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Visual positioning method based on side-axis visual structural galvanometer puzzle processing

A visual positioning and visual technology, applied in metal processing equipment, manufacturing tools, instruments, etc., can solve problems such as inability to calculate, dislocation, and calculation errors, and achieve the effects of less error-prone, less calculation, and improved processing efficiency

Active Publication Date: 2020-11-27
WUHAN HGLASER ENG CO LTD
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  • 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 based on side-axis visual structural galvanometer puzzle processing
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  • Visual positioning method based on side-axis visual structural galvanometer puzzle processing

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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 based on side-axis visual structural galvanometer puzzle processing. Firstly, the precision of a galvanometer is corrected, a galvanometer correction file is generated, and a visual error is corrected through a galvanometer correction file; drawing segmentation is then performed, the path required for each block to be processed after segmentationis calculated before processing, and only direction offset and angle rotating need to be performed in the processing process; visual positioning is then performed, and a reference point coordinate and a corresponding offset rotating amount are found; graphic transformation is conducted based on a reference point and offset rotating amount, points on a motion platform coordinate system are converted into coordinate values under a galvanometer coordinate system, and the coordinate values are directly sent to a galvanometer system for processing during processing; and a motion control platform is moved to the coordinate position of the center point under a platform coordinate system, coordinate values of feature points of processing path line segments to the galvanometer system for processing, and other blocks are sequentially processed after processing of the current block is completed until processing of all the blocks is completed.

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 Applications(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
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