Stretch Forming Operation In Sheet Metal

Stretching stretch forming stretch forming is a sheet metal forming process in which the sheet metal is intentionally stretched and simultaneously bent to have the shape change.

Stretch forming operation in sheet metal.

The die depends on the final require shape of product. Stretch forming is performed on a stretch press in which a piece of sheet metal is securely gripped along its edges by gripping jaws. Stretch forming is performed on a stretch press in which a piece of sheet metal is securely gripped along its edges by gripping jaws. In drawing a punch pulls the metal into the forming cavity so it forms the metal in tension.

Thus the free or unfixed edge of the sheet metal piece is bent to make the forming process. Stretch forming aluminum extrusion duration. Then the other end is forced to strike upon the punch which is free or unfixed. When the die is support on the rotating table as shown in figure.

Yamashita kogyosho 176 848 views. 3d sheet metal forming shinkansen 打ち出し板金 新幹線e4系max やまびこ duration. Almost any shape that can be produced by other sheet forming methods can be produced by stretch forming. Stretch forming is a metal forming process in which a piece of sheet metal is stretched and bent simultaneously over a die in order to form large contoured parts.

The stretch forming consists of gripper mechanism which is supported by hydraulic unit of holding the sheet metal. Most part defects such as splits and wrinkles occur in forming operations. The system having set of gripper is used to stretch the sheet metal. The metal being formed must have the ability to stretch and compress within given limits.

All forming operations deform sheet material by exposing it to tension compression or both. Hydro forming cheap tooling no net thinning slow high formability material stretched into shape stretch forming very cheap tooling net thinning slow low formability super plastic forming cheap tooling net thinning expensive sheet metal slow very high formability technology a brief review forming speed 20. Successful sheet metal forming relies heavily on the metal s mechanical properties. Stretch forming is a metal forming process in which a piece of sheet metal is stretched and bent simultaneously over a die in order to form large contoured parts.

The key is to try to form the sheet metal with as little stretching as possible although a slight amount of stretching will occur because tension is involved in the drawing process.