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本文通过对有关资料的修正,推导出圆锥内孔小端直径四球法测量用上钢球最小允许直径D_(允min)和下钢球最大允许直径d(max)的新计算式。文章还以数学分析法,在f(d)=(D_(允min)十d)为极小值的条件下,确定了下钢球直径d_(佳选)的计算方法。并以d_(佳选)之值,确定上钢球直径D_(佳选)的计算式。从而解决了上、下钢球最佳直径的定量问题。文中还以标准图册所列举的圆锥滚子轴承为例,计算了d_(佳选)选D_(佳选)。附图3幅,表1个,参考资料4篇。
In this paper, a new formula for calculating the minimum allowable diameter of steel balls D_ (allow min) and the maximum allowable diameter of lower steel balls (d) is deduced by modifying the relevant data. The article also uses mathematical analysis method, under the condition of f (d) = (D_ (allow min) d) as the minimum value, the method of calculating the diameter d_ (preferred) of the lower ball is determined. And d_ (best choice) of the value of the diameter of the ball on the D_ (preferred) of the formula. In order to solve the upper and lower steel ball the optimal diameter of the quantitative problem. The paper also cited the standard atlas of tapered roller bearings, for example, calculated d_ (preferred) selected D_ (preferred). Figure 3 Figure, Table 1, reference 4.