JPH02197341A - Manufacture of drive plate - Google Patents
Manufacture of drive plateInfo
- Publication number
- JPH02197341A JPH02197341A JP1550089A JP1550089A JPH02197341A JP H02197341 A JPH02197341 A JP H02197341A JP 1550089 A JP1550089 A JP 1550089A JP 1550089 A JP1550089 A JP 1550089A JP H02197341 A JPH02197341 A JP H02197341A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- thickness
- thin steel
- thick
- teeth
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 abstract description 7
- 238000010791 quenching Methods 0.000 abstract description 3
- 230000000171 quenching effect Effects 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 11
- 230000008602 contraction Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は薄鋼板をプレス成形して薄くて大径の歯車を製
造する方法に関するもので、自動車のトルクコンバータ
に使用されるドライブプレートの製造方法として利用さ
れるものである。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a method for manufacturing a thin, large-diameter gear by press-forming a thin steel plate, which is used in an automobile torque converter. This method is used as a manufacturing method for drive plates.
（従来の技術）
本発明に係る従来技術としては特開昭６３−６００３７
号の公報がある。(Prior art) As a prior art related to the present invention, Japanese Patent Application Laid-Open No. 63-60037
There is a public notice of issue.
これは、周辺部が厚肉で中央部が薄肉な大径歯車の製造
方法に於いて、薄鋼板を打ち抜き、カップ状とし外周面
げを行ってカップ状の側壁部を折り曲げて外周を肉厚化
し、前記厚肉部分に歯車転造装置により歯部を成形し、
熱処理工程により歯部に焼入による熱処理を行うもので
、薄肉で大径歯車よりなる自動車用のドライブプレート
を製造する方法である。This is a manufacturing method for large-diameter gears that have thick walls on the periphery and thin walls in the center.This method involves punching out a thin steel plate, making it into a cup shape, bevelling the outer periphery, and bending the cup-shaped side walls to make the outer periphery thicker. forming a tooth part on the thick part using a gear rolling machine,
In the heat treatment process, the teeth are heat treated by quenching, and this is a method for manufacturing drive plates for automobiles made of thin, large-diameter gears.
（発明が解決しようとする課題）
然し前記ドライブプレートの製造方法は第１２図に示す
ように、ドライブプレートの外周部は薄鋼板の外周を４
重に折り曲げて厚肉化後歯形を成形し、歯形部を熱処理
するために、歯形部に変形が生じ易い。(Problem to be Solved by the Invention) However, as shown in FIG. 12, the method for manufacturing the drive plate is such that the outer periphery of the drive plate is
Since the tooth profile is formed by heavy bending and thickened, and the tooth profile is heat treated, the tooth profile is likely to be deformed.
第１３図はドライブプレートの歯形部の拡大図で板厚ｔ
Ｉｌ１１１の薄鋼板より形成された４重に折り曲げられ
た歯形部２１はドライブプレートのプレート部２２によ
り熱処理に引張り応力が作用し歯形部の中央がＢに示す
ように開くと共に、歯形部上部の歯底がＡに示すように
ズレが発生し段差形状となり歯形不良が発生する。Figure 13 is an enlarged view of the tooth profile of the drive plate, and the plate thickness is t.
The quadruple-bent tooth profile 21 formed from a thin steel plate of Il111 is subjected to tensile stress during heat treatment by the plate part 22 of the drive plate, and the center of the tooth profile opens as shown in B, and the teeth at the top of the tooth profile open. As shown in A at the bottom, misalignment occurs, resulting in a stepped shape and a tooth profile defect.
この歯形不良の発生の原因は、−点鎖線で示す熱処理拘
束治具２３．２４にて歯部２１を上下に拘束し、歯部の
外径側より高周波加熱後冷却液をかけて焼入れを行うも
ので、局所的な熱処理であるために、加熱冷却に伴う熱
膨張収縮が各部でおこり、その差が生じるものである。The cause of this defective tooth profile is that the tooth portion 21 is restrained vertically with heat treatment restraint jigs 23 and 24 shown by dashed-dotted lines, and a cooling liquid is applied to the tooth portion from the outer diameter side of the tooth portion after high-frequency heating to harden the tooth portion. Since the heat treatment is localized, thermal expansion and contraction occur in each part due to heating and cooling, resulting in differences.
