Bending Sequence Sheet Metal

Both sides of the part move up and leave the plane.

Bending sequence sheet metal. While planning for its manufacture it is important to select proper tools tool stages and sequence for collision free bending at every stage. Examples of sheet metal components. Bending is one of the vital operations to obtain a three dimensional 3d shape in a sheet metal component. A linear ram movement results in the bend angle.

Sheet metal bend sequence planning is a complex combinatorial problem. 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. What i need to do is show the sequence for bending.

Process planning and tolerance reasoning for sheet metal forming are critical to reduce manufacturing time and to address. On a sheetmetal drawing with numerous bends use bend notes to show the direction angle and bend radius of each bend. Figure 279 shows a simple sequence used to produce a channel. Ie identify the order in which the piece should be bent.

Sheet metal bending is the plastic deformation of the work over an axis creating a change in the part s geometry. Collinear bends can be performed in a single operation. 1 the machine is then commanded to close the gap between the punch and die. Similar to other metal forming processes bending changes the shape of the work piece while the volume of material will remain the same.

In the sheet metal industry skilled operators perform bending of sheet metal parts. This is shown in figure 11. This combination allows the. The operator holds and supports the weight of the blank.

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. Tools and tool stages can be reused in a sequence depending on length of tool stage. 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. 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.