JPH034329U

JPH034329U -

Info

Publication number: JPH034329U
Application number: JP6254989U
Authority: JP
Priority date: 1989-05-31
Filing date: 1989-05-31
Publication date: 1991-01-17

Description

[Brief explanation of drawings]

第１図はホイールリムの一例の説明的断面図、
第２図ａ〜ｄは該ホイールリムの製造方法の概略
を説明するための説明図、第３図は本発明のフラ
ンジ部成形装置の一例の説明的断面図、第４図は
第３図の−線断面図、第５図は第４図の−
線断面図、第６図ａ，ｂは該フランジ部成形装
置の作動説明図である。１……上型、２……上パンチ、３……下型、４
……下パンチ、５……昇降台、６……支持台、７
……サイドダイ、８……付勢手段、Ａ……円筒体
、Ｈ……ホイールリム、Ｆａ_１，Ｆａ_２，Ｆｂ_１，Ｆｂ_２……フランジ部。 FIG. 1 is an explanatory cross-sectional view of an example of a wheel rim;
2A to 2D are explanatory diagrams for explaining the outline of the method for manufacturing the wheel rim, FIG. 3 is an explanatory cross-sectional view of an example of the flange forming apparatus of the present invention, and FIG. - Line sectional view, Figure 5 is the same as Figure 4 -
The line sectional view and FIGS. 6a and 6b are explanatory views of the operation of the flange forming device. 1...Upper die, 2...Upper punch, 3...Lower die, 4
...Lower punch, 5...Elevating platform, 6...Supporting platform, 7
... Side die, 8 ... Biasing means, A ... Cylindrical body, H ... Wheel rim, Fa ₁ , Fa ₂ , Fb ₁ , Fb ₂ ... flange part.

Claims

[Scope of utility model registration request]

An apparatus for forming flange parts of a predetermined shape by press working on both ends of a cylindrical body made of metal material in order to manufacture wheel rims for automobiles. an upper mold, a support stand that is biased upwardly between the two molds and is movable up and down, and that removably supports the cylindrical body whose axis is directed in the up-down direction; A side die that is biased upward around the supported cylindrical body, is provided so as to be movable up and down integrally with the support base, and is removably fitted onto the outer peripheral surface of the cylindrical body; an upper punch that is provided on the lower die and is fitted into the upper part of the cylindrical body with the side die externally fitted on the way down, and a cylindrical body that is provided on the lower mold and is lowered together with the upper die and the side die after the upper punch is internally fitted. A flange portion of a predetermined shape is press-formed on the upper part of the cylindrical body between the upper punch and the side die in one lowering of the upper mold,
In the apparatus for press-forming a flange portion of a predetermined shape on the lower part of a cylindrical body between a lower punch and a side die by further lowering the upper mold following the molding, the support stand and the side die are provided between the two molds so as to be freely movable up and down. 1. A wheel rim flange forming device, characterized in that a biasing means is provided on a lifting table and urges the lifting table upward and is provided between the lifting table and a lower die.