Hey yall,

I work for an orthopedic implant manufacturer. We make countless bone screws, many of which are cannulated (thru hole that's gun drilled).

Has anyone ever gun drilled while simultaneously whirling OD threads? The gun drill would have to be live and the material rotation controlled in C axis for the whirling. I was thinking about pecking the gun drill the per turn / whirl segments either during the pinch turning (if my endworking drills clear the whirler below) or during the whirling itself.

Anyone have experience with this or suggestions?

FYI material is Ti 6Al-4V, thread major is 6.5mm and machine is a Tornos Deco 20a.

Thanks for any suggestions.