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工程设计学报
工程设计学报  2018, Vol. 25 Issue (3): 302-308,314    DOI: 10.3785/j.issn.1006-754X.2018.03.008
优化设计     
喷油器体深孔直线度加工工艺参数优化
赵延超1, 武美萍1, 王全龙1, 吴克中2
1. 江南大学 机械工程学院, 江苏 无锡 214100;
2. 中国第一汽车股份有限公司 无锡油泵油嘴研究所, 江苏 无锡 214063
Optimization of processing parameters for the deep hole straightness of injector
ZHAO Yan-chao1, WU Mei-ping1, WANG Quan-long1, WU Ke-zhong2
1. School of Mechanical Engineering, Jiangnan University, Wuxi 214100, China;
2. Wuxi Fuel Injection Equipment Research Institute, China FAW Group Co., Ltd., Wuxi 214063, China
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摘要：

深孔直线度误差严重影响着高压共轨喷油器体的性能。为研究不同的加工工艺参数对喷油器体深孔直线度的影响规律，根据单因素试验方法，利用枪钻对喷油器体深孔进行加工试验，采用线结构光视觉测量技术与最小二乘法测量深孔直线度，分析切削速度、进给速度和切削液压力对喷油器体深孔直线度的影响规律。结果表明：随着切削速度的增大，直线度先减小后增大，当切削速度为6 200 r/min时，直线度最小；当进给速度较小时，直线度较小，随着进给速度的增大，直线度总体呈现波动上升的趋势；当切削液压力较低时，直线度较大，直线度随着切削液压力的增大而减小，当切削液压力值达到8 MPa后，直线度随切削液压力的增大而增大。基于三因素三水平的正交试验，对试验结果进行极差和方差分析，获得最佳加工工艺参数组合：切削速度为6 200 r/min、进给速度为50 mm/min、切削液压力为8 MPa，并对该参数组合进行试验验证。研究结果对减小深孔加工直线度，提高喷油器体加工质量和系统喷油性能的稳定性具有重要的参考价值。
关键词： 深孔加工;  喷油器体;  深孔直线度;  极差分析;  方差分析    
Abstract:

Deep hole straightness error has a strong impact on the performance of high pressure common rail injector. In order to research the influence of different processing parameters on the deep hole straightness, a single factor experiment of the hole in the injector body was carried out by gun-drill, and the straightness was measured by the line structured optical vision measurement technology and the least square method, then the influence of cutting speed, feeding speed and cutting fluid pressure on the straightness of the injector body was analyzed. The results showed that the straightness decreased first and then increased with the increase of cutting speed, when the cutting speed was 6 200 r/min, the straightness was minimum. When the feed speed was small, the straightness was small, as a whole, the straightness fluctuated upward with the increase of feeding speed. When the cutting fluid pressure was small, the straightness was large, and the straightness decreased with the increase of cutting fluid pressure. After the cutting fluid pressure value reached 8 MPa, the straightness increased with the increase of cutting fluid pressure. Based on three factors and three levels of the orthogonal test, the range analysis and variance analysis were done to the test results, and the best processing parameter combination composed of the cutting speed of 6 200 r/min, feeding speed of 50 mm/min and oil pressure of 8 MPa was obtained, then the best parameter combination was verified by experiment. The research results have important reference value for reducing the straightness of the deep hole machining, improving the quality of the injector body and the stability of the injection performance of the system.
Key words: deep hole machining    injector body    deep hole straightness    range analysis    variance analysis
收稿日期: 2017-05-09 出版日期: 2018-06-28
CLC:  TH161  
基金资助:

国家工业与信息化部04重大专项（2015ZX04002021）
通讯作者: 武美萍(1970-),女,山西太原人,教授,博士生导师,博士,从事数字化设计与制造、复杂装备智能化制造等研究,E-mail:wmp169@jiangnan.edu.cn     E-mail: wmp169@jiangnan.edu.cn
作者简介: 赵延超(1992-),男,江苏南京人,硕士生,从事深孔加工及先进制造技术研究,E-mail:zhychnj@126.com,http://orcid.org/0000-0001-8455-8631
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引用本文:

赵延超, 武美萍, 王全龙, 吴克中. 喷油器体深孔直线度加工工艺参数优化[J]. 工程设计学报, 2018, 25(3): 302-308,314.

ZHAO Yan-chao, WU Mei-ping, WANG Quan-long, WU Ke-zhong. Optimization of processing parameters for the deep hole straightness of injector[J]. Chinese Journal of Engineering Design, 2018, 25(3): 302-308,314.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2018.03.008    或    https://www.zjujournals.com/gcsjxb/CN/Y2018/V25/I3/302

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