According to the recently announced “Twelfth Five-Year Development Plan for the Machine Tool Industry”, China's machine tool industry will realize a total industrial output value of RMB 800 billion by 2016. As the world's largest producer of machine tools, China is in a process of transition from big to strong. This transformation cannot be separated from the joint efforts of manufacturing companies and spare parts companies.

During the “Twelfth Five-Year Plan” period, the country’s strong investment in and support for the automotive, aerospace, wind power, and energy industries has also driven the market demand for the machine tool industry. The market also has a demand for processing centers that account for a large proportion of gold-cutting machine tools. Increased substantially. Among them, the vertical machining center has the largest output and accounts for most of the total output of the processing center. The domestic processing center selects the preferred domestic and foreign numerical control systems, functional components, and other supporting parts to speed up industrial upgrading and increase market share, but it is highly accurate. The machining center is still to be developed. The workbench needs to carry the workpiece and drive the workpiece to rotate together. Its bearing capacity and rotation accuracy will undoubtedly affect the processing effect. Rotary table bearing is one of the most important parts of the table, which directly determines the use performance of the table and the accuracy of the workpiece.

The relatively mature rotary table bearing arrangement is mainly composed of a set of precision cross roller bearing arrangement, while bearing axial, radial and overturning loads. This arrangement can reduce the axial height of the table, and greatly simplifies the structure of the turntable, avoids the loss of precision due to installation misalignment or the increased size of the machine due to the complicated structure, and high maintenance The cost, the use of precision crossed roller bearing integrated layout scheme is favored by its exquisite structure and high precision.

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