JP2535700Y2 - Synchronous mechanism in rotary forging machine - Google Patents
Synchronous mechanism in rotary forging machineInfo
- Publication number
- JP2535700Y2 JP2535700Y2 JP2159093U JP2159093U JP2535700Y2 JP 2535700 Y2 JP2535700 Y2 JP 2535700Y2 JP 2159093 U JP2159093 U JP 2159093U JP 2159093 U JP2159093 U JP 2159093U JP 2535700 Y2 JP2535700 Y2 JP 2535700Y2
- Authority
- JP
- Japan
- Prior art keywords
- forging machine
- rotary forging
- die
- rotating
- constant amplitude
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Forging (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、円周上に非回転対称な
形状を一定の振幅をもって形成した、例えば自動車用の
アルミホイールを回転鍛造によって製造するのに適した
回転鍛造機における同期機構に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a synchronous mechanism in a rotary forging machine suitable for manufacturing, for example, an aluminum wheel for an automobile by rotary forging, having a non-rotationally symmetric shape formed on the circumference with a constant amplitude. It is about.
【０００２】[0002]
【従来の技術】適当な寸法に切断した素材を垂直主軸を
中心に回転する下型で保持し、この下型に対向して配置
した円錐形状の上型を、垂直主軸に対して所要の角度で
傾斜回転させながら所定の位置まで下降させて素材を局
部的に加圧し、これを次第に変形させて所望の形状の製
品を製造する回転鍛造機は、一般によく知られている。2. Description of the Related Art A material cut to an appropriate size is held by a lower die rotating about a vertical main axis, and a conical upper die arranged opposite to the lower die is rotated at a required angle with respect to the vertical main axis. 2. Description of the Related Art A rotary forging machine that locally lowers a material by lowering it to a predetermined position while tilting and rotating it to gradually deform the material to manufacture a product having a desired shape is generally well known.
【０００３】しかしながら、このような回転鍛造機にお
いては、上型と下型の回転は完全には同期されておら
ず、回転する下型に対して上型が傾斜回転しながら下降
して局部加圧するので、従来は、もっぱら回転対称形状
の製品の製造に使用されていた。However, in such a rotary forging machine, the rotations of the upper die and the lower die are not completely synchronized, and the upper die descends while rotating obliquely with respect to the rotating lower die, thereby causing a local addition. In the past, it was used exclusively for the production of products with rotationally symmetrical shapes.
【０００４】[0004]
【考案が解決しようとする課題】ところで、近年、自動
車の省エネルギ対策等を目的として、例えば図２に示す
ような、アルミホイール１が多く採用されるようになっ
てきた。このようなアルミホイールは、スポーク面１ａ
の円周上に非回転対称な形状を一定の振幅をもって形成
しているので、上記した従来の上型と下型の回転が完全
に同期していない回転鍛造機では製造できなかった。な
お、上型と下型を同期させる手段としては、電気的ある
いはプレス機構の改造によって可能ではあるが、多額の
設備投資が必要であるという問題がある。In recent years, aluminum wheels 1 as shown in FIG. 2, for example, have been widely used for the purpose of saving energy of automobiles. Such an aluminum wheel has a spoke surface 1a
Since the non-rotationally symmetric shape is formed with a constant amplitude on the circumference of the above, the above-described conventional rotary forging machine in which the rotation of the upper die and the lower die are not completely synchronized cannot be produced. As a means for synchronizing the upper mold and the lower mold, it is possible to electrically or remodel the press mechanism, but there is a problem that a large capital investment is required.
【０００５】本考案は、上記した問題点に鑑みてなされ
たものであり、アルミホイールのような、円周上に非回
転対称な形状を一定の振幅で有する製品を、回転鍛造機
を用いて製造可能な回転鍛造機における同期機構を提供
することを目的としている。The present invention has been made in view of the above-mentioned problems, and a product having a non-rotationally symmetrical shape with a constant amplitude on a circumference, such as an aluminum wheel, is formed using a rotary forging machine. It is an object of the present invention to provide a synchronizing mechanism in a rotary forging machine that can be manufactured.
