INNOVATIVE METAL FORMING
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DESCRIPTION OF METAL SPINNING

In metal spinning, a disc of metal is revolved at controlled speeds on a specialized machine similar in design to a machine lathe. Instead of the clamping chuck common on a machine lathe, a wood or metal spinning mandrel is used, the form of which corresponds with the internal contour of the part to be produced. The blank is clamped between spinning mandrel and a follower on the tailstock spindle. The mandrel, blank, and follower are then set in rotation. Spinning tools or spinning rollers are forced against the rotating blank by hand or auxiliary power. Employing a series of axial and radial (swivel) strokes, the blank is spun onto the mandrel causing the metal to flow to the shape of the desired part. Although the metal is usually cold when spun, it appears to flow somewhat like a piece of clay on a potter's wheel. With this forming technique, material thickness generally changes slightly from blank to finished component.

History of Metal Spinning
Description
General
Advantages of Metal Spinning
Tooling
Spinning/Deep Drawing
Design Suggestions

The text in this primer is printed with permission of the PMA.

metal spinning: spun metal parts



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