| 摘要 |
PURPOSE:To produce the work having excellent working accuracy in a forging stage only by performing hot straight blanking after the stages of a upset, blocker and finisher and by adding a hot coining stage. CONSTITUTION:A work is made in the necessary shape by hot forging through each stages of upset, blocker and finisher of a billet. Then after cutting at the same time the draft part of the work as well together with a trimming by a blanking die, a coining is performed by a coining die in a hot coining stage. A cam slider 8 is advanced with the descent of a cam 10 and the side face of the coining die C is strongly pressed to the blanked face of the work W and the surface roughness, flatness and the squareness the upper and lower faces of the work etc. are corrected and shaped. When the cam slider 8 is stopped at the advance position by the vertical face of the cam 10, a fitting plate 2 is further descended and the surface roughness, flatness and the squareness to both side faces of the X, Y faces of the work W are shaped by said coining die B.
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