Multitasking Turning Centers Offers Y Axis for Milling, Drilling

Doosan’s Lynx 220LSY high-speed multitasking turning centers feature a Y axis with milling and drilling capabilities, eliminating the need for secondary machining operations that might otherwise be performed on, say, a milling machine.

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Doosan’s Lynx 220LSY high-speed multitasking turning centers feature a Y axis with milling and drilling capabilities, eliminating the need for secondary machining operations that might otherwise be performed on, say, a milling machine. The result is consistent part quality, predictable throughput and no operator intervention, the company says.

The bed is a single-piece Meehanite casting with a heavy ribbing to prevent deformation and twisting. The guideways are on a 30-degree angle to maintain a minimal and constant distance from tooltip to guideway, thus ensuring maximum rigidity and virtually no deformation under heavy loads.  The slant angle also provides good chip flow as chips and coolant slide downward into the chip pan.

Roller-type linear motion guideways are used on all axes to allow high rapid traverse rates of 1,181 ipm on the X axis and 1,417 ipm on the Z axis, as well as 394 ipm on the Y axis. XYZ travel measures 8.07" × 4.13" (±2.065") × 22. " The swing-over bed measures 23.6", the swing-over carriage 15.7", maximum turning diameter 11.8" and maximum turning length 20.0".

According to the company, the Y axis greatly increases the number of workpieces that can be machined complete without using expensive custom rotary toolholders. It enables the milling cutter to machine above or below centerline. Possible operations include drilling and tapping of off-center crossholes, milling of flats, and roughing and finishing of keyways.

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