The BLT520H is an intelligent cutting head designed for laser cutting applications. It is a robust device with a focus on precision, safety, and ease of maintenance, suitable for industrial environments.
Function Description
The primary function of the BLT520H is to deliver a high-power laser beam for cutting various materials. It integrates several key components to achieve this:
- Optical Fiber Interface: Connects to the laser source, receiving the laser beam.
- Collimation Unit: Shapes and collimates the incoming laser beam.
- Focusing Unit: Focuses the collimated beam to a precise spot on the workpiece, with an adjustable focus range.
- Nozzle: Directs the cutting gas and the focused laser beam onto the material.
- Gas Port: Provides an interface for cutting gas and nozzle cooling gas, crucial for the cutting process and protecting the nozzle.
- Water Cooling Interface: Manages the temperature of the cutting head, essential for stable operation at high laser powers.
- Electrical Interface (Bus System): Enables communication and control of the cutting head, including motor control and sensor readings.
- Anti-collision Screw: A safety feature designed to protect the cutting head from damage during collisions.
- Ceramic Body and Lock Ring: Components that hold the nozzle and facilitate electrical insulation for arc sensing.
- Working Indicator: Provides visual feedback on the operational status of the device.
Important Technical Specifications
The BLT520H cutting head boasts impressive technical specifications, making it suitable for demanding industrial applications:
- Laser Wavelength: 1030-1090nm, compatible with common industrial fiber lasers.
- Laser Power: Up to ≤8kW, indicating its capability for high-power cutting.
- Fiber Interface: QBH/EOC, standard interfaces for fiber laser delivery.
- Spot Magnification: M=2.0/2.5, offering flexibility in beam characteristics.
- Focus Adjustment Range: ±50mm, allowing for precise control over the focal point relative to the workpiece.
- NA (Numerical Aperture): Max. 0.13 at Fc100.
- Centering Adjustment Range: ±1.5mm, for fine-tuning the beam's position.
- Focus Acceleration: 7.5m/s², indicating rapid focus adjustment capabilities.
- Cutting Gas Interface: Ø10, maximum 25bar (2.5Mpa), requiring high-quality gas (ISO 8573-1:2010: solid particles - class 2, water - class 4, oil - class 3) for optimal lens life.
- Nozzle Cooling Gas Connection: Ø6, maximum 5bar (0.5Mpa).
- Water Cooling Interface: Ø8, maximum 5bar (0.5Mpa), with a minimum flow rate of 2.0l/min. Deionized/distilled water (conductivity < 10 μS/cm) is recommended.
- Operating Temperature: 5~55°C.
- Storage Temperature: -25~+55 °C.
- Size: 420*320 (dimensions are not specified in units, but typically in mm).
- Weight: Approximately 7.5 kg.
Usage Features
The BLT520H is designed with user-friendly features and operational guidelines to ensure safety and performance:
- Installation: Requires a clean workbench (vertical purification, ISO 5, 100 cleanliness, average wind speed ≥ 0.4m/s) and specific cleaning tools (flashlight, absolute ethanol/IPA, dust-free cotton swab, dust-free cloth, compressed air). Installation involves carefully inserting and securing the laser fiber, wrapping and sealing the interface, mounting the head on the machine's Z-axis backplane, and installing the ceramic body and nozzle.
- Beam Centering: Achieved by adjusting XY centering knobs to align the focal point with the nozzle center using low-power dotting. A manual alignment operation involves placing scotch tape under the nozzle, triggering a low-power laser pulse, and adjusting the X/Y centering screws based on the tape's penetration mark.
- LED Indicators: Provide real-time status feedback for power, operation (RUN), communication (LINK), and sensor readings (SENSOR). Different colors (green, red, not bright, bright) indicate normal operation, alarms (e.g., under-voltage, abnormal motor, communication error, abnormal sensor reading), or connection issues (e.g., no power, loose cable).
- Water Cooling Management: Emphasizes the importance of setting cooling water temperature based on the dew point to prevent condensation on optical components, which can cause damage.
- Gas Quality: Strict requirements for cutting gas quality are highlighted to prolong the life of the protective lens.
- Electrical Interface Precautions: PWE and air plug interfaces come with dust plugs for IP64 protection. Removing these plugs reduces the protection level, making the device vulnerable to water ingress. Proper connection and sealing of water circuits are crucial before removing dust plugs.
- Bus System Integration: The BLT520H connects to a BCS210E controller via a PWE line, forming a TubePro Bus system. This setup requires trained personnel for wiring and mandates that the BCS210E be powered off during connection.
Maintenance Features
Maintenance of the BLT520H focuses on protecting its optical components and ensuring longevity:
- Protective Lenses: The device incorporates multiple protective lenses (1st and 2nd upper, 1st and 2nd lower) that can be replaced. The manual provides detailed steps for replacing both upper and lower protective lenses, which involves opening protective doors, pulling out mirror drawers, removing pressure rings, and inserting new lenses.
- Cleanliness: Emphasizes maintaining a clean environment during any maintenance or replacement of accessories to prevent dust or dirt from contaminating the optical path.
- Original Parts: Stresses the use of original replacement and maintenance accessories due to the high-quality requirements of optical products, warning against potential safety hazards with non-original parts.
- Structured Design: The schematic diagram of the product structure clearly labels all key components, including various lens drawers, collimation and focusing units, and sensing modules, aiding in identification and maintenance.
- Specialized Personnel: All wiring and maintenance operations should only be performed by trained and professional personnel to ensure safety and proper functioning.
The BLT520H is a sophisticated laser cutting head designed for high performance, reliability, and ease of maintenance in industrial settings, with a strong emphasis on protecting its delicate optical components.
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