てこの平衡位置のばらつきについての研究 : (刃とV形刃受について)

概要

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This paper deals with the experiment carried out by the author under a condition as cose to the actual situation as possible, wherein regarding the dispersion of equilibrium point, the knife edge and V shape bearing are used as the fulcrum of the lever. The inclination of the lever being relatively trifle, the weight working virtically upon the normal component during the weighing process, and the tangential component working instantaneously as a shock on the balance when the weight is added, are made the objects of the present experiment. As a result, two essentially different causes have been discovered for the dispersion of the equilibrium point. One of them is produced due to the variance of the stress distributions resulting from the roughness of the contact surface. The other is, it is believed, that when the shock is given to the balance and the lever moves in the tangential direction, the contact point of the knife edge and bearing geometrically moves, because the bearing is of the V shape. In view of the above, it is believed that the quantitative relations have been made almost clear.
一般社団法人日本機械学会の論文