Ultrasonic Polishing Mechanism and Simulative and Experimental Sound Field Researches on Transducer Array

doi:10.7652/xjtuxb202002004

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Ultrasonic Polishing Mechanism and Simulative and Experimental Sound Field Researches on Transducer Array

更新时间：2025-05-08

- Ultrasonic Polishing Mechanism and Simulative and Experimental Sound Field Researches on Transducer Array
- Vol. 54, Issue 2, Pages: 24-34(2020)
- 作者机构：
  
  四川大学机械工程学院,成都,610065
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202002004
  CLC： TH161
- Online First：10 February 2020，
  
  Published：2020
- 稿件说明：
移动端阅览
Ultrasonic Polishing Mechanism and Simulative and Experimental Sound Field Researches on Transducer Array[J]. 2020, 54(2): 24-34.
DOI：

Ultrasonic Polishing Mechanism and Simulative and Experimental Sound Field Researches on Transducer Array[J]. 2020, 54(2): 24-34. DOI： 10.7652/xjtuxb202002004.

摘要

为了提高工件表面抛光质量和抛光效率

对传统非接触式超声振动抛光进行了改进

将单个换能器换成换能器阵列

同时加入料筐的旋转运动

设计了实验样机。分析了超声抛光的材料去除机理

推导出单颗磨粒去除材料体积和磨粒振动速度的表达式。利用COMSOL对样机抛光槽内液体进行声场仿真

研究了换能器个数、换能器布置间距、换能器输入电压对抛光液声场分布的影响

优化了抛光槽底部换能器的布置方式

仿真结果显示

换能器个数为4个、布置间距为55 mm时

抛光槽中心区域声压分布更加均匀。实验探究了样机料筐转速、抛光时间、换能器输入电压对工件表面抛光质量的影响规律

确定了工件表面抛光效果最佳时的工艺参数组合

结果表明:料筐转速为50 r/min、抛光时间为80 min、换能器输入电压为150 V时

抛光效果最好

此时工件表面粗糙度减小量为0.019 μm

表面粗糙度变化率为33.33%。

Abstract

To improve polishing quality and efficiency of workpiece surface

the traditional non-contact ultrasonic vibration polishing is modified

and an experimental prototype is designed

where an array of transducers is used instead of single transducer and the rotating motion of the basket is considered. The material removal mechanism of ultrasonic polishing is analy-ed

and the expression of material volume removal by single abrasive particle and the expression of abrasive vibration velocity are deduced. The sound field simulation of the liquid in polishing tank of the prototype is carried out by COMSOL. The influences of number of transducers

spacing of the transducers and input voltage of the transducer on the sound field distribution of the polishing fluid are discussed

and the arrangement of transducers at the bottom of the polishing tank is optimi-ed. Simulation shows that the sound pressure distribution in the central area of the polishing tank is more uniform when four transducers

关键词

Keywords

references

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