Electrohydraulic forming apparatus

Abstract

An electrohydraulic forming apparatus includes a mold with an upper portion and a lower portion, an enclosure having a first region, a second region, a mold cavity positioned in the second region, and electrodes having electrode tips positioned in the first region, wherein a piston is mounted so as to be movable in translation within a channel in a fluidtight manner and separates the first region from the second region of the enclosure.

1 . An electrohydraulic forming apparatus comprising:
 a mold with an upper portion and a lower portion,   an enclosure having a first region, a second region, and a mold cavity positioned in the second region,   electrodes having electrode tips positioned in the first region,   a piston amounted so as to be movable in translation within a channel of the enclosure in a fluidtight manner and separates the first region from the second region of the enclosure.   
     
     
         2 . The electrohydraulic forming apparatus according to  claim 1 , wherein the piston comprises first guide means complementary to second guide means of the channel. 
     
     
         3 . The electrohydraulic forming apparatus according to  claim 2 , wherein the first guide means comprise three ribs. 
     
     
         4 . The electrohydraulic forming apparatus according to  claim 2 , wherein the second guide means comprise three grooves. 
     
     
         5 . The electrohydraulic forming apparatus according to  claim 1 , wherein the piston has a first face of planar shape and directed towards the mold cavity. 
     
     
         6 . The electrohydraulic forming apparatus according to  claim 1 , wherein the piston has a first face of a shape selected from the set of concave and convex shapes and directed towards the mold cavity. 
     
     
         7 . The electrohydraulic forming apparatus according to  claim 6 , wherein the piston has a second face of planar shape and directed towards the first region. 
     
     
         8 . The electrohydraulic forming apparatus according to  claim 6 , wherein the piston has a second face of a shape selected from the set of concave and convex shapes and directed towards the first region. 
     
     
         9 . The electrohydraulic forming apparatus according to  claim 1 , wherein the channel has a stop adapted to retain the piston. 
     
     
         10 . The electrohydraulic forming apparatus according to  claim 9 , wherein a spring is positioned between the piston and the stop.