IJAT Vol.5 No.2 pp. 132-137
doi: 10.20965/ijat.2011.p0132


Evaluation of Pitch Deviations with Comprehensive Representation Suitable for Engagement Evaluation in Different Types of Gears

Syuhei Kurokawa, Yasutsune Ariura, and Toshiro Doi

Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

December 2, 2010
December 22, 2010
March 5, 2011
gear metrology, pitch deviation, comprehensive representation, engagement evaluation
Gear tooth flank deviations should be characterized to evaluate individual gear accuracy directly linked to gear performance during engagement. The comprehensive pitch deviation representation we propose is calculated using multiple tooth flank surface deviations as 0-order form deviations. In this representation, pitch error is expressed by angle unit, not by length unit, and calculated from measured conventional deviation (profiles and leads) withoutmeasuring pitch deviation. For spur and helical gears, pitch deviation is expressed by a single length unit and also by a single angle unit. On the other hand, for bevel gear flank, pitch deviation expressed by length unit consists of many different values even on a single flank. Using the angle unit expression, form deviation is described exactly by a single parameter. The comprehensive representation we propose overcomes the disadvantages of conventional pitch deviation evaluation, going right to the point of gear engagement evaluation.
Cite this article as:
S. Kurokawa, Y. Ariura, and T. Doi, “Evaluation of Pitch Deviations with Comprehensive Representation Suitable for Engagement Evaluation in Different Types of Gears,” Int. J. Automation Technol., Vol.5 No.2, pp. 132-137, 2011.
Data files:
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  2. [2] ISO, “Cylindrical gears – Code of inspection practice – Part 1: Inspection of corresponding flanks of gear teeth,” ISO/TR-10064-1, 1992.
  3. [3] G. Goch, “Gear Metrology,” Annals of the CIRP, Vol.52, No.2, pp. 1-37, 2003.
  4. [4] T. Pfeifer, S. Kurokawa, and S. Meyer, “Derivation of parameters of global form deviations for 3-dimensional surfaces in actual manufacturing processes,” Measurement, Vol.29, pp. 179-200, 2001.
  5. [5] M.Weck, O. Guzman, and P.W. Gold, “Measuring the flank geometry of bevel gears on a multiple-coordinate measuring machine,” Precision Engineering, Vol.2, Issue 2, pp. 85-88, 1980.

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