![]() ![]() Swage is most often pronounced / ˈ s w eɪ dʒ/ ( AHD format: swāj). Swages called " fullers" are specific to making grooves in swords and knives. Swage blocks are anvil-like dies with various shapes forged into them, which are also used for forming metal. These have handles for holding or pegs for attaching to an anvil, and often a flat head for striking with a hammer. Swages were originally tools used by blacksmiths to form metal into various shapes too intricate to make with a hammer alone. The latter three have specific advantages in working around the circumference of a tube, especially where sharp angles and radical diameter changes require working the tube more gradually.The term "swage" comes from the Old French term souage, meaning "decorative groove" or "ornamental moulding". The ways to form the tube end boil down to a few basic methods, so understanding their capabilities and limitations is critical to selecting the best process for a particular part.Thinking about creative ways to employ the process can help to improve product performance and reduce process cost.Figure 1Ram forming is one of two end forming methods that forms the entire tube circumference at one time.The basic end forming methods are segmented tool sizing, ram forming, rotary forming, roll forming, and spinning. How do you sort through them?Focusing on the function of the tubes to be reshaped, and not on the forming method, can lead you to select an end forming method that optimizes the part cost, particularly if the opportunity involves a new part. An Internet search for 'tube end forming' leads to a range of options. Selecting a tube end forming method It's a matter of asking the right questionsSeptember 12, 2006ByYour company has the opportunity to provide a tube assembly, but it requires end forming-a capability you do not have. The spindle is mounted inside a cage containing rollers (looks like a roller bearing). This action is achieved by mounting the dies into the machine's spindle which is rotated by a motor. Grease is often used to lubricate this swaging process, which is also called roller swaging.A swaging machine works by using two or four split dies which separate and close up to 2000 times a minute. The flaring is done with a pair of rolls that travel around the hole and are fed down into the part, deforming the metal in a controlled, predicted way. Swaging a bearing into a housing means either flaring its groove's lips onto the chamfer of the housing, or flaring the housing's material over the edge of the bearing. ![]() It can also impart internal shapes in hollow workpieces through the use of a (the shape must have a constant cross-section). Swaging is normally the method of choice for since there is no loss of material in the process.Rotary swaging is usually a cold working process, used to reduce the diameter, produce a taper, or add a point to a round workpiece. ![]()
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