drejebænke

Drejebænke, often translated as lathes, are machine tools used in metalworking and woodworking to shape materials through a process called turning. The fundamental principle involves rotating a workpiece against a cutting tool. This rotation allows the tool to remove material in a controlled manner, creating symmetrical shapes such as cylinders, cones, spheres, and threads.

There are several types of drejebænke, each designed for specific applications. Center lathes are the most common, featuring a headstock that drives the workpiece and a tailstock to support longer workpieces. Turret lathes offer multiple tools mounted on a rotating turret, enabling quicker tool changes and more efficient production of complex parts. Automatic lathes are designed for high-volume manufacturing, performing a sequence of operations without constant operator intervention. CNC (Computer Numerical Control) drejebænke utilize computer programs to control the movement of the cutting tool, allowing for highly precise and intricate designs.

The workpiece is typically held in a chuck, which is mounted on the headstock spindle, or between centers for longer pieces. The cutting tool, usually made of hardened steel or carbide, is held in a tool post and advanced into the rotating workpiece. The speed of rotation, the depth of cut, and the feed rate of the tool are critical parameters that determine the accuracy and surface finish of the finished part. Drejebænke are essential tools in manufacturing industries for producing a wide range of components, from simple shafts to complex aerospace parts.