Upsetting press and method for upsetting of an end of longitudinally extending workpieces

Abstract

In order for upsetting presses to be able to work more effectively and in more energy-optimized manner for upsetting of an end of longitudinally extending workpieces, an upsetting press for upsetting of an end of longitudinally extending workpieces has at least two longitudinally divided dies, having at least two die parts. A first one of the two die parts is disposed on a first die revolver and a second one of the two die parts is disposed on a second die revolver.

What is claimed is: 
     
         1 . An upsetting press for upsetting of an end of a longitudinally extending workpiece, comprising:
 (a) at least first and second longitudinally divided dies, each die having at least first and second die parts; and   (b) a first die revolver and a second die revolver;   wherein each of the first die parts are disposed on the first die revolver and each of the second die parts are disposed on the second die revolver.   
     
     
         2 . The upsetting press according to  claim 1 , wherein the first die parts are disposed on the first die revolver and the second die parts are disposed on the second die revolver so as to open toward one another, in each instance. 
     
     
         3 . The upsetting press according to  claim 1 , wherein the first die part of the first die faces the second die part of the first die in an upsetting position of the first die revolver and the first die part of the second die faces the second die part of the second die in an upsetting position of the second die revolver. 
     
     
         4 . The upsetting press according to  claim 1 , wherein the dies are longitudinally divided in a plane that does not intersect first and second rotation axles of the respective first and second die revolvers. 
     
     
         5 . The upsetting press according to  claim 4 , wherein each of the first die parts is disposed on a first side of the plane where the first rotation axle of the first die revolver is disposed and each of the second die parts is disposed on a second side of the plane where the second rotation axle of the second die revolver is disposed. 
     
     
         6 . The upsetting press according to  claim 1 , wherein the first and second die revolvers are disposed on rotation axles that are parallel to one another. 
     
     
         7 . The upsetting press according to  claim 1 , wherein at least a first die part of a third longitudinally divided die is disposed on the first die revolver and at least a second die part of the third longitudinally divided die is disposed on the second die revolver. 
     
     
         8 . The upsetting press according to  claim 7 , wherein the first and second die parts are disposed in pairs that open toward one another, in each instance, on the first and second die revolvers. 
     
     
         9 . The upsetting press according to  claim 1 , wherein at least the first die revolver is displaceable in at least one of an axial direction and a radial direction between a working position and an adjustment position. 
     
     
         10 . The upsetting press according to  claim 1 , wherein both the first and second die revolvers are displaceable in at least one of an axial direction and a radial direction between a working position and an adjustment position. 
     
     
         11 . An upsetting method for upsetting of an end of a longitudinally extending workpiece in an upsetting press comprising at least first and second longitudinally divided dies, each die having at least first and second die parts, said method comprising:
 (a) disposing the workpiece in the upsetting press; and   (b) alternately displacing the first and second die parts of the first and second longitudinally divided dies into an upsetting position and into a readiness position.   
     
     
         12 . The upsetting method according to  claim 11 , wherein the first die parts of the first and second longitudinally divided dies or the second die parts of the first and second longitudinally divided dies are displaced simultaneously, in each instance, between the upsetting position and the readiness position. 
     
     
         13 . The upsetting method according to  claim 12 , wherein both the first and second die parts of the first and second longitudinally divided dies are displaced simultaneously between the upsetting position and the readiness position. 
     
     
         14 . The upsetting method according to  claim 12 , wherein displacement takes place with an identical path progression, in each instance. 
     
     
         15 . The upsetting method according to  claim 11 , wherein displacement between the upsetting position and the readiness position takes place during one heat, and an upsetting procedure is carried out with each of the first and second longitudinally divided dies in the upsetting position. 
     
     
         16 . The upsetting method according to  claim 11 , wherein displacement takes place by at least one of rotation in a same direction and rotation in an opposite direction of the first and second die revolvers. 
     
     
         17 . The upsetting method according to  claim 11 , wherein the upsetting press is in a reclining position or wherein a traverse passes through the workpiece during pressing or in a pressing position. 
     
     
         18 . The method according to  claim 17 , wherein the traverse is a loose traverse of the upsetting press. 
     
     
         19 . The upsetting press according to  claim 1 , further comprising a centered tube clamp having at least three clamping jaws that can be braced relative to one another, and a wedge bracing unit for bracing the at least three clamping jaws relative to one another.