| |
TECNOSTAMP STORE |
Toolings production for press brakes |
| |
|
|
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
|
BENDING HELP |
| |
Egypt| welcome in Tecnostamp |
| Tecnostamp: Comparison between bending techniques |
|
AIR PARTIAL BENDING |
|
BOTTOMING |
|
COINING |
|
Kind of bending
|
V - Width
|
Ir |
Bending angle dispersion
|
Bending precision |
Feature |
| Partial air bending |
12T-15T |
2T-2.5T |
ABOUT +/-45' |
FORMS SURFACE with large curvature radius |
Weak force for this kind of bend, but hight springback |
| Bottoming |
6T-12T |
1T-2T |
ABOUT +/-30' |
GOOD |
Good precision is obtaiable using a reltively weak force |
| Coining |
5T |
0.5T-0.8T |
ABOUT +/-15' |
GOOD |
Very good precision is obtainable, but the tonnage required is 5-8 times that required in bottoming |
| Sheet thickness (mm) |
0.5-2.5 |
3-8 |
9-10 |
12 o più |
| V- vidth(mm) |
6T |
8T |
10T |
12T |
|
|
| BENDING SCHEME |
| |
Tecnostamp | V.2.2011/ |
|
| T= Thickness of the sheet in mm |
| F= Force in Ton/metro |
| ri= Inside radius |
| b= Shortest edge to be bent |
| v= V opening |
|
|
| Calculation of force for air bending |
|
| Alluminium |
R=20-25 Kg/mmq |
| Mild steel |
R=40-45 Kg/mmq |
| Stainless steel |
R=65-70 Kg/mmq |
|
|
CHART BY BENDING IN THE AIR - Need force for 90° air bending, sheet resistance R=45Kg/mmq |
T
|
6 |
8 |
10 |
12 |
16 |
20 |
25 |
32 |
40 |
50 |
63 |
80 |
100 |
125 |
160 |
200 |
250 |
V |
4 |
5.5 |
7 |
8.5 |
11 |
14 |
17.5 |
22 |
28 |
35 |
45 |
55 |
71 |
89 |
113 |
140 |
175 |
b |
1 |
1.3 |
1.6 |
2 |
2.6 |
3.3 |
4 |
5 |
6.5 |
8 |
10 |
13 |
16 |
20 |
26 |
23 |
41 |
ri |
0.5 |
3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.6 |
4 |
4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.8 |
7 |
5 |
4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
11 |
8 |
7 |
6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1.2 |
16 |
12 |
10 |
8 |
6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1.5 |
|
17 |
15 |
13 |
9 |
8 |
|
|
|
|
|
|
|
|
|
|
|
|
2 |
|
|
27 |
22 |
17 |
13 |
11 |
|
|
|
|
|
|
|
|
|
|
|
2.5 |
|
|
|
35 |
26 |
21 |
17 |
13 |
|
|
|
|
|
|
|
|
|
|
3 |
|
|
|
|
38 |
30 |
24 |
19 |
15 |
|
|
|
|
|
|
|
|
|
4 |
|
|
|
|
|
54 |
42 |
34 |
27 |
21 |
|
|
|
|
|
|
|
|
5 |
|
|
|
|
|
|
67 |
52 |
42 |
33 |
26 |
|
|
|
|
|
|
|
6 |
|
|
|
|
|
|
|
75 |
60 |
48 |
38 |
30 |
|
|
|
|
|
|
8 |
|
|
|
|
|
|
|
|
107 |
85 |
68 |
53 |
43 |
|
|
|
|
|
10 |
|
|
|
|
|
|
|
|
|
134 |
105 |
85 |
67 |
53 |
|
|
|
|
12 |
|
|
|
|
|
|
|
|
|
|
153 |
120 |
96 |
78 |
60 |
|
|
|
15 |
|
|
|
|
|
|
|
|
|
|
|
188 |
150 |
120 |
95 |
75 |
|
|
20 |
|
|
|
|
|
|
|
|
|
|
|
|
270 |
215 |
170 |
135 |
108 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
F
|
|
|
|
|
|
