JPH01172434U

JPH01172434U -

Info

Publication number: JPH01172434U
Application number: JP6428288U
Authority: JP
Priority date: 1988-05-16
Filing date: 1988-05-16
Publication date: 1989-12-06

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示し、第１図は相手
型と入れ子式鍛造型との縦断面図であり、第２図
は入れ子式鍛造型の平面図であり、第３図はホル
ダーの保持孔から入れ子型を外し、入れ子型のキ
ー溝からキーを外した状態の斜視図である。第４
図および第５図は従来を示し、第４図は鍛造開始
前の入れ子式鍛造型の平面図、第５図は型ずれし
た状態の入れ子式鍛造型の平面図である。図中、１は入れ子型、１０は円弧状部、１１は
直線状部、１２は鍛造成形型面、１３はキー溝、
１４はキー、１５は周溝、３は保持孔、４は止め
孔、５は止め具をそれぞれ示す。 The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal cross-sectional view of a mating die and a nested forging die, Fig. 2 is a plan view of the nested forging die, and Fig. 3 is a view of the holder. FIG. 3 is a perspective view showing a state in which the nest mold is removed from the holding hole and the key is removed from the key groove of the nest mold. Fourth
5 and 5 show the conventional method, FIG. 4 is a plan view of a nested forging die before forging starts, and FIG. 5 is a plan view of the nested forging die in a misaligned state. In the figure, 1 is a nested mold, 10 is an arcuate part, 11 is a straight part, 12 is a forging mold surface, 13 is a keyway,
14 is a key, 15 is a circumferential groove, 3 is a holding hole, 4 is a stopper hole, and 5 is a stopper.

Claims

[Scope of Claim for Utility Model Registration] An arcuate portion that has a forging mold surface for forging a material on its axial end face and extends at least semicircularly in cross section, and a straight line connecting one end and the other end of the arcuate portion. a holder having a holding hole into which each of the nested molds is inserted in a gap-fitting state with the linear portions of the adjacent nested molds aligned; and a stopper for holding each of the nested molds inserted into the holding hole in the holder, and each of the nested molds has a surface of the forging mold among the linear portions of the adjacent nested molds. and keys that are engaged in the opposing key grooves and prevent circumferential rotation of each of the adjacent nested molds, further comprising: Each of the adjacent nesting dies is a nesting type forging die having a circumferential groove extending one or more than 2/3 of the circumference in the circumferential direction on the outer periphery and into which the tip of the stopper is locked.