Compact CNC Turning Center with Automatic Loading/Unloading
October 1, 2014
The new Tongtai HS-22 high speed, high precision slant bed turning center distributed by Absolute Machine Tools was featured turning components at IMTS 2014. The model at IMTS was equipped with an optional automatic part loading/unloading system. "It is unique in that it functions from the end of the machine rather than a gantry system that operates from the top of the machine," said a company spokesperson. "It features a swap time of only 4.8 seconds. Further, a 14-pallet work stocker enables unattended machining."
The Tongtai HS-22 offers a swing over bed diameter and standard turning diameter of 8.66". Maximum cross travel is 6.1" (X-axis) and maximum longitudinal travel is 8.66" (Z-axis). Maximum turning length is 7.87". Design and construction features of the HS-22 include precision box ways and large servo motors that, according to the company, provide a rigid and compact structure resulting in accurate positioning. To help ensure precision and thermal stability, the headstock, tailstock, turret and saddle are all mounted on a one-piece 30° slant bed. The coolant tank is separate from the machine base to prevent heat transfer from the coolant to the machine casting, which contributes to precision and promotes easy chip removal and maintenance tasks.
The spindle assembly is mounted using double row roller bearings in conjunction with angular contact ball bearings for improved rigidity and accuracy. The spindle quill inner and outer linings are precision ground for better fit with the spindle, which is helpful for concentricity and accuracy. The 6,000 RPM (or optional 4,500 RPM) spindle is driven by a 15 HP high-torque motor, providing power for a wide range of applications.
A 12 station bi-directional turret provides 0.45 second indexing to the adjacent tool and 1.8 seconds to the 180° opposite tool station and provides coolant through the toolholders. C-axis and live tools are available as an option with the servo turret hosting VDI-40 quick-change tooling featuring 0.3 indexing time and a 7.5 HP, 6,000 RPM milling motor. A rear exit chip conveyor and a 6" diameter three-jaw hydraulic chuck are standard.
For more information contact:
Steve Ortner
Absolute Machine Tools, Inc.
7420 Industrial Parkway
Lorain, OH 44053
440-960-6911
sales@absolutemachine.com
www.absolutemachine.com
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