The generation of numerical control relies on the advent of data carriers and data operations in binary form.
In 1908, a perforated metal sheet interchangeable data carrier was introduced; at the end of the 19th century, a paper-based data carrier with an auxiliary function was invented; Shannon conducted fast data calculation and transmission at the Massachusetts Institute of Technology in 1938. Laid the foundation of modern computers, including computer digital control systems. NC technology is developed in close combination with machine tool control.
In 1952, the first CNC machine tool came out, which became an epoch-making event in the history of the world's machinery industry and promoted the development of Automation.
Now, numerical control technology is also called computer numerical control technology (CNC, Computerized Numerical Control). At present, it is a technology that uses a computer to implement digital program control. This technology uses a computer to perform a sequential logic control function on the motion trajectory of the device and the operation of peripheral devices according to a control program stored in advance. Because the computer is used to replace the original numerical control device composed of hardware logic circuits, the implementation of various control functions such as storage, processing, calculation, and logical judgment of input operation instructions can be completed by computer software, and the micro instructions generated by processing are transmitted Drive the equipment to the servo drive by driving a motor or hydraulic actuator.
Traditional mechanical processing is performed by manual operation of ordinary machine tools. During machining, the mechanical tool is shaken by hand to cut metal, and the accuracy of the product is measured by tools such as calipers. Modern industry has long used computer digitally controlled machine tools for operations. CNC machine tools can automatically process any product and component directly according to a program prepared by a technician in advance.
This is what we mean by CNC machining. CNC machining is widely used in all fields of mechanical machining,
it is the development trend of mold machining and important and necessary technical means.
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