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The focus of the laser cutting machine
by：Transon
2020-10-30
The focus of the laser cutting machine problem is especially important, so in order to solve the problem of the focus of the laser cutting machine how to solve?
Then there should be first to know about the works: a laser cutting machine laser cutting is a high power laser beam focused by focusing mirror, form a tiny focus after using focus of high-energy melting and vaporization of the steel plate, so as to realize cutting.
1) Cant focus burning method: put straight board inclined above the workbench, slope of about 10 degrees. The cutting head is set at A point, A point from the height of the focusing mirror size smaller than the focal length of the focusing mirror size 20 mm, CNC system set cutting head along the x axis and y axis movement 230 mm continuous level, mobile continuous laser, laser output at the beginning of 200 w laser also stop cutting head movement to stop. This is greater drive to see the wood has a narrow, and out of the narrow width of laser burn marks. Take trace narrow as the focus position, taking down this point, in the position of wood distance lenses is the actual laser beam focus position.
2) Direct burning method: armed with a board flat piece of wood, in the cutting work mesa 85 degree Angle, increase the cutting head to focus lens distance about 1 table surface. Five times the focal length position, open the laser light brake, continuous output 200 w laser beam, below the level of fast moving to the board to focus lens, can see greater surface has a narrow board, and out of the narrow width of the laser beam is focused on the traces of the before and after burning, the mark's very close to the change of the laser beam focus on the process. Take trace narrow as the focus position, taking down this point, in the position of wood distance lenses is the actual laser beam focus position, because this method need manual operation, so special need to pay attention to safety, so as not to cause harm to human body.
3) Nc positioning play point method: with a smooth and clean piece of white cardboard, flat out on the workbench, laser cutting head is set in the upper part, focus lens from the height of the cardboard than focus lens focal length of the small size 10 mm position, such as focusing lens focal length is 127 mm, is to set the focus lens in about 117 mm from the board. CNC system set cutting head along the x axis and y axis once every 10 mm move, every move of z axis rises 1 mm at the same time, can set up 20 times continuous moving distance. Every time they move in place, with issued a 200 w laser pulse laser, punch a hole in the cardboard. Mobile 20, 20 times of punching z-axis height increases 20 mm. To observe the 20 holes, can be found that the diameter of the hole is from big to small, then raised to gradual change. To find the location of the small hole diameter is focus position, put it down. Measured at that location is the cardboard distance lenses is the actual laser beam focus position.
1) Cant focus burning method: put straight board inclined above the workbench, slope of about 10 degrees. The cutting head is set at A point, A point from the height of the focusing mirror size smaller than the focal length of the focusing mirror size 20 mm, CNC system set cutting head along the x axis and y axis movement 230 mm continuous level, mobile continuous laser, laser output at the beginning of 200 w laser also stop cutting head movement to stop. This is greater drive to see the wood has a narrow, and out of the narrow width of laser burn marks. Take trace narrow as the focus position, taking down this point, in the position of wood distance lenses is the actual laser beam focus position.
2) Direct burning method: armed with a board flat piece of wood, in the cutting work mesa 85 degree Angle, increase the cutting head to focus lens distance about 1 table surface. Five times the focal length position, open the laser light brake, continuous output 200 w laser beam, below the level of fast moving to the board to focus lens, can see greater surface has a narrow board, and out of the narrow width of the laser beam is focused on the traces of the before and after burning, the mark's very close to the change of the laser beam focus on the process. Take trace narrow as the focus position, taking down this point, in the position of wood distance lenses is the actual laser beam focus position, because this method need manual operation, so special need to pay attention to safety, so as not to cause harm to human body.
3) Nc positioning play point method: with a smooth and clean piece of white cardboard, flat out on the workbench, laser cutting head is set in the upper part, focus lens from the height of the cardboard than focus lens focal length of the small size 10 mm position, such as focusing lens focal length is 127 mm, is to set the focus lens in about 117 mm from the board. CNC system set cutting head along the x axis and y axis once every 10 mm move, every move of z axis rises 1 mm at the same time, can set up 20 times continuous moving distance. Every time they move in place, with issued a 200 w laser pulse laser, punch a hole in the cardboard. Mobile 20, 20 times of punching z-axis height increases 20 mm. To observe the 20 holes, can be found that the diameter of the hole is from big to small, then raised to gradual change. To find the location of the small hole diameter is focus position, put it down. Measured at that location is the cardboard distance lenses is the actual laser beam focus position.
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