As side milling (also known as side milling), the radial depth of cut should be less than 10% of the cutter diameter, ie ar<0.1D
As face milling (also known as end milling), the radial depth of cut should be less than or equal to 90% of the cutter diameter, ie ar≤0.9D
The radial depth of cut during slot milling is equal to the diameter of the milling cutter, ie, ar=D slot milling is a traditional composite milling method (radial feed after axial feed) or ramp milling (axial feed at the same time).
If axial cutting similar to "drilling" is required, the end teeth of the milling cutter must be centered. If you use interpolation to ream, the depth of the hole is at most 75% of the length of the cutting edge. However, if it is used as a hole in solid materials, the value should not exceed 0.5 to 1D.
In crush milling, the milling cutter rotates in the same direction as the table. The cutter cuts in from the surface of the workpiece, where the thickness of the chip is the greatest. The cutting force produces a clamping force during horizontal milling. Its direction is towards the table. It is important to make sure that there is no gap in the screw of the machine tool. Usually, the surface finish of the milling is smooth and the tool life is improved.
In up-cut milling, the milling cutter rotates in the opposite direction to the table's feed direction. Therefore, the tool cuts in from the zero thickness of the cutting layer and gradually increases to the maximum thickness. This method will result in faster tool wear under certain conditions. Up-milling is useful when milling hot-rolled hardened steel and steel with surface oxide layers
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