JPS5911374B2 - Manufacturing method of toothed pulley for engine timing belt - Google Patents
Manufacturing method of toothed pulley for engine timing beltInfo
- Publication number
- JPS5911374B2 JPS5911374B2 JP54055246A JP5524679A JPS5911374B2 JP S5911374 B2 JPS5911374 B2 JP S5911374B2 JP 54055246 A JP54055246 A JP 54055246A JP 5524679 A JP5524679 A JP 5524679A JP S5911374 B2 JPS5911374 B2 JP S5911374B2
- Authority
- JP
- Japan
- Prior art keywords
- forming
- tooth
- semi
- timing belt
- finished product
- 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
Links
Landscapes
- Pulleys (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は例えばギヤ或はタイミングベルトを掛装するプ
ーリ一のように円筒状の軸受部と、歯形を有するリム部
とからなるエンジンのタイミングベルト用歯付プーリ一
を板材のプレス加工によつて一体に形成する製造方法に
関するもので深絞りを必要とする軸受部に接続されるフ
ランジ部の剛性を高めると共に精度を必要とする歯形の
有効歯長を増すようにした製造方法を提供するにある。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a toothed pulley for an engine timing belt, which comprises a cylindrical bearing part and a toothed rim part, such as a pulley on which a gear or timing belt is hung. This relates to a manufacturing method in which plate materials are integrally formed by press working, and the rigidity of the flange part connected to the bearing part, which requires deep drawing, is increased, and the effective tooth length of the tooth profile, which requires precision, is increased. To provide a manufacturing method.
これを図示実施例について説明すると第１図は一枚の板
材を板面を規準面として抜き絞り成形により中央に円筒
部１をかつその周縁に環状のフランジ部２を一体に形成
した第１工程により得られる半製品を示し、第２図は上
記半製品の円筒部１を規準面として３〜４回程度の深絞
り成形により円筒状の軸受部３と段差部を有する環状の
補強リブ４とを一体に形成した第２工程により得られる
半製品を示し、第３図は上記半製品のフランジ部２を規
準面として絞り成形によりフランジ部２の外周にこれと
直交するリム部５を形成する第３工程により得られる半
製品を示し、第４図は上記半製品の軸受部３の頂壁の打
抜き成形により軸受部３に貫通孔６を形成する第４工程
により得られる半製品を示すもので、その際フランジ部
２にも必要に応じて適宜複数個の透孔７が同じく打抜き
成形により形成されるもので、第５図は上記半製品のリ
ム部５をしごき紋り成形により歯形８を形成する第５工
程により得られるプーリ−９を示す。然して前記第２工
程における深絞り成形においては第Ｔ図に示すように設
定された内径をもつ芯金ダイ１４に対し、外径がこれよ
り僅かに小径の関係をもつ円筒状の軸受部３を芯金ダイ
１４に挿入してフランジ部２を拘束後、設定寸法をもつ
芯金パンチ１３を押し込むことにより、軸受部３は芯金
ダイ１４に向つて板厚移動を起すがコーナー部はフラン
ジ部２の拘束によつて板厚移動を制約するようにしてコ
ーナーの板厚が軸受部３の板厚より厚くなるように成形
され、又前記第５工程におけるしごき絞り成形において
は、第Ｔ図に示すようにオス型の整形パンチ１１とパッ
ド１２とで支持される半製品をメス型の整形ダイス１５
に圧入し歯形を形成するものである。歯形を形成する整
形パンチ１１とダイス１５との間隙は歯底Ａと歯先Ｂと
歯面Ｃとにおいて例えば第８図に示すように、横軸にし
ごき段階を縦軸に使用板厚に対する金型のすきまの比率
をとつた場合に、第１段階では歯底Ａ、歯先Ｂ及び歯面
Ｃは共に実質的にしごかれず、単に曲げ加工が行われる
ようにしごき、第２段階以降は歯底Ａ及び歯先Ｂが規定
の形状及び寸法精度が得られるべく、順次しごかれ、そ
れにつれてそれらの板厚が減少される。しかし、歯面Ｃ
は第３段階で初めて実質的なしごきがなされて、特に第
４段階以降では、その板厚が歯底Ａ及び歯先Ｂより薄く
なるようにしごかれる。歯形形状の精度及び歯形の有効
長さをできるだけ長く確保するために歯先の角部ｒ１と
リム部の曲部Ｒ２とのそれぞれの板厚の減少を防ぐと共
に極力その曲げ半径を小さくすることが、本発明のプー
リ一を成形する課題である。To explain this with reference to the illustrated embodiment, Fig. 1 shows the first step in which a cylindrical part 1 is integrally formed in the center and an annular flange part 2 on the periphery of a single plate by drawing and drawing with the plate surface as a reference surface. Fig. 2 shows a semi-finished product obtained by using the cylindrical part 1 of the semi-finished product as a reference plane and deep drawing three to four times to form a cylindrical bearing part 3 and an annular reinforcing rib 4 having a step part. Fig. 3 shows a semi-finished product obtained by the second step in which the flange part 2 of the semi-finished product is formed as a reference plane, and a rim part 5 perpendicular to the outer periphery of the flange part 2 is formed by drawing forming using the flange part 2 of the semi-finished product as a reference plane. The semi-finished product obtained in the third step is shown, and FIG. 4 shows the semi-finished product obtained in the fourth step of forming the through hole 6 in the bearing part 3 by punching the top wall of the bearing part 3 of the semi-finished product. At that time, a plurality of through holes 7 are formed in the flange part 2 as needed by punching, and FIG. The pulley 9 obtained by the fifth step of forming is shown. However, in the deep drawing process in the second step, a cylindrical bearing part 3 whose outer diameter is slightly smaller than the core die 14 having an inner diameter set as shown in FIG. After inserting into the core metal die 14 and restraining the flange part 2, by pushing in the core metal punch 13 having a set dimension, the bearing part 3 causes plate thickness movement toward the core metal die 14, but the corner part is not attached to the flange part. The movement of the plate thickness is restricted by the constraint of 2, so that the plate thickness at the corner is thicker than the plate thickness of the bearing part 3, and in the iron-drawing process in the fifth step, as shown in Fig. T. As shown, a semi-finished product supported by a male shaping punch 11 and a pad 12 is inserted into a female shaping die 15.
