The installation of precision machine tool bearings

Precision bearing due to the requirement of matching parts accuracy of precision bearing itself in 1 & mu; M, therefore require matching parts ( Shaft, bearing and end cover, collar, etc. ) Have high dimensional accuracy and shape accuracy, especially fitting surface accuracy to control inside and bearing the same level, it is crucial, and also the most easily overlooked. Must also pay attention to the matching precision bearing parts if not meet the above requirements, often makes precision bearing in times larger than the original bearing error occurred after installation, even more than 10 times error, completely not be precision bearing, the reason is that the error of the matching part is often not simply by adding up the error of the bearing, but added in different multiples enlarged. The methods of improving the precision for actual cooperate in order to improve the actual coordination accuracy of bearing installation, must not make bearing deformation measuring method and measuring tools, the bearing surface of the inner hole and cylindrical coordinate measure precision of the actual size, can be related to the inner diameter and outer diameter measuring project all be measured, and make a comprehensive analysis of measured data, based on this, according to the precision with a shaft with a hole the size of the bearing installation site. In the actual measurement with a shaft and the corresponding size and shape of the hole, should be the same as the measured bearing temperature conditions. In order to guarantee a higher actual cooperate effect, the surface of the shaft and hole and bearing are suitable, the roughness should be small as possible. When measuring above, should be on the bearing outer circle and inner hole, as well as the shaft and hole corresponding to the surface, near the sides of the assembly chamfering can respond in Ming direction of maximum deviation of two sets of tags, so that when the actual assembly, make suitable maximum deviation on the same position of the two parties, so after the assembly, the two sides to partially offset the deviation. Make directional signs, the purpose of the two groups is the deviation of the compensation can be considered, even if the rotation of supporting their precision is improved, and between the two bearing hole and trunnion coaxiality error to get part on both ends. To cooperate with the surface to surface strengthening measures, such as sandblasting processing, with a slightly larger diameter of column precision plug plug a hole, etc. , are beneficial to improve the fit precision. More precision bearing related information, please pay close attention to jiaxing bearing group sales co. , LTD's website.