Precision parts processing is the most commonly used measure and method in the industrial stage. For this technology, the first thing to consider is the quality and structure of the part itself. If inferior parts are selected, no matter what method of processing is adopted, it will not help. Therefore, the quality of parts in part processing is a very important step. When it comes to parts, it is one of the essential products in many mechanical devices. Parts are the basic elements of the machine. The machine generally includes one or several transmission parts (such as electric motors, internal combustion engines, steam engines) for receiving external energy.

Realize the executive part of the machine production function (such as the tool in the machine tool), transfer the motion and power of the prime mover to the transmission part of the executive part (such as the gear and screw transmission mechanism in the machine tool), and ensure the detection of the coordinated work of each part of the machine It is composed of a control system (such as a numerical control system in a machine tool) (that is, the machine is composed of a driving part, a transmission part, an execution part, and a measurement and control part). The machine is further broken down, and various parts can be obtained.

Parts are the basic elements of the machine, which can be broadly divided into two categories: one is the parts that can be used in various machines (such as gears, shafts, etc.), called general parts; the other is The parts (such as gun bolts, propellers, etc.) that are only used in different types of machines are called special parts; in addition, the part assembly composed of some cooperative parts is called parts or components (such as couplings, reducers, etc.) Wait).