Standard set for length measurement and calibration

A technology of length measurement and standard, which is applied in the field of geometric quantity measurement, can solve the problems of large measurement error and low accuracy of geometric quantity measurement, and achieve the effects of good dimensional stability, small thermal expansion coefficient and accurate ball center distance

Pending Publication Date: 2018-08-24
NAT INST OF METROLOGY CHINA
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a standard set for length measurement and calibration with high measurement accuracy and small measurement error, so that the problems of low measurement accuracy and large measurement error of geometric quantities existing in the prior art can be solved

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  • Standard set for length measurement and calibration
  • Standard set for length measurement and calibration
  • Standard set for length measurement and calibration

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] The object of the present invention is to provide a standard set for length measurement calibration with high measurement accuracy and small measurement error, so that the problems of low measurement accuracy and large measurement error of geometric quantities in the prior art can be solved.

[0026] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in...

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Abstract

The invention discloses a standard set for length measurement and calibration. The standard set comprises a base, supporting bars and standard balls, wherein a bottom plate is provided with a plurality of through holes, one ends of the supporting bars are arranged in the through holes, and the other ends of the supporting bars are provided with ball sockets, the standard balls are arranged in theball sockets, and an adhesive is arranged between each standard ball and the bottom surface of the corresponding ball socket. According to the standard set provided by the invention, through processing the ball sockets on the top ends of the bars, and by adopting a manner of fixing the standard balls with the adhesive, no destructive processing is performed on the standard balls, and the problem that the veracity of a measuring result is reduced due to the damage of the standard balls is avoided, so that the whole spherical surface can be used in a CT measuring process, and the veracity of themeasuring result is improved.

Description

technical field [0001] The invention relates to the technical field of geometric quantity measurement, in particular to a standard set for length measurement calibration. Background technique [0002] Industrial CT is a popular name for CT technology applied in the industrial field. With the ability of industrial CT to observe the internal structure of parts, relevant internal defects and assembly errors can be easily detected without destroying the test piece, saving time and cost. In recent years, with its excellent three-dimensional imaging and internal and external structure detection capabilities, industrial CT is expanding from the traditional non-destructive testing field to the geometric measurement field. A complete industrial CT system can realize non-contact and non-damaging measurement of the internal and external structures of industrial parts. Especially for the internal structure of the workpiece, traditional measurement methods, such as a typical CMM (coord...

Claims

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Application Information

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IPC IPC(8): G01B15/00
CPCG01B15/00
Inventor 施玉书高思田宋小平皮磊张树金玮李伟李琪黄鹭李适
Owner NAT INST OF METROLOGY CHINA
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