To provide a method for forging a taper ring, which can decrease a forged material to a predetermined dimension, suppressing the temperature fall of the forged material by shortening the forging time, in a taper ring forging method for forging a forged material having a small diameter and a large diameter in both the ends in a center axis direction, by moving a depression region while depressing the outer surface of the forged material.
In a method for forging a taper ring material 1, a core metal 2 is inserted into a taper ring material 1 heated to a predetermined temperature, while the outer surface of the taper ring material 1 is depressed all over the length by an upper anvil 3 arranged above the taper ring material 1, the movement of the depression region is repeated by rotating the taper ring material 1 by the rotation of the core metal 2, the taper ring material 1 having a small diameter and a large diameter in the inner and outer diameter of both the ends in a center axis C1 direction is forged, and the taper ring material 1 is forged so that a state having an angle deviance α is allowed, the taper ring material 1 being inclined from the upper anvil and the center axis C0 of the core metal, when the center axis C1 of the taper ring material 1 is plan-viewed.
| JPH1177228 | HOT FORGING METHOD |
| JPH01284449 | FORGING METHOD |
| JPS5171250 | HONETSUKINO SEIZOHO |
IKEGAMI TOMONORI
YAMABE DAISUKE
KAGAWA TAKANORI
KOYAMA EIICHI
| JPH0899145A | 1996-04-16 | |||
| JPH08257671A | 1996-10-08 | |||
| JPH0899145A | 1996-04-16 |
Seiji Kameoka
Hironori Takenaka
Toru Sakatani
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