The HSS tap is manufactured in a number important to assure accuracy and long-term reliability stages. Here is a description of the entire process:
1. Cutting and Annealing
HSS is available in the raw form which is cut into the desired size and machined to anneal it so as to enhance machining and relieve internal stresses.
2. Grinding and Surface Treatment
The annealed tap blank is then quenched and ground to obtain a sharp and precise cutting edge. The tool is then subjected to the cylindrical grinding process to develop the geometry so that it can cut effectively. With surface grinding, the tap is closer to being flat, which lowers the resistance as it cuts.
3. Forming the Taper and Thread Rolling
The tap is then tapered to determine where the cutting angle will be,Thread rolling is performed to establish the threading profile. This final step is crucial for the tap locating properly and cutting true into the workpiece.
4. End Face Grinding and Shank Shaping
The end face of the tap is subjected to precision-grinding for a clean, smooth finish. The round shank is then machined to ensure proper fitment in the tool holder for operation. This process is essential to maximize tool stability and minimize vibration.
5. Central Hole Drilling and Step Turning
The tap also undergoes through-hole drilling and step turning, which optimize the geometry of the tool and ensure a perfect fit during use.
6. Inspection and Final Packaging
Every one is ”tested for sharpness, hardness and thread accuracy.” Following inspection, the taps are boxed and prepared to ship to customers