The types of thread forming dies are mainly classified according to the machining methods and types of threads. Below are some common types of dies used in thread forming:
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Thread Cutting Dies
- Characteristics: These dies are used to create threads on the surface of a material. The process is typically performed by rotating the cutting die or tool while it engages with the material.
- Applications: Used for external threads such as screws and bolts.
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Thread Rolling Dies
- Characteristics: The thread rolling process uses specially designed thread rolling wheels to "roll" on the surface of a metal rod, compressing it into the shape of a thread without cutting away material.
- Advantages: Provides threads with higher strength and better precision compared to thread cutting. This process also generates less waste.
- Applications: Commonly used for screws, bolts, and mechanical components that require high strength.
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Tapping Dies
- Characteristics: These dies are used to create internal threads in a hole (e.g., in bolts or machine parts that require internal threading).
- Applications: Used for machining internal threads in components like nuts and bolts.
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Automatic Threading Dies
- Characteristics: These dies are used in automatic machining machines to continuously and efficiently create threads. These machines can automatically change and adjust the cutting die to produce various types of threads.
- Applications: Used in mass production where high precision and productivity are required.
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Spiral Thread Dies
- Characteristics: These dies are designed to create spiral threads, where the thread grooves are in a helical shape (which can have varying thread pitch along the length of the screw).
- Applications: Often used in applications that require high load-bearing capacity and impact resistance.
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Conical Thread Dies
- Characteristics: These are used for creating conical-shaped threads, typically found in specialized screws such as those used in compressors or other specific engineering applications.
- Applications: Used for applications requiring a special thread shape.
These thread forming dies can be used for various materials, such as steel, aluminum, or special alloys, depending on the technical requirements of the product.
