| 李建平， 许涛， 陈涛， 高琛， 陈玉立.新型角接触球轴承预紧装置设计[J].轻工机械,2023,41(5):60-66 |
| 新型角接触球轴承预紧装置设计 |
| Design of New Preload Device for Angular Contact Ball Bearings |
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| DOI：10.3969/j.issn.1005 2895.2023.05.009 |
| 中文关键词: 机床主轴 滚动轴承 预紧力 离心力 接触非线性 |
| 英文关键词:machine tool spindles rolling bearing preload centrifugal force contact nonlinearity |
| 基金项目:陕西省科技厅自然科学基金面上项目(2019JM 417)；陕西省教育厅服务地方专项科研计划项目（22JC026）。 |
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| 中文摘要: |
| 为实现轴承预紧的动态调节，课题组设计了一种新型的主轴轴承自调节预紧装置。该装置采用对称性结构，可通过调整离心力的输出方向，来满足同向和背对背安装轴承的预紧力调节需求；并且能根据主轴转速变化，利用质量元件产生的离心力自动调整轴承预紧力；通过设计轴承变预载系统，对装置的运行机理进行了分析；利用ANSYS有限元仿真分析软件对装置进行接触非线性分析，研究了装置不同转速时的动态预紧性能。研究结果表明：该装置既能在低速时提供大的预紧力，又能在高速时以二次函数关系式的形式自动减少轴承的预载，具有很好的预紧性能。课题组的研究为轴承预紧结构的设计提供了新思路。 |
| 英文摘要: |
| In order to achieve dynamic adjustment of the bearing preload, a new structure of self adjusting preload device for spindle bearings was designed. The symmetrical structure was adopted in construction of the device that can meet the preload adjustment requirements of both coaxial and back to back mounted bearings by adjusting the output direction of the centrifugal force; according to changes in spindle speed, automatic adjustment of the bearing preload by using the centrifugal force generated by the mass element. The operating mechanism of the device was analyzed by designing a bearing variable preload system. The dynamic preload performance of the device at different speeds was investigated using ANSYS finite element simulation analysis software for contact non linearity analysis. The research results show that the device can provide a large preload at low speeds and automatically reduce the preload of the bearing at high speeds in the form of a quadratic relationship with good preload performance. The study provides a new idea for the design of bearing preload structures. |
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