JPH05169174A - Method for forming cup shape toothed product - Google Patents
Method for forming cup shape toothed productInfo
- Publication number
- JPH05169174A JPH05169174A JP3332188A JP33218891A JPH05169174A JP H05169174 A JPH05169174 A JP H05169174A JP 3332188 A JP3332188 A JP 3332188A JP 33218891 A JP33218891 A JP 33218891A JP H05169174 A JPH05169174 A JP H05169174A
- Authority
- JP
- Japan
- Prior art keywords
- peripheral wall
- cup
- tooth
- base material
- shaped material
- 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.)
- Granted
Links
Landscapes
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、油圧クラッチのインナ
部材（クラッチインナ）等に用いられるカップ状歯付製
品の成形方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding a cup-shaped toothed product used for an inner member (clutch inner) of a hydraulic clutch.
【０００２】[0002]
【従来の技術】従来、実公昭６１−３０７４７号公報に
より、絞り成形された板金製のカップ状素材の周壁を周
方向に間隔を存して配置して配置した放射方向内方に進
退自在な複数のパンチにより該周壁と素材底壁とのコー
ナ部を含めて内方に押し込んで該周壁にコーナ部に亘る
歯形をプレス成形する方法は知られている。2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Publication No. 61-30747, a cup-shaped blank made of a sheet metal formed by drawing is movable inward and outward in a radial direction in which circumferential walls are arranged at intervals in the circumferential direction. A method is known in which a plurality of punches are pushed inward including the corners of the peripheral wall and the bottom wall of the material to press-form a tooth profile extending over the corners of the peripheral wall.
【０００３】[0003]
【発明が解決しようとする課題】上記のものでは、図６
に示す如く、パンチａが素材Ｗの周壁Ｗａと底壁Ｗｂと
のコーナ部に食い込んで素材Ｗの底面に余肉の盛上り部
ｂができ、製品が例えばクラッチインナであるときは、
底面に対向配置されるクラッチアウタの側板部に盛上り
部ｂが干渉するため、後加工で盛上り部ｂを除去する必
要があって、工程数が増す不具合がある。本発明は、以
上の点に鑑み、素材底面に余肉が盛上らないようにした
カップ状歯付製品の成形方法を提供することをその目的
としている。In the above, FIG.
As shown in, the punch a bites into the corners of the peripheral wall Wa and the bottom wall Wb of the material W to form a raised portion b of extra thickness on the bottom surface of the material W, and when the product is, for example, a clutch inner,
Since the raised portion b interferes with the side plate portion of the clutch outer arranged to face the bottom surface, it is necessary to remove the raised portion b by post-processing, which causes a problem that the number of steps increases. The present invention has been made in view of the above points, and an object thereof is to provide a method for forming a cup-shaped toothed product in which excess material is prevented from rising on the bottom surface of the material.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成すべく、
本発明は、板金を絞り成形してカップ状素材を形成し、
該カップ状素材の周壁を周方向に間隔を存して配置した
放射方向内方に進退自在な複数のパンチにより内方に押
し込んで該周壁に歯形をプレス成形する方法において、
カップ状素材の絞り成形時に、該素材の周壁と底壁との
コーナ部のうち前記歯形の歯溝となる部分に内方に窪ま
せた凹入部を形成し、歯形のプレス成形時に、各パンチ
によりカップ状素材の周壁を前記凹入部を含めて内方に
押し込んで該周壁に前記コーナ部に亘る歯形を形成する
ことを特徴とする。[Means for Solving the Problems] In order to achieve the above object,
The present invention draws a sheet metal to form a cup-shaped material,
In a method of press-forming a tooth profile on the peripheral wall by pushing the peripheral wall of the cup-shaped material inward by a plurality of punches that are arranged at intervals in the circumferential direction and can move forward and backward in the radial direction,
When drawing a cup-shaped material, an indented recess is formed in a portion of the corner of the peripheral wall and the bottom wall of the material that will be the tooth groove of the tooth profile. With this, the peripheral wall of the cup-shaped material is pushed inward including the recessed portion to form a tooth profile extending over the corner portion on the peripheral wall.
【０００５】[0005]
【作用】素材コーナ部に歯溝に対応する凹入部が予備成
形されているため、歯形のプレス成形時におけるコーナ
部の圧縮量が少なくなり、素材底面に余肉の盛上り部を
生じない。Since the concave portion corresponding to the tooth groove is preformed on the material corner portion, the amount of compression of the corner portion at the time of press-forming the tooth profile is reduced, and a bulge portion of excess thickness is not formed on the bottom surface of the material.
