Thread milling, like gear milling, is among the exclusive types of milling operations. It is used to cut threads inside a hole in the workpiece. Thread milling operations utilize special milling cutters in the specific shape of the thread profile.
Moreover, thread milling is a high-accuracy milling process as it requires a helical toolpath in order to cut the thread at the correct pitch. Typically, machinists perform thread milling on a CNC milling machine using specialized toolpath generation cycles.
Producing threads using milling techniques instead of traditional methods like taps offers greater flexibility as the process is conveniently adaptable to any hole size, pitch, and profile.