Overview of Metal Spinning
The time honoured trade of metal spinning dates back to the Ancient Egyptian times. Introduced to North America in the early 1800’s, metal spinning has evolved from hand metal spinning on a manual lathe, to the use of modern CNC spin forming machines.
Metal spinning is a forming process that produces hollow parts which are typically circular in cross-section. The basic metal spinning process starts with a flat metal disc (blank), which rotates on a lathe. This rotating blank is pressed against a tool (chuck mandrel) that duplicates the interior of the part.
The basic metal spun shapes are the hemisphere, cone, cylindrical shell and venturi to name a few. Parts produced from metal spinning are utilized in many industries such as: agricultural, food service, lighting, marine, automotive, commercial and industrial roofing, commercial and residential lighting, bearing closures, air pollution and ventilation, custom display stands, funeral urns, industrial vacuum cleaners, flag stand bases, fireplace accessories and satellite dish manufacturers.
Historically, metal spinning was associated with prototypes and low volume production. However, with the introduction of automatic and CNC lathes, metal spinning is now an economical option for both medium and high volume production. The relatively inexpensive tooling price still makes this forming method a cost-effective one for fabricating prototypes.