surfaceCONTROL is designed for the
inspection of diffuse surfaces such
as metallic surfaces (e.g. uncoated,
electroplated, EPD), plastic surfaces and
ceramics. The sensor, which is based on
the fringe projection principle, scans the
surface and generates a 3D point cloud.
This point cloud 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.
DIGITAL STONE
surfaceCONTROL scans the surface of the
car body components with a 3D sensor in
a few seconds and offers the detection and
evaluation of local defects. A digital stone,
for example, is used for the analysis.
This block is moved over the 3D-data of the
surface like a physical block. The length and
direction of the block is adjusted according
to the shape of the surface. The result is the
DefectMap – a graphical representation of
the defect with precise information about
the height and depth. The determined
values can be used for an automatic ‘OK/
NOK’ quality control decision.
surfaceCONTROL comprises a 3D smart
sensor and two optional software packages.
The new 3D sensor achieves significantly
higher inspection speeds, together with
increased measurement accuracy by using
a fast projection unit and new cameras.
The modular design of surfaceCONTROL
enables the system to be installed both
offline (fixed mount) and as an in-process
inspection (robot-mounted) system.
The technology is already being used by
automotive companies to inspect internal
vehicle components such as airbags,
dashboard consoles and instrument panels.
The sensors are available for measurement
areas of 290 x 210mm2 up to 570 x
430mm2. The sensors detect a surface
within typically 0.5 seconds per
measurement area. The achievable lateral
resolution is between 0.25mm for small
areas and 0.5mm for the largest area. This
means that surface deviations from 5µm
in height can be detected reliably. The
depth of the measurement area of between
150mm and 300mm also enables reliable
detection of zones with a strong curvature.
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