Coaxial water jet device used for laser micro machining of thin-walled tube

Abstract

The invention relates to a coaxial water jet device used for laser micro machining of a thin-walled tube, which mainly solves the problem in the prior art that when a small size part is cut by laser, the machining quality is affected by over-incandescence and mass deposition of cooling fragments on the surface of the machined part. The technical scheme adopted by the invention is as follows: the coaxial water jet device is of a hollow cylinder shape, a 45-degree reflecting mirror is arranged inside the coaxial water jet device, a side wall of the cylinder is provided with an illumination light source, a laser generator is arranged under the illumination light source, a focusing mirror is arranged under the reflecting mirror, water jet passes through a double-layer structure of a nozzle, and the nozzle is connected with a high pressure water supply unit through a water inlet in the side wall, so that the problem is better solved. The coaxial water jet device can be used in the industrial production of the laser micro machining of the thin-walled tube.

Description

[0001] technical field [0002] The invention relates to a coaxial water jet device for laser micromachining of thin-walled pipes. Background technique [0003] 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 pipes 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 pipe wall. Molten gas and slag are emitted outward at first, but eventually, most of the vapor becomes debris that spreads around the ablated patterned surface and within the grooves. The formation of debris destroys the appearance and performance of the part. It also reduces...

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, the heat generated will cause thermal damage to the parts, the debris is not easy to remove, and the service life of the processed workpieces is low. It provides a laser for thin-walled pipes. Micromachining coaxial water jet device, which is used to process thin-walled pipes with small diameters, has the advantages of small thermal damage, easy removal of debris, and long service life of processed workpieces

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