圆锥螺纹中最普遍的是布氏圆锥螺纹,这种螺纹的断面角为60°,断面角的平分线垂直于轴线,锥度为1/16。圆锥螺纹中径测量一般采用正弦尺的量法,如图1所示:通过计算得出两组量块的尺寸,用测微计按(?)子校好零位后,将其移到三针上读取读数,然后算出偏差的数值。 Tapered taper threads are the most common type of taper thread. The thread has a cross-sectional angle of 60 ° and the bisector of the cross-sectional angle is perpendicular to the axis with a taper of 1/16. Taper thread diameter measurement using the sine rule of the amount of law, as shown in Figure 1: Calculated by the two groups of block size, with a micrometer (?) After the school a good zero, it will be moved to three The needle reads the reading, then calculates the value of the deviation.