JPH0729174B2 - Gear material forming equipment - Google Patents
Gear material forming equipmentInfo
- Publication number
- JPH0729174B2 JPH0729174B2 JP12107590A JP12107590A JPH0729174B2 JP H0729174 B2 JPH0729174 B2 JP H0729174B2 JP 12107590 A JP12107590 A JP 12107590A JP 12107590 A JP12107590 A JP 12107590A JP H0729174 B2 JPH0729174 B2 JP H0729174B2
- Authority
- JP
- Japan
- Prior art keywords
- mold part
- gear material
- die
- wall surface
- gear
- 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 - Fee Related
Links
Landscapes
- Forging (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、円盤部と、該円盤部の側面にこれより小径の
外歯付筒状部とを有する主として車両用油圧式自動変速
装置に組込まれるクラッチギヤ用の歯車素材の成形装置
に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is mainly applied to a hydraulic automatic transmission for a vehicle, which has a disc portion and a cylindrical portion with an outer tooth having a diameter smaller than the disc portion on a side surface thereof. The present invention relates to a gear material forming device for a clutch gear to be incorporated.
（従来の技術） 従来、第１図に示す如く、昇降自在のラムの下面に取付
けたパンチａと、ボルスターの上側に設けられ歯車素材
の円盤部の外径を規定する内壁面ｂと歯車素材の外歯付
筒状部の歯形を成形する歯形成形部ｃとを有するダイｄ
とを備える成形装置は知られ、このものでは該ダイｄは
前記内壁面ｂと前記歯形成形部ｃとを有する一体のもの
で構成されるを一般としている。(Prior Art) Conventionally, as shown in FIG. 1, a punch a attached to the lower surface of a ram that can be raised and lowered, an inner wall surface b that is provided on the upper side of a bolster and defines the outer diameter of the disc portion of the gear material, and the gear material. A die d having a tooth forming portion c for forming the tooth profile of the external toothed tubular portion of
There is known a molding apparatus including a die, and in this case, the die d is generally constituted by an integral body having the inner wall surface b and the tooth forming shape portion c.
（発明が解決しようとする課題） 成形に際しては、ダイｄに円形素材をセットしてからパ
ンチａを押込むもので、この場合先ずパンチａにより素
材が潰されダイｄの内壁面ｂに素材が密着してその内圧
が高まったところで外歯付筒状部の押出し成形が始まる
が、上記した従来のものでは、ダイｄの内壁面ｂが上下
方向に動かないため素材と内壁面ｂとの間の摩擦抵抗が
大きくなって、大きな成形荷重が必要になる。(Problems to be Solved by the Invention) At the time of molding, a circular material is set in the die d and then the punch a is pushed in. In this case, the material is first crushed by the punch a and the material is placed on the inner wall surface b of the die d. Extrusion molding of the tubular part with external teeth starts when the internal pressure increases due to close contact, but in the above-mentioned conventional one, since the inner wall surface b of the die d does not move in the vertical direction, there is a gap between the material and the inner wall surface b. The frictional resistance of is large and a large forming load is required.
本発明の目的は、成形荷重を軽減できるようにした成形
装置を提供することにある。An object of the present invention is to provide a molding device capable of reducing the molding load.
（課題を解決するための手段） 上記目的を達成すべく、本発明では、円盤部と、該円盤
部の側面にこれより小径の外歯付筒状部とを有する歯車
素材の成形装置であって、昇降自在のラムの下面に取付
けたパンチと、ボルスターの上面に設けられ歯車素材の
円盤部の外径を規定する内壁面と歯車素材の外歯付筒状
部の歯形を成形する歯形成形部とを有するダイとを備え
るものにおいて、前記ダイを、前記歯形成形部を有し前
記ボルスターに固定したインナ型部と、前記内壁面を有
し該インナ型部の外周のアウタ型部とで構成すると共
に、該アウタ型部を該インナ型部に対しばねに抗して下
降自在としたことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention is a gear material molding apparatus having a disc portion and a cylindrical portion with an external tooth having a diameter smaller than that of the disc portion on a side surface thereof. The punch attached to the lower surface of the ram that can be raised and lowered, the inner wall surface that is provided on the upper surface of the bolster and defines the outer diameter of the disk portion of the gear material, and the tooth forming shape that forms the tooth profile of the cylindrical portion with external teeth of the gear material. A die having a portion, the die is an inner die portion having the tooth forming portion and fixed to the bolster, and an outer die portion having an inner wall surface and an outer periphery of the inner die portion. In addition to being configured, the outer mold part can be lowered with respect to the inner mold part against a spring.
