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,  its cleanliness directly affects the processing performance  quality of the laser cutting machine. Therefore, regular maintenance of the focusing lens is very necessary. Below is the method of maintenance of the focusing lens.

The correct operation process of maintaining the focus lens of the laser cutting machine:

1. Take out the focusing lens  the frame; loosen the fastening screws, remove the air nozzle  the lens tube in sequence; first blow off the dust on the lens surface with a blower balloon;

2. If you really need to clean the lens, you can only use laboratory-grade paper soft cotton balls, dip an appropriate amount of acetone  high-purity alcohol,  gently rotate it clockwise  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  gas nozzle, adjust the focal length, tighten the fastening screws,  make sure the convex lens faces downward when installing the focusing lens.

Pay attention to the following three points when maintaining the focusing lens of the laser cutting machine:

 1. The material of the focusing lens is ZnSe (arsenic zinc), which is relatively brittle  afraid of falling; when disassembling, please pay attention: do  use too much force,  do  collide with hard objects. There is an antireflection coating on the surface, which is afraid of pollution, humidity, oiliness,  scratching. Therefore, it is required to provide dry  degreased air in the work. Never handle the lens of the laser cutting machine focusing lens directly by hand because of skin oil Will cause damage to the lens surface. It can be operated with gloves  its special set. For smaller lenses, it is more convenient to use optical tweezers  vacuum tweezers. No matter what method is used to clamp the focusing lens of the laser cutting machine, it can only be clamped along the non-optical surface, such as the frosted edge of the lens edge.

 2. Generally, the condition of the focusing lens of the laser cutting machine needs to be checked before use  before  after cleaning. Because the size of most contaminants  surface defects is relatively small, we often need to use magnifying equipment when inspecting lenses. In addition to the magnifying equipment, sometimes we need to illuminate the optical surface with a relatively bright light to enhance the specular reflection intensity of surface contaminants  defects, so that the contaminants  defects can be more easily found.

 3. When cleaning a laser cutting machine focusing lens, use clean wipe paper  optical grade solvents to prevent damage  other contaminants. The wipe paper must be moistened with a suitable solvent  must  be used dry. For softness considerations, the available wiping paper is cotton wiper  cotton ball, lens paper  cotton swab  other applicators.