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Indexed by:会议论文

Date of Publication:2017-01-01

Included Journals:CPCI-S

Volume:120

Page Number:607-614

Key Words:Phase transfer; lndexing error; Pitch deviation; Gear grinding Technology

Abstract:In order to improve the pitch machining accuracy of gear artefacts, based on the extraction method of the systematic indexing error (SIE), the phase-transfer gear-grinding technique (PGT) was proposed by taking the SIE curve interfere with its phase-transfer error curve. First, the SIE curve of the gear grinding machine (GGM) was precisely extracted by adopting the 36 polygon mirror which was precisely calibrated by using the closure measurement method and the autocollimator, and the maximum indexing error is obtained as 6.82". Then the characteristics and the phase-transfer strategies to eliminate the main harmonic component of the SIE curve of the GGM was analysed. Finally, precision grinding experiments were carried out by adopting the traditional gear-grinding technique (TGT) and the PGT. The experiments show that, the total cumulative pitch deviation of gear specimen is obtained as 2.57 mu m by adopting the TGT, and the relative error is increased approximately by 24% comparing with the SIE. However, the total cumulative pitch deviation of gear specimen is obtained as 1.34 mu m by adopting the PGT, and the relative error is reduced approximately by 36% comparing with the SIE. The results show that the pitch machining accuracy of the gear specimen is significantly improved and is higher than the indexing accuracy of the GGM by adopting PGT, and the pitch deviations of the gear specimen achieve the highest class of the current gear standards. The researches have important guiding significance for the development of ultra-precision indexing components, including gear artefacts, indexing plates, end-tooth plates, indexing worm gears, the harmonic gears and so on.