Development trend of linear guide and ball screw

China's rolling function parts industry production is not concentrated, a single product variety, low gold content, there is no one in the international influential brands, has become the bottleneck of the development of CNC machine tools. Therefore, it is necessary to speed up the industrialization of rolling function components in china.

Industry status

At present, there are 50 rolling functional components manufacturing enterprises in China (excluding Taiwan), the research institutes and colleges and universities have a total of 3, and the affiliated research institutions of enterprises are 3. The production of ball screw enterprises have 48, the annual output value of up to 650 million yuan, the production of rolling linear guide enterprises have a total of 6 (of which the production of ball screws at the same time), the annual output value of up to $150 million 4. In the 50 enterprises, the production scale is big, the craft equipment is complete, the output is big, the variety many enterprises have 6, the remaining majority enterprise scale is small, the output is not high, the product variety is unitary.

Domestic rolling components in the equipment manufacturing industry has been applied in many fields: from "Fengyun No. two" satellite, missile guidance systems, spacecraft space transmission device, radar device, airport equipment, and various types of CNC machine tools, IT industry, metallurgical equipment, railway vehicles, nuclear power plant, plastic machinery, medical equipment etc..

From a global perspective, the rolling components industry in China is the country with the largest number of manufacturers, but the production is not concentrated, unreasonable distribution, total output and output value is not high, in addition to some of the products a few key enterprises reached the international level, the majority of enterprises only in the production of low-end products, and a single species, low gold content so far, no one has influence in the world famous brand, is a listed company.

Overseas development trend

The overall level of foreign rolling parts industry and product development trends have the following characteristics:

The production scale is large, the information management level is high, and the cost and the speed of the large-scale and intensive manufacturing are provided, and a series of products which can meet the individual needs of users are provided.

- strong corporate capital, the speed of industrialization.

Strong product originality, new product development speed, very responsive to market demand, the introduction of a number of times each year with the era of independent intellectual property rights of new products, and quickly apply for patents.

High level of technology, high rate of equipment, high production efficiency, stable product quality.

With advanced testing equipment and product performance testing equipment for mass production of products and new product development to provide quality assurance, with test data and performance curve to win the trust of users.

Not only to provide users with the necessary hardware products, but also to provide users with software solutions.

In the development of new products for rolling function components:

Manufacturing technology and equipment for batch production of precision high speed ball screw.

High speed, high rigidity, low noise precision rolling linear guide rail.

According to the needs of the development of intelligent, composite, mechanical and electrical integration of high-performance rolling feature components products.

High precision and high rigidity roller linear guide rail for heavy NC machine tools.

- develop rolling features green products.

To improve the manufacturing process:

The development of new materials and thermal processes and equipment to meet the requirements of dimensional stability, reliability, easy molding and production efficiency.

Ball screw precision cold rolling technology and equipment localization, P3 class of ball screw under the promotion of cold rolling process.

Introduction and digestion and absorption of "CNC precision whirlwind hard milling" technology, equipment localization so that the following class P3 whirlwind milling method to replace the thread grinding.

The optimum design of ball back device and the industrialization of one shot forming technology.

Improving the profile accuracy of raceway.