| 赵先锋， 胡小龙， 史红艳.悬链线结构微细立铣刀的动态性能研究[J].轻工机械,2021,39(1):12-16 |
| 悬链线结构微细立铣刀的动态性能研究 |
| Dynamic Performance Study of Fine End Mill with Catenary Structure |
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| DOI：10.3969/j.issn.1005 2895.2021.01.003 |
| 中文关键词: 微细立铣刀 悬链线 模态分析 有限元分析 |
| 英文关键词:micro end mill catenary modal analysis FEA（finite element analysis） |
| 基金项目:国家自然科学基金（51765009）；贵州省科技厅 贵州大学联合基金资助项目(黔科合LH字\[2017\]7235号)；贵州大学2017年度学术新苗培养及创新探索专项项目(黔科合平台人才\[2017\]5788)。 |
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| 中文摘要: |
| 微细立铣刀的动态特性和刚度是衡量刀具性能的重要指标，为提高微细立铣刀刀具的动态特性和刚度，课题组设计了一种悬链线型微细立铣刀，将微细立铣刀锥颈部分设计为悬链线结构，实现刀柄和刃口尺寸的渐变。采用有限元分析的方法，对刃口尺寸D为0.1和0.2 mm的悬链线型、直线型和直线倒圆型3种微细立铣刀结构进行模态分析。分析结果表明：锥颈为悬链线结构的新型微细立铣刀固有频率相对其他两种结构有明显增加。该项研究为提升高刚度微细立铣刀的动态性能提供了设计参考。 |
| 英文摘要: |
| The dynamic characteristics and stiffness of the micro end mill are important indicators for measuring the performance of the tool. To improve the dynamic characteristics and stiffness of the micro end mill tool, a new structure of the micro end mill was designed. The tapered end portion of the micro end mill was designed as a catenary structure to achieve a gradual change in the size of the shank and cutting edge. Using finite element analysis method, the modal comparison analysis was carried out on three kinds of micro end mill structures (catenary, linear, linear + rounded) with cutting edge dimension D of 0.1 and 0.2 mm. The analysis results show that the natural frequency of the new micro end mill with the tapered end portion as the catenary structure is significantly increased comparing to the other two structures. [JP2]This research can provide a reference for improving the dynamic performance of high stiffness micro end mills. |
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