G02 does full Circle instead of small move

[babolino]

Hi all,

 

I´ve got a problem here.

 

In the programm below everything is shown fine in Cimco backplot also in the machine simulation. When I start the cycle the machine cuts through the part. This shouldn´t happen. Is there a parameter to change in the control?

 

Thanks in advance for your help!

 

 

G00 X-161.566 Y-34.463 Z0

N8770 G1 X-50.7

N8780 G3 X-49.384 Y-33.147 I0. J1.316

N8790 X-50.218 Y-31.922 I-1.316 J0.

N8800 G2 X-66.651 Y-15.399 I10.682 J27.057

N8810 X-68.374 Y-8.611 I42.016 J14.282

N8820 X-68.608 Y-5.008 I27.602 J3.603

N8830 X-68.609 Y-4.963 I27.836 J0.----------does a full Circle

N8840 X-68.523 Y-2.657 I32.043 J-.035

N8850 G3 X-68.42 Y.005 I-34.355 J2.662

N8860 X-68.522 Y2.662 I-34.458 J0.

N8870 G1 X-68.608 Y5.099

G0 Z20

[Greg Williams]

You need to break the arcs into180 deg or qaudrants, The setting is in the control def.

[Leigh @ Kodiak]

I would also suggest changing your minimum arc size in the control def to something .02"

[neilw20]

Hi all,

 

I´ve got a problem here.

 

In the programm below everything is shown fine in Cimco backplot also in the machine simulation. When I start the cycle the machine cuts through the part. This shouldn´t happen. Is there a parameter to change in the control?

 

Thanks in advance for your help!

 

 

G00 X-161.566 Y-34.463 Z0

N8770 G1 X-50.7

N8780 G3 X-49.384 Y-33.147 I0. J1.316

N8790 X-50.218 Y-31.922 I-1.316 J0.

N8800 G2 X-66.651 Y-15.399 I10.682 J27.057

N8810 X-68.374 Y-8.611 I42.016 J14.282

N8820 X-68.608 Y-5.008 I27.602 J3.603

N8830 X-68.609 Y-4.963 I27.836 J0.----------does a full Circle

N8840 X-68.523 Y-2.657 I32.043 J-.035

N8850 G3 X-68.42 Y.005 I-34.355 J2.662

N8860 X-68.522 Y2.662 I-34.458 J0.

N8870 G1 X-68.608 Y5.099

G0 Z20

 

Your I,J centers are relative, and your control is interpreting as absolute.

Not sure about your control, but G91.1 might set to relative IIJK mode.

Alternatively in your CAM program sel ABSOLUTE ARCS.

 

This program also needs a feed rate

[huskermcdoogle]

Probably has to do with your arc tolerance setting.

[neilw20]

Probably has to do with your arc tolerance setting.

 

I disagree. I put the code in my emulator, and it had crop circles.

Selected incremental arcs and it made sense.

Note the small values of I and J which is the center X and Y relative to the current X and Y value.

 

I do programming for a living.

[Guyinthedesert]

 

I do programming for a living.

 

I live for programming

[huskermcdoogle]

What I meant was his arc tolerance setting in the control. If it is greater than the distance between start and endpoint it will force the machine to do the other route. I have seen this before.

 

I just love what I do.

 

 

Good luck.

[babolino]

Hi all,

 

Thank you so much for your many replies!!!!

 

I´ll try all that.

 

I also want to say that the MPMaster works like a charm, the problem comes when using MPFan Post.

 

I´m in metric.

 

It´s solved for me thank you all again!!!