Punched belt hole position deviation analysis of float type water level gauge

The key parts of the float type water level gauge instrument is perforated belt, The size and tolerance requirements of its aperture is: (1) alternation of 100+0.2 and 100-0.2, (2) 200±0.1, (3) 1000±0.15, (4) 10000±0.2. The single hole position: alternation of 100+0.2 and 100-0.2; double: 200±0.1, and ensure the best hole position error avoidance tends to be one-way, that is to say: when the punched belt combined with a water wheel rotating line moving, The hole position error to single direction increase or decrease, caused the water level nail gradually and close to the edge of the hole, and then edge and final punched belt was lifted. This paper uses the laser drilling process of steel strip for data collection and analysis. It is found that this method cannot meet the tolerance requirements and the double stamping processing method with adjustable cylindrical pin is feasible.