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Multitasking Machine Automatically Loads/Unloads Parts

The Quick Turn 250SMY with GR100 gantry robot is one example of how Mazak’s flexible Quick Turn 200/250 Series of CNC turning centers can be configured to achieve high throughput. Main turning spindle serves as a full-functioning C-axis.

A GR100 gantry robot automates part loading and unloading on Mazak’s Quick Turn 250MSY turning center. The robot is programmed via the machine’s Mazatrol SmoothG CNC.

To help manufacturers achieve the highest possible throughput, Mazak Corp. (Florence, KY) designed the Quick Turn 200/250 Series of CNC turning centers as a flexible machine base that supports multiple production configurations. One example, the Quick Turn 250MSY multitasking turning center with GR100 gantry robot, offers “Done-In-One” part processing with automated part loading/unloading.

The robot requires no special robot/machine interface to integrate with any Quick Turn 200/250 Series machine, including the 2-axis, milling, Y-axis and/or second spindle versions; and is programmed via the machine’s Mazatrol SmoothG CNC. Two table configurations are available, as is end-of-arm tooling with three-jaw grippers.

The robot’s simple-to-configure, D3, two-sided, three-jaw gripping hand handles parts 7 inches in diameter, 6 inches long, and weighing 44 pounds. The D3 hand allows shops to load/unload a wide variety of chuck work.

To reduce machine idle time, a servo-driven automatic door allows robot entry into the machine envelope at a 3,937-ipm rapid rate on the robot’s A axis and 7,087-ipm rapid rate on its B axis.

The machine’s headstock features a 10-inch main chuck mounted on a 35-hp, 4,000-rpm integrated spindle motor that generates 343 ft-lbs of torque for heavy-duty metal removal. To accurately position parts for square-facing/slotting cuts and precisely drilled holes, the main turning spindle also serves as a full-functioning C-axis that’s programmable in 0.0001-degree increments. A second spindle with 15 hp, 6,000 rpm, and 6-inch chuck enables the machine to automatically transfer parts and perform secondary operations.

The machine’s 12-position, direct-drive turret eliminates the use of belts for improved part surface finishes and reduced maintenance. It can be configured with either VDI or bolt-on tooling. The turret’s rotary tool spindle delivers 10 hp; 6,000 rpm; and 52 ft-lbs of torque. With an optional tooling package, 10,000 rpm is available.

The two table configurations include a two-pallet changer that allows parts to be positioned in rows across each table and a 16-position rotary stocker system that stacks parts on each individual stocker. The two-pallet changer makes it possible for operators to access the pallet on one table while the other table is shuttled into the load/unload area for uninterrupted machine operation. The rotary table design with stacked parts allows for greater initial density of parts but without access during automatic operation. A discharge tray can be added for unloading specified parts for inspection.


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