Method and arrangement for manufacturing a cutting insert

Abstract

A method for manufacturing a cutting insert having a through-hole that extends in a direction that is non-parallel to the main pressing direction. The method includes the steps of moving first and second punches within a die cavity toward each other along a first pressing axis and compacting a powder around a core rod into a cutting insert green body, wherein, during at least a portion of the compaction step, the core rod is turned a predetermined angle in alternating direction around its longitudinal axis.

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         11 . An arrangement for manufacturing a cutting insert having a through-hole, the arrangement comprising:
 a press tool including a die having a die cavity extending through the die along a first pressing axis, a first punch and a second punch, which are movable toward and away from each other and along said first pressing axis and a core rod arranged to be inserted into the die cavity in a direction which is non-parallel to the first pressing axis; and   a driving device arranged to turn the core rod a predetermined angle in alternating directions around its longitudinal axis.   
     
     
         12 . The arrangement according to  claim 11 , wherein the core rod has a circular cross-section. 
     
     
         13 . The arrangement according to  claim 11 , wherein the core rod has a non-circular cross-section. 
     
     
         14 . The arrangement according to  claim 11 , wherein the core rod includes a first core rod section and a second core rod section that are arranged to be inserted from opposite directions into the die cavity such that front portions of each core rod section contact each other in the die cavity. 
     
     
         15 . The arrangement according to  claim 11 , further comprising a sintering furnace for sintering the cutting insert green body. 
     
     
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