[Epiphany]

Hello,

I have a minor problem when cornering on my mill. Sometimes depending on the corner radius and speed (.25 radius at 15 IPM) I get segmented corners instead of being smooth.You can feel the servo making jerky moves on these corners. I am using KMCNC and have played with the trajectory settings but maybe I have missed the correct combination or setting altogether. I have considered that this may be a servo tuning issue as well but jogging seems to be smooth and trouble free. Anyone have any advice on this?

Thanks.

[TomKerekes]

Hi Epiphany

What is the GCode doing? A G2/G3 Arc? Or line segments? Can you see segments in the GCode Viewer? (You will need to run not simulate). What are your TP Settings?

Regards

[Epiphany]

Tom,

Thanks for the reply.

Can you see segments in the GCode Viewer?

The G code viewer does not show segments. (I ran the machine with no tool to verify)

What are your TP Settings?

Break Angle- 5
Look Ahead- .5
Collinear Tolerance- .001
Corner Tolerance- .0001
Facet Angle- 5

Here is snippet of the code I am running.

(PROGRAM NAME - TOP BRACKET.NC)
(POST -AAA_Tree)
(DATE - TUE. 04/01/2014)
(TIME - 01:23PM)

N01 G20 G40 G49 G80 G90 G59.3
N02 G0 G90 G53 Z0.

(JOB 1 PROFILE)
(SLOT)

N03 M01 ( T1 M6)
N04 S2200 M03
N05 G00 G90 G54 X-3.1425 Y-3.376
N06 G43 H1 Z.1
N07 G01 Z-.1 F10.
N08 Y-3.126 F16.
N09 G17 G02 X-3.5185 Y-2.75 I0. J.376 F11.2
N10 G01 Y-2.36 F16.
N11 G02 X-3.1425 Y-1.984 I.376 J0. F11.2 *Segmenting seems to be the worst here
N12 G01 X-2.9967 F16.
N13 G02 X-2.9242 Y-1.9911 I0. J-.376 F11.2
N14 G03 X-2.8425 Y-1.999 I.0817 J.416
N15 G01 X-2.1875 F16.
N16 G03 X-2.1875 Y-1.001 I0. J.499 F11.2
N17 G01 X-2.8425 F16.
N18 G03 X-2.9242 Y-1.0089 I0. J-.424 F11.2
N19 G02 X-2.9967 Y-1.016 I-.0725 J.369
N20 G01 X-3.1425 F16.
N21 G02 X-3.5185 Y-.64 I0. J.376 F11.2
N22 G01 Y-.25 F16.
N23 G02 X-3.1425 Y.126 I.376 J0. F11.2 *And here
N24 G01 Y.376 F16.
N25 G00 Z.1

Thanks for the support.

[TomKerekes]

Hi Epiphany,

What Version are you running? Are you selecting "Arcs to Segments" ?

Try Setting:

Collinear Tolerance- .0001
Facet Angle- 1

Regards

[Epiphany]

Tom,

Sorry been out of town.

What Version are you running?

4.31s

Are you selecting "Arcs to Segments" ?

No, this is not selected.

Try Setting:

Collinear Tolerance- .0001
Facet Angle- 1

This worked fantastic. Thanks so much.

This machine is so much more user friendly now its amazing and now has rigid tapping to boot. Great product and support.

Getting ready to start the next machine. Mori Seiki SL1 lathe. What is the current status of the single point threading, is the canned cycle supported or will this have to be done in C?

[TomKerekes]

Hi Epiphany,

KMotionCNC Version 4.32a supports G32 for single point Threading. You shouldn't need any C Programming. But not yet G76.

please see this post.

Leo made a video. See:



More work is needed to make KMotionCNC more Lathe friendly. But the basic functionality is working.

Regards