Creating threads involves a machining process that requires specialized tools to ensure precision and accuracy. The thread making tools used for making threads can vary depending on the application, material, and threading method. Here are some common tools used for making threads:
- Tap and Die Sets:
- Taps: Taps are cutting tools used to create internal threads in pre-drilled holes. They come in various types, including taper, plug, and bottoming taps, each serving different purposes.
- Dies: Dies are used to create external threads on rods, bolts, or pipes. They are typically used with a die stock or threading machine.
- Threading Inserts:
- Threading inserts are cutting tool inserts that are mounted on toolholders for use in CNC lathes and other machining centers. They are commonly used for high-precision threading in metalwork.
- Thread Mills:
- Thread mills are rotary cutting tools used in CNC milling machines. They cut threads by moving radially (along the axis of the tool) rather than axially (along the length of the tool). This method is suitable for creating threads in holes or on the exterior of a cylindrical workpiece.
- Thread Chasers:
- Thread chasers are used in screw machines or lathes equipped with a threading attachment. They are often used for high-volume production of threaded parts.
- Thread Roll Taps:
- Thread roll taps, also known as thread forming taps, don’t cut threads; instead, they deform the material to create threads. They are commonly used in the production of threaded holes with improved thread strength.
- Die Heads:
- Die heads are used in threading machines for creating external threads on rods or pipes. They hold multiple dies and can produce threads on the entire circumference simultaneously.
- Single-Point Tools:
- Single-point cutting tools, such as single-point threading tools, are used on lathes to cut external threads. They are manually fed into the workpiece to create precise threads.
- Chasing Dials:
- Chasing dials are used in screw machines to control the depth and pitch of the threads. They help maintain accuracy and consistency in high-volume production.
- Thread Gages:
- Thread gages are inspection tools used to verify the accuracy of threaded components. They come in the form of go/no-go gages to check if the threads meet specified tolerances.
- Die Stocks and Tap Wrenches:
- Die stocks are used to hold dies for creating external threads manually, while tap wrenches are used for turning taps during hand threading operations.
- Thread Whirling Attachments:
- Thread whirling attachments are used in CNC machines for producing high-precision, complex threads. This method is suitable for creating threads on parts with intricate shapes.
The choice of the tools for make thread depends on factors such as the desired thread type, material, production volume, and the machining equipment available. Whether using traditional taps and dies or modern CNC machining methods, selecting the right tool for the job is crucial for achieving accurate and reliable threads.