The meaning of machining

In actual application, any product can be sold and used outside after various series of processing and inspection. According to the data, precision machining is the most frequently worked item in the finished product. After all, only mechanical equipment with excellent performance can produce better products. With the development of modern industries, the structure and configuration of machinery has become a focus. Only when technology is continuously upgraded can the future development of various industries have greater play.

Precision machining refers to the process of changing the shape or performance of a workpiece through a kind of mechanical equipment. According to the difference in processing methods, it can be divided into cutting processing and pressure processing. Mechanical parts are composed of several surfaces. To study the relative relationship of the parts' surfaces, a datum must be determined. The datum is the point, line, and surface on which the position of other points, lines, and surfaces are based on the part. According to the different functions of benchmarks, benchmarks can be divided into design benchmarks and process benchmarks.

The design datum of precision machining lies in the datum used to determine the position of other points, lines and surfaces on the part drawing, which is called the design datum. The process benchmark of precision machining refers to the benchmark used in the processing and assembly of parts, which is called the process benchmark. Process benchmarks are divided into assembly benchmarks, measurement benchmarks and positioning benchmarks according to different uses. 1. Assembly datum: The datum used to determine the position of the part in the component or product during assembly is called the assembly datum. 2. Measurement datum: The datum used to inspect the size and position of the processed surface is called the measurement datum. 3. Positioning datum: The datum used for positioning the workpiece during processing is called the positioning datum. The surface (or line, point) used as the positioning reference can only choose the unprocessed blank surface in the first process. This positioning surface is called the rough reference. In the subsequent processes, the processed surface can be used as the positioning reference , This kind of positioning surface is called fine datum.