Bending Corners In Sheet Metal

The force must exceed the material s yield strength to achieve a plastic deformation.

Bending corners in sheet metal.

A short video showing how to bend an outside corner demonstrated on a pro series metal bending machine but applicable to most machines. Bend reliefs in sheet metal. If you bend to a sharp inside corner with sheet metal you ll be adding a ton of internal stresses. Geometry of tooling imposes a minimum bend dimension.

I have tried various ways in sheetmetal to fill the corner in and currently only a sweep fills in the corner but only as a surface. The diagram shows one such mechanism. Bending sheet metal by hand is a manageable task if the piece of sheet metal is small and thin enough to handle. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape.

Refer to the chart for values for folder as well as various press brake tooling combinations. Don t bend to a sharp internal corner. If no relief distance is called out on the print and you are using a large bend radius with this type of notch then to be safe use a minimum distance of the material the bend radius. Even on malleable materials you can end up cracking the metal at the bend or weakening it to the point where it ll break with minimal force.

This is done through the application of force on a workpiece. The part was originally a solid model shown below and am attempting to create filled corners in sheetmetal because the part is made that way. See the pic below for solid model corner. Most frequently expensive sheet metal bending tools called brakes are used to bend sheet metal but you can also complete this task without one.

Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.