Laser fine engraving technology has the characteristics of fast marking speed, clear and beautiful handwriting and graphics, safe and pollution-free, and does not affect the quality of the base material. It has triggered a revolutionary change in the diamond jewelry industry, and is replacing the traditional engraving method with its unique advantages. Relying on the technical advantages of chunguang institute of science and technology of China, changchun new industry optoelectronic technology co., LTD has successfully developed a series of laser fine engraving systems with many core technologies and independent intellectual property rights. This series of laser fine engraving equipment integrates lasaer pointer technology and computer technology optoelectromechanical integration system, and its main performance indexes reach the international level of similar products.
Laser fine engraving system mainly consists of laser, laser focusing and imaging optical system, translation platform and drive system, input/output control card, computer and control software.
Laser output peak value of the laser power, through the beam expanding mirror and objective lens to form a very small diameter spot and focus on the surface of the object, in the local form of high energy density of light irradiation, materials absorb part of the light energy, and convert it into heat, heat will be transmitted through the material to vaporize the object, achieve the purpose of mark. The power intensity and pulse width of laser are the key factors affecting the interaction between laser beam and material. The size and quality of focusing spot are important factors affecting laser fine engraving, and the size of focusing spot is also affected by the quality of laser beam, so the size of focusing spot determines the thickness of laser fine engraving line.
The working process of the laser fine engraving machine: the laser beam passes through the galvanometer system, and then focuses on the surface of the object through the objective lens. The computer controls the motion of the galvanometer, realizing the beam moves along the set path and forms etching on the surface of the object.
Working process of diamond laser microengraving machine: the optical system imprints the diamond on the pixel plane of CCD, and the CCD collects the image and displays it on the computer screen, which is used to select the position of engraving, so as to ensure that the laser beam focuses on the surface of the selected area. The diamond laser microengraving machine adopts the method of object movement to scan, and the electric translation platform moves the object in two dimensions according to the set path, so as to realize the laser beam focusing on the object surface to form etching, which is more suitable for fine marking.