Meanwhile, we change the thread parameters, study the stress distribution caused by changing the pitch, taper and threadAngle, this work can provide a reference for manufacture.
The equations for thread taper, thread pitch, threadangle and height of thread can be derived on the base of fitted lines, which are accurate enough to meet the needs of industrial measurement.
该方法可测量螺纹的锥度、螺距、螺纹夹角和螺纹高度，测量精度可以满足工业测量要求。
3
The top thread trimmer could follow the user's requested to adjust any precise cutting Angle.