Mag says it followed the voice of the customer for input into the design of its modular HMC 1250 Series with a new 180,000-position A-axis tilt spindle for five-axis horizontal machining on large parts. The new 6000-rpm 46-kW tilt spindle joins an all-around 10,000-rpm 56-kW spindle, a high-speed 24,000-rpm spindle, a high-torque 2600-N•m spindle, and two live spindles (110- or 130-mm diameter) as headstock options.
The high-torque 80-kW spindle is especially suited for aerospace titanium cutting, the company says, while the live spindles extend W-axis reach by up to 800 mm, enabling deep-cavity milling to high precision with shorter, more rigid tool lengths. Standard on the live spindle, MAG's exclusive Z-axis thermal-compensation software dynamically offsets spindle growth to maintain tight tolerances.
The HMC 1250 Series is engineered for high-precision, high-productivity machining of large aerospace, power-generation, pump, valve, and off-road equipment parts. Major machine components, including the X-bed, Z-bed, and column are cast ductile iron, with 1250 x 1600 mm pallets, headstock, and rotary table housings of gray cast iron. A modular design provides a range of machine travels, 60- to 120-tool magazines, and two control choices, in addition to five spindle options, plus tilt capability. That application flexibility combines with maximum 3000-mm work zone swing range, 2050-mm work height capacity, and 7000-kg work load.
The machine offers 56 to 80 kW spindle power, 35 kN Z-axis thrust, and super-rigid, full-contouring hydrostatic rotary table. Productivity is enhanced with 40-m/min rapid traverse/feed rate and 15-s tool change (for up to 35-kg tools) to maximize in-cut productivity.
A standard 360,000-position contouring table enables precision four-axis machining of a variety of part geometries. The hydrostatic table provides a rigid machine platform, while a rugged worm gear drive with clamp securely holds axis position.
Meeting industry needs for tighter part tolerances and greater machining accuracies, the HMC Series comes standard with linear-scale feedback in X, Y, and Z axes, providing 8-micron positioning accuracy and 5-micron repeatability. Heavy-duty hardened and ground roller guide ways enable higher rapid traverse and acceleration/deceleration rates with double the load capacity and nearly 10 times the wear life of ball-type ways.