Force Required To Bend Sheet Metal

As a result the wipe die also determines the bend s inner radius.

Force required to bend sheet metal. The bending force can be calculated from the sheet thickness die opening bend length and the ultimate tensile strength of the material. However angles greater than 90 degrees will require more complex equipment capable of some horizontal force delivery. The action is performed in the video below. Its yield strength is about 30 000 psi.

If we were to estimate force needed to bend only the two indentations it would be just 2f. Edge bending is another very common sheet metal process and is performed with a wiping die. Actual bending force is affected by many factors such as friction between the material and the die material thickness material strength variations rolling direction of the steel work hardening and other parameters. Tensile strength is the amount of force required to tear or pull apart the metal.

It is important to make sure that the sheet is properly pushed onto the wipe die. I want to know the force required to bend a piece of sheet metal in a hand bending brake. The bending force can be calculated from the sheet thickness bend length die edge radius punch edge radius and. Calculate the required force to bend a piece of sheet metal using wipe bending also called edge bending.

304 stainless has a tensile strength of about 75 000 psi. Edge bending gives a good mechanical advantage when forming a bend. The sheet metal is clamped down and then bent upwards to a desired angle. In this process the sheet is held between a wipe die and pressure pad while a punch presses against the edge of the sheet.

Wipe bending or edge bending is another way to bend sheet metal edges. The relationship between the v opening and the required tonnage is straight forward the larger the v opening the less tonnage is required to bend the metal. The die ratio may be entered to calculate the die opening which is typically 6 to 18 times the sheet thickness. Let s say i wanted to bend a piece of 032 thick al 3 long to 110 given the brake was able to make this degree of bend.

But because there is some extra force spent on dragging the sheet up the inclined walls of the center ridge it s sate to allow 2 5 f. The strength of the table is the force required to bend sheet metal up to 1 m in length. The slack between the wipe die and the punch plays an important role in getting a good result. The relationship is inversely proportional so if the v opening is doubled the tonnage will be halved.