u/Hardworking-Banana

▲ 3 r/CNC

Hello everyone i was wondering whats the wasiest way is to disengage the C-Axis on my lathe. I am an apprantice and people at my workplace dont really operate lathes. I kind of am the only one and have to learn stuff by myself.

We use fusion360 and i have an issue with how it operates the c axis. If i mill a pocket the program reverses the c axis rotations until it reaches zero before it starts finsihing the pocket. Same thing happenes if i want to mill multiple features. It always rewinds which obviously takes a lot of time.

Simplest way i could think of would be something like

G54 G00 Z10.
„G- or M-Code to disenfage C-Axis“
Nest milling operation with reangage of the c axis

Is there something like this? Th thought just came across my mind but i can‘t fiddle around woth it roght now since i am home. I will try thid tomorrow but i currently do not know the proper code so if you guys know it i woulf be thankful for your help

EDIT: With C-Axis i mean the main spindle which rewinds rotations inbetween machining steps before continuing.

EDIT 2:

After fiddeling around a bit i got it.

Inbetween mill operations i can use

G00 Z5; (Returning to a safe position)
M155; (Disengage C-Axis)
M154; (Engage C-Axis)
G00 C0; (Return C-Axis to zero instantly or whatever alignment i need)

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u/Hardworking-Banana — 22 days ago