Tool bit

A turning tool - in Switzerland and sl in German companies also speed steel - is a tool that is used in the machining for turning. A turning tool is usually made ​​of a steel shaft on which a cutting insert is screwed or clamped or soldered.

For the design of the cutting tool edge see.

Cutting materials

When cutting fabric for turning tools cutting inserts made ​​of coated carbide or ceramic cutting materials are mainly used. More cutting materials are polycrystalline cubic boron nitride, polycrystalline (PD ) and monocrystalline diamond (MD). PD / MD - cutting materials are now in the processing of non-ferrous metals such as Brass, aluminum alloys or titanium alloys. For hard materials is polycrystalline cubic boron nitride usable for cast iron nitride. Chance (eg with difficult shapes or vibration problems ) turning tools made ​​of high speed steel (HSS ) are used even today.

Forms the turning tool

Lathe tools are basically classified into two aspects.

• Cutting direction. The location of the main cutting the shaft determines the cutting direction. Should be noted here that the direction of view of the workpiece is provided. There are the types R ( right-hand cut ) and L ( left cut ), N ( neutral).
• External and internal turning tool. After processing location, a distinction between external and internal turning tool. Side tool usually have a longer shaft, as the cutting must be removed from the cassette further to also far drive into a workpiece can.

Depending on angewandtem rotation method, there are different types of turning tools. These are turning tool with standardized DIN inserts for the most common edits, bench chisel for cutting of grooves and parting of components, as well as thread turning tool for threading.