JPH0641774B2 - Clutch hub inner spline hardening method - Google Patents
Clutch hub inner spline hardening methodInfo
- Publication number
- JPH0641774B2 JPH0641774B2 JP62208980A JP20898087A JPH0641774B2 JP H0641774 B2 JPH0641774 B2 JP H0641774B2 JP 62208980 A JP62208980 A JP 62208980A JP 20898087 A JP20898087 A JP 20898087A JP H0641774 B2 JPH0641774 B2 JP H0641774B2
- Authority
- JP
- Japan
- Prior art keywords
- clutch hub
- inner spline
- plating layer
- layer formed
- spline portion
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 238000007747 plating Methods 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 26
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000001723 curing Methods 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Landscapes
- Mechanical Operated Clutches (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明はクラッチハブの内スプライン硬化方法に関する
もので、詳しくはクラッチハブの内スプライン部のみの
メッキ層を部分加熱硬化させる方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a method for hardening an inner spline of a clutch hub, and more specifically, partially heating and hardening a plating layer of only an inner spline of the clutch hub. It is about the method.
（従来の技術） 従来、クラッチディスクの内スプライン部を硬化させる
方法として以下に示す内スプライン部硬化方法が知られ
ている。(Prior Art) Conventionally, as a method for curing the inner spline portion of the clutch disc, the following inner spline portion curing method is known.
この方法は、窓部及び内スプライン部を有するクラッチ
ハブの窓部の周囲に熱処理を行い、クラッチハブ全体に
無電解ニッケル合金メッキを施してメッキ層を形成した
後、２００〜５００℃の雰囲気中でメッキが施されたク
ラッチハブ全体を加熱してメッキ層を硬化させる方法で
ある。In this method, heat treatment is performed around the window portion of the clutch hub having the window portion and the inner spline portion, and the electroless nickel alloy plating is applied to the entire clutch hub to form a plating layer, and then in an atmosphere of 200 to 500 ° C. In this method, the entire clutch hub plated with is heated to cure the plated layer.
（発明が解決しようとする問題点） ところが、この方法ではメッキが施されたクラッチハブ
全体を加熱しているので、窓部の周囲の熱処理部が再度
加熱されてその硬化が低下する。(Problems to be Solved by the Invention) However, in this method, since the entire plated clutch hub is heated, the heat treatment portion around the window portion is heated again and its hardening is deteriorated.
又、全体加熱の為、クラッチハブの内スプライン部以外
の部分に形成したメッキ層が熱収縮して前記メッキ層に
クラックが発生する恐れがある。その結果、クラッチハ
ブの内スプライン部以外の部分の耐食性が低下する危険
性がある。Further, since the whole is heated, the plating layer formed on the portion other than the inner spline portion of the clutch hub may be thermally shrunk and cracks may be generated in the plating layer. As a result, there is a risk that the corrosion resistance of the portion other than the inner spline portion of the clutch hub may deteriorate.
故に、本発明は窓部の周囲の熱処理部の硬度が低下する
のを防ぐと共にクラッチハブの内スプライン部以外の部
分に形成したメッキ層のクラックの発生を防止し、更に
内スプライン部のメッキ層の硬化を確保することを、そ
の技術的課題とするものである。Therefore, the present invention prevents the hardness of the heat-treated portion around the window portion from decreasing, and also prevents the occurrence of cracks in the plating layer formed in the portion other than the inner spline portion of the clutch hub, and further, the plating layer of the inner spline portion. It is a technical subject to secure the hardening of the.
（問題点を解決するための手段） 前記技術的課題を解決するために講じた技術的手段は、
被駆動軸に係合する内スプライン部及び窓部を有するク
ラッチハブの内スプライン部を硬化させる方法であっ
て、 クラッチハブの窓部の周囲を熱処理して硬化させ、次い
でクラッチハブ全体に触媒ニッケルメッキ法によりニッ
ケル合金メッキ層を形成し、最後に内スプライン部のみ
に形成したニッケル合金メッキ層を高周波加熱により硬
化したことである。(Means for Solving Problems) The technical means taken for solving the technical problems are
A method of curing an inner spline portion of a clutch hub having an inner spline portion and a window portion that engages with a driven shaft, in which the periphery of the clutch hub window portion is heat treated to be cured, and then the entire clutch hub is covered with catalytic nickel. That is, the nickel alloy plating layer was formed by the plating method, and finally the nickel alloy plating layer formed only on the inner spline portion was cured by high frequency heating.
（作用） 前記技術的手段によれば、クラッチハブの内スプライン
部のみに形成したメッキ層を高周波加熱により硬化させ
たので、クラッチハブ全体を加熱させた場合と比較して
窓部周囲の熱処理部の雰囲気温度が低くなり、その結
果、前記熱処理部の硬度の低下が少なくなる。又、クラ
ッチハブの内スプライン部以外の部分に形成されたメッ
キ層の熱収縮が殆どなくなり、前記メッキ層のクラック
の発生を防止できる。更に、内スプライン部に形成した
メッキ層の硬度も確保される。(Function) According to the technical means, the plating layer formed only on the inner spline portion of the clutch hub is hardened by high-frequency heating, so that the heat treatment portion around the window portion is compared with the case where the entire clutch hub is heated. As a result, the ambient temperature becomes low, and as a result, the decrease in hardness of the heat-treated part is reduced. In addition, the heat shrinkage of the plating layer formed on the portion other than the inner spline portion of the clutch hub is almost eliminated, and the generation of cracks in the plating layer can be prevented. Further, the hardness of the plating layer formed on the inner spline portion is secured.