【０００６】[0006]
【課題を解決するための手段】上記した目的を達成する
ために本考案の回転鍛造機における同期機構は、粗地鍛
造した素材を、円周上に一定の振幅をもって交互に凹凸
部を形成した対をなす上型と下型を使用して、円周上に
非回転対称な形状を一定振幅をもって形成した製品に仕
上げ鍛造するための回転鍛造機における同期機構であっ
て、上型と下型の外周部分に、上型を傾斜した状態で回
転させつつ下降させて下型とで回転鍛造する時に、少な
くともこれらの一部が噛合するようにリングギアをそれ
ぞれ設置した構成としているのである。In order to achieve the above-mentioned object, a synchronous mechanism in a rotary forging machine according to the present invention is formed by forming irregularities on a blank ground forged material alternately with a constant amplitude on a circumference. A synchronous mechanism in a rotary forging machine for finish-forging a non-rotationally symmetrical shape with a constant amplitude on the circumference using a pair of upper and lower dies. At the time of lowering the upper die while rotating it in an inclined state and rotating and forging it with the lower die, ring gears are arranged on the outer peripheral portion of the outer die so that at least a part of the ring gears mesh with each other.
【０００７】[0007]
【作用】本考案の回転鍛造機における同期機構は、回転
鍛造機の上型と下型の外周部分に、上型を傾斜した状態
で回転させつつ下降させて下型とで回転鍛造する時に、
少なくともこれらの一部が噛合するようにリングギアを
それぞれ設置したので、上型と下型が同期して同調回転
し、円周上に一定の振幅をもって交互に形成した対をな
す上型の凹部と下型の凸部、及び上型の凸部と下型の凹
部とで、粗地鍛造した素材の円周上に非回転対称な形状
を一定振幅をもって形成できる。[Function] The synchronous mechanism in the rotary forging machine of the present invention is used for rotating the upper die and the lower die on the outer peripheral portion of the rotary forging machine while rotating the upper die in an inclined state and lowering the rotary die with the lower die.
Since the ring gears are installed so that at least a part of them mesh with each other, the upper die and the lower die rotate synchronously in synchronization, and a pair of upper die recesses formed alternately with a constant amplitude on the circumference. A non-rotationally symmetric shape with a constant amplitude can be formed on the circumference of the raw material that has been forged with rough ground, with the convex portion of the lower die and the convex portion of the lower die and the concave portion of the lower die.
【０００８】[0008]
【実施例】以下、本考案の回転鍛造機における同期機構
を、図１に示す１実施例に基づいて説明する。図１は本
考案の回転鍛造機における同期機構の１例を断面して示
す図面である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A synchronous mechanism in a rotary forging machine according to the present invention will be described below with reference to an embodiment shown in FIG. FIG. 1 is a sectional view showing an example of a synchronous mechanism in the rotary forging machine of the present invention.
【０００９】図１において、１１は回転鍛造機の上ホル
ダー１２に型１３を介して取り付けられた上型、１４は
同じく下ホルダー１５に取り付けられた下型であり、こ
のうち上型１１には、製造しようとするアルミホイール
１のスポーク面１ａの凹凸を形成すべき凹部（図示せ
ず）と凸部１１ａが形成され、また下型１４には、上型
１１の前記凹部及び凸部１１ａに嵌入してスポーク面１
ａの凹凸を形成する凸部１４ａと凹部（図示せず）を形
成している。In FIG. 1, reference numeral 11 denotes an upper die attached to an upper holder 12 of a rotary forging machine via a die 13, and 14 denotes a lower die also attached to a lower holder 15, of which the upper die 11 has A concave portion (not shown) and a convex portion 11a for forming irregularities of the spoke surface 1a of the aluminum wheel 1 to be manufactured are formed, and the lower die 14 is provided with the concave portion and the convex portion 11a of the upper die 11. Spoke surface 1
The projections 14a and the depressions (not shown) that form the irregularities a are formed.
