Abstract: The article deals with the method of cylindricity measurements using V-blocks. It was assumed, as was in the case of roundness profile measurements before, that the V-block method can be applied to accurate cylindricity measurements of large machine parts directly on a machine tool or a work stand. Results of the statistical verification of the method show that its maximum error equals about 19% in relation to accurate radial method (for the confidence level P=0.95). The next stage of the research work on the V-block cylindricity measurements was an analysis of potential sources of errors. These sources were divided into two groups: sources independent of the method parameters and sources strictly related to the method parameters. Authors investigated potential sources of errors and developed procedures allowing compensation of influence of most significant ones. The paper provides results of the theoretical and experimental research on an analysis and compensation of main sources of errors of the V-block method of cylindricity measurements.
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