JPH0741366B2 - Constant velocity universal joint outer ring manufacturing method - Google Patents
Constant velocity universal joint outer ring manufacturing methodInfo
- Publication number
- JPH0741366B2 JPH0741366B2 JP12378385A JP12378385A JPH0741366B2 JP H0741366 B2 JPH0741366 B2 JP H0741366B2 JP 12378385 A JP12378385 A JP 12378385A JP 12378385 A JP12378385 A JP 12378385A JP H0741366 B2 JPH0741366 B2 JP H0741366B2
- Authority
- JP
- Japan
- Prior art keywords
- constant velocity
- outer ring
- velocity universal
- universal joint
- cylindrical 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000463 material Substances 0.000 claims description 33
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 15
- 239000010962 carbon steel Substances 0.000 claims description 13
- 238000005242 forging Methods 0.000 claims description 12
- 238000010409 ironing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000012467 final product Substances 0.000 description 17
- 238000005096 rolling process Methods 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000000047 product Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010273 cold forging Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 102200094897 rs121913558 Human genes 0.000 description 2
- 102220079368 rs763294619 Human genes 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、自動車の駆動車軸等に利用される等速自在
継手、特に、駆動側と従動側の等速性を維持しつつ両者
の角度変位や軸方向の相対変位を許容し得るようになし
た等速自在継手外輪の製造方法に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant velocity universal joint used for a drive axle of an automobile, in particular, an angular displacement between the drive side and the driven side while maintaining constant velocity. The present invention relates to a method for manufacturing an outer ring for a constant velocity universal joint which allows relative displacement in the axial direction.
従来の技術 上記型式の等速自在継手の外輪は、例えば第４図及び第
５図に示すように、ステム部（10）とこのステム部（1
0）の一端に設けられたカップ部（20）とで構成され、
カップ部（20）の内周面（21）に軸線方向に延びる数条
のボール転動溝（22）が形成されている。2. Description of the Related Art An outer ring of a constant velocity universal joint of the above type has a stem portion (10) and a stem portion (1) as shown in FIGS. 4 and 5, for example.
0) and the cup part (20) provided at one end,
Several ball rolling grooves (22) extending in the axial direction are formed on the inner peripheral surface (21) of the cup portion (20).
上記等速自在継手の外輪を製造する場合、従来は冷間鍛
造にて内周に製品と略同一の溝形状を有する円筒状素材
を製作し、この円筒状素材に板厚を減少する加工所謂し
ごき加工を施すことにより最終製品とする方法が採用さ
れている。尚、上記しごき加工の方法としては、特公昭
48-4809号公報、特公昭53-28252号公報等がある。In the case of manufacturing the outer ring of the constant velocity universal joint, conventionally, cold forging is used to manufacture a cylindrical material having substantially the same groove shape as the product on the inner periphery, and this so-called processing material for reducing the plate thickness A method of making the final product by ironing is adopted. In addition, as a method of the above ironing,
48-4809 and Japanese Patent Publication No. 53-28252.
発明が解決しようとする問題点 従来、上記等速自在継手の外輪の材料として肌焼鋼（例
えばSCr420等）が主に使用されている。ところが、肌焼
鋼は鍛造加工やしごき加工が容易であると云う反面高価
であり、その為、材料コストが割高であると云う欠点が
あった。Problems to be Solved by the Invention Conventionally, case hardening steel (for example, SCr420) is mainly used as a material for the outer ring of the constant velocity universal joint. However, the case-hardening steel is easy to forge and iron, but on the other hand, it is expensive, and therefore has a drawback that the material cost is relatively high.
