DOOSAN HM 1250 HORIZONTAL MACHINING CENTER

Technical Description

The Doosan HM 1250 is a high-performance horizontal machining center designed for heavy-duty and precision machining of large workpieces. It features extensive travel capacities with 82 inches (2100 mm) in the X-axis, 60 inches (1500 mm) in the Y-axis, and 60 inches (1500 mm) in the Z-axis, enabling the handling of sizable components. The machine is equipped with a robust spindle capable of reaching speeds up to 6000 RPM, delivering a high torque of approximately 3439 Nm for demanding cutting operations. The spindle uses a #50 taper with a 26 kW motor, supported by a gearbox-driven system that combines high speed and torque stability. It accommodates a large 1250 mm x 1250 mm twin pallet system for efficient workpiece loading and unloading, with a 1-degree pallet indexing capability for precise positioning. The HM 1250 includes a 90-position automatic tool changer and supports through-spindle coolant at 2.0 MPa pressure, enhancing cutting performance and tool life. It operates with a FANUC 31i-MODEL B CNC control system, offering advanced programming and automation features. The machine has a rapid traverse rate of 24,000 mm/min and a cutting feed rate of 12,000 mm/min, ensuring fast and accurate machining cycles. Additional features include a chip conveyor, splash enclosure, and potential for optional W-axis and 5-axis control upgrades. Its heavy-duty construction, linear pallet system, and high-precision preloaded ballscrews contribute to excellent stability, accuracy, and thermal error minimization, making it suitable for industries like aerospace, automotive, and heavy equipment manufacturing. The machine weighs approximately 31,000 kg and can handle workpiece loads up to 5,987 kg.