Components of the Fiber Laser Cutting Machine
The laser cutting machine system generally consists of a laser generator, an (external) beam transmission component, a workbench, a microcomputer numerical control cabinet, a water chiller, and a computer (hardware and software), etc.
- The main machine part of the machine:
The machine part of the laser cutting machine, the mechanical part that realizes the movement of the X, Y, and Z axes, including the cutting work platform. It is used to place the workpiece to be cut and can move it correctly and accurately according to the control program, usually driven by a servo motor.
- Laser generator:
Laser generator is a device that generates the laser light source. As the power of fiber lasers continues to rise, fiber lasers can be used on a large scale in industrial cutting. For example: using a fast and continuous fiber laser to micro-cut stainless steel arterial tubes. Due to its high beam quality, the fiber laser can obtain a very small focus diameter and the resulting small slit width is refreshing the standard of the medical device industry.
Features of fiber laser generator:
(1) Good beam quality.
(2) High efficiency.
(3) Good heat dissipation characteristics.
(4) Compact structure and high reliability.
- External optical path:
Refractive mirror, used to guide the laser in the required direction. In order to prevent the beam path from malfunctioning, all mirrors must be protected by a protective cover, and a clean positive pressure protective gas should be introduced to protect the lens from contamination. A set of lenses with good performance will focus a beam with no divergence angle into an infinitely small spot.
- Numerical control system:
Controlling the machine tool to realize the movement of X, Y, Z axis, and also control the output power of the laser.
- Regulated power supply:
Connected between the laser, CNC machine tool and the power supply system. Mainly play a role in preventing external grid interference.
- Laser cuttinghead:
It mainly includes parts such as cavity, focusing lens holder, focusing lens, capacitive sensor and auxiliary gas nozzle. The cutting head driving device is used to drive the cutting head to move along the Z axis according to the program, and is composed of a servo motor and a screw or gear.
- Control cabinet:
Used to control the working process of the entire cutting device.
- Water chiller:
Used to cool the laser generator. A laser is a device that converts electrical energy into light energy. For example, the conversion rate of a CO2 gas laser is generally 20%, and the remaining energy is converted into heat. The cooling water takes away the excess heat to keep the laser generator working normally. The chiller also cools the light path reflector and focusing mirror outside the machine tool to ensure stable beam transmission quality and effectively prevent the lens from being deformed or broken due to excessive temperature.
- Gas tank:
Including the working medium gas cylinder and auxiliary gas cylinder of the laser cutting machine, which are used to supplement the industrial gas for laser oscillation and supply auxiliary gas for the cutting head.
- Air compressor, air storage tank:
Providing and storing compressed air.
- Air cooling dryer, filter:
Used to supply clean and dry air to the laser generator and beam path to keep the path and reflector working normally.
- Ventilation dust collector:
Extract the smoke and dust generated during processing, and carry out filtering treatment, so that the exhaust gas discharge meets the environmental protection standards.
- Slag discharge machine:
Removing the leftovers and wastes generated during cutting processing.
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