According to the use of the environment can be divided into hand taps and machine tap, according to specifications can be divided into metric, American and British tap, according to the origin Can be divided into imported tap and domestic tap. Taps are the main tool for manufacturing operators to process threads.
A milling cutter is a rotating tool with one or more teeth for milling. The work of the teeth in turn intermittently cut the workpiece margin. Milling cutter is mainly used in milling machine processing plane, step, groove, forming the surface and cut off the workpiece. In the flank surface grinding out a narrow edge to form a back angle, because the cutting angle is reasonable, its life is high. Milling cutter has face milling cutter, end mill, angle cutter, cylindrical cutter and other forms, end mill and wire tapping looks somewhat similar.
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