Disc brake vision inspection system
25 Oct 2013
The Knorr-Bremse manufacturing facility produces 1,200 different brake types for use in commercial vehicles, ranging from 6-ton to 44-ton trucks, buses and towing vehicles through to the trailer sector. The inspection system allows inspection of 64 different characteristics.
The disc brakes leave production mounted on a workpiece carrier and are checked with great precision in a dedicated inspection area. The entire measurement process including laser triangulation, pattern recognition, colour recognition and measurement of components is carried out within milliseconds to determine whether the brake is correctly mounted according to the specified parts list and assembly guidelines held in the database. If a defect is detected, the database contains information as to whether it can be eliminated by reworking.
The system utilises three AVT cameras equipped with Schneider Kreuznach lenses and two line lasers from Z-Laser. The automated inspection is carried out using Sherlock image processing software from Teledyne DALSA. A Neupro- Sherlock plugin for Oracle transfers the data to the database. Both image data and inspection data are archived in the database and then transferred to a higher-level control.
The individual inspection algorithms are global and are recalled via the database using the part number of the particular brake assembly. In addition, it is possible to statistically evaluate the measurement data stored in the database and to perform a statistical approximation within the predefined threshold values.
For 25 years, Allied Vision has been helping people to be faster, more precise, and more efficient in whatever matters to them. From raising production standards to detect diseases faster, proving scientific theories true, monitoring traffic intelligently or simply knowing who crossed the finish line first – with their technology and expertise, Allied Vision helps customers to gain insight by seeing more and hence be more successful in what they do.
Bad Kreuznach, Germany
Jos. Schneider Optische Werke GmbH is a worldwide recognised manufacturer of high-performance lenses and filters as well as optical and mechanical components for industrial applications. The parent company is located in Bad Kreuznach/Germany with subsidiaries in Germany, Asia and the US.
STEMMER IMAGING has been leading the machine vision market since 1987. It is Europe's largest technology provider in this field. In 1997 STEMMER IMAGING presented Common Vision Blox (CVB), a powerful programming library for fast and reliable development and implementation of vision solutions, which has been deployed successfully throughout the world in more than 40,000 imaging applications in various industries.
Teledyne DALSA is one of the largest companies serving the machine vision industry and is unique in that it is vertically integrated; from sensor design and manufacture, through image capture and processing, to software for imaging optimisations and analysis.
Since being founded in 1985, Z-Laser has been an innovative manufacturer of intelligent laser technologies in the fields of metrology, industrial machine vision, positioning, and medical technology.
- Focusable optics: single line, Powell lens
- Compact and robust housing
- Different output levels and aperture angles available
- Compact precision lenses with colour correction in the visible range
- Ideally suited for colour cameras and measuring applications
- Focal lengths from 10mm
- Digital cameras with CCD or CMOS sensors
- Monochrome or colour models available
- Resolutions from 0.3 Megapixel (VGA) up to 12 Megapixel
- Gigabit Ethernet interface
- Advanced, yet simple application development software for rapid solutions
- High inspection speeds with excellent flexibility
- For inspection, measurement and 100% monitoring