| Felss Rotary Swaging |
Rotary swaging: The principle and working sequence
Rotary swaging can be classified as a type of forming process.
The German standard DIN 8583 described rotary swaging as "a free forming method for reducing cross sections of metal rod and tube material using two or more tool segments which partially or wholly surround the cross section to be reduced, acting simultaneously in the radial direction and in rotation relative to the workpiece".
In rotary swaging, opposing die segments apply press forces in rapid sequence in the radial direction towards the workpiece axis, the length of movement being limited. High specific forming forces are generated.
The die segments are guided in slots in the end of the shaft of the swaging head. The return movement is derived from the centrifugal forces resulting from the rotation of the shaft. When the base jaw that drives the die is positioned between two pressure rollers the die is in the open position; when the highest point of the base jaw is centrally under one of the rollers the dies are closed. The roller cage has a continuous relative movement resulting from the rotation of the swaging shaft. The cam shape on the head of the base jaws is designed for smooth operation and minimum wear in this area.
Design of a rotary swaging machine
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