Insert-type threading tools are used in the machining process to create threads, typically for the production of bolts, nuts, screws, etc.
Based on the different threading methods, insert-type threading tools can be mainly divided into three categories:
Thread Spiral Drills: Thread spiral drills are specialized tools for machining internal threads. By rotating the spiral drill, it creates a circular hole in the material being machined, while also processing the thread. This tool is suitable for machining soft materials (such as plastics and non-hardened metals) because its cutting force is small, effectively reducing heat damage and stress during machining.
Thread Rolling Dies: This type of tool forms threads on the material being processed by extrusion. Under the action of thread rolling dies, the material undergoes plastic deformation in a localized area, thereby forming threads. This method is suitable for materials with good toughness, such as steel and aluminum alloys, and can maintain the original properties of the material. Since the rolling dies do not involve cutting, the heat damage and stress during the machining process are relatively small, and the production efficiency is higher.
Thread Cutting Tools: These are tools that form threads on the material being processed through cutting. Thread cutting tools gradually cut into the material being machined during rotation to form threads. This method is suitable for materials of various hardness levels, offering higher machining precision and flexibility. However, the cutting process generates a lot of heat and stress, so there are higher requirements for the durability of the tools and the cooling system.