NHP Series

The NHP Series is a high productivity machining center that offers high productivity and ultimate precision with minimized non-cutting time, stable machine structure and thermal distortion correction function. The NHP 4000 delivers with automatic tool changes in under a second and 15,000 RPM spindle with axes acceleration of up to 1G, thru-spindle and flood coolant, center-thru chip evacuation, highly precise linear guides, larger work area, and a smaller footprint.

Unleashing High Productivity and Efficiency

The NHP 4000 series redefines high-performance horizontal machining, delivering exceptional productivity and cost-effectiveness in a compact footprint. Designed as a next-generation solution for small to medium workpiece manufacturing needs, this machine integrates a powerful 15,000 RPM spindle with rapid axes acceleration up to 1G, ensuring high material removal rates daily. Its design prioritizes minimized non-cutting time through features like automatic tool changes in under a second. With its robust capabilities, the NHP 4000 is optimized for industries demanding fast throughput, consistent precision, and superior performance for complex parts.

Engineered for Unmatched Precision and Structural Stability

Precision and stability are foundational to the NHP 4000's design, engineered for demanding applications. It features a one-piece Meehanite cast iron bed with a step guide structure, offering excellent rigidity, dampening, and vibration absorption. High-performance linear guideways, specifically large 45 mm roller linear motion guides, provide three times more rigidity and twice the life compared to ball bearing types, ensuring optimal weight and force distribution. Furthermore, the machine incorporates a Smart Thermal Monitoring software with hardware sensors on the spindle and main casting bed, which compensates the Z-axis for thermal growth to maintain part tolerances. The Big Plus Spindle System further enhances rigidity through simultaneous taper and flange contact between the machine spindle and tool holder.

Optimizing Workflow with Advanced Automation and Intelligent Management

Optimizing workflow and reducing downtime are key benefits of the NHP 4000, achieved through advanced automation and efficiency features. The servo-driven drum style Automatic Tool Changer (ATC) facilitates tool-to-tool changes in as little as 0.9 seconds for tools under 8 kg, utilizing random access for instant tool availability. An Automatic Pallet Changer (APC) boasts an 8-second pallet change time, complemented by manual pallet rotation at the setup station to enable part changeover during machine operation, maximizing uptime. Comprehensive coolant management, including 215-225 psi through-spindle coolant, flood coolant, base flushing, and an overhead shower wash-down, ensures efficient chip evacuation. The eco-friendly grease lubrication system further reduces maintenance and waste.

Advanced Control and Process Monitoring for Enhanced Reliability

The NHP 4000 is equipped with a suite of technologies designed to enhance operational control and safeguard manufacturing processes. It features a Fanuc 31i-B Control system and AICC II 1000 block look-ahead for advanced machining capabilities. Tool Load Monitoring continually checks motor loads, providing wear and breakage settings that trigger alarms and stop operations to protect the machine, tooling, and parts. Adaptive Feedrate Control dynamically adjusts the feedrate based on spindle load, reducing cycle times and preventing air cutting. The machine is Renishaw probe ready, including the RMI-Q radio receiver and GUI software, enabling precise part feature finding and tool setting. These integrated systems deliver a high level of control and security for complex machining tasks.

FAQ Section

What are the key performance specifications of the NHP 4000's spindle?

The NHP 4000 features a 15,000 RPM spindle with a motor offering 18.5 / 37 kW (25 / 49.6 hp) and a torque of 303 Nm (223.6 ft-lbs) (S3 10%). It boasts rapid acceleration from 0 to 15,000 RPM in 1.5 seconds and deceleration from 15,000 RPM to 0 in 1.99 seconds. The Big Plus Spindle System ensures maximum rigidity through simultaneous taper and flange contact.

How does the NHP 4000 ensure high precision and stability during machining operations?

The NHP 4000 achieves high precision and stability through several integrated features. It utilizes a one-piece Meehanite cast iron bed for superior rigidity and vibration dampening, large 45 mm roller linear motion guides that offer three times more rigidity than ball bearing types, and cooling through the center of the ball screw shaft, support bearings, and ball nut for thermal stability. Additionally, Smart Thermal Monitoring software with hardware sensors on the spindle and main casting compensates for thermal growth, maintaining part tolerances.

What features contribute to the NHP 4000's high productivity and reduced non-cutting time?

The NHP 4000 is engineered for high productivity with features such as a 0.9-second tool-to-tool change time via its 60-tool drum type double arm ATC, and an 8-second pallet change time with its automatic pallet changer. Its rapid traverse rates of 60 m/min (2,362 ipm) across X, Y, and Z axes with 1G acceleration minimize movement time. Furthermore, Tool Load Monitoring and Adaptive Feedrate Control optimize cutting conditions and prevent wasted cycle time by detecting air cuts.

What are the coolant and chip management capabilities of the NHP 4000?

The NHP 4000 features a comprehensive system including through-spindle coolant delivering 215-225 psi directly at the tool tip, along with air through spindle functionality. It provides flood coolant from a large 760-liter (200-gallon) separate tank with an oil skimmer. For efficient chip disposal, it includes center-through chip evacuation with base flushing and an overhead shower coolant wash-down to prevent chip accumulation.

Can the NHP 4000 be integrated into automated manufacturing systems?

Yes, the NHP 4000 is designed for integration into automated systems. It can be equipped with optional Linear Pallet Systems (LPS) or Rotary Pallet Systems (RPS), which are cost-effective solutions for providing multiple pallets to support longer periods of unmanned operation or reduced setup times in varied production environments. These systems enable intelligent production scheduling and real-time monitoring.