The technical development of CNC machine tools can be divided into the following four stages according to their characteristics:
(1) Mechatronics (60s to 70s)
In the mid-1960s, due to the significant increase in the integration of computer components and the successful development of automatic tool control program system software (APT) in the United States and the Federal Republic of Germany, a highly flexible embedded microprocessor-based computer numerical control appeared. System (CNC). Therefore, after the nascent start-up phase from the 1950s to the early 1960s, CNC machine tools entered the technological development stage of Machatronics in the 1960s and 1970s. Its main features include two aspects: The mechanical, power, control and other functions of the product fully utilize electronic technology and computer technology; second, the machine, electrical hardware and software of the product are integrated and integrated into one.
(2) Information Integration Automation (20s to 90s in the 20th century)
This is a flexible processing system that is suitable for multi-varietal medium and small batch mixed flow production. It is through the information integration of the management platform, optimizing the dispatching and timely scheduling technical preparation, so that the utilization rate of the numerical control machine tool is increased from the normal 80% to 95%. .
Common information integration automation flexible processing systems are: flexible manufacturing system (FMS), flexible manufacturing unit (FMC) and distributed CNC machine unit (DNC) without automated logistics under the management of manufacturing execution system (MES).
(3) Efficient flexibility (from the 1990s to the beginning of the 21st century)
This is mainly used to solve the problem of high productivity in industries such as automobile manufacturing under variable varieties and mass production conditions. By increasing the speed and acceleration of the machine tool, shortening tool change time, improving the seismic capacity of the machine, applying error compensation and high-speed cutting, the flexible production line (FML) consisting of CNC machine tools can achieve high productivity comparable to that of combined machine tools. And more stable machining accuracy. You can also check out the metal processing online for more technical articles.
(4) Composite reconfigurability (since the beginning of the 21st century)
The compound machine tool can further exert the advantages of the centralized machining process of the CNC machine tool. It can complete or almost complete the whole processing of the parts on one machine, which greatly reduces the time for the products to stay in the machine, and can reduce the error of the workpiece installation, especially For multi-process and complex parts, the use of composite machine tools is an effective measure to improve efficiency and accuracy. However, composite machine tools also have high cost problems. To this end, it is necessary to develop a module with mechatronics function, which is reasonably reconstructed according to the processing object, and is used to avoid the problem of functional redundancy and excessive cost of the composite machine tool.
Metal processing online will publish a number of articles on the technical development of CNC machine tools, welcome everyone's attention.
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