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How to maintain and pay attention to the focusing lens in the laser cutting machine?

May 10,2023 | TOPTEK

1. Laser cutting machine focusing mirror maintenance operation process

Step 1: Take out the focusing lens from the frame of the laser cutting machine; loosen the fastening screws, and remove the air nozzle and the lens barrel in turn; first use a hair dryer to blow off the dust on the surface of the lens.

Step 2: If you really need to clean the lens, you can only use a laboratory-grade soft cotton ball, dipped in an appropriate amount of acetone or high-purity alcohol, and gently rotate clockwise from the center of the lens to the edge. If necessary, you need to clean both sides of the lens, Be careful when scrubbing.

Step 3: Install the lens barrel and air nozzle, adjust the focal length, and tighten the fastening screws. When installing the focusing lens, keep the convex side facing down.

2. Precautions for maintenance of focusing mirror of laser cutting machine

Note 1: The material of the focusing mirror is ZnSe (zinc arsenic oxide), which is relatively brittle and is afraid of falling off; Note when disassembling: Do not use excessive force or collide with hard objects. There is a layer of anti-reflection film on the surface, which is afraid of pollution, moisture, oil, and scratches, so it is necessary to provide dry and degreasing air when working. Do not handle the lens of the laser cutting machine focusing mirror directly by hand, because skin oil will cause permanent damage to the lens surface. It can be operated with gloves and its special kit. For smaller lenses, it is more convenient to use optical tweezers or vacuum tweezers.

Note 2: Check the condition of the laser cutting machine focusing mirror before use and before and after cleaning. Due to the relatively small size of most contaminants and surface defects, lens inspection often requires the use of magnifying equipment and the need to shine a brighter beam of light on the optical surface to enhance the specular intensity of surface contaminants and defects. This makes it easier to spot contaminants and defects.

Note 3: When cleaning the focusing mirror of the laser cutting machine, please use clean wiping paper and optical-grade solvents to prevent damage from other pollutants. Wipes must be moistened with a suitable solvent and must not dry. The wiping paper can be pure cotton wiping paper, cotton ball, lens paper, cotton swab, etc.

The focusing mirror of the laser cutting machine is a consumable item. When the cleanliness is still not high after repeated cleanings, it should be replaced in time to ensure the processing efficiency of the laser cutting machine and avoid delays in production.

The above is the analysis of the maintenance and precautions of the focusing mirror in the laser cutting machine.

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