（作用） パンチの押込みにより素材が潰されてアウタ型部の内壁
面に密着しても、アウタ型部が素材に引き摺られて下降
するため素材との間の摩擦抵抗が少なくなって、成形荷
重が減少される。(Function) Even if the material is crushed by pushing the punch and comes into close contact with the inner wall surface of the outer mold part, the outer mold part is dragged down by the material and descends, so that the friction resistance between the material and the outer mold part is reduced, and the molding load is reduced. Is reduced.
（実施例） 第２図及び第３図を参照して、（１）はラム（２）の下
面に止め輪（３）を介して取付けたパンチ、（４）は図
示しないボルスターの上面に設けたダイを示し、該ダイ
（４）には歯車素材Ａの円盤部Ｂの外径を規定する内壁
面（５）と、歯車素材Ａの外歯付筒状部Ｃの歯形を成形
する歯形成形部（６）とが形成されており、該ダイ
（４）の下側にバックアップレート（７）とその下側の
心型ホルダ（８）とを設け、該心型ホルダ（８）に、歯
車素材Ａの軸孔Ｄ1を規定する内心型（９）と歯車素材
Ａの外歯付筒状部Ｃの内径Ｄ2を規定する該内心型
（９）の外周の外心型（10）とを立設して、該両心型
（９）（10）を前記ダイ（４）内に該バックアッププレ
ート（７）の透孔（7a）を通して臨ませた。(Embodiment) Referring to FIGS. 2 and 3, (1) is a punch attached to the lower surface of a ram (2) via a retaining ring (3), and (4) is provided on the upper surface of a bolster (not shown). The die (4) has an inner wall surface (5) that defines the outer diameter of the disk portion B of the gear material A, and a tooth forming shape that forms the tooth profile of the outer toothed cylindrical portion C of the gear material A. And a backup rate (7) and a core type holder (8) below the backup rate (7), and the core type holder (8) is provided with a gear. An inner core die (9) defining the axial hole D 1 of the material A and an outer core die (10) on the outer periphery of the inner core die (9) defining the inner diameter D 2 of the outer toothed tubular portion C of the gear material A. The two core types (9) and (10) were exposed in the die (4) through the through holes (7a) of the backup plate (7).
また、前記外心型（10）の外周に筒状のノックアウト
（11）をばね（11a）に抗して上動自在に設けると共
に、該ノックアウト（11）の下側にプッシュロッド（1
2）を設けた。Further, a cylindrical knockout (11) is provided on the outer periphery of the outer core type (10) so as to be movable upward against the spring (11a), and a push rod (1) is provided below the knockout (11).
2) is provided.
そして、前記ダイ（４）を、前記歯形成形部（６）を有
するインナ型部（13）と、前記内壁面（５）を有する該
インナ型部（13）の外周のアウタ型部（14）とで構成
し、該インナ型部（13）を前記バックアッププレート
（７）に固定し、該アウタ型部（14）をばね（15）に抗
して下降自在に設けた。Then, the die (4) is divided into an inner mold part (13) having the tooth forming profile (6) and an outer mold part (14) on the outer periphery of the inner mold part (13) having the inner wall surface (5). The inner mold part (13) is fixed to the backup plate (7), and the outer mold part (14) is provided so as to be lowered against the spring (15).
