An experimental study on the die roll height according to the V-ring distance of the fine blanking tool for the seat recliner holder with various corner shapes

In this paper, the relation between die roll height and V-ring distance of a fine blanking tool was studied by experimenting on a special designed seat recliner holder with various corner shapes. Three guide plate inserts with different. V-ring distances and a die insert with constant die chamfer were machined, and a fine blanking tool was manufactured for the experiments. Three experiments were conducted on a 650-ton fine blanking press. Each die roll height on the sample from the experiments was measured and analyzed. It should be noticed that the die roll heights on the corner shapes of fine blanked parts increase with increasing the distance between the V-ring distance, and decrease with increasing corner radius and angle. These results can be used to minimize the die roll height of fine blanking parts with corner shapes when designing the V-ring of a fine blanking tool.