A handheld self-adaptive laser cleaning device with folded optical path

Abstract

The invention provides a folded light path type handheld self-adaption laser cleaning device. The device comprises a lifting focusing assembly, a laser distance measuring sensor, a galvanometer scanning system, a lifting guide electric drive assembly and a laser-folded path system. The galvanometer scanning system is used for focusing incident laser beams on the surface of a workpiece and making the laser beams do scanning motion on the surface of the workpiece according to a set track; the lifting focusing assembly is arranged under the emergence end of the laser beams of the galvanometer scanning system, the laser distance measuring sensor is installed on the lateral side of the galvanometer scanning system, a laser device id arranged in the laser-folded path system, and the output end of the laser-folded path system is fixedly connected with the emergence end of the laser beams of the galvanometer scanning system, so that the output laser beams of the laser-folded path system become the emergence laser beams of the galvanometer scanning system; the lifting guide electric drive assembly is arranged below the bottom of the laser-folded path system. In the folded light path type handheld self-adaption laser cleaning device, the laser device and a laser cleaning machining head are combined so that the cleaning machining precision, quality and efficiency can be effectively improved.

Description

technical field [0001] The invention belongs to the field of laser cleaning, and in particular relates to a hand-held self-adaptive laser cleaning device with folded optical paths. Background technique [0002] Cleaning is aimed at the dirt, rust or coating on the surface of the material, using chemical or physical principles to make it evaporate or peel off instantly, that is, to remove the surface attachment or surface coating of the object and obtain a clean material surface. [0003] At present, there are two types of surface cleaning technologies at home and abroad: chemical cleaning and physical cleaning. Chemical cleaning mainly uses chemical reactions to remove the main chemical components in the dirt. Due to incomplete cleaning and the discharge of a large amount of acid and salt during cleaning, it pollutes the environment and corrodes equipment, so the scope of application is relatively small. In contrast, the physical cleaning method is to apply physical action ...

AI Technical Summary

Problems solved by technology

Studies have shown that dry ice cleaning is most effective when it is applied to remove non-metallic dirt from metal substances. Therefore, it is widely used to clean organic residues or pollutants in precision parts and molds. The disadvantage is that it is difficult to clean stubborn metal oxides. thorough

Gas blast cleaning has good performance on stubborn stains such as various inks, paints and coatings. Famous aviation manufacturing companies such as Boeing and Airbus as well as the U.S. Air Force are using gas blast cleaning technology to remove paint from aircraft, but its shortcomings The reason is that the cost of consumables is high, the cleaning depth is limited, and there are problems such as microscopic residues and mechanical stress deformation.

The disadvantage of ultrasonic cleaning technology is that it is limited by the size of the cleaning pool equipment. It is generally only suitable for cleaning small parts in the workshop. It is difficult to clean large parts online, and it will also produce a lot of pollution and toxic waste water.

[0010] 1) Most of the laser cleaning machines are handheld devices, and the control method completely depends on the operator holding the cleaning processing head, and relying on the human eye (or using a distance sensor) to maintain a reasonable focus range of the laser beam on the surface of the workpiece, resulting in poor precision and physical exertion Large, cleaning efficiency is not high

[0011] 2) Generally, pulsed lasers transmitted by optical fibers are used for cleaning and processing. The laser is separated from the laser cleaning and processing head, and the laser and the laser cleaning and processing heads at both ends are coupled through the transmission fiber. Due to the loss of the transmission fiber itself, the limited maximum transmission length, and the limited The minimum bending radius of the optical fiber and the fragile optical fiber coupling interface make the optical fiber a vulnerable item of this type of equipment, and the normal service life of the equipment is greatly affected, resulting in high depreciation costs for cleaning and processing equipment

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