CNC Machining is the process of machining parts through program instructions of CNC machine tools, and the entire process is controlled by a computer system, achieving automation and precision in machining. Compared with traditional mechanical processing methods, CNC machining has higher machining accuracy, more stable machining quality, and higher production efficiency. In CNC machining, selecting appropriate cutting tools is crucial for ensuring machining quality, improving production efficiency, and reducing costs. The following are the main requirements for selecting cutting tools for CNC machining: 1. Tool material: ① Choose according to the type and hardness of the machining material: For soft materials such as aluminum alloy, high-speed steel cutting tools can be selected. For hard materials such as stainless steel or titanium alloy, it is necessary to choose more wear-resistant hard alloy cutting tools or ceramic cutting tools Wear resistance and cutting performance of tool materials: Tool materials should have good wear resistance to extend tool life. At the same time, cutting performance is also important to ensure stable cutting efficiency and machining quality during the machining process. 2、 Geometric shape of cutting tool: The radius, rake angle, and rake angle of the tool tip arc directly affect the machining quality and cutting force. Suitable tool geometries need to be selected based on processing requirements and material characteristics Tool type: Select the appropriate tool type based on the specific shape and size of the workpiece being processed, such as milling cutters, drills, reamers, etc. 3、 Matching tool size ① with the processed workpiece: The size of the tool needs to be selected based on the size and shape of the processed workpiece. Cutting tools that are too large or too small can affect machining accuracy and efficiency. 4、 Tool coating ① improves wear resistance and cutting performance: Tool coating can enhance the wear resistance and cutting performance of tools. Choose suitable coatings as needed, such as titanium alloy coatings, aluminum oxide coatings, etc. 5、 Matching of machining parameters: ① Cutting speed, feed rate, and cutting depth: These machining parameters need to be matched with the tool. Excessive or insufficient machining parameters can lead to rapid tool wear or poor machining quality. 6、 Other requirements: ① High precision: In order to meet the requirements of high-precision CNC machining and automatic tool replacement, the tool needs to have high precision. ② High reliability: Tools and accessories must be reliable and suitable to ensure that there will be no accidental damage or potential defects during the machining process High durability: In CNC machining, the durability of cutting tools is higher than that of tools used in typical machine tool machining. Blade cutting and blade removal require special treatment to avoid further damage to tools and workpieces Economy: When choosing cutting tools, it is also necessary to consider the processing cost. High priced tools may not be suitable for all machining tasks, and cost-effective tools should be selected based on specific needs and machining requirements.