（実施例） 以下図面を用いて実施例について説明する。(Examples) Examples will be described below with reference to the drawings.
第１図は自動車に用いられる摩擦クラッチディスクの要
部断面図で、１はクラッチハブ、２はサブプレート、３
はディスクプレート、４はトーションスプリング、５は
ディスクスプリング、６はフェーシングである。FIG. 1 is a sectional view of a main part of a friction clutch disc used in an automobile. 1 is a clutch hub, 2 is a sub plate, 3
Is a disc plate, 4 is a torsion spring, 5 is a disc spring, and 6 is a facing.
第２図はクラッチハブの平面図である。第２図に示すク
ラッチハブ１は、被駆動軸（図示せず）に係合する内ス
プライン１ａ及び窓部を有し、窓部の周囲（斜線部分）
には焼入れにより熱処理部１ｂが形成されている。FIG. 2 is a plan view of the clutch hub. The clutch hub 1 shown in FIG. 2 has an inner spline 1a that engages with a driven shaft (not shown) and a window portion, and the periphery of the window portion (hatched portion).
A heat treatment part 1b is formed by quenching.
第３図を参照してクラッチハブ１の内スプライン１ｂを
硬化させる方法について説明する。尚、第３図は、高周
波加熱装置の概略図である。A method of hardening the inner spline 1b of the clutch hub 1 will be described with reference to FIG. Incidentally, FIG. 3 is a schematic view of the high-frequency heating device.
クラッチハブ１全体に触媒ニッケルメッキ法によりニッ
ケル合金メッキ層（図示せず）を形成する。最後に、第
３図に示す高周波加熱装置１０により内スプライン１ａ
のみに形成したニッケル合金メッキ層を高周波加熱して
硬化させた。即ち、クラッチハブ１の内スプライン部１
ａ内に第３図の如く高周波コイル１１を配置した状態で
クラッチハブ１を保持回転治具１３により保持した後、
内スプライン部１ａを回転させながら高周波発生装置１
２から高周波を高周波コイル１１に供給することにより
内スプライン１ａのみに形成したニッケル合金メッキ層
を部分加熱して硬化させた。A nickel alloy plating layer (not shown) is formed on the entire clutch hub 1 by a catalytic nickel plating method. Finally, the inner spline 1a is formed by the high frequency heating device 10 shown in FIG.
The nickel alloy plated layer formed only on the surface was heated and cured at a high frequency. That is, the inner spline portion 1 of the clutch hub 1
After the clutch hub 1 is held by the holding / rotating jig 13 with the high-frequency coil 11 arranged in a, as shown in FIG.
High frequency generator 1 while rotating the inner spline portion 1a
By supplying a high frequency from 2 to the high frequency coil 11, the nickel alloy plating layer formed only on the inner spline 1a was partially heated and cured.
ここで、高周波加熱処理後の放置時間に対するクラッチ
ハブ１の窓部及び内スプライン部１ａ以外の部分（以
下、フランジ部と称する）Ａと窓部の周囲の熱処理部Ｂ
（１ｂ）の表面温度変化を第４図に示す。第４図に示す
如く高周波加熱処理後のフランジ部Ａの温度は最高で２
４０℃までしか上昇しないので、熱処理部Ｂの硬度の低
下は少なくなる。Here, a portion (hereinafter, referred to as a flange portion) A other than the window portion and the inner spline portion 1a of the clutch hub 1 with respect to a standing time after the high frequency heat treatment and a heat treatment portion B around the window portion.
The surface temperature change of (1b) is shown in FIG. As shown in FIG. 4, the temperature of the flange portion A after the high frequency heat treatment is 2 at maximum.
Since the temperature rises only up to 40 ° C., the decrease in hardness of the heat treated portion B is reduced.
又、本実施例（部分加熱）及び従来技術（全体加熱）に
おける加熱前後での熱処理部Ｂの硬度測定結果を第１表
に示す。Table 1 shows the results of measuring the hardness of the heat-treated part B before and after heating in this example (partial heating) and the prior art (whole heating).
以上示したように、本実施例では、クラッチハブ１の内
スプライン部１ａのみに形成したメッキ層を部分加熱硬
化させたので、クラッチハブ１全体を加熱させた場合と
比較して窓部周囲の熱処理部Ｂの雰囲気温度が低くな
り、その結果、熱処理部Ｂの硬度の低下が少なくなる。 As described above, in the present embodiment, the plating layer formed only on the inner spline portion 1a of the clutch hub 1 is partially heat-cured, so that the surrounding portion of the window portion is compared with the case where the entire clutch hub 1 is heated. The ambient temperature of the heat-treated portion B becomes low, and as a result, the decrease in hardness of the heat-treated portion B is reduced.
