When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched.
Bend table sheet metal.
The bend radius of a sheet metal design will be based on the wall thickness of the part and the tooling that is available in house.
Understanding the bend deduction and consequently the bend allowance of a part is a crucial first step to understanding how sheet metal parts are fabricated.
Exemple 1 for metal sheet bending tables.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
Geometry of tooling imposes a minimum bend dimension.
Sheet metal bend radius.
All bend table types bend deduction bend allowance and k factor.
You can generate flat patterns by unfolding sheet metal features using a uniformly applied.
Each column specifies a bend radius.
Each row in a bend table specifies a bend angle.
Refer to table s for your choice of material.
When unfolding if a bend radius or angle does not correspond to a specific entry a process interpolates between adjacent values in the table.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
Refer to the chart for values for folder as well as various press brake tooling combinations.
A section view of a typical punch and die set used to create sheet metal bends.
Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.
When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched.
To create your own bend table copy and edit this bend table with any text editor.
To use the tables below.
A bend table is a table of bend deductions arranged in rows and columns.
Since gauge tables were introduced all the parameters can be controlled base on the drop down selection which makes life much easier.
The diagram shows one such mechanism.
A sample bend table for sheet metal operations is provided in install dir lang english sheetmetal bend tables sample btl.
We have a metal sheet of 3 m m thickness in iron with a hardness of 42 48kg mm2 if we go to the top of the table we see the thicknesses in brown we look at the 3 thickness of the sheet and we go down to the blue box we see a value of 240 this is in kn mm2 and if we take a 0 it will be in ton.
Bend tables created as a text file support the following.
The second important number when creating sheet metal designs is the bend radius value.
0 060 crs 2 000 2 000 r0 031 aluminum 90 deg.
