Thread turning is a precision machining process that is mainly used to manufacture various types of threads, including T-thread (trapezoidal thread), R-thread (round thread) and tapered 

thread. These thread types are widely used in mechanical components such as bolts, nuts, bearings and various connectors to ensure tight fit and force transmission between components. 

Before we talk in depth about the application of milling cutters in thread turning, let's first understand the characteristics of these three types of threads and their application scenarios.

T-thread (trapezoidal thread)

Features and applications:

T-thread, or trapezoidal thread, is characterized by its side forming a trapezoid. This thread provides a high-strength connection and is suitable for scenes with heavier loads, such as screw 

drive systems. Its unique geometry enables it to disperse pressure when it is under load, thereby extending the service life of parts.

R-thread (round thread)

Features and applications:

R-thread, or round thread, has a smooth shape. This thread is often used when a sealing effect is required, such as in pipe connections. Their round design helps provide better sealing and is 

suitable for systems that transport liquids or gases.

Tapered thread

Features and applications:

Tapered threads are named for their tapered appearance and are commonly found in connectors that require self-locking functions. The design of this thread allows for a tighter seal when 

connected, and is particularly suitable for leak-proof applications such as water pipe connections.

Use of milling cutters

Milling cutters are key tools for thread turning. They are designed according to specific thread shapes to accurately cut the required thread shape. When choosing a milling cutter, it is 

necessary to consider not only the type of thread, but also the hardness of the material, the precision requirements for processing, and production efficiency.

Types of milling cutters:

Straight tooth milling cutters: Suitable for most general thread processing, especially when processing straight or wider threads.

Spiral tooth milling cutters: Used for processing deep threads or difficult-to-process materials. Its spiral design helps to remove chips and reduce cutting resistance.

Tapered milling cutters: Designed specifically for processing tapered threads, they can accurately form the required tapered threads.

Note when using:

Make sure the milling cutter is aligned with the axis of the workpiece to avoid thread deflection.

Select appropriate cutting speeds and feed rates to prevent excessive tool wear and achieve good surface finish.

Use appropriate lubricants and coolants to extend tool life and prevent overheating of the workpiece.