Journal of Failure Analysis and Prevention

, Volume 15, Issue 4, pp 486–490 | Cite as

Investigation on the Looseness of the Worm Connected to the Motor Shaft in a Speed Reducer

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Abstract

This article aims at identifying the possible cause of the detachment between a worm and its coupled motor shaft. Investigation includes several characterization techniques such as visual observation, mechanical testing and metallographic examinations. Reasons of the failure are identified as design errors. Design parameters and manufacturing process of worm and motor shaft need to be modified and optimized.

Keywords

Worm Motor shaft Looseness Speed reducer 

Notes

Acknowledgment

The author thanks the support provided by Hangzhou Ignite Auto Electronic Technology Co., Ltd and Baosteel Engineering and Technology Group Co., Ltd.

References

  1. 1.
    M.-W. Park, J.-H. Jeong, J.-H. Ryu, H.-W. Lee, N.-G. Park, Development of speed reducer with planocentric involute gearing mechanism. J. Mech. Sci. Technol. 21, 1172–1177 (2007)CrossRefGoogle Scholar
  2. 2.
    Z. Jiaxing, K. Ilie, Static shear strength calculation of plastic helical gears mating with steel worm. Int. J. Precis. Eng. Manuf. 15, 235–239 (2014)CrossRefGoogle Scholar
  3. 3.
    J. JianPing, M. Guang, Investigation on the failure of the gear shaft connected to extruder. Eng. Fail. Anal. 15, 420–429 (2008)CrossRefGoogle Scholar
  4. 4.
    H. Kawamura, T. Sawa, M. Yoneno, T. Nakamura, Effect of fitted position on stress distribution and strength of a bonded shrink fitted joint subjected to torsion. Int. J. Adhes. Adhes. 20, 131–140 (2003)CrossRefGoogle Scholar
  5. 5.
    G. Romanos, Strength evaluation of axisymmetric bonded joints using anaerobic adhesive. Mater. Prod. Technol. 14, 430–443 (1999)CrossRefGoogle Scholar
  6. 6.
    T. Sekercioglu, A. Gulsoz, H. Rende, The effects of bonding clearance and interference fit on the strength of adhesively bonded cylindrical components. Mater. Des. 26, 352–357 (2005)CrossRefGoogle Scholar
  7. 7.
    K. Johnson, Contact mechanics (Cambridge University Press, Cambridge, 1985), pp. 101–123CrossRefGoogle Scholar
  8. 8.
    D. Croccolo, M. De Agostinis, N. Vincenzi, Static and dynamic strength evaluation of interference fit and adhesively bonded cylindrical joints. Int. J. Adhes. Adhes. 30, 359–366 (2010)CrossRefGoogle Scholar
  9. 9.
    GmbH RB, Bosch Automotive Handbook, 8th edn. (Bentley Publishers Press, Cambridge, 2011), pp. 305–349Google Scholar
  10. 10.
    R.W. Fuller, J.Q. Ehrgott Jr, W.F. Heard, S.D. Robert, R.D. Stinson, K. Solanki, M.F. Horstemeyer, Failure analysis of AISI 304 stainless steel shaft. Eng. Fail. Anal. 15, 835–846 (2008)CrossRefGoogle Scholar

Copyright information

© ASM International 2015

Authors and Affiliations

  • Jiaxing Zhan
    • 1
  • Yinuo Yan
    • 2
  • Jianli Qi
    • 3
  • Mohammad Fard
    • 1
  1. 1.School of Aerospace, Mechanical and Manufacturing EngineeringRMIT UniversityMelbourneAustralia
  2. 2.Baosteel Engineering and Technology Group Co., LtdShanghaiPeople’s Republic of China
  3. 3.Hangzhou Ignite Auto Electronic Technology Co., LtdHangzhouPeople’s Republic of China

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