Patent ID: 6708128
Filing Date: 2004-03-16
Classification: G01N

Abstract:
A device for indicating a function deviation of one or more details of manufacturing equipment using frequency component analysis for analyzing deviations between a nominal product shape and an actual product shape of a product using surface data of a physical surface describing the actual product shape, the product having been processed by the manufacturing equipment, the analysis being based on the surface data and a set of function deviation indicating frequencies corresponding to frequencies at which function deviations occur in the one or more details, the function deviation indicating frequencies being comprised in a frequency map, the device comprising:an input connection; a memory comprising the frequency map; an indicator; and computational means for receiving the surface data via the input connection, performing a Fourier transformation of the surface data, and indicating, using the indicator, a correspondence between frequency components of the surface data and the function deviation indicating frequencies of the frequency map.