Measurement method of axial size of abrupt-change cross section of revolving body

A technology of axial dimension and rotary body, applied in the field of rapid measurement of axial dimension, to achieve the effect of simple measurement procedure, easy data processing and fast measurement speed

Inactive Publication Date: 2009-11-04
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0006] The purpose of the present invention is to propose a general method for measuring the axial dimension of the sudden change section of the rotary body, which uses a non-contact senso

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  • Measurement method of axial size of abrupt-change cross section of revolving body
  • Measurement method of axial size of abrupt-change cross section of revolving body
  • Measurement method of axial size of abrupt-change cross section of revolving body

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[0029] Examples:

[0030] Use the method of the present invention to measure such as figure 1 The measured slewing body shown needs to measure the axial size of each abrupt cross-section. The steps are as follows:

[0031] 1. The high-precision linear array CCD sensor and the parallel light emitter are located on the symmetrical sides of the rotating body, the contour of the rotating body is imaged on the CCD, and the optical image processing technology is used to output two measured values ​​in the radial direction of the rotating body at this point When the CCD sensor moves along the axial position in sequence, two contours of the revolving body are obtained, which constitute a longitudinal section of the revolving body. Due to the installation error of the revolving body, the shape of the revolving body obtained by the measurement has a certain tilt, such as figure 2 Shown.

[0032] 2. According to the measured longitudinal section profile data, find the symmetry axis of the ...

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Abstract

The invention belongs to the technical field of manufacture and measurement of measuring devices, more particularly relates to a high-precision automatic measurement method of axial size of abrupt-change cross section of a revolving body. The measurement method is based on the principles of adopting a high-precision linear array CCD optical imaging technology and a high-precision motion control technology, performing rapid measurement on a contour line at longitudinal section of the revolving body to obtain contour data of the revolving body, calculating curvature change of the contour line of the revolving body, and seeking local extremum points of the curvature change on the contour line to obtain the axial position of the abrupt-change cross section, thus calculating the axial size of the abrupt-change cross section. The measurement method is suitable for rapid measurement of the axial size of grooves, benches, frustums and the like of various complex revolving body parts, and the method is especially suitable for revolving body parts which are provided with small-space grooves and can not be easily measured by a contact method.

Description

Technical field [0001] The invention proposes a universal measuring method for the axial dimension of the abrupt cross-section of a slewing body, which is mainly used for the rapid measurement of the axial dimensions of grooves, steps and frustums on the slewing body. Background technique [0002] The revolving body is a common part shape, and its axial size often affects the assembly performance or use performance of the part. The revolving body has multiple grooves, steps, truncated cones, etc., and multiple axial dimensions need to be measured. For such a complex rotating body, it has always been a difficult problem to quickly and accurately measure the axial dimensions of grooves, steps and frustums. The existing measurement methods are roughly divided into several types: [0003] 1. Contact direct measurement method: Use measuring tools or instruments such as micrometers, vernier calipers or altimeters to directly measure grooves, steps, etc. This method can measure grooves ...

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Application Information

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IPC IPC(8): G01B11/02G01B11/24G01B11/03
Inventor 徐春广孟凡武郝娟肖定国周世圆贾玉平赵新玉冯忠伟尚妍
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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