圆锥螺纹需测量外径、有效径、螺距及螺纹半角(内经省略)。 一、圆锥螺纹外径的量法 圆锥螺纹外径的量法与圆锥量规的量法大致相同。其量法如下: (1)用圆锥样板──图1为圆锥样板,用透光方法测量斜度,用两条线测量外径大小。这种方法简单方便,但精度较差,因此,只适用於公差较大 Taper thread to be measured outside diameter, effective diameter, pitch and thread half-width (within omitted). First, the taper thread diameter method Cone thread diameter method and the taper gauge method is roughly the same. The amount of law is as follows: (1) with the cone model ─ ─ Figure 1 for the cone model, with light transmission method to measure the slope, with two lines to measure the size of the outer diameter. This method is simple and convenient, but the accuracy is poor, therefore, only for larger tolerances