对圆弧半径的测量,“计量技术”杂志报导了不少的测量方法。但这些方法,有的借助于光学仪器,有的借助于平台及标准滚棒,通过三角、几何、数学运算直接或间接求得被测圆弧的曲率半径。用这些方法进行安装、调整、测试,运算都比较费时。个别方法对辅助工具的尺寸一致性特别敏感。用“V”形块检测圆弧曲率半径简单、迅速、易于操作,且能保证一定的精度。我们知道“V”形块(铁)通常有60°、90°、 Measurement of the arc radius, “Measurement Technology” magazine reported a number of measurement methods. However, some of these methods rely on optical instruments and some directly or indirectly determine the radius of curvature of the arc to be measured by means of triangulation, geometry and mathematical operations by means of a platform and a standard roller bar. With these methods for installation, adjustment, testing, computing are more time-consuming. Individual methods are particularly sensitive to the dimensional consistency of assistive tools. With the “V” block arc radius of curvature detection is simple, rapid, easy to operate, and can guarantee a certain accuracy. We know that “V” blocks (iron) usually have 60 °, 90 °,