Positioning marking method applicable to large format

A large-format, wide-format technology, applied in the field of laser marking, can solve problems such as inapplicability to high-precision processing, and achieve the effect that high-precision and large-format processing cannot coexist

Inactive Publication Date: 2020-04-10
苏州金橙子激光技术有限公司
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  • Application Information

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Problems solved by technology

Although this patent can quickly determine the focus position, which greatly simplifies the operation process...

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  • Positioning marking method applicable to large format

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Embodiment 1

[0046] as attached figure 1 As shown, a positioning marking method suitable for large format includes the following steps:

[0047] 101. Establish the corresponding relationship between the camera and the axis coordinate system through the calibration of the camera and the actual measurement of the camera format.

[0048] Wherein, the calibration method of the camera includes the following steps:

[0049] 201. Nine reference points with known intervals and equal intervals are marked on the metal nameplate by means of laser marking.

[0050] 202. Use an industrial camera to photograph the above-mentioned metal nameplate engraved with nine reference points, and then record the respective pixel coordinates of the nine reference points; when shooting, make the metal nameplate just cover the entire field of view of the industrial camera.

[0051] 203. According to the motion system coordinates and pixel coordinates of the above nine reference points, define the change matrix of t...

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Abstract

The invention relates to a positioning marking method applicable to a large format. The positioning marking method comprises the following steps: 101, by calibrating a camera and actually measuring the camera format, the corresponding relationship between the camera and an axis coordinate system is established; 102, a product is divided into a plurality of areas according to the actual format of the camera, a coordinate set of needed photographing points is calculated, the camera is moved to series coordinates to photograph, and a system splices received independent images of the multiple areas to obtain an integrated image; and 103, the integrated image is loaded on a processing panel to serve as a substrate, a processing drawing file is moved onto a marking position of the substrate, andthe to-be-processed product is marked according to the integrated image. The defects that in the prior art, due to the large workpiece format, the lens scanning area is limited, consequently high-precision and large-format marking cannot be achieved, and the application range of laser processing is limited are overcome, the positioning marking method is applicable to positioning marking of the large format, high-precision marking is achieved, and meanwhile assembly-line-type automation continuous and precise marking can be achieved.

Description

technical field [0001] The invention relates to the technical field of laser marking, in particular to a positioning marking method suitable for large format. Background technique [0002] At present, compared with developed countries in Europe and the United States, my country is still far behind in high-end manufacturing. With the advancement of the "Made in China 2025" national strategy, my country will focus on promoting the development of high-end manufacturing. As one of the basic technologies of modern high-end manufacturing, laser will continue to upgrade and expand new application scenarios, driving the continuous growth of the entire laser industry. [0003] Laser marking is the fastest-growing application technology in recent years. It uses high-energy-density laser to irradiate the workpiece locally to vaporize or change the color of the surface material, thereby leaving a permanent mark. Laser marking has many unique advantages. It can mark various characters, ...

Claims

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Application Information

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IPC IPC(8): B23K26/08B23K26/362B23K26/70
CPCB23K26/0876B23K26/362B23K26/702
Inventor 吴军龙刘福涛周杰
Owner 苏州金橙子激光技术有限公司
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