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Proceedings Paper

In-process inspection of internal threads of machined automotive parts
Author(s): Hongwei Zhang; Reuven Katz; John S. Agapiou
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Paper Abstract

This paper presents a methodology for the non-contact inspection of geometric features of internal threads in machined automotive parts. The method enables in-process internal thread quality verification using a high-precision laser sensor. It allows extracting thread pitch, major and minor diameters, thread height and even allows finding the angular location of the starting point of a thread with respect to a reference point on the perimeter. An in-process thread inspection prototype possessing five axes of motion is presented to demonstrate the capabilities of this method. The validation of this method and the self-calibration approach for system alignment were tested on several internal threads showing a high degree of repeatability.

Paper Details

Date Published: 10 September 2009
PDF: 9 pages
Proc. SPIE 7432, Optical Inspection and Metrology for Non-Optics Industries, 74320D (10 September 2009); doi: 10.1117/12.824387
Show Author Affiliations
Hongwei Zhang, Univ. of Michigan (United States)
Reuven Katz, Univ. of Michigan (United States)
John S. Agapiou, General Motors Corp. (United States)

Published in SPIE Proceedings Vol. 7432:
Optical Inspection and Metrology for Non-Optics Industries
Peisen S. Huang; Toru Yoshizawa; Kevin G. Harding, Editor(s)

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