曲面ダイスによる引抜力近似計算式(第2報) : 降伏点一定なる場合, その実験

概要

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This paper describes the experiment executed by the present author for the purpose of finding out how far the actual drawing coincides with the formula which the author had reported in his first report. The author measured the forces with which the low carbon steel was actually drawn through the dies of four different kinds, all of which had been purchased from the ordinary suppliers. Soap and lime water was used as a lubricant, the drawing area reduction being 75-90%. And he made cleared that the measured values of drawing forces well coincided with the calculated values, if the latter were calculated by assumed values of frictional coefficients which were inclined to decrease according to the increase of the normal pressure acting between die-wall and material.
一般社団法人日本機械学会の論文
1952-01-20