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Detection method for coaxiality of large diameter cylindrical surface

A detection method and technology of coaxiality, which is applied in the field of detection of coaxiality of large-diameter cylindrical surfaces, can solve the problems of no accurate and reliable methods, achieve the effect of wide application range and solve the difficult problem of coaxiality detection

Inactive Publication Date: 2008-12-10
CITIC HEAVY INDUSTRIES CO LTD
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  • Application Information

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Problems solved by technology

For the coaxiality detection of large-scale mechanical products such as holes or shafts with a diameter greater than 528mm, there is currently no accurate and reliable method

Method used

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  • Detection method for coaxiality of large diameter cylindrical surface
  • Detection method for coaxiality of large diameter cylindrical surface

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Embodiment Construction

[0019] exist figure 1 and figure 2 , place the sinusoidal centering frame A and the sinusoidal centering frame B on the inner circular surfaces of the two hollow shaft holes respectively, first place them at positions (6) and (8) respectively, and use a leather hammer to fine-tune them in the circumferential direction position on the sine centering frame A and the sinusoidal centering frame B on the combined image level (2) are all at zero; adjust the micrometer collimation telescope (5) in 4 degrees of freedom to make its optical axis ( 11) Pass through the center of the target hole (1) of the sinusoidal centering frame A and the sinusoidal centering frame B; at this moment, the optical axis (11) of the micrometer collimation telescope (5) is the reference axis.

[0020] Move the sinusoidal centering frame A and the sinusoidal centering frame B to positions (7) and (9) respectively, so that the combined image level (2) is at zero again, and aim at the sine wave through the ...

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Abstract

A detecting method for the proper alignment of a large diameter cylindrical surface is characterized by respectively arranging two sinusoidal centering frames at a certain location of the inner circle surface of the center axis hole of a detected object; after confirming a datum axis, respectively translating the two sinusoidal centering frames to a precise position, reading out the warps XA and YA as well as XB and YB of the opposite optical axes of the two sinusoidal centering frames on the horizontal direction and the vertical direction, then confirming the horizontal and vertical offsets of a largest offset point according to a smallest condition; calculating the error value of the proper alignment according to a formula that f is equal to <1 / 2>(X<2> plus Y<2>). The detecting method for the proper alignment solves the difficulty for detecting the proper alignments of the holes and axes the diameters of which are more than 700mm and has the characteristics of convenient operation and high location precision.

Description

Technical field: [0001] The invention relates to a coaxiality detection method, in particular to a detection method suitable for the coaxiality of a large-diameter cylindrical surface. Background technique: [0002] At present, the coaxiality is generally divided into the coaxiality of the hole and the coaxiality of the shaft. For the coaxiality detection of the holes of large-scale mechanical products, optical methods are used in practice, using a tripod to determine the center of the hole, and using a micro-collimation telescope to read the deviation of the hole center relative to the reference axis. But the tripod centering frame can only be used for the positioning of holes with diameters between 228mm and 528mm. For the coaxiality detection of large-scale mechanical products such as holes or shafts with a diameter greater than 528mm, there is currently no accurate and reliable method. The method for detecting the coaxiality of large-diameter cylindrical surfaces effec...

Claims

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Application Information

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IPC IPC(8): G01B11/27G01B9/06
Inventor 陈彬张农白杰
Owner CITIC HEAVY INDUSTRIES CO LTD