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Visual positioning method for galvanometer jigsaw puzzle processing based on paraxial vision structure

A visual positioning and visual technology, applied in metal processing equipment, manufacturing tools, instruments, etc., can solve the problems of calculation errors, inability to calculate, dislocation, etc., to achieve the effect of small calculation amount, less error-prone, and high splicing accuracy

Active Publication Date: 2022-04-08
WUHAN HGLASER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And when calculating, the image files of each block cannot be calculated directly with the center point of the galvanometer, which will cause misalignment and calculation errors

Method used

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  • Visual positioning method for galvanometer jigsaw puzzle processing based on paraxial vision structure
  • Visual positioning method for galvanometer jigsaw puzzle processing based on paraxial vision structure
  • Visual positioning method for galvanometer jigsaw puzzle processing based on paraxial vision structure

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Embodiment

[0064] Such as figure 2 As shown, this embodiment provides a visual positioning method based on paraxial visual structure galvanometer jigsaw puzzle processing. figure 2 for theoretical graphics. The method comprises the steps of:

[0065] Step 1: On the basis of the positioning accuracy of the motion control platform < 1um, repeatability < 0.5um, repeatability of the galvanometer < 2urad, and a focal length of about 160mm, correct with a format of 50mm*50mm, and the positioning accuracy of the galvanometer after correction is <±5um .

[0066] Step 2: Correct the visual error, and the compensation values ​​in the XY direction are dboffsetX and dboffsetY respectively.

[0067] Step 3: If image 3 As shown, the result after segmentation is obtained.

[0068] Such as image 3 As shown, Center1-1, Center1-2, Center1-3, Center2-1, Center2-2, Center2-3 are the center points to be marked each time, and L1~L10 are the paths to be processed.

[0069] Save the following data: ...

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Abstract

The invention discloses a visual positioning method for galvanometer jigsaw puzzle processing based on a paraxial visual structure. Firstly, the precision of the galvanometer is corrected and a galvanometer correction file is generated, and the visual error is corrected through the galvanometer correction file; Calculate the path that needs to be processed for each block after division, and only need to perform direction offset and angle rotation during the processing; then perform visual positioning, find the coordinates of the reference point, and the corresponding offset rotation; based on the reference point and the offset rotation amount to perform graphic transformation, convert the points on the motion platform coordinate system into the coordinate values ​​under the galvanometer coordinate system, and these coordinate values ​​can be directly sent to the galvanometer system for processing during processing; the motion control platform is moved The coordinate position of the center point under the platform coordinate system, the coordinate value of the feature point of the processing path line segment is sent to the galvanometer system for processing, and after the processing of the current block is completed, other blocks are processed sequentially until all blocks are processed.

Description

technical field [0001] The present invention relates to the technical field of high-precision large-format vibrating mirror processing, such as flexible circuit boards, that is, FPC material processing, and especially relates to the use of a motion platform to cooperate with vibrating mirrors to splice the processing area to realize the scene of large-format product processing, especially In order to improve the machining accuracy, the coordinate calculation when using the industrial camera for visual positioning is specifically a visual positioning method based on paraxial vision structure galvanometer jigsaw puzzle processing. Background technique [0002] Due to the limitation of the processing format of the galvanometer, the processing of large-format graphics in the field of laser processing is mainly completed by splicing, that is, the large-format image file is divided into several squares (the area of ​​each square should be smaller than the maximum size of the galvan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/70B23K26/38G01B11/00
CPCB23K26/702B23K26/38G01B11/002
Inventor 徐蓝青王雪辉王建刚
Owner WUHAN HGLASER ENG CO LTD