Schematics
Figure 2 shows the schematics of a shear forming process.
1. A sheet metal blank is placed between the mandrel and the chuck of the spinning machine. The mandrel has the interior shape of the desired final component.
2. A roller makes the sheet metal wrap the mandrel so that it takes its shape.
As can be seen, s1 which is the initial wall thickness of the workpiece is reduced to s0.
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