The development history of CNC machine tools

With the rapid development of production and science and technology, society has increasingly strong requirements for the diversification of mechanical products, product updates are getting faster and faster, and the proportion of multi-variety, medium and small batch production has increased significantly. At the same time, with the rapid growth of automobile industry and light industrial consumer products , cnc machine service  ，The structure of mechanical products is becoming more and more complex, its accuracy is increasing, and its performance is constantly improving. Fierce market competition requires shorter and shorter product development and production cycles. Traditional processing equipment and manufacturing methods have been difficult to adapt to this diversification, flexibility, and efficiency. And high-quality complex parts processing requirements. Therefore, the machine tool, the production equipment for manufacturing mechanical products, will inevitably put forward requirements for high efficiency, high precision and high automation.

Among mechanical products, single-piece and small-batch products account for 70%-80%. The production of this type of product not only puts forward the "three highs" requirements for the machine tool, but also requires the machine tool to have a strong ability to adapt to product changes. In particular, some complex parts composed of curves and surfaces can only be processed manually by drawing lines and templates if they are processed by general-purpose machine tools, or they can be processed by mastering and copying machine tools. The processing accuracy and production efficiency are All have been greatly restricted.
CNC machine tools are produced in order to solve single-piece, small batch, especially high-precision, complex surface parts processing automation and to ensure quality requirements.

In 1947, in order to accurately manufacture helicopter wings, blades and frames, American manufacturers began to explore the use of three-coordinate curve data to control the movement of machine tools, and experimented with processing aircraft parts. In 1952, the MIT Servo Mechanism Research Institute successfully realized the three-axis linkage CNC movement with the control device manufactured in the laboratory and the vertical milling machine, and realized the continuous spatial surface processing of the control milling cutter. It comprehensively applied the electronic computer, automatic control, and servo Driven, precision inspection and new mechanical structure and other technical achievements are a new type of machine tool that can be used to process complex curved parts. The successful development of this milling machine is a technological revolution in the machinery manufacturing industry, bringing the development of the machinery manufacturing industry into a new stage and unveiling the prelude to CNC machining technology.

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