Description
LT120 Precision CNC Tube Laser Cutting System – 3KW Fiber Power
The LT120 CNC Tube Laser Cutter is a high-performance industrial solution engineered specifically for high-speed, high-precision processing of small to medium diameter tubing. Equipped with a 3KW fiber laser source and a specialized 120mm square pneumatic chuck system, this machine addresses the rigorous demands of the automotive, medical, and high-end furniture manufacturing sectors. The LT120 focuses on maximizing throughput while minimizing material waste through advanced zero-tailing technology and high-acceleration motion control systems.
High-Rigidity Machine Bed and Structural Integrity
The foundation of the LT120 is a heavy-duty, heat-treated carbon steel bed. The frame undergoes a rigorous stress-relief annealing process at 600°C followed by vibration aging to ensure long-term structural stability and resistance to thermal deformation. This process is critical for maintaining micron-level precision during high-speed 3KW operations. The gantry is constructed from aerospace-grade aluminum alloy, providing the necessary lightness for high acceleration (up to 1.2G) without compromising the rigidity required for accurate beam positioning.
Advanced 120mm Square Pneumatic Chuck System
Unlike standard round chucks, the LT120 features a specialized 120mm square pneumatic chuck system designed for versatile profile handling. This system provides superior clamping force and centering accuracy for square, rectangular, oval, and unconventional profiles. The full-stroke pneumatic design eliminates the need for manual jaw adjustments when switching between tube sizes within the 120mm range. The chuck’s high rotational speed (up to 120 RPM) significantly reduces cycle times for complex geometries and intricate hole patterns.
3KW Fiber Laser Integration and Optical Path
The 3KW fiber laser source provides the optimal power density for cutting carbon steel, stainless steel, aluminum, and brass. The optical path is protected by a fully enclosed pressurized system to prevent dust contamination. The cutting head features autofocus technology, which automatically adjusts the focal point during the piercing and cutting cycles to account for material thickness variations. With a 3KW output, the LT120 achieves clean, burr-free edges on stainless steel up to 8mm and carbon steel up to 12mm, reducing the need for secondary finishing processes.
Zero-Tailing Technology and Material Efficiency
Material utilization is a primary cost driver in tube fabrication. The LT120 incorporates a specialized “zero-tailing” or ultra-short tailing mechanism. By utilizing a synchronized dual-chuck movement or an optional three-chuck configuration, the machine can process the tube almost to the very end of the stock. This reduces the scrap length to as little as 50mm-80mm, compared to the 200mm-300mm industry standard. For high-volume production, these material savings directly impact the bottom line and ROI of the equipment.
Precision Motion Control and Drive Systems
The LT120 utilizes high-precision rack and pinion systems paired with linear guide rails from industry-leading manufacturers. The motion is driven by high-torque Yaskawa or Panasonic bus-type servo motors, ensuring synchronized movement across the X, Y, and Z axes. The integration of EtherCAT bus control allows for real-time communication between the CNC controller and the drive system, resulting in smoother interpolation and higher cornering speeds. This is particularly evident when cutting complex intersections or small-diameter holes where traditional systems often struggle with vibration.
Technical Specifications Table
| Parameter | Specification Details | Unit/Value |
|---|---|---|
| Laser Source Power | Fiber Laser (IPG/Raycus/nLight) | 3000W (3KW) |
| Maximum Tube Diameter (Round) | Minimum 10mm to Maximum 120mm | Φ10 – Φ120 mm |
| Maximum Tube Diameter (Square) | Maximum side length | 120 x 120 mm |
| Maximum Raw Tube Length | Standard loading capacity | 6000 mm / 9000 mm |
| X/Y Axis Positioning Accuracy | Measured over full travel | ±0.03 mm |
| X/Y Axis Repositioning Accuracy | Repeatability tolerance | ±0.02 mm |
| Maximum Rotation Speed | W-Axis (Chuck) | 120 RPM |
| Maximum Acceleration | Gantry and Head movement | 1.2 G |
| Chuck Type | Pneumatic Square Full-Stroke | Self-Centering |
| Tailing Length | Minimum scrap material | ≤80 mm |
| Control System | CypTube / FSCUT3000S | EtherCAT Bus |
| Cooling Method | Dual-temperature water chiller | Industrial Grade |
| Cutting Head | Autofocus Laser Head | Raytools / Precitec |
| Supported Profiles | Round, Square, Rectangular, Angle, Channel | Multi-profile |
| Power Supply Requirements | Three-phase AC | 380V / 50-60Hz |
| Machine Weight | Total structural mass | Approx. 6500 kg |
Software and Intelligent Nesting
The LT120 is powered by professional tube cutting software, such as CypTube, which integrates seamlessly with CAD/CAM nesting programs like TubesT. The software supports the direct import of IGS and STEP files, allowing for rapid transition from design to production. Advanced features include “One-Click Nesting,” which optimizes the layout of parts on a single tube to minimize waste, and “Common Line Cutting,” which allows two parts to share a single cut path, further reducing processing time and gas consumption. The system also includes real-time monitoring of gas pressure, laser power, and cutting speed to ensure consistent quality across entire batches.
Auxiliary Systems and Safety
To maintain peak performance, the LT120 includes an integrated dual-circuit water cooling system that independently regulates the temperature of the laser source and the cutting head. This prevents thermal lensing and extends the lifespan of optical components. For safety, the machine is equipped with a fully enclosed laser safety glass housing (optional) and an automated lubrication system that ensures the longevity of the mechanical drive components. The dust extraction system is divided into zones, activating only in the area where cutting is currently occurring to maximize suction efficiency and maintain a clean working environment.
Industrial Applications
The 120mm chuck capacity makes this machine an ideal choice for industries requiring high-precision small-bore tubing. In the fitness equipment industry, it handles the complex intersections of oval and rectangular tubes with ease. In the automotive sector, it is used for exhaust components and seat frames where tight tolerances are mandatory. The 3KW power rating ensures that even when processing reflective materials like aluminum or brass for architectural accents, the LT120 maintains high cutting speeds and superior edge quality.
