G2 and G3 for lathe

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20 Jun 2017 08:53 - 20 Jun 2017 08:57 #94718 by alexandrub

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File Name: piesa_2017-06-20.dxf
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Heloo,

I am trying for 2 days to write a code just for the arc shape of this piece for my lathe but I receive an error thath the radius to end of arc differs to radius to start....please help me with a Gcode for this shape.


Thank you.
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Last edit: 20 Jun 2017 08:57 by alexandrub. Reason: try to attach

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20 Jun 2017 10:35 - 20 Jun 2017 11:31 #94721 by massimodamassa
Replied by massimodamassa on topic G2 and G3 for lathe
Try this gcode.

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File Name: piesa_2017-06-20.ngc
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Last edit: 20 Jun 2017 11:31 by massimodamassa.

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20 Jun 2017 12:36 #94723 by andypugh
Replied by andypugh on topic G2 and G3 for lathe
For a lathe arc you need to be careful about radius mode and diameter mode.

Also be aware that in a right-handed coordinate system and a front-toolpost lathe the sense of G2 and G3 is as viewed from underneath.

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