ON THE SURFACE INSPECTION
❱ ❱ surfaceCONTROL detects and analyses local shape defects on surfaces that deviate by micrometres from their target measurements
SurfaceCONTROL from Micro-Epsilon is a 3D non- contact surface inspection system for defect detection and for inspecting the aesthetic appearance of non-reflecting surfaces. The system is based on the principles of
deflectometry and fringe projection, which enables even the smallest of surface defects to be recognised reliably. The sensor scans the surface and generates a 3D point cloud. This is subsequently evaluated using specially developed tools in order to recognise extremely small defects and discontinuities on the surface. Sensors with different measuring ranges, areas and resolutions are available to suit any application. The 3D sensor used in surfaceCONTROL
Alternatively, for detecting paintwork defects on car bodies, the reflectCONTROL system can be integrated with the robot instead. The robot continuously adjusts the position of the system to help complete measurements within a very short timeframe. The defects are measured laterally and in depth and classified to enable follow-up work and process improvements to be performed precisely as required and easily. The technology provides objective 100% inspection of all vehicles manufactured, and enables employees to concentrate on remedying critical defects rather than identifying them. Not only does the system reduce defects, it also means that where defects are detected, this happens immediately after the painting booth when they can still be easily reworked. This reduces costs and reduces the number of rework lines required. An increasing number of sensors are being integrated with robots because these systems can complete many tasks independently and travel distances are expected to be found dynamically, as the use of specified travel ranges is set to decrease over time.
❱ ❱ TOP: An increasing number of sensors are being integrated with robots because these systems can complete many tasks independently
❱ ❱ BOTTOM: Robot mounted inspection sensors can be used for inspecting highly reflective or partially reflective automotive surfaces
achieves significant inspection speeds together with high measurement accuracy using a fast projection unit and new cameras. Its modular design enables the system to be installed both as a fixed mount or robot-mounted system, a particular advantage for in-line inspections within the automotive industry, where it is used for inspecting internal vehicle components such as airbags, dashboard consoles and instrument panels. The use of the sensor on a robot arm also
eases the inspection task for larger surfaces. All six degrees of freedom of the robot are available and the complete inspection of large components using only one sensor is possible in this way. Micro-Epsilon has developed a mobile version
of surfaceCONTROL for use in roving inspection tasks by an auditor. The portable system, which comprises a laptop and a sensor mounted on a tripod, can be safely transported to its destination in a carrying case. The standard measuring surface for this system is around 410mm x 300mm.
DAQ, Sensors & Instrumentation Vol 2 No. 2 /// 3
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