3D inspection and measurement in new quality

With the Volume Section Sensor, Werth contour image processing has been able to be used in any sectional plane of CT volumes for several years. This allows reliable detection of material transitions, especially for workpieces made of several materials. It is also possible to filter images and capture contours at material transitions with subvoxel accuracy. The measured contours consist of many contiguous points. The information about the proximity of the points to each other is retained and can subsequently be used when applying proven contour filters.
In addition to planar volume sections, cylindrical volume sections are now also possible. The base area of the cylinder is not limited to circles and can take on any mold. The specification of the cutting cylinder is defined by a cutting contour of the base surface, its height and orientation. The contours required for this can be determined, for example, by measurement with patch selection, segmentation or using a CAD model. The size of the base surface can be subsequently adjusted. The result is both a 3D view of the cut surface and the unrolled 2D surface of the cutting cylinder.
Like all measurement methods at Werth, the new process is fully integrated into the WinWerth® measurement software and can also be used in automated series measurements. One application example is the thread measurement of bottle caps to determine lead angles and distances. Free-form cross sections through water pump housings, for example, enable the inspection of weld seams, gap dimensions and the fit of seals.