Sheet Metal Bend Relief Guidelines

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.

Sheet metal bend relief guidelines.

If it is ok for the metal to rip the minimum bend relief is zero. Center to center distance between two holes. For the ease of manufacturing multiple bends on the same plane should occur in the same direction. 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.

How to design good sheet metal parts hole slot distance from bend edge. Keeping the bend radius consistent will also make parts more cost effective. Bends should be toleranced plus or minus one half degree at a location adjacent to the bends. Design for manufacturability sheet metal guidelines bends for the ease of manufacturing multiple bends on the same plane should occur in the same direction.

This is an example of dfm guidelines for sheetmetal fabrication. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend. Grain structure in the metal sheet is critical for avoiding cracks in sheet metal parts with lugs or tabs that are cut on. Hole to form distance from hole to form to avoid hole distortion place holes no less than 2 5.

Bend relief and collars near pierced areas strengthen sheet metal parts. Minimum center to center distance between two holes in sheet. Avoid large sheet metal parts with small bent flanges. Sheet metal bending should be as perpendicular as possible to the direction of the metal fiber.

One benefit of a bend relief is that it makes the part easier to produce. Sheet metal design guidelines. In low carbon steel sheet metal the minimum radius of a bend should be one half the material thickness or 0 80 mm. Minimum distance between hole slot edge to bend edge is recommended to avoid metal.

Sheet metal bend brakes are used to bend material into the parts desired geometry.