Due to the continuous improvement of production technology and efficiency, the backward production technology of manual straightening of workpieces in the past is not only time-consuming but also laborious. Therefore, the application of edge finding and edge patrol technology was born to meet the needs of the times. The application scope of this technology is very wide. The edge-seeking advertising engraving machine and the edge-patrolling advertising engraving machine are essentially the same thing. It’s just that no one regulates this thing, so there are many names for it.