Abstract
The influence of the gear eccentricity is investigated under no load. In actual gear pairs, it is common that tooth flanks are modified. In addition to tooth flank topographies, pitch deviations, especially cumulative ones, often occur because of careless setup in manufacturing process. Transmission errors including radial eccentricities and cumulative pitch deviations of a pair of spur gear are measured. The amount of eccentricities and phase difference of gear pairs is also identified by independent measurement. Cumulative pitch deviations are converted to the additional eccentricity and added to measured parameters of eccentricity as vectors. It is clarified that the conversion of cumulative pitch deviations into gear eccentricity successfully performed and the idea of the composite vector of eccentricity is verified accurately with measured and simulated results.
