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The new Werth Rotary Tilt (WRT) head enables fast, progressive positioning of the sensors. The probe's eccentric mounting means that rotary/tilt heads can also be used on small machines.
Some parts, such as thin sheet metal, must not be touched or moved, but are also too large and heavy for rotary axes. In such cases, a multi-sensor rotary/tilt head is required to measure from both sides. The new WRT can handle higher loads than conventional rotary/tilt heads, making it suitable for a wide range of sensors.
For example, it can be used on fixed-bridge coordinate measuring machines, or on the new VideoCheck S with up to three independent sensor axes.
The WRT allows measurements to be taken in any probing direction, both with conventional scanning probes and also, for example, with the Chromatic Focus Point optical distance sensor. The limiting angles for capturing light reflected from the workpiece surface, specified by the numerical aperture of the lens, and the resulting limitations on surface angularity, are eliminated. Combined measurements in several tilting positions make it possible, for example, to measure very steep flanks.
Greater precision and improved accessibility
In the case of the scanning probe, the eccentric probe mounting reduces the distance between the tilting axis and the stylus tip, thus shortening the tilting path when measuring complex workpieces. This improves accuracy, as measurement error along the length of the machine increases, mainly due to temperature.
A further advantage over conventional rotating/tilting heads is the infinitely variable range of rotation and tilt adjustment, which allows greater accessibility to the object and measuring element. The eccentric arrangement of the tilting axis also extends the usable measuring range.
Fuel cells are an example of an application: vertical installation of the bipolar plate allows measurement of wall thickness, mold center offset and weld center offset. Flow field geometry can be captured at half-plate level. Other fields of application include the measurement of cylinder head gaskets, turbine blades or dashboard glass.
