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Vertical Milling Machine Vertical Milling Machine

Vertical Milling Machine

The milling cutters of the vertical mill are mounted in the spindle, which has in addition the advantage of being extended if necessary in case of drilling or plunge cutting.

The same effect can be easily obtained by raising or lowering the table. The milling cutters rotate on the vertically oriented spindle axis of the vertical mill. One can define the two most widespread vertical mills subtypes, which include bed mills and turret mills.

Among the main characteristic features of the turret mills there are a stationary spindle and a table, moving both perpendicularly and parallel to the spindle axis while cutting. Bridgeport is one of the most characteristic models of this subcategory. A quill often being a constituent part of this category of mills makes it possible to raise or lower the cutter almost in the same way as it is usually made with the drill press.

The cutting in the vertical (Z) direction with the mills of this subcategory is possible in two ways: you can either move the knee or lower the quill. Comparing to the turret mills the bed mills have less advantages in this relation: they have the table moving only perpendicularly to the spindle axis. The spindle in its turn can move only parallel to its axis.

If to choose between the turret mills and bed mills it is worth considering that the turret mills are famous by their versatility but are not too practical being of large size. It takes a lot of effort to reach the quill feed handle or move the knee sometimes. On this reason the most part of large size mills are as a rule bed mills.

The mill-drills are also worth paying attention to because of their relatively small size and reasonable prices. Among their characteristic features there are an X-Y table and the construction reminding of the small drill press. Their only weak point is their quality which leaves much to be desired if we compare them to other types of mills.