It is press-fitted to form a tooth profile. The gap between the shaping punch 11 and the die 15 that forms the tooth profile is determined at the tooth bottom A, the tooth tip B, and the tooth surface C, for example, as shown in FIG. When taking the ratio of the gap between the molds, in the first stage, the tooth root A, the tooth tip B, and the tooth surface C are not substantially squeezed, but are simply bent, and in the second and subsequent stages, The tooth bottom A and the tooth tip B are sequentially squeezed to obtain a specified shape and dimensional accuracy, and their thicknesses are reduced accordingly. However, tooth surface C
is subjected to substantial stiffening for the first time in the third stage, and in particular in the fourth stage and onward, the plate thickness is made thinner than the tooth bottom A and the tooth tip B. In order to ensure the precision of the tooth profile shape and the effective length of the tooth profile as long as possible, it is necessary to prevent the reduction in the thickness of each of the corner part r1 of the tooth tip and the curved part R2 of the rim part, and to reduce the bending radius as much as possible. , is the problem of forming the pulley of the present invention.
この課題は、しごきの第１段階から第４段階までに歯底
Ａ１歯先Ｂを第９図に示すようにメス型の整形ダイス１
５の滑り込み部に角度（θ）をもたせて製品の歯形部８
を円周方向に圧縮して板厚減少を防ぎ所定の形状を確保
すること、更にしごきの第３段階以降歯面Ｃを急激にし
ごいて角部ｒ１及び曲部Ｒ２に向つて板厚移動を起させ
ることによつて解決されたものである。又各しごき段階
において金型と半製品との摩擦抵抗を最小限にするため
に金型に表面処理を、半製品には潤滑被膜処理を行つて
おくのが望ましい。なおプーリ−９においては、その軸
受部３に挿入されるベアリングの回り止めのため例えば
図示の如く折曲舌片１０を設ける等適宜加工が施される
。In this task, from the first stage to the fourth stage of ironing, the bottom A1 and the tooth tip B are shaped using a female shaping die 1 as shown in Figure 9.
The tooth profile part 8 of the product is made by giving an angle (θ) to the sliding part 5.
is compressed in the circumferential direction to prevent the plate thickness from decreasing and secure a predetermined shape, and after the third stage of ironing, the tooth surface C is sharply tightened to move the plate thickness toward the corner r1 and the curved part R2. This was solved by raising the issue. Further, in order to minimize the frictional resistance between the mold and the semi-finished product at each ironing stage, it is desirable that the mold be subjected to surface treatment and the semi-finished product treated with a lubricating coating. The pulley 9 is processed as appropriate, such as by providing a bent tongue piece 10 as shown in the figure, to prevent the bearing inserted into the bearing portion 3 from rotating.
このように本発明において一枚の板材の板面を規準面と
して抜き絞りにより中央に円筒部とその周縁にフランジ
部とを形成し、その円筒部を深紋り成形により軸受部と
補強リブとに形成したものであるから軸受部に接続され
るフランジ部の剛性の高い回転部品を得ることができる
と共に、そのフランジ部の外縁を紋り成形によりリム部
としこれにしごき絞り成形により歯形を形成したもので
あるから有効歯長の長い而も精度の高い歯形が形成でき
る等の効果を有する。In this way, in the present invention, a cylindrical part and a flange part are formed at the center by drawing and drawing using the plate surface of a single plate as a reference plane, and the cylindrical part is formed into a bearing part and a reinforcing rib by deep pattern forming. Since the flange part connected to the bearing part is formed into a highly rigid rotating part, the outer edge of the flange part is formed into a rim part by embossed forming, and a tooth profile is formed on this by iron-drawing process. Because of this, it has the advantage of being able to form highly accurate tooth profiles even though the effective tooth length is long.
