Faster cycle times by mechanical deep drawing
Description
In hydromechanical deep drawing, the blank lies on a water-filled cushion that is only sealed in the flange area by means of a hold-down ring. A punch that provides the contour impacts the blank and continues its downward motion until the water pressure, elevated by the displaced medium, completely expands the blank over the punch. The resulting surface quality is superior since the outside of the component has no direct contact with the tool. Higher drawing ratios can be achieved by this method than by conventional deep drawing. In addition, a lower half of the die is not necessary.Since the cycle times are faster than in hydraulic deep drawing, this method usually involves cost savings for small and medium-sized production lots.
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Schematic representation of hydromechanical deep drawing (1)
Schematic representation of hydromechanical deep drawing (2)
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