MEASURING THE OUTER CONTOUR USING LIGHT-SECTION
At contour measurement, light-section sensors can show their full performance. It is possible for all feed rates. The complete surface can be recorded and measured. Depending on constellation, besides diameter, ovality and contour also welding seams and surface faults can be detected.
A camera detects a laser line emitted by the sensor. The laser line plane is perpendicular to the transport direction of the object to be measured.
If a measuring object crosses the plane, the laser line follows its surface contour. Thus, the camera records the surface profile in her detection area. To cover the whole surface and diameter, several sensors need to be placed around the object.