Machine tools refer to machines that manufacture machines and machinery. They mainly use turning tools to turn rotating workpieces. On lathes, drills, reamers, reamers, taps, die and knurling tools can also be used for corresponding processing. . Lathes are mainly used to process shafts, discs, sleeves and other workpieces with rotating surfaces. They are the most widely used type of machine tools in machinery manufacturing and repair factories. They can automatically complete multi-process processing of small and medium-sized workpieces according to certain procedures, and can automatically Loading and unloading materials, repeated processing of a batch of the same workpieces, suitable for mass and mass production.