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The stability in attitude of a flat magnetic contact spring is investigated. This spring has a gimbal property by which the moving contact moves parallel and the stable contact condition can be obtained. While, the rotational stiffness is small, so that load characteristics of the spring are influenced significantly by the eccentricity. Here, it is assumed that the moving contact is expressed by the three degree-of-freedom model. Then, it is proven that the moving contact can touch with the stationary one without rotation. The results from analyses and experiments are as follows : (1) Thestable contact condition is obtained if the rotational stiffness is large. (2) When the rotational stiffness is small, the influence of moment caused by concentration of magnetic flux is larger and the variation of force point of application is more remarkable as the eccentricity is larger. In this case, the force that applies to the moving contact is considered to be necessary as distributed load. (3) Load characteristics are obtained in the actuated state by magnetic force. The allowable eccentricity is obtained for practical usage, ε=0.12 (ε=|<I>e</I>|/<I>d</I> : <I>e</I>; eccentricity, <I>d</I>; diameter of stational contact).
- 公益社団法人 精密工学会の論文
公益社団法人 精密工学会 | 論文
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