Re: Kmotion CNC on a lathe...
I did a retrofit on my Hardinge Conquest 42 with live tooling. Originally equipped with a Fanuc OT controller. I have to say that that a controls retrofit on a lathe is an order of magnitude more complex than a mill. There is a lot going on there, so be prepared for a project.
You only really need the rigid tapping and threading canned cycles, G84 and G32, everything else can be done from the CAM software. For the threading cycles the spindle and the Z axis need to be electronically geared together, hence the need for the canned cycles for these operations.
The canned cycles were designed to minimize the G code file size for old controllers with limited memory. Modern PC based controllers can handle a million or more lines of G code so this eliminates the need for compact files. I use Fusion 360 and have found I can easily set up any tool paths and cutting strategies needed for any normal lathe operation. The Haas Turn post works well on my lathe.
I don't know anything about Kmotion so you will have to determine if the G32 and G84 are supported.
Jim Dawson
Sandy, Oregon, USA