한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제26권5호
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  • Pages.135-141
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  • 2009
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

공작기계용 볼 베어링의 억지끼워맞춤과 내부틈새변화에 관한 해석적 연구

FE-analysis of Shrink Fits and Internal Clearance for Ball Bearing of Machine Tool

  • 김웅 (창원대학교 기계설계공학과) ;
  • 이춘만 (창원대학교 메카트로닉스공학부) ;
  • 황영국 (창원대학교 기계설계공학과)
  • 발행 : 2009.05.01
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초록

The bearing clearance is influenced by shrink fit and thermal expansion during operation. The designer must take into account the reduction of clearance after installation to the interference fits, and thermal expansion must be considered. The purpose of this study is to grasp the internal clearance variation and behavior of a bearing which is a deep connected with fatigue life of bearing and performance of spindle through FEM(Finite Element Method). Finite element analysis is performed by using commercial code ANSYS according to variation of thermal condition and rotational speeds. This paper presents correct negative internal clearance according to temperature during operation. Furthermore, interrelation between thermal expansion and contraction are presented to maintain adequate contact force for three type of spindle system (HSK-A60, HSK-40E, HSK-32E). The influence of the centrifugal force and Internal clearance variation of bearing is studied to operating rotational speed.

키워드

참고문헌

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