|Bending - Course: Technique of Working Sheet Metals, Pipes and Sections. Trainees' Handbook of Lessons|
Thin cross-sections of sheets, pipes and sections without requiring an exact accuracy to size may be bent by hand with appropriate clamping fixtures.
As for larger and thicker materials, the following tools, appliances and machines are employed:
Such as machinist's hammers, light-metal, wooden and rubber hammers as well as special hammers for manually bending sheet metals.
Such as round-nose and flat-nose pliers to bend small sheets and thin sec-dons on the vise or freely in one's hand.
Such as fuel gas-oxygen welding torches to locally heat the workpiece for hot bending.
Angle bending device:
This device is used to fold or round flat, square and round section.
Strip rolling device:
This device is used to round and roll flats, squares and rounds.
Pipe bending device:
These manually operated or hydraulic devices are used to round pipes.
Such as hand-type screw or hydraulic presses with different screw insets and supports to bend sheet metals and sections.
Such as table-type and column-type folding presses to fold and partially round sheet metals.
Such as hand-operated and mechanical roll bending machines to round and roll sheet metals.
Crimping and flanging machines:
Manually operated and mechanical appliances and machines are used to crimp and flange sheet metals.
Apart from above tools, appliances and machines, the following clamping fixtures and supports are needed:
Such as parallel vises and collet vises with different clamping jaws for manual bending.
Face, round horn and flat horn as well as slip-on striking supports such as creasing stake and double face sledge, hardy and bordering tools for bending work with hammers are used.