How To Determine Morse Taper Of Taper Shank Fried Dough Twists Drill?

Taper shank Fried Dough Twists drill is a widely used tool for hole machining. The usual diameter range is 0.25-80 millimeters. It mainly consists of a working part and a handle. The working part has two spiral grooves in the shape of Fried Dough Twists, hence the name.
The taper shank Fried Dough Twists drill is different from the straight shank Fried Dough Twists drill. The taper shank Fried Dough Twists drill has taper. Different specifications of Fried Dough Twists drills have different Morse taper.
Mohs taper is an international standard for taper used in static fit for precise positioning. Due to the small taper, a certain amount of torque can be transmitted using the principle of friction, and because it is a taper fit, it can be easily disassembled. Within a certain range of the same taper, the workpiece can be freely disassembled and reassembled without affecting the use effect during operation. For example, for a drilling cone handle drill, if the drill bit needs to be disassembled for grinding during use, reinstalling it after disassembly will not affect the center position of the drill bit.
Mohs taper has seven numbers: 0, 1, 2, 3, 4, 5, and 6, with varying taper values. The nominal diameters of each model are 9.045, 12.065, 17.78, 23.825, 31.267, 44.399, and 63.348, respectively. Mainly used for various cutting tools (such as drill bits, milling cutters), various tool holders, and machine tool spindle hole taper.
Hot rolling and twisting process is widely used in the manufacture of taper shank Fried Dough Twists drills in China. Its characteristic is to use gradually formed fan-shaped plates to be hot-rolled into straight grooves, then twisted into spiral grooves, and processed to meet standard requirements. The advantage is high production efficiency, which can fully utilize raw materials. The internal structure of the processed drill bit blank has fiber continuity, refined grain size, uniform distribution of carbides, and high red hardness.