In recent years, some well-known foreign companies have followed the trend of the times and the direction of the development of the mainframe. The rolling functional components are developing in the direction of high speed, precision, heavy load, compound, intelligent and environmental protection. At present, the new products popular in the market are: hollow strong cold, linear speed 80~120m/min, high-speed precision ball screw pair; nut main drive high-speed linear drive device; intelligent roller linear guide pair, high stiffness of damper slide Heavy-duty roller linear guide pair; ball screw, ball spline, rolling linear guide integrated transmission; low-temperature high-speed ball screw pair for strong cooling of ball screw and nut; self-lubricating, maintenance-free Green scrolling feature products, etc.
China needs key development technologies
Science and technology are the driving force for the industrialization of functional components. At present, the rolling function component industry faces two major problems that need to be solved urgently: one is to rapidly develop high-performance, high-grade products to meet the industrialization needs of domestic high-end CNC machine tools. The second is to rapidly improve the level of manufacturing technology, start with innovative processes, improve the quality and production efficiency of mass production, shorten the manufacturing cycle, and launch a number of competitive brand-name products on this basis. Focusing on these two major issues, the key to industrialization is to increase investment in technology and capital. According to the development direction of high speed, precision, compound, intelligent and environmental protection, technologies that need to be developed include:
In terms of new product development for rolling features:
——Manufacturing technology and equipment for mass production of precision high-speed ball screw.
——High-speed, high-rigidity, low-noise precision rolling linear guide pair for linear motors.
——Developing intelligent, composite, mechatronic high-performance rolling function products according to the needs of the host.
——High precision, high stiffness roller linear guide pair for heavy duty CNC machine tools.
- Develop rolling features green products.
In terms of improving the manufacturing process:
-- Development of new materials and thermal processes and equipment that meet dimensional stability, reliability, formability and productivity requirements.
——The localization of precision cold rolling technology and equipment for ball screw, and the ball screw below P3 promotes the cold rolling process.
——Introduction and digestion and absorption of “CNC Precision Cyclone Hard Milling†technology, equipped with localization to replace the thread grinding by the cyclone milling method below P3.
——Optimized design of ball return device and industrialization of one-shot manufacturing technology.
- Related techniques to improve the accuracy of the raceway profile.
In summary, China's rolling functional component industry has a clear gap with its foreign counterparts in terms of development scale, business philosophy, and corporate management. This gap has seriously hindered the development of equipment manufacturing industry and revitalized the national industry. Very unfavorable.
It is hoped that the state can focus on supporting one or two key enterprises, so as to form an operation and manufacturing base integrating science, industry and trade as soon as possible. The manufacturing base should take the specialized production road, promote the scale by specialization; introduce advanced technology, and do independent innovation work on this basis; establish the technical center of the industry to manufacture efficient and practical and reliable special equipment for producing rolling functional components. And testing equipment.
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