微量润滑切削多组分在线混合器结构设计及仿真

宋海潮; 代祥; 刘润泽

doi:10.13433/j.cnki.1003-8728.20200501

微量润滑切削多组分在线混合器结构设计及仿真

doi: 10.13433/j.cnki.1003-8728.20200501

1.
南京工业职业技术大学机械工程学院, 南京 210023
2.
南京汽车集团有限公司汽车工程研究院, 南京 211100

基金项目:

江苏高校“青蓝工程”项目、江苏农业农村厅集成创新项目 SJC20200049

南京工业职业技术大学引进人才基金项目 YK18-01-11

详细信息

作者简介:
宋海潮(1978-), 教授, 博士, 研究方向为数字化设计与先进制造技术, songhc@niit.edu.cn

中图分类号: TG501
计量
- 文章访问数: 148
- HTML全文浏览量: 51
- PDF下载量: 16
- 被引次数: 0
出版历程
- 收稿日期: 2020-12-21
- 刊出日期: 2021-10-01

Structure Design and Simulation Analysis of Multi-component Inline Mixer for Mixing Cutting Fluid in Minimal Quantity Lubrication

1.
College of Mechanical Engineering, Nanjing Vocational University of Industry Technology, Nanjing 210023, China
2.
Automotive Engineering Research Institute, Nanjing Automobile Group Co., Ltd., Nanjing 211100, China

摘要

摘要: 为促进不同切削液在线混合，设计了混合器结构，进行了切削液雾滴分布均匀性数值仿真试验，并开展试验验证。结果表明：具有分流器结构，且进液口位于混合管中心部位的混合器均匀性指数γ_a值和变异系数CV值分别为0.873 4和0.363 8，均高于其他混合器；进行实际喷雾试验，基于水敏纸上雾滴分布，所得γ_a和CV值分别为0.892 8和0.284 4，近似于数值仿真结果。试验证明了基于数值仿真进行均匀性分析的可行性，验证了具有分流器结构，且进液口位于混合管中心部位的混合器性能优良，可以用于生产中切削液的在线混合式微量润滑。
- 切削液 /
- 微量润滑 /
- 在线混合 /
- 结构设计 /
- 数值仿真
Abstract: The cutting fluid of multi-component sprayed with inline mixing can effectively improve the lubrication and cooling efficacy of the machining zone. Therefore, a kind of mixer with differing structure parameters for inline mixing cutting fluids is proposed and designed. The inline mixing performance of the mixer with a multi-injection structure and the liquid inlet at the middle of the mixing tube is simulated and tested. Results show that the uniformity index (γ_a) and the coefficient of variation (CV) value obtained by numerical simulation are 0.873 4 and 0.363 8, respectively, which are higher than those of other mixers. Based on the actual distribution of droplets on the water-sensitive paper, the γ_a and CV values are 0.892 8 and 0.284 4, respectively, which are similar to the results obtained by numerical simulations. The tests proves the feasibility of uniformity analysis based on numerical simulation, and further shows that the proposed mixer has excellent performance and can be used in inline mixing cutting fluids under actual minimal quantity lubrication conditions.
- cutting fluid /
- minimal quantity lubrication /
- inline mixing /
- structure design /
- numerical simulation

HTML全文

图 1 混合器结构图

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图 2 分流器结构图

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图 3 预雾化喷嘴结构图

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图 4 计算域网格

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图 5 3个进液管雾滴在混合器出口截面分布图

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图 6 进液管1雾滴在混合器出口截面上分布图

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图 7 五位二等分区域划分方法

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图 8 混合器试验系统原理图

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图 9 水敏纸图像处理区域

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表 1 不同结构混合器混合均匀性指数

无分流混合(A因素)	均匀指数γ_a	变异系数CV	有分流混合(A因素)	均匀指数γ_a	变异系数CV	γ_a差值	CV差值
入口进液(B因素)	0.730 2	89.93%	入口进液(B因素)	0.853 4	48.35%	0.123 2	-41.58%
中间进液(B因素)	0.745 0	89.56%	中间进液(B因素)	0.873 4	36.38%	0.128 4	-53.18%
出口进液(B因素)	0.710 6	91.89%	出口进液(B因素)	0.816 5	70.66%	0.105 9	-21.23%
差值	0.034 4	2.33%	差值	0.056 9	34.28%	-	-

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表 2 不同结构混合器混合均匀性参数估计

参数	b		标准误差		t		Sig.
参数	γ_a	CV	γ_a	CV	γ_a	CV	γ_a	CV
截距	.823	.619	.007	.093	121.030	6.634	.000	1.021
无分流器(A)	-.119	.387	.007	.093	-17.522	4.141	.003	.788
有分流器(A)	0^a	0^a	-	-	-	-	-	-
入口进液(B)	.028	-.121	.008	.114	3.392	-.1.061	.077	.371
中间进液(B)	.046	-.183	.008	.114	5.480	-1.601	.032	.309
出口进液(B)	0^a	0^a	-	-	-	-	-	-

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表 3 出口截面雾滴分布均匀度评价参数(不同进气压力)

进气压力	变异系数CV	均匀性指数γ_a
0.4 MPa	48.69%	0.8893
0.6 MPa	36.38%	0.8734
0.8 MPa	82.81%	0.7844

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表 4 出口截面雾滴分布均匀度评价参数(不同进液压力)

进液压力	变异系数CV	均匀性指数γ_a
0.01 MPa	71.56%	0.829 3
0.1 MPa	36.38%	0.873 4
0.2 MPa	71.46%	0.849 5

下载: 导出CSV

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