为了延长徐州SKF轴承的使用寿命,安装是必不可少的一步。如何提供安装精度直接影响轴承的使用寿命。因此,在安装轴承之前,首先要确定轴承的安装精度,然后寻找提高轴承安装精度的方法。
In order to prolong the service life of Xuzhou SKF bearings, installation is an indispensable step. How to provide installation accuracy directly affects the service life of bearings. Therefore, before installing bearings, we should first determine the installation accuracy of bearings, and then find ways to improve the installation accuracy of bearings.
(1)测量轴和轴承座孔的尺寸,以确定匹配精度(精度)。匹配要求如下:内环与轴采用过盈配合,过盈量为0~+4(轻载,高精度为0);外环与徐州SKF轴承座孔采用过盈配合,过盈量为0~+6(但在FR处采用角接触球轴承时,过盈量也会增加)。硒结束)。
(1) Measure the dimensi*** of the shaft and bearing seat holes to determine the matching accuracy (accuracy). The matching requirements are as follows: interference fit is adopted for inner ring and shaft, and the interference amount is 0 ~+4 (light load, high precision is 0); interference fit is used for outer ring and Xuzhou SKF bearing seat hole, and the interference amount is 0 ~+6 (but when angular contact ball bearing is used at FR, the interference amount will also increase). Selenium ends.
(2)安装轴固定端前轴承:用干净的煤油彻底清洗轴承。用润滑脂润滑时,将含有3-5个百分点润滑脂(性质:透明无色液体)的有*机*溶剂注入轴承进行脱脂和清洗,然后用油枪将定量润滑脂注入轴承(轴承空间体积的10-15个百分占比)。此方法检查***规定的预紧力是否发生了显著变化(即使徐州SKF轴承正确,预紧力也可能因配合或保持架变形而发生变化)。
(2) Install the front bearing of the fixed end of the shaft: clean the bearing thoroughly with clean kerosene. When lubricated with grease, organic solvent containing 3-5% grease (nature: transparent and colorless liquid) is injected into the bearing for degreasing and cleaning, and then quantitative grease is injected into the bearing (10-15% of the space volume of the bearing) with an oil gun. This method checks whether the pre-tightening force stipulated by law has changed significantly (even if Xuzhou SKF bearings are correct, the pre-tightening force may also change due to matching or cage deformation).
(3)将进口轴承轴总成装入座孔:将座孔加热至20-30摄氏度,将轴承轴总成连续轻压入座孔,调整前盖,将前盖拧紧至0.02-0.05,以轴承座外端为基准。当刀头接触轴颈表面时,用转轴测量其跳动量,刻度盘误差小于10。头部位于轴上,与后排座椅孔的内表面接触。徐州SKF轴承座前后座孔的同轴度由转轴测量。
(3) Install the imported bearing shaft assembly into the seat hole: heat the seat hole to 20-30 degrees Celsius, press the bearing shaft assembly into the seat hole continuously and lightly, adjust the front cover, tighten the front cover to 0.02-0.05, and take the outer end of the bearing seat as the reference. When the cutter head contacts the surface of the journal, its runout is measured with a rotating shaft, and the error of the dial is less than 10. The head is located on the axle and contacts the inner surface of the rear seat hole. The coaxiality of front and rear seat holes of Xuzhou SKF bearing seat is measured by rotating shaft.
(4)自*由端轴承有选择地***在偏移位置,安装在轴承座后支撑位置,尽可能地偏移圆度和同轴度偏差。
(4) The self * end bearings are selectively positioned in the offset position and installed in the back support position of the bearing seat to offset the roundness and coaxiality deviation as far as possible.
在主机上安装轴承后,如果测量轴承主轴的径向跳动,可以发现每一个旋转的测量值都有一定的变化;连续测量时,可以发现在某一个旋转后,变化会近似地重复。
After the bearing is installed on the main engine, if the radial runout of the bearing spindle is measured, it can be found that the measured value of each rotation has a certain change; when continuous measurement, it can be found that after a certain rotation, the change will approximately repeat.
如果对徐州SKF轴承主轴施加适当的预紧力,转速将逐渐升高,接近工作转速。为了达到轴承的“磨合”效果,可以提高主轴旋转精度。
If proper preloading force is applied to Xuzhou SKF bearing spindle, the rotational speed will gradually increase, approaching the working speed. In order to achieve the "running-in" effect of bearings, the spindle rotation accuracy can be improved.
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