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Proceedings Paper

Structured lighting non-contact 3D measurement machines and applications in casting parts inspection
Author(s): Yong Li; Teruaki Yogo
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Paper Abstract

In order to reduce the scrap cost in engine block castings, a machine equipped with a structured lighting 3D sensor has been introduced. The optical 3D sensor is able to digitize a 120×150 mm area of a casting into up to 1 million points in just few seconds. By mounting this optical 3D sensor onto a special horizontal arm CMM, with 3-translation and 2-rotation axes, along with a conventional touch probe, an engine block casting can be digitized into a huge point cloud data in about 40 minutes. There is no need for merging different measurement patches together and the alignment between the point cloud data of a casting with its CAD model is set up automatically. The measured point cloud data can be compared with its CAD model to generate a color-coded deviation map in about 3 minutes. This provides a new and efficient tool to control the dimensional repeatability of engine block castings and to reduce scrap cost.

Paper Details

Date Published:
PDF: 7 pages
Proc. SPIE 6000, Two- and Three-Dimensional Methods for Inspection and Metrology III, 60000N; doi: 10.1117/12.630595
Show Author Affiliations
Yong Li, MiiC America, Inc. (United States)
Teruaki Yogo, Opton Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 6000:
Two- and Three-Dimensional Methods for Inspection and Metrology III
Kevin G. Harding, Editor(s)

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