Keermestustööriistad

Keermestustööriistad, commonly known as threading tools, are specialized implements used to create internal or external screw threads on a workpiece. These tools are essential in various manufacturing and repair processes where fasteners like bolts, screws, and nuts are utilized. The fundamental principle behind their operation involves removing material in a controlled manner to form the helical ridges and grooves characteristic of a screw thread.

Internal threading is typically achieved using taps. Taps are hardened steel tools with cutting edges that advance into a pre-drilled hole. As the tap rotates, it cuts away material, progressively forming the internal threads. Taps come in various forms, including straight flute, spiral flute, and spiral point, each suited for different materials and applications. External threading is commonly performed using dies. Dies are annular or split rings with cutting edges that are passed over a rod or bolt blank. Rotating the die gradually cuts the external threads onto the workpiece. Threading dies are often held in a die stock for manual operation or used in threading machines.

Beyond taps and dies, specialized threading tools exist for more complex or high-precision applications. These include thread milling cutters, which use a rotating milling cutter to generate threads, offering greater control and the ability to create threads on hardened materials or in less accessible areas. Thread rolling tools deform the material rather than cutting it, resulting in stronger threads with improved grain flow. The selection of the appropriate threading tool depends on factors such as the thread size, pitch, material being worked, desired accuracy, and production volume.