The milling cutter is a multi-tooth rotary tool, each tooth of which is equivalent to a turning tool fixed on the rotary surface of the milling cutter. When milling, the cutting edges that participate in cutting at the same time are longer, and there is no empty stroke, so the productivity is higher. There are many types of milling cutters with different structures and a wide range of applications, which can be divided into three categories according to their uses: milling cutters for processing planes, milling cutters for processing grooves and milling cutters for processing forming surfaces. The general specifications of milling cutters have been standardized and are generally produced by professional tool factories. Now introduce 2 kinds of common milling cutters.
1、Face milling cutter
Face milling cutter, the main cutting edge is distributed on the cylindrical or conical surface, the end cutting edge is the secondary cutting edge, the axis of the milling cutter is perpendicular to the machined surface. Face milling cutter is mainly used in vertical milling machine or horizontal milling machine to process the step surface and plane, especially suitable for the processing of larger planes, the main angle of 90 ° face milling cutter can be milled at the bottom of the wider step surface.
Face milling cutter processing plane, while participating in the cutting of more teeth, and the vice cutting edge of the trimming effect, so that the processing surface roughness value is small, so you can use a larger cutting amount, higher productivity, widely used.
2、End Mills
End mill is a common milling cutter in CNC milling, its structure, the cutting edge on the cylindrical surface is the main cutting edge, the end face is distributed with a secondary cutting edge, the main cutting edge is generally spiral teeth, which can increase the smoothness of cutting and improve machining accuracy.
Since there is no cutting edge at the core of the end face of the common end mill, the end mill cannot be axially fed when working, and the end face is mainly used to process the bottom plane perpendicular to the side. End mills are mainly used for machining recesses, step surfaces and shaping surfaces with the use of leaning dies.
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