| 摘要 |
The invention relates to a machining head (1) for coupling a laser beam (100) into a liquid jet (200). Said machining head (1) comprises an optical unit (2) that includes at least one optical element (20, 21.1-21.4) for focusing the laser beam (100) as well as a coupling unit (3) that includes a liquid chamber (32) delimited by a wall in which a nozzle (33) having a nozzle orifice (37) for generating a liquid jet (200) is arranged. In a state in which the coupling unit (3) is connected to the optical unit (2), the laser beam (100) that can be focused by the optical unit (2) can be directed in a beam direction through the liquid chamber (32) of the coupling unit (3) into the nozzle orifice (37) and can be coupled into the liquid jet (200) that can be generated by the nozzle (33) and extends in the beam direction. In order to supply liquid from the optical unit (2) to the liquid chamber (32), a liquid interface (50) is formed between the optical unit (2) and the coupling unit (3); in the state in which the coupling unit (3) is connected to the optical unit (2), the liquid interface (50) is arranged upstream of the last optical element (20, 21.4) of the optical unit (2), "upstream" and "last" being in relation to the beam direction. |
