Screw cutting on a lathe is a fundamental process used to produce threaded components for mechanical assemblies. The process involves synchronized rotation of the workpiece and controlled movement of the cutting tool along the axis of the part. This coordination ensures accurate thread pitch, depth, and form.

Lathe machines, especially CNC lathes, provide precise control over feed rates and spindle speed, which is essential for maintaining thread consistency. Operators can cut external or internal threads by selecting the appropriate threading tool and programming the lathe to follow a specific lead or pitch. The use of proper cutting speed and depth ensures clean thread profiles and reduces tool wear.

Different types of threads, such as metric, imperial, single-start, or multi-start, can be produced on a lathe with proper setup. Screw cutting also allows for customization of thread length, taper, and form, depending on the application requirements. In addition, lathes enable the cutting of threads on shafts, bolts, or specialized mechanical components with high precision.

Using a lathe for screw cutting offers advantages in accuracy, repeatability, and flexibility. With careful planning of tool selection, cutting parameters, and part setup, manufacturers can achieve consistent thread quality for a wide range of mechanical applications. Screw cutting on a lathe remains an essential skill in modern machining and continues to support the production of reliable threaded components.