Journal of Jilin University(Engineering and Technology Edition) ›› 2021, Vol. 51 ›› Issue (2): 486-492.doi: 10.13229/j.cnki.jdxbgxb20200134

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Multi dimension datum measurement method of railway vehicle body based on innovation theory

Lin-lin SUN1,2(),Chun-sheng WANG1(),Xin-yue GAO2,Yu-xin REN2,Qing-wei DONG3,Li-li GUO3   

  1. 1.Engineering and Technology Center，CRRC Changchun Railway Vehicles Co. ，Ltd. ，Changchun 130062，China
    2.School of Mechanical and Aerospace Engineering，Jilin University，Changchun 130022，China
    3.Jilin Province Keyida Technology Co. ，Ltd. ，Changchun 130012，China
  • Received:2020-03-06 Online:2021-03-01 Published:2021-02-09
  • Contact: Chun-sheng WANG E-mail:183228448@qq.com;wangchunsheng@cccar.com.cn

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Abstract:

Aiming at the problem of rapid and accurate positioning of assembly reference points of rail vehicles， a multi-dimensional reference point positioning method is designed. Through IFR analysis， P&B product design and other methods， the scheme combines hardware and software. The instrument carries multiple ranging modules and communication modules， and transmits the measured car body data to the platform for analysis and calculation. Then， according to the calculation results， accurate reference points are obtained and positioned. In the practical work， comparing the new scheme with the traditional manual measurement method， the accuracy and efficiency of the new scheme are significantly improved compared with the original scheme.

Key words: assembly positioning, benchmark measurement, P & B product design, rail vehicle

CLC Number: 

  • TH181

Table 1

Resource list"

物质资源参数资源能量资源
物质资源详细物质资源
两侧壁板窗户

大小、形状

亮度、流量

重力场、光场、

风场

窗户基准点大小、形状、方向重力场、方位
板材中心线大小、形状、方向重力场、方位
两侧壁板

大小、形状

压强、导电率

重力场、内能、

应力、电能

底板板材中心线方向方位
地板支撑块地板支撑块大小、形状、体积重力场
防护层防护层

种类、颜色

厚度、孔隙率

光场、密度
激光测距仪激光测距仪大小、形状、方向

重力场、光场、

方位

车顶车顶滑道大小、形状、方向重力场、方位
车顶基准点方向方位

Table 2

Process function"

工序功能
切割板材板材加工到合适大小，加工出板材基准点
焊接车体将板材焊接形成车体
打磨车体去除氧化层
涂抹防护层防止车体被氧化
定位基准点定位基准点
定位装配点根据基准点定位出装配点
装配组件根据装配点装配组件以及其余组件

Fig.1

P&B decomposition function"

Fig.2

An object that produces an appropriate action"

Fig.3

Schematic diagram of positioning mode of some devices"

Table 3

Datum line straightness error data sheet mm"

样本号原方案新方案样本号原方案新方案
10.081.8614-1.280.80
2-2.56-0.5415-1.241.52
3-1.46-0.6616-1.240.58
41.560.8617-1.00-0.46
51.620.00180.340.92
61.54-1.2619-0.300.38
7-2.670.00200.780.40
80.881.2821-0.360.12
9-0.891.20221.12-1.58
10-1.761.32232.59-0.24
11-2.79-0.8424-0.84-1.04
122.25-0.0425-0.620.68
13-0.320.20

Table 4

Datum point longitudinal offset error data table"

样本号原方案新方案样本号原方案新方案
1-1.080.1814-1.480.66
22.472.1515-0.520.68
30.880.7216-0.28-0.50
4-0.661.6217-0.840.34
50.44-0.0818-2.79-0.62
6-2.38-1.0419-0.74-1.90
70.72-0.12200.80-0.12
8-1.401.28211.280.62
91.30-0.1822-0.300.44
10-0.401.22232.170.10
112.79-0.28240.680.70
121.68-0.64251.121.38
131.941.78

Fig.4

Straightness error control chart of reference line"

Fig.5

Longitudinal deviation error control chart of datum line"

Fig.6

Body shape of a certain height"

Fig.7

Three dimensional data fitting results of rail vehicle body"

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