The key points of operation and use of CNC machines, China Material Recycling Network: The control system of a CNC machine can generally control the machine according to digital program instructions. It can achieve automatic start, stop, reverse and speed change of the spindle, automatically control the feed rate, direction and processing route, select tools and adjust the tool amount and walking trajectory based on the tool size, and complete various auxiliary actions required during processing.
When we use CNC machines to process parts, it is usually necessary to control various actions of the machine. One is to control the sequence of actions, and the other is to control the displacement of each moving part of the machine. When using conventional machines for processing, operations such as starting, stopping, feeding, reversing, spindle speed change, and turning cutting fluid on and off are all manually controlled. When using automatic or profile-following machines for processing, the above operations and motion parameters are controlled in an analog form through devices such as cams, templates, and stops that have been designed. Although they can process relatively complex parts with a certain degree of flexibility and versatility, the accuracy of part processing is affected by the manufacturing accuracy of cams and templates, and the preparation time for procedures is also very long. When using CNC machines to process parts, you just need to encode the part graphics, process parameters, processing steps, etc., into program codes in digital information form and input them into the machine control system. After being processed by the system, the codes are converted into instruction signals to drive the servo mechanism, thereby controlling the coordinated actions of each component of the machine and automatically processing the parts. When changing the processing object, you only need to recompile the program code and input it into the machine, and the numerical control device can replace most of the functions of human brain and hands, control the entire processing process, and manufacture parts of any complexity.
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