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The development trend of numerical control technology

  27 Aug , 2020         Pan         8175

With the development of numerical control technology and the expansion of its application field, numerical control engraving machine is playing an increasingly important role in the development of some core industries.
    With the development of numerical control technology and the expansion of its application field, numerical control engraving machine is playing an increasingly important role in the development of some core industries.Today, we will share with you the development trend and future of CNC machining in 2020.
    Numerical control technology has not only brought revolutionary changes to the traditional manufacturing industry, making the manufacturing industry a symbol of industrialization, but also with the continuous development of numerical control processing technology and the continuous expansion of the application field, it has played an important role in the development of some important industries of the national economy and people's livelihood.More Important Role Although the development trend of high precision and high speed has been more than a decade ago, the development of science and technology is never-ending.The meaning of high precision and high speed is changing constantly, and it is developing towards the limit of precision and speed.
    From the development trend of numerical control machining technology in the world, there are mainly the following aspects:
    1. Development of high-speed, precision, intelligent and miniaturized machine tools.
    With the wide application of automotive, aerospace and other industrial light alloy materials, high-speed processing has become an important development trend of manufacturing technology.High speed machining (HSM) has many advantages, such as shortening machining time, improving machining precision and surface quality, etc.The high speed machining of cnc machine tools requires new NUMERICAL control system, high speed motorized spindle and high speed servo feed drive, as well as the optimization and weight reduction of the machine structure.High speed machining is not only the equipment itself, but also the integration of machine tools, tools, tool holder, fixture and CNC programming technology and personnel quality.The ultimate goal of high speed is to improve efficiency.Machine tools are one of the keys to high efficiency.This is by no means the whole story.Productivity and efficiency are at the tip of the knife.
    2. The rapid development of five-axis linkage machining and composite machining machine tools.
    Using five-axis connecting rod mechanism to process 3d curved surface parts, the best geometry shape of the cutter not only has higher machining precision, but also greatly improves the machining efficiency.It is generally believed that the efficiency of five-axis machine tools can be equal to two three-axis machine tools, especially when the use of super-hard materials such as cubic nitride tool high-speed milling hardened steel parts, five-axis machining is more effective than three-axis machining.However, in the past, due to the complex mainframe structure of the five-axis CNC system, its price is several times that of the three-axis CNC system.The development of the current nc machining technology greatly simplifies the structure of the compound spindle used in the five-axis machining, greatly reducing the manufacturing difficulty and cost, and narrowing the price gap of the NC system.Therefore, the five-axis linkage technology promotes the development of compound spindle head five-axis linkage machine tool and compound machining machine tool.
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    3. Development of new structures, new materials and new design methods.
    The high speed and high precision of the machine tool require the simplification and reduction of the structure of the machine tool, so as to reduce the negative impact of the inertia of the machine tool parts on the machining accuracy and greatly improve the dynamic performance of the machine tool.For example, the topological optimization of machine tool parts with the help of finite element analysis, the design of box structure, the use of hollow welding structure, the use of lead alloy materials, has begun to move from the laboratory to practical applications.
    The tool design and development of CNC machine tools should transition from 2D CAD to 3D AD as soon as possible.3d modeling and simulation is the foundation of modern design and the source of enterprise technology advantage.On this basis, the integration of CAD, CAM, CAE and PDM was carried out, which accelerated the development of new products, ensured the smooth production of new products, and gradually realized the product life cycle management
    4. Development of open NUMERICAL control system.
    Many countries have carried on the research to the open numerical control system, the open numerical control system has become the future numerical control system development direction.So-called open CNC system, is the index for the development of the control system can machine tool manufacturers and end users, in a unified operating platform, by changing, adding or cutting structure object (CNC), formed a series, and easy to integrate the special application and know-how into control system, the rapid implement different varieties of different levels of open CNC system, form a distinctive brand products.Open CNC systems come in three forms
    A. A completely open system, that is, A CNC system based on A microcomputer, which USES A real-time operating system as A platform, develops various functions of the CNC system, transmits data through A servo card, and controls the motion of the coordinate axis motor.
    B. Embedded system, namely CNC +PC, CNC controls the motion of coordinate motor, and PC serves as man-machine interface and network communication.
    C. Fusion system, PC motherboard is added on the basis of NUMERICAL control to provide keyboard operation and improve man-machine interface function.
The architecture specification, communication specification, configuration specification, operating platform, function library and software development tool of open NUMERICAL control system are the core of current research.
    5. Development of reconfigurable manufacturing system.
    With the acceleration of product upgrading, the reconfiguration of special-purpose machine tools and the reconfiguration of manufacturing systems are becoming increasingly important.By modularization of nc machining units and functional components, the manufacturing system can be rapidly reorganized and configured to meet the production requirements of the transformed products.Standardization and standardization of mechanical, electrical, electronic, liquid and gas interfaces is the key to achieving reorganization.
    6. Develop virtual machine tools and virtual manufacturing.
    In order to speed up the development speed and quality of new cnc machine tools, in the design stage, with the help of virtual reality technology, the correctness and performance of machine tool design can be evaluated before the machine tool manufacturing, and various errors in the design process can be found in the early stage, in order to reduce losses and improve the quality of new machine tool development.
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