How to maintain the focusing lens in the laser cutting machine
The focusing lens of the laser cutting machine is a relatively precise optical element, and its cleanliness directly affects the processing performance and quality of the laser cutting machine. Therefore, it is very necessary to maintain the focus lens regularly. Below, Bystronic Laser will share with you some methods to maintain the focus lens.
The correct operation process of maintaining the focus lens of the laser cutting machine:
1. Take out the focusing lens from the frame; loosen the fastening screws, and then take off the air nozzle and lens barrel in turn; first use a blowing balloon to blow off the dust on the surface of the lens;
2. If you really need to clean the lens, you can only use a laboratory-grade paper 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. When necessary, both sides of the lens need to be cleaned. Care should be taken when scrubbing;
3. Install the lens barrel and air nozzle, adjust the focal length, tighten the fastening screws, and keep the convex surface downward when installing the focusing lens.
Maintenance of the focusing lens of the laser cutting machine should pay attention to the following three points:
1. The focusing lens material is ZnSe (zinc arsenic), which is brittle and afraid of falling. When disassembling and assembling, please pay attention: Do not use too much force or collide with hard objects. There is an antireflection coating on the surface, which is afraid of pollution, humidity, oiliness, and scratching. Therefore, it is required to provide dry and degreasing air during work. Do not directly handle the lens of the laser cutting machine focusing lens by hand, because the skin is oily. Will cause permanent damage to the surface of the lens. It can be operated with gloves and its special set. For smaller lenses, it is more convenient to use optical tweezers or vacuum tweezers. No matter what method is used to clamp the focusing lens of a laser cutting machine, it can only be clamped along a non-optical surface, such as the frosted edge of the lens.
2. Under normal circumstances, it is necessary to check the condition of the focusing lens of the laser cutting machine before use and before and after cleaning. Because most contaminants and surface defects are relatively small in size, we often need to use magnifying equipment when inspecting lenses. In addition to magnifying equipment, sometimes we also need to illuminate the optical surface with a relatively bright light to enhance the specular reflection intensity of surface contaminants and defects, so that contaminants and defects can be found more easily.
3. When cleaning the focusing lens of a laser cutting machine, use clean wipes and optical grade solvents to prevent damage by other contaminants. The wipe paper must be moistened with a suitable solvent, and it must not be used dry. For the consideration of softness, the usable wipes are pure cotton wipes or cotton balls, lens tissues and cotton swabs and other applicators.
Bystronic Dineng Laser reminds you that the focusing lens of the laser cutting machine is a consumable part. When the cleanliness is still not high after cleaning for many times, please pay attention to replace it to ensure the laser cutting machine Processing efficiency, so as not to delay production.