そこで、より経済的な等速自在継手の外輪を製作する
為、肌焼鋼に替えて機械構造用炭素鋼を使用する試みが
なされている（但し、機械構造用炭素鋼の中でもS9CK、
S15CKおよびS20CKの３種が肌焼鋼に含まれる為、これら
３種以外で、しかも、これら３種よりも炭素量が多い機
械構造用炭素鋼、例えばS28C〜S58Cの機械構造用炭素鋼
を使用するものとし、この発明では肌焼鋼に含まれる上
記３種以外で、しかも、これら３種より炭素量が多い機
械構造用炭素鋼について機械構造用炭素鋼と称するもの
とする。尚、肌焼鋼に含まれるS9CK、S15CKおよびS20CK
の３種は炭素量が0.23％以下であり、S28C〜S58Cの機械
構造用炭素鋼は炭素量が0.25％以上である。）。しかし
ながら、上記機械構造用炭素鋼は炭素量が多いことに起
因して肌焼鋼に比較して著しく延性が劣るため、冷間鍛
造にて内周に製品と略同一の溝形状を有する円筒状素材
を製作することは鍛造割れを起こす為に難しく、また、
1000℃以上に加熱して加工する熱間鍛造では、内周部に
脱炭が発生して製品機能を満足しない等の問題を有して
いる。Therefore, in order to manufacture a more economical outer ring of a constant velocity universal joint, it has been attempted to use carbon steel for machine structure instead of case hardening steel (however, among the carbon steel for machine structure, S9CK,
Since three types of S15CK and S20CK are contained in case-hardening steel, carbon steel for machine structures other than these three types and having a higher carbon content than these three types, for example, S28C to S58C carbon steel for machine structures is used. However, in the present invention, carbon steels for machine structures other than the above-mentioned three kinds contained in case-hardening steels and having a larger carbon content than these three kinds are referred to as carbon steels for machine structures. S9CK, S15CK and S20CK included in case hardening steel
The carbon content of the three types is 0.23% or less, and the carbon steel for machine structural use of S28C to S58C has a carbon content of 0.25% or more. ). However, the carbon steel for machine structural use has a significantly lower ductility than case-hardened steel due to the large amount of carbon, and therefore, it has a cylindrical shape with a groove shape substantially the same as that of the product on the inner periphery by cold forging. It is difficult to manufacture the material because it causes forging cracks, and
In hot forging in which the material is heated to 1000 ° C or higher, there is a problem that decarburization occurs in the inner peripheral portion and the product function is not satisfied.
問題点を解決するための手段 この発明は上記問題点に鑑みて提案され、機械構造用炭
素鋼を用いて最も経済的にカップ深さが60mm以上の等速
自在継手の外輪を製作することを可能にしたもので、そ
の技術的手段は500〜900℃の温間鍛造にてカップ深さが
50mm以下の円筒状素材を製作し、当該円筒状素材を全断
面の断面減少率が25〜45％となるように、また、トラッ
ク溝近傍の肉厚減少率が他の部分の肉厚減少率よりも等
しいか、または大きくなるようにしごき加工して所定の
60mm以上のカップ深さに製作するものである。Means for Solving the Problems This invention has been proposed in view of the above problems, and it is most economical to manufacture an outer ring of a constant velocity universal joint having a cup depth of 60 mm or more using carbon steel for machine structure. It was made possible by the technical means of warm forging at a temperature of 500 to 900 ° C to reduce the cup depth.
A cylindrical material of 50 mm or less is manufactured so that the cross-sectional reduction rate of the entire cross-section of the cylindrical material is 25 to 45%, and the wall thickness reduction rate near the track groove is the wall thickness reduction rate of other parts. Ironing to a value equal to or greater than
It is manufactured with a cup depth of 60 mm or more.
作用 上記技術的手段のようにすれば、等速自在継手外輪の材
料を肌焼鋼から機械構造用炭素鋼に替えた場合でも上記
問題は起こらない。Action The above technical means does not cause the above problem even when the material of the outer ring of the constant velocity universal joint is changed from case hardening steel to carbon steel for machine structure.
実施例 第１図乃至第３図はこの発明による等速自在継手外輪の
具体的な製造方法を説明する為の説明図である。Embodiment FIGS. 1 to 3 are explanatory views for explaining a specific method for manufacturing an outer ring for a constant velocity universal joint according to the present invention.
図面に於いて、（30）は円筒状素材、（31）は円筒状素
材（30）の外周面、（32）は円筒状素材（30）の内周
面、（33）は円筒状素材（30）のボール転動溝、（40）
は最終製品、（41）は最終製品（40）の外周面、（42）
は最終製品（40）の内周面、（43）は最終製品（40）の
ボール転動溝、（44）は最終製品（40）のボール転動溝
（43）と対応する外周面である。In the drawing, (30) is a cylindrical material, (31) is an outer peripheral surface of the cylindrical material (30), (32) is an inner peripheral surface of the cylindrical material (30), and (33) is a cylindrical material ( 30) Ball rolling groove, (40)
Is the final product, (41) is the outer peripheral surface of the final product (40), (42)
Is the inner peripheral surface of the final product (40), (43) is the ball rolling groove of the final product (40), and (44) is the outer peripheral surface corresponding to the ball rolling groove (43) of the final product (40). .
