指示計器用ピボットの尖端に誘発する応力の理論的並びに光弾性額的考察と製造方法 (1)
1960 年 29 巻 12 号 p. 820-825
詳細
1960 年 29 巻 12 号 p. 820-825
Analytical study on frictional torque at pivots and bearings has been pursued by many workers but very few treated the problem of internal stress induced at the extremities of pivots. In the present work, pivots used in switch board indicating instruments are taken up and the stress problem is dealt with theoretically with photoelastical experimental verification. In addition, most desirable hardness and stiffness that pivots should have after quenching are theoretically derived. Electron-microscopical observation reveals metallurgically the state of pivots now in universal use as far from ideal. Technique of producing pivots is touched upon and the use of electric discharge is mentioned as the best means of quenching.
