The focus lens of laser cutting machine is a kind of more precise optical element, and its cleanliness directly affects the processing performance and quality of laser cutting machine. Therefore, it is necessary to maintain the focus lens regularly. Let me share some tips for maintaining the focus lens.Maintain the correct operation process of laser cutting machine focus lens:1. Take out the focusing lens in the lens frame: loosen the fastening screws, take down the air nozzle and the lens cylinder in turn; blow off the dust on the surface of the lens with the blowing balloon first;2. If you really need to clean the lens, you can only use a laboratory grade paper soft cotton ball, dip it in a proper amount of acetone or high storage alcohol, and gently rotate it clockwise from the center of the lens to the edge. When necessary, both sides of the lens need to be cleaned, and they should be carefully scrubbed;3. Install the lens cylinder and air nozzle, adjust the focal length, tighten the fastening screws, and ensure that the convex surface is downward when installing the focusing lens. 报错