On the Natural Frequencies of High-Speed Spindles with Angular Contact Bearings

Wang, K W; Shin, Yung C.; Chen, C H

doi:10.1243/pime_proc_1991_205_105_02

Cited by 22 publications

(7 citation statements)

References 6 publications

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“…Harsha et al 21 developed a biologically inspired topology optimization method for stiffness design that can be applied to optimize the structure of the bearing. Wang et al 22 constructed spindle model to study the bearing stiffness and the natural frequencies of the system. Chen et al 23,24 developed a system model to analyze the dynamics of high-speed spindle.…”

Section: Introductionmentioning

confidence: 99%

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Effects of rolling bearing configuration on stiffness of machine tool spindle

Yang

Chen²,

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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Rolling bearings are widely used in the complex mechanical systems as important components. With the advancement in the manufacturing technology, the requirements of high-performance machining tool became essential. A bearing is one of the most important components of spindle, and it is a crucial factor in determining the overall quality. The configuration of bearings of spindle is the key problem during high-performance spindle design, which influences the performance of spindle, especially stiffness. This paper aims to develop a method to analyze various spindle stiffnesses with different configurations of bearing to support the optimization of spindle. Firstly, a quasi-static model is established to solve stiffness matrix of bearing, and then a spindle-bearing system mathematical model is established. Secondly, the stiffness matrix of bearing is added into the whole system to form an integrated spindle-bearings model. Finally, the spindle stiffness with different bearing configurations are analyzed. The results indicate that the number of bearings influences the spindle radial stiffness and bearing direction affects the spindle axial stiffness. Once the number and direction are specified, reasonable pre-load method, shorter overhang, and proper span can greatly improve the spindle dynamic characteristics. In addition, an experimental spindle is designed and fabricated to test various axial stiffnesses with different bearing configurations, and stiffness characteristics of commonly used bearing configurations are summarized from the experimental results and provide useful guide for the spindle design.

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Section: Introductionmentioning

confidence: 99%

“…Wang et al. 22 constructed spindle model to study the bearing stiffness and the natural frequencies of the system. Chen et al.…”

Section: Introductionmentioning

confidence: 99%

Effects of rolling bearing configuration on stiffness of machine tool spindle

Yang

Chen²,

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Abroad, Khandeparkar related scholars also locate the machine tool design early stages, use the virtual manufacturing technology to simulate the machine tool processing using's actual process, at the same time combine with CAE technology. The finite element analysis method has been carried on the machine tool key components, which can study the machine tool junction surface wedge-caulking features, so as to make the machine tool design's main performance indicators to meet the technical requirements [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

NC Wedge-Caulking Special Machine Tool Design

Wang

2014

MSF

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With mechanical processing requirements' development direction translates to highprecision, high efficiency, high quality, intelligence and specialty etc. Wedge-caulking's processinghas a lot of problems in our country energy industry market , the problems mainly show lowefficiency, poor accuracy, product quality and technical indicators are difficult to guarantee. Thispaper developed a high precision, high efficiency, intelligence, high quality and specialty machinetool, the enterprise practice results show that the NC wedge-caulking special machine tool provide thetechnical support and equipment protection for our country motor manufacturing. It has the very goodpractical value.

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“…The hybrid ceramic ball bearing are widely used in machine tool for its high standard,wear fatigue, low heat, uniform tightness [3,4,5],high stiffness,long life.The analysis of dynamic characteristics include the inner ring movement ,contact stress ,contact angle change ,centrifual force and gyroscopic moment ,ratio of revolution ,stiffness change and so on,meanwhile,considering the affect of rotational speed and load to bearing characteristics [6] .Various investigations have been done to study the high speed angular contact bearing, some basic facts have been acknowledged .It is gardually apparent that the influence of centrifual force and gyroscopic moment with the increasing rotational speed , so leading to the contact angle of outer ring is lower, but the inner ring is higher, radial stiffness decreases , however, it is useful to the bearing radial stiffness with the increasing axial preload [7,8,9] . Because of the time of hybrid ceramic ball bearing is shorter than steel ball bearing, the contact stress , axial and radial load, preload are seldomly studied [10].The article studies on the dynamic characteristics of hybrid ceramic ball bearing by analysis calculation and experiment verification [11,12].Taking the same type of steel bearing to analyze can provide reliable evidences for the optimum design.…”

Section: Introductionmentioning

confidence: 99%

The characteristics of hybrid ceramic ball bearing for high-speed spindle

Liu

Zhang

et al. 2009

2009 International Conference on Mechatronics and Automation

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The fine characteristics of hybrid ceramic ball bearing are introduced by Herz contact stress theroy, meanwhile , researching into the contact stress,axial and radial preload of hybrid ceramic ball bearing. Also , taking the CNC machine tool spindle with hybrid ceramic ball bearings for example , having the reference to the same type of completely steel bearing, the thesis introduces the position of the bearing in electric spindle and the contaction motheds between front and back bearing , analyzes some key parameters that affect the preload , and at the same time gets the heat,vibration by many repeated experiments at different rotational speed, axial and radial preload .Compared with the same type of steel bearing ,the significant variation of maximum contact stress, axial and radial stiffness are gained. The results show that hybrid ceramic ball bearing is more suitable for high speed and heavy load electric spindle for its low heat, high stiffness.This thesis researches into the dynamic characteristics of hybrid ceramic ball bearing through analysis calculation and experiment verification ,therefore, the data is reliable ,which also lays a solid speciality foundation to professional and technical person for their bearing and machine tool spindle optimum design > test and some other aspects.

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On the Natural Frequencies of High-Speed Spindles with Angular Contact Bearings

Cited by 22 publications

References 6 publications

Effects of rolling bearing configuration on stiffness of machine tool spindle

Effects of rolling bearing configuration on stiffness of machine tool spindle

NC Wedge-Caulking Special Machine Tool Design

The characteristics of hybrid ceramic ball bearing for high-speed spindle

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