"CNC" is the abbreviation of English Computerized Numerical Control (Computerized Numerical Control)
The CNC machine tool automatically processes the processed parts according to the pre-programmed processing program. We put the part's machining process route, process parameters, tool motion trajectory, displacement, cutting parameters (spindle revolution, feed, back-to-tool, etc.) and auxiliary functions (tool change, spindle forward, reverse, etc.) Cutting fluid on, off, etc.), according to the instruction code and program format specified by the CNC machine tool to compile a processing program list, and then record the contents of the program list on the control medium (such as punched paper tape, magnetic tape, disk, magnetic bubble memory) ), and then input it into the numerical control device of the numerical control machine tool to command the machine tool to process the parts. This whole process from the analysis of the part drawing to the preparation of the control medium is called the compilation of the numerical control program. The difference between CNC machine tools and ordinary machine tools processing parts is that CNC machine tools automatically process parts according to the program, while ordinary machine tools must be operated by humans. We can achieve the purpose of processing different parts by changing the program that controls the motion of the machine tool. Therefore, CNC machine tools are particularly suitable for processing small batches of parts with complex shapes and high precision requirements. Because CNC machine tools must process parts according to programs, programmers will input the program into the CNC device to direct the work of the machine tool. The input of the program is through the control medium.
Traditional mechanical processing is performed by manual operation of ordinary machine tools. During processing, the mechanical tool is shaken by hand to cut metal, and the accuracy of the product is measured by the eye with tools such as calipers. Modern industry has already used computer digitally controlled machine tools for operations. CNC machine tools can automatically process any products and parts directly according to the procedures programmed by technicians in advance. This is what we call "CNC machining". CNC machining is widely used in any field of all mechanical machining, and it is the development trend and important and necessary technical means of mold machining.