Edge Distance For Holes In Sheet Metal

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.

Edge distance for holes in sheet metal. The strength of riveted met. The minimum distance between holes is directly proportional to the size and shape for the hole feature and the material thickness. Flush head rivets require an edge distance of at least 2 1 2 times the diameter. Extruded holes very close to the part edge can lead to sheet metal deformation or tearing.

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. If rivets are placed to close to the edge of the sheet the sheet is apt to crack or pull away from the rivets. Center of extruded holes a 5 hole dia 2t extruded hole and bend edge c 3t r d 2. Minimum 2 times material thickness between hole and edge of sheet.

The minimum distance the edge of a hole should be from a form is three times the material thickness plus the bend radius. If they are placed too far away from the edge the sheet is apt to turn up at the edge. For holes the minimum distance between the hole s edge is 2 times the material thickness plus the hem s radius. Minimum 2 times material thickness between holes.

Therefore the minimum distance between the extruded hole to edge if maintained. 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. Usually the preferred distance between holes and a bend is 1 5 times the sheet thickness plus the bend radius 1 5 t h. Supplying 3d models without considering these factors increases the.