図面で（16）はパンチ（１）を冷却するエアーノズル、
（17）はダイ（４）に潤滑液を噴射する潤滑液ノズル、
（18）は潤滑液を外部に排出する排出通路を示す。In the drawing, (16) is an air nozzle for cooling the punch (1),
(17) is a lubricating liquid nozzle for injecting lubricating liquid to the die (4),
(18) indicates a discharge passage for discharging the lubricating liquid to the outside.
次に上記実施例の作用を説明する。Next, the operation of the above embodiment will be described.
先ず、800〜900℃に加熱した孔明き円形素材ｗをダイ
（４）内に第２図示の如く該素材ｗが内心型（９）によ
り位置決めされるようにセットしてパンチ（１）を押し
込む。First, a perforated circular material w heated to 800 to 900 ° C. is set in the die (4) so that the material w is positioned by the inner core die (9) as shown in the second drawing, and the punch (1) is pushed in. .
これによれば、素材ｗが潰されアウタ型部（14）の内壁
面（５）に素材ｗが密着してその内圧が高かったところ
で歯付筒状部の押出し成形が始まり、引き続くパンチ
（１）の押込みにより歯付筒状部Ｃが押出し成形される
（第３図示の状態）。According to this, when the material w is crushed and the material w is brought into close contact with the inner wall surface (5) of the outer mold part (14) and the internal pressure is high, extrusion molding of the toothed tubular part starts and the punch (1) continues. ), The tubular portion C with teeth is extruded (state shown in FIG. 3).
この場合、素材ｗが潰されてアウタ型部（14）の内壁面
（５）に密着しても、アウタ型部（14）が素材に引き摺
られてばね（15）に抗して下動されるため、素材と内壁
面（５）との間の摩擦抵抗が減少される。In this case, even if the material w is crushed and comes into close contact with the inner wall surface (5) of the outer mold part (14), the outer mold part (14) is dragged by the material and moved downward against the spring (15). Therefore, the frictional resistance between the material and the inner wall surface (5) is reduced.
上記実施例では、アウタ型部（14）が素材との間の摩擦
力で下動されるようにしたが、この場合、アウタ型部
（14）の内壁面（５）と素材との間に多少とも滑りを生
じて歯車素材Ａの円盤部Ｂの外周面の傷付きが懸念され
る。In the above embodiment, the outer mold part (14) is moved downward by the frictional force between the outer mold part (14) and the material, but in this case, the outer mold part (14) is moved between the inner wall surface (5) of the outer mold part (14) and the material. There is a concern that the outer peripheral surface of the disc portion B of the gear material A may be damaged due to some slippage.
そこで、第５図及び第６図に示す如く、アウタ型部（1
4）の内壁面（５）の下側部に、パンチ（１）の成形力
を受ける比較的小さな段差面から成る受け部（19）を設
け、歯付筒状部Ｂの押出し成形に際して第６図示の如
く、アウタ型部（14）が素材の変形と共に下動されるよ
うにし、上記不具合を防止し得るようにした。Therefore, as shown in FIGS. 5 and 6, the outer mold part (1
On the lower side of the inner wall surface (5) of (4), a receiving portion (19) consisting of a relatively small step surface for receiving the forming force of the punch (1) is provided, and when the toothed tubular portion B is extruded, a sixth portion is formed. As shown in the figure, the outer mold part (14) is moved downward along with the deformation of the material to prevent the above-mentioned problems.
（発明の効果） このように本発明によれば、歯車素材の円盤部の外径を
規定する内壁面を有するアウタ型部を歯形成形部を有す
るインナ型部に対し下動自在とするため、素材との間の
摩擦抵抗が減少し、成形荷重を低減できる効果を有す
る。As described above, according to the present invention, since the outer die portion having the inner wall surface defining the outer diameter of the disc portion of the gear material can be moved downward with respect to the inner die portion having the tooth forming portion, The frictional resistance with the material is reduced, and the molding load can be reduced.
