Identification research of dynamic and static analysis for high precision spindle
碩士 === 國立勤益科技大學 === 機械工程系 === 100 === In this study, a finite element method to investigate the impact of the spindle dynamic properties of spindle bearing preload. The aim of this study is to develop finite element model to predict the dynamic characteristics of spindle and hence evaluate the influ...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/39363261902363288328 |
| Summary: | 碩士 === 國立勤益科技大學 === 機械工程系 === 100 === In this study, a finite element method to investigate the impact of the spindle dynamic properties of spindle bearing preload. The aim of this study is to develop finite element model to predict the dynamic characteristics of spindle and hence evaluate the influence of the preload of the spindle bearings. To this purpose, a three dimensional spindle bearing model of a high speed spindle tool was created. In this model, the rolling interfaces with contact stiffness defined by Harris model were used to simulate the spindle bearing components.Using this model, the vibration mode that had a dominant influence on the dynamic stiffness was determined.The results of the finite element simulations reveal that spindle bearing with different preloads greatly affect the dynamic behavior of the spindle tool unit and hence the dynamic responses of the vertical column milling system. It is concluded that the preload of the spindle bearings is an important factor affecting the dynamic characteristics and machining performance of the machine tools
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