JPS63145813A - Manufacturing method of ball stud for rubber ball joint - Google Patents
Manufacturing method of ball stud for rubber ball jointInfo
- Publication number
- JPS63145813A JPS63145813A JP29289886A JP29289886A JPS63145813A JP S63145813 A JPS63145813 A JP S63145813A JP 29289886 A JP29289886 A JP 29289886A JP 29289886 A JP29289886 A JP 29289886A JP S63145813 A JPS63145813 A JP S63145813A
- Authority
- JP
- Japan
- Prior art keywords
- shell
- head
- rubber layer
- sphere
- rubber
- 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
- 229920001971 elastomer Polymers 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000465 moulding Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005242 forging Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 101000767160 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) Intracellular protein transport protein USO1 Proteins 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Pivots And Pivotal Connections (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、自動車のサスペンション又はステアリングリ
ンクージ等において使用される、振動及び衝撃吸収性能
を高めたラバーボールジヨイント用ボールスタッドの製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a ball stud for a rubber ball joint with improved vibration and shock absorption performance used in an automobile suspension or steering linkage.
従来の技術
ボールジヨイントのソケット内周にスタッド軸端の球状
殼を摺動自在に支持すると共に、スタッド軸心軸と球状
の殻との間にラバー層を設けたラバーボールジヨイント
としては、特開昭５７−１８１５号及び特開昭５７−２
９８０９号などがある。Conventional technology Rubber ball joints have a spherical shell at the end of the stud shaft slidably supported on the inner periphery of the socket of the ball joint, and a rubber layer is provided between the stud shaft and the spherical shell. JP-A-57-1815 and JP-A-57-2
9809 etc.
発明が解決しようとする問題点
コノ種ラバーボールジヨイントの耐荷型特性ヲ高めるた
め、第４図に示す如く、球状殼７の先端側表面９０表面
積を他方の軸側表面８０表面積よりも大きく形成すると
、円筒状の殻６を球状に圧造成形した際に、軸心軸３球
状頭部４の先端側にその球状殼７が意図に反して片寄る
問題がある。Problems to be Solved by the Invention In order to improve the load-bearing characteristics of this type of rubber ball joint, as shown in FIG. Then, when the cylindrical shell 6 is forged into a spherical shape, there is a problem that the spherical shell 7 is unintentionally biased toward the tip side of the spherical head 4 of the shaft center shaft 3.
そのため、殻の片寄シを解消して与えられた仕様のラバ
ー層５厚さを得るには、多大な試作テスト工数を費やし
て試行錯誤し、軸心軸頭部に対する円筒状殻の変位量及
び、円筒状殻と頭部との間に介装するラバー量を選定し
なければならない煩わしさがある。Therefore, in order to eliminate the unevenness of the shell and obtain the thickness of the rubber layer 5 that meets the given specifications, a large amount of trial and error is spent on prototyping and testing, and the amount of displacement of the cylindrical shell with respect to the shaft head is determined. However, there is the trouble of having to select the amount of rubber to be inserted between the cylindrical shell and the head.
しかもこれらの条件は、ボールスタッドの仕様が若干変
更されただけでも前述と同等程度の試行錯誤を要する問
題があった。Moreover, these conditions have the problem that even if the specifications of the ball stud are slightly changed, trial and error to the same extent as described above is required.
問題点を解決するだめの手段
予めスタッド軸心軸一端に球状の頭部を形成すると共に
該頭部の先端側半球部を反対側の半球部よりも大きな曲
率半径の球面に欠肉形成し、その頭部の外周にラバー層
を介して略円筒状の殻を結合すると共に該殻の前記先端
側半球部を囲繞する先端側表面の表面積を、他方の半球
部を囲繞する外周表面の表面積よりも大きく成るように
配設し、その後前記円筒状の殻６の両端側を変形させ該
殻を略真球状の球状殼７に圧造する。Another means for solving the problem is to form a spherical head at one end of the stud shaft in advance, and to form a hemisphere on the tip side of the head into a spherical surface with a larger radius of curvature than the hemisphere on the opposite side, A substantially cylindrical shell is connected to the outer periphery of the head via a rubber layer, and the surface area of the distal surface surrounding the distal hemisphere of the shell is larger than the surface area of the outer circumferential surface surrounding the other hemisphere. After that, both ends of the cylindrical shell 6 are deformed and the shell is pressed into a substantially perfect spherical shell 7.
