Page 76 - 《应用声学》2023年第3期

第 42 卷 第 3 期 Vol. 42, No. 3
2023 年 5 月 Journal of Applied Acoustics May, 2023

⋄ 研究报告 ⋄

阵列式压电振子超声复合喷丸强化 ∗

张炜舜 刘小振 李道朋 傅 波 †

(四川大学机械工程学院 成都 610065)

摘要：为了进一步改善超声喷丸强化质量，提升工件表面残余应力和显微硬度的均匀性，对压电振子阵列型超
声喷丸强化加工系统进行了改进，提出了在强化加工过程中辅助工件往复运动的方法。对改进后的压电振子
阵列型超声喷丸强化加工原理进行了阐述，分析了激振片的振动特性并进行了结构尺寸优化，应用仿真软件
对工件往复运动下超声喷丸强化过程进行了仿真研究，分析了在不同的往复运动频率下，工件表面残余应力
分布情况。实验测试了在不同喷丸强化时间及往复运动频率下超声喷丸强化加工质量，探究了喷丸时间和往
复运动频率对工件表面显微硬度的影响。结果表明：在压电振子阵列型超声喷丸强化过程中辅助工件往返运
动，可以有效提高工件表面残余应力和显微硬度分布的均匀性，提升表面强化质量。
关键词：超声喷丸强化；工件运动；残余应力；显微硬度
中图法分类号: TG178 文献标识码: A 文章编号: 1000-310X(2023)03-0514-09
DOI: 10.11684/j.issn.1000-310X.2023.03.009

Ultrasonic shot peening with piezoelectric vibrator array under reciprocating

motion of workpiece

ZHANG Weishun LIU Xiaozhen LI Daopeng FU Bo

(School of Mechanical Engineering, Sichuan University, Chengdu 610065, China)

Abstract: In order to improve the uniformity of residual stress and microhardness of workpiece surface after
ultrasonic shot peening, the ultrasonic shot peening machining system with piezoelectric vibrator array has been
improved, where the workpiece moves back and forth during ultrasonic shot peening machining. The working
principle of the improved ultrasonic shot peening processing with piezoelectric vibrator array is described. The
vibration characteristics of the vibration plate are analyzed and the structural size is optimized. The ultrasonic
shot peening process is simulated by using simulation software, and the residual stress distribution on the
workpiece surface is analyzed under different reciprocating frequency of the workpiece. The ultrasonic shot
peening processing quality is tested under different shot peening time and workpiece reciprocating movement
frequency, and the effects of shot peening time and workpiece reciprocating movement frequency on the surface
residual stress distribution uniformity and microhardness are investigated. The results show that the uniform
distribution of residual stress and microhardness on the workpiece surface can be improved effectively by
assisting reciprocating motion of the workpiece in the process of ultrasonic shot peening.
Keywords: Ultrasonic shot peening; Workpiece movement; Residual stress; Microhardness

2022-01-27 收稿; 2022-03-07 定稿
四川省科技计划项目 (2020YFG0117), 川大 -自贡校地科技合作专项资金项目 (2020CDZG-1)
∗
作者简介: 张炜舜 (1997– ), 男, 四川内江人, 硕士研究生, 研究方向: 机械制造及其自动化。
通信作者 E-mail: bofu@scu.edu.cn
†