1) Turning is suitable for machining various inner and outer rotating surfaces. The machining precision range of turning is zhi13～IT6, and the surface roughness Ra value is 12.5～1.6.
(2) The structure of the turning tool is simple and easy to manufacture, which is convenient for the reasonable selection of tool material and geometric angle according to the processing requirements. Turning tool sharpening and disassembly are also more convenient.
(3) Turning has strong adaptability to the structure, material and production volume of the workpiece, and is widely used. In addition to turning all kinds of steel, cast iron and non-ferrous metals, it can also turn non-metals such as glass steel, cloth bakelite and nylon. For some non-ferrous metals that are not suitable for grinding, diamond turning tools can be used for fine turning, which can obtain high machining accuracy and small surface roughness values.
(4) In addition to the uneven surface allowance of the blank, most of the turning is continuous cutting with equal cutting cross-section. Therefore, the cutting force changes little, the cutting process is stable, which is conducive to high-speed cutting and powerful cutting, and high production efficiency.