Optical projection measurer for external diameter of large wheel diameter

An optical projection and measurement device technology, applied in the field of measurement, can solve the problems of large positioning error, long measurement optical path, and reduced measurement accuracy, and achieve the effects of less positioning error, good stability, and low optical noise.

An optical projection and measurement device technology, applied in the field of measurement, can solve the problems of large positioning error, long measurement optical path, and reduced measurement accuracy, and achieve the effects of less positioning error, good stability, and low optical noise.

CN1752714AInactive Publication Date: 2006-03-29WUHAN UNIV OF TECH
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  • Optical projection measurer for external diameter of large wheel diameter
  • Optical projection measurer for external diameter of large wheel diameter
  • Optical projection measurer for external diameter of large wheel diameter

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Embodiment Construction

[0014] The optical projection measurement device with large wheel diameter and outer diameter of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0015] Such as figure 1 and figure 2 The shown optical projection measurement device for the outer diameter of a large wheel has a mechanical positioning assembly 7 that can be positioned above a section of the circular arc tread of the measured geometrical revolving body 8, and the mechanical positioning assembly 7 can be used in the prior art Any structural form, as long as it can determine the chord length L of the circular arc tread of the measured geometrical revolving body 8 and the distance Ho from the chord to the reference plane of the mechanical positioning assembly 7. The mechanical positioning assembly 7 is fixed with an optical measuring head for projecting the circular arc tread profile of the measured geometric revolving body 8 f...

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Abstract

The present invention discloses a large wheel diameter outside diameter optical projection measuring equipment. It includes a mechanical positioning component and an optical measuring head mounted on the mechanical positioning component. Said optical measuring head is composed of back projection laser source, beam expander lens, optical slit component, imaging lens component, CCD camera and signal control processing device. It is applicable to diameter measurement of geometric revaling body whose wheel diameter is greater than 500mm, specially it is applicable to diameter measurement of geometric revolving body whose thread width is greater than 80 mm.

Description

technical field [0001] The invention belongs to the technical field of measurement, and relates to a measuring device for calculating the diameter of a circle based on the chord height method, in particular to an optical projection measuring device for the outer diameter of a large wheel. Background technique [0002] As a powerful tool for measuring diameter by projection imaging, optical diameter measuring device has been widely used in geometric shape measurement research. In recent years, a lot of research on this technology by scientific and technical personnel has always been based on the method of directly measuring the diameter. In the article "Double Beam Laser Scanning Dimension Measurement System" {see "Semiconductor Optoelectronics" 1998, 19(5): 320~323}, a typical diameter projection imaging measurement method and device are proposed, which is characterized in that the measured The geometrical body of revolution is installed on the frame of the measuring equipm...

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Application Information

Patent Timeline
29 Mar 2006
Publication
CN1752714A
IPC
G01B11/08
Inventors
卢红