JP2646726B2 - Drive plate manufacturing method - Google Patents
Drive plate manufacturing methodInfo
- Publication number
- JP2646726B2 JP2646726B2 JP1550089A JP1550089A JP2646726B2 JP 2646726 B2 JP2646726 B2 JP 2646726B2 JP 1550089 A JP1550089 A JP 1550089A JP 1550089 A JP1550089 A JP 1550089A JP 2646726 B2 JP2646726 B2 JP 2646726B2
- Authority
- JP
- Japan
- Prior art keywords
- tooth
- thin steel
- steel plate
- drive plate
- thick
- 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
- Heat Treatment Of Articles (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
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。Description: Object of the Invention (Industrial application field) The present invention relates to a method of manufacturing a thin and large-diameter gear by press-forming a thin steel plate, and is used for a torque converter of an automobile. It is used as a method for manufacturing a drive plate.
(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 relating to the present invention, there is JP-A-63-60037.
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、カツプ状とし外周
曲げを行つてカツ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 method of manufacturing a large-diameter gear in which the peripheral portion is thick and the central portion is thin. Forming a tooth portion on the thick portion by a gear rolling device and subjecting the tooth portion to a heat treatment by quenching in a heat treatment step. .
(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。(Problems to be Solved by the Invention) However, in the method of manufacturing the drive plate, as shown in FIG.
The tooth profile is deformed easily because it is heavily bent to form a tooth profile after thickening and heat treatment of the tooth profile.
第13図はドライブプレートの歯形部の拡大図で板厚tm
mの薄鋼板より形成された4重に折り曲げられた歯形部2
1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。Fig. 13 is an enlarged view of the tooth profile of the drive plate,
4-fold bent tooth profile formed from thin steel plate of m
In the case of 1, the tensile stress is applied to the heat treatment by the plate portion 22 of the drive plate, and the center of the tooth portion is opened as shown in B, and the tooth bottom in the upper portion of the tooth portion is displaced as shown in A, resulting in a stepped shape and a defective tooth shape. Occurs.
この歯形不良の発生の原因は、一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。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。The cause of this tooth shape defect is that the teeth 21 are restrained up and down by heat treatment restraining jigs 23 and 24 indicated by dashed lines, and quenching is performed by applying high frequency heating and cooling liquid from the outer diameter side of the teeth. Because of the local heat treatment, thermal expansion and contraction due to heating and cooling occur in each part, and a difference is generated. That is, the deformation A has a difference in expansion between the side connected to the thin steel plate having a small thermal expansion at the time of heating and the other portion having a large thermal expansion at the time of heating, resulting in a displacement A at the boundary portion, and the deformation B at the time of cooling. A difference in the amount of expansion and contraction occurs between the side of the tooth portion connected to the thin steel sheet and the opposite side (lower side), and downward bending occurs at the joint of the tooth tip, resulting in the 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、熱処理を行つたドライブプレートを製造する方法
に於いて、前記熱処理を行つても、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 relates to a method of manufacturing a drive plate in which the outer periphery of a thin steel plate is bent four times to form a tooth profile and heat-treated. It is a technical object of the present invention to provide a method for manufacturing a drive plate that does not have an opening and does not have a deformed tooth tip.
(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ツプ状とし、カツプ状
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
接続する部分のネツ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、熱処理を行つ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 problem are as follows. That is, in a method of manufacturing a drive plate made of a thin steel plate having a large-diameter gear whose outer peripheral portion is thick and whose central portion is thin, (1) the outer periphery of the disk is bent into a cup shape, and the cup-shaped side wall is formed. (2) The step size, which is the length of the neck connected to the thick portion forming the tooth shape with the center of the thin steel plate, is twice the thickness of the thin steel plate. (3) The drive section is manufactured by plastically forming a tooth profile portion on the thick portion with a gear rolling device and performing heat treatment.
(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
肉部に接続するネツ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ツク部によ
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。(Action) By making the length of the neck connected to the central plate portion of the drive plate and the thick portion forming the tooth profile twice or more the thickness of the thin steel plate, the thermal expansion and contraction during heat treatment causes The deformation of the tooth part caused by the difference in expansion and contraction between the connection side (upper side) and the opposite side (lower side) of the thin steel sheet (tooth bottom shift A) and the tooth tip opening B) are caused by the connection with the thin steel sheet. The difference in expansion and contraction between the upper and lower portions of the teeth is suppressed by the axial net portion, and the deformation of the teeth is greatly reduced.
(実施例) 以下実施例について説明する。Example An example 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
絞り加工によりカツプ状カン2を形成する、3はカツプ
状カンの周壁部を示す。Example 1 As shown in FIG. 1, a cup-shaped can 2 is formed by press-drawing a thin disk-shaped steel sheet 1 having a thickness of tmm, and reference numeral 3 denotes a peripheral wall portion 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(ネツク基部)4を2tmm以上とつて2重
の厚さ5に成形する。As shown in FIG. 2, the joint (net base) 4 between the central portion 1a of the thin steel plate and the thick portion of the peripheral wall portion 3 is formed to a double thickness 5 with a length of 2 tmm or more.
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図に示すように座クツ曲げを行い2重に
肉厚化し、トータルとしてカツプ状カン周壁部を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 the mandrel, the constraining ring, the punch, the die, etc., the seat is bent as shown in FIG. 3 to double the thickness, and the cup-shaped can peripheral wall portion is totally quadrupled as shown in FIG. It is formed into a rolling blank 7.
