Four-hammer forging device

Abstract

The invention relates to metal forming and can be used for forging billets and blanks by means of hydraulic forging presses. The inventive device comprises two holders for top and lower hammers and two holders for side hammers which are cinematically connected thereto. Each top and lower hammer is provided with two working surfaces separated by a recess in which the working surfaces of the side hammers penetrate. At least one adjusting plate is arranged between the lower hammer and the holder thereof. Said lower hammer is fixed to the holder by two L-shaped clamps which are pressed by the inclined faces thereof against the inclined faces of the lower hammer holder and by the wavy faces thereof against two friction plates which are made, for example of copper and fixed to the side surfaces on the lower hammer. Pins which are fixed in the lower hammer pass through the holes of the adjusting plates and penetrate into the holes of the lower hammer holder.

1 . A four-hammer forging device comprising two holders of the upper and the lower hammers with inclined surfaces, two holders of side hammers, wherein said holders have kinematical connection with the first two holders and said side hammers have inclined surfaces corresponding to the inclined surfaces of the said holders of the upper and the lower hammers; and four hammers fastened to the hammer holders with clamps and tightening studs, wherein the first two of them, namely the upper hammer and the lower hammer, have two working sections each, which are separated by a notch, and the other two, namely the side hammers, have one working section each, which enters the notches on the upper hammer and the lower hammer, characterized in that one or more adjusting plates are installed between the lower hammer holder and the lower hammer itself, the lower hammer is fastened to the lower hammer holder with two L-shaped clamps which on one side are pressed by their inclined surfaces against the inclined surfaces of the lower hammer holder and on the other side against two friction plates fastened to the side surfaces of the lower hammer, and pins, which are fastened in the lower hammer, pass through holes in the adjusting plates and enter holes in the lower hammer holder.  
   
   
       2 . The four-hammer forging device according to  claim 1 , characterized in that said friction plates are made of copper.