[josephsprague]

I have been programming mainly 2D for a couple of years now. For the past couple of months i have been programming and running more complex aluminum parts. Every once in awhile when i use Dynamic Optirough on mastercam x9 I run into this annoying problem where my cnc decides to randomly and unpredictably finish an arc and come full circle and then continue on its original programmed root. I have verified my g-codes over and over and i see no problem.

[Jim Dawson]

Check your IJK mode. I don't remember the exact name in MasterCAM, but there is a parameter for that. I went through this a while back.

[josephsprague]

The arc center type is "delta start to center" for XY, XZ and YZ plane. Should i change it to radius?

[Jim Dawson]

Don't change it to radius unless your machine can digest that, older CNC controllers normally don't use radius. You are in the right area, there are a few other options there. Try a different one and see what happens. I just did it with trial & error, I don't remember what one worked for me. You should be able to see the result if your machine has a tool path graphic.

[CNCMAN172]

The issue is you have your CAM program set to use Absolute moves when doing curves/arcs when you set it to incremental moves for Arc and the problem will be gone

Russ

[josephsprague]

Thank you for helping me. I will experiment with it.

[davoslab]

I have been programming mainly 2D for a couple of years now. For the past couple of months i have been programming and running more complex aluminum parts. Every once in awhile when i use Dynamic Optirough on mastercam x9 I run into this annoying problem where my cnc decides to randomly and unpredictably finish an arc and come full circle and then continue on its original programmed root. I have verified my g-codes over and over and i see no problem.

Hi.
If your post generate arcs with
G3 X Y R than try to change, if possibly, to G3 X Y I J. In my case i never get problems with arcs again.
Ragards.

Enviado desde mi SM-A520F mediante Tapatalk

[seijack]

I do not think incremental/absolute arcs would make a difference. I think you would need to go into the Control Def > arcs > check 360 degree arcs > check break arcs 180 or at quadrant, what ever your machine can handle..

[cadcam]

What is the machine you are programing for and how are settings in the transitions in the linking of the opti rough.