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CNC machine tools are machines that use digital information to achieve automatic control. It compiles information related to the processing of parts (such as the size parameters of the relative motion trajectory between the workpiece and the tool, the process parameters of cutting, and various auxiliary operations) into a machining program sheet in a specified format using specified text, numbers, and symbols, and then inputs it into the CNC device through the control medium. After analysis and processing by the CNC device, Send out various signals and instructions corresponding to the processing program for automatic processing.
The operation of CNC machine tools is in a continuous control process of calculation, output, feedback, etc., to ensure the accuracy of the relative position between the tool and the workpiece.
Machine Tool Features
CNC machine tools are increasingly widely used in the mechanical manufacturing industry because they have the following characteristics:
(1) Automatic machining CNC machines that can adapt to different parts are automatically processed according to the CNC program of the processed parts. When changing the processed parts, as long as the CNC program is changed, there is no need to replace specialized process equipment such as cams, profiles, templates, or drilling and boring molds. Therefore, the short production preparation cycle is conducive to the upgrading of mechanical products.
(2) High production efficiency and machining accuracy, stable machining quality, CNC machine tools can use larger cutting amounts, effectively saving mobile working hours. It also has functions such as automatic transmission, automatic tool change, and other auxiliary operation automation, greatly reducing the auxiliary time and eliminating the need for inspection and measurement between processes. Therefore, the productivity of ordinary machine tools is 3-4 times higher or even higher. At the same time, due to the high accuracy of CNC machine tools themselves, software can also be used for accuracy correction and compensation, and because it automatically processes according to CNC programs, it can avoid human errors. Therefore, not only is the machining accuracy high, but the quality is stable.
(3) It can efficiently and high-quality complete the processing of complex surface parts, with high production efficiency. Its production efficiency can be increased by tens or even tens of times compared to general machine tool processing.
(4) The process is centralized, and one machine can use multiple CNC machines, especially automatic tool changing CNC machines. In one clamping process, most of the parts can be processed, and one CNC machine can replace several ordinary machine tools. This can reduce clamping errors, save auxiliary time such as transportation, measurement, and clamping between processes, and also save the floor space of the machine tool, bringing high economic benefits.
