The quality and efficiency of CNC thread machining directly affect the overall quality of the parts, and the improvement of CNC machining performance also has a significant impact on the production efficiency of the machining center. Therefore, selecting the appropriate cutting tools and thread machining methods is crucial.

CNC thread machining is a crucial application conducted within a CNC machining center, utilized for creating external and internal threads of various diameters. This process employs specially calibrated rotating tools that cut material through their circular motion, achieving the desired thread depth and pitch.

The primary function of threads is to connect two components, enabling them to rotate freely. CNC thread machining typically involves multiple structural elements, including thread crest, thread root, helix angle, thread pitch, and flank.

Threads can be classified according to various classification schemes, resulting in a multitude of different types of threads.

External threads: External threads are commonly used in components such as bolts, screws, studs, and plug gauges. These threads can be efficiently machined on a lathe or manually cut using round die tools. Additionally, there are hexagonal and square dies specifically designed for specific applications.

Internal thread: An internal thread is a thread machined within a material, typically by cutting with a single-lip thread tool. Traditional thread nuts and single-lip tools can also be used for CNC internal thread machining. It should be noted that internal threads can only be formed by cutting on a concave surface, and if the workpiece design requires the insertion of a screw, internal threads must be machined.