又、内スプライン部１ａのみに形成したメッキ層を加熱
硬化させたので、クラッチハブ１の内スプライン部１ａ
以外の部分に形成されたメッキ層の熱収縮が殆どなくな
り、前記メッキ層のクラックの発生を防止できる。Further, since the plating layer formed only on the inner spline portion 1a is cured by heating, the inner spline portion 1a of the clutch hub 1 is
The heat shrinkage of the plating layer formed in the other portions is almost eliminated, and the generation of cracks in the plating layer can be prevented.
又、内スプライン部１ａのみに形成したメッキ層を加熱
硬化させたので、従来技術と比較して低エネルギーでメ
ッキ層を硬化することが可能になり、更に高周波加熱に
よる部分加熱により短時間（５〜６０秒）で加熱処理が
できる。Further, since the plating layer formed only on the inner spline portion 1a is heat-cured, it is possible to cure the plating layer with lower energy as compared with the conventional technique, and further, the partial heating by the high-frequency heating can shorten the time (5 The heat treatment can be performed in about 60 seconds.
本発明は以下の如く効果を有する。 The present invention has the following effects.
クラッチハブの内スプライン部のみに形成したメッキ層
を高周波加熱により硬化させたので、クラッチハブ全体
を加熱させた場合と比較して窓部周囲の熱処理部の硬度
の低下が少なくなる。又、クラッチハブの内スプライン
部以外の部分に形成されたメッキ層のクラックの発生を
防止できる。更に、内スプライン部に形成したメッキ層
の硬度も確保できる。Since the plating layer formed only on the inner spline portion of the clutch hub is hardened by high-frequency heating, the hardness of the heat-treated portion around the window portion is less reduced as compared with the case where the entire clutch hub is heated. Further, it is possible to prevent cracks from being generated in the plating layer formed on a portion other than the inner spline portion of the clutch hub. Further, the hardness of the plating layer formed on the inner spline portion can be secured.
第１図は自動車に用いられる摩擦クラッチディスクの要
部断面図、第２図は本実施例に係るクラッチハブの平面
図、第３図は本実施例に係る高周波加熱装置の概略図、
第４図はクラッチハブ１の窓部，内スプライン部以外の
部分及び窓部周囲の熱処理部の表面温度変化と高周波加
熱処理後の放置時間との関係を示すグラフである。 １……クラッチハブ １ａ……内スプライン部 １ｂ……熱処理部 ６……フェーシング １０……高周波加熱装置FIG. 1 is a sectional view of a main part of a friction clutch disc used in an automobile, FIG. 2 is a plan view of a clutch hub according to this embodiment, and FIG. 3 is a schematic view of a high-frequency heating device according to this embodiment.
FIG. 4 is a graph showing the relationship between changes in the surface temperature of the window portion of the clutch hub 1, portions other than the inner spline portion, and the heat treatment portion around the window portion, and the standing time after the high frequency heat treatment. 1 ... Clutch hub 1a ... Inner spline part 1b ... Heat treatment part 6 ... Facing 10 ... High frequency heating device
Claims (1)
部を有するクラッチハブの内スプライン部を硬化させる
方法であって、 前記クラッチハブの窓部の周囲を熱処理して硬化させ、
次いで前記クラッチハブ全体に触媒ニッケルメッキ法に
よりニッケル合金メッキ層を形成し、最後に前記内スプ
ライン部のみに形成したニッケル合金メッキ層を高周波
加熱により硬化したことを特徴とする摩擦クラッチデイ
スク用クラッチハブの内スプライン硬化方法。1. A method of curing an inner spline portion of a clutch hub having an inner spline portion and a window portion that engages with a driven shaft, wherein the periphery of the window portion of the clutch hub is heat treated and cured.
Next, a nickel alloy plating layer is formed on the entire clutch hub by a catalytic nickel plating method, and finally the nickel alloy plating layer formed only on the inner spline portion is hardened by high-frequency heating. In-line spline curing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208980A JPH0641774B2 (en) | 1987-08-22 | 1987-08-22 | Clutch hub inner spline hardening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208980A JPH0641774B2 (en) | 1987-08-22 | 1987-08-22 | Clutch hub inner spline hardening method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6455430A JPS6455430A (en) | 1989-03-02 |
| JPH0641774B2 true JPH0641774B2 (en) | 1994-06-01 |
Family
ID=16565343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62208980A Expired - Fee Related JPH0641774B2 (en) | 1987-08-22 | 1987-08-22 | Clutch hub inner spline hardening method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641774B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025075058A1 (en) | 2023-10-03 | 2025-04-10 | 有限会社高島産業 | Lutein-rich egg, zeaxanthin-rich egg, processed food material, method for producing egg, and feed for egg-laying hens |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5482550A (en) * | 1977-12-13 | 1979-06-30 | Aisin Seiki Co Ltd | Friction clutch disc hub |
| JPS58184305A (en) * | 1982-04-20 | 1983-10-27 | マツダ株式会社 | Method of combining spline body |
-
1987
- 1987-08-22 JP JP62208980A patent/JPH0641774B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6455430A (en) | 1989-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |