Device and method for detecting large-size shaft part

A technology for shaft parts and detection devices, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of inability to assemble, small measurement range, and inability to accurately judge whether shaft parts meet the design requirements, etc., to eliminate installation Error, the effect of improving measurement accuracy

Active Publication Date: 2016-11-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing method of measuring the shaft diameter using a light-transmitting sensor generally only uses one set of sensors and only measures one position, the measurement range is small, and the sensor assembly error cannot be corrected, and it is also impossible to measure the shaft diameter and length. It is impossible to accurately judge whether the shaft parts meet the design requirements, resulting in failure to assemble later

Method used

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  • Device and method for detecting large-size shaft part
  • Device and method for detecting large-size shaft part
  • Device and method for detecting large-size shaft part

Examples

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Embodiment approach

[0070] As an optional implementation manner, the method for obtaining the calibration parameter A specifically includes:

[0071] Obtain the position coordinates P*3 of the standard axis detected by the head of the grating ruler, and construct a position coordinate array P*3[n];

[0072] At the same time, obtain the upper light curtain length P*1 and the lower light curtain length P*2 corresponding to the position coordinate P*3 of the standard axis detected by the light transmission sensor group;

[0073] Carry out linear fitting to described upper light curtain length P * 1 and described lower light curtain length P * 2 respectively, obtain the straight line J corresponding to described upper light curtain length P1 1 x+K 1 y+L 1 =0 and the straight line J corresponding to the length P2 of the lower light curtain 2 x+K 2 y+L 2 = 0;

[0074] According to the straight line J 1 x+K 1 y+L 1 = 0 and J 2 x+K 2 y+L 2 =0 Calibration parameter A:

[0075] Where x is th...

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Abstract

The invention discloses a device for detecting a large-size shaft part. The device comprises a to-be-detected shaft support mechanism, a light transmission sensor group and a grating ruler, the to-be-detected shaft support mechanism comprises a support platform, a rotary platform, a free slideway, a tailstock and a guiderail, the rotary platform is provided with a first shifting top tip, the tailstock is provided with a second shifting top tip, the first shifting top tip and the second shifting top tip are used for fixing a to-be-detected shaft, the light transmission sensor group comprises an upper sensor and a lower sensor of an installation frame, the bottom part of the installation frame is connected with the guiderail through a slide block movably, the grating ruler and the guiderail are fixed on the support platform in a parallel manner, and a header of the grating ruler is arranged on the slide block. The device corrects the assembly error of the sensor, data of shaft diameter and shaft length of various segment positions of the to-be-detected shaft are measured, points not meeting the specifications on the to-be-detected shaft are marked, and the purposes of accurate measurement and wide scope of measurement are fulfilled.

Description

technical field [0001] The invention relates to the technical field of shaft parts detection, in particular to a large-size shaft parts detection device and method. Background technique [0002] At present, with the continuous improvement of machining precision and efficiency, the requirements for measuring devices are also getting higher and higher. The measurement accuracy and measurement efficiency of measuring devices seriously affect the development of the entire industry. The existing method of measuring the shaft diameter using a light-transmitting sensor generally only uses one set of sensors and only measures one position, the measurement range is small, and the sensor assembly error cannot be corrected, and it is also impossible to measure the shaft diameter and length. It cannot be accurately judged whether the shaft parts meet the design requirements, resulting in failure to assemble later. Contents of the invention [0003] The object of the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/08G01B11/02
CPCG01B11/02G01B11/08
Inventor 刘长英刘洋高乐郭继东褚馨泽王瑞剑王喜超
Owner JILIN UNIV
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