Metal is machined by fixing the material onto the machine and rotating it so that the cutting tool (turning tool) comes into contact with the workpiece and removes material.
Using an NC lathe with a constant speed, the spindle rotation speed can be specified depending on the program.
By adjusting the feed rate and controlling the movement based on the state of contact with the cutting tool, various types of metal machining can be performed, such as drilling holes, cutting grooves, and threading.