Operation
Figure
2
Figure 2.
b
a
a
b
a b
L
t
BA
BA
a b
BD
BD
L
t
= Total workpiece length before bending
a = Required finished height
b = Required finished length
BA = Bend allowance
BD = Bend deduction
Inside Measurements: L
t
= (a + b) + BA
Outside Measurements: L
t
= (a + b) – BD
Bend Line
Bend Line
Top View Side View
Top View
Side View
L
t
Machinery's Handbook
To complete a typical bend operation:
1
2
3
4
5
6
7
Figure 3
8
9
Figure 3.