• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (15): 177-187.doi: 10.3901/JME.2022.15.177

• 特邀专栏:先进磨粒加工技术 • 上一篇    下一篇

扫码分享

仿形喷嘴磨料射流抛光微结构仿真及试验研究

陈逢军1, 尹业青1, 胡天2   

  1. 1. 湖南大学国家高效磨削工程技术研究中心 长沙 410082;
    2. 湖南艾凯瑞斯智能科技有限公司 长沙 410205
  • 收稿日期:2021-08-17 修回日期:2021-12-17 发布日期:2022-10-13
  • 通讯作者: 陈逢军(通信作者),男,1979年出生,副教授,博士研究生导师。主要研究方向为超精密加工与控制、微结构制造。E-mail:abccfj@126.com
  • 作者简介:尹业青,男,1996年生,硕士研究生。主要研究方向为精密与超精密加工。E-mail:chrisyin0919@163.com
  • 基金资助:
    国家自然科学基金(51975204)、湖南省重点研发计划(2021GK2025)和湖南省自然科学基金(2021JJ30103)资助项目。

Simulation and Experimental Research on Polishing Microstructure by Using Abrasive Water Jet with Profiling Nozzle

CHEN Fengjun1, YIN Yeqing1, HU Tian2   

  1. 1. National Engineering Research Center for High Efficiency Grinding, Hunan University, Changsha 410082;
    2. Hunan Accuracy Intelligent Technology Co. Ltd., Changsha 410205
  • Received:2021-08-17 Revised:2021-12-17 Published:2022-10-13

摘要: 针对微结构阵列抛光受尺寸限制、抛光工具制造困难且容易磨损等问题,结合磨料水射流形状自适应性、加工成本低廉等特点提出一种仿形喷嘴磨料水射流抛光微结构阵列的方法。基于单颗磨粒去除特性与磨粒流场分布推导壁面材料去除模型,仿真分析仿形喷嘴型槽流场以及壁面材料去除特性后,进行了喷嘴类型与工艺参数对壁面抛光效果的影响实验。结果表明,仿形喷嘴2加工的型槽表面效果良好,在加工压力0.8 MPa、磨粒浓度3%、磨料粒径3μm条件下加工30 min后,型槽底壁面以及侧壁面Ra由初始198 nm分别降至69 nm、80 nm,Ra相对差值13.75%,表明型槽侧壁面与底壁面表面加工质量具有较好的一致性。

关键词: 磨料水射流抛光, 微结构, 仿形喷嘴, 材料去除, 仿真分析

Abstract: Aiming at the problems such as difficulty in manufacturing and easy wear of polishing tools due to the limitation of size in polishing microstructure array, a kind of method called abrasive water jet polishing with profiling nozzle is proposed considering the shape adaptability and low processing cost.The abrasive water jet material removal model is deduced based on single particle removal and the distribution characteristics of the abrasive.After simulating the flow field and material removal characteristics, the effects of the nozzle type and process parameters on polishing are tested.The experimental results show that the profiling single nozzle 2 has a good effect on processing the surface of the groove.Under the conditions of processing pressure 0.8 MPa, abrasive particle concentration 3%, abrasive particle size 3 μm and polishing time 30 min, the Ra of the bottom and side wall surfaces of groove decreased from 198 nm to 69 nm and 80 nm with the relative difference of 13.75%, which indicates the quality of the two wall surfaces has a good consistency.

Key words: abrasive water jet machining, microstructure, profiling nozzle, material removal, simulation analysis

中图分类号: