The basic requirement of bearing vibration

Bearing ( 轴承) Vibration is the basic requirement of vibration is the basic requirements, in summary sentence: measurements to the prospective, listening to the noise ( Db ( dB) ) To be clear. To do this, must pay attention to the following aspects: 1, the bearing 轴承) Vibration is its lower vibration is based. 2, the spindle rotation accuracy is higher, the low noise ( Db ( dB) ) , especially the mute bearing ( 轴承) Typically to vibration, the spindle's gyration accuracy control ( 控制) The radial runout error & lt; 1 um, the axial runout error & lt; 3 um, very high accuracy of spindle is the assurance of measurements believable. 3, the spindle rigidity, good spindle rigidity, mean value measurement stability and repeatability. 4, the spindle rotation to flexible light, can't block phenomenon, the spindle rotation flexibility good vibration is high resolution, noise, Db ( dB) ) That sounds clear realistic. Thin wall bearing manufacturer for bearing low friction torque, high rigidity, good rotation accuracy, using the small diameter steel ball. The use of hollow shaft, ensure the lightweight and wiring of the space. Thin wall type bearing has realized the extremely thin cross section of the bearing, also has realized the product miniaturization, lightweight. The diversity of products extends its application scope. 5, axial load and the center line of spindle is better alignment, radial load bearing must be ( 轴承) Measured bearing geometric center of the circle, to ensure smooth operation. Thin wall bearings manufacturer of angular contact ball bearings can match the optimal number of balls and the contact Angle of 30 °. They support radial load is higher than contact bearing deep groove ball bearings or four o 'clock, and can support comes from the same direction of axial load. In view of the special demand, 6, electronic measurement ( cè liáng) Instrument had a better ability to resist dry approach, as the bearing, 轴承) The improvement of quality, vibration, 振动) Signal becomes more and more small, especially the mute bearing, more weak vibration signals, the anti-jamming performance of electronic devices, 兴能) Put forward higher requirements. 7, electronic measuring instrument ( 设备) The calibration to correct, measuring value to true, neither big nor shrink. 8, sensors, the amplitude frequency characteristics in 50 hz to 10 KHZ range ( fàn wéi) In a flat. Five, the bearing ( 轴承) Vibration is the development trend of current China closed vibration is mostly manual operation, as the testing technology ( 技术) The development and the improvement of the bearing vibration theory, the future of the vibration is toward automation and intelligent direction. Automation refers to the bearing materials automatic feeding, automatic reverse, automatic multi-point test. To do this is not unattainable, as a matter of fact, semi-automatic vibration has been developed and put into use, but to develop perfect automation vibration, there is still a long way to go. Intelligent vibration is to solve the basic problem is how to automatically identify bearing manufacturing defect. Lead to bearing vibration is big problems, circle or outer ring? The rolling element or oil? Such as vibration can automatically recognize this, the bearing manufacturers ( Also known as: the manufacturers) Quality control ( Mass) Is the Gospel. It is a pity that although many people in exploring this problem, but so far, still no successful cases in the whole world, the key reason is bearing vibration theory is not perfect, the existing mathematical model of bearing vibration ( 模型) Have some limitations. Analysis of the characteristics of the bearing will help further our understanding of the essence of vibration frequency, time domain and frequency domain signal analysis method ( 方法) Convenience is provided for the study of the bearing vibration signal, using them to develop intelligent vibration is still in the test phase. A: application scheme of six kinds of bearing lubrication next article: bearing lubrication. The role of bearing lubrication