In the precision parts processing "target =" _self "> precision parts processing and manufacturing process, due to the different requirements and production conditions of the parts, the precision parts processing and manufacturing process plan is also different. When the same parts are produced by different process plans, their production efficiency and economic benefits are also different. On the premise of ensuring the quality of the parts, the process of formulating a reasonable and feasible process plan with good comprehensive technical and economic benefits is called the process design of precision parts processing.

　　The machining process of precision parts processing is composed of many processes, each of which is composed of a station, a step, a cutting tool, and an installation.

　　The various shapes of precision parts processing are composed of many surfaces in various combinations, and there are certain size and mutual position requirements between the surfaces. The reference is the point, line, and surface on which the position of certain points, lines, and surfaces on the part (or components) is determined, that is, the reference is the surface, line, or point on the part itself or related to the part, and the position of other surfaces, lines, or points on the part is determined according to these surfaces, lines, or points.

The process of machining precision parts is the basic unit of the machining process. The so-called process refers to the part of the process that a worker (or a group of workers) completes continuously on the same workpiece (or several workpieces at the same time) on a machine tool (or a work site). The main feature of a process is that it does not change the processing object, equipment and operator, and the content of the process is completed continuously.