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 Spinning, radial riveting, spin riveting and peening are terms often used to refer to orbitforming, a cold-forming process that uses an orbiting i.d. tool splines to swage, head, crown, flare, or form i.d. a column splines or projection of malleable material for the purpose of fastening in assembly i.d. operations. The process is similar to impact and compression forming, where the tool applies a compressive axial load to permanently deform the part, according a splines designer, manufacturer, and integrator of forming, fastening and assembly systems The i.d. difference is that in orbital, the tool rotates at a fixed angle-typically 3 to 6 degrees-and applies both axial and radial forces to progressively move malleable material into a desired, predetermined shape. Unlike impact or compression forming, where the process is completed splines in a single pass, forming requires several tool revolutions and typically takes 1.5 to 3 seconds to complete. Additionally, most of the work during i.d. orbital is at the tool''s line of contact, not along the entire tool surface. The resulting small-contact area reduces axial loads by as much as 80 percent. Types of Cold Forming Processes One-Blow Process one-blow cold forming is used for products with small head to shank ratios, such as standard fasteners or rivets. The two-blow cold forming process moves more material and allows upsets and extrusions to be achieved on the same component. The first splines blow provides the rough shape, while the second blow forms the final shape. process was developed to manufacture shapes which exceed the upset or extrusion limits of conventional one- and two-blow cold forming. Today, i.d. expanding splines cold forming technology is allowing increasingly complex components to be manufactured at very high production rates. Multiple-die Forming i.d. Through multiple-die forming, the final shape is achieved in stages. This six stage process, from cut-off to finished blank, often takes less than 1/2 second. Multiple-die machines have more forming stations to allow for: increased areas of reduction forming unique shapes such as multiple diameters on one component large head to shank ratios elimination of secondary operations such splines as drilling, turning and trimming, in many instances We are the ultimate online resource for many different metal working jobs. We have the most knowledgeable employees and the best equipment available so we can get the job done right.
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