Straight forward method: a peeling machine like thread, small pitch, fine tooth thread can be used straight forward method.
The processing method does not change the Z axis (axial direction) of the tool in the process of processing, and the cutting feed (direction of diameter) is used to complete the cutting of the thread.
About feed for large pitch thread machining, multi thread and other parts, the machining surface is too wide, large contact surface. With the straight way, the machine tool, the workpiece will have a great impact, and even have a knife, fly, Mongolia car phenomenon. So, only take about feed to complete.
The processing method is to finish the processing of one side of thread by changing the direction of the Z axis, that is, the starting point of the feed. It is finished on the other side, and finally trimming the two sides and bottom surfaces. This method is called about feed.
Note: it is a side side processing to reduce the contact area between the tool and the workpiece. It can be processed with one knife left and the next tool right. The function is to expand the groove.
Tapping, the buckle should be classified as the direct forming of the tool.
