Push-pull type jet flow nozzle device for water-jet guided laser machining and using method of push-pull type jet flow nozzle device

The invention provides a push-pull type jet flow nozzle device for water-jet guided laser machining and a using method, and belongs to the technical field of water-jet guided laser machining. The problems that in the prior art, a jet flow nozzle is high in cost, cannot be repeatedly used and is complex in replacement operation, and the installation precision is difficult to guarantee are solved. The device comprises a light-water coupling cavity, a jet flow nozzle, a laser incidence window and a water inlet hole, the jet flow nozzle is installed below the light-water coupling cavity through a push-pull mechanism, the laser incidence window is formed in the upper end of the light-water coupling cavity, and the water inlet hole is formed in the side end of the light-water coupling cavity. A plurality of jet flow spraying holes are uniformly distributed in the jet flow nozzle along the center line position, the jet flow nozzle is connected with a push-pull mechanism through a nozzle clamping device, the push-pul