4 Axis Multifunctional 1530 ATC CNC Router Wood CNC Router for Wood Furniture Sign Making Chair Legs
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The main technical method of laser cutting machine
by：Transon
2020-10-29
But cutting has splash, easy to get too close to the workpiece lens damage, so generally high power CO2 laser cutting machine widely used in industry application of '5 ~ 7.
5 '('
127~190mm)
The focal length.
Because the energy density is proportional to the 4 / PI d2, so the focal spot diameter as small as possible, in order to produce a narrow kerf width;
At the same time focus spot diameter and is directly proportional to the depth of focus of the lens.
in the produce industry there are three kinds of simple method to determine the focus position:
print method: make the cutting head movement, down on the long plastic board for laser printing, print small diameter as the focus. The actual focal spot diameter in 0. 1 to 0. Between 4 mm. With 5 'of lens cutting carbon steel, for example, the focal length of focal deeply + 2% range, namely around 5 mm.
blue spark method: remove the nozzle, blowing air, will play on stainless steel plate, the pulse laser makes the cutting head from the top down movement, until the blue sparks as the focus. For high quality cutting, the effective depth of focus and is cut and lens diameter and related materials.
in the laser beam parameters in laser cutting machine, machine with the function and precision of numerical control system directly affects the efficiency and quality of laser cutting. If before the focus beam size smaller and make the focal spot diameter larger, automatic control water pressure change focus curvature makes focal spot diameter smaller.
in the cutting head under a separate mobile lens to axis, it and control the nozzle to the material surface interval ( 对峙) The Z axis is two independent of each other. Especially for cutting parts with high precision or large thickness, must grasp the hub and to solve the following techniques: 1, the focus position control technology, laser cutting is one of the strengths of the beam of high energy density, general 10 w/cm2. As shown in figure 2.
control focusing mirror ( General focus for metal reflection system) The water pressure.
for flying light path of the cutting machine, laser cutting machine for the beam divergence Angle, cutting the proximal and distal time range is different, focusing the beam size before have certain difference. Concern to the cutting quality and cutting speed, in principle, 6 mm of metal materials, focus on the surface; 6 mm carbon steel, focus on the surface; Below the surface of 6 mm stainless steel, the focus is on. So control focal point relative to the cut material on the surface of the position is very important. When the machine table to move or optical axis direction, the beam from the proximal to distal F axis move at the same time, also make the light beam focusing spot diameter after consistent throughout the processing area. Inclined plate method: use and a vertical axis Angle of inclined put plastic board makes its level, looking for a laser beam as the focus of the small. Namely to make compensation when cutting the remote optical path to increase the light path shortened; Conversely when cutting proximal reduced optical path, increase the light path compensation, to keep the optical path length. Laser cutting machine
flight path on cutting machine increases the x and y direction to compensate the light path system. This is a commonly used method, that is, at the output of the CO2 laser beam expander of parallel light pipe processing, expanded beam after the beam diameter, divergence Angle smaller, so in cutting work within the scope of the proximal and distal focused beam size close to agreement before. In order to reduce the focus beam size change before the change of the focal spot size, the laser cutting system both at home and abroad manufacturers provide some special device for users to choose:
laser cutting machine parallel light pipe. 。 Detailed size determined by experiment. The smaller the focusing lens focal depth, focal spot diameter. The diameter of the incident beam is larger, the smaller the diameter of the focal spot.
in the produce industry there are three kinds of simple method to determine the focus position:
print method: make the cutting head movement, down on the long plastic board for laser printing, print small diameter as the focus. The actual focal spot diameter in 0. 1 to 0. Between 4 mm. With 5 'of lens cutting carbon steel, for example, the focal length of focal deeply + 2% range, namely around 5 mm.
blue spark method: remove the nozzle, blowing air, will play on stainless steel plate, the pulse laser makes the cutting head from the top down movement, until the blue sparks as the focus. For high quality cutting, the effective depth of focus and is cut and lens diameter and related materials.
in the laser beam parameters in laser cutting machine, machine with the function and precision of numerical control system directly affects the efficiency and quality of laser cutting. If before the focus beam size smaller and make the focal spot diameter larger, automatic control water pressure change focus curvature makes focal spot diameter smaller.
in the cutting head under a separate mobile lens to axis, it and control the nozzle to the material surface interval ( 对峙) The Z axis is two independent of each other. Especially for cutting parts with high precision or large thickness, must grasp the hub and to solve the following techniques: 1, the focus position control technology, laser cutting is one of the strengths of the beam of high energy density, general 10 w/cm2. As shown in figure 2.
control focusing mirror ( General focus for metal reflection system) The water pressure.
for flying light path of the cutting machine, laser cutting machine for the beam divergence Angle, cutting the proximal and distal time range is different, focusing the beam size before have certain difference. Concern to the cutting quality and cutting speed, in principle, 6 mm of metal materials, focus on the surface; 6 mm carbon steel, focus on the surface; Below the surface of 6 mm stainless steel, the focus is on. So control focal point relative to the cut material on the surface of the position is very important. When the machine table to move or optical axis direction, the beam from the proximal to distal F axis move at the same time, also make the light beam focusing spot diameter after consistent throughout the processing area. Inclined plate method: use and a vertical axis Angle of inclined put plastic board makes its level, looking for a laser beam as the focus of the small. Namely to make compensation when cutting the remote optical path to increase the light path shortened; Conversely when cutting proximal reduced optical path, increase the light path compensation, to keep the optical path length. Laser cutting machine
flight path on cutting machine increases the x and y direction to compensate the light path system. This is a commonly used method, that is, at the output of the CO2 laser beam expander of parallel light pipe processing, expanded beam after the beam diameter, divergence Angle smaller, so in cutting work within the scope of the proximal and distal focused beam size close to agreement before. In order to reduce the focus beam size change before the change of the focal spot size, the laser cutting system both at home and abroad manufacturers provide some special device for users to choose:
laser cutting machine parallel light pipe. 。 Detailed size determined by experiment. The smaller the focusing lens focal depth, focal spot diameter. The diameter of the incident beam is larger, the smaller the diameter of the focal spot.
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