激光测量高精度铜带箔离线板形的开发与实践

The Development and Practice of Laser Measurement of Offline Flatness of High Precision Copper Strip Foils

由于目前高精度铜带箔材生产中尚无精确测量离线板形的仪器,而在实际生产中离线板形与轧制中的在线板形存在较大偏差,为了实现对铜带箔材离线板形的精确测量,改善轧制板形控制工艺,提高产品板形的质量控制,开发了一种结构简单、运行方便且成本低廉的离线板形测量装置.该装置利用一字型激光照射在离线微小张力的铜带箔材表面,在其表面形成的反射光照射到固定的屏幕上,通过数码照相机或摄像机将其映像拍下送入计算机中.根据光学三角测量原理和国际通用的板形定义及其计算公式,用Borland公司的C++Builder语言编程处理该图像,经过数字化处理后得出板形(平直度)值,从而在带卷加工过程和成品质量控制中发挥积极作用.

At present,no instrument is available in the market to measure the accurate offline flatness of a high precision copper strip foil, and there exists great deviations between the offline flatness in actual production and online flatness of roiling. To provide the accurate offline flatness measurement of a copper strip foil and to improve the rolling flatness controlling process and the product flatness quality control, we have developed an offline flatness measurement system characterized by simple structure, easy operation and, and low cost. A liner laser is irradiated to an offline small-tension copper strip foil and the light is reflected onto a fixed screen. The image on the screen is photographed and transferred into a computer. Based on the optical triangulation principle and the international flatness definition and formula, the image is digitally processed and the flatness is calculated through the Borland C＋＋Builder programming. The technology will play a positive role in the coil processing and quality control of the final product.