Bending Sequence Sheet Metal

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.

Bending sequence sheet metal.

On a sheetmetal drawing with numerous bends use bend notes to show the direction angle and bend radius of each bend. Tools and tool stages can be reused in a sequence depending on length of tool stage. Bending sequence during the bending sequence the blank is positioned outside the machine. Process planning and tolerance reasoning for sheet metal forming are critical to reduce manufacturing time and to address.

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. Inventor 2009 windows xp 32 bit excel 2000. For bending the upper ram moves down into the lower die. Examples of sheet metal components.

Sheet bend design 4 machining set up planning 5 and three roll bending 6. Anyone have thoughts on how to accomplish this. A linear ram movement results in the bend angle. Sheet metal bend sequence planning is a complex combinatorial problem.

This combination allows the. If parts are handled by a robot the best grasping positions for each bending and the number of repositions must be indicated in advance. The operator holds and supports the weight of the blank. In the sheet metal industry skilled operators perform bending of sheet metal parts.

While planning for its manufacture it is important to select proper tools tool stages and sequence for collision free bending at every stage. Collinear bends can be performed in a single operation. This is shown in figure 11. Abstract in the present study a method is proposed which generates bending sequences of a sheet metal part handled by a robot.

Using the proposed method feasible bending sequences with grasping positions are obtained and the sequences are sorted in the. Ie identify the order in which the piece should be bent. Bending is one of the vital operations to obtain a three dimensional 3d shape in a sheet metal component. 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.