すなわち、前記変形Ａは加熱時に熱膨張の小さい薄鋼板
との接続している側と熱膨張の大きいそれ以外の部分で
膨張差が生じて境界部にずれＡが生じ、又変形Ｂは冷却
時に、歯部の薄鋼板との接続側とその反対側（下側）に
伸縮量差が生じ、歯先の合わせ部を境に下向きの曲げが
生じその結果歯先に開きＢが生じるものである。In other words, the deformation A is caused by a difference in expansion between the side where the thin steel plate is connected to the thin steel plate, which has a small thermal expansion, and the other part, which has a large thermal expansion, and a deviation A occurs at the boundary, and the deformation B is caused by the difference in expansion when the sheet is cooled. , there is a difference in the amount of expansion and contraction between the side where the tooth part connects to the thin steel plate and the opposite side (lower side), and a downward bend occurs at the joining part of the tooth tip, resulting in an opening B at the tooth tip. .
本発明は薄鋼板の外周を４重に折り曲げて、歯形を形成
し、熱処理を行ったドライブプレートを製造する方法に
於いて、前記熱処理を行っても、歯形部上部の歯底のず
れの発生がなく、かつ歯先に変形した開きの発生しない
ドライブプレートの製造方法を技術的課題とするもので
ある。The present invention provides a method for manufacturing a drive plate in which the outer periphery of a thin steel plate is folded four times to form a tooth profile and then heat treated. The technical problem is to provide a method for manufacturing a drive plate that is free from cracks and deformed openings at the tips of the teeth.
（課題を解決するための手段）
前記課題を解決するために講じた技術的手段は次のよう
である。すなわち、
外周部が厚肉で中央部が薄肉の大径歯車であるドライブ
プレートを薄板鋼板より製造する方法に於いて、
（１）円板の外周を折り曲げてカップ状とし、カップ状
の側壁を折り曲げて４重の厚肉部とし、（２）ｉｌ板鋼
板の中央部と歯形を形成する前記厚肉部に接続する部分
のネックの長さである段差寸法を前記薄板鋼板の板厚の
２倍以上の寸法に形成し、
（３）前記厚肉部分に歯車転造装置により歯形部を塑性
成形し、熱処理を行ってドライブプレートを製造するも
のである。(Means for solving the problem) The technical means taken to solve the above problem are as follows. That is, in the method of manufacturing a drive plate, which is a large diameter gear with a thick outer circumference and a thin center part, from a thin steel plate, (1) the outer circumference of the disk is bent to form a cup shape, and the cup-shaped side walls are (2) The length of the step, which is the length of the neck of the part that connects to the thick part forming a tooth profile with the central part of the IL steel plate, is 2 times the thickness of the thin steel plate. (3) A tooth profile is plastically formed on the thick portion using a gear rolling machine, and heat treatment is performed to manufacture a drive plate.
（作用）
前記ドライブプレートの中央板部と歯形を形成する厚肉
部に接続するネックの長さを薄板鋼板の板厚の２倍以上
にすることにより、熱処理時の熱膨張収縮で、歯部の薄
鋼板接続側（上側）とその反対側（下側）に膨張伸縮差
が生じて起こる歯部の変形（歯底のずれＡ）、歯先の開
きＢ）が、薄鋼板との接続部に軸方向のネック部により
歯部上・下の膨張収縮差が押さえられ、歯部の変形が大
幅に低減されるものである。(Function) By making the length of the neck connecting the central plate part of the drive plate and the thick part forming the tooth profile at least twice the thickness of the thin steel plate, the tooth part is expanded and contracted during heat treatment. The deformation of the teeth caused by the difference in expansion and contraction between the thin steel plate connection side (upper side) and the opposite side (lower side) (deviation of the tooth bottom A), opening of the tooth tip B) is the connection part with the thin steel plate. In addition, the axial neck portion suppresses the difference in expansion and contraction between the upper and lower portions of the teeth, thereby significantly reducing deformation of the teeth.
（実施例） 以下実施例について説明する。(Example) Examples will be described below.
実施例１゜
第１図に示すように厚さｔｍｍの円板薄鋼板１をプレス
絞り加工によりカップ状カン２を形成する、３はカップ
状カンの周壁部を示す。Embodiment 1 As shown in FIG. 1, a cup-shaped can 2 is formed by press-drawing a circular thin steel plate 1 having a thickness of t mm. Reference numeral 3 indicates the peripheral wall of the cup-shaped can.
第２図に示すように薄鋼板の中央部１ａと周壁部３の厚
肉部との継ぎ部（ネック基部）４を２重１以上とって２
重の厚さ５に成形する。As shown in Fig. 2, the joint part (neck base) 4 between the central part 1a of the thin steel plate and the thick part of the peripheral wall part 3 is doubled by one or more.
Shape to a thickness of 5cm.
