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Cylindrical part slope angle measuring method and angle measuring device thereof

An angle measurement, cylindrical technology, applied in the field of detection algorithms, can solve the problems of low detection efficiency, cumbersome placement process, difficult implementation, etc., to simplify the detection steps, improve the detection efficiency, and realize the effect of detection automation.

Pending Publication Date: 2020-06-16
MINNAN INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. It is necessary to adjust the horizontal output of the beam;
[0009] 2. The axis of the tested component must be coaxial with the axis of the light source, which is difficult to realize;
[0010] 3. Special fixtures are required for clamping, and the placement process is cumbersome;
[0011] 4. The detection must be picked up one by one and placed back one by one after the detection is completed; the detection efficiency is low;
[0012] 5. Traditional detection methods are difficult to achieve automation level

Method used

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  • Cylindrical part slope angle measuring method and angle measuring device thereof
  • Cylindrical part slope angle measuring method and angle measuring device thereof
  • Cylindrical part slope angle measuring method and angle measuring device thereof

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Embodiment 1

[0064] Such as figure 1 As shown, by measuring the basic parameters a' and φ of the projected ellipse, the major axis a of the real ellipse can be expressed by using mathematical functions; as Figure 8 As shown, the oblique section of the cylindrical element is projected through the projection module (CCD camera); and the oblique section projection profile of the cylindrical element is received and displayed through the receiving module. Such as Figure 4 As shown, the wedge angle plane is in the shape of an ellipse, and then the minor axis of the ellipse is marked as a by the minor axis marking module and the major axis marking module is marked as b. Place the measured element horizontally along the axis, and place the projection module (CCD camera) vertically in the direction of the axis of the ellipse to collect the ellipse contour projection. Such as Figure 5 shown. We observe that the minor axis of the ellipse is a, and the projections of the major axis b on the mi...

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Abstract

The invention discloses a cylindrical part slope angle measurement method and an angle measurement device thereof. The cylindrical part slope angle measurement method comprises the following steps of:a profile diagram acquisition step, which is implemented by acquiring a projection profile diagram of an inclined section of a cylindrical part; a parameter marking step, which is implemented by performing parameter marking on the drawn projection profile map; and an angle calculation step, which is implemented by calculating a slope angle of the cylindrical part through using a formula. When thecylindrical part is horizontally placed along the axis, all-attitude online wedge angle calculation under the conditions of axial 360-degree rotation and circumferential 360-degree rotation can be realized; the design and application of a detection system based on the algorithm can quickly and simultaneously detect a plurality of parts, simplify the detection steps, realize the detection automation and improve the detection efficiency; and the application of the cylindrical part slope angle measurement method does not need a special fixture to place a part for detection, so that errors causedby non-concentricity of part clamping, non-coaxiality of a light source and the part and the like are reduced. The invention provides an algorithm for detecting the slope angle of the cylindrical part, and further provides the design of the detection system based on the algorithm.

Description

technical field [0001] The invention relates to the field of detection algorithms, in particular to a method for measuring the slope angle of a cylindrical part and an angle measurement device thereof. Background technique [0002] Such as Figure 6 As shown, the laser beam emitted horizontally is irradiated on a horizontally placed product with a certain polishing wedge angle, and the reflected beam will form an angle twice the wedge angle with the horizontal axis. According to the relationship of plane triangle geometry, the reflected beam at a fixed distance The line deviation is converted into an angle, and the calculation formula is L=D·tan(2α), and then the angle value is marked as a group of concentric circles on the receiving screen, so that intuitive measurement results can be obtained. [0003] Detection process: [0004] 1. Calibrate the optical path: first replace the product with a standard 90-degree angle block, place it in the V-shaped groove of the loading p...

Claims

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Application Information

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IPC IPC(8): G01B11/26
CPCG01B11/26
Inventor 廖晓花张彦陟
Owner MINNAN INST OF SCI & TECH
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