China's first milling machine for propellers

After attending the acceptance of the national "863 Program" project undertaken by Wuhan Heavy Machine Tool Group Co., Ltd. (hereinafter referred to as Wuzhong), the CKX5680 CNC seven-axis five-link motor-milling combined machining machine, the deputy chief engineer of the Beijing Machine Tool Research Institute, Professor-level senior engineer Sheng Bohao gave a high rating.
He told reporters that this is the first large-scale vertical turning and milling machine tool in China, which is mainly used to process large propellers. If the import cost more than 10 million US dollars, and the project is successful, it will cost more than 10 million yuan. It can be said that Wu Zhong’s successful research and development, he believes that a major problem has been solved from both strategic and economic aspects.
It is reported that the machine has a maximum processing diameter of 8 meters, a height of 2 meters, and a work bench with a load capacity of 100 tons. It not only has the function of precision milling of the propeller blade surface (including the overlapping part), but also can utilize the characteristics of the turning and milling function. The realization of the single-clamping multi-surface machining of the propeller can greatly improve the processing quality of the propellers for ships in China.
It is difficult for non-industry people in the country to understand the strategic position of five-axis CNC machine tools. Therefore, the Toshiba Incident has to be mentioned here: At the end of the last century, Toshiba Corporation of Japan sold several five-axis CNC milling machines to the former Soviet Union. The former Soviet Union used it to manufacture nuclear submarine propellers. Due to the improved processing precision, the noise was greatly reduced. So that the US sonar could not detect the movement of the former Soviet nuclear submarine. The US authorities were extremely angry, and Toshiba violated the strategic material embargo policy and punish the latter.
The strategic position of the five-axis CNC machine tool is evident. Not only that, the five-axis CNC machine tools have a significant influence on a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries.
Liang Xunyi, honorary chairman of the China Machine Tool Association, pointed out that the equipment manufacturing industry is the cornerstone of a country's industry. It provides an important means for the development of new technologies, new products and modern industrial production. It is an indispensable strategic industry, even if it is The developed industrialized countries are also highly valued. In recent years, with the rapid development of China's national economy and the need for national defense construction, there is an urgent need for high-end CNC machine tools. Machine tools are a symbol of the country's manufacturing level. On behalf of the highest level of machine tool manufacturing, the five-axis linkage CNC machine tool system, in a sense, reflects the state of industrial development of a country. For a long time, the western industrialized countries led by the United States have always used the five-axis linkage CNC machine tool system as an important strategic material to implement an export licensing system. Even in today's globalized trade, high-precision CNC machine tools are still "hard to find". At this year's International Machine Tool Show, the Cincinnati Company of the United States exhibited a high-end machine tool for processing aircraft composite materials. When interested people inquired, they knew that the company only provided Finished products and did not sell machine tools.
In one fell swoop, the chief engineer of Wuzhong, Guilin, told reporters that the success of the CKX5680 CNC seven-axis five-link motor-milling combined machining machine project was hard-won and lasted for four years. He believes that the project has achieved independent innovation in the aspects of host, control and space surface processing. The core technology of its research and development can be used for key components of modern power generation equipment in China's energy industry (such as large blades and turbine runners). Manufacturing and processing, etc., provide common processing technology and equipment manufacturing technology, provide high-performance domestic manufacturing equipment for aircraft engine and rocket engine and ship propeller manufacturing in China, fill the domestic gap, and break the restrictions and blockades of developed countries in the West, whether it is for China. National defense construction is also of great significance to the development of relevant industries in the national economy.

Prior to this, Wuzhong also held a technical hearing on the super large single-column vertical turning and milling machine tool. This is a new product ordered by Dongfang Electric (Guangzhou) Heavy Machinery Co., Ltd. to Wuhan Heavy, with a load of 600 tons. The machine tool with such weight is the first in the world.
2006 is the harvest year for Wuzhong's technological innovation. At the beginning of the year, at the National Science and Technology Conference, its self-developed CKX53160 CNC single-column vertical milling lathe was awarded the second prize of scientific and technological progress awarded by the State Council. This is the highest level of technological progress awards ever obtained by the national machine tool industry; The National Development and Reform Commission promulgated the honorary title of “Important Units in the Localization of Major Technical Equipments”. The national machine tool enterprises have won only three such awards, and the enterprises in Hubei Province only have one heavy family.
Lin believes that the significance of these technological innovations is very important. First, it can greatly improve the level of machine tool design and production in China, and secondly, realize new breakthroughs in key technologies, replace imports, and achieve national brands' checks and balances on foreign brands. Just as the competition between Lekai Film and Kodak Fuji was not only in the sense of products, but also a constraint on existence, it is the breaking of the competition pattern.

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