次にマンドレル、拘束リング及びパンチ、ダイス等の押
圧により第３図に示すように座りツ曲げを行い２重に肉
厚化し、トータルとしてカップ状カン周壁部を６に示す
４重の厚さに形成し転造用ブランク７とするものである
。Next, by pressing with a mandrel, a restraining ring, a punch, a die, etc., the seated part is bent as shown in Figure 3, and the wall is doubled, so that the total thickness of the cup-shaped can peripheral wall is fourfold as shown in Figure 6. This is to form a blank 7 for rolling.
次に転造用ブランク７の４重肉厚部６に歯車転造により
歯形８を成形するこれを第４図に示す。Next, a tooth profile 8 is formed on the quadruple thick portion 6 of the rolling blank 7 by gear rolling, as shown in FIG.
次に第５図に示すように歯部の強度、耐摩耗性を向上す
るために歯部のみ熱処理を行うもので、歯部８を熱処理
拘束治具アッパー９ａと同ロアー９ｂにより拘束保持し
、高周波焼入装置１０の加熱コイルにて歯部８のみ所定
温度に加熱し、その直後冷却液をかけ急冷し焼入れを行
い大径歯車を製造するものである。Next, as shown in FIG. 5, in order to improve the strength and wear resistance of the tooth part, only the tooth part is heat treated, and the tooth part 8 is restrained and held by the heat treatment restraining jig upper 9a and lower 9b. Only the tooth portion 8 is heated to a predetermined temperature by the heating coil of the induction hardening device 10, and immediately after that, a cooling liquid is applied to the tooth portion to rapidly cool and harden the tooth portion to manufacture a large-diameter gear.
実施例２゜
第６図に示すよう製品設計上薄鋼板部１１と歯部１２の
継ぎ長さくネック長）が薄鋼板厚さｔｍｍの２倍以下と
なる場合は、薄鋼板の反対側に持って行き、ネック長Ｈ
を２ｔＩｌｌ１１１以上の形状とするものである。Embodiment 2 As shown in Fig. 6, if the joint length (neck length) between the thin steel plate part 11 and the tooth part 12 is less than twice the thin steel plate thickness tmm due to product design, it is necessary to hold it on the opposite side of the thin steel plate. Go, neck length H
has a shape of 2tIll111 or more.
第６図に示すように円板薄板素材をプレス絞り加工によ
りハツト状１２に絞り成形する。この時絞り深さ１３が
本発明の特徴であるネック長さが薄鋼板厚いｔｍｍの２
倍以上とする。As shown in FIG. 6, a thin disc material is drawn into a hat shape 12 by press drawing. At this time, the drawing depth is 13, which is a feature of the present invention.
More than twice as much.
次にハツト状に絞ったブランクを第７図に示すようにカ
ップ状１４に絞り成形し、第８図に示すように側壁部を
１５に示すように形成し、更に周壁部を座りツ曲げを行
い、第９図に示すように４重の肉厚部１６を有する転造
用ブランク１７を形成する。Next, the blank drawn into a hat shape is drawn into a cup shape 14 as shown in FIG. 7, the side wall portion is formed as shown in 15 as shown in FIG. As shown in FIG. 9, a rolling blank 17 having four thick portions 16 is formed.
次に実施例１と同様に第１０図に示すように歯部の形成
及び焼入を行って大径歯車１８を形成するものである。Next, as in Example 1, as shown in FIG. 10, teeth are formed and hardened to form a large diameter gear 18.
第１１図の（イ）１９ａ及び（Ｉ：り１９ｂは実施例１
及び２の熱処理による収縮及び膨張の状況を示すもので
、点線は収縮、−点鎖線は膨張を示し収縮及び膨張によ
る歯底のズレ及び歯先の開きの発生はまった（ないもの
である。(A) 19a and (I: 19b) in FIG. 11 are Example 1
and 2 show the state of contraction and expansion due to the heat treatment, where the dotted line indicates contraction and the dashed-dotted line indicates expansion, and the occurrence of tooth bottom displacement and tooth tip opening due to contraction and expansion was (none).
第１４図は本実施例１の場合の歯底のズレ量Ａとネック
長さＨとの関係図を示すもので、Ｈが大きくなる程ズレ
量Ａは減少する。FIG. 14 shows a relationship diagram between the amount of deviation A of the tooth bottom and the neck length H in the case of the first embodiment, and as H becomes larger, the amount of deviation A decreases.
又第１５図は歯先の開き長さＢとネック長さＨの関係図
を示すもので、Ｈが大きくなる程歯先の開きは小さくな
る。Furthermore, FIG. 15 shows a relationship diagram between the opening length B of the tooth tip and the neck length H, and the larger H becomes, the smaller the opening of the tooth tip becomes.
本発明は次の効果を有する。 The present invention has the following effects.
