Example: Open die forging hammer
   


Open die forging hammer

Year of construction 1979
Weight of tup 3000 kg
Weight of dies approx. 1650 kg

Feuerbacher tensioning key 78.430 SB
Height 78 mm, width 93 mm, length 430 mm
Externally mounted cup spring washers
Form fit vertical contact face
Supporting clamping screw
Thread M27
Angles 5º/20º
 
   Application
     
 
Die insert holder for forging on an open die forging hammer.

The die holder is clamped on the anvil bed using a Feuerbacher tensioning key.

The die inserts are clamped into the die holder using wedges.

For changeovers the arrangement allows rapid replacement of the die insert or of the complete die holder.

To counter-act the tendency for the die to tilt the angles of
the clamping key are in this case 20° on the die side and 5°
on the die holder side.		  
 
   Detail of clamping configuration
 
 



 
   Alternative arrangement
 

 



As an alternative to using a wedge system for clamping the upper die holder a Feuerbacher tensioning key could be used.

To prevent collision between the Feuerbacher tensioning key and the bridge structure of the hammer the length of the Feuerbacher tensioning key used must be such that it does not protrude beyond the side faces of the die holder.

  
 
   Downloads

» open die forging.pdf [72kb]


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