Force Required To Bend Sheet Metal Box Brake

This jmt calculator calculates a force representative of the press brake tonnage required for air bending based on your material thickness type length vee die width and your smallest bend radius.

Force required to bend sheet metal box brake.

Therefore even a simple bench with enough room to bend 3 m pieces will do the job. The relationship is inversely proportional so if the v opening is doubled the tonnage will be halved. The force pressed on the sheet metal during bending is different the counterforce is also different. 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.

By using the press brake tonnage calculator we have made for this purpose you only need to enter the sheet metal thickness the bending length and our recommended vee opening width the calculator will show the required bending force. My workpiece s bending line is 3 m so the overall needed force is 3 22 66 tonnes. I want to know the force required to bend a piece of sheet metal in a hand bending brake. We call this restore rebound.

Of course if you want to know exactly how the tonnage of the press brake is calculated you can refer to the. The sheet metal is clamped down and then bent upwards to a desired angle. The bending force can be calculated from the sheet thickness die opening bend length and the ultimate tensile strength of the material. But figured the relative force required to bend would be relevant.

The action is performed in the video below. Bending aluminum sheet metal on manual finger brake hello folks this is my first post on this forum after lot lurking. 1 when using the same punch with the same thickness of the material the resilience value spcc al sus. So the larger the v opening the larger the minimum leg or flange we must have on a profile.

Once eliminate the pressing force the angle will also bounce back in downsizing direction. Nevertheless i would expect 5mm plate to be prone to cracking when formed in a box and pan especially if you bend along the grain. Don t forget that we must have our sheet metal in direct contact with the die shoulders at all times during the bending process. If we fail to do this the smaller than required leg will fall into the v opening and our bend will be imprecise.

The die ratio may be entered to calculate the die opening which is typically 6 to 18 times the sheet thickness. Calculate the tonnage required to complete a 90 bend with a hydraulic press brake.