MICRO METROLOGY | CASE STUDY


<< Figure 2:Te XTR sensor features an integrated rotary axis. It enables the stylus system to also be positioned at the


right angle to the part and reach practically every location awithout sacrificing accuracy — even on complex geometries. Te picture shows Martin Degelmann, measuring technician at KWS Kölle. >>


One other criterion played a key role: "We looked at ease of use and this is where we ran into considerable differences among the providers," stated Hübner. Because the quantities at KWS are very small with between one and 10 items for each product, the work needed to create the measuring programs was anything but negligible. After extensive considerations, KWS opted for the ACCURA bridge-type measuring machine from ZEISS with a measuring range of 1200 x 901 x 900 mm.


New scanning probe for complex geometries The ZEISS ACCURA coordinate measuring machine measures with accuracy of 1.6+L/333 µm at room temperatures between 20-26 degrees Celsius as long as the temperature remains constant. The measuring range also provides room for larger tools. A special feature: as a pilot customer, KWS selected a new scanning probe for the measuring machine. ZEISS ACCURA measuring machines are usually equipped with a scanning probe that can measure the features and contours not only point-by-point, but also continuously. However, the XTR sensor features an integrated rotary axis. It enables the stylus system to turn as far as possible in 15 degree increments and thus always be positioned at the right angle to the part. It reaches practically every location even with complex workpiece geometries — without sacrificing accuracy.


28 | commercial micro manufacturing international Vol 7 No.4


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