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
理拘束治具アツパー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 teeth, only the teeth are heat-treated. The teeth 8 are restrained and held by the heat treatment restraining jig upper 9a and the 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 thereafter, a cooling liquid is applied, rapidly cooled, and quenched 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(ネツク長)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つて行き、ネツク長Hを2t
mm以上の形状とするものである。Embodiment 2. As shown in FIG. 6, when the joint length (net length) of the thin steel plate portion 11 and the tooth portion 12 is less than twice the thickness tmm of the thin steel plate due to the product design, the opposite side of the thin steel plate is used. Take the net length H 2t
mm 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ツ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 disk material is drawn into a hat-like shape 12 by press drawing. At this time, the drawing depth 13 is set so that the neck length, which is a feature of the present invention, is at least twice the thickness tmm of a thin steel plate.
次にハツト状に絞つたブランクを第7図に示すように
カツプ状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、更に周壁部を座クツ曲げを行
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 squeezed into a hat shape is drawn into a cup shape 14 as shown in FIG. 7, and the side wall portion is formed as shown in FIG.
Then, the peripheral wall portion is subjected to countersunk bending to form a rolling blank 17 having a quadruple thick portion 16 as shown in FIG.
次に実施例1と同様に第10図に示すように歯部の形成
及び焼入を行つて大径歯車18を形成するものである。Next, as shown in FIG. 10, a large-diameter gear 18 is formed by forming and quenching teeth as in the first embodiment.
第11図の(イ)19a及び(ロ)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、一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つたくないものである。(A) 19a and (b) 19b in FIG. 11 show the state of contraction and expansion due to the heat treatment in Examples 1 and 2, and the dotted line indicates contraction, and the dashed line indicates expansion, and the tooth root shift due to contraction and expansion. And the occurrence of opening of the tooth tip is something that one does not want to wait for.
第14図は本実施例1の場合の歯底のズレ量Aとネツク
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 is a diagram showing the relationship between the tooth root shift amount A and the net length H in the case of the first embodiment. As H increases, the shift amount A decreases.
又第15図は歯先の開き長さBとネツク長さ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。FIG. 15 is a diagram showing the relationship between the opening length B of the tooth tip and the neck length H. As H becomes larger, the opening of the tooth tip becomes smaller.
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されて、耐摩
耗性が向上する。The precision of the gear is improved, the precision defect is greatly improved, and the improvement in the precision of the gear improves the contact with the mating part, thereby improving the wear resistance.
第1図から第5図は第1実施例の一部を省略した説明図
で、第1図はカツプ状カン、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図はカツプ状カン、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。 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
実施例の場合のネツクの長さ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。 1,11……薄板鋼板, 2,14……カツプ状カン, 4,13……ネツクの長さ, 6,16……4重の厚肉部。1 to 5 are explanatory views in which part of the first embodiment is omitted. FIG. 1 is a cup-shaped can, FIG. 2 is double bending, FIG. 3 is quadruple bending, and FIG. FIG. 5 is an explanatory view of each step of quenching, FIGS. 6 to 10 are explanatory views in which a part of the second embodiment is omitted, FIG. 6 is a hat shape, and FIG. FIG. 8 shows double bending, FIG. 9 shows quadruple bending, FIG. 10 shows tooth formation, FIG. 11 is an explanatory view of contraction and expansion, and FIG. An example (b) is a second embodiment. FIG. 12 is a cross-sectional view of the conventional example with a part omitted, FIG. 13 is an explanatory diagram of a main part of the conventional example when a failure occurs, and FIGS.
It is a figure which shows the relationship between the length H of the net, the gap A of a tooth bottom, and the opening B of a tooth tip in the case of an Example. 1,11: Thin steel plate, 2,14: Cup-shaped can, 4,13: Neck length, 6,16: Four thick parts.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 実 愛知県刈谷市朝日町2丁目1番地 アイ シン精機株式会社内 (72)発明者 坂部 裕司 愛知県刈谷市野田町場割11番地 アイシ ン豊容株式会社内 審査官 加藤 友也 (56)参考文献 特開 昭62−84846(JP,A) 特開 昭62−270234(JP,A) 特開 昭63−286232(JP,A) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Minoru Takahashi 2-1-1 Asahi-cho, Kariya-shi, Aichi Prefecture Inside Aisin Seiki Co., Ltd. (72) Inventor Yuji Sakabe 11, Nodamachibawari, Kariya-shi, Aichi Prefecture Aisin Yutaka Examiner in Yoko Co., Ltd. Tomoya Kato (56) References JP-A-62-84846 (JP, A) JP-A-62-270234 (JP, A) JP-A-63-286232 (JP, A)
Claims (1)
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ツプ状とし、カツプ状
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
接続する部分のネツ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。1. A method of manufacturing a drive plate made of a thin steel plate having a large-diameter gear whose outer peripheral portion is thick and whose central portion is thin, comprising: (1) bending the outer periphery of a disk into a cup-like shape; The side wall of the thin steel plate is bent to form a quadruple thick portion. (2) The length of the neck connected to the central portion of the thin steel plate and the thick portion forming the tooth shape is set to 2 times the thickness of the thin steel plate.
(3) A method of manufacturing a drive plate in which a tooth profile is plastically formed on the thick portion by a gear rolling device and 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 JPH02197341A (en) | 1990-08-03 |
JP2646726B2 true 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) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2120958A1 (en) * | 1994-04-11 | 1995-10-12 | Isao Hasegawa | Method for producing ratchet devices |
RU2676361C1 (en) | 2015-01-19 | 2018-12-28 | Ниппон Стил Энд Сумитомо Метал Корпорейшн | Method of manufacturing mechanical part and mechanical part |
-
1989
- 1989-01-25 JP JP1550089A patent/JP2646726B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02197341A (en) | 1990-08-03 |
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