Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Contact Fatigue Strength Design of a Slewing Bearing Based on i-PGS

i-PGS 기반 선회베어링의 접촉피로강도 설계

  • Kwon, Soon-man (School of Mechanical Engineering, Changwon National University) ;
  • Shin, Heung Chul (School of Mechanical Engineering, Changwon National University)
  • Received : 2015.12.01
  • Accepted : 2016.01.18
  • Published : 2016.02.15
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Abstract

To overcome the large ring gear manufacturing problems seen in slewing bearings and girth gears, pin gear drive units have been developed. Among them, a novel slewing bearing with an internal pinwheel gear set (i-PGS) is introduced in this paper. First, we consider the exact cam pinion profile of i-PGS with the introduction of a profile shift coefficient. Furthermore, a new root relief profile modification for the i-PGS cam pinion is presented. Then, the contact stresses are investigated to determine the characteristics of the surface fatigue by varying the shape design parameters. The results show that the contact stresses of i-PGS can be reduced significantly by increasing the profile shift coefficient. In addition, the contact ratio, a measure of teeth overlapping action, decreases with the decrease of the allowable pressure angle.

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References

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