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Method and device for single-sided feature detection of special-shaped guide rail based on laser line structured light

A feature detection and structured light technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of regular measurement objects, single measurement results, and low automation level, and achieve the goal of improving measurement speed and accuracy and enriching measurement results Effect

Active Publication Date: 2017-10-24
中机试验装备股份有限公司
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Problems solved by technology

[0009] The invention provides a single-sided feature detection method and device of a special-shaped guide rail based on laser line structured light to solve the problems of regular measurement objects, single measurement results, and low automation level in existing methods

Method used

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  • Method and device for single-sided feature detection of special-shaped guide rail based on laser line structured light
  • Method and device for single-sided feature detection of special-shaped guide rail based on laser line structured light
  • Method and device for single-sided feature detection of special-shaped guide rail based on laser line structured light

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Experimental program
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Embodiment Construction

[0046] Including the following steps:

[0047] (1) After placing the workpiece in place, the mobile platform drives the workpiece to measure from one end to the other end;

[0048] (2) The mobile platform triggers the laser line structured light displacement sensor every time it moves a fixed distance, and simultaneously measures the displacement data in a single section of the upper surface and the side surface;

[0049] (3) Analyze the displacement data in this section;

[0050](4) By analyzing the upper surface data, the upper edge position value of the side surface is obtained, and the characteristic value of the vertical direction of the upper surface is obtained, so that the error introduced by gravity bending can be corrected;

[0051] (5) By analyzing the side surface data and combining the eigenvalues ​​in the vertical direction of the upper surface, the eigenvalues ​​in the horizontal direction in a specific area are obtained;

[0052] (6) Obtain the twist angle ei...

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Abstract

The invention relates to a method and device for detecting single-sided features of a special-shaped guide rail based on laser line structured light, which belongs to the detection method and device for single-sided features of a special-shaped guide rail. It includes a base platform with a linear module, the servo motor drives the mobile platform to move on the linear module of the base platform, the workpiece to be measured is placed on the two positioning brackets on the mobile platform, and moves with the mobile platform; the laser line structure The optical displacement sensor is fixed on the sensor bracket, the laser line structured light plane is perpendicular to the horizontal plane, perpendicular to the measured workpiece, and its center normal forms an angle β with the horizontal plane. The invention uses a laser line structured light displacement sensor for measurement, realizes online non-contact measurement, and quickly obtains enough measurement points, improves measurement speed and accuracy; enriches measurement results, and can provide side straightness curves and side twist curves , Schematic diagram of the surface profile.

Description

technical field [0001] The invention relates to a method and device for detecting single-sided features of irregular-shaped guide rails, in particular to a method and device for detecting single-sided features of special-shaped guide rails based on laser line structured light. Background technique [0002] With the improvement of industrial automation level, more and more fields require high-quality guide rails, so the quality inspection of guide rails is becoming more and more important, especially the detection of single-sided features of irregular-shaped guide rails. [0003] For a long time, the detection of guide rails has relied on manual operations. Surface defects and edge missing have been visually inspected, straightness has been measured by artificial platform feeler gauges, and twisting has been measured by manual angle rulers. This manual measurement method is relatively primitive, accurate and efficient. Not high, which hinders rapid production. [0004] In re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24G01B11/26
Inventor 许太云峰王永明袁德志杨永贺张泳陈景光张鹏
Owner 中机试验装备股份有限公司
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