A Chinese high level of imported bearing ratio is small

China's best bearing equipment, even if exports abroad, also used in ordinary bearing production line; Mainland China some foreign and joint bearing processing enterprises to buy domestic bearing equipment, also, it is mainly used for low-grade bearing production line. So far, China's imports of bearing equipment high proportion is very small, partly because of the high-end imported bearing equipment price is generally higher than the price of domestic bearing equipment. The main reason is that most of the domestic production of bearing with low precision and efficiency requirement, to introduce better level of imported bearing equipment requirements is not particularly strong. If we want to do something in the precision bearing competition market, if we are determined to undermine the medium-to-high grade bearing market capacity, then we must know that the world's best bearing production line what equipment used? The high precision bearing production line is what kind of process? Compared with foreign advanced bearing production enterprises, our bearing product manufacturing level and the gap in where? Do the high quality of wafangdian bearing products, to a certain extent, to do precision and stability of the products. The stability of the product production, cannot leave the advanced bearing equipment. Abroad in many countries the practice of manufacturing high quality bearing is small, it is indisputable fact. This article is limited to the space, just in order to introduce the world's most advanced the development of ultra-precision technology. 1. The most advanced ultra precision mechanical transmission system should use servo control, servo control system, make can be controlled in the process of superfinishing process parameters, because of the servo system control precision highest. Servo system as the core of the structure is the most simple mechanical structure, the most advanced mechanical structure is the most simple mechanical structure. German Thiem and Hynix bearing is Star series of ultra precision machine tools, using oil clamping swing servo control system, the vibration of the rock and stone frequency available pressure control; In addition, bearing star superfinishing machine the workpiece axis adopt servo motor control, make workpiece speed can reach more than 10000 revolutions per minute. Mechanical parts of the machine structure is greatly simplified, minimize the mechanical transmission chain. As a result, the vibration of the machine are minimized. Due to the workpiece spindle speed, swing axle frequency, stone material parameters such as pressure range, and precise control, so it can be to create the highest level of bearing ring at the same time meet the requirements of the latest bearing manufacturing technology. Technology. 2. Best of ultra-precision machine tool positioning structure should be hydraulic floating support structure, when in work place for machining, locate the original film floating bearing ring spinning, the supporting stiffness than rigid structure ceramic support also is very strong, the workpiece will be processed by the corresponding orientation, surface error will be absorbed, will not affect the positioning accuracy and hyperfine results, even in the workpiece speed is high, workpiece positioning surface will not scratch. Thielenhaus hydraulic floating mandrel and cooling oil is of the same type of oil, and the characteristic of oil and oil environment put forward higher requirements.