Sheet Metal Hinge Forming

Forming hinges in a turret or rail style punch press is a challenging application but a highly rewarding one when the fabricator understands the relationship among the required hits locations and stroke settings.

Sheet metal hinge forming.

Hinges formed in a punch press are created by standing up a tab and then curling it over using three forming steps. To help ensure that the curve for the rounded hinge opening would be a consistent angle with a minimum of effort marlin s manufacturing team used a bottom bending method. Like show 0 likes 0.

Panel fasteners and other types of pem hardware can be added to bolster sheet metal parts or provide threads for assembly. This forming stroke bends the tab up to a designed angle. The spring loaded lower assembly or die pushes the sheet off the lower insert before the sheet advances to the next forming location. Using bottom bending to ensure consistent shapes in the hinge.

Basically this means that when the sheet metal plate is put in marlin s press brake it presses the sheet metal all the way into the die rather than just partway into the die this alternate process is called air bending. The cpr process is the fourth operation of hinge manufacturing in. Another common sheet metal forming process is bending.

Question asked by christopher estelow on jun 15 2012 latest reply on jun 16 2012 by roland schwarz. Design hub in this tutorial video i will show you how to use forming tool in sheet metal in this video you lean forming tool as well sheet metal bonet with. This paper focuses on the modeling of metal response when subjected to sheet forming operation called cold plastic rolling cpr. I was wondering if anyone could point me in the right direction on how to make the rolled part of the hinge in the attached picture.

Thick or less and 1 8 in. The final forming stroke uses forming tool 2 or the knuckle tool which curls the angled tab to form a hinge. The sheet metal is placed over a die block at which point a punch presses down. Holes and slots these should be placed at least 1 16 of an inch from the nearest wall or part edge for materials 0 036 in.