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On Display At IMTS: Doosan HM 6300 Heavy Duty Horizontal Machining Center
West Caldwell, NJ - With travels of 39.4” x 31.5” x 31.5”, powerful drives and a high torque spindle motor, Doosan’s HM 6300 horizontal machining center produces popular-sized parts from hard-to-cut ferrous and non-ferrous metals, and does so quickly and to exacting tolerances.
The HM 6300 is rigidly built to withstand heavy and interrupted cuts while delivering high speeds and exceptional accuracy. Heavily ribbed Meehanite castings dampen vibration and help dissipate heat. High torque servos, coupled directly to the ball screws, eliminate gears, thereby eliminating backlash and servo drag. Pretensioning the X and Z axes ball screws provides superior positioning repeatability, while widely spaced box guideways establish a sturdy foundation along all axes.
Heavy duty, 50 taper spindles are powered by 25 Hp motors generating 6,000 rpm and 1680 ft-lbs torque. A stepped-sleeve bearing permits precise adjustment, and eliminates assembly damage common to lock-nut systems. A Big Plus tooling system creates contact between the machine spindle face and the toolholder flange face, as well as along the machine spindle taper and toolholder taper shank. This imparts greater rigidity for higher precision and extended tool life.
The ATC is separated from the machine to prevent vibration or similar factors that might otherwise compromise accuracy. Tools are selected by the fixed address method to prevent collision when using large-sized tools. A bi-directional, shortest path procedure keeps tool-to-tool times at a quick 2.5 seconds.
Precision is further enhanced through a combination of coolant chiller systems and cooling jackets along the ball screw shaft and ball screw nuts. Blasts of air clears removes chips during pallet changes, and a linear feedback system along the X, Y, and Z axes provides closed loop feedback for maximum machining accuracy.
The HM 6300 is equipped with a rotary shuttle APC. Features include high reliability and wide working areas for easy setup. The table indexes in 1 deg. increments (0.001 deg. optional). The 24.8” x 24.8” table supports a workpiece load of 2645 lbs. Pallet change time is 25 seconds, 90 degree indexing takes just 3.7 seconds. A variety of multi pallet and linear pallet systems for the HM 6300 are available.
The HM 6300-31iA5 is one of five sizes of HM models, the largest of which features a 49” square pallet with a load capacity of 6,600 lbs. The HM 6300 will be demonstrated by Doosan at booth # 8100 in the front row at IMTS.
About Technical Equipment Sales:
Technical Equipment Sales (TES) of Cincinnati, Ohio distributes Doosan machine tools in Ohio, Illinois and Kentucky. In addition to new machine sales, TES provides engineering and service support to manufacturers in all industries, including medical, aerospace, and electronics.
