hi i thought you were going to discuss that an ( Y ) lathe with live tooling & proper fixtures & custom jaws & custom chuck & quick change setups is quicker than a vmc mill, especialy for small parts
the hydraulic chuck is a very tough rotary axis:
... rotated synced with the M spindle : hobbing, flat-cuts, skiving
... rotated it free and the M spindle too, without syncronization : grinding
... rotated it free, M stop: rotary broaching
... keep it steady, rotate the M axis : excentric shapes, broaching
... rotate it intermitently, rotate the M axis ( add Y ) : 3 & 4 axis mill
... etc
a mill can't deliver turning operations as fast as a lathe, but sometimes is better to interpolate those operations, so to avoid the auxiliary time that comes with moving the parts to a lathe
if you wish to avoid interpolation on a mill, goth 4 & 5th axis + google d'andrea tools and pls check post #9 & #10 in here :
https://www.cnczone.com/forums/okuma...f-big-www.html
more $$, more customization / kindly