Different devices of laser cutting system of automatic fiber laser cutting machine manufacturers
Fully automatic fiber laser cutting machine manufacturers. This is a commonly used method, that is, add a parallel light to the output end of the C02 laser and add an independent moving lens lower axis on the cutting head, which is combined with the control nozzle to the surface of the material. The minimum distance is the focal point. Move from top to bottom until the blue spark is the focus. There is a certain difference in the beam size 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 focusing, the manufacturers of laser cutting systems at home and abroad provide some special devices for users to choose: the tube performs beam expansion processing, and the beam diameter after the beam expansion becomes larger. The divergence angle becomes smaller, so that the beam size is close to the same before focusing at the near end and the far end in the cutting working range. The standoff Z axis is two independent parts. When the machine tool table moves or the optical axis moves, the beam moves from the proximal end to the distal F axis at the same time, so that the beam spot diameter is within the entire processing area after the beam is focused. be consistent. When the focal spot diameter becomes larger, the water pressure is automatically controlled to change the focus curvature to make the focal spot diameter smaller.
When the number of automatic fiber laser cutting machine manufacturers increases, the compensation optical path is shortened: on the contrary, when the optical path length of the proximal end of the cutting is reduced, the compensation optical path is increased to keep the optical path length consistent. Control the water pressure of the focusing lens (usually a metal reflective focusing system). If the beam size becomes smaller before focusing, a compensation light path system in the x and y directions will be added to the flying light path cutting machine. Earlier on the laser stamping compound machine, a punch was used to punch out a hole, and then a laser was used to start cutting from the small hole. For laser cutting machines without punching devices, there are two basic methods of perforation: pits, and then the molten material is quickly removed by the oxygen stream coaxial with the laser beam to form a hole. Generally, the size of the hole is related to the plate thickness. The average diameter of the blasting hole is half of the plate thickness. Therefore, the blasting hole of the thicker plate is larger and not round, and it is not suitable for use on the parts with higher requirements (such as oil screen ), can only be used on scrap.