一种用于双曲圆振动钻孔装置的新型设计及其性能评估
Yunxiang Zheng1, Cheng Hu1, Mao Wang1
1State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China.
Ultrasonics
|January 23, 2025
概括
超声波圆振动钻 (UEVB) 通过将表面粗度降低72%,并将孔的圆度提高到0.473微米,从而提高了钢材加工. 这种新的方法使得超精密的钻石切割钢成为可能,这对于航空航天和汽车行业至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 制造业 制造技术 制造技术
背景情况:
- 航空航天和汽车行业的精密匹配部件要求纳米表面粗性和亚微米形状精度.
- 传统的钻石切割由于活性化学反应而面临钢铁方面的挑战,限制了其应用.
- 超声波圆振动切割通过减少切割热量和减轻刀具磨损来提供解决方案.
研究的目的:
- 为超声波圆振动钻孔 (UEVB) 装置提出一种新的,简单的理论模拟设计方法.
- 研究UEVB在超精密加工钢的有效性.
- 通过实验测试和与传统方法的比较来验证UEVB设备的性能.
主要方法:
- 开发一个UEVB装置,利用两个六级曲振动模式来实现圆的工具运动.
- UEVB装置的理论设计和模拟.
- 实验验证包括阻抗,频率扫描和振幅测试,随后对S136钢进行切割试验.
主要成果:
- 模拟结果与实验阻抗,频率扫描和振幅测试结果密切匹配.
- 与普通钻孔相比,UEVB技术抑制了10%的系统喋喋不休,并将表面粗度 (Ra) 降低了72%.
- 实现了加工表面粗度Ra 11.3 nm和30毫米直径孔的孔圆度为0.473微米,超过了G1标准.
结论:
- 开发的UEVB设备和设计方法可用于钢的超精密加工.
- UEVB有效地抑制了聊天,显著降低了表面粗度,并提高了尺寸精度.
- 这项技术使钻石工具能够在苛刻的行业中制造高精度钢件.
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