第１図は従来例を示す歯車素材成形装置の截断正面図、
第２図は本発明成形装置の一例を示す要部の截断正面
図、第３図はその作動状態を示す図、第４図は歯車素材
の截断正面図、第５図は本発明の他の実施例を示す成形
装置の要部の截断正面図、第６図はその作動状態を示す
図である。 （１）……パンチ （２）……ラム （４）……ダイ （５）……内壁面 （６）……歯形成形部 （13）……インナ型部 （14）……アウタ型部 （15）……ばね Ａ……歯車素材 Ｂ……円盤部 Ｃ……外歯付筒状部FIG. 1 is a cutaway front view of a gear material forming apparatus showing a conventional example,
2 is a cutting front view of a main part showing an example of the molding apparatus of the present invention, FIG. 3 is a view showing its operating state, FIG. 4 is a cutting front view of a gear material, and FIG. 5 is another drawing of the present invention. FIG. 6 is a cutaway front view of a main part of a molding apparatus showing an embodiment, and FIG. 6 is a view showing its operating state. (1) …… Punch (2) …… Ram (4) …… Die (5) …… Inner wall surface (6) …… Tooth forming profile (13) …… Inner mold part (14) …… Outer mold part ( 15) …… Spring A …… Gear material B …… Disc part C …… Cylindrical part with external teeth
フロントページの続き (72)発明者 目黒 晴夫 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 (72)発明者 原田 芳男 愛知県豊橋市植田町字神戸坂22番地 (72)発明者 村田 真一 愛知県豊橋市南大清水町字富士見357番地 の１Front Page Continuation (72) Inventor Haruo Meguro 1-10-1 Shin-Sayama, Sayama City, Saitama Prefecture Inside Honda Engineering Co., Ltd. (72) Inventor Yoshio Harada 22 Kobesaka, Ueda-cho, Toyohashi City, Aichi (72) Invention Person Murata Shinichi 1 of 357 Fujimi, Minami-Oshimizu-cho, Toyohashi City, Aichi Prefecture
Claims (1)
の外歯付筒状部とを有する歯車素材の成形装置であっ
て、昇降自在のラムの下面に取付けたパンチと、ボルス
ターの上面に設けられ歯車素材の円盤部の外径を規定す
る内壁面と歯車素材の外歯付筒状部の歯形を成形する歯
形成形部とを有するダイとを備えるものにおいて、前記
ダイを、前記歯形成形部を有し前記ボルスターに固定し
たインナ型部と、前記内壁面を有し該インナ型部の外周
のアウタ型部とで構成すると共に、該アウタ型部を該イ
ンナ型部に対してばねに抗して下降自在としたことを特
徴とする歯車素材の成形装置。1. A molding apparatus for a gear material, comprising a disc portion and a cylindrical portion with external teeth having a diameter smaller than the disc portion on a side surface thereof, the punch being mounted on the lower surface of a ram which can be raised and lowered, and a bolster. A die having an inner wall surface that is provided on the upper surface of the gear material and defines the outer diameter of the disk portion of the gear material, and a tooth forming shape portion that molds the tooth profile of the externally toothed tubular portion of the gear material, The inner mold part having the tooth forming part and fixed to the bolster, and the outer mold part having the inner wall surface on the outer periphery of the inner mold part, and the outer mold part with respect to the inner mold part. A gear material forming device characterized by being able to descend freely against a lever spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12107590A JPH0729174B2 (en) | 1990-05-11 | 1990-05-11 | Gear material forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12107590A JPH0729174B2 (en) | 1990-05-11 | 1990-05-11 | Gear material forming equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0417937A JPH0417937A (en) | 1992-01-22 |
| JPH0729174B2 true JPH0729174B2 (en) | 1995-04-05 |
Family
ID=14802231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12107590A Expired - Fee Related JPH0729174B2 (en) | 1990-05-11 | 1990-05-11 | Gear material forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729174B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189083B (en) | 2005-03-04 | 2011-01-12 | 新加坡科技研究局 | Method and apparatus for forging |
-
1990
- 1990-05-11 JP JP12107590A patent/JPH0729174B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0417937A (en) | 1992-01-22 |
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