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.
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.
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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.
The arc center type is "delta start to center" for XY, XZ and YZ plane. Should i change it to radius?
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.
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
Thank you for helping me. I will experiment with it.
What is the machine you are programing for and how are settings in the transitions in the linking of the opti rough.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Cadcam
Turning Product Specialist for a Software Company, contract Programming and Consultant , Cad-Cam Instructor of Mastercam .