The utility model relates to an automatic focusing three-dimensional five-axis
laser cutting head which comprises an
optical fiber QBH automatic collimation
assembly, a C-axis rotating
assembly, an A-axis rotating
assembly, a light path reflection assembly and a
cutting assembly, and has the advantages that the structure is compact, focusing is accurate, the
optical fiber QBH automatic collimation assembly and an automatic focusing lens assembly are adopted, the center position and the
focal length of a
light beam can be accurately adjusted, and the
cutting efficiency is improved. Stable and consistent cutting quality is guaranteed, and cutting precision is improved. The protection assembly is internally provided with pressurized gas to prevent
dust pollution, and the service life of the optical element is prolonged; the anti-collision assembly is in magnetic attraction connection with an annular
magnet through a
contact type sensor, the cutting head is effectively protected against collision damage, the equipment reliability is improved, and the service life is prolonged. The
laser machining device is high in adaptability, can adapt to various types of lasers, meets different
machining requirements, has good universality and flexibility, and expands the application range. The automatic focusing function reduces manual intervention, accelerates the cutting speed, improves the production efficiency and reduces the production cost.