Coaxial type nozzle used for laser micro machining of thin-walled tube

Abstract

The invention relates to a coaxial type nozzle used for laser micro machining of a thin-walled tube, which mainly solves the problems in the prior art that in the laser machining process of a small-diameter tube, the loss of a laser nozzle is larger and a water guiding mechanism is complex. The technical scheme adopted by the invention is as follows: the coaxial type nozzle comprises three parts: an upper part which is a connecting module I connected with a laser generator, a middle part which is a transitional module II, and a lower part which is a nozzle module III, wherein the nozzle module III consists of a nozzle inner core (9) and a nozzle outer core (7), the nozzle inner core (9) and the nozzle outer core (7) are provided with threads and are connected through threaded fit, and a joint of the nozzle inner core (9) and the nozzle outer core (7) is sealed by an O-shaped sealing ring (6); and a high pressure water inlet (8) is arranged on a side wall of the nozzle outer core (7), and the opening direction of the high pressure water inlet (8) is perpendicular to the direction of the nozzle, so that the problems are better solved. The coaxial type nozzle can be used in the industrial production of laser wet cutting machining.

Description

[0001] technical field [0002] The invention relates to a coaxial nozzle for laser micromachining of thin-walled pipes. Background technique [0003] Laser cutting technology is widely used in the processing of metal and non-metal materials due to its advantages of reducing processing time, reducing processing costs and improving workpiece quality, and laser cutting processing is gradually replacing traditional cutting tools. [0004] Laser micromachining has become the main method for thin-walled pipe processing due to its high processing efficiency, less cutting residue, non-contact processing, and easy automation of the processing process. The laser cutting of thin-walled pipe is to move the overlapping laser pulse points along the cutting line on the pipe, and at the same time input high pressure oxygen to assist melting and cutting. The material at the laser focus point is melted and gasified, and the slag is blown out by the gas, forming a cutting track on the metal ...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that in the process of laser processing micro-diameter pipes in the prior art, the loss of the laser nozzle is relatively large and the water guiding mechanism is complicated. Type nozzle, the use of this nozzle has the advantages of small laser loss, small thermal damage to parts, and simple water guide mechanism

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