Analiza błędu pomiaru odchyłki położenia osi spowodowanego wynikającą z tej odchyłki mimośrodowością przemieszczania się środka mierzonego zarysu okrągłości

摘要

In the paper there is presented analysis of the error measurement of the position axis deviation of machine elements based in prisms caused by eccentricity deviations of mutually movement of the based in prisms elements cylindrical surfaces. Basing on the support scheme assumed for theoretical consideration, the mathematical relationships describing changes of the investigated measurement error value as a function of the measured object rotation angle were derived. When determining the measured error values, there was also taken into account possibility of influencing the measurement results by an additional eccentricity caused by the error of the measuring sensor position in relation to the rotation axis realised by the measurement system. The analysis results showed a very small impact of the considered error on the described geometrical deviation values on condition that the eccentricity caused by the error of the measuring sensor position was eliminated before. The analysis results also confirmed usefulness of the referencing methods used for complex measurements of the geometrical state of large cylindrical mechanical elements such as crankshafts or distribution shafts which are often placed in prism during measurements.