China Suppliers NXX-46ESY Slant-Bed Twin-Spindle Turn-Mill Center - High-Performance Machining Factory
Machine Structural Features
Core Spindle System
Engineered for sustained heavy-cutting conditions, the spindle features a robust integral sleeve-type design. It integrates a "Three-Front, Two-Rear" configuration of imported precision bearings, powered by a rear-mounted servo motor. This combination delivers a consistent output of high speed, high precision, and exceptional rigidity.
Utilizing a 30° slant-bed layout, the machine base is cast from high-quality resin-sand cast iron. The internal structure features a dense reinforcement ribbing system, delivering a superior combination of high rigidity, exceptional vibration damping, ergonomic operator convenience, and efficient automatic chip evacuation.
High-Speed Precision Feed System
The X and Z axes are equipped with high-rigidity, heavy-duty linear guideways and precision pre-tensioned ball screws. Driven by direct-coupled servo motors and supported by an automatic forced lubrication system, the axes achieve rapid traverse speeds of up to 30 m/min while ensuring superior positioning accuracy and minimal thermal deformation.
Equipped with a high-precision Y-axis box-way dual-side servo power turret, this system offers exceptional reliability and low failure rates. It supports rapid, nearest-path tool indexing for maximum efficiency. The turret disk is designed for flexible tool loading, unaffected by additional live tool attachments or workpiece dimensions, ensuring superior adaptability for diverse machining tasks.
Top-Tier Turn-Mill Capabilities
This represents the ultimate highlight of the machine. By integrating rear-mounted servo main and sub-spindles, a Y-axis servo power turret, and imported precision gear-driven live tooling (for both radial and axial milling), we have built a complete, high-performance turn-mill unit.
This system significantly enhances machining rigidity, thermal stability, and indexing precision. It supports infinite C-axis indexing and dynamic workpiece handover (on-the-fly) between main and sub-spindles, effectively eliminating secondary setup errors. Complex geometries, large components, and parts with strict concentricity requirements can be completed—from turning and milling to drilling and tapping—in a single setup. This ensures maximum machining accuracy while drastically shortening the overall manufacturing cycle.
Reliable Auxiliary Systems
The hydraulic station utilizes high-performance variable displacement pumps and core components from top-tier Taiwanese brands, equipped with an integrated air-cooling system. This ensures exceptionally quiet operation and precise oil temperature control even during extended shifts.
The machine features a stylish, fully enclosed protective housing that is completely waterproof and chip-proof. For maximum operator protection, the sliding doors are equipped with safety interlocks, ensuring a secure and user-friendly working environment.
Main Technical Specifications
| Specification Item | Unit | NXX-46ESY | |
|---|---|---|---|
| Max. Swing Diameter Over Bed | mm | Φ500 | |
| Max. Machining Length | mm | 420 | |
| Max. Swing Diameter Over Turret Sub-plate | mm | Φ500 | |
| Max. Turning Diameter (Disk/Shaft) | mm | Φ260 / Φ260 | |
| Spindle / Sub-spindle Bore Diameter | mm | φ56 / φ56 | |
| Max. Bar Capacity (Main / Sub-spindle) | mm | Φ45 / φ45 | |
| Spindle Speed Range | r/min | 0–4000 | |
| Spindle Speed Steps | Steps | CV (Continuously Variable) | |
| Spindle / Sub-spindle Nose | - | Flange Type A2-5 / A2-5 | |
| Main / Sub-spindle Motor Power | kW | 11 | |
| Slant Bed Angle | ° | 30° | |
| X-axis Rapid Traverse Rate | m/min | 30 | |
| Z1 / Z2-axis Rapid Traverse Rate | m/min | 30 | |
| Y-axis Rapid Traverse Rate | m/min | 30 | |
| X-axis Max. Travel (One-way) | mm | 330 | |
| Z1 / Z2-axis Max. Travel | mm | 540 / 580 | |
| Y-axis Max. Travel | mm | 110 | |
| X-axis Servo Motor Power | kW | 3.1 | |
| Z1 / Z2-axis Servo Motor Power | kW | 2.4 / 2.4 | |
| Spindle / Sub-spindle Radial & Axial Runout | mm | ≤ 0.003 | |
| Spindle / Sub-spindle Flatness Accuracy | mm | ≤ 0.01 / Φ100 | |
| Main / Sub-spindle Handover Concentricity | mm | ≤ 0.01 | |
| Live Tooling Spindle Taper Runout | mm | ≤ 0.006 | |
| Repeatability Accuracy | X-axis | mm | ±0.0025 |
| Z-axis | mm | ±0.0025 | |
| C-Axis Repeatability | mm | 0.01 | |
| Standard Turret Type | - | Servo Power Turret | |
| Max. Tool Capacity | pcs | 12 | |
| Tool Indexing Time (Adjacent) | S | 0.3 | |
| Tool Size | O.D. Tool | mm | 25 × 25 |
| Boring Bar Diameter | mm | Φ40 | |
| Live Tooling Type | - | ER25 / ER32 + Y-axis | |
| Live Tool Motor Power | kW | 3.1 + 0.75 + 2.4 | |
| Max. Live Tool Speed | r/min | 3000–6000 | |
| Max. Clamping Capacity | mm | Φ16 / Φ20 | |
| Max. Tapping Capacity | mm | M10 / M14 | |
| Total Power Capacity | kW | 37 | |
| Machine Weight (Approx.) | kg | 5500 | |
| Machine Dimensions (L×W×H) | mm | 3210 × 2050 × 2250 | |
Frequently Asked Questions
The system combines rear-mounted servo main and sub-spindles with dynamic workpiece handover (on-the-fly) and infinite C-axis indexing. This enables complete single-setup processing—from turning and milling to drilling and tapping—eliminating secondary setup errors and maintaining concentricity handover accuracy within ≤0.01 mm.
The machine features a 30° slant-bed structure cast from high-grade resin-sand iron with dense ribbing for optimal vibration damping. The spindle adopts an integral sleeve-type design with a "Three-Front, Two-Rear" precision bearing layout, ensuring high rigidity, radial runout ≤0.003 mm, and reliable thermal stability.
The machine is fitted with a 12-station Y-axis servo power turret featuring a fast adjacent indexing time of just 0.3 seconds. Driven by a dedicated servo system, live tooling supports speeds from 3000 to 6000 r/min with ER25/ER32 collet options, suitable for complex axial and radial milling and tapping operations.
The X, Z1/Z2, and Y axes feature heavy-duty linear guideways and pre-tensioned ball screws with direct-coupled servo drives, reaching rapid traverse rates of up to 30 m/min. Repeatability accuracy is held to ±0.0025 mm along both X and Z axes.
The NXX-46ESY provides a maximum swing diameter of Φ500 mm over both bed and turret sub-plate, a maximum machining length of 420 mm, turning diameters up to Φ260 mm, and a through-spindle bar capacity of Φ45 mm for both main and sub-spindles.
It includes a Taiwanese hydraulic system with variable displacement pumps and an integrated air-cooling system for consistent oil temperature. Operator safety is ensured by a fully enclosed, waterproof and chip-proof housing equipped with safety door interlocks.