Forming device

Abstract

A forming device includes a heater that heats a metal material, a forming die that forms the metal material that is heated, and a temperature control mechanism that controls a temperature of at least a part of a non-quenching portion of the forming die to form a non-quenching region in a formed product after forming of the metal material, in which the temperature control mechanism is present in the forming die surrounded by a heat insulating member provided in the non-quenching portion, and the temperature control mechanism includes a heating mechanism that heats the non-quenching portion of the forming die to form the non-quenching region in the formed product during the forming by the forming die, and a cooling mechanism that cools the non-quenching portion of the forming die at a timing after the non-quenching region is formed in the formed product.

What is claimed is: 
     
         1 . A forming device comprising: 
 a heater that heats a metal material;   a forming die that forms the metal material that is heated; and   a temperature control mechanism that controls a temperature of at least a part of a non-quenching portion of the forming die to form a non-quenching region in a formed product after forming of the metal material,   wherein the temperature control mechanism is present in the forming die surrounded by a heat insulating member provided in the non-quenching portion, and   the temperature control mechanism includes   a heating mechanism that heats the non-quenching portion of the forming die to form the non-quenching region in the formed product during the forming by the forming die, and   a cooling mechanism that cools the non-quenching portion of the forming die at a timing after the non-quenching region is formed in the formed product.   
     
     
         2 . The forming device according to  claim 1 , 
       wherein the cooling mechanism cools the non-quenching portion of the forming die at a timing after a bainitic transformation is completed in the formed product. 
     
     
         3 . The forming device 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. 
     
     
         4 . The forming device according to  claim 2 , 
       wherein the heater includes a lower electrode, an upper electrode, and a power supply that causes a current to flow through the metal material via the lower electrode and the upper electrode. 
     
     
         5 . The forming device according to  claim 3 , 
       wherein the metal material is a metal pipe material, and 
       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 device according to  claim 3 , further comprising: 
 a drive mechanism that moves at least one of the lower die and the upper die.   
     
     
         7 . The forming device 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 the die holder. 
     
     
         8 . The forming device according to  claim 2 , 
       wherein the heating mechanism is formed by an induction heater provided inside a heating die block. 
     
     
         9 . The forming device according to  claim 1 , 
       wherein the non-quenching portion includes a heating die block on a forming surface side and a normal die block on an opposite side. 
     
     
         10 . The forming device according to  claim 9 , 
       wherein the cooling mechanism is formed by flow path provided in the non-quenching portion on both sides of the heating die block.