1. Purpose of Bending

Sheet metals, pipes or sections are remodelled by various techniques in order to give angular or round forms to workpieces to be used for a certain purpose.

Figure 1 Bending

Due to its versatility, bending is applied in many manufacturing fields:

Folding:	Fabricating short sections, channels, sheet-metal containers or cases as well as frames and supporting structures made of sections.
Turning over:	Fabricating edge stiffenings of containers or cases, preparing saddle joints.
Flanging:	Fabricating sheet-metal joints and edge deformations on containers, preparing saddle joints.
Seaming:	Fabricating sheet-metal joints on containers and pipes.
Crimping:	Fabricating sheet-metal stiffenings on containers and sheet linings.
Rounding:	Fabricating arched sheet metals for containers and pipes as well as curved sections.
Rolling:	Fabricating sheet-metal stiffenings on container rims, hinge joints, cylindrical cavities with flat sections for accommodating pins and spiral springs.

What is the purpose of bending?
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Which techniques are applied to bending sheet metals?
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