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

The Korean Society of Mechanical Engineers (대한기계학회)
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Computational Analysis of Bearing Screw Used in Lead Screw

리드스크루에 사용되는 베어링 스크루의 전산내구해석

  • Kim, Min-Gun (Dept. of Mechanical and Biomedical Engineering, Kangwon Nat'l Univ.) ;
  • Cho, Seok-Swoo (Dept. of Vehicle Engineering, Kangwon Nat'l Univ.) ;
  • Kim, Dong-Youl (Dept. of Mechatronics Engineering, Kangwon Nat'l Univ.) ;
  • Kim, Yo-Seb (Dept. of Mechanical and Biomedical Engineering, Kangwon Nat'l Univ.)
  • 김민건 (강원대학교 기계의용공학과) ;
  • 조석수 (강원대학교 자동차공학과) ;
  • 김동열 (강원대학교 메카트로닉스공학과) ;
  • 김요셉 (강원대학교 대학원 기계의용공학과)
  • Received : 2011.06.21
  • Accepted : 2011.10.10
  • Published : 2011.12.01
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Abstract

In order to assess the stiffness of bearing screw used for lead screw, finite element analysis on stress and fatigue life of bearing screw has been performed. Based on these analysis, fatigue life dominant model of bearing screw was proposed. This improved model introduces a fillet to release the concentrated stress generated in the vicinity of bearing screw hole. This paper also considered the strength suitability when the bearing screw manufactured in W company was applied to X-ray CT.

리드스크루에 사용되는 베어링 스크루의 강성을 평가하기 위해서, 먼저 베어링의 응력과 피로수명의 유한요소해석을 수행하였다. 해석결과의 값을 바탕으로 베어링 스크루의 피로수명이 향상된 모델을 제안하였다. 이 개선된 모델은 베어링 스크루 응력집중부의 응력을 분산시키기 위한 필릿을 도입한 것이다. 또한, W사에서 제작된 베어링 스크루가 단층촬영기에 사용되었을 때 강도측면에서의 적합성 여부를 검토하였다.

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References

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