Haas Automation recently expanded its drill, tap and mill product line with a pair of high-speed, lean-style machining centers—the DT-2 and DM-2—that reportedly provide the same high acceleration rates, fast axis speeds and short tool change times as their smaller brethren. Yet, the new machines offer an additional 8" (203mm) of X-axis travel and table length, with only a slight increase in footprint.

The new DT-2 and DM-2 are identical in specifications to the DT-1 Drill/Tap Center and DM-1 Drill/Mill Center, except for spindle taper and tool changer, according to Haas. The DT-2 is a BT30 taper machine, with a 15,000-rpm inline direct-drive spindle and a high-speed 20+1 side-mount tool changer. It is available with an optional 20,000-rpm spindle.

The DM-2 is a 40-taper machine, with a 15,000-rpm inline direct-drive spindle and a high-speed 18+1 side-mount tool changer. The new DT and DM both allow high-speed rigid tapping to 5,000 rpm, with up to four times retract speed to shorten tapping cycles.

Both machines offer a 28" x 16" x 15.5" (508mm x 406mm x 394mm) work cube and a 34" x 15" (864mm x 381mm) T-slot table.

The increased table size, longer X-axis travel, and larger work envelope accommodate multiple fixtures and multi-spindle rotary tables for increased production and setup flexibility, according to Haas. Yet, their compact footprint still allows multiple machines to be placed side-by-side for efficient use of valuable shop floor space.

The spindle on both machines features a 15 hp (11.2 kW) vector drive system that provides 62 Nm of cutting torque. Cutting feedrates for both machines are 1,200 ipm (30.5 m/min), and 2,400 ipm rapids and high acceleration rates combine to shorten cycles times and increase throughput.