CCTV News:The technical level of high-end CNC machine tools is one of the standards to measure a country’s core manufacturing capability. In 2022, China Machine Tool won the first place in the world with an output of 182.3 billion yuan. However, being big but not strong is the biggest bottleneck restricting the development of machine tools in China. How to achieve a breakthrough in high-end machine tool manufacturing?
This is the user distribution map of Shenyang Machine Tool released this month, covering many key industries such as energy, rail transit, automobile and construction machinery. On the day of the reporter’s investigation, Dong Lingyun, Minister of Strategy and Operation Department of Shenyang Machine Tool, was about to pay a return visit to users with the technical service department on the experience of using Longmen series new products.
Thanks to the substantial improvement of core technical indicators, Longmen series of new products have been highly recognized by users. The reporter learned that in the past year, Shenyang Machine Tool set up 35 scientific research teams to overcome more than 10 core key technologies such as the design and manufacture of high-end CNC machine tools, and R&D investment accounted for 11.9% of total sales revenue. Dong Lingyun has worked in Shenyang Machine Tool for 30 years. In his impression, the company’s R&D investment in 2022 is the highest.
Break through 0.01 mm, core key technologies continue to surpass
Increasing the spindle speed can improve the working efficiency, machining accuracy, stability and reliability of the machine tool, which are also several important indicators to judge whether the machine tool is high-end. At present, in terms of machining accuracy, the Longmen series products of Shenyang Machine Tool have successfully crossed the industry threshold of 0.01 mm.
In the production workshop, the reporter met Yan Haoming, the project chief engineer of Longmen Machine Tool series products, who was testing the 35th guideway test piece on the new product. Guide rail is one of the most easily worn core components on machine tools, and its quality directly affects the machining accuracy of machine tools. At present, most domestic quenching technologies can only process parts with a length of 2 meters, but Yan Haoming and his team successfully challenged the quenching of parts with a length of 11 meters.
Yan Haoming told reporters that the positioning accuracy of this large-volume gantry machine tool in the world reaches 0.01 mm, which belongs to the precision level. At present, the Longmen series products of Shenyang Machine Tool have successfully crossed the industry threshold of 0.01 mm. At this stage, they are constantly improving the manufacturing level of core components to make machine tools more stable and reliable.
Numerical control system is the key core component of numerical control machine tool, which is responsible for the coordination of various actions during the operation of the machine tool. The CNC system independently developed by Shenyang Machine Tool has reached the world advanced level in some functions.
Make up the shortcomings and increase the capacity to help the high-end machine tool industry get rid of difficulties
During the interview with Shenyang Machine Tool, the reporter also found that the factory now has to control the production of machine tools in real time every day, work overtime to ensure that orders are delivered on time, and even take three shifts for key projects. However, it is hard to imagine that a few years ago, this enterprise almost went bankrupt.
Shenyang Machine Tool has always been the vanguard of China machine tool industry, and its products and technologies represent the overall development level of China’s machine tool industry. This machine tool is the first lathe developed by Chinese himself. It once appeared on 2 yuan paper money published in 1960, commonly known as "Turner’s two yuan".
In 2011, Shenyang Machine Tool ranked first in the global machine tool list with sales of 18 billion yuan. Unexpectedly, the global machine tool industry market has become saturated. At this time, foreign machine tool industry began to develop and reserve new technologies for high-end machine tools, and China machine tool industry fell into the "low-end trap". In 2018, Shenyang Machine Tool was in high debt and fell into bankruptcy crisis.
In order to help Shenyang Machine Tool out of the predicament, the state, provinces and municipalities have successively issued policy documents to support the reform and development of Shenyang Machine Tool. The 22nd meeting of the leading group of state-owned enterprises in the State Council reviewed and approved the Comprehensive Reform Plan of Shenyang Machine Tool Factory, and incorporated Shenyang Machine Tool into the pilot unit of comprehensive reform of state-owned enterprises in Northeast China.
The implementation of the comprehensive reform plan has played a positive role in solving the dilemma of Shenyang machine tools.
In 2019, with the support of national ministries and commissions and provincial and municipal governments, General Technology Group implemented strategic restructuring of Shenyang Machine Tool. To meet the needs of national key fields, Shenyang Machine Tool has implemented a three-step strategy of "supplementing the shortcomings, improving the level, and arming itself", supplementing the manufacturing capacity and technological shortcomings, upgrading the grade and level of core equipment, and upgrading the existing equipment by relying on its own technology and core equipment. After reorganization, Shenyang Machine Tool has turned losses into difficulties within three years.
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