Edge Distance For Holes In Sheet Metal

Usually the preferred distance between holes and a bend is 1 5 times the sheet thickness plus the bend radius 1 5 t h.

Edge distance for holes in sheet metal.

Supplying 3d models without considering these factors increases the. A look at the formula for the edge distance or setback that is required when drilling rivet holes near the edge of a metal sheet. The strength of riveted met. Flush head rivets require an edge distance of at least 2 1 2 times the diameter.

Though these calculations can help you approximate the minimum distance you ll need to place between a hole and the edge or bend in sheet metal different situations call for different specifications. If rivets are placed to close to the edge of the sheet the sheet is apt to crack or pull away from the rivets. The minimum distance the edge of a hole should be from a form is three times the material thickness plus the bend radius. In most cases minimum hole bend distance equals 1 5 times sheet thickness plus bend radius though the multiplying factor may increase as hole size increases in diameter.

Extruded hole to part edge b 3t d 2. Extruded holes very close to the part edge can lead to sheet metal deformation or tearing. Recommended minimum distance between holes between forms and from edges of sheets if holes and forms are placed any closer to each other or to edges of sheets than is given below they may distort each other or the material. Minimum 2 times material thickness between holes.

The minimum distance between holes is directly proportional to the size and shape for the hole feature and the material thickness. If they are placed too far away from the edge the sheet is apt to turn up at the edge. For bends the minimum distance between the inside edge of the bend and the outside of the hem should be 5 times material thickness plus bend radius plus hem radius. Therefore the minimum distance between the extruded hole to edge if maintained.