CNC Slant Bed Lathe NXX-52D from China Suppliers: Precision Machine Tool with Indexing Turret and Hydraulic Tailstock
Structural Features
The spindle system features a high-precision, high-rigidity cartridge-type design, specifically optimized for heavy-duty machining. The structural configuration utilizes a 'front-three-rear-two' (triplex-front, duplex-rear) arrangement of imported precision-grade bearings. Combined with a direct-drive spindle servo motor, the system achieves exceptional rotational accuracy, dynamic rigidity, and speed stability, ensuring superior machining quality and high efficiency even under heavy cutting conditions.
The machine bed is constructed from premium monolithic cast iron using a resin-sand precision casting process with a 30° slant layout. The internal structure is reinforced with high-rigidity ribbing, significantly enhancing the machine’s natural frequency and damping characteristics. This design offers outstanding anti-vibration performance. Furthermore, the slanted bed provides the operator with an unobstructed view and easier access, while ensuring gravity-assisted chip removal for enhanced efficiency and workplace safety.
The feed mechanism operates through the synergy of high-rigidity linear guideways and precision pre-tensioned ball screws. Both X and Z axes are directly driven by high-performance servo motors via flexible couplings, eliminating backlash and enhancing transmission efficiency. An intelligent centralized lubrication system provides forced lubrication and cooling to the guideways and ball screws, supporting rapid traverse rates of up to 30 m/min while maintaining exceptional positioning accuracy and thermal stability.
Hydraulic system integrates premium Taiwanese components, including variable displacement pumps, hydraulic motors, and solenoid valves, complemented by a high-efficiency air-cooled radiator. This setup ensures low-noise operation and precise oil temperature control, guaranteeing reliable hydraulic movements. The machine offers a choice of hydraulic or servo indexing turrets, featuring a robust construction with rapid tool changes (0.3 - 0.5 sec) and bi-directional shortest-path indexing. This configuration is specifically engineered to meet the rigorous demands of heavy-duty disk-type workpiece machining.
The tailstock is hydraulically driven, enabling automatic quill extension and retraction. It offers superior rigidity and ease of adjustment, significantly expanding the machine's capability for processing long-shaft workpieces.
Machine is equipped with an aesthetic fully-enclosed protection guard, providing excellent waterproof and chip-proof performance. The sliding doors operate smoothly and are integrated with safety interlocking protection. This design not only enhances the machine’s overall appearance but also provides comprehensive safety assurance for both the operator and the equipment.
Product Display
Key Technical Specifications
| Item | Unit | NXX-46D | NXX-52D |
|---|---|---|---|
| Max. Swing Over Bed | mm | Ф450 | Ф450 |
| Max. Machining Length | mm | 500 | 500 |
| Max. Swing Over Turret Carriage | mm | Φ220 | Φ220 |
| Max. Turning Dia. (Disk / Shaft) | mm | Φ450/Φ220 | Φ450/Φ220 |
| Spindle Bore Diameter | mm | Φ56 | Φ62 |
| Max. Bar Capacity | mm | Φ45 | Φ51 |
| Spindle Speed Range | r/min | 0-4000 | 0-3000 |
| Spindle Speed Steps | Step | CV | CV |
| Spindle Nose | - | Flange Type A2-5 | Flange Type A2-5 |
| Main Motor Power (Spindle) | Kw | 7.5 | 11 |
| Bed Slant Angle | ° | 30 | 30 |
| X-axis Rapid Traverse Rate | m/min | 30 | 30 |
| Z-axis Rapid Traverse Rate | m/min | 30 | 30 |
| Max. X-axis Travel (Single Direction) | mm | 500 | 500 |
| Max. Z-axis Travel | mm | 550 | 550 |
| X/Z Axis Servo Motor Power | Kw | 1.3 | 1.3 |
| Tailstock Quill Diameter | mm | Φ80 | Φ80 |
| Tailstock Quill Travel | mm | 80 | 80 |
| Tailstock Spindle Taper | MT | 4# | 5# |
| Tailstock Body Travel (Manual/Hydraulic) | mm | 480 | 480 |
| Spindle Run-out (Radial/Axial) | mm | ≤0.003 | ≤0.003 |
| Spindle Face Flatness / Spindle Nose Run-out | mm | ≤0.01/Φ100 | ≤0.01/Φ100 |
| Repeatability Accuracy (X-axis) | mm | ±0.0025 | ±0.0025 |
| Repeatability Accuracy (Z-axis) | mm | ±0.0025 | ±0.0025 |
| Standard Turret Type | - | 160-10 Station Hydraulic Indexing Turret | 160-10 Station Hydraulic Indexing Turret |
| Max. Number of Tools | pcs | 10 | 10 |
| Tool-to-Tool Indexing Time | S | 0.5 | 0.5 |
| Tool Size (O.D. Tool) | mm | 25×25 | 25×25 |
| Tool Size (Boring Bar Diameter) | mm | Φ32 | Φ32 |
| Total Power Consumption | Kw | 11 | 14.5 |
| Machine Weight (Approx.) | kg | 3300 | 3500 |
| Overall Dimensions (L×W×H) | mm | 2700×1810×1880 | 2700×1810×1880 |
Frequently Asked Questions (FAQ)
What are the primary differences between the NXX-46D and NXX-52D models?
The primary differences lie in the spindle capacity, motor power, and tailstock taper. The NXX-46D features a Φ56 mm spindle bore (Φ45 mm bar capacity), 7.5 kW motor, and MT4# tailstock, while the NXX-52D offers a larger Φ62 mm spindle bore (Φ51 mm bar capacity), 11 kW motor, and MT5# tailstock taper for heavier machining demands.
What advantages does the 30° slant bed design provide?
The 30° monolithic cast iron slant bed provides superior anti-vibration performance and enhanced structural rigidity. It improves ergonomic operator access, allows an unobstructed view during cutting, and utilizes gravity for efficient, smooth chip removal.
What is the positioning repeatability of the machine?
Both X and Z axes feature a high repeatability accuracy of ±0.0025 mm, driven by precision pre-tensioned ball screws, linear guideways, and direct-drive servo motors via flexible couplings.
How fast is the tool indexing on the standard turret?
The standard 160-10 station hydraulic indexing turret provides rapid tool-to-tool indexing within 0.3 to 0.5 seconds, utilizing bi-directional shortest-path indexing to minimize non-cutting cycle times.
How does the machine ensure thermal stability during rapid traverse?
The machine incorporates an intelligent centralized forced lubrication and cooling system for the linear guideways and ball screws, allowing rapid traverse rates up to 30 m/min while maintaining excellent thermal stability and accuracy.
Is the tailstock suitable for long-shaft workpiece machining?
Yes, the tailstock is hydraulically driven with automatic quill extension and retraction (80 mm travel, 480 mm body travel), providing high rigidity and easy adjustments specifically suited for processing long shafts.