歯車精度が向上し、精度不良が大幅に改善され歯車精度
向上により、相手部品との当たりが改良た説明図で、第
１図はカップ状カン、第２図は２重曲げ、第３図は４重
曲げ、第４図は歯部形成、第５図は焼入の各工程の説明
図、
第６図から第１０図は第２実施例の一部を省略した説明
図で、第６図はハツト状、第７図はカップ状カン、第８
図は２重曲げ、第９図は４重曲げ、第１０図は歯部形成
を示し、第１１図は収縮、膨張時の説明図で、（イ）は
第１実施例、（ロ）は第２実施例である。The gear precision has been improved and precision defects have been significantly improved.The gear precision has been improved and the contact with the mating parts has been improved.Figure 1 is a cup-shaped ring, Figure 2 is a double bend, Figure 3 is a double bend. Fig. 4 is an explanatory diagram of each process of quadruple bending, tooth formation, Fig. 5 is quenching, and Figs. 6 to 10 are explanatory diagrams with parts of the second embodiment omitted; Figure 7 is cup-shaped, Figure 8 is hat-shaped, Figure 8 is cup-shaped,
The figure shows double bending, Fig. 9 shows quadruple bending, Fig. 10 shows tooth formation, and Fig. 11 shows illustrations of contraction and expansion. (a) is the first embodiment, (b) is This is a second example.
第１２図は従来例の一部省略した断面図、第１３図は従
来例の要部の不良発生時の説明図、第１４図及び第１５
図は第１実施例の場合のネックの長さＨと歯底のズレＡ
及び歯先の開きＢとの関係を示す図である。Fig. 12 is a partially omitted sectional view of the conventional example, Fig. 13 is an explanatory diagram of the main part of the conventional example when a failure occurs, and Figs. 14 and 15.
The figure shows neck length H and tooth root deviation A in the case of the first embodiment.
It is a figure which shows the relationship with the opening B of a tooth tip.
１．１１・・・薄板鋼板。1.11...Thin steel plate.
２．１４・・・カップ状カン。2.14...Cup-shaped can.
４．１３・・・ネックの長さ ６．１６・・・４重の厚肉部。4.13...Neck length 6.16... Quadruple thick wall part.
Claims (1)
プレートを薄板鋼板より製造する方法に於いて、 （１）円板の外周を折り曲げてカップ状とし、カップ状
の側壁を折り曲げて４重の厚肉部とし、（２）薄板鋼板
の中央部と歯形を形成する前記厚肉部に接続する部分の
ネックの長さを前記薄板鋼板の板厚の２倍以上の寸法に
形成し、 （３）前記厚肉部に歯車転造装置により歯形部を塑性成
形し、熱処理を行うドライブプレートの製造方法。[Claims] In a method for manufacturing a drive plate, which is a large-diameter gear with a thick outer circumference and a thin center part, from a thin steel plate, (1) the outer circumference of a disk is bent to form a cup shape; (2) The length of the neck of the part connecting to the thick part forming a tooth shape with the central part of the thin steel plate is twice the thickness of the thin steel plate. (3) A method for manufacturing a drive plate, in which the thick portion is formed to have the above dimensions, and (3) a tooth profile portion is plastically formed on the thick portion using a gear rolling device, and then heat treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1550089A JP2646726B2 (en) | 1989-01-25 | 1989-01-25 | Drive plate manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1550089A JP2646726B2 (en) | 1989-01-25 | 1989-01-25 | Drive plate manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02197341A true JPH02197341A (en) | 1990-08-03 |
| JP2646726B2 JP2646726B2 (en) | 1997-08-27 |
Family
ID=11890531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1550089A Expired - Lifetime JP2646726B2 (en) | 1989-01-25 | 1989-01-25 | Drive plate manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2646726B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5463891A (en) * | 1994-04-11 | 1995-11-07 | Kabushiki Kaisha Hasegawa Seiko | Method for producing ratchet devices |
| JPWO2016117364A1 (en) * | 2015-01-19 | 2017-09-28 | 新日鐵住金株式会社 | Manufacturing method of machine parts and machine parts |
-
1989
- 1989-01-25 JP JP1550089A patent/JP2646726B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5463891A (en) * | 1994-04-11 | 1995-11-07 | Kabushiki Kaisha Hasegawa Seiko | Method for producing ratchet devices |
| JPWO2016117364A1 (en) * | 2015-01-19 | 2017-09-28 | 新日鐵住金株式会社 | Manufacturing method of machine parts and machine parts |
| US10675673B2 (en) | 2015-01-19 | 2020-06-09 | Nippon Steel Corporation | Method of manufacturing mechanical part and mechanical part |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2646726B2 (en) | 1997-08-27 |
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