Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Experimental Study for the Durability Enhancement of Plastic Spur Gear

플라스틱스퍼기어의 내구성향상에 관한 실험연구

  • 김충현 (한국과학기술연구원 트라이볼로지연구센터) ;
  • 안효석 (한국과학기술연구원 트라이볼로지연구센터) ;
  • 정태형
  • Published : 2002.09.01
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Abstract

Operating test of power-transmission plastic spur gears were performed inspecting both characteristics of friction-wear and endurance, and suggesting endurance improvement method that either drills internal holes of tooth or inserts metallic pin in the internal hole of tooth and verifying this newly-provided method. In case of acetal gears, amount of friction-wear is observed to increase by development of plastic deformation and increase of tooth stiffness due to brittle material property of acetal. To the contrary, in case of nylon gears, suggested method is shown to drop down the tooth temperature for about 3∼10$^{\circ}C$ than original gear, thus amount of wear is reduced by over 30% and operating lift prolonged by more than 200%. Hence, suggested method is proved to be practically applicable to the plastic gears made by soft polymers such as Nylon.

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References

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