Contact

On demand. On time.

247TailorSteel contact details

map

The Netherlands

247TailorSteel B.V.
Markenweg 11
7051 HS Varsseveld
The Netherlands
+31 315 270 375
sales@247tailorsteel.com

Germany

247TailorSteel GmbH
Holzweide 1
28307 Bremen
Germany
+49 421 696 75 247
verkauf@247tailorsteel.com

Belgium

Fabrieksstraat 145
3900 Overpelt 
Belgium
+32 11 922 404
sales@247tailorsteel.com

Luxembourg

Maarten van den Dungen
+31 681 509 917
maarten.vandendungen@247tailorsteel.com

Bending guidelines

Index

Versie 1.0 10/10/2017

General

  • Maximum sheet thickness for steel and aluminium is 6 mm.
  • Maximum weight for stainless steel is 5 mm.
  • Maximum weight is 40 kg.
  • Maximum dimensions are 2980 x 1200 mm.

Tolerances

Tolerances will always be symmetrical in respect of the nominal dimension.

  • Angle accuracy: ± 0,5˚.
  • Leg length (per setting): ± 0.2 mm.

Bending-guidelines_1Bending-guidelines_2

Bending-guidelines_3Bending-guidelines_4

Radius

The internal radius is determined by the tool in combination with the material properties.

Sophia will adjust the drawn radiuses to realise form retention of the end product. Draw at least an internal radius of 0.5 * sheet thickness to prevent problems with corners. 

For reference, these internal radiuses can be used at an angle of 90 degrees.

 

Material thicknessSteelStainless SteelAluminium
1 mm

1,40

1,581,27
1,5 mm

1,87

2,201,65
2 mm

2,48

3,002,16
2,5 mm

3,82

4,613,20
3 mm

3,70

4,553,30
4 mm

3,37

5,673,92
5 mm

4,53

7,655,03
6 mm

4,53

-5,29

Large/Conical radiuses

Large radiuses, of which the form is functional, or conical radiuses, must be segmented in small bends. To this end, consider the minimum leg length.


Manufacturability

Minimum leg length

Bending-guidelines_5This is the minimum overlay of the plate on the mould to facilitate bending. The minimum leg length (b) is determined by the sheet thickness.

 

 

Steel and aluminiumGroove width (w)Leg length (b)
1 mm

8 mm

6,3 mm
1,5 mm

10 mm

7,6 mm
2 mm

12 mm

9,2 mm
3 mm

16 mm

11,7 mm
4 mm

24 mm

17,7 mm
5 mm

30 mm

21,7 mm
6 mm

40 mm

29,7 mm

 

Stainless SteelGroove width (w)Leg length (b)
0,8 mm

8 mm

6,3 mm
1 mm

10 mm

7,6 mm
1,5 mm

12 mm

9,2 mm
2 mm

16 mm

11,7 mm
3 mm

24 mm

17,7 mm
4 mm

30 mm

21,7 mm
5 mm

40 mm

29,7 mm

Minimum distance from the hole to the bending line

A distinction is made between the slotted holes and the round holes. The minimum distance Ymin can be determined by the fomulas:

 

Bending-guidelines_6

Minimum distance for round holes
Ymin. = Rj + 2S


Bending-guidelines_7

Minimum distance for slotted holes
L < 25: Ymin. = Rj + 3S
L 25: Ymin. = Rj + 4S


 

An incision can be made on the bending line when the hole must come even closer to the bending line.

Cutting line conditions:

  • Length = minimum length hole (A)
  • Width = 0.8 x sheet thickness (B)

Bending-guidelines_8


Hemming

247TailorSteel does not produce hemming.

 

Bending-guidelines_9


Minimum width bend

Our narrowest tool 20 mm. This should be considered in case of bends shown in the image below. There must therefore be sufficient space for the mould to carry out the bending.

bending-guidelines_10_EN


Maximum bend angle

Bending-guidelines_11

Because of the rebound of the material, the sheet must always be bent slightly more than the specified angle. The tool has a maximum angle of 30˚ and this facilitates, with due consideration to the rebound, bending of up to 37˚.

Steel/Aluminium:
Up to and including 4 mm: 37˚
5 mm: 67˚
6 mm: 85˚

Stainless Steel:
Up to and including 3 mm: 37˚
4 mm: 67˚
5 mm: 85˚


Collision with tool/machine

The manufacturability is largely dependent on the tools used. 247TailorSteel has special D-tools for manufacturing U-shapes. U-shapes up to 5 mm steel and 4 stainless steel are bent with a D10 tool to prevent overloading of the tool. U-shapes up to 6 mm steel and 5 stainless steel are bent with a D10 tool. However, there is a restriction regarding the feasible width-height ratio of the U-profile. See the figures below to determine the feasible width-height ratio.

Bending-guidelines_14Bending-guidelines_15


Minimum X-dimension in case of Z-bending

Due consideration must be given to the minimum X-dimension as included in the table to prevent collision with the tool in case of so-called Z-bending.

Bending-guidelines_12bending-guidelines_13_EN

 

Sheet thicknessMinimum X-dimensionGroove width
0,8 mm

8 mm

V8
1 mm

8 mm

V8
1,5 mm

11 mm

V10
2 mm

14 mm

V12
2,5 mm

19 mm

V16
3 mm

20 mm

V16
4 mm26,5 mmV24
5 mm

33 mm

V30
6 mm40 mmV40

Changelog

DateChange TypeDescription
10/10/2017
  • Publish
Page published