Absolute Machine Tools TMT-2000T3Y2 Turning Center

Machine tool importer Absolute Machine Tools introduces the TMT-2000T3Y2 Turning Center from Tongtai Machine & Tool Co. Ltd.

Engineered to turn high-volume complex parts from bar stock, the machine features a 20hp main spindle, 25hp sub-spindle, and 3 servo-driven turrets (2 upper and 1 lower), with BMT-65 live tools. Workpiece capacity dimensions include swing over the machine bed/front cover of 28.3" (1,415mm), swing over the carriage of 12.2" (305mm) and maximum turning diameter of 12.6" (315mm).

The main 20hp, 4,500rpm spindle can accommodate 2.5" (65mm) diameter bar stock while the 25hp 6,000rpm synchronous sub-spindle can handle bars of 2" (51mm) diameter. Both spindles feature a full contouring C-axis. To maximize rigidity and accuracy, both spindles employ precision double-row roller bearings in conjunction with angular contact ball bearings.

The machine’s three 12-station bi-directional servo-driven BMT live turrets provide 0.3 second indexing as well as coolant-through tool holders. Each turret has a 7.5hp, 6,000 spindle motor for live tools. The Y-axis on both upper turrets provides turret movement for complex off-center milling functions.

The machine’s mono-block cast 75° slant bed maximizes rigidity and enhances machine accuracy. The configuration permits free flow of chips directly into the chip conveyor as well as easy access to the spindles and turret, simplifying set-up processes. The frame design also allows the X- and Y-axes to be perpendicular to each other, providing true linear positioning and facilitating simplified programming and machine alignment.

To ensure precision and thermal stability, the headstock, sub-spindle, and saddles are all mounted on the same plane. To further enhance accuracy and precision, the double nut type balls crews are pre-tensioned to eliminate thermal growth. Resulting positioning accuracy is +/- 0.0002" (0.05mm) and repeatability is +/- 0.0001" (0.0025mm). Roller-type linear ways of 1.8" (45mm) diameter in all axes enable permit high rapid traverse rates.