Patent ID: 6516646
Filing Date: 2003-02-11
Classification: B21D,Y10T

Abstract:
Device for manufacturing a hollow body from two plates, comprising:an internal high pressure forming tool having an interior surface defining a mold chamber corresponding to a shape of the hollow body, said forming tool receiving two plates resting against each other; and an expansion lance insertable between the plates via an axial drive, the expansion lance and the axial drive forming a pushing plunger, the expansion lance having a pinching section along a circumferential contour, the plates to be pinched being arranged between said pinching section and the forming tool; said expansion lance including a feed bore communicable with a high pressure fluid source; and said expansion lance defining an axial stop to abut axial edges of the plates, said axial stop having a radial periphery which is smaller than that of the mold chamber.