단슬롯 너트의 형상이 풀림방지 성능에 미치는 영향
Abstract
In this study, the effect of a single-slot nut’s shape on the anti-loosening performance was investigated. The tightening characteristics of the single-slot nut were analytically estimated. Nonlinear finite element analyses were subsequently conducted for determining the tightening torque corresponding to various values of the slot depth, upper height, and bottom slope. Furthermore, the obtained numerical results were validated by employing a test-rig with a torque wrench and a washer-type load cell. It is found that compared to a normal nut, the tightening torque of the single-slot nut increases by a maximum of 20% at a given clamping force. Additionally, it is observed that the bottom slope is the dominant factor affecting tightening; increasing the bottom slope causes improvement in the tightening torque and the anti-loosening performance.
Keywords:
Single-slot nut, Anti-loosening, Tightening torque, Shape parameters, Thread contactAcknowledgments
본 연구는 산업부 광역협력권산업육성사업의 지원에 의해 수행되었음.
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Ph.D. candidate in the Department of Mechanical Engineering, Chungbuk National University.His search interest is Vibration.
E-mail: gsk0221@daum.net
Manager in the Production Engineering Team, Viblock Company.His research interest is Vibration.
E-mail: bestseong@viblock.co.kr
General Manager in the Production Engineering Team, Viblock Company.His research interest is Vibration.
E-mail: jongworks@viblock.co.kr
Professor in the Department of Mechanical Engineering, Chungbuk National University.His research interest is Vibration.
E-mail: esshin@chungbuk.ac.kr