This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
SCALE Optical Hole Probe - The Next Step to Save Time and Cost in Auto Fastening with the Help of Optical Measurement Technology
Technical Paper
2015-01-2618
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
SCALE is a modular, non-contact, in-line measurement system. It measures the diameter of the countersink directly after the drilling, the amount and distribution of sealant in the open hole, and the head height of the fastener as well as pressed out sealant (cf. Figure 1). The system is fast and reliable and the out coming information is reliable and trustworthy.
Until now the system could not measure the inner diameter of the hole. The reason for this is that it is not possible to detect the inner diameter with a camera that looks only at the top of the component.
But as our customers make the request to us, we decided to develop an optical hole probe system which is fully integrated in the auto fastening process. We think that a mechanical system cannot fulfill the customer expectations in terms of reliability, low maintenance, precision and speed. Only a non-contact system can measure permanently safe and fast the inner diameter of holes. The development objective was to create a system that is capable of to measure one inner diameter in less than 200 milliseconds with the precision better than 10 microns (0.0004 inch) at six sigma confidence level.
The paper starts with a short description of different non-contact sensor types that are available on the market and that can be used to measure the inner diameter of a drilled hole in an auto fastening machine. The main part of the paper reports the results of our intensive investigation regarding the applicability for fast and non-contact optical measurement of the inner wall of the drilled hole. We have done more than 30.000 measurements in carbon fiber and metal.
Recommended Content
Citation
Wolf, B. and Meiners, C., "SCALE Optical Hole Probe - The Next Step to Save Time and Cost in Auto Fastening with the Help of Optical Measurement Technology," SAE Technical Paper 2015-01-2618, 2015, https://doi.org/10.4271/2015-01-2618.Also In
References
- ISIS sentronics Presse-Mitteilung CONTROL 2009 - ISIS sentronics stellt erstmals revolutionären i-Dex vor 2009 Germany
- Malacara , D. Optical Shop Testing Third Wiley
- Izumiya , S. and Takeuchi , N. New Special Curves and Developable Surfaces Turk J Math 28 2004 153 163
- Micro-Epsilon boreCONTROL Non-contact internal wall inspection Data sheet boreCONTROL http://www.microepsilon.com/download/products/dat--boreCONTROL--en.pdf
- Umbach , D. and Jones , K. N. A Few Methods for Fitting Circles to Data IEE Transactions on Instrumentation and Measurement 52 2003 1181 1885
- Chernov N. Linear Regression - Fitting Circles and lines by Least Squares 2010 CRC Press
- Thomas Pyzdek , and Keller Paul A. 2009 The Six Sigma Handbook Third New York, NY McGraw-Hill