Pneumatic Sheet Bending Machine

                                   WORKING PRINCIPLE
The pneumatic machine includes a table with support arms to hold the sheet, stops or guides to secure the sheet, upper and lower straight – edge blades, a gauging device to precisely position the sheet. The table also includes the two way directional valve. The two way directional valve is connected to the compressor. The compressor has a piston for a movable member. The piston is connected to a crankshaft, which is in turn connected to a prime mover (electric motor, internal combustion engine). At inlet and outlet ports, valves
allow air to enter and exit the chamber. When the compressor is switched ON, the compressed air is flow to inlet of the pneumatic cylinder. The sheet is placed between the upper and the lower blade. The lower blade remains stationary while the upper blade is forced
downward. The upper blade is slightly offset from the lower blade, approximately 5–10% of the sheet thickness. Also the upper blade is usually angled so that the cut progresses from one end to the other, thus reducing the required force. After the material is cut, adjust the pneumatic hand lever to the mid position (i.e., normal position) and then the compressor is switched OFF.

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Sheet metals are used in
  • Car bodies
  • Airplane wings
  • Medical tables
  • Roofs for buildings (Architectural) and many other things
  • Sheet metal of iron and other materials with high magnetic permeability, also known as laminated steel cores, has applications in transformers and electric machines.
  • Historically, an important use of sheet metal was in plate armor worn by cavalry, and sheet metal continues to have many decorative uses, including in horse tack.


  • Low cost
  • Less consumption of
  • Easy to handle
  • Skilled labor is
    not required
  • Less maintenance
  • High accuracy
  • Good surface finish
  • Less floor space
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