The operations are 1 the guerin process and 2 hydro forming guerin process the guerin process uses a thick rubber pad or other flexible material to form sheet metal over a positive form block as in figure 20 28.
Rubber pad forming process pdf.
At this stage the flexible punch rubber pad is fixed on the arm of a pressing.
The rubber pads can have a general purpose shape like a membrane.
The rubber pad is confined in a steel container.
The rubber die is forced on the blank and deform the blank into require shape.
Rubber pad forming is a sheet forming process in which one or more product related molds.
Up to 60 of all sheet metal parts in aircraft industry such as frames seat parts ribs windows and doors are fabricated using rubber pad forming processes.
The rubber pad forming process is also called as guerin process.
During the rubber pad forming process the punch deforms the blank and apply large pressure 100 mpa over the blank.
Rubber forming adopts a rubber pad contained in a rigid box in which one of the tools die or punch is replaced by the rubber pad.
The die is placed on lower bed and top of that soft die of rubber is placed.