Product category:
Non-contact, Optical and Laser
News Release from: Armstrong Optical | Subject: Auto windscreens
Edited by the Manufacturingtalk Editorial
Team on 04 November 2005
Production method measures windscreens
When a major European automotive industry supplier needed a production line method to measure the dimensions of windscreen glass they turned to STIL S A of France and Armstrong Optical.
When a major European automotive industry supplier needed a production line method to measure the dimensions of windscreen glass they turned to STIL S A of France and their UK representative Armstrong Optical The need arose from a problem with non-uniform windscreens causing optical aberrations when the vehicle driver viewed the outside world
This article was originally published on Manufacturingtalk on 6 Dec 2004 at 8.00am (UK)
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The dimensions in question were the overall thickness of the glass/plastic laminate, the thickness of the two glass layers and the interstitial plastic layer - a problem that in the past had been difficult to solve.
A robot-mounted non-contact sensor system was able to automatically detect the air-glass and glass-plastic interfaces and provide a real-time assessment of windscreen thickness providing a solution that was easy to transfer to the production line.
The sensor system was a CHR450 from STIL S A used in conjunction with a 1mm depth of field chromatic optical 'pen' - this gave overall thickness resolution of better than 0.03microns - an order of magnitude better than was required.
The CHR450 system has also been used for other production-line measurement problems.
For instance on-line determination of bottle thickness in several places on the bottle, layer thickness evaluation in hologram production, measurement of cylinder roughness and shape in automotive engines.
'Such a sensor solution is not only elegant and extremely cost-effective, but also, since it is non-contact, is relatively easy to integrate into production environments' stated a spokesperson for Armstrong Optical .
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