锻压技术

板料成形几何尺寸光学检测精度评价的新方法研究

英文标题：New evaluation method of optical detection accuracy for sheet metal forming size

作者：张德海白代萍吴超王良文郭成

分类号：TP391;TG806

出版年,卷(期):页码：2012,37(6):96-100

摘要：

针对板料成形几何尺寸检测精度难以进行定量比较的问题，提出了一种板料成形几何尺寸光学检测精度评价的新方法。该方法基于统计学原理，结合三维光学测量技术的特点，引入统筹精度的概念来评价尺寸检测的精度，给出了统筹精度的计算方法和物理意义。采用该方法对某汽车后地板纵梁的回弹量检测精度进行评价。结果表明：后地板纵梁的三维空间几何量的统筹精度为0.512，x方向为0.059，y方向为0.363，z方向为0.539；其中z向的统筹精度数值大于三维空间值，三维空间量统筹精度的影响主要来自z向，y向次之，x向影响最小。

In order to solve the accuracy quantitative comparison problem of the sheet metal forming parts, a kind of new method of optical detection accuracy evaluation for geometry size of sheet metal forming was presented, which was based on the statistical theory and combined with characteristics of 3D optical measuring technology. The concept of overall accuracy was introduced to evaluate the accuracy of size detection, its calculation method was given and physical meaning was explained. The springback accuracy of a car back carling was conducted to evaluate using this method. The results show that the overall accuracy of the carling of 3D space geometry accuracy is 0.512, x direction is 0.059, y direction is 0.363 and z direction is 0.539. Among them, the overall accuracy of z direction is greater than 3D space geometry. The influence of accuracy analysis of 3D space geometry values are mainly from z direction, on the second place from y direction and minimum from x direction.

基金项目：

国家自然科学基金资助项目（50905012）；郑州轻工业学院博士科研基金资助项目；郑州市科技攻关项目（10PTGG3398）；河南省科技攻关计划（122102210221）；河南省高校科技创新团队支持计划资助项目（2012IRTSTHN013）

参考文献：

［1］Davis R R. Spacetime stereo: a unifying framework for depth from triangulation[J]. IEEE Trans Patter Mach Intel, 2005, 27 (2): 1-7.
［2］He B W, Li Y F. Camera calibration with lens distortion and from vanishing points[J]. Optical.Engineering, 2009, 48 (1): 013603-01-08.
［3］Zang S L, Liang J, Guo C. A constitutive model for springback prediction in which the change of Young's modulus with plastic deformation is considered [J]. International Journal of Machine Tools & Manufacture, 2007, 47 (11): 1791-1797.
［4］Fusiello A, Farenzena M, Busti A, et al. Computing rigorous bounds to the accuracy of calibrated stereo reconstruction[J]. IEEE Proceedings Vision Image and Signal Processing, 2005, 152 (6): 695-701.
［5］Olden E J, Patterson E A. A rational deciion making model for experimental mechanics [J]. Experimental Techniques, 2000, 24 (4): 26-32.
［6］Patterson E, Brailly P, Burguete R, et al. A challenge for high-performance full-field strain measurement systems[J]. Strain, 2007, 43 (3): 167-180.
［7］Patterson E A, Hack E, Brailly P, et al. Calibration and evaluation of optical systems for full-field strain measurement [J]. Optical and Lasers Engineering, 2006, 45 (5): 550-564.
［8］Whelan M, Albrecht P D, Hack E, et al. Calibration of speckle interferometer full-field strain measurement system [J]. Strain, 2008, 44 (2): 180-190.
［9］李钢.叶片边缘检测技术的研究[D].哈尔滨：哈尔滨工程大学，2005.
［10］陈福兴，张秋菊.叶片型面误差分析改进[J].汽轮机技术，2005，47（4）：303-305.
［11］王军.航空发动机叶片三位轮廓测量方法研究[D].北京：中国科学院，2005.
［12］VDI/VDE 2634 Blatt 1part 1: 110,2002,Optical 3D measuring systems-imaging systems with point-by-point probing[S].
［13］VDI/VDE 2634 Blatt 2part 2: 111,2002,Optical 3D measuring systems-optical systems based on area scanning[S].
［14］VDI/VDE 2634 Blatt3: 112,2006,Optical 3D measurement systems multiple view systems based on area scanning [S].
［15］Standardized project for optical techniques of strain measurement (SPOTS) [S/OL]. EU contract no. G6RD-CT-200200856, http://www.opticalstrain.org.
［16］ GB/T 12979，2008,近景摄影测量规范[S].
［17］ ISO/TAG4/WG3, 1995,Guide to the Expression of Uncertainty in Measurements (GUM)[S].
［18］ ISO IEC 17025,1999, General requirements for the competence of testing and calibration laboratories[S].
［19］ ISO 10012, 2003, Measurement Management Systems-requirements for measurement processes and measuring equipment[S].
［20］ ASTM Standards, E 220802, 2002,Standard Guide for Evaluating Non-Contacting Optical Strain Measurement System[S].
［21］ IMiF PW, Warsaw 2003, Standard Guide on Geometric Moiré for In-plane Displacement/strain Analysis[S].
［22］张德海，梁晋，唐正宗，等.大型复杂曲面产品近景工业摄影测量系统开发[J].光电工程，2009，36（5）：122-128.
［23］张德海，梁晋，唐正宗，等.基于近景摄影测量和三维光学测量的大幅面测量新方法[J].中国机械工程，2009，20（7）：817-822.
［24］张德海，梁晋，郭成.板料成形回弹三维光学测量技术研究[J].西安交通大学学报，2009，43（9）：51-55.
［25］张德海，梁晋，郭成.锻压制件及其模具的三维光学测量系统精度评价[J].光学精密工程，2009，17（10）：2431-2439.

服务与反馈：

【文章下载】【加入收藏】