Accurate laser marking device and accurate laser marking method

Abstract

The invention provides an accurate laser marking device and an accurate laser marking method adopting the accurate laser marking device. The accurate laser marking method comprises the following stepsof acquiring an image of a pre-marked area through a camera and transmitting the image to a master control device; setting multiple marking points in the pre-marked area and the marking frequency ofeach of the multiple marking points through the master control device according to the image; generating a marking laser through a laser generator according to an instruction of the master control device; and controlling motion of a galvanometric scanner system through a galvanometric scanner control panel according to the instruction of the master control device to change the propagation direction of the laser. By means of the accurate laser marking method, it is guaranteed that the practical marking range and depth are consistent with the marking range and depth set by an operator in a master control program through correction of the scaling ratio and the offset correction; accordingly, the purpose of accurate marking is achieved.

Description

technical field [0001] The present invention relates to the field of laser marking, more specifically, to a precise laser marking device and a precise laser marking method. Background technique [0002] Lasers have the advantages of directional light emission, high collimation, and high energy density, so they are used in many fields, such as laser welding, laser cutting, laser therapy, laser marking, laser heat treatment, and laser coating. [0003] Laser marking technology is a marking method that focuses the laser on the processing surface and uses corresponding physical or chemical changes to form marks on the surface, which requires extremely high marking accuracy. [0004] There are two traditional laser marking methods, one is to mark according to the preset marking mode and fixed shape, and the other is to completely manually control the laser marking equipment for free marking by the operator. There are two problems in the above two laser marking methods: 1. The ta...

AI Technical Summary

Problems solved by technology

There are two problems in the above two laser marking methods: 1. The target range to be marked is not within the preset shape, and the operator's operation error will cause deviation or error in the actual marking range; 2. Due to the marking range in the equipment The engraving program does not have a preset shape that perfectly fits the area to be marked, so it cannot perfectly match the area to be marked, resulting in inaccurate marking