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Milling
Milling involves the use of rotating multitoothed cutters moved into the workpiece, allowing for a wide variety of cutting operations.
The three main categories of milling are as follows:
- Face milling - the surface of the workpiece is parallel to the cutter face located at the end of a spindle or shaft. The cutters are located on the face and edge of the rotating cutter.
- Peripheral milling (slab milling) - the surface being machined is parallel to the (often helical) cutting teeth in the periphery of the tool. >
- End milling - fluted cutting edges are arranged on the circumference and end of a rotating shaft that is vertical to the workpiece. The cutting teeth are found on the end of the cutter and the circumference of the cutter body.
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Milling tools may be used in two distinct methods that are defined by how the workpiece is fed into the cutting edges:
- Conventional or up-milling - the workpiece is fed against the rotating cutting teeth.
- Climb or down-milling - the workpiece is fed in the same direction as the rotating cutter, producing a finer finish and an extended tool life.
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