Forming system

Abstract

A forming system includes a heater that heats a metal pipe material, and a forming unit that forms, using a forming die, the metal pipe material that is heated, in which the forming unit is provided with a quenching mechanism that performs quenching on a formed product, and the formed product is transported to, during the quenching by the quenching mechanism, a jig for cooling that is provided outside the forming die.

What is claimed is: 
     
         1 . A forming system comprising: 
 a heater that heats a metal pipe material; and   a forming unit that forms, using a forming die, the metal pipe material that is heated,   wherein the forming unit is provided with a quenching mechanism that performs quenching on a formed product, and   the formed product is transported to, during the quenching by the quenching mechanism, a jig for cooling that is provided outside the forming die.   
     
     
         2 . The forming system according to  claim 1 , 
       wherein the metal pipe material is cooled from a martensitic transformation start temperature to a martensitic transformation finish temperature after being transported to the jig for cooling. 
     
     
         3 . The forming system according to  claim 1 , 
       wherein the forming unit performs forming by supplying fluid to the metal pipe material to expand the metal pipe material, and 
       a ratio of a cooling time by the jig for cooling to a cooling time by the forming die is higher in a case of the metal pipe material having a low blow pressure in the forming unit than in a case of the metal pipe material having a high blow pressure. 
     
     
         4 . The forming system according to  claim 1 , 
       wherein the forming die includes a lower die and an upper die that face each other in an up-down direction. 
     
     
         5 . The forming system according to  claim 4 , 
       wherein each of the lower die and the upper die is provided with a recess in which the metal pipe material is accommodated. 
     
     
         6 . The forming system according to  claim 5 , further comprising: 
 a drive mechanism that moves at least one of the lower die and the upper die.   
     
     
         7 . The forming system according to  claim 6 , 
       wherein the lower die is fixed to a base stage via a die holder, and the upper die is fixed to a slide of the drive mechanism via a die holder. 
     
     
         8 . The forming system according to  claim 1 , 
       wherein the jig for cooling includes a die-type member including a contact surface corresponding to an outer peripheral surface of the formed product as an upper jig and a lower jig. 
     
     
         9 . The forming system according to  claim 8 , 
       wherein a cooling circuit through which a refrigerant flows is provided inside the upper jig and the lower jig. 
     
     
         10 . The forming system according to  claim 9 , 
       wherein the cooling circuit is provided to be embedded in a die and provided to extend in a longitudinal direction around the contact surface. 
     
     
         11 . The forming system according to  claim 9 , 
       wherein the upper jig and the lower jig include a plurality of ribs disposed in a grid pattern.