Analysis and research on static and dynamic characteristics of highspeed motorized spindle based on NewSpilad
-
摘要: 文章通过NewSpilad软件对电主轴进行静态和模态分析，探究轴承预紧力和主轴悬伸量对主轴刚度及固有频率影响。结果表明：调整轴承的预紧力对主轴径向刚度影响很小，变化量在20%以下；轴向刚度影响较大，变化量在50%以上；对主轴的固有频率影响较小，最大变化量为24%；增加悬伸量对主轴轴向刚度影响较小，变化量在5%以下；对径向刚度影响较大，变化量在13%左右；一阶固有频率有提升趋势。并通过主轴静动态特性测试试验验证，对比发现有限元分析结果与实际测试结果误差在10%以下。该研究结果为主轴静动态特性分析提供理论基础，进一步提升了主轴设计开发能力。Abstract: The static and modal analyses of the motorized spindle were carried out by NewSpilad software to explore the influence of bearing preload and spindle extended length on the stiffness and natural frequency of the spindle. The results show that adjusting the bearing preload has little effect on the radial stiffness of the spindle, with a change of less than 20%. The axial stiffness has a large influence, and the change amount is more than 50%. The effect on the intrinsic frequency of the spindle is small, and the maximum change is 24%. Increasing the overhang has a small effect on the axial stiffness of the spindle, with a change of 5% or less. The effect on radial stiffness is larger, and the change amount is about 13%. The first-order intrinsic frequency has a tendency to increase. And verified by the spindle static and dynamic accuracy test. Comparison found that the error between the finite element analysis results and the actual test results is within 10%. The results of this study provide a theoretical basis for the spindle static and dynamic characteristics analysis, and further enhance the spindle design and development capabilities.
-
表 2 悬伸量对刚度和频率的影响
悬伸量
a/mm径向刚度/
（N/μm）轴向刚度/
（N/μm）一阶固有
频率/Hz65 191 186 450.2 75 165 181 567.6 85 143 174 579.2 
下载: 导出CSV
-
[1] 王标. 电主轴动态特性分析及可靠性稳健设计[D]. 沈阳:东北大学,2022. [2] 郑亚琦,闫磊,彭子平,等. 基于专利分析的电主轴技术现状与发展研究[J]. 制造技术与机床,2022(8):69-73. [3] 崔方圆,李言,俞嘉艺,等. 高速电主轴静刚度仿真与实验研究[J]. 机械强度,2017,39(4):971-975. [4] 张耀东. 高速电主轴振动特性分析及其优化方法研究[D]. 哈尔滨:哈尔滨理工大学,2022. [5] 钟洪. 机床主轴功能部件技术发展现状与展望[J]. 世界制造技术与装备市场,2014(1):95-100. doi: 10.3969/j.issn.1015-4809.2014.01.015 [6] 连亚东,王洪申,李柏林. 基于ANSYS的电主轴静动态特性仿真分析[J]. 机械制造与自动化,2021,50(4):74-76,100. [7] 贾超凡,朱昱,倪红军,等. 数控机床主轴静动态特性分析与优化设计[J]. 组合机床与自动化加工技术,2019(8):12-15. [8] 王琴,熊万里,吕浪,等. 基于加载状态下动态特性预测的高速电主轴结构参数优化方法[J]. 机械设计,2015,32(11):19-25. [9] Li S S , Shen Y , He Q . Study of the thermal influence on the dynamic characteristics of the motorized spindle system[J]. Advances in Manufacturing, 2016, 4（4）: 355–362.Li S S ,Shen Y ,He Q . Study of the thermal influence on the dynamic characteristics of the motorized spindle system[J]. Advances in Manufacturing,2016,4(4):355–362. [10] 屈泽峰. 电主轴热力耦合动态特性分析与试验研究[D]. 长沙:湖南大学,2022. [11] 林守金,许涛,谭海辉,等. 基于双尺度调控的电主轴轴承预紧力优化方法[J]. 机电工程技术,2021,50(8):113-117. doi: 10.3969/j.issn.1009-9492.2021.08.032 [12] 李英明,孙涛,王加伟,等. 跨距和悬伸量对高速电主轴静动态性能影响分析[C]. 2017 3rd International Conference on Future Mechatronics and Automation (ICMA 2017),2017:115-120. [13] 周留洋. 高速电主轴的动静态特性分析与优化设计[D]. 兰州:兰州理工大学,2016. -
下载:
点击查看大图
图(15) / 表(4)
计量
- 文章访问数: 78
- HTML全文浏览量: 6
- PDF下载量: 22
- 被引次数: 0
