A method for automatic focusing of laser cleaning machine

Abstract

The invention discloses an automatic focusing method for a laser cleaning machine, which relates to the technical field of laser cleaning. The key points of the technical solution are as follows: S1, aligning the focus measuring seat on the laser cleaning head; S2, controlling the vertical displacement through a controller mechanism, so that the vertical displacement mechanism drives the laser cleaning head to move; S3, the controller analyzes the strength of the received signal, selects the strongest signal value and determines its corresponding position, and determines the focus point of the laser cleaning head on the focus measuring seat ; S4. Align the surface of the workpiece to be cleaned with the focus measuring seat on the same horizontal plane; S5. Move the focus measuring seat horizontally, drive the workpiece to be cleaned to move to the position of the focus measuring seat, and the workpiece to be cleaned and the laser cleaning can be completed. AF job between heads. The present invention can perform focus adjustment and focus without damaging the workpiece to be cleaned, and the focus is performed automatically, the focus adjustment and focus are more precise, and the focus convenience and focus accuracy are improved.

Description

Technical field [0001] The present invention relates to the field of laser cleaning technology, more particularly, it relates to a laser cleaning machine automatic focusing method. Background [0002] Laser cleaning is a non-contact, safe and environmentally friendly cleaning method, with no grinding, non-contact, no thermal effect and suitable for a variety of materials and other cleaning characteristics. The workpiece to be cleaned is sometimes uneven and uneven, so it is necessary to focus the laser cleaning head. [0003] As the authorization announcement number is CN207126928U, the announcement date is 2018.03.23 Chinese patent discloses an automatic focus laser cleaning machine, comprising a workbench, beam, laser cleaning mechanism, ranging mechanism and positioning mechanism, the beam is located along the Y axis of the activity on the workbench, the laser cleaning machine mechanism is sliding along the X axis through the mount to be connected to the beam, the laser clean...

AI Technical Summary

Problems solved by technology

However, the laser cleaning head directly acts on the workpiece during the focusing process, and the laser continuously acts on the workpiece during the focusing process, which may cause damage to the workpiece, and the use of distance measurement to determine the focus is easily interfered by the medium, resulting in a certain error, which affects the measurement of distance data. The accuracy of the focus, which in turn affects the accuracy of the focus

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