第１図は第１工程により得られた半製品の断面図、第２
図は第２工程により得られた半製品の断面図、第３図は
第３工程により得られた半製品の断面図、第４図は第４
工程により得られた半製品の断面図、第５図は第５工程
により得られた半製品の断面図、第６図はプーリ一の正
面図、第７図は成形型の半裁断面図、第８図は歯形のし
ごき成形説明線図、第９図は第５工程の説明図である。
２・・・・・・フランジ部、３・・・・・・軸受部、４
−・・・・リブ、５・・・・・・リム、６・・・・・・
貫通孔、８・・・・・・歯形。Figure 1 is a cross-sectional view of the semi-finished product obtained in the first step, and the second
The figure is a cross-sectional view of the semi-finished product obtained in the second step, FIG. 3 is a cross-sectional view of the semi-finished product obtained in the third step, and FIG.
FIG. 5 is a sectional view of the semi-finished product obtained in the fifth step, FIG. 6 is a front view of the pulley, and FIG. 7 is a half-cut sectional view of the mold. FIG. 8 is an explanatory diagram of ironing the tooth shape, and FIG. 9 is an explanatory diagram of the fifth step. 2...Flange part, 3...Bearing part, 4
-・・・Rib, 5...Rim, 6...
Through hole, 8... tooth profile.
Claims (1)
り中央に円筒部を、かつその周縁に環状のフランジ部を
一体に形成する第１工程と、前記円筒部を基準面として
深絞り成形により円筒状の軸受部と環状の補強リブとを
一体に形成する第２工程と前記フランジ部を基準面とし
て絞り成形によりフランジ部外縁にリム部を形成する第
３工程と、前記軸受部の頂壁を打抜き成形により軸受部
に貫通孔を形成する第４工程と、前記リム部の周縁を圧
縮方向にしごき絞り成形し所定の歯形を形成する第５工
程とから成るエンジンのタイミングベルト用歯付プーリ
ーの製造方法。1. A first step of integrally forming a cylindrical part at the center and an annular flange part around its periphery by drawing and drawing using the plate surface of a single plate as a reference plane, and deep drawing forming using the cylindrical part as a reference plane. a second step of integrally forming a cylindrical bearing portion and an annular reinforcing rib; a third step of forming a rim portion on the outer edge of the flange portion by drawing using the flange portion as a reference surface; A toothed belt for an engine timing belt comprising a fourth step of forming a through hole in the bearing part by stamping the wall, and a fifth step of iron-drawing the peripheral edge of the rim part in the compression direction to form a predetermined tooth profile. How to manufacture a pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54055246A JPS5911374B2 (en) | 1979-05-08 | 1979-05-08 | Manufacturing method of toothed pulley for engine timing belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54055246A JPS5911374B2 (en) | 1979-05-08 | 1979-05-08 | Manufacturing method of toothed pulley for engine timing belt |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4873083A Division JPS58193969A (en) | 1983-03-25 | 1983-03-25 | Toothed pulley for use with timing belt of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55147443A JPS55147443A (en) | 1980-11-17 |
| JPS5911374B2 true JPS5911374B2 (en) | 1984-03-15 |
Family
ID=12993231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54055246A Expired JPS5911374B2 (en) | 1979-05-08 | 1979-05-08 | Manufacturing method of toothed pulley for engine timing belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5911374B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313579Y2 (en) * | 1984-03-03 | 1988-04-18 | ||
| JPH0121401Y2 (en) * | 1986-11-01 | 1989-06-26 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5942144A (en) * | 1982-09-03 | 1984-03-08 | Aida Eng Ltd | Timing pulley or gearlike product made of steel sheet and its manufacture |
| JPS61238430A (en) * | 1985-04-15 | 1986-10-23 | Marujiyun Seiki Kogyo Kk | Manufacture of timing belt pulley |
| JPS63126630A (en) * | 1986-11-17 | 1988-05-30 | Matsuo Seisakusho:Kk | Method for fixing bar like part to fitting part of shaft, lever and the like integrally formed utilizing transfer press |
| JPH01218729A (en) * | 1988-02-29 | 1989-08-31 | Sanden Corp | Manufacture of rotor main body for solenoid clutch |
| DE102005006673A1 (en) * | 2004-11-19 | 2006-06-08 | Rempel Stanztechnik Gmbh & Co.Kg | A method for producing a metal part of a plastic-metal composite part and a metal part produced by the method |
-
1979
- 1979-05-08 JP JP54055246A patent/JPS5911374B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313579Y2 (en) * | 1984-03-03 | 1988-04-18 | ||
| JPH0121401Y2 (en) * | 1986-11-01 | 1989-06-26 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55147443A (en) | 1980-11-17 |
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