阀套交叉孔磨粒流精密加工质量分析

doi:10.13229/j.cnki.jdxbgxb.20220075

摘要/Abstract

摘要：

采用磨粒流精密加工方法对阀套交叉孔进行去毛刺处理，通过大涡模拟的方法和合理的亚格子模型对阀套工件在侧孔出流条件下进行数值模拟分析。在不同流速和黏度情况下，分析了流体应变率、速度矢量、壁面剪切力对交叉孔边缘圆角半径大小、毛刺去除以及径向孔壁面加工质量的影响。试验结果表明：流体黏度越低、速度越大，交叉孔边缘圆角半径越大；黏度越高、速度越大，径向孔壁面加工质量越高；为保证交叉孔边缘有较小的圆角，应选用低速、高黏流体进行阀套交叉孔的精密加工。

关键词: 机械制造工艺与设备, 磨粒流精密加工, 阀套交叉孔, 去毛刺, 质量分析

Abstract:

The abrasive flow precision machining method was used to deburr the cross hole of the valve sleeve. Through the large eddy simulation method and the reasonable sub-grid model， the numerical simulation analysis was carried out for the valve sleeve workpiece under the condition of side hole outflow. Under the condition of different flow velocities and viscosity， the effects of fluid strain rate， velocity vector， and wall shear force on the fillet radius of cross-hole edge， burr removal， and radial hole wall processing quality were analyzed. The experimental results show that the lower the fluid viscosity and the higher the speed， the larger the fillet radius of the edge of the cross hole， the higher the viscosity and the speed， and the higher the processing quality of the radial hole wall. To ensure that the edge of the cross hole has a small fillet， the low-speed and high viscosity fluid should be selected for the precision processing of the cross hole of the valve sleeve.

Key words: machinery manufacturing technology and equipment, abrasive flow precision machining, valve sleeve cross hole, burr removal, quality analysis

中图分类号:

TH161.1

郭静,桂林,侯威,李俊烨,朱志宝,孙立伟. 阀套交叉孔磨粒流精密加工质量分析[J]. 吉林大学学报(工学版), 2023, 53(12): 3367-3378.

Jing GUO,Lin GUI,Wei HOU,Jun-ye LI,Zhi-bao ZHU,Li-wei SUN. Quality analysis of abrasive flow precision machining of cross hole of valve sleeve[J]. Journal of Jilin University(Engineering and Technology Edition), 2023, 53(12): 3367-3378.

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黏度/ （Pa·s）	径向孔1		径向孔2		径向孔3
黏度/ （Pa·s）	点1	点2	点3	点4	点5	点6
0.045	1.054	0.946	1.047	1.018	1.060	1.145
0.1	0.968	0.843	0.949	0.882	0.960	1.002
0.15	0.934	0.807	0.924	0.829	0.904	0.957

黏度/ （Pa·s）	径向孔1		径向孔2		径向孔3
黏度/ （Pa·s）	左	右	左	右	左	右
0.045	1 694	33 763	1 433	21 277	4 409	16 188
0.1	206	36 776	5 487	29 907	10 860	19 326
0.15	908	37 778	5 882	33 249	13 815	21 571

速度/ （m·s^-1）	径向孔1		径向孔2		径向孔3
速度/ （m·s^-1）	点7	点8	点9	点10	点11	点12
3	4.86	1.85	4.46	2.59	3.86	3.79
4	6.54	2.51	6.03	3.60	5.32	5.16
5	8.19	3.17	7.64	4.63	6.84	6.64

速度/ （m·s^-1）	径向孔1		径向孔2		径向孔3
速度/ （m·s^-1）	点1	点2	点3	点4	点5	点6
3	4.77	4.10	4.84	4.30	4.76	4.97
4	7.04	6.15	7.15	8.58	7.15	7.46
5	9.42	8.49	9.73	9.13	9.89	10.18

速度/ （m·s^-1）	径向孔1		径向孔2		径向孔3
速度/ （m·s^-1）	左	右	左	右	左	右
3	1 077	16 363	3 347	12 622	6 738	9 071
4	1 240	23 407	2 936	16 624	7 446	11 273
5	1 442	30 422	1 139	19 754	6 463	12 373