Metal Spinning (CNC, conventional, up to 4 m diameter)
Deep Drawing Deep Drawing (up to 225 metric tons)
- Punching Punching
- Welding (all methodes)
- Spot welding
- Apparatus construction
- Bending (tubes up to 120 mm diameter, profiles)
- Joinery workshop for wooden models
- Toolmaking (steel forms and moulds up to 1.2 m diameter)
The process of metal spinning produces rotationally symmetrical parts. A flat sheet metal panel is positioned with the tools against a former so that the metal sheet assumes the geometry of the former. During this process, the former turns with the sheet in the same way as the workpiece on a lathe. The formers consist of wood, steel or plastic.
Manual metal spinning is done with so-called stick tools. By contrast, rollers are used for machine metal spinning. Thanks to the revolving head, it is possible to perform various operations automatically and in one clamping operation.
However, automation is worthwhile only in the case of large lot sizes.
The tools for metal spinning are generally cheaper than deep-drawing tools. However, the most economical process must be determined from part to part.
When deep drawing, the blank is clamped and pulled over a so-called punch. Several such steps are required for production of slim parts. Tool costs are generally higher than in the case with metal spinning. The parts may also assume non-rotationally symmetrical shapes, e.g. rectangular.
If a part can be produced using metal spinning, deep drawing is generally worthwhile only if large quantities are involved.
There are very many influencing parameters (pressure, lubricant and material properties etc.) in the deep-drawing process. Consequently, it may be a very complex and long-drawn-out process setting up the machine. Estimating the time required is frequently difficult.
Besides normal deep drawing, we also use hydromechanical deep drawing. This extends the range of shapes.
In many cases, punching is the most economical method of making holes, cutouts or contours. However, the right tools must be available for this. There should be an adequate number of parts to absorb the tool costs.
Our stock of punching tools is extremely diverse and designed for processing metal-spun and deep-drawn parts. Making cutouts in three-dimensional bodies makes extremely stringent demands of the jigs and fixtures.