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Five-point cylindricity error separation measurement method

A technology of cylindricity error and measurement method, applied in the direction of measuring devices, instruments, etc., can solve problems such as difficulty in meeting online measurement requirements, high cost of instruments, etc.

Active Publication Date: 2019-06-14
HEFEI UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In principle, the cylindricity measurement system must involve the rotary shaft system and linear motion guide rail. The traditional cylindricity measuring instrument is equipped with high-precision rotary shaft system and linear motion guide rail as the reference for rotary motion and linear motion, so the cost of the instrument is high, and It is difficult to meet the needs of online measurement

Method used

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  • Five-point cylindricity error separation measurement method
  • Five-point cylindricity error separation measurement method
  • Five-point cylindricity error separation measurement method

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Embodiment Construction

[0042] In this example, if figure 2 with image 3 As shown, the left frame 6 and the right frame 7 are fixed at both ends of the measured body 13, on which the fourth sensor 4 and the fifth sensor 5 are installed respectively, to sense the X-direction radial displacement of the cross-section at the left and right ends of the measured body 13 , the axial distance between the fourth sensor 4 and the fifth sensor 5 is L; the center frame 11 is supported on the mobile platform 12, and the mobile platform 12 is supported by the Z guide rail 10 and drives the center frame 11 to move along the Z direction , the Z guide rail 10 is parallel to the axial direction of the measured body 13, so that the moving step distance of the middle measuring frame 11 along the Z direction is d, and the middle measuring frame 11 is provided with a middle section perpendicular to the axial direction of the measured body 13. The first sensor 1 to the third sensor 3 are installed on it to sense the rad...

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Abstract

The invention discloses a five-point cylindricity error separation measuring method. Through measuring data acquired by three axial cross sections and five measuring heads, based on a specific error separation method, circular geometric central vectors of cross sections of a measured cylinder are extracted by regarding a connecting line of circular geometric centers of a left fixed cross section and a right fixed cross section of the measured cylinder as the datum so that data reconstruction of the cylindrical shape by regarding the connecting line of the circular geometric centers of the cross sections of the measured cylinders as the datum axis (usually not linear) is realized, and high-precision measurement and evaluation of shape errors including the cylindricity can be performed on the basis. According to the method, total harmonic separation of radial and inclination angle error motion of a shafting and linear error motion of a guide rail in a measuring process can be realized, high precision of measurement and reconstruction of the cylindrical shape is guaranteed, and the manufacturing cost of large-scale cylindrical shape online measuring equipment is reduced.

Description

technical field [0001] The invention relates to the field of precision testing technology and the design and manufacture of large-scale online measurement equipment, and is an error separation measurement method for measuring shape errors of cylindrical surface shapes including cylindricity, bus straightness and taper. Background technique [0002] Precision shaft roller (cylindrical) is the core component of equipment for the production of solar panels, LCD screens, automotive steel plates, high-quality paper, and industrial composite panels. etc. will be copied to the product, causing product surface quality problems. Therefore, how to measure the shape error such as the cylindricity of the precision shaft roller is a technical problem to be solved urgently in the equipment manufacturing industry. In principle, the cylindricity measurement system must involve the rotary shaft system and the linear motion guide rail. The traditional cylindricity measuring instrument is equ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/20
CPCG01B21/20
Inventor 刘文文陈婉玉刘善林胡毅胡鹏浩王标
Owner HEFEI UNIV OF TECH
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