汽车后板装置总成检具精度测量数据

在汽车企业生产过程中，需要对汽车的零部件进行测量，该测量项目涉及到将不规则的几何尺寸进行精度测量标定，传统测量器具难以满足该要求，因此需要使用专业的检具进行测量。本公司专业生产各类汽车零部件相关检具。为确认不同检具产品的检测精度，需要用专业的精度检测仪器进行精度检测。1.随机在本公司检具产品：汽车后板装置总成检具（机型代码：KC-HBZZ-2022-A35）生产线上抽检产品样本，在系统上建立空间直角坐标系，用三坐标测量机测得被测检具的XYZ三轴坐标。
2.运用空间向量法计算该检测空间偏差换算系数，具体算法：通过三维图形理论值对实物三维尺寸进行对比得出XYZ三个轴向值偏差比，将三个轴向值的偏差比的平方数相加，再开根号，得到空间偏差比σ=√[（X轴坐标-X轴标准标定值）/X轴标准标定值+（Y轴坐标-Y轴标准标定值）/Y轴标准标定值+（Z轴坐标-Z轴标准标定值）/Z轴标准标定值]，其中产品标准X轴标定值为238，产品标准Y轴标定值为203，产品标准Z轴标定值为10。因此空间偏差比σ=√[（X轴坐标-238）/238+（Y轴坐标-203）/203+（Z轴坐标-10）/10]，结果精确到小数点后第四位。
3.计算该检具的偏差换算系数，具体算法：偏差系数ζ=k×σ，其中k为被测检具对应的偏差换算系数。
4.将空间偏差系数ζ与被测检具对应的标准标定值进行比较，若在标准范围内则为合格检具，若超出标准则为不合格检具。

During the production process of automotive enterprises, it is necessary to measure automotive parts. This measurement project involves precision measurement and calibration of irregular geometric dimensions, and traditional measuring tools cannot meet the requirements, so professional checking fixtures are required for measurement. This company specializes in producing various checking fixtures related to automotive parts. To verify the detection accuracy of different checking fixture products, professional precision testing instruments are needed for accuracy detection.
1. Randomly sample products from the production line of the company's checking fixture product: automotive rear plate assembly checking fixture (model code: KC-HBZZ-2022-A35). Establish a 3D Cartesian coordinate system on the system, and measure the XYZ three-axis coordinates of the tested checking fixture using a Coordinate Measuring Machine (CMM).
2. Calculate the spatial deviation conversion coefficient using the spatial vector method. The specific algorithm is as follows: Compare the actual 3D dimensions with the theoretical values of the 3D model to obtain the deviation ratios of the three axial directions (X, Y, Z). Sum the squares of the three axial deviation ratios and then take the square root to obtain the spatial deviation ratio σ. The formula is σ = √[((X-axis coordinate - X-axis standard calibration value)/X-axis standard calibration value) + ((Y-axis coordinate - Y-axis standard calibration value)/Y-axis standard calibration value) + ((Z-axis coordinate - Z-axis standard calibration value)/Z-axis standard calibration value)]. The standard calibration values are: 238 for the X-axis, 203 for the Y-axis, and 10 for the Z-axis. Thus, the simplified formula for σ is σ = √[((X - 238)/238) + ((Y - 203)/203) + ((Z - 10)/10)]. The result shall be accurate to the 4th decimal place.
3. Calculate the deviation conversion coefficient of the checking fixture. The specific algorithm is: Deviation coefficient ζ = k × σ, where k is the deviation conversion coefficient corresponding to the tested checking fixture.
4. Compare the spatial deviation coefficient ζ with the standard calibration value corresponding to the tested checking fixture. If it falls within the standard range, the checking fixture is qualified; otherwise, it is unqualified.

搜集汇总

数据集介绍

特点

该数据集包含101条汽车后板装置总成检具的精度测量数据，涉及多个关键测量参数，如XYZ轴坐标和空间偏差比等，主要用于汽车生产中的零部件精度检测。数据由台州市肯创机械设备有限公司提供，更新频次为检测后更新。