[1]傅秀清,沈莫奇,林尽染,等.电解加工交叉孔相贯处过渡圆弧的试验研究[J].南京农业大学学报,2020,43(3):556-563.[doi:10.7685/jnau.201907032]
 FU Xiuqing,SHEN Moqi,LIN Jinran,et al.Experimental study on the transition arc on the intersecting line of cross-holes by electrochemical machining[J].Journal of Nanjing Agricultural University,2020,43(3):556-563.[doi:10.7685/jnau.201907032]
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电解加工交叉孔相贯处过渡圆弧的试验研究()
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《南京农业大学学报》[ISSN:1000-2030/CN:32-1148/S]

卷:
43卷
期数:
2020年3期
页码:
556-563
栏目:
食品与工程
出版日期:
2020-05-10

文章信息/Info

Title:
Experimental study on the transition arc on the intersecting line of cross-holes by electrochemical machining
作者:
傅秀清 沈莫奇 林尽染 王清清 段双陆
南京农业大学工学院/江苏省智能化农业装备重点实验室, 江苏 南京 210031
Author(s):
FU Xiuqing SHEN Moqi LIN Jinran WANG Qingqing DUAN Shuanglu
College of Engineering/Jiangsu Key Laboratory of Intelligence Agricultural Equipment, Nanjing Agricultural University, Nanjing 210031, China
关键词:
电解加工燃油喷射体电解加工过程模型过渡圆弧工艺试验
Keywords:
electrochemical machining(ECM)fuel injection bodyECM processing modeltransition arcexperiment
分类号:
TH161
DOI:
10.7685/jnau.201907032
摘要:
[目的]为进一步提高柴油发动机的燃油效率,降低发动机零部件的更换和维修成本,对利用电解加工技术去除燃油喷射体内交叉孔相贯处的锐边和毛刺,且精确控制过渡圆弧半径进行研究。[方法]基于COMSOL Multiphysics建立电解加工交叉孔相贯处过渡圆弧的加工过程模型,研究阴极结构、加工时间对过渡圆弧半径的影响规律,并对阴极结构进行优化设计,得到优化阴极,建立优化阴极的交叉孔相贯处过渡圆弧的加工过程模型,并进行优化阴极电解加工去除交叉孔相贯处锐边和毛刺的工艺试验,对比分析试验和仿真得到的过渡圆弧半径。[结果]优化阴极电解加工去除了交叉孔相贯处的锐边和毛刺,精确控制过渡圆弧平均半径(R)为2.029 mm,达到R=(2±0.2)mm的尺寸要求。建立的电解加工过程模型可以准确预测过渡圆弧的尺寸,减少试验工作量,指导了阴极的结构设计和工艺试验的参数选择。[结论]最终得到的优化阴极可以精确控制电解加工交叉孔相贯处过渡圆弧半径达到R=(2±0.2)mm。
Abstract:
[Objectives] In order to further improve the fuel efficiency of diesel engines and reduce the cost of maintenance,a research about using electrochemical machining(ECM)technology to remove sharp edges and burrs at the intersection of cross-holes in fuel injection body was carried out. [Methods] Based on COMSOL Multiphysics the model of ECM processing was established. The influence of the change rule of radius caused by cathode structure was studied. Meanwhile,the cathode structure was optimized. The transition arc radio obtained by experiment and simulation were also compared and analyzed. [Results] Finally sharp edges and burrs at intersecting holes were removed,and the size of radius obtained by ECM was within R=(2±0.2)mm. The experimental results showed that the finite element model of ECM processing predicted the size of radius accurately. Also the finite element model of ECM processing guided the optimal design of cathode and the selection of process parameters. [Conclusions] The optimized cathode can accurately control the radius of the transition arc at the intersection of cross-holes to R=(2±0.2)mm.

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备注/Memo

备注/Memo:
收稿日期:2019-07-18。
基金项目:中国博士后科学基金项目(2017M621665);江苏省博士后科学基金项目(2018K022A);江苏省研究生科研与实践研究创新计划项目(SJCX19_0145)
作者简介:傅秀清,副教授,硕导,研究方向为特种加工、智能农业装备研制,E-mail:fuxiuqing@njau.edu.cn。
更新日期/Last Update: 1900-01-01