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在生产实践中,常常遇到一些带圆弧的零件,象扇形板、半圆环等零件,要测出它们的曲率半径,比较麻烦,但若通过计算法,却可间接测出其准确尺寸。如图所示:具体方法是,先选择一个比较好的平板(或工作台),两个尺寸相同的圆柱或钢球(圆柱尺寸大小合适),再选一个C型铁或夹具,一把大千分尺(或测长机),按图位置,把两圆柱支放在工件两侧,用夹具支稳,用大型千分尺或测长机测量D_2的尺寸,按下式计算其曲率半径R的
In production practice, often encounter some with arc parts, such as the fan plate, semi-circular ring and other parts, to measure the radius of curvature of them, more trouble, but if the calculation method, but can indirectly measure the exact size . As shown: The specific method is to choose a better plate (or table), two the same size of the cylinder or steel ball (the size of the cylinder size appropriate), then choose a C iron or fixture, a large Micrometer (or length measuring machine), according to Figure location, the two cylindrical support placed on both sides of the workpiece, with a clip support stability, with a large micrometer or length measuring machine to measure the size of D_2, according to the following formula to calculate the radius of curvature R