A kind of laser cleaning equipment and its focus maintaining method

Abstract

The invention discloses a laser cleaning device and a focus maintaining method thereof. The device includes: a control box and a mechanical module; the mechanical module includes a screw module, a servo motor, a laser cleaning head and a distance measuring sensor module; the control box A controller and a servo drive module are installed inside; the upper end of the screw module is connected to the servo motor through a coupling; the front slider of the screw module is connected to the laser cleaning head; the lower end of the screw module is connected to the distance sensor module; the control The controller is electrically connected to the servo motor through the servo drive module; the distance measurement sensor module measures the distance data between the screw module and the cleaning surface in real time and feeds it back to the controller, and the controller processes the distance data to generate the moving distance of the screw module , and drive the servo motor to run through the servo drive module, and then drive the screw module to adjust the position of the laser cleaning head. The invention realizes the maintenance of the laser cleaning focus on the surface of complex objects, thereby ensuring the cleaning effect and cleaning efficiency.

Description

technical field [0001] The invention relates to the technical field of laser cleaning, in particular to a laser cleaning device and a focus maintaining method thereof. Background technique [0002] The existing laser cleaning technology uses laser focusing to clean the metal surface contamination layer. According to the optical characteristics of field lenses with different focal lengths, the laser beam generally has a focal depth of 1-4mm at the focal position. In order to maintain cleaning efficiency, the focus must be ensured during cleaning. The position change does not exceed the focal depth range. The traditional laser cleaning method uses a hand-held cleaning head to maintain the focal length by observing with the naked eye and adjusting the distance between the laser hand-held head and the cleaning surface in real time. When the situation is low, the focus is difficult to maintain and the cleaning effect is poor. Contents of the invention [0003] The object of t...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a laser cleaning device and its focus maintaining method, so as to solve the problems that it is difficult to maintain the focus when cleaning the surface of irregular objects by the traditional laser cleaning method, resulting in poor cleaning effect, low cleaning efficiency, and failure to realize automatic production.

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