| 陈小静,唐 军,肖淼鑫,徐镜福,白林锋.低温微量超声雾化声学系统*[J].,2023,42(4):722-729 |
| 低温微量超声雾化声学系统* |
| Cryogenic minimum quantity ultrasonic atomization acoustic system |
| 投稿时间：2022-03-28 修订日期：2023-07-02 |
| 中文摘要: |
| 针对低温微量超声雾化声学系统中的关键部件单波长超声雾化喷嘴进行研究分析，首先基于等效电路原理和传输矩阵法分别建立了带中心孔换能器和带中心孔复合变幅杆的频率方程，并应用数学分析软件获得了准确的数值解，实现了超声雾化喷嘴的全谐振。然后，对其进行有限元动力学分析和振动特性测试，结果表明二者相对于设计频率25kHz的偏差率在0.6％以内，且空载超声振幅达13.5μm。之后，应用流体仿真分析软件对砂轮-工件磨削区进行流场特性分析，结果表明低温微量超声雾化声学系统可以解决磨削区涡流现象的产生。最后，通过对该系统使用前、后两种润滑方式的磨削结果进行测试发现：低温微量超声雾化润滑不仅切削液使用量少，而且可以避免工件表面出现烧伤和硬度降低。 |
| 英文摘要: |
| The single wavelength ultrasonic atomizing nozzle, which is the key component of cryogenic minimum quantity ultrasonic atomization acoustic system, is studied. Firstly, based on the equivalent circuit principle and transmission matrix method，the frequency equations of transducer with central hole and composite horn with central hole are presented. The accurate numerical solution of the frequency equations is obtained by using the mathematical analysis software, and the full resonance of the system is realized. Then, the finite element dynamic analysis and vibration characteristics test of the ultrasonic atomizing nozzle are carried out. The results show that the deviation rate between the two relative to the design frequency 25kHz is less than 0.6%, and the idle ultrasonic amplitude is 13.5μm. After that, the flow field characteristics of the grinding area are analyzed by using the fluid simulation analysis software. The results show that the cryogenic minimum quantity ultrasonic atomization acoustic system may solve the generation of air vortex phenomenon in the grinding area. Finally, comparing the grinding tests of two lubrication modes before and after the use of the system are compared and analyzed. The results show that cryogenic minimum quantity ultrasonic atomization lubrication can not only use less cutting fluid, but also avoid the burn and hardness reduction on the work-piece surface. |
| DOI：10.11684/j.issn.1000-310X.2023.04.007 |
| 中文关键词: 低温微量超声雾化润滑 超声雾化喷嘴 频率方程 有限元分析 |
| 英文关键词: Cryogenic minimum quantity ultrasonic atomization lubrication Ultrasonic atomizer Frequency equation Finite element analysis |
| 基金项目:河南省高等学校重点项目(21A460022)；河南省科技攻关项目(202102210113) |
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