What are the NC tools? Tools commonly used in NC machining
The cutting tool of NC plane drilling machine is one of the preconditions to improve the machining efficiency. Its selection depends on the geometry of the workpiece to be processed, the material state, the fixture and the rigidity of the selected tool. Different tools have different uses in NC machining process, so what are the commonly used tools in NC machining process?
4. Broach
Broach is a kind of multi tooth cutting tool with high machining precision and cutting efficiency. It is widely used in mass production and can process various internal and external surfaces. Broaches can be divided into internal broach and external broach according to the different surface of the workpiece. When broach is used for machining, in addition to selecting the front angle and rear angle of the cutter teeth according to the workpiece material, and determining the broach size according to the size of the workpiece processing surface (such as the diameter of the circular hole), two parameters should be determined: (1) tooth rise angle AF [i.e., the difference between the radius or height of the front and rear teeth (or tooth group)]; (2) tooth pitch P [i.e., the axial distance between two adjacent cutter teeth].
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