Patent of cast copper rotor

Let me give you a suggestion. Use a non-standard cylindrical knife. Mark the positioning dimensions on the tool holder. The shape of the blade is similar to the English letter Y, and two or three sizes can be processed at the same time. So the efficiency is high. But pay attention to the strength of the blade. As for the machining parameters, we can adjust them after the tool body is trial-produced. I hope it inspires you.