Determining which parts to process is the first step in choosing a device. According to the needs of technological transformation and production development, the enterprise determines which parts are available, and those processes are prepared to be completed with new processing equipment, taking into account the long-term planning of product development. The machining precision of CNC lathe is controlled by digital signal. Each output of a pulse signal by the numerical control device moves a pulse equivalent of the moving parts of the lathe, and the average error of the backlash and the screw pitch of the lathe feed chain can be The numerical control device compensates, so the positioning accuracy of the numerically controlled lathe is relatively high. Plates, revolving bodies and special-shaped classes; according to the processing accuracy requirements can be divided into ordinary and precision grades. The classification of typical parts is clear, and the basic processing equipment is relatively clear. CNC lathe can effectively reduce the machining time and auxiliary time of parts. The range of spindle speed and feed rate of CNC lathe is large, which allows the lathe to carry out powerful cutting with large cutting amount. CNC lathe is entering the era of high-speed machining, moving parts of CNC lathe The fast moving and positioning and high-speed cutting process reduces the turnaround time between the semi-finished products and improves the production efficiency. The shape of the parts is quite different, and the processing time of various parts greatly exceeds the problems of full-load working hours of the equipment. Therefore, it is necessary to further select a typical workpiece family that determines the production program and is closer to the requirements. Typical workpiece families can be divided into diamonds according to their appearance. After the CNC lathe is adjusted before processing, the program is input and started, and the lathe can be automatically and continuously processed until the end of processing. The operator is mainly the input, editing, loading and unloading parts of the program, the preparation of the tool, the observation of the processing state, the inspection of the parts, etc., the labor intensity is greatly reduced, and the labor of the lathe operator tends to be an intellectual work. In addition, lathes are generally closed, that is, clean and safe. The machining of CNC lathe can accurately estimate the machining time in advance, and the tools and fixtures used can be standardized and modernized. CNC lathes use digital signals and standard codes as control information, which is easy to standardize processing information. It has been organically combined with computer-aided design and manufacturing, and is the basis of modern integrated manufacturing technology. Group these parts into groups using group techniques to determine the typical part families that are to be prepared for the main machining object. In the categorization, there are often many differences in the size of the parts. Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn N-Butyl-N-Methylpyrrolidinium Bromide,N-Butyl-N-Methylpyrrolidinium Bromide 93457-69-3,Cas 93457-69-3,Pyrrolidine Ionic Liquids Henan Tianfu Chemical Co.,Ltd , https://www.tianfuchem.com