【０００６】[0006]
【実施例】図１はカップ状素材Ｗを絞り成形するプレス
金型を示し、該金型は雄型たる下型１と雌型たる上型２
とで構成され、下型１の周囲に上方に付勢して設けたブ
ランクホルダ３と上型２との間に板金から成るブランク
を挟持した状態で上型２を下降させることによりカップ
状素材Ｗを絞り成形する。EXAMPLE FIG. 1 shows a press die for drawing a cup-shaped material W. The die is a male lower mold 1 and a female upper mold 2.
A cup-shaped material by lowering the upper mold 2 with a blank made of sheet metal sandwiched between a blank holder 3 and an upper mold 2 which are urged upward around the lower mold 1. W is drawn.
【０００７】上型２内には、素材Ｗの底壁Ｗｂを下型１
との間に挾圧するブランク押え４が設けられており、該
ブランク押え４の下面周縁部に下方に突出する凸部５を
図２に示す如く周方向に間隔を存して複数突設し、また
下型１の上面周縁部に前記凸部５に対応する複数の凹部
６を形成し、素材Ｗの絞り成形時に、素材Ｗの周壁Ｗａ
と底壁Ｗｂとのコーナ部に該凸部５と該凹部６とによっ
て内方に窪んだ凹入部Ｗｃを形成するようにした。In the upper mold 2, the bottom wall Wb of the material W is placed in the lower mold 1.
A blank presser 4 is provided between the blank presser 4 and, and a plurality of projecting portions 5 projecting downward are provided at the peripheral edge of the lower surface of the blank presser 4 at intervals in the circumferential direction, as shown in FIG. Further, a plurality of concave portions 6 corresponding to the convex portions 5 are formed on the peripheral portion of the upper surface of the lower mold 1, and the peripheral wall Wa of the material W is formed at the time of drawing the material W.
The convex portion 5 and the concave portion 6 form a concave portion Wc that is recessed inward at the corner portion of the bottom wall Wb.
【０００８】上記の如く絞り成形された素材Ｗはトリミ
ング後に歯形成形用のプレス金型にセットされ、素材Ｗ
の周壁Ｗａに歯形がプレス成形される。これを詳述する
に、該プレス金型は、図３及び図４に示す如く、外周面
に周方向に間隔を存して複数の歯溝７ａを形成したダイ
７と、該ダイ７の周囲に周方向に間隔を存して配置した
複数のパンチ８とを備えるもので、各パンチ８を放射方
向内方に進退自在とし、カップ状素材Ｗを下向きにして
ダイ７に被せた後、図示しない上型の下降により、図５
に示す如く、上型に垂設したドライバカム９を介してパ
ンチ８を放射方向内方に前進させ、パンチ８により素材
Ｗの周壁Ｗａをダイ７の歯溝７ａに押し込んで周壁Ｗａ
に歯形をプレス成形する。The material W drawn as described above is set in a tooth forming press die after trimming, and the material W is formed.
A tooth profile is press-molded on the peripheral wall Wa of. To explain this in detail, as shown in FIGS. 3 and 4, the press die includes a die 7 having a plurality of tooth spaces 7a formed on the outer peripheral surface thereof at intervals in the circumferential direction, and a periphery of the die 7. And a plurality of punches 8 arranged at intervals in the circumferential direction, each of the punches 8 can be moved forward and backward in the radial direction, and the cup-shaped material W is faced downward and placed on the die 7, Do not lower the upper mold,
As shown in FIG. 5, the punch 8 is advanced inward in the radial direction via a driver cam 9 vertically provided on the upper die, and the peripheral wall Wa of the material W is pushed into the tooth groove 7a of the die 7 by the punch 8 to move the peripheral wall Wa.
Press-mold the tooth profile.
【０００９】ここで、前記凹入部Ｗｄはダイ７の歯溝７
ａと等ピッチで形成されており、素材Ｗをダイ７に各凹
入部Ｗｃが各歯溝７ａに合致するようにセットし、各パ
ンチ８により素材Ｗの周壁Ｗａを各凹入部Ｗｃを含めて
各歯溝７ａに押し込み、該周壁Ｗａにコーナ部に亘る歯
形をプレス成形するようした。この際、コーナ部に凹入
部Ｗｃが予備成形されているため、コーナ部の圧縮量が
少なくなり、素材底面に余肉が盛上ることはない。Here, the recess Wd is the tooth groove 7 of the die 7.
The material W is formed at the same pitch as a, and the material W is set in the die 7 so that each recess Wc matches each tooth groove 7a, and the peripheral wall Wa of the material W is included by each punch 8 including each recess Wc. The tooth profile was pushed into each tooth groove 7a, and a tooth profile extending over a corner portion was press-formed on the peripheral wall Wa. At this time, since the recessed portion Wc is preformed in the corner portion, the amount of compression in the corner portion is reduced, and excess material does not rise on the bottom surface of the material.
