PARAMETERS SELECTION IN MULTIPOINT FORM MEASUREMENT

A. Cellary

Abstract

In the paper some ways of straightness and roundness measurements with multipoint methods are presented. They are based on workpiece surface measurement in limited number of regularly dislocated points and on reconstruction of an actual profile. For this purpose different interpolation methods can be applied: linear function, polynomial, trigonometric series, third order spline interpolation. The main point when using these methods is to choose a number of measuring points correctly. It depends on character of examined surface, applied interpolation method and acceptable measuring error. These methods can be used for coordination machines with touch trigger probe. Comparison tests were performed using a device for straightness and roundness referenceless measurements.

Keywords

straightness, roundness, CMM

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IMEKO-WC-2000-TC14-P359.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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