| 摘要 |
A forging device capable of producing a high-quality forged article while simplifying the structure is provided. The forging device of the present invention includes a punch 1, a die 2 having a shaping hole 22 and a helical blade portion 23 formed on an inner peripheral surface of the shaping hole, a back pressure generation mechanism 15, and a back pressure transmission mechanism. The back pressure transmission mechanism includes a rotation-side transmission member having a back pressure plate 40 and a non-rotation-side transmission member. The back pressure plate 40 is arranged in the shaping hole 22 in a fitted manner. When a forging material W1 is driven into the shaping hole 22 and the back pressure plate 40 is pressed downward by the metallic material, the back pressure plate 40 is guided by the blade portion 23 of the shaping hole 22 and thereby descends while rotating about the axis and a back pressure by the back pressure generation mechanism 15 is applied to the metallic material via the back pressure transmission mechanism. |
