| 摘要 |
PURPOSE:To work smoothly without causing the defect of buckling, etc. and to improve the yield by working with using the rotary forging machine that the upper die is slantly rotated against the lower die. CONSTITUTION:The upper die 2 of the rotary forging machine consisting of the lower die 1 to rotate on the horizontal face centering around the vertical rotary shaft A and the upper die 2 to rotate and move vertically centering around the rotary shaft B fixed with the inclination a against the rotary shaft A, is ascended. A heated pipe 3 is fitted into the groove die of the lower die 1 and is expanded with push to the outer side by the bent part 6 abutted to the end face of the pipe 3 by descending the upper die 2 with rotating both the upper and lower dies and at the time of the guide parts 5 of the upper and lower dies being abutted the work is completed and a forged article 4 is obtd.
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