Bending Sheet Metal Circle

Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape.

Bending sheet metal circle.

This black area is our bend allowance. Bending is one of the most common sheet metal fabrication operations. The force must exceed the material s yield strength to achieve a plastic deformation. The bend radius refers to the inside radius.

If you tried to make a sharp 90 bend the metal would likely crack. If the sheet is anisotropic the bending should be performed in the preferred direction. Roll bending or curving as defined here designates the manufacture of sheet metal parts that are rolled or curved into cylindrical shapes or shapes that have a smooth radius associated with them. The bend deduction is the amount the sheet metal will stretch when bent as measured from the outside edges of the bend.

As an example if you want to bend 24 gauge sheet metal at a 90 angle the calculation would be. 0 017453 x 90 x 0 020 0 33 x 0 024 0 0438558984 inch bend allowance. This is putting a simple hem on a curved piece of zinc with a 7ft radius. Simple sheet metal bender using a hand roller clamps and plywood.

This is done through the application of force on a workpiece. The formed bend radius is dependent upon the dies used the material properties and the material thickness. There are two basic frame designs. 1 horizontal 2 vertical.

A sharp 90 bend means that the material must go all the way to the corner while the radius bend cheats the corner. To ascertain your k factor inside radius and material thickness expressed as a decimal you should use an bend allowance chart. Monkeys spinning monkeys by kevin macleod. The u punch forms a u shape with a single punch.

A test to determine anisotropy is discussed in the sheet metal forming section. The pre bent material would have this black area which is formed into the bend.