白车身抗凹性能仿真实验研究

Experimental Study on Anti-concave Performance of White Body

在车身轻量化的大背景下,本课题针对白车身抗凹性问题提出了一种新的测试方案。但在整体方案中必不可免的出现了一些误差,比如传感器的安装误差、压头与工具坐标系轴线之间的误差以及传感器安装法兰的制造误差等,针对这些误差问题,本文设计了一套全新的标定方法,并结合先进的数字控制技术,采用高精度,数字化,自动化的抗凹性验机系统。开发了面向实际车身覆盖件抗凹性测试。经过实际检测与软件仿真之后,本文所介绍的新型白车身抗凹性实验系统达到了实验所要求的精度,能够做到精确找准被测试点的法线。证明这种试验方法的能够代替传统方法对白车身的抗凹性进行高精度的检测。

Under the background of lightweight body,this topic proposes a new test scheme for the white body anti-concavity problem.However,some errors must be inevitable in the overall scheme,such as the installation error of the sensor,the error between the axis of the indenter and the tool coordinate system,and the manufacturing error of the sensor mounting flange.For these error problems,this paper designs a A new calibration method,combined with advanced digital control technology,uses a high-precision,digital,automated anti-concave inspection system.Developed anti-concave testing for actual body panels.After the actual test and software simulation,the new white body anti-concave experimental system introduced in this paper achieves the accuracy required by the experiment,and can accurately find the normal of the tested point.It is proved that this test method can replace the conventional method to detect the concave resistance of the body-in-white with high precision.