作 用
先端側半球部を囲繞する外周表面積と他方の半球部を囲
繞する外周表面積との面積差によって生じる殻圧造成形
時の球状殼の片寄りは、軸心軸球頭部先端側の半球部を
曲率半径の大きな球面に欠肉形成したことで、殻圧造成
形時のラバー層の変形抵抗が先端側半球部で小さく反対
側の半球部で大きく成ることで打ち消される。The deviation of the spherical shell during shell heading molding caused by the area difference between the outer circumferential surface area surrounding one hemisphere on the tip side and the outer circumferential surface area surrounding the other hemisphere is caused by the deviation of the hemisphere on the tip side of the shaft By forming the underfill on a spherical surface with a large radius of curvature, the deformation resistance of the rubber layer during shell forging is reduced in the hemisphere on the tip side and large in the hemisphere on the opposite side, which cancels it out.
そのため殻は、球状圧造成形によっても軸心軸頭部に対
して然程変位しなくなる。Therefore, the shell does not displace appreciably with respect to the shaft head even by spherical heading molding.
実 施 例
以下本発明の実施例のその構成を図面に基づいて説明す
る。Embodiment The structure of an embodiment of the present invention will be explained below based on the drawings.
第１図は球状に圧造成形する前のボールスタンド２を表
わし、第２図は球状に圧造成形した後のボールスタッド
２を表わし、及び第３図はそのボールスタンド２が装着
されたラバーボールジヨイント１を表わしている。FIG. 1 shows the ball stand 2 before it is forged into a spherical shape, FIG. 2 shows the ball stud 2 after it is forged into a spherical shape, and FIG. 3 shows the rubber ball stud 2 on which the ball stand 2 is attached. It represents int 1.
このラバーボールジヨイント１は、ボールスタッド２の
他、ソケット１０、合成樹脂製のアッパーベアリング１
３、ウレタンゴム製のロアーベアリング１４及び閉止板
１２を具備している。This rubber ball joint 1 includes a ball stud 2, a socket 10, and an upper bearing 1 made of synthetic resin.
3. It is equipped with a lower bearing 14 and a closing plate 12 made of urethane rubber.
ソケット１０は略円筒状で両端に開口を有し、その一方
の開口は閉止板１２で閉鎖され、他方の開口１１はボー
ルスタッド２の軸心軸３を揺動自在に突出させている。The socket 10 has a substantially cylindrical shape and has openings at both ends, one of which is closed by a closing plate 12, and the other opening 11 allows the axis 3 of the ball stud 2 to protrude swingably.
ボールスタッド２は、一端に球状に膨出された頭部４を
有する軸心軸３と、該頭部４を略囲繞する圧縮されたラ
バー層５及び該ラバー層５を略囲繞する薄肉の鋼製球状
の殻７とによって構成されている。The ball stud 2 includes a shaft 3 having a spherically bulged head 4 at one end, a compressed rubber layer 5 that substantially surrounds the head 4, and a thin steel layer that substantially surrounds the rubber layer 5. It is composed of a spherical shell 7.
コノボールスタッド２は、球状の殻７がベアリング１８
．１４に支持されることによシ、ベアリング内周球面と
殻外周表面が軸心軸３の揺動や回転に伴って摺動するよ
うに成っている。Conoball stud 2 has a spherical shell 7 bearing 18
．． By being supported by 14, the inner spherical surface of the bearing and the outer peripheral surface of the shell slide as the shaft center shaft 3 swings or rotates.
つぎに上記ボールスタッドの製造方法について説明する
。Next, a method for manufacturing the above ball stud will be explained.
頭部４を有する軸心軸３は、予め冷間塑性加工によって
形成され、切削加工及び必要により浸炭焼入れなどの熱
処理が施される。The axial center shaft 3 having the head 4 is formed in advance by cold plastic working, and subjected to cutting and, if necessary, heat treatment such as carburizing and quenching.
この頭部４の形状は、該頭部の先端側半球部１６が反対
側の半球部１５よりも大きな曲率半径Ｒ１の球面に欠肉
形成されている。The shape of the head 4 is such that the hemisphere 16 on the distal end side of the head is formed into a spherical surface with a radius of curvature R1 larger than that of the hemisphere 15 on the opposite side.
即ち、この頭部４は、軸側半球部１５の曲率半径Ｒ２で
描かれる仮想球よりも先端側半球部１６が欠肉した如く
形成されている。That is, the head 4 is formed so that the tip side hemisphere 16 is thinner than the virtual sphere drawn by the radius of curvature R2 of the shaft side hemisphere 15.
殻６は、所望肉厚の円筒状の鋼管を適当な長さに切断し
た後、プレス成形などによシ紡錘形状に湾曲形成される
。The shell 6 is formed by cutting a cylindrical steel pipe with a desired wall thickness into an appropriate length, and then bending it into a spindle shape by press molding or the like.
次にこの予備成形された殻６の内側に軸心軸の頭部４を
セットし、殻６と頭部４との対向空間にラバーを注入し
、加硫焼付は処理を施して、第１図に示されるボールス
タッド２を形成する。Next, the head 4 of the shaft center shaft is set inside this preformed shell 6, rubber is injected into the opposing space between the shell 6 and the head 4, vulcanization and baking are performed, and the first A ball stud 2 shown in the figure is formed.
続いてこのボールスタッド２の円筒形の殻６を、第２図
に二点鎖線で示すようなカップダイス２０．２１によシ
、殻６の両端部８，９を変形させ球状に圧造成形する。Next, the cylindrical shell 6 of the ball stud 2 is pressed into a spherical shape by deforming both ends 8 and 9 of the shell 6 using a cup die 20, 21 as shown by the two-dot chain line in FIG. .
このように殻７が球状に成形されるに伴ない、ラバー層
５のボールスタッド軸線方向の両端部が強く圧縮され、
ラバー層５にはボールジヨイント使用中のラバー層の剥
離を防止するに十分な圧縮応力が与えられる。As the shell 7 is formed into a spherical shape, both ends of the rubber layer 5 in the ball stud axis direction are strongly compressed.
A compressive stress sufficient to prevent the rubber layer from peeling off during use of the ball joint is applied to the rubber layer 5.
また、殻６が球状に圧造成形された際に、軸心軸頭部４
が殻６に関して該殻の先端側へ然程変位せず、頭部４は
予め設定した頭部４と殻６との相対位置に片寄り無く位
置する。In addition, when the shell 6 is formed into a spherical shape, the shaft center shaft head 4
is not displaced appreciably toward the distal end of the shell 6, and the head 4 is positioned at a preset relative position between the head 4 and the shell 6 without any deviation.
効 果
以上のように本発明によれば、殻は球状圧造成形゛によ
っても軸心軸頭部に対して然程変位しなくなるので、所
定仕様のラバー層肉厚を有するスタッド製造条件、即ち
軸心軸頭部に対する円筒状殻の変位量及び円筒状殻と頭
部との間に介装するラバー量の条件設定に試行錯誤を要
せず、その条件設定が極めて容易に成る。Effects As described above, according to the present invention, the shell does not displace appreciably with respect to the shaft head even by spherical forging, so that the stud manufacturing conditions with the rubber layer thickness of the predetermined specifications, that is, the shaft Trial and error is not required to set the conditions for the amount of displacement of the cylindrical shell with respect to the head of the mandrel and the amount of rubber interposed between the cylindrical shell and the head, and the conditions can be set extremely easily.
第１図乃至第３図は本発明の実施例を表わすもので、第
１図は圧造成形前のボールスタッドの断面図。第２図は
圧造成形後のボールスタッドドの断面図。第３図はラバ
ーボールジヨイントの断面図。
第４図は従来の圧造成形後のボールスタッドの断面図で
ある。
（記号の説明）
１・・・・・・ラバーボールジヨイント。
２・・・・・・ボールスタッド。 訃・・・・・軸
心 軸。
４・・・・・・頭部。 ５・・・・・・ラ バ 一
層。
６・・・・・・（円筒状の）殻。 ７・・・・・・
（球状の）殻。
８．９・・・・・・（殻の）外周表面。
１５、１６・・・・・・（頭部の）半球部。
Ｒ１・・・・・・曲率半径。1 to 3 show embodiments of the present invention, and FIG. 1 is a sectional view of a ball stud before forging. FIG. 2 is a cross-sectional view of the ball stud after forging. Figure 3 is a cross-sectional view of the rubber ball joint. FIG. 4 is a sectional view of a conventional ball stud after forging. (Explanation of symbols) 1...Rubber ball joint. 2...Ball stud. Death...Axis, heart, axis. 4...Head. 5... Lava one layer. 6... (cylindrical) shell. 7...
(spherical) shell. 8.9...The outer peripheral surface (of the shell). 15, 16... Hemispherical part (of the head). R1... Radius of curvature.
Claims (1)
と共に該頭部４の先端側半球部１６を反対側の半球部１
５よりも大きな曲率半径Ｒ＿１の球面に欠肉形成し、そ
の頭部４の外周にラバー層５を介して略円筒状の殼６を
結合すると共に該殼６の前記先端側半球部１６を囲繞す
る先端側表面９の表面積を、他方の半球部１５を囲繞す
る外周表面８の表面積よりも大きく成るように配設し、
その後前記円筒状の殼６の両端側を変形させ該殼６を略
真球状の球状殼７に圧造することを特徴とするラバーボ
ールジョイント用ボールスタッドの製造方法。A spherical head 4 is formed in advance on one end of the stud's two-axis center shaft 3, and the distal hemisphere 16 of the head 4 is connected to the hemisