Four-Spindle Gundrill Runs Unattended
IMTS 2018: The DeHoff G548-D4 from Kays Engineering is a four-spindle gundrilling machine designed for high-volume production of gun barrels.
The DeHoff G548-D4 from Kays Engineering is a four-spindle gundrilling machine designed for high-volume production of gun barrels. It automatically loads and unloads the barrels for unattended machining. As many as 48 barrels can be pre-loaded into the magazine holder. Lift-and-carry automation loads barrels in and out of the fixturing.
Four gundrilling spindles offer a barrel diameter range of 17 to 50 caliber and a maximum barrel length of 27" (686 mm). The machine has a cast iron drill head base with steel boxways as well as a hand-scraped and fitted saddle, gibs and straps. These features damp vibration and prolongs tool life.
Speed changes the rules. To maximize metal removal rate with a high speed spindle, follow some fundamental tooling considerations and mill at just the right rpm.
The force that holds the toolholder in the machining center's spindle can weaken over time. If you haven't checked drawbar force in a while, this may be the weak link in your process.
You know how to machine metals, but what about plastic machining? More specifically, glass-fiber-reinforced plastic? This machine shop has it figured out.