g1 z1.0 angle5

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29 Oct 2011 00:32 #14356 by tenaja
g1 z1.0 angle5 was created by tenaja
Is there an angle setting for the g1 commands? On some of my large "commercial" lathes, I can do this...

g0 z0 x1.0
g1 z1.0 a5.0

...and it will do a 1" long, 5* angle cut. I'd like to do this with EMC, but haven't seen it in the Help. It makes chamfers easy, and angled lathe cuts math-free.

Thanks.

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29 Oct 2011 12:55 #14374 by BigJohnT

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01 Nov 2011 16:43 #14491 by tenaja
Replied by tenaja on topic Re:g1 z1.0 angle5
Dang! Looks like it is time to upgrade my EMC...I'm running 2.3.

I actually saw that section on polar coordinates, but the description didn't sound like what I wanted. I will upgrade and give it a try.

Thanks, John.

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01 Nov 2011 19:07 #14496 by tenaja
Replied by tenaja on topic Re:g1 z1.0 angle5
Well, my update went ok, but the Polar Move commands fail. Since I am on a lathe, I am using G18 for the XZ plane. When I try to run the angle, I get the error:

Cannot use polar coordinate except in G17 plane.

I guess I will have to wait for it to be implemented for lathes.

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02 Nov 2011 00:03 #14499 by BigJohnT
Replied by BigJohnT on topic Re:g1 z1.0 angle5
Oh, you didn't mention you were running a lathe. Have you seen ngcgui? I use it on my lathe for 95% of my stuff... look in the subroutines section. I think my OD Taper is in there.

John

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02 Nov 2011 13:17 #14512 by andypugh
Replied by andypugh on topic Re:g1 z1.0 angle5
tenaja wrote:

Cannot use polar coordinate except in G17 plane.
I guess I will have to wait for it to be implemented for lathes.


You might have a long wait unless you push. I would be tempted to report it as a bug in the bug tracker (or maybe a feature request)
www.linuxcnc.org/content/view/48/13/lang,en/

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02 Nov 2011 13:44 #14514 by BigJohnT
Replied by BigJohnT on topic Re:g1 z1.0 angle5
Polar coordinates are only allowed in the XY plane iiuc... so it would be a feature request.

Polar Coordinates can be used to specify the XY coordinate of a move.


John

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