Development overview and future development trend

2022-08-14
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Overview of the development of machine tools in the United States and analysis of future development trends

overview of the development of machine tools in the United States and analysis of future development trends

information on China's construction machinery

Guide: successive U.S. governments have attached great importance to the machine tool industry, and the U.S. Department of defense and other departments have constantly put forward the development direction and scientific research tasks of machine tools due to their military needs, and provided sufficient funds. At the same time, it has attracted world talents, In development, we pay particular attention to efficiency and innovation, and pay attention to basic scientific research. Machine

successive U.S. governments have attached great importance to the machine tool industry. The U.S. Department of defense and other departments have constantly put forward the development direction and scientific research tasks of machine tools due to their military needs, and provided sufficient funds. At the same time, Luo world talents pay special attention to "efficiency" and "innovation" in the development, and pay attention to basic scientific research. Machine tool technology continues to innovate, such as developing the world's first CNC machine tool in 1952, creating a machining center in 1958, developing FMS in the early 1970s, and initiating an open CNC system in 1987. Because the United States first developed a large number of automatic lines required for mass production automation in combination with the production needs of automobiles and bearings, and its electronic and computer technologies are leading in the world, its CNC machine tool has a solid foundation in host design, manufacturing and CNC system, and has always attached importance to scientific research and innovation, so its high-performance CNC machine tool technology has always been leading in the world. However, its shortcomings lie in the emphasis on basic scientific research and the neglect of applied technology. Coupled with the relaxation of government guidance in the 1980s, the growth of NC machine tool production slowed down. In 1982, it was surpassed by rising star Japan and imported in large quantities. Since the 1990s, the government has corrected the past bias. CNC machine tools have shifted from technology to practical use, and the output has gradually picked up. The American machine tool industry started 50 years later than the UK, but it soon surpassed the UK in terms of manufacturing technology and ranked first in the world. In 1896, Ford manufactured the first car. In order to cooperate with the mass production of cars, Gleason developed a complete set of equipment and tools for gear processing and measurement, and other companies also developed many new and efficient automatic machine tools. In 1934, the world's first modular machine tool automatic line was developed. In 1948, the world's first automatic line with an annual output of 30million sets of bearings was established, which rapidly increased the output of automobiles. In 1950, the output of automobiles reached 8million (compared with 2.07 million in 2000). Since then, the American machine tool industry has developed rapidly, ranking first in the world for a long time in terms of the progressiveness of machine tool technology, output and production scale. Although in the mid-1980s, the U.S. economy declined, and the machine tool industry once fell into decline, which was overtaken by Japan and Germany, the government soon took measures to reverse the situation

at present, the American machine tool manufacturing industry is still in the leading position in the world in machine tool technology and industrial production, such as efficient automatic machine tools, automatic production lines, NC machine tools, FMS, etc. It is mainly distributed in the Midwest and northeast States, and the main consumer users are automobile manufacturing, aviation industry, construction industry and medical equipment manufacturing industry

the reason why American machine tool technology can maintain a long-term lead in the world is that the government has played a vital role in guiding and strengthening research and development and continuous innovation. It is mainly manifested in:

first, make plans and measures for major directional scientific research projects and provide sufficient funds. For example, it provides a lot of funds for the research and development of NC machine tools. Provide us $100million for the research and development of the new generation NC system

secondly, organize and guide scientific research cooperation between relevant scientific research institutions and enterprises. For example, the research and development of the new generation NC system is developed by the National Manufacturing Science Center in collaboration with the U.S. Air Force; The government organized General Motors, Boeing aircraft company and relevant machine tool industry companies to jointly develop CIM

thirdly, after the development of new products, we will organize ordering, promote and use them, and accelerate the further deepening of scientific research. For example, after the Massachusetts Institute of technology developed the first NC milling machine in 1952, it immediately organized the military industry department to order 100 sets for production and continuously improve them, thus accelerating the continuous improvement of NC machine tool technology. Another example: in 1994, after the American GL company developed a varla4 parallel mechanism machine tool, which is the world's first machine tool to eat and live with its employees for more than 1000 days and nights, it timely organized relevant universities to study and analyze it and used it in enterprises, so as to further improve its technology

due to the lack of skilled workers in the United States and the relatively high wages of workers, machine tool users require machine tool manufacturers to have more flexibility in the use of machine tools, which can open the door to the utilization program of anisotropic 3D printing, and can be programmed repeatedly to reduce the demand for skilled workers. Due to the increasingly fierce competition in the automotive industry, the vehicle model update cycle is also getting shorter and shorter. The automotive industry requires machine tools with flexible performance, wide range of use, and short commissioning cycle to meet the requirements of small vehicle production batches and fast replacement. The demand for high-speed machine tools in the aerospace, automotive and mold manufacturing industries in the United States is increasing. Due to environmental protection, many customers require the bed to reduce the use of coolant when the machine is loaded. The above coordination promotes the establishment of an industrial alliance in key new material fields with capital as the link and the participation of government, industry, University, research fund and the Big Dipper 7 star. Various situations show that scientific and technological progress is the main factor affecting the development of the machine tool industry in the United States

for example, at present, electronization, high-speed and precision have become the mainstream of the development of American machine tool industry: for example, American enterprises effectively integrate the purchasing and inventory systems of suppliers and customers through enterprise to enterprise services; Large automobile companies (General Motors, Ford, Daimler/Chrysler) and aerospace companies (Boeing, Lockheed) all design and develop synchronously with relevant systems worldwide through this network service; Manufacturing process management, remote monitoring, troubleshooting and after-sales service in the machine tool industry are becoming increasingly popular; The spindle of milling machine adopts hydraulic bearing mold, and uses non-contact type to replace ball bearing; Linear motors get rid of application restrictions and enter commercialization

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