Cam and crank shaft measurement
As with gear or roundness measurements, it is possible to apply general metrology methods to cam and crank shafts, but in practice special purpose instruments give greater speed, and often greater accuracy too. Special instruments are made by Adcole,...
Helical gear measurement using...
For gear measurements during their manufacturing processes, the fringe projection techniques offers several advantages in comparison to the conventional tactile measuring devices. A surface area can be registered by one measuring sequence. The 3D geo...
Inter-comparison on free form...
An artefact and a method to carry out intercomparisons on CMMs have been developed by Applus+ Metrology. Their short name is CMM_DAT, abbreviation from Coordinate Measuring Machines Data Acquisition Test. The physical artefact consists of two double ...
Medicine group State-Of-The-Art report
This report presents a non-exhaustive review of the use of optical techniques for geometry measurements in the medical field. Applications range from ophthalmology, to dermatology, and orthopaedics. Included also are sections on functional tissue ima...
Surface Characterization of optical...
Surface roughness in the nanometric range represents one of the key properties of high quality optical elements (lenses, mirrors, replication tools and molds). Besides the roughness local defects (scratches, abrasions, pits, cracks and chips) influen...