Spinning Process In Sheet Metal Forming

Metal spinning and flow forming have noteworthy differences in the initial blank or preform used mainly because the final workpiece produced by each process has different requirements.

Spinning process in sheet metal forming.

The spinning process is fairly simple. In a conventional spinning operation the work is essentially formed by bending. The sheet metal parts that have circular cross section can be made by this process. There is usually not much change in the thickness of the sheet metal.

About 90 percent of spun parts can be formed by starting with a blank disk trimmed from standard commercial sheet metal. Metal spinning does not involve removal of material as in conventional wood or metal turning but forming of sheet material over an existing shape. The symmetrical parts can be formed over mandrels by using sheet metal spinning process. Spinning is a sheet metal forming process in which a metal blank is pressed over a rotating chuck or form mandrel with the help pressing tool to obtain axisymmetric hollow shell.

The rotation of sheet metal with high speed on a spinning lathe. Metal spinning also known as spin forming or spinning or metal turning most commonly is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. Shear spinning is a process related to conventional spinning and is also known as flow turning or spin forging. The axis symmetric components formed by using spinning sheet metal forming as shown in figure the spinning metal product such as aircraft engine parts jet engine parts truck wheels and etc.

Metal spinning does not involve removal of material as in conventional wood or metal turning but forming moulding of sheet. A sheet metal disc is rotated at high speeds while rollers press the sheet against a tool called a mandrel to form the shape of the desired part. Spinning can be performed by hand or by a cnc lathe.