Cost savings by active hydromechanical deep drawing

Description

This methodology differs from hydromechanical deep drawing in that the blank is initially prestressed in the opposite direction of the punch movement before the punch impacts the blank.  In this way the component undergoes work-hardening that would otherwise by difficult to achieve in the middle section of the component using conventional deep drawing.  In addition, as is also the case in hydromechanical deep drawing, larger drawing ratios are achieved as compared to conventional deep drawing.  One die half is also not required.
Since the cycle times are faster than in hydraulic deep drawing, there is generally some cost savings for smaller and medium-sized production lot sizes.

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