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Milling Machine Terminology

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Milling machines are basically classified as vertical or horizontal. They are also classified as knee-type, ram-type, manufacturing or bed type, and planer-type. Most mills have self-contained electric drive motors, coolant systems, variable spindle speeds, and power-operated table feeds

Milling is the process of machining flat, curved, or irregular surfaces by feeding the work piece against a rotating cutter containing a number of cutting edges.

Milling operations may be classified under four general headings as follows:

•Face milling. Machining flat surfaces which are at right angles to the axis of the cutter.

•Plain or slab milling. Machining flat surfaces which are parallel to the axis of the cutter.

•Angular milling. Machining flat surfaces which are at an inclination to the axis of the cutter.

•Form milling. Machining surfaces having an irregular outline.

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