Multi-spindle drilling machine - GIF

[Toolmaker51]

I would think if this machine was for production, it would have a fixture to locate the part being drilled instead of the hodge podge clamping method used.......snipped......

Part location is unclear, especially regarding machined ears around just a portion of holes. I suspect part is profiled elsewhere, previously mounted on the plate (aka pallet) which does have location and orientation points.
GIF length is about 10 seconds. Part could be stainless, chips say it's cast. The piping spool being made appears to be from the solid, for a high demand installation. Peck drill 8 holes of 5/8" or 3/4" diameter in equal amount of time with a single step bit and coordinate changes?

Uhhh, no.

Can't recall any instance seeing or hearing of a multi-spindle head mounted in a CNC mill. So, in sufficient numbers, a second operation would outpace a tool changer very, very quickly.

Two common multi-spindle drivers are NATCO machines, and Commander mounted units. Commanders can probably set up to 8 places, IIRC, NATCO up to 27.