【００１０】１６は前記した上型１１の外周に配置され
た上バンド、１７は下型１４の外周に配置した下バンド
であり、このうちの上バンド１６の外周にリングギア１
８を設置し、また、下バンド１７の外周にリングギア１
９を設置している。そして、これらリングギア１８・１
９は、上型１１を傾斜した状態で回転させつつ下降させ
て下型１４とで回転鍛造する時に、少なくともこれらの
一部が噛合するようになされている。Reference numeral 16 denotes an upper band arranged on the outer periphery of the above-mentioned upper mold 11, and 17 denotes a lower band arranged on the outer periphery of the lower mold 14.
8 and a ring gear 1 on the outer periphery of the lower band 17.
9 are installed. And these ring gears 18.1
Numeral 9 is such that at least a part of the upper mold 11 is engaged when the upper mold 11 is rotated and forged with the lower mold 14 while being rotated while being inclined.
【００１１】本考案の回転鍛造機における同期機構は上
記したような構成であり、したがって、かかる状態で上
型１１と下型１４を回転させた場合には、リングギア１
８・１９の噛合によって上型１１と下型１４は完全に同
期することになって、上記したように凹凸部を設けた対
をなす上型１１と下型１４を使用すれば、円周上に非回
転対称な形状を一定振幅をもって形成した例えばアルミ
ホイールを回転鍛造機を用いて仕上げ鍛造できることに
なる。The synchronous mechanism in the rotary forging machine of the present invention has the above-described configuration. Therefore, when the upper die 11 and the lower die 14 are rotated in such a state, the ring gear 1 is rotated.
The upper mold 11 and the lower mold 14 are completely synchronized by the engagement of the pieces 8 and 19, and if the upper mold 11 and the lower mold 14 which form a pair having the concave and convex portions as described above are used, the circumference becomes larger. For example, an aluminum wheel having a non-rotationally symmetric shape with a constant amplitude can be finish forged using a rotary forging machine.
【００１２】本考案の同期機構を備えた回転鍛造機を用
いてアルミホイールを製造するには、先ず、製造するア
ルミホイールの大きさ等に基づいて所定の大きさの鋼片
を切断し、この鋼片を据え込み鍛造によって粗地鍛造す
る。そして、この粗地鍛造した素材を回転鍛造してアル
ミホイールを製造するのであるが、従来の回転鍛造機で
はアルミホイール１のような、円周上に非回転対称な形
状を一定の振幅をもって形成しているスポーク面１ａを
有する製品は製造できない。In order to manufacture an aluminum wheel using the rotary forging machine having the synchronization mechanism of the present invention, first, a steel piece having a predetermined size is cut based on the size of the aluminum wheel to be manufactured. The steel slab is forged in rough ground by upsetting forging. The aluminum wheel is manufactured by rotating and forging this rough ground forged material. In a conventional rotating forging machine, a non-rotationally symmetrical shape like the aluminum wheel 1 is formed on the circumference with a constant amplitude. A product having a spoke surface 1a cannot be manufactured.
【００１３】しかし、本考案の同期機構を備えた回転鍛
造機では、上型１１を傾斜した状態で回転させつつ下降
させれば、リングギア１８と１９の一部が噛合するの
で、上型１１と下型１４が同期して回転することにな
り、これによって、対をなす上型１１の凹部と下型１４
の凸部１４ａ、及び上型１１の凸部１１ａと下型１４の
凹部が次々と合致し、局部的に回転鍛造成形が行われて
仕上げ鍛造を行い、アルミホイール１が製造される。However, in the rotary forging machine having the synchronization mechanism of the present invention, if the upper die 11 is lowered while rotating while being inclined, the ring gears 18 and 19 partially mesh with each other. And the lower mold 14 rotate in synchronization with each other, whereby the pair of recesses of the upper mold 11 and the lower mold 14 are rotated.
The convex portion 14a of the upper die 11, the convex portion 11a of the upper die 11, and the concave portion of the lower die 14 are successively matched, and rotary forging is locally performed to perform finish forging, thereby manufacturing the aluminum wheel 1.
