Method for measuring deviation of nominal size of bore diameter of bearing inner ring

A bearing inner ring and measurement method technology, applied in the direction of mechanical diameter measurement, etc., can solve the problems of low work efficiency, heavy labor, and hollow steel pipes affecting the accuracy of measurement, etc., and achieve simple structure, reduced measurement error, and light weight Effect

Inactive Publication Date: 2011-12-14
LUOYANG BEARING SCI & TECH CO LTD
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  • Claims
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Problems solved by technology

[0004] Although the above-mentioned method of measuring the inner diameter of the bearing inner ring with a pipe ruler or an inner micrometer is intuitive and easy to operate, the deflection of the hollo

Method used

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  • Method for measuring deviation of nominal size of bore diameter of bearing inner ring
  • Method for measuring deviation of nominal size of bore diameter of bearing inner ring
  • Method for measuring deviation of nominal size of bore diameter of bearing inner ring

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Embodiment Construction

[0023] The invention relates to a method for measuring the deviation of the nominal size of the inner diameter of the inner ring of the bearing. The nominal size of the inner diameter of the inner ring of the bearing to be tested is set to 2r, and r is the radius of the inner ring of the bearing to be tested.

[0024] The measuring method of the present invention comprises measuring device, reference proofreading and measuring process three parts content, and these three parts content are described as follows:

[0025] combine figure 1 , the measuring device is designed according to the principle of "three points to determine a circular arc". The measuring device includes the first positioning ball 1, the positioning sleeve 2, the compression spring 3, the cover plate 4, the measuring instrument 5, the measuring rod 6, and the balance frame 7 , the second positioning ball 8, the limit sleeve 9 and the radially moving positioning ball 10, the symmetrical center of the gimbal 7 ...

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Abstract

Disclosed is a method for measuring the deviation of the nominal size of the bore diameter of a bearing inner ring. The measuring device is composed of a first positioning ball (1), a positioning sleeve (2), a pressure spring (3), a cover plate (4), a measuring instrument (5), a measuring rod (6), a balancing rack (7), a second positioning ball (8), a positioning sleeve (9) and a radial moving positioning ball (10). Reference calibration is based on h=r-1/2(4r2-C3)1/2, a first standard block (11), a second standard block (12), a third standard block (13) are provided, and an original value is obtained. The distance between two points where first positioning ball and the second positioning ball contact with the bearing inner ring is equal to the chord length of the bearing inner ring with a bore diameter of 2r, a height difference h formed by the connecting line of the horizontal line of the contact point of the radial moving positioning ball and the inner ring bearing, and the distance of the two points is equal to the chord height of the bearing inner ring with a bore diameter of 2r, so that the difference between the measuring value and the original value is the deviation of the nominal size of the bore diameter of the bearing inner ring.

Description

technical field [0001] The invention belongs to the technical field of bearing measurement, in particular to a method for measuring the nominal size deviation of the inner diameter of the bearing inner ring. Background technique [0002] For bearings with larger specifications, the measurement of the nominal size deviation of the inner ring inner diameter usually uses a pipe ruler or an inner diameter micrometer. The measurement accuracy and accuracy of the nominal size deviation of the inner ring inner diameter of the bearing are directly related to various performance indicators of the finished bearing. It is also related to the fit tolerance of the matching parts with the inner ring of the bearing. [0003] The measurement of the tube ruler is to use a hollow stainless steel tube, one end is connected with a ball head similar to half a steel ball, and the other end is fixed with a dial indicator. After adjusting the size of the tube ruler on the standard measuring instrum...

Claims

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Application Information

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IPC IPC(8): G01B5/12
Inventor 苏兆力李媛媛张俊江马勇高聪颖
Owner LUOYANG BEARING SCI & TECH CO LTD
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