less than arc radius
« Reply #5 on: June 07, 2010, 09:43:16 PM »
You'll only get the error when using G41/G42, because Mach3 can't apply the offset.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline josh

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Re: Tool radius not less than arc radius
« Reply #6 on: June 07, 2010, 11:35:23 PM »
so what would be your sudggestion for me to fix this problem

Offline Sam

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Re: Tool radius not less than arc radius
« Reply #7 on: June 07, 2010, 11:56:06 PM »
1. Use a smaller tool to achieve the programmed radius.
or
2. Use a larger radius in the program.
or
3. Use a combination of both 1 and 2.
or
4. If caused by to short of a lead-in, increase the lead-in distance.

There are a few scenarios that you would get this error. As stated above, it could be caused by to short of a lead-in when applying the tool comp. It could also be caused by a bad choice of tool diameters, or to small of a fillet radius in the part program. If you could post your code, and tell us what cutter your using, we could get a better understanding of what's going on.
« Last Edit: June 07, 2010, 11:58:52 PM by Sam »
"CONFIDENCE: it's the feeling you experience before you fully understand the situation."

Offline ger21

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Re: Tool radius not less than arc radius
« Reply #8 on: June 08, 2010, 06:36:47 PM »
Assuming it's not a lead in issue, basically, just make sure any inside corners have a radius larger than the tools radius. That's it.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html