【００１０】[0010]
【発明の効果】以上の説明から明らかなように、本発明
によれば、素材の周壁に底壁とのコーナ部に亘る歯形を
素材底面に余肉の盛上り部を生ずることなくプレス成形
でき、盛上り部の除去工程が不要となって、製造コスト
が安くなる効果を有する。As is apparent from the above description, according to the present invention, it is possible to press-form a tooth profile extending from the peripheral wall of the material to the corner portion of the bottom wall without forming a raised portion on the bottom surface of the material. Further, there is an effect that the manufacturing cost is reduced because the step of removing the raised portion is unnecessary.
【図１】 本発明の素材の絞り成形時に用いるプレス金
型の截断側面図FIG. 1 is a cutaway side view of a press die used when drawing a material of the present invention.
【図２】 図１のII−II線で截断した素材を省略した平
面図FIG. 2 is a plan view in which the material cut along the line II-II in FIG. 1 is omitted.
【図３】 本発明の歯形成形時に用いるプレス金型の側
面図FIG. 3 is a side view of a press die used for forming teeth according to the present invention.
【図４】 その平面図4 is a plan view of FIG.
【図５】 その要部の拡大截断側面図FIG. 5 is an enlarged cutaway side view of the main part.
【図６】 従来例の截断側面図FIG. 6 is a cutaway side view of a conventional example.
【符号の説明】 Ｗ 素材 Ｗａ 周壁 Ｗｂ 底壁 Ｗｃ 凹入部 ８ パンチ[Explanation of reference symbols] W material Wa peripheral wall Wb bottom wall Wc recessed portion 8 punch
Claims (1)
し、該カップ状素材の周壁を周方向に間隔を存して配置
した放射方向内方に進退自在な複数のパンチにより内方
に押し込んで該周壁に歯形をプレス成形する方法におい
て、カップ状素材の絞り成形時に、該素材の周壁と底壁
とのコーナ部のうち前記歯形の歯溝となる部分に内方に
窪ませた凹入部を形成し、歯形のプレス成形時に、各パ
ンチによりカップ状素材の周壁を前記凹入部を含めて内
方に押し込んで該周壁に前記コーナ部に亘る歯形を形成
することを特徴とするカップ状歯付製品の成形方法。1. A sheet metal is drawn to form a cup-shaped material, and a peripheral wall of the cup-shaped material is inwardly moved by a plurality of radially inwardly movable punches arranged at intervals in the circumferential direction. In a method of pressing to form a tooth profile on the peripheral wall, when a cup-shaped material is drawn, a concave portion inwardly depressed in a portion of the corner portion of the peripheral wall and the bottom wall of the material that becomes the tooth groove of the tooth profile. A cup shape characterized by forming an insertion portion and pressing the peripheral wall of the cup-shaped material inwardly including the recessed portion by each punch at the time of press-forming the tooth shape to form a tooth shape extending over the corner portion on the peripheral wall. Molding method for toothed products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3332188A JP2588809B2 (en) | 1991-12-16 | 1991-12-16 | Molding method for cup-shaped toothed products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3332188A JP2588809B2 (en) | 1991-12-16 | 1991-12-16 | Molding method for cup-shaped toothed products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05169174A true JPH05169174A (en) | 1993-07-09 |
| JP2588809B2 JP2588809B2 (en) | 1997-03-12 |
Family
ID=18252157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3332188A Expired - Lifetime JP2588809B2 (en) | 1991-12-16 | 1991-12-16 | Molding method for cup-shaped toothed products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2588809B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0976015A (en) * | 1995-09-18 | 1997-03-25 | Denso Corp | Bending method in press and device therefor |
| CN107020323A (en) * | 2017-04-18 | 2017-08-08 | 苏州铭峰精密机械有限公司 | Spiral groove forming die and the tank filler with helicla flute |
| DE102020133084B3 (en) | 2020-12-11 | 2022-03-24 | Schaeffler Technologies AG & Co. KG | mold and process |
-
1991
- 1991-12-16 JP JP3332188A patent/JP2588809B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0976015A (en) * | 1995-09-18 | 1997-03-25 | Denso Corp | Bending method in press and device therefor |
| CN107020323A (en) * | 2017-04-18 | 2017-08-08 | 苏州铭峰精密机械有限公司 | Spiral groove forming die and the tank filler with helicla flute |
| DE102020133084B3 (en) | 2020-12-11 | 2022-03-24 | Schaeffler Technologies AG & Co. KG | mold and process |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2588809B2 (en) | 1997-03-12 |
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