Reciprocating type thread rolling apparatus

Abstract

The present invention relates to a reciprocating type thread rolling apparatus and comprises a ram reciprocated by a crank shaft and fixing to one side thereof at least two moving dies, the other side of the ram being disposed along a single thread rolling pressure bearing block, and stationary dies adapted to pair with the moving dies for thread rolling, the stationary dies being the same in number as that of the moving dies and disposed to be opposite to the moving dies.

1 . A reciprocating type thread rolling apparatus comprising a ram  7  reciprocated by a crank shaft and fixing to one side thereof at least two moving dies  10   a,    10   b,  the other side of the ram being disposed along a single thread rolling pressure bearing block, and stationary dies  9   a,    9   b  adapted to pair with the moving dies for thread rolling, the stationary dies being the same in number as that of the moving dies and disposed to be opposite to the moving dies.  
     
     
         2 . The reciprocating type thread rolling apparatus according to  claim 1 , wherein the ram  7  is divided into at least two rams  7   a,    7   b  and the moving dies  10   a,    10   b,  respectively, are arranged on the respective rams.  
     
     
         3 . The reciprocating type thread rolling apparatus according to  claim 2 , wherein the moving die  10   a  is not arranged on the ram  7   a  and the at least two moving dies  10   a,    10   b  are arranged on the ram  7   b.    
     
     
         4 . The reciprocating type thread rolling apparatus according to  claim 3 , wherein the ram  7   b  is further divided into at least two rams, and the moving dies  10   a,    10   b  are arranged on each of the rams as divided.