Ling He, Yao Xuzhao, Lu Hong, Zhang Yongquan, Wang Zihao, Qin Yaoqing
Appl Opt. 2022 Aug 20;61(24):7133-7139. doi: 10.1364/AO.460230.
The guideway deformation control of the straightening process is the basic method to ensure straightening accuracy. The prediction of and compensation for springback in the straightening process of a guideway adopts mostly numerical analysis and finite element analysis methods instead of experimental methods because of the measuring difficulty of actual springback. In this paper, a method is proposed to detect bending deformation during the straightening process, which provides a reference for the relevant manufacturing processes. Digital image correlation measurement technology is adopted for the detection of bending springback, which can measure the full-field displacement distribution without contact and with high precision. The experimental results show that digital image related technology can very accurately detect the deformation of the guideway straightening stroke and bending springback deformation. This study can help to control bending deformation during the straightening process and ensure straightening accuracy, providing a reference for real-time monitoring of straightening force.
导轨校直过程中的变形控制是保证校直精度的基本方法。由于实际回弹测量困难，导轨校直过程中的回弹预测与补偿大多采用数值分析和有限元分析方法，而非实验方法。本文提出一种在校直过程中检测弯曲变形的方法，为相关制造工艺提供参考。采用数字图像相关测量技术检测弯曲回弹，该技术可无接触、高精度地测量全场位移分布。实验结果表明，数字图像相关技术能非常准确地检测导轨校直行程中的变形及弯曲回弹变形。本研究有助于在校直过程中控制弯曲变形并确保校直精度，为校直力的实时监测提供参考。
