The required die width is 12 mm and tonnage per meter is 22.
Sheet metal bending radius chart in mm.
Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer.
I can now see that the minimum flange length is 8 5 mm for such a bend so i have to keep it in mind when designing.
Material bend radii and minimum bend size charts please note.
Cells on the right will output the desired values.
Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.
Discover all our calculation tools in the calculators section of the top menu.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
V die width is 6 8 times the plate thickness.
The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.
To keep it simple i also use a 2 mm inside radius.
The bend radius you select may not be available if the geometry of the part will not allow us to bend with the specific tooling required to achieve that radius.
Please check the new method for calculating the bending force of a press brake machine.
Specifing a bend radius from here will help prevent hair line cracks.
Calculate unfold size with bend allowance chart.
The following bending force calculator should be used.
You only have to insert interior angle flange lengths k factor inside radius and material thickness.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.
Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.
Bend forming 0 l a b 0 43t t thickness deduction 0 43t.
The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force.
If the width to thickness ratio v s is not equal to 9 and the diameter to width ratio is not equal to 0 16 the above calculator will no longer be applicable.
Recommended minimum bend radii for steel and aluminum.
Table 1 preferred recommended 90 degree bend radii for various sheet metals.
L unfold length a outside size b outside size k k factor none 90 bend unfold according to the neutral layer the distance from neutral to sheet inner side is t 3 inner r can refer to the above chart.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
With this free online tool we quickly get the sheet metal bend deduction and therefore the sheet metal blank initial flat length from the finished part measurements.
This tool allows you to determine tonnage internal radius v die opening and minimum flange you just have to insert the characteristics of the sheet metal to be bent.
You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.
The material thickness will be measured in decimal form not by the gauge number.
