Sheet Metal Bend Relief Guidelines

In low carbon steel sheet metal the minimum radius of a bend should be one half the material thickness or 0 80 mm.

Sheet metal bend relief guidelines.

Avoid large sheet metal parts with small bent flanges. Design for manufacturability sheet metal guidelines bends for the ease of manufacturing multiple bends on the same plane should occur in the same direction. Sheet metal bend brakes are used to bend material into the parts desired geometry. One benefit of a bend relief is that it makes the part easier to produce.

Bends should be toleranced plus or minus one half degree at a location adjacent to the bends. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend. Minimum center to center distance between two holes in sheet. How to design good sheet metal parts hole slot distance from bend edge.

In general a minimum bend relief is equal to the material thickness plus the inside bend radius. Sheet metal design guidelines. This is an example of dfm guidelines for sheetmetal fabrication. Minimum distance between hole slot edge to bend edge is recommended to avoid metal.

Bends that are in the same plane need to be designed in the same direction to avoid part re orientation to save both money and time. Avoid large sheet metal parts with small bent flanges. Grain structure in the metal sheet is critical for avoiding cracks in sheet metal parts with lugs or tabs that are cut on. Sheet metal bending should be as perpendicular as possible to the direction of the metal fiber.

Keeping the bend radius consistent will also make parts more cost effective. Hole to form distance from hole to form to avoid hole distortion place holes no less than 2 5. If it is ok for the metal to rip the minimum bend relief is zero. Bend relief provide bend relief along l shaped features width 2 t and depth t r edge bulging restrictive tolerances on v bends may result in edge bulging provide bend relief accordingly.

For the ease of manufacturing multiple bends on the same plane should occur in the same direction.