Creation of function of information transmission by micro-metalforming of surface microgeometry utilizing technology of plasticity

在工件表面进行受控腔体微成形是一种很有前途的金属成形技术，虽然目前还不普及。因此，金属表面可以具有可靠和持久的信息传输功能，例如可用于质量控制、回收和处理工业零件。然而，通常金属成形需要一套适合生产几何固定零件的工具，并且与要传递的各种信息相对应，在适应各种几何形状方面存在一定的困难。在本研究中，通过PC软件将数字和字符转换为数据矩阵和QR码的二维条形码符号。将符号图像输出到pc控制的点冲击机，然后用锥形点冲击针将符号的所有白色单元点在金属样品上，例如抛光的不锈钢板上。网点间距固定在0.12 mm，网点直径范围从28到6…根据机器的设置，更多8克。即使是300个字符的虚线标记也能被pc控制的光学系统快速解码，该系统支持直接标记，配备有CCD微距镜头和环形光导。下一步，对于用于创建信息的小样本或小区域，在金属成形和使用基于pc的光学测量系统解码二维条形码方面，探索表面空腔小型化的可能性。在镜面加工的金属板上成功地形成了16倍840 DPI、30 μm间距的高密度点并进行了解码。微型化的限制是将表面空腔的直径限制在点间距的120%以内。此外，还考察了工件表面粗糙度的影响，验证了该方法的适用性。通过增强照明角度的倾斜和/或额外的图像处理来增强背景和点状腔之间的光学对比度，成功地解码了毛线成品或磨损的试件。少

Microforming of controlled cavities on workpiece surfaces is a promising application of metal forming although it is not yet popular. Metallic surfaces can thus have the function of reliable and durable information transmission that can be used, for example, in quality control, recycling and the disposal of industrial parts. However, usually metal forming requires a set of tools that is suitable for producing geometrically fixed parts and has some difficulties adapting to various geometries corresponding to various information to be transmitted. In this research, numerals and characters are converted into two-dimensional bar code symbols of the Data Matrix and QR Code by a PC software. The symbol images are exported to a PC-controlled dot impact machine and then all the white cells of the symbol are dotted onto a metal sample, for example a polished stainless steel plate, by a cone-shaped dot impact pin. The pitch of dots is fixed at 0.12 mm and the diameters of dots range from 28 to 6 … More 8 gm depending on the setup of the machine. Dotted marks of even three hundred characters are rapidly decoded by a PC-controlled optical system that supports direct marking and is equipped with a CCD macro-lens and a ring light guide.In the next step, for small samples or small areas for creating information, a possibility of miniaturization of surface cavities is explored in terms of metal forming and decoding of the 2D barcode with a PC-based optical measuring system. It was found that 16-times high-density dots of 840 DPI with a pitch of 30 μm on a mirror finished metal plate was successfully metalformed and decoded. The limitation of miniaturization was to limit the diameter of surface cavities within 120% of pitch of dots. In addition, the effect of surface roughness of workpiece is examined to check the applicability of this method. Hair-line finished or abraded test pieces were successfully decoded with an enhanced inclination of lighting angles and / or additional image processing for enhancing optical contrast between background and dotted cavities. Less