# Feed drive

Metal milling machine in material processing - the tool was guided over the workpiece by a feed drive.

The feed drive is a drive that is responsible for the feed movement of a tool or workpiece in a machine tool .

The feed drive regulates the feed speed , which can be constant or variable or leads to the workpiece approaching the tool with precise positioning. Different motors and gears can be used depending on the specific requirements . Asynchronous motors are usually used at a constant feed rate . Further motor types used are stepper motors , synchronous motors , linear motors or torque motors . The feed and the speed adjustment are usually carried out via electronic controls, but mechanical gears such as toothed gears can also be used to set the speed. ${\ displaystyle v_ {f}}$

Most motors generate a rotational movement that needs to be converted into linear movement for the feed. The peripheral speed can be converted into a propulsion speed, for example, by means of a gear unit consisting of threaded spindles or racks .

## literature

• Rico Emmler, Hans-Jürgen Gittel, Thorsten Leps, Maximilian Ober, Frieder Scholz, André Wagenführ: Woodworking. In: André Wagenführ, Frieder Scholz: Taschenbuch der Holztechnik. Specialized book publisher at Carl Hanser Verlag, Leipzig 2008; P. 285 ff. ISBN 978-3-446-22852-8 .