CONCEPT OF REFERENCE MEASUREMENTS OF CYLINDRICITYPROFILES OF MACHINE PARTS

摘要

Products with cylindrical surfaces arernmanufactured in many (e.g. paper, chemical, steel, heatingrnor shipping) industries. It is required that regular estimationsrnof cylindricity profiles be made during the productionrnprocess. The reference methods can be used forrnmeasurement of cylindricity. The cylindricity deviationrnincludes the roundness deviation in different cross-sectionsrnof an object, the relative change of its diameter and the noncentricityrnof profiles in relation to the nominal axis of thernobject. The reference measurement systems appliedrnnowadays enable measurement of roundness profiles inrnrelation to fixed points of support in different cross-sectionsrnof the measured object. Furthermore, it is possible tornevaluate the relative difference of the diameters. However,rnin traditional reference measurement systems there is nornpossibility of measurement of the non-concentricity ofrnprofiles. That is why appropriate reference systems forrnmeasurement of cylindricity have had to be developed..