On Line Measuring in Complex PM Parts By Conoscopic Holography  (439KB)
Nestor Martinez, Cesar Fraga, Ignacio Alvarez and Jorge Marina
Euro PM 2003 Conference, Valencia

The rapidly evolution in the concept of verification and measuring methods toward the features for serial parts, as well as the increasing demand for tighter geometrical tolerances and shape defects, has addressed Sinterstahl Asturias, in co-operation with Korvus Tecnología y Desarrollo and Oviedo University, to develop a measuring method and system that meets the new requirements. A novel automatic on-line measuring device based on a non-contact measurement technology called conoscopic holography is shown in the paper. This non-contact method allows on line measuring of complex sintered parts in a precise, fast, robust, flexible and economic way. Obtained data are used to define the external contours, maximum and minimum of a particular feature shape defects, tooth profile among other things. Furthermore the database can be used for analysing in depth metrological aspects under the statistical tolerancing point of view, in order to deal with the intrinsic non-normality and their effects..