Weird Arc behaviour

[marben]

Anyone have any idea why this happens?
The outer cut consists of 7 stepdowns, the 6 first are weird like in the picture, but the last one is a perfect arc.
[img]

IMG_3364.jpg

[/img]

I have tried using uccnc post prossessor and also mach3 with same result, And I cannot see anything wrong in the code.

This is the code for the outer cut in question:

N3620G00Z60.000
N3630G00Y14.000
N3640G1Z46.429F1200.0
N3650G1X176.500F3600.0
N3660G3X237.500Y75.000I0.000J61.000
N3670G3X176.500Y136.000I-61.000J0.000
N3680G1X73.500
N3690G3X12.500Y75.000I0.000J-61.000
N3700G3X73.500Y14.000I61.000J0.000
N3710G1Z42.857F1200.0
N3720G1X176.500F3600.0
N3730G3X237.500Y75.000I0.000J61.000
N3740G3X176.500Y136.000I-61.000J0.000
N3750G1X73.500
N3760G3X12.500Y75.000I0.000J-61.000
N3770G3X73.500Y14.000I61.000J0.000
N3780G1Z39.286F1200.0
N3790G1X176.500F3600.0
N3800G3X237.500Y75.000I0.000J61.000
N3810G3X176.500Y136.000I-61.000J0.000
N3820G1X73.500
N3830G3X12.500Y75.000I0.000J-61.000
N3840G3X73.500Y14.000I61.000J0.000
N3850G1Z35.714F1200.0
N3860G1X176.500F3600.0
N3870G3X237.500Y75.000I0.000J61.000
N3880G3X176.500Y136.000I-61.000J0.000
N3890G1X73.500
N3900G3X12.500Y75.000I0.000J-61.000
N3910G3X73.500Y14.000I61.000J0.000
N3920G1Z32.143F1200.0
N3930G1X176.500F3600.0
N3940G3X237.500Y75.000I0.000J61.000
N3950G3X176.500Y136.000I-61.000J0.000
N3960G1X73.500
N3970G3X12.500Y75.000I0.000J-61.000
N3980G3X73.500Y14.000I61.000J0.000
N3990G1Z28.571F1200.0
N4000G1X176.500F3600.0
N4010G3X237.500Y75.000I0.000J61.000
N4020G3X176.500Y136.000I-61.000J0.000
N4030G1X73.500
N4040G3X12.500Y75.000I0.000J-61.000
N4050G3X73.500Y14.000I61.000J0.000
N4060G1Z25.000F1200.0
N4070G1X176.500F3600.0
N4080G3X237.500Y75.000I0.000J61.000
N4090G3X176.500Y136.000I-61.000J0.000
N4100G1X73.500
N4110G3X12.500Y75.000I0.000J-61.000
N4120G3X73.500Y14.000I61.000J0.000
N4130G00Z60.000
N4140G00Z70.000
N4150G00X0.000Y0.000
N4160M09
N4170M30
%

[Battwell]

it displays and runs fine here.
if its displaying correctly on screen in uccnc toolpath but not cutting correctly it must be your cv settings are way off ?

[marben]

It looks good on the screen and in simulation.
I use the default cv settings that came with uccnc. What would be "normal" cv settings and what needs to be considered when setting them?

[Dan911]

it displays and runs fine here.
if its displaying correctly on screen in uccnc toolpath but not cutting correctly it must be your cv settings are way off ?

It is odd though that the other 3 arc's cut ok with these same settings.

Dan

[Vmax549]

Try turning teh CV OFF then rerun teh code to see IF it is CV related.

(;-) TP

[marben]

Try turning teh CV OFF then rerun teh code to see IF it is CV related.

(;-) TP

I've tried that with same result only more jerky.

it displays and runs fine here.
if its displaying correctly on screen in uccnc toolpath but not cutting correctly it must be your cv settings are way off ?

It is odd though that the other 3 arc's cut ok with these same settings.

Dan

What's even more odd is that on the final depth cut it cuts a perfect arc.