Almost looks like it would be a chamfering tool for circles. Where do the shafts join into the disks, assuming on the side we don’t see? The 2-1/2 and 3 pieces top right, are they exactly that size at the tip, or the base, or somewhere in the middle. Those sizes seem too big for car valve stuff. The bells, center left, seem like they are for centering you in a hole, and the working larger below a surface ( like in an engine cylinder with the head on) which seems really odd.
The teeth look like they move vertically in the disks, is that depth fixed, variable, or does it change while in operation?
Cool whatzit tho, hope someone knows.