Why is the front Angle of the threading tool zero?
Many of the tools that have precise shape requirements (threading knives, rolling teeth, slotting knives, etc.) are generally zero. The shape and size of the blade are "closely related" to the shape of the shape, which is also easy to measure. Angle of processing before, of course, there are more "portable", tool life is higher, but, measurement of trouble, a former Angle of blade surface, shape, size have change, although very small
Why is the front Angle of the threading tool zero? To guarantee the accuracy of the thread. The cutting and milling of cutting tools is the simplest.
It is estimated that you are talking about a hard alloy turning tool with a high hardness, and if there is a front Angle, the tip and edge of the blade are easily broken when the turning is made. If it is a blade, it needs to be sharpened
