The present situation and progress in the study of needle bearing performance

The present situation and progress in the study of needle bearing performance release date: 2019 - 06 - 04 14:27:54 click: 88 for a long time, many scholars at home and abroad have been focused on and committed to the research of bearing performance, and obtained many achievements. To explore the stability of the bearing system, found that the bearing index method to study the variability of the velocity fluctuations on the bearing dynamic performance; Louilsil ! ) With spectrum analysis, frequency response and phase trajectory, nonlinear analysis to the influence of speed trace changes will lead to the phase space, higher order Poincare mapping and Lyapunov wan le club for major changes: dragon 'is proposed with Dfing god oscillator phase track diagram method to detect early bearing faults and Lyapunov index method; Jiang wei 4 with the theory of quasi dynamic analysis of angular contact ball bearing contact force, contact Angle, the change of the roll than state, think bearing all the performance parameters of the present a significant nonlinear variation characteristics, and found that steel ball bearings and ceramic shaft by the dynamic characteristic parameters of the bearing with different stability li-qin wang, zhao chunjian 16 and 151 zhi-xian he respectively to study the interaction model of bearing parts and bearing system dynamics behavior; Amoi tao (such as - 4. The dynamic analysis of bearing friction torque and vibration; Xu Zhidong! 8] No axial load and temperature is discussed under the condition of bearing friction torque fluctuation characteristic; Douglasl9] Put forward some kind of polyethylene material stratification mechanism of rolling bearing sliding wear, to describe the wear debris of biological activity; Guan-yu Lin [ 20] Illustrates the effects of silicone oil lubrication of ball bearing lubrication mechanism, and studied under different vacuum degree and speed of bearing friction torque; Saad21 using acoustic emission technology discussed the geometry size of roller bearing surface defect identification method; New [Huang Dui 2] By dry friction at high speed experiment found the ceramic ball is given priority to with surface crack and surface strip, the failure mechanism of raceway damage present fatigue crack, a variety of forms such as pitting and plough mark; Abbasion [ 231 with the theory of wavelet and support vector machine (SVM) recommended a fault diagnosis method of the bearing system; There will be a new [Yang 24] Considering bearing running condition load distribution, impact pulse sequence of accident and injury parameters such as position change and environmental noise influence on vibration characteristics, set up inner ring vibration model of local damage status; Antonil25] Harmonic analysis was carried out on the shaft bearing vibration signal, the use of the probability density spectrum and the standard deviation for statistical concepts such as probability density; Uedal261 proposed the concept of increased longevity and factor analysis, in order to improve the pollution under the condition of lubrication bearing life; Guo Lei [ 27] And Guol28) Points don't bearing defects for the multi-scale analysis and wavelet support vector machine (SVM) classification and chaos identification; Min-ping jia 1291 analysis of the bearing fault signal cycle; Jiang Lin [ 30) With acoustic and modern signal analysis theory to study the non-contact multi-sensor acoustic diagnostic method, to evaluate the early failure of the bearing; Wang Jiu root 3] Using group theory will affect the parameters of the bearing noise is divided into geometric, material, mechanics, kinematics, dynamics, tribology and acoustic characteristics such as parameter group; Sujeet32] This paper introduces the - For relative motion on the surface of the silicon miniature ball bearings, to reduce the micro mechanical and nano mechanical wear and tear, and discusses the influence factors of bearing life. The study found that the bearing performance with nonlinear, variability [ 5 - 17] And chaos 18; 18-331, diversity 22 and 23 - influencing factors of complexity 32) , how to evaluate the performance of the rolling bearing has become the bearing industry and related industry is an urgent need to solve the problem. A: no! Next article: the importance of bearings for machine tools