Description
Industrial CNC Tube Laser Cutter LT120 – 2KW High-Precision Fiber System
The LT120 CNC Tube Laser Cutter is a specialized industrial solution engineered for high-speed, high-precision processing of small to medium diameter tubing. Equipped with a 2KW fiber laser source and a dedicated 120mm square pneumatic chuck system, this machine is designed to meet the rigorous demands of the B2B manufacturing sector, including automotive components, medical furniture, HVAC systems, and fitness equipment production. The LT120 prioritizes mechanical rigidity, beam stability, and material efficiency through advanced zero-tailing technology.
Heavy-Duty Machine Architecture and Stress Relief
The foundation of the LT120 is a high-rigidity, reinforced welded steel bed. To ensure long-term structural integrity and prevent thermal deformation during high-speed operations, the frame undergoes a strict industrial heat-treatment process. This includes high-temperature annealing followed by natural aging to eliminate internal residual stresses. The mounting surfaces for the linear guides and rack-and-pinion systems are processed using a large-format CNC five-axis machining center, ensuring parallelism and perpendicularity tolerances within ±0.02mm. This mechanical precision is critical for maintaining cutting accuracy over the entire 6000mm (or optional 9000mm) processing length.
Advanced 120mm Square Pneumatic Chuck System
The LT120 features a specialized 120mm square pneumatic chuck system, optimized for rapid clamping and high-speed rotation. Unlike standard round chucks, the square-bore design provides superior grip and centering for square and rectangular profiles, reducing vibration during high-acceleration cornering. The system utilizes a full-stroke pneumatic design, eliminating the need for manual jaw adjustments when switching between tube diameters within the 10mm to 120mm range. The synchronized dual-chuck configuration ensures that the tube remains perfectly centered, which is vital for maintaining a consistent focal point during 360-degree rotation.
2KW Fiber Laser Source and Optical Path Stability
Integrated with a 2KW industrial fiber laser source (available in IPG or Raycus configurations), the LT120 delivers a high-brightness beam with a wavelength of 1.06µm. The 2KW power rating is the “sweet spot” for tube processing, offering high-speed cutting of carbon steel up to 8mm and stainless steel up to 5mm with minimal heat-affected zones (HAZ). The optical path is protected by a fully enclosed pressurized bellows system to prevent dust contamination. The cutting head features autofocus functionality, which automatically adjusts the lens position based on the material thickness and profile geometry, ensuring consistent kerf quality even on non-standard tube shapes.
Zero-Tailing Technology and Material Optimization
Material waste is a primary cost driver in tube fabrication. The LT120 is engineered with a multi-chuck movement logic designed for “zero-tailing” or ultra-short tailing performance. By utilizing a three-chuck system (optional) or an advanced pull-through two-chuck method, the machine can process the tube to the very end of the stock. This reduces the scrap length to as little as 40mm-80mm, significantly increasing the yield per raw tube compared to traditional laser cutters that leave 200mm+ of waste. This feature is particularly beneficial when processing expensive alloys or high-volume production runs.
FSCUT Control System and Nesting Integration
The LT120 is powered by the FSCUT3000S or FSCUT5000 series CNC system, specifically developed for tube laser cutting. The software supports real-time compensation for tube deviation, ensuring that holes and cutouts remain centered even if the raw material has slight bowing or twisting. The integrated TubesT nesting software allows for advanced part-in-part nesting, common-line cutting, and automatic weld seam identification. The control interface provides the operator with real-time feedback on gas pressure, laser power modulation, and axis load, allowing for immediate adjustments to optimize cycle times.
Technical Specifications Table
| Parameter | Technical Specification |
|---|---|
| Laser Source Power | 2000W (2KW) Fiber Laser |
| Maximum Tube Diameter (Round) | 120mm |
| Maximum Tube Dimension (Square) | 120mm x 120mm |
| Minimum Tube Diameter | 10mm |
| Maximum Raw Tube Length | 6000mm (Optional 9000mm) |
| Chuck Type | Full-Stroke Square Pneumatic Chuck |
| X/Y Axis Positioning Accuracy | ±0.03mm |
| X/Y Axis Repeatability | ±0.02mm |
| Maximum Rotation Speed (W-Axis) | 120 RPM |
| Maximum Acceleration | 1.2G |
| CNC Control System | FSCUT3000S / FSCUT5000 |
| Cooling Method | Dual-Temperature Industrial Water Chiller |
| Transmission System | High-Precision Rack and Pinion / Linear Guides |
| Tailing Length | <80mm (Zero-tailing configuration available) |
| Supported Formats | .IGS, .DXF, .STEP |
| Total Machine Weight | Approx. 4,500 kg |
| Power Supply Requirements | 380V/50Hz/60Hz (3-Phase) |
Motion Control and Dynamic Performance
To handle the rapid directional changes required for small-diameter tube cutting, the LT120 utilizes high-torque Yaskawa or EtherCAT-based servo motors. The combination of a lightweight aluminum crossbeam and a high-precision rack-and-pinion system allows for accelerations up to 1.2G. This dynamic performance is essential for maintaining high feed rates when cutting complex geometries, such as interlocking joints or decorative perforations. The Z-axis is equipped with a high-speed capacitive sensor that maintains a constant nozzle-to-material distance, reacting to surface irregularities in milliseconds to prevent nozzle collisions.
Integrated Support and Loading Systems
The LT120 is designed for continuous industrial operation. It includes an automatic tube support system that adjusts its height based on the tube diameter, preventing sagging and vibration during the cutting process. For high-volume environments, the machine can be integrated with a semi-automatic or fully automatic bundle loading system. The automatic loader measures the length of each tube and feeds it into the chucks without operator intervention, significantly reducing idle time and increasing the overall OEE (Overall Equipment Effectiveness) of the production line.
Safety and Environmental Compliance
Safety is integrated into the LT120’s design through a fully enclosed laser protection zone (optional) and localized extraction hoods. The machine features a dedicated dust extraction system that follows the cutting head, effectively removing metal fumes and particulates at the source. Emergency stop circuits, safety light curtains, and interlocked access panels ensure compliance with international CE and FDA safety standards for Class 4 laser products. The electrical cabinet is dust-proof and equipped with an independent air conditioner to maintain the longevity of the CNC components in harsh factory environments.