Maintain proper operation procedure of laser cutting machine focusing lenses:
1. focus lens is removed from the eyeglasses: release the fastening screws, remove the gas nozzle and the lens barrel in turn, blow the dust on the surface of the lens first by blowing the balloon.
2. if you do need clean lenses, we can only use a laboratory grade paper soft cotton ball, dipped in a proper amount of acetone or high storage alcohol, and gently rub the edge from the center of the lens clockwise in clockwise direction. If necessary, both sides of the lens need to be cleaned, and should be careful and careful when scrubbing.
3. install the lens tube and the gas nozzle, adjust the focal length, tighten the fastening screws, and ensure that the convex face is downward when the focusing lens is installed.
To maintain the focus lens of laser cutting machine, we should pay attention to the following three points:
1. the focusing lens material is ZnSe (Xin Huashen), which is crisp and afraid of falling. When assembling and disassembling, we should pay attention to: not too forceful, and can not collide with hard objects. The surface has an antireflective film, which is afraid of pollution, fear of wetness, fear of oil, and fear of scraping. Therefore, it is necessary to provide dry and deoiling air in the work, and do not directly handle the lens of the laser cutting machine focusing mirror, because the skin oil will have permanent damage to the surface of the lens. On the contrary, you can carry gloves and their special sets to operate. For smaller lenses, the use of optical tweezers or vacuum tweezers will be more convenient. No matter how to clamp the laser focusing lens, it can only be clamped along the non optical surface, such as the edge of the edge of the mirror.
2. under normal circumstances, the focus of laser cutting machine needs to be checked before and after cleaning. Because most contaminants and surface defects are of relatively small size, we often need to use magnifying equipment to check lenses. In addition to amplifying equipment, we sometimes need a light beam of light to illuminate the optical surface and enhance the mirror reflection intensity of the surface contaminants and defects, so that pollutants and defects can be found more easily.
3. when cleaning a laser cutting machine focusing lens, clean wipe paper and optical grade solvent are often used to prevent the destruction of other pollutants. Wipe the paper must be moistened with suitable solvent. Never use it dry. In consideration of softness, usable wiping paper is pure cotton Webril wipe paper or cotton ball, lens paper, cotton swab and other applicator.
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