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Application of Non-contact Measurement Technology to Precision Parts

Article of Honda R&D Technical Review Vol.17 No.2

Summary

A non-contact measurement system has been used for the precision analysis of parts in 3D shape evaluation employing CAD data. In recent years, there have been attempts to utilize non-contact measurement systems to respond to demands for 3D shape evaluations of precision parts such as gears. However, there are various optical issues with conventional optical non-contact measurement systems. These issues had to be addressed for application to precision parts, necessitating the development of a new measurement system.
The sensor testing were conducted using a variety of optical sensors to clarify the specific issues arising in the measurement of precision parts with non-contact measurement systems, enabling the optimum optical sensors to be selected. The newly developed system employs two sensors, which enables the achievement of the level of accuracy required for 3D shape evaluation of parts. A multi-axis mechanism which compensates for the weak points of the optical sensors completes the new system.
This paper will demonstrate examples of the use of data measured by the developed measurement system.

Reference

(1) http://www.ophirjapan.co.jp/
(2) Ishihara, M.: Surface topography measurement using a non-scanning multiple-beam confocal microscope, 28th Meeting on Lightwave Sensing Technology, p. 21-28, (2001)
(3) Yoshizawa, T.: Three-dimensional measurement by pattern projection, Optical three-dimensional measurement, New technology communications Co., Ltd., p. 77-99, (1998)

Author (organization or company)

Shigeru TAKAMURA(Tochigi R&D Center)

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