Method for automatically obtaining laser focal point and machining device for automatically obtaining laser focal point
An automatic acquisition and processing device technology, which is applied in the field of laser marking, can solve the problem that the laser focus method cannot obtain accurate focus, etc., and achieve the effect of high accuracy and improved work efficiency
Inactive Publication Date: 2019-06-25
HANS LASER TECH IND GRP CO LTD
View PDF5 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a method for automatically obtaining laser focus to overcome the defect that the existing method for obtaining laser focus cannot obtain accurate focus in view of the above-mentioned defects of the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] Now in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.
[0021] Such as figure 1 As shown, the method for automatically obtaining laser focus of the present invention comprises the following steps:
[0022] S1. Preset a marking pattern composed of horizontal lines and vertical lines and a safe stroke range;
[0023] S2. According to the marking pattern, within the safe stroke range, the step distance St 0 Carry out laser marking to form a number of first marking tracks composed of horizontal lines and vertical lines;
[0024] S3. Perform image acquisition for each first marking track, measure the horizontal line width and vertical line width of the first marking track, compare and obtain the first marking track with the smallest horizontal line width and vertical line width, and obtain The Z-axis coordinate Z of the first marking track 1 , the Z-axis coordinate Z 1 is the roughly measured f...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Wavelength | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to the technical field of laser marking, in particular to a method for automatically obtaining a laser focal point. The method for automatically obtaining the laser focal point comprises the following steps: a marking pattern consisting of a transverse line and a longitudinal line and a safety travel range are preset; a first marking trajectory is formed through laser markingby a pace according to the marking pattern; the image acquisition is performed on the first marking trajectory; a transverse line width and a longitudinal line width of the first marking trajectory are measured, and are compared to obtain the smallest first marking trajectory of the transverse line width and the longitudinal line width; Z-axle coordinates of the first marking trajectory are obtained, and are rough-measured focal point coordinates; a finish-measured marking section is preset; a second marking trajectory is formed through laser marking by the pace according to the marking pattern; the image acquisition is performed on the second marking trajectory; a transverse line width and a longitudinal line width of the second marking trajectory are measured, and are compared to obtainthe smallest second marking trajectory of the transverse line width and the longitudinal line width; and Z-axle coordinates of the second marking trajectory are obtained, and are focal point Z-axle coordinates.
Description
technical field [0001] The invention relates to the technical field of laser marking, in particular to a method for automatically obtaining a laser focus and a processing device for automatically obtaining a laser focus. Background technique [0002] In the post-focus laser marking system, after collimation and beam expansion, the laser light source is irradiated onto the scanning galvanometer. The scanning galvanometer swings under the control of the marking control system connected to the computer system, and scans on the two-dimensional plane X and Y. form a flat image. The laser beam is focused on the surface of the processed object through the lens to form tiny, high-energy-density spots. Each high-energy laser pulse instantly breaks the molecular bonds on the surface of the processed material to form marking marks. The marking control system permanently marks the surface of the material according to the pre-designed characters, graphics and other content. The laser f...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B23K26/046
Inventor 曹洪涛黄海庆代雨成杨柯高云峰
Owner HANS LASER TECH IND GRP CO LTD