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Mori Seiki’s NHX10000 high-precision HMC is the largest model in the NHX series of X-class HMCs. The machine can accommodate workpieces as large as 78.75" × 63", and it features a maximum loading capacity of 11,023 lbs. The HMC is well-suited for machining large workpieces and difficult-to-cut materials for the aircraft, construction machinery and energy industries, the company says. The high-precision, high speed machine is designed for reliability. It features single-pallet specifications, Mapps IV + Esprit and compliance with safety standards.
The box-in-box construction supports the saddle at both sides. The symmetrical structure, with respect to the spindle, minimizes thermal displacement. Additionally, Driven at the Center of Gravity (DCG) technology is used for the X- and Z-axis drive. DCG controls vibration by driving moving parts at their center of gravity using two ballscrews. This is said to improve accuracy, reduce machining time and extend tool life.
The HMC can achieve roundness of 2.1 μm (when equipped with a scale), as well as a rapid traverse rate that is 2.5 times faster (50 m/min.) than the previous model. Vibration control improves surface quality, the company says.
An optional full indexing table equipped with Direct Drive Motor (DDM) is available for the B-axis drive. By transmitting the drive power directly to the rotary axis, DDM virtually eliminates backlash.
What’s Behind Door Number Three?
While most shops are producing shorter aerospace parts on five-axis machines or larger parts on gantry-type equipment, this shop found its niche somewhere in the middle thanks to an advanced profiling machining system from Mazak.