Results 61 to 70 of about 38,585 (217)

Kinematic analysis of complex gear mechanisms [PDF]

, 2010
This paper presents a general kinematic analysis method for complex gear mechanisms. This approach involves the null-space of the adjacency matrix associated with the graph of the mechanism weighted by complex coecients.
Alazard, Daniel, Penaud, Julie
core  

Dynamic contact and stiffness characteristic analysis of angular contact ball bearings under combined external loads

Journal of Low Frequency Noise, Vibration and Active Control
A nonlinear dynamic model of angular contact ball bearing under combined external loads is established based on the nonlinear elastic Hertz contact theory and raceless control theory.
Zhen Li, Qingshan Wang, Ruihua Wang, Bin Qin   +3 more
doaj   +1 more source

Research on Ultimate Bearing Capacity of Angular Contact Ball Bearings Considering Misalignment Angles

Jixie chuandong, 2023
Considering misalignment angles will appear during the actual installation of angular contact ball bearings and truncated contact ellipse will be produced due to bearing excessive external load, a bearing limit bearing capacity analysis model containing ...
Wang Huijie, Qiu Ming, Li Junxing, Liu Zhiwei, Yang Chuanmeng   +4 more
doaj  

Analysis of the Ball Load in Angular Contact Ball Bearings during Operations.

Journal of the Japan Society for Precision Engineering, 2001
Spindles used in machine tools, especially machining centers, must operate at high speeds with high stiffness and low temperature rise in order to achieve improvements in productivity and accuracy of the machine. Usually, preloaded angular contact ball bearings are used to satisfy these requirements.
Kenji FUJII, Shigeo SHIMIZU, Masatsugu MORI   +2 more
openaire   +2 more sources

Estimation of bearing contact angle in-situ by X-ray kinematography [PDF]

, 1982
The mounted, preloaded contact angle of the structural bearings in the assembled design mechanical assembly was measured. A modification of the Turns method is presented, based upon the clarity and definition of moving parts achieved with X-ray technique
Fowler, P. H., Manders, F.
core   +1 more source

Effect of cage design on characteristics of high-speed-jet-lubricated 35-millimeter-bore ball bearing [PDF]

Parametric tests were conducted with a 35 mm bore angular contact ball bearing with a double outer land guided cage. Provisions were made for jet lubrication and outer-ring cooling of the bearing.
Pinel, S. I., Schuller, F. T., Signer, H. R.   +2 more
core   +1 more source

Analytical Method for Predicting Wear Life of Angular Contact Ball Bearings Under Variable Loading Based on Mixed Lubrication

Lubricants
In aerospace technology, angular contact ball bearings are required to exhibit extremely high operational precision, necessitating real-time monitoring of their wear status to conduct pre-failure analysis.
Xiaoyan Mu, Gong Cheng, Shaojiang Dong, Liang Yi, Hongliang Liu   +4 more
doaj   +1 more source

Fatigue life of high-speed ball bearings with silicon nitride balls [PDF]

Hot-pressed silicon nitride was evaluated as a rolling-element bearing material. The five-ball fatigue tester was used to test 12.7-mm- diameter silicon nitride balls at maximum Hertz stresses ranging from 4.27 x 10 to the 9th power n/sq m to 6.21 x 10 ...
Parker, R. J., Zaretsky, E. V.
core   +1 more source

Thermal Error Modelling of a CNC Machine Tool Feed Drive System using FEA Method [PDF]

, 2016
Recirculating ball screw systems are commonly used in machine tools and are one of the major heat sources which cause considerable thermal drift in CNC machine tools.
Abuaniza, Ayman, Fletcher, Simon, Longstaff, Andrew P., Mian, Naeem S.   +3 more
core  

Study of ball bearing torque under elastohydrodynamic lubrication [PDF]

Spinning and rolling torques were measured in an angular-contact ball bearing with and without a cage under several lubrication regimes in a modified NASA spinning torque apparatus.
Allen, C. W., Townsend, D. P., Zaretsky, E. V.   +2 more
core   +1 more source