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在计算圆锥体时,经常要计算斜角,计算斜角的方法有多种:用三角函数计算,计算准确,但费时间;用常数法,方法简单,但计算不准确。这里介绍一种口诀法,简便易行,对于小斜角计算较为准确,两句口诀易记,斜角即可按锥长,大头、小头等值算出。上间隔,下六十,斜角、长度放两边(见图1);要想求出斜角值,上下相乘除
There are many ways to calculate the bevel angle when calculating the cone. There are many ways to calculate the bevel angle: Calculating with trigonometric function is accurate, but it takes time; using the constant method, the method is simple, but the calculation is not accurate. Here introduced a dictation method, simple and easy, for a more accurate calculation of small bends, two formulas easy to remember, bevel length, bulk, small head equivalent calculation. On the interval, the next sixty, bevel, the length of both sides (see Figure 1); To find the bevel value, the upper and lower multiplication