Smooth C Axis Motion

[Alex Munro]

Hi all,

I seem to have an issue where the C-axis motion doesn't move smoothly in conjunction with any X and Y moves. It will hold the initial C Axis position until the last moment, stop, move the C-axis to the new value and then continue with the rest of the travel.

In the Mastercam simulation, it moves smoothly between the two positions whilst moving X and Y, so it's obviously how the post is producing the gcode.

I have attached a sample piece of code that shows the C-axis behaviour. Between lines 1089 and 1599 is where it should be moving C but it does not.

Does anyone know why this would be happening and how to fix it?

Thanks
Alex

[Clint Buechlein]

Alex,

You can talk with your reseller to see about something in the post, but likely it isn't something that can be corrected with a flip of the switch. Mastercam doesn't output any transition C motions to posting when the tool is vertical.

-Clint-

[Alex Munro]

Thanks Clint.