Comparison of CNC machine tools and traditional machine tools

　　1, highly flexible

　　Machining parts on CNC machine tools mainly depends on the processing procedure. It is different from ordinary machine tools. It does not need to be manufactured, many molds and fixtures are replaced, and the machine tool does not need to be re-adjusted frequently. Therefore, the CNC machine tool is suitable for the occasions where the processed parts are frequently replaced, that is, it is suitable for the production of single-piece, small-batch products and the development of new products, thereby shortening the production preparation cycle and saving a lot of process equipment costs.

　　2, high processing accuracy

　　The machining accuracy of CNC machine tools can generally reach 0.05-0.1MM. CNC machine tools are controlled in the form of digital signals. Each time the CNC device outputs a pulse signal, the moving parts of the machine tool move a pulse equivalent (usually 0.001MM), and the machine tool advances The average error of the backlash of the transmission chain and the screw pitch can be compensated by the numerical control device. Therefore, the positioning accuracy of the numerical control machine tool is relatively high.

　　3. The processing quality is stable and reliable. The same batch of parts are processed on the same machine, under the same processing conditions, using the same tools and processing procedures, the cutting paths of the tools are exactly the same, the consistency of the parts is good, and the quality is stable.

　　4, high productivity

　　The CNC machine tool can effectively reduce the machining time and auxiliary time of the parts. The spindle sound speed and feed rate of the CNC machine tool have a large range, allowing the machine tool to perform powerful cutting with a large amount of cutting. CNC machine tools are entering the era of high-speed machining. The rapid movement and positioning of moving parts of CNC machine tools and high-speed cutting have greatly improved productivity. In addition, it can be used in conjunction with the tool magazine of the machining center to realize continuous processing of multiple procedures on one machine tool, reducing the turnaround time between procedures for semi-finished products and improving productivity.

　　5. Improve working conditions

　　After the CNC machine tool is adjusted before processing, input the program and start it, and the machine tool can automatically and continuously perform processing until the end of the processing. What the operator has to do is program input, editing, parts loading and unloading, tool preparation, machining state observation, parts inspection, etc. The labor intensity is greatly reduced, and the labor of machine tool operators tends to be intellectual work. In addition, machine tools are generally combined, which is both clean and safe.

　　6. Utilize production management modernization

　　The processing of CNC machine tools can accurately estimate the processing time in advance, standardize and modernize the tools and fixtures used, and it is easy to realize the standardization of processing information. It has been organically combined with computer-aided design and manufacturing (CAD/CAM). It is the foundation of modern integrated manufacturing technology.

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