円筒状素材（30）は機械構造用炭素鋼を用い、500〜900
℃の温間鍛造にて製作され、上記温間鍛造に於いて、最
終製品（40）の内周面（42）より若干大きく形成した内
周面（32）に軸線方向に延びる数条のボール転動溝（3
3）を形成する。Cylindrical material (30) uses carbon steel for machine structure, 500-900
Made by warm forging at ℃, in the warm forging, several balls extending in the axial direction on the inner peripheral surface (32) formed slightly larger than the inner peripheral surface (42) of the final product (40). Rolling groove (3
3) to form.
ところで、温間域（500〜900℃）での鍛造加工は金型と
被加工材との摩擦係数が非常に高いので、冷間域、熱間
域での加工よりも破損、摩擦による寿命が短い傾向にあ
る為、金型材質、潤滑剤の選定が重要であるが、更に大
きな要素は円筒状素材（30）のカップ深さである。即
ち、カップ深さが浅いもの、例えば、50mm以下と60mm以
上の深いものの寿命を比較すると、深いものは浅いもの
の1/2〜1/3に低下する。そこで、最終製品（40）のカッ
プ深さが60mm以上のものについては、円筒状素材（30）
のカップ深さを50mm以下で温間鍛造を行い、その後、し
ごき加工により延伸して所定の60mm以上のカップ深さに
製作する。By the way, since the coefficient of friction between the die and the work material is extremely high in forging in the warm range (500 to 900 ° C), it has a longer life due to damage and friction than in the cold and hot ranges. Since it tends to be short, it is important to select the mold material and lubricant, but a larger factor is the cup depth of the cylindrical material (30). That is, comparing the lifespan of a cup having a shallow cup depth, for example, a deep cup having a depth of 50 mm or less and a depth of 60 mm or more, the depth of the deep cup is reduced to 1/2 to 1/3 of that of the shallow cup. Therefore, if the final product (40) has a cup depth of 60 mm or more, the cylindrical material (30)
Warm forging with a cup depth of 50 mm or less, and then drawing by ironing to a predetermined cup depth of 60 mm or more.
最終製品（40）は上記した円筒状素材（30）をポンチと
ダイスにてしごき加工させることにより製作され、上記
しごき加工に於いて、全断面の板厚断面減少率を 但し、So…円筒状素材の断面積 S …最終製品の断面積 とするように設定し、また ボール転動溝近傍の肉厚減少率を 但し、Ｔ…円筒状素材のボール転動溝の肉厚 ｔ…最終製品のボール転動溝の肉厚 ボール転動溝以外の肉厚減少率を 但し、To…円筒状素材のボール転動溝以外の肉厚 to…最終製品のボール転動溝以外の肉厚 として、両者の関係がα＞βとなるように設定しておく
ものである。The final product (40) is manufactured by ironing the above-mentioned cylindrical material (30) with a punch and a die. However, So ... Set the cross-sectional area of the cylindrical material S ... the cross-sectional area of the final product, and set the wall thickness reduction rate near the ball rolling groove. However, T ... Thickness of ball rolling groove of cylindrical material t ... Thickness of ball rolling groove of final product However, To ... the thickness other than the ball rolling groove of the cylindrical material to ... The thickness other than the ball rolling groove of the final product are set so that the relationship between them is α> β.
上記しごき加工により、最終製品（40）のカップ深さ
は、円筒状素材（30）のカップ深さの1.3〜1.8倍に延伸
される。即ち、 但し、Ｈ…円筒状素材のボール転動溝のカップ深さ ｈ…最終製品のボール転動溝のカップ深さ Ho…円筒状素材のボール転動溝間のカップ深さ ho…最終製品のボール転動溝間のカップ深さ となる。By the above ironing process, the cup depth of the final product (40) is stretched to 1.3 to 1.8 times the cup depth of the cylindrical material (30). That is, However, H ... Cup depth of ball rolling groove of cylindrical material h ... Cup depth of ball rolling groove of final product Ho ... Cup depth between balls of cylindrical material ho ... Ball of final product It is the cup depth between rolling grooves.
このようにして得られた最終製品（40）には、従来の肌
焼鋼から機械構造用炭素鋼に替えた場合に起こる問題点
が解決されている。The final product (40) thus obtained solves the problems that occur when the conventional case-hardening steel is replaced with carbon steel for machine structural use.
