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Contact strength analysis of circular-arc-tooth-trace cylindrical gear

Abstract

According to Hertz contact theory, this paper derived the checking formula for contact strength of the circular-arc-tooth-trace cylindrical gear (C-gear) train. The contact strength calculation formula is particularly considering the effect of radius of tooth trace and position angle. The contrast analysis of contact strength between the C-gear, spur gear and helical gear was investigated by computer simulation. The results reveal that the C-gear may be better than spur gear and helical gear in the contact strength. Moreover, decreasing the ratio between radius of tooth trace and tooth width and increasing contact ratio can contribute to improving the contact strength of the C-gear. In this paper, the checking formula of contact strength and the research methods can provide basis for the design of this kind of gear transmission.

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Acknowledgments

This project is supported by National Natural Science Foundation of China (Grant No. 51375320). The authors would like to acknowledge the financial support.

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Correspondence to Sun Zhijun.

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Technical Editor: Lavinia Maria Sanabio Alves Borges.

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Zhijun, S., Li, H., Jinge, W. et al. Contact strength analysis of circular-arc-tooth-trace cylindrical gear. J Braz. Soc. Mech. Sci. Eng. 38, 999–1005 (2016). https://doi.org/10.1007/s40430-014-0272-6

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Keywords

  • C-gear train
  • Hertz contact theory
  • Contact strength
  • Radius of tooth trace