when cutting a remote optical path increases to compensate for optical path shortened

Currently offers a flat cutting machine business Wuhan Fali Lai, Shanghai Unity Prima Company, Shenyang Prima Company, Jinan Zimmer, Wuhan Chutian companies. According to the U.S. laser industry applications magazine "Industrial Laser Solution" 2000 Annual Report statistics: In 1999, total worldwide sales of laser cutting systems (mainly CO2 laser cutting system) is 3325 units, a total of $ 1.174 billion. According to incomplete statistics, China's current annual production of CO2 laser cutting machine nearly 100 units, a total of 150 million yuan. Although the trend of rapid development of laser cutting, but the level of application of a larger gap with developed countries. General Manager had a technical discussion meeting to decide the technical program of laser pointer .Flying optics cutting machine to add x, y direction of the optical system of compensation. That is, when cutting a remote optical path increases to compensate for optical path shortened; the other hand when cutting near the optical path is reduced, the optical path to increase compensation in order to maintain the same optical path length. Cutting perforation technology: any kind of thermal cutting technology, except for a few cases from the beginning edge of the board, in general, must wear a hole in the board. Compound earlier in the laser punching machine is the first out of a hole punch, and then use the laser from the hole to start cutting. No stamping device for laser cutting machine, there are two basic methods of perforation: blast hole: (Blast drilling), materials by continuous laser irradiation to form a pit in the center, then the laser beam coaxial with the oxygen flow soon remove the molten material to form a hole. Generally the size and thickness of the hole, blasting perforation thickness of half the average diameter, so the thicker the plate the larger diameter hole blasting, and not round, not in the higher parts to use (such as oil sieve tube seam ), can only be used on waste. Furthermore, since the oxygen pressure used in piercing and cutting the same time, a large splash.
Collimator. This is a commonly used method, namely CO2 laser output plus an expanded beam collimator for processing, after the beam expander larger beam diameter, divergence angle becomes smaller, so that within the scope of work in cutting the proximal and distal focused beam size close to the front line. Increase in the cutting head of an independent movement under the lens axis, it nozzles to the surface and control the distance (stand off) the Z-axis are two independent parts. When moving the machine table or moving the optical axis, the beam axis from proximal to distal F also move, so after focusing the beam spot diameter is consistent throughout the processing area. Shown in Fig. Control focusing mirror (usually metal reflector focusing system) pressure. If the focused beam size before leaving the smaller focus spot diameter becomes larger, the automatic control of pressure to change the focus of curvature smaller focal spot diameter. The school will need more laser pointer in large quantity.