NHP Horizontal Machining Center Series

Doosan Machine Tools introduces the new NHP horizontal machining center series, built from the ground up for rapid metal-removal rates. Designed to meet the manufacturing demands of industries including automotive and aerospace, the 400mm pallet NHP 4000 and 500mm pallet NHP 5000 are feature-rich yet configurable for a range of applications, according to the company. 

The NHP machines come standard with a 15,000-rpm spindle with 40 horsepower and 169 ft-lbs of torque. For heavy cutting, a high-torque 15,000-rpm spindle with 223 ft-lbs is available, and a 20,000-rpm spindle is in development for customers with higher-speed precision applications.

Up to 1G acceleration/deceleration on X, Y and Z-axes significantly enhances productivity, delivering productivity increases as high as 25% over the previous model. Ball screw shaft and bearing cooling systems keep the temperature of fast moving axes stable, ensuring precision machining.

The new random access disc-type tool magazine allows high-speed 0.9 second tool-to-tool and 2.3 second chip-to-chip times. In addition to minimizing noncutting time, this design also reduces vibration, resulting in more stable operation.

In optimizing the construction of the machine, the footprint of the NHP has been reduced by 15 percent compared to the previous model, yet the machining area has been expanded by 24 percent. The three-point leveling design reportedly makes machine installation and maintenance much more convenient. The center-through bed chip management evacuates large volumes of chips quickly for enhanced efficiency.

The pallets can accommodate loads of up to 400kg (880 lbs), for the NHP 4000 and up to 500kg (1,100 lbs) for the NHP 5000, and both through-pallet and overhead hydraulic fixturing options are available. Additionally, the APC has been refined to achieve a 27 percent faster indexing time. 

“The new NHP Series machines deliver the productivity and precision that manufacturers need to stay competitive,” states Jim Shiner, director of sales and marketing at Doosan Machine Tools America. “From the spindle to the ATC to the APC, we’ve fine-tuned every component on these horizontal machining centers for non-stop world-class performance.”