The processing methods of mold parts in Dongguan CNC processing plant include turning processing, drilling processing, washing processing, grinding processing, planing processing, special processing and numerical control processing and other processing methods. Turning in Dongguan CNC processing plant is mainly used to process rotating parts, such as guide posts, guide sleeves, braces, flanges, threads, and so on. Drilling is mainly used to process threaded bottom holes, positioning pin holes, thimble holes, etc. The washing process is mainly to mill the plane with a milling cutter. Grinding is mainly to grind the surface of the workpiece with a grinding wheel. Planing processing is mainly to plan the surface of the workpiece with a planer. Special processing is a method of processing directly using electrical energy, chemical energy, etc. Numerical control processing is mainly to control the machine tool through digital information, so that the processed part and the tool can produce the relative movement that meets the requirements, and realize the processing of the part from the surface. In this article, the Dongguan CNC processing plant mainly discusses the grinding process. my country is one of the oldest countries adopting grinding processing methods. For example, in the ancient scientific masterpiece "Heavenly Creations", there are idioms of "cutting, studying, polishing, grinding", and "grinding" refers to grinding. Cutting. Grinding is a relatively precise metal processing method. The ground parts have high precision and small surface roughness values. At present, the roundness tolerance of the outer surface ground with a high-precision cylindrical grinder can reach about 0.001mm, which is equivalent to 1/70 or less of the thickness of a human hair; its surface roughness value reaches Ra0.025um, and the surface Smooth like a mirror. In modern manufacturing, grinding technology occupies an important position. The grinding level of a country reflects, to a certain extent, the level of machinery manufacturing technology in that country. With the continuous improvement of the quality of mechanical products, the grinding process has also been continuously developed and improved. With the continuous development of modernization of science and technology, grinding processing as an advanced manufacturing technology occupies an important position in national production and life. The development of grinding processing technology has realized precision processing and ultra-precision processing in modern machinery manufacturing, meeting people's demand for high precision, high quality and high automation of products. Generally speaking, according to the grinding wheel speed Vs, the grinding is divided into ordinary grinding (Vs<45 m/s), high-speed grinding (45≤Vs<150 m/s), and ultra-high-speed grinding. (Vs≥150 m/s). According to the grinding accuracy, grinding is divided into ordinary grinding, precision grinding (processing accuracy 1 μm～0.1 μm, surface roughness Ra0.2 μm～0.1 μm), ultra-precision grinding (Processing precision <0.1 μm, surface roughness Ra≤0.025 μm). According to the grinding efficiency, grinding is divided into ordinary grinding, high-efficiency grinding, and high-efficiency grinding including high-speed grinding, ultra-high-speed grinding, and slow feed Grinding, high-efficiency deep-cut grinding, belt grinding, fast short-stroke grinding, high-speed heavy-duty grinding. Grinding refers to the processing method of using abrasives and abrasive tools to remove excess material on the workpiece. According to the different process objectives and requirements, There are many forms of grinding processing methods. In order to meet the needs of development, the grinding technology is developing in the direction of precision, low roughness, high efficiency, high speed and automatic grinding. There are many forms of grinding processing methods in Dongguan CNC processing plants. The production mainly refers to grinding with a grinding wheel. In order to facilitate the use and management, the grinding processing methods are usually divided into Four ways: 1.According to the grinding precision: rough grinding, semi-finishing grinding, fine grinding, mirror grinding, super finishing. 2.According to the feed form: plunge grinding, longitudinal grinding, slow feed grinding, no feed grinding, constant pressure grinding, quantitative grinding. 3. According to the grinding form: belt grinding, centerless grinding, end grinding, peripheral grinding, wide wheel grinding, profile grinding, profiling grinding, oscillation grinding, high-speed grinding, powerful grinding , Constant pressure grinding, manual grinding, dry grinding, wet grinding, grinding, honing, etc. 4.According to the processing surface: External grinding, internal grinding, surface grinding and sharpening (gear grinding and thread grinding) Grinding is the main method of finishing parts. Grinding wheels, whetstones, grinding heads, belts, etc. can be used for grinding, and the most commonly used grinding tools are grinding wheels made of abrasives and binders. Generally, the precision that can be achieved by grinding is IT7~IT5, and the surface roughness Ra value is generally 0.8~0.2μm.