Bending Sequence Sheet Metal

Examples of sheet metal components.

Bending sequence sheet metal.

Sheet metal bend sequence planning is a complex combinatorial problem. Both sides of the part move up and leave the plane. In order to carry out the bending operations a sheet of metal is placed on a die up against a backgage to locate the part precisely as shown in fig. On a sheetmetal drawing with numerous bends use bend notes to show the direction angle and bend radius of each bend.

1 the machine is then commanded to close the gap between the punch and die. In the sheet metal industry skilled operators perform bending of sheet metal parts. Inventor 2009 windows xp 32 bit excel 2000. Sheet metal bending is the plastic deformation of the work over an axis creating a change in the part s geometry.

Taking the sheet metal in figure 8 as an example if the bending sequence is arranged without adhering to proper bending rules and two p type bends are performed before the ω type bend then interference will occur at the ninth bend operation. The operator holds and supports the weight of the blank. Figure 279 shows a simple sequence used to produce a channel. Sheet bend design 4 machining set up planning 5 and three roll bending 6.

For bending the upper ram moves down into the lower die. Tools and tool stages can be reused in a sequence depending on length of tool stage. This combination allows the. This is shown in figure 11.

While planning for its manufacture it is important to select proper tools tool stages and sequence for collision free bending at every stage. In the present study the optimum bend and set up sequence in sheet metal forming is determined by combining the tolerance anal ysis with fuzzy reasc ning. Similar to other metal forming processes bending changes the shape of the work piece while the volume of material will remain the same. Bending sequence during the bending sequence the blank is positioned outside the machine.

What i need to do is show the sequence for bending. Collinear bends can be performed in a single operation. Bending is one of the vital operations to obtain a three dimensional 3d shape in a sheet metal component. Ie identify the order in which the piece should be bent.