Deep hole inner diameter measuring system
A measurement system and deep hole technology, applied in the direction of mechanical diameter measurement, etc., can solve the problems of inability to achieve long deep hole inner diameter measurement and low precision of deep hole inner diameter measurement, and meet the requirements of simple structure and lower mechanical precision. The effect of high sensitivity
Active Publication Date: 2016-08-31
NAT INST OF METROLOGY CHINA
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Problems solved by technology
[0004] The invention provides a deep hole inner diameter measurement system to solve the problems that the measurement of the inner diameter of the longer deep hole cannot be well realized at present and the measurement accuracy of the inner diameter of the deep hole is low
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[0056] The embodiment of the present invention provides a deep hole inner diameter measurement system to solve the current problems that the measurement of the inner diameter of a longer deep hole cannot be well realized and the measurement accuracy of the inner diameter of the deep hole is low.
[0057] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention are described below in conjunction with the accompanying drawings The program is described in further detail.
[0058] Please refer to the attached figure 1 , figure 1 A schematic structural view of a deep hole inner diameter measurement system provided by an embodiment of the present invention is shown. figure 1 The shown structure inc...
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The deep hole inner diameter measurement system disclosed by the present invention includes a measuring body that moves axially along the deep hole and a measurement and control device connected to the measuring body; the measuring body includes: a cavity; at least three rows of supporting rollers uniformly distributed outside the cavity, the supporting rollers One of them is a driving wheel with a drive; at least two stop balls evenly distributed outside the cavity; a rotating measuring disc arranged at one end of the cavity, and a plurality of holes for measuring the inner diameter of the deep hole are arranged in the radial direction of the rotating measuring disc. The eddy current displacement sensor, the eddy current displacement sensor is designed based on the simple series resonance principle to achieve a high sensitivity of 20mv / μm within a 1mm measurement range; the stop ball, the driving wheel, and the rotating measuring disc are respectively driven by the corresponding driving device; the measurement and control device It includes a first control module, a second control module, a third control module and a measurement calculation module for processing voltage signals output by a plurality of eddy current displacement sensors and calculating the inner diameter of the deep hole. The above system can realize the measurement of the inner diameter of the deep hole and improve the measurement accuracy of the inner diameter of the deep hole.
Description
technical field [0001] The invention relates to the technical field of hole inner diameter measurement, and more specifically, relates to a deep hole inner diameter measurement system. Background technique [0002] The fields of national defense, military, industrial production and scientific research have a wide range of requirements for the measurement of the inner diameter of holes, especially deep holes (more than 3m in depth), such as the measurement of the inner diameter of artillery pipelines, the measurement of the inner diameter of deep holes in hydraulic power systems in construction machinery, and oil drilling. Pipe inner diameter measurement, inner diameter measurement of long pipes for fluid research, etc. With the advancement of science and technology, the requirements for the measurement of the inner diameter of deep holes are getting higher and higher. For example, the accuracy higher than 10μm / 50mm is required, and it should be measured at the processing sit...
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IPC IPC(8): G01B5/12
Inventor 高宏堂叶孝佑王鹤岩
Owner NAT INST OF METROLOGY CHINA