The essence of turning consists in cutting allowance from the surface of the workpiece until the part acquires the desired shape and required dimensions. High-precision machines can make miniature parts and spare parts for various mechanisms, which in operation have rotational movements (for example, the axis of the clock movement). Modern innovative equipment with program control system allows carving small parts of any complexity. When carving small parts, which are not so widely used in any industry, precision turning is used.
Precision turning ensures a surface of regular geometric shape, with precise spatial position of axes and surface roughness Ra = 0,63 - 0,063 µm, however, this method is highly productive.
Particular attention is paid to the choice of cutting tools. The shape of the cutting tool must correspond to the type of turning operation. In some cases, when modeling small parts professionals can use hand cutting tools. The application of this tool using hand tool rest allows you performing almost all modeling works. You can process aluminum alloys, bronze, brass, grey iron, cast steel, all steels and other alloys.
The whole process of turning small parts is something like wedging, and the parts involved serve as wedges. A well sharpened cutting tool, whose edge strongly holds the workpiece, is cut into the surface of the workpiece and at the same time stands up against internal cohesive forces of the in-process part. Thus, a certain layer is removed from the workpiece surface, forming a chip.