発明の効果 この発明は以上説明したように、機械構造用炭素鋼を用
い、500〜900℃の温間鍛造にてカップ深さが50mm以下の
円筒状素材を製作し、当該円筒状素材を全断面の断面減
少率が25〜45％となるように、また、トラック溝近傍の
肉厚減少率が他の部分の肉厚減少率よりも等しいか、ま
たは大きくなるようにしごき加工するから、等速自在継
手の外輪を最も経済的に製作することができる。特に、
材料を肌焼鋼から機械構造用炭素鋼に替えたことによる
材料費の低減が大きいが、円筒状素材のカップ深さを50
mm以下で温間鍛造することによる鍛造金型の寿命延長及
びボール転動溝近傍の板厚減少率を他の部分より大きく
することにより、円形状の鍛造金型が使用可能になり、
金型製作費の低減も大きい。EFFECT OF THE INVENTION As described above, the present invention uses the carbon steel for machine structure, produces a cylindrical material having a cup depth of 50 mm or less by warm forging at 500 to 900 ° C., and completes the cylindrical material. Since ironing is performed so that the cross-section reduction rate of the cross-section is 25 to 45%, and the thickness reduction rate near the track groove is equal to or greater than the thickness reduction rate of other parts, etc. The outer ring of the universal joint can be manufactured most economically. In particular,
The material cost is greatly reduced by changing the material from case hardening steel to carbon steel for machine structure, but the cup depth of the cylindrical material is 50
By extending the life of the forging die by warm forging at mm or less and making the thickness reduction rate near the ball rolling groove larger than other parts, a circular forging die can be used.
Greatly reduced die manufacturing costs.
第１図はこの発明による等速自在継手外輪の製造方法を
説明する為の部分拡大平面図、第２図はボール転動溝で
の任意の縦断面図（第１図に於けるO-A線断面図）、第
３図はボール転動溝以外での任意の縦断面図（第１図に
於けるO-B線断面図）、第４図及び第５図はこの発明の
対称とする等速自在継手外輪の概略形状を示す上半分の
平面図及び要部断面正面図である。 （30）……円筒状素材、（40）……最終製品。FIG. 1 is a partially enlarged plan view for explaining a method for manufacturing an outer ring for a constant velocity universal joint according to the present invention, and FIG. 2 is an arbitrary vertical sectional view in a ball rolling groove (section taken along line OA in FIG. 1). FIG. 3 is an arbitrary vertical sectional view (a sectional view taken along the line OB in FIG. 1) other than the ball rolling groove, and FIGS. 4 and 5 are constant velocity universal joints which are symmetrical to this invention. FIG. 3 is a plan view of an upper half showing a schematic shape of an outer ring and a sectional front view of a main part. (30) …… Cylindrical material, (40) …… Final product.
Claims (1)
mm以上の等速自在継手外輪の製造方法において、500〜9
00℃の温間鍛造にてカップ深さが50mm以下の円筒状素材
を製作し、当該円筒状素材を全断面の断面減少率が25〜
45％となるように、また、トラック溝近傍の肉厚減少率
が他の部分の肉厚減少率よりも等しいか、または大きく
なるようにしごき加工して所定の60mm以上のカップ深さ
に製作することを特徴とする等速自在継手外輪の製造方
法。1. A cup depth using carbon steel for machine structural use is 60.
In the manufacturing method of outer ring of constant velocity universal joints of mm or more,
A cylindrical material with a cup depth of 50 mm or less is manufactured by warm forging at 00 ° C, and the cross-sectional reduction rate of the entire cross section of the cylindrical material is 25 ~.
Manufactured to a cup depth of 60 mm or more by ironing so that the wall thickness reduction rate near the track groove is equal to or greater than the wall thickness reduction rate of other parts so that it becomes 45%. A method for manufacturing a constant velocity universal joint outer ring, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12378385A JPH0741366B2 (en) | 1985-06-06 | 1985-06-06 | Constant velocity universal joint outer ring manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12378385A JPH0741366B2 (en) | 1985-06-06 | 1985-06-06 | Constant velocity universal joint outer ring manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61282625A JPS61282625A (en) | 1986-12-12 |
| JPH0741366B2 true JPH0741366B2 (en) | 1995-05-10 |
Family
ID=14869181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12378385A Expired - Fee Related JPH0741366B2 (en) | 1985-06-06 | 1985-06-06 | Constant velocity universal joint outer ring manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741366B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2523372B2 (en) * | 1989-04-28 | 1996-08-07 | 本田技研工業株式会社 | Constant velocity joint outer ring manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5328252B2 (en) | 2008-07-30 | 2013-10-30 | アルパイン株式会社 | Position detection apparatus and position detection method for navigation system |
-
1985
- 1985-06-06 JP JP12378385A patent/JPH0741366B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5328252B2 (en) | 2008-07-30 | 2013-10-30 | アルパイン株式会社 | Position detection apparatus and position detection method for navigation system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61282625A (en) | 1986-12-12 |
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