P8.7 - Automatic Painted Surface Inspection and Defect Detection
- Event
- SENSOR+TEST Conferences 2011
2011-06-07 - 2011-06-09
Nürnberg - Band
- Proceedings SENSOR 2011
- Chapter
- P8 - Mechanical
- Author(s)
- H. Loferer - MICRO-EPSILON Messtechnik GmbH & Co. KG, Ortenburg (Germany)
- Pages
- 871 - 873
- DOI
- 10.5162/sensor11/sp8.7
- ISBN
- 978-3-9810993-9-3
- Price
- free
Abstract
Buying a new car is a highly emotional act: a potential buyer will only spend a significant amount of money if he firmly believes in the value of the product under consideration. In this respect, the external appearance of a vehicle is of outmost importance. In order to avoid aggravating customers with ungainly defects in the otherwise perfect paint, special light tunnels are used to generate lighting conditions that facilitate detection of defects down to a few tenths of mm in diameter. But even with all the technical aids, the visual inspection is never very reliable.
The German sensor specialist Micro-Epsilon solves this problem with their revolutionary “reflectCONTROL”. Here, the visual inspection is replaced by a reliable and reproducible automated inspection working in a similar manner to what happens in a light tunnel: Based on the principle of deflectometry, the surface of the vehicle is used as a mirror. Defects cause distortions in the mirrored images that are automatically detected and classified.
By reliably finding defects right after the paint booth, reflectCONTROL significantly reduces the number of defects that pass into subsequent process steps. With costs for removing defects increasing almost exponentially with every process step, reflectCONTROL offers a savings potential of millions of Euros per year.