【００１４】なお、本実施例では上型１１と下型１４の
外周にそれぞれ上バンド１６と下バンド１７を配置し、
これらで金型を構成したものを示したので、これら上バ
ンド１６と下バンド１７の外周にリングギア１８と１９
を設置しているが、上型と下型のみで金型を構成したも
のであれば、上型と下型の外周にリングギアを設置する
ことは言うまでもない。In this embodiment, an upper band 16 and a lower band 17 are arranged on the outer periphery of the upper mold 11 and the lower mold 14, respectively.
Since these parts constitute a mold, ring gears 18 and 19 are provided on the outer periphery of the upper band 16 and the lower band 17.
It is needless to say that a ring gear is installed on the outer periphery of the upper mold and the lower mold as long as the mold is constituted only by the upper mold and the lower mold.
【００１５】[0015]
【考案の効果】以上説明したように、本考案によれば、
きわめて安価な設備投資で回転鍛造機における上型と下
型の同期が可能となり、したがって、アルミホイールの
ような、円周上に非回転対称な形状を一定の振幅をもっ
て形成した製品を、高歩留りで、かつ、安定して製造で
きる。[Effects of the Invention] As described above, according to the present invention,
It is possible to synchronize the upper and lower dies in a rotary forging machine with extremely low capital investment, and therefore, products with non-rotationally symmetrical shapes formed with a certain amplitude on the circumference, such as aluminum wheels, can be produced at high yield. And can be manufactured stably.
【図１】本考案の回転鍛造機における同期機構の１例を
断面して示す図面である。FIG. 1 is a sectional view showing an example of a synchronization mechanism in the rotary forging machine of the present invention.
【図２】本考案の同期機構を使用した回転鍛造機を用い
て製造したアルミホイールの１例を示す正面図である。FIG. 2 is a front view showing an example of an aluminum wheel manufactured using a rotary forging machine using the synchronization mechanism of the present invention.
１１ 上型 １４ 下型 １８ リングギア １９ リングギア 11 Upper die 14 Lower die 18 Ring gear 19 Ring gear
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭59−143544（ＪＰ，Ｕ) 実開 昭50−70602（ＪＰ，Ｕ) 実開 昭62−155933（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 59-143544 (JP, U) Japanese Utility Model Showa 50-70602 (JP, U) Japanese Utility Model Showa 62-155933 (JP, U)
Claims (1)
幅をもって交互に凹凸部を形成した対をなす上型と下型
を使用して、円周上に非回転対称な形状を一定振幅をも
って形成した製品に仕上げ鍛造するための回転鍛造機に
おける同期機構であって、上型と下型の外周部分に、上
型を傾斜した状態で回転させつつ下降させて下型とで回
転鍛造する時に、少なくともこれらの一部が噛合するよ
うにリングギアをそれぞれ設置したことを特徴とする回
転鍛造機における同期機構。1. A non-rotationally symmetric shape is formed on a circumferentially forged material by using a pair of upper and lower dies, each having a pair of concave and convex portions formed alternately with a constant amplitude on the circumference. This is a synchronous mechanism in a rotary forging machine for finish forging to a product formed with a constant amplitude.The upper and lower dies are rotated around the outer periphery of the upper and lower dies while rotating the upper dies in an inclined state and rotating with the lower dies. A synchronizing mechanism in a rotary forging machine, wherein a ring gear is provided so that at least a part of the ring gears mesh with each other during forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2159093U JP2535700Y2 (en) | 1993-03-31 | 1993-03-31 | Synchronous mechanism in rotary forging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2159093U JP2535700Y2 (en) | 1993-03-31 | 1993-03-31 | Synchronous mechanism in rotary forging machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0677943U JPH0677943U (en) | 1994-11-01 |
| JP2535700Y2 true JP2535700Y2 (en) | 1997-05-14 |
Family
ID=12059259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2159093U Expired - Lifetime JP2535700Y2 (en) | 1993-03-31 | 1993-03-31 | Synchronous mechanism in rotary forging machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2535700Y2 (en) |
-
1993
- 1993-03-31 JP JP2159093U patent/JP2535700Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0677943U (en) | 1994-11-01 |
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