CNC machining is a method of machining through computer numerical control (CNC) technology, which can realize high-precision and high-efficiency machining process. To realize precision machining, the following points need to be paid attention to: first of all, in terms of selecting materials, suitable materials should be selected according to the purpose and requirements of machining. For parts requiring precision machining, materials with high hardness, good strength and high stability, such as aluminum alloy and stainless steel, are usually selected.

Secondly, when designing the machining process, it is necessary to consider the balance between machining difficulty and machining precision. According to the shape, size and machining requirements of the parts, the machining process route is reasonably selected, and the appropriate tool, cutting parameters and cutting speed are determined to ensure the accuracy and surface quality of the parts.

In addition, when writing the machining program, the parameters and paths should be reasonably set according to the specific requirements of the parts and the actual situation to ensure the accuracy and stability of the machining process. In CNC machining, attention should also be paid to timely maintenance and repair of the machine tool to ensure the stability and working accuracy of the machine tool.

In addition, during the machining process, the operator needs to operate in strict accordance with the program to ensure the accuracy and stability of the machining process. Timely adjustment of cutting parameters to ensure the consistency and excellence of the machining effect. In general, to realize the precision machining of CNC machining, it is necessary to comprehensively consider the factors of material selection, machining process design, program writing and machine tool maintenance to ensure the stability and accuracy of the entire machining process. Only by being rigorous and meticulous in all aspects can we realize high-precision CNC machining.

CNC (Computer Numerical Control) precision machining is an important automated processing technology in modern manufacturing. The following is a detailed introduction to CNC precision machining: I. Working principle CNC precision machining utilizes a digital control system to automatically control the movement of the machine tool. Through the pre-written CNC program (such as G code and M code), control the machine tool path, cutting speed and feed and other parameters, to achieve precision machining of metal, plastic, wood and other materials. The workflow generally includes the following steps:

Engineers use computer-aided design (CAD) software to create a three-dimensional model of the product. The CAD model is converted to a CNC program in computer-aided manufacturing (CAM) software to generate specific G-code. The G-code is entered into the control system of the CNC machine, which performs digital quantization. The machine tool automatically adjusts the position of the tool and cutting speed according to the instructions of the G code for precise machining.

Second, CNC precision machining main features

High precision: CNC machining can achieve very high machining precision, usually in the range of a few microns, which makes CNC machining very suitable for industries that require high-precision parts, such as aerospace, medical equipment.

High Repeatability: Because CNC machining is controlled by a computer program, it ensures that every part has the same size and shape, which is important for mass production.

Versatility: CNC machines can perform a variety of different types of machining operations such as milling, turning, drilling, cutting, etc. This makes CNC machining very flexible and can meet the needs of different industries and applications.

High degree of automation: During CNC machining, the operator only needs to write the program and monitor the operation of the machine tool without being directly involved in the machining process, which reduces labor costs and allows continuous machining to be performed unattended.

High machining efficiency: CNC machines can perform machining at higher speeds and feed rates, thus increasing productivity.