Laser Cutting Machines
Principle of fiber laser cutting machine: internal optics and external optics
2022-09-13 13:43:20 technical college

The fiber laser cutting machine has a wide range of applications, and can be used for fast and efficient processing and production. How does the fiber laser cutting machine use laser to cut? How is laser produced and what is its principle?
Fiber laser cutting machine is divided into inner optics and outer optics.
1、 Internal optics
1. Cutting principle
The laser is a super dense laser beam released by a laser generator, which is irradiated on the metal plate through the spot, melted or gasified the cutting material at high temperature, and then blown off the melted melt and residue with high-pressure gas, so as to cut the seam, and then through the linkage of X, y and Z axes, so as to achieve cutting.
2. Generation of laser
Laser is converted from electric energy to light energy. Because the conversion between energy and energy can not be 100%, while one part of electric energy is converted into light energy, the other part becomes heat energy.
At present, the electro-optical conversion rate of fiber lasers is 25% - 35%. The better the performance of the laser, the higher the ratio of its electro-optical conversion rate. Of course, relatively speaking, the larger the proportion of electro-optical conversion rate, the smaller the energy consumption. The lower the proportion of electro-optical conversion rate, the greater the energy consumption.
3. Heat generation
Laser is converted from electric energy to light energy. Because the conversion between energy and energy can not be 100%, while one part of electric energy is converted into light energy, the other part becomes heat energy. (if there is energy, there will be heat.) when this part of heat energy is generated, it will stay in the laser and damage the components in the laser.
Therefore, this part of heat needs to be taken away by water, so a water cooler needs to be added.
2、 External optics
1. Transmission of light
When the optical fiber laser generator generates light and transmits it to our laser head through the optical fiber, there will be a certain amount of energy loss when the optical fiber butts the laser head. Because the propagation of light is diffusive, this light is also called astigmatism. Because light and light are mutually exclusive, they can be infinitely close, but they will never intersect. Its shape is like a waist.
When they are released by the optical fiber head, their shape is wavy.
2. Processing of wave light
The waveform light is not conducive to collecting and concentrating energy, so a collimator is needed to process the waveform light into nearly parallel light, which is certainly not absolute parallel light.
3. Function of focusing lens
Principle of optical fiber laser cutting machine: internal optical fiber laser cutting machine and external optical fiber laser cutting machine are widely used, and can be used for fast and efficient processing and production. How does the fiber laser cutting machine use laser to cut? How is laser produced and what is its principle?
Fiber laser cutting machine is divided into inner optics and outer optics.
1、 Internal optics
1. Cutting principle
The laser is a super dense laser beam released by a laser generator, which is irradiated on the metal plate through the spot, melted or gasified the cutting material at high temperature, and then blown off the melted melt and residue with high-pressure gas, so as to cut the seam, and then through the linkage of X, y and Z axes, so as to achieve cutting.
2. Generation of laser
Laser is converted from electric energy to light energy. Because the conversion between energy and energy can not be 100%, while one part of electric energy is converted into light energy, the other part becomes heat energy.
At present, the electro-optical conversion rate of fiber lasers is 25% - 35%. The better the performance of the laser, the higher the ratio of its electro-optical conversion rate. Of course, relatively speaking, the larger the proportion of electro-optical conversion rate, the smaller the energy consumption. The lower the proportion of electro-optical conversion rate, the greater the energy consumption.
3. Heat generation
Laser is converted from electric energy to light energy. Because the conversion between energy and energy can not be 100%, while one part of electric energy is converted into light energy, the other part becomes heat energy. (if there is energy, there will be heat.) when this part of heat energy is generated, it will stay in the laser and damage the components in the laser.
Therefore, this part of heat needs to be taken away by water, so a water cooler needs to be added.
2、 External optics
1. Transmission of light
When the optical fiber laser generator generates light and transmits it to our laser head through the optical fiber, there will be a certain amount of energy loss when the optical fiber butts the laser head. Because the propagation of light is diffusive, this light is also called astigmatism. Because light and light are mutually exclusive, they can be infinitely close, but they will never intersect. Its shape is like a waist.
When they are released by the optical fiber head, their shape is wavy.
2. Processing of wave light
The waveform light is not conducive to collecting and concentrating energy, so a collimator is needed to process the waveform light into nearly parallel light, which is certainly not absolute parallel light.
3. Function of focusing lens
The function of the focusing mirror is to collect and concentrate the light that has been processed into nearly parallel to form a super dense spot.
4. Role of protective lens
When the fiber laser cutting machine is in use, certain metal dust and debris will be generated, and some metal dust and debris will be generated. It will enter the cutting head of the laser cutting machine, so it is necessary to protect the lens to isolate and protect it. (the protective lens is a consumable, with an average of one piece damaged every month. Of course, the amount of loss varies according to the use intensity of the equipment and the scene.)
5. Function of laser copper nozzle
After the laser passes through the protective lens, it is released through the copper nozzle of the laser. (like the protective lens, the laser copper nozzle is also a consumable. On average, it needs to be damaged twice a month. Of course, it is the same as the lens. The amount of loss varies according to the use intensity of the equipment and the scene.)
The function of the focusing mirror is to collect and concentrate the light that has been processed into nearly parallel to form a super dense spot.
4. Role of protective lens
When the fiber laser cutting machine is in use, certain metal dust and debris will be generated, and some metal dust and debris will be generated. It will enter the cutting head of the laser cutting machine, so it is necessary to protect the lens to isolate and protect it. (the protective lens is a consumable, with an average of one piece damaged every month. Of course, the amount of loss varies according to the use intensity of the equipment and the scene.)
5. Function of laser copper nozzle
After the laser passes through the protective lens, it is released through the copper nozzle of the laser. (like the protective lens, the laser copper nozzle is also a consumable. On average, it needs to be damaged twice a month. Of course, it is the same as the lens. The amount of loss varies according to the use intensity of the equipment and the scene.)

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