Beijing Ao Kang Shing Decoration Engineering Co., Ltd. was established in 2003, mainly engaged in stainless steel processing and laser cutting, is a collection processing, sales, installation in one of the company, company has been in Beijing, stainless steel and Beijing laser cutting and metal processing industry at the forefront position, stainless steel processing factory is located in market in row D No. 8-14 building 7, laser cutting processing plant in row B, building 14, No. 10-11.

The company has first-class equipment manufacturers Bystronic (Swiss competence in production of large laser cutting machine, one Taiwan, the processing range of 4M*2M, processing capacity for carbon steel 0.5mm-25mm; stainless steel 0.5mm-20mm; aluminum 0.5mm-12mm; company also has 4 meters bending machine, 4 meters CNC punch press, CNC lathe, lathe, 4 meters CNC planer slotting machine, the United States imported Fulu waterjet, and has a variety of welding equipment, many sets, has strong processing, welding, assembly capacity.

There are three simple methods for determining the focal position of laser cutting process in industrial production:

(1) printing method: the cutting head from the top down, the laser beam on the plastic plate printing, printing the smallest diameter of the focus. (2) the inclined plate method: with the vertical shaft into an angle of the plastic board to make it horizontal pull, looking for the minimum point of the laser beam as the focus.

(3) blue spark method: remove the nozzle, blow the air, the pulse laser on the stainless steel plate, so that the cutting head from the top down, until the maximum blue sparks focus.

For the flight path of the cutting machine, due to the divergence angle of the beam, the length of the proximal and distal end of the cutting is different, there is a certain difference in the size of the beam before focusing. The larger the diameter of the incident beam, the smaller the diameter of the focal spot. In order to reduce the change of the focal spot size caused by the change of the beam size before the focus, the manufacturer of the laser cutting system at home and abroad provides some special equipment for the user to choose:

(1) parallel light tube. This is a commonly used method, namely at the output end of the CO2 laser plus a parallel light tube beam expander processing, beam expanding the beam diameter becomes larger, smaller divergence angle, the cutting work within the scope of the proximal and distal focused beam size close to agreement before.

(2) the lower shaft of an independent moving lens is added on the cutting head, and the Z axis of the control nozzle to the material surface distance (off stand) is the two mutually independent part. When the working table of the machine tool moves or the optical axis moves, the beam from the near end to the far end of the F axis is also moving at the same time, so that the beam focus after the spot diameter in the entire processing area to maintain consistency. As shown in figure two.

(3) control of the water pressure of a focusing mirror (typically a metal reflective focusing system). If the size of the focal spot becomes smaller and the diameter of the focal spot becomes larger, the water pressure changes the focus curvature to make the focal spot diameter smaller.

(4) the compensation light path system with X and Y direction on flight optical path cutting machine. That when cutting distal optical path increases the light compensation way to shorten; conversely when cutting proximal optical path decreases, so that the light compensation increase, to maintain the same optical path length. The article source: (http://www.akstzs.cn)