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An Elastic Deformation Model of High-speed Spindle Units
Igor Aexeevich Zverev,In-Ung Eun,Young-Kug Hwang,Won Jee Chung,Choon Man Lee 한국정밀공학회 2006 International Journal of Precision Engineering and Vol.7 No.3
This paper presents an elastic deformation model of a spindle unit (S/U), which takes into account the non-linear properties of high-speed ball bearings (particularly the effect of high rotational speed). For this, a software for the estimation of the S/U elastic deformation properties was developed and intended for use by S/U designers. A computer aided analysis of the model using the developed software was carried out and experiments showed the significant effect of rotational speed, cutting load and bearing axial preload, and showed some new phenomena, from which the criteria for the choice of bearing axial preload is given.
Simulation of Run-out caused by Imperfection of Ball Bearing for High-speed Spindle Units
Igor Aexeevich Zverev,In-Ung Eun,Won-Jee Chung,Choon-Man Lee 한국정밀공학회 2006 International Journal of Precision Engineering and Vol.7 No.3
For the purpose to improve and to automate designing of high-speed spindle units (SU's), we have developed the mathematical models and software to estimate SU performance characteristics, including the run-out of spindles running on ball bearings. In order to understand better the mechanics of high-speed SUs, the dynamic interaction of ball bearings and SU, and the influence of the bearing imperfections and SU's operational conditions on the run-out, we have carried out computer simulation and experimental studies. Through the study of SU's, we have found out that run-out of SU can vary drastically with variation of rpm. The influences of rotation speed and of accuracy parameters of bearings on the SU accuracy have the greatest importance. The influence of bearing preload has a secondary importance. Comparison of the results of these studies has demonstrated adequacy of the models and software developed to the real SU's.
An Elastic Deformation Model of High-speed Spindle Units
Zverev Igor Aexeevich,Eun In-Ung,Hwang Young-Kug,Chung Won-Jee,Lee Choon-Man Korean Society for Precision Engineering 2006 International Journal of Precision Engineering and Vol.7 No.3
This paper presents an elastic deformation model of a spindle unit (S/U), which takes into account the non-linear properties of high-speed ball bearings (particularly the effect of high rotational speed). For this, a software for the estimation of the S/U elastic deformation properties was developed and intended for use by S/U designers. A computer aided analysis of the model using the developed software was carried out and experiments showed the significant effect of rotational speed, cutting load and bearing axial preload, and showed some new phenomena, from which the criteria for the choice of bearing axial preload is given.
Simulation of Run-out caused by Imperfection of Ball Bearing for High-speed Spindle Units
Zverev Igor Aexeevich,Eun In-Ung,Chung Won-Jee,Lee Choon-Man Korean Society for Precision Engineering 2006 International Journal of Precision Engineering and Vol.7 No.3
For the purpose to improve and to automate designing of high-speed spindle units (SU's), we have developed the mathematical models and software to estimate SU performance characteristics, including the run-out of spindles running on ball bearings. In order to understand better the mechanics of high-speed SUs, the dynamic interaction of ball bearings and SU, and the influence of the bearing imperfections and SU's operational conditions on the run-out, we have carried out computer simulation and experimental studies. Through the study of SU's, we have found out that run-out of SU can vary drastically with variation of rpm. The influences of rotation speed and of accuracy parameters of bearings on the SU accuracy have the greatest importance. The influence of bearing preload has a secondary importance. Comparison of the results of these studies has demonstrated adequacy of the models and software developed to the real SU's.
Multicriteria Optimization of Spindle Units
Lim Sang-Heon,Lee Choon-Man,Zverev Igor Aexeevich Korean Society for Precision Engineering 2006 International Journal of Precision Engineering and Vol.7 No.4
The quality of precision spindle units (S/Us) running on rolling bearings depends strongly on their structural parameters, such as the configuration and geometry of the S/U elements and bearing preloads. When S/Us are designed, their parameters should be optimized to improve the performance characteristics. However, it is practically impossible to state perfectly a general criterion function for S/U quality. Therefore, we propose to use a multicriteria optimization based on the parameter space investigation (PSI) method We demonstrate the efficiency of the proposed method using the optimization results of high-speed S/Us.
Multicriteria Optimization of Spindle Units
Sang Heon Lim,Choon Man Lee,Igor Aexeevich Zverev 한국정밀공학회 2006 International Journal of Precision Engineering and Vol.7 No.4
The quality of precision spindle units (S/Us) running on rolling bearings depends strongly on their structural parameters, such as the configuration and geometry of the S/U elements and bearing preloads. When S/Us are designed, their parameters should be optimized to improve the performance characteristics. However, it is practically impossible to state perfectly a general criterion function for S/U quality. Therefore, we propose to use a multicriteria optimization based on the parameter space investigation (PSI) method. We demonstrate the efficiency of the proposed method using the optimization results of high-speed S/Us.