What is the Angle of the threading tool?
Pipe threads have 55 degrees of non-sealing and 55 degree seals. The diameter of the thread is guaranteed by controlling the total depth of the multiple feed. Every time when threading cutting depth volume is smaller, and the total amount of cutting depth can work according to the calculation of the thread tooth high (high working tooth = 0.54 x artifact of pitch, the unit is mm), controlled by skateboard dial in roughly, and with the aid of the thread gauge to measure. Threading requirements: 1) the blade of a car knife is equal to the Angle of the thread profile. 2) before the Angle between 0 = 0 °, coarse thread in order to improve the cutting condition, available with positive rake Angle of cutting tool (gamma 0 = 5 ° ~ 15 °).
The metric system thread is 60 degrees, the English thread 55 degrees, the trapezoidal thread 30 degrees, the metric worm 40 degree, and the English worm 29 degrees.
