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The origin of metal spinning
lies in the embossing process. It is the most economical
forming process especially for single
pieces or small series; it belongs to the so-called non-cutting forming process as does deep drawing. In addition to traditional
manual pressing, hydraulic and CNC replay technology are also used. Round, flat
sheet metal discs, the discs, are usually the starting material. These are
pressed around a wooden or steel mould, the spinning mould, by means of rollers
or rods; in the case of rotationally
symmetrical hollow bodies, this mould rotates. In most cases, the rotating
tool has the inner contour of the product to be produced, and the back pressure
only attacks locally. Finishing of the workpiece includes grinding, calibrating, stamping,
folding, border crimping and trimming. We have developed special
trimming machines with 8-axis control for these operations - also for
deep-drawn parts.
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