中国科学院机构知识库网格系统: 检索

Study on the 2D Equivalent Simulation Model of Bearing and Spindle for Precision Machine Tools 期刊论文 OAI收割
MACHINES, 2023, 卷号: 11, 期号: 4, 页码: 16
作者: Xiu, Shijun; Li, Jibo; Chen, Xiangjun; Xia, Yifan; Wang, Pei

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收藏 | 浏览/下载：13/0 | 提交时间：2024/01/07

angular contact ball bearing spindle 2D equivalent model finite element analysis axial stiffness contact stress

Characteristics and mechanism of surface damage of hybrid ceramic ball bearings for high-precision machine tool 期刊论文 OAI收割
ENGINEERING FAILURE ANALYSIS, 2022, 卷号: 142, 页码: 11
作者: Zhang, Xiaochen; Wu, Di; Xia, Zhuofan; Li, Yifeng; Wang, Jianqiu

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收藏 | 浏览/下载：24/0 | 提交时间：2023/05/09

Precision hybrid bearing Ceramic ball Performance degradation Surface deformation layer Rolling contact fatigue (RCF)

Numerical simulation and experimental testing of dynamic stiffness of angular contact ball bearing 期刊论文 OAI收割
Advances in Mechanical Engineering, 2018, 卷号: 10, 期号: 9, 页码: 1-14
作者: Luo HT(骆海涛); Fu J(富佳); Yu CS(于长帅); Liu GM(刘广明); Wang W(王巍)

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收藏 | 浏览/下载：40/0 | 提交时间：2018/12/01

Angular Contact Ball Bearing Numerical Simulation Experimental Testing Bearing Dynamic Stiffness

Investigation on the lubricity of self-lubricating ball bearings for cryogenic turbine pump 期刊论文 OAI收割
Tribology International, 2018, 卷号: 121, 页码: 45-53
作者: Miao, Xusheng; Hu M(胡明); Li, Aimin; Wang DS(王德生); Weng LJ(翁立军)

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收藏 | 浏览/下载：27/0 | 提交时间：2018/06/05

Rocket-turbopump Self-lubricating Ball Bearing Ptfe Transfer Film Lubricating Performance

A Design of Airborne Inertial Stabilized Platform Azimuth Shafting Structure 会议论文 OAI收割
Chongqing, PEOPLES R CHINA, 2017-05-27
作者: Li, Fen; Yang, Hongtao; Xu, Linfeng; Li, F (reprint author), Shaanxi Normal Univ, Xian 710119, Shaanxi, Peoples R China.

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收藏 | 浏览/下载：19/0 | 提交时间：2018/01/03

Stabilized Platform High Precision Azimuth Shafting Structure Dense Ball Bearing Shafting Modal Analysis

Study on the azimuth bearing scheme of a large Alt-azimuth telescope (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
作者: Wang H.; Dai S.; Zhang J.; Wang H.; Zhang J.

收藏 | 浏览/下载：38/0 | 提交时间：2013/03/25

The azimuth bearing schemes in typical large Alt-azimuth telescopes especially the 3.5-m APO telescope and the 4.1-m SOAR telescope were analyzed. A scheme of high-angular contacted thrust ball bearing integrated with a radial ball bearing was put forward. According to the Hertz contact theory the corresponding parameters were designed for engineering application. The static performance parameters within the range of 60 85 original contact angle were calculated. Compared with the traditional plane thrust ball bearing the results shows that the high-angular (80) contact thrust ball bearing has more benefits at bearing strength and rigidity for large telescope. The 1500mm diameter prototyping bearing shows good performance including the axial jitter is 0.009mm the radial jitter is 0.006mm the maximum starting torque without load is 30N·m and the load capacity is more than 30t which offers advanced technique path for the buildup of the high precision azimuth shafting and the whole telescope system. 2010 Copyright SPIE - The International Society for Optical Engineering.

Application of precision harmonic gear drive in focusing mechanism of space camera (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

A kind of precision harmonic gear drive in the focusing mechanism of space camera is studied which adopt external meshing complex wave transmission mode. Wave generator is combined with an elliptic cam and a flexible bearing around it. Flexspline is a structure of single wave with the same teeth. The output shaft is supported by a single cross-roller bearing. Ball screws connected the output shaft translate the rotational motion to the linear motion and drive the focusing mirror repeated moving along the linear guide. The output rigid wheel is connected with absolute encoder to detect displacement of focusing movement. It has the characteristics of big transmission ratio high precision compact structure high efficiency and smooth running etc. According to the practical application of this harmonic gear drive in the space camera the location relationship between the displacement of focusing structure and the focal plane movement is derived and the system error is analyzed its accuracy is tested with the open-loop control method. Experimental results show that transmission ratio of the instrument is 1:70 repeated positional accuracy is 2m which meet the requirements for use. 2010 SPIE.

Design and test of focusing mechanism of space camera (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, April 26, 2010 - April 29, 2010, Dalian, China
作者: Li Y.; Li Y.; Li Y.; Wang H.; Wang H.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

According to the focal depth and work environment of a space camera a focusing mechanism is designed which consists of precision screw ball transmission and linear bearing guidance and accuracy improving. The dynamic- strike- resistance adaptability to temperature and vacuum are considered into the reliable design method. Furthermore the linearity error the structure stability and the mechanism work situation in high and low temperature are tested. The result is that the linearity error of the mechanism is less than 0.003 mm and the sway error of vertical way and level way of the mirror is less than 20''. The linearity error of the mechanism and the sway error of the mirror remain unchanged after vibration test. The mechanism can work in the complex space environment. 2010 SPIE.

Design and analysis of power system of micro-electromechanical actuator (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
作者: Zhang J.; Zhang J.; Zhang J.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

In order to apply the electromechanical actuator to tactical mini-missiles maximum rotational speed of output shafts is greater than 250/s. Test results basically correspond to the requirement of technical indexes. It is proved that this analysis and design method is congruent with the design of micro-electromechanical actuators this paper researches on the key technology such as load-bearing ability the system bandwidth can reach 25.3Hz on the condition of no load and 23.4Hz on the condition of load thus the method is feasible. 2010 IEEE. rapidity and miniaturization of the micro-electromechanical actuator power system based on the ball screw. First according to specific technical indexes the power electromechanical time constant and the size of the motors are screened originally through theoretical analysis. Finally based on the characteristics of ball screw transmission load locus of the micro-electromechanical actuator dynamic system is theoretically analyzed and the optimum speed ratio is determined through parameter optimization. The results of the double closed loop controlled test on the principle prototype show: the system can operate normally with 2.5N.m hinge moment

Influence of processing medium on frictional wear properties of ball bearing steel prepared by laser surface melting coupled with bionic principles 期刊论文 OAI收割
Journal of Alloys and Compounds, 2010, 卷号: 505, 期号: 2, 页码: 801-807
作者: Zhou H; Wang CT; Guo QC; Yu JX; Wang MX(王明星)

收藏 | 浏览/下载：28/0 | 提交时间：2011/03/01

Ball Bearing Steel Biomimetic Laser Surface Melting Microstructure Microhardness Wear Behavior Biomimetic Nonsmooth Surface Thermal Fatigue Resistance Immersion Ion-Implantation Gcr15 Steel Cast-Iron Die Steel Behavior Deposition Adhesion Films