CNC Mill/Drill/Tap Centers Feature High-Speed, High-Torque and High-Volume Machining

Absolute Machine Tools offers the Seiki KT Series CNC mill/drill/tap centers in six affordable models with three distinct spindle configurations to meet any mold builder’s needs, all within a small footprint.   

The standard spindle configuration is a 0-15,000 rpm, 28-hp peak/6.5-hp continuous direct-drive spindle. An optional 0-10,000 rpm direct-drive, high-torque (120 Nm/88.5'/lbs) 28-hp peak/11.3-hp continuous spindle is said to provide 40 taper milling performance. Finally, an optional, high-speed 0-24,000 rpm, 35-hp peak/5-hp continuous direct-drive spindle is available for applications such as mold detail machining. All three spindles offer BBT-30 dual contact spindle taper and rigid tapping speeds up to 6,000 prm, the company says.

Travels amongst the six models range from 20.5-27.6" in the X-axis, 14.17-16.5" in the Y-axis and 11.8-16.9" in the Z-axis, with an optional twin-spindle design offering ±0.079" (2 mm) U-axis. Absolute Machine Tool says rigidity is built into the Seiki mill/drill/tap center via a Meehanite cast-iron frame and rigid linear slideways, ensuring fast, precise movement. The Seiki KT Series’ Class 3 36-mm-diameter ballscrews with a double-nut preloaded design is said to enable a standard rapid traverse rate of 2,362" per minute in the Z-axis with acceleration of 1.0 G. 

Moreover, Seiki KT series CNC machines are offered with either a standard moving table design or a three-axis moving column-type design with a fixed table when equipped with the front load APC (automatic pallet changer). The APC unit, located in front of the machine, reportedly provides easy operator access, and can exchange tables in 4.5 seconds, using a hydraulic cylinder to rotate the pallet and a hirth coupling hydraulic clamping mechanism to clamp the pallet in place without lifting for repeatability. 

Turret-type and arm-type toolchangers are also available. Models including standard turret-type tool changers contain 21 tools with bi-directional-fixed selections, 1.07-second tool-to-tool and 1.36-second chip-to-chip times, as well as 0.1-second adjacent station indexing time or 1.8 seconds in 180°.