01 Selecting the angles of a turning tool The structure of a turning tool’s cutting edge involves several key components that collectively influence its geometric characteristics and cutting performance. These components include the rake face, the main rear face, the secondary rear face, as well as the primary cutting edge, the secondary cutting edge and the tool tip.

What type of tool is used for external turning on a conventional lathe? What type of tool is used for external turning on a conventional lathe? CNC tools generally refer to indexable insert tools, as they are widely used in CNC machines and do not require grinding. The tools used on each lathe are highly similar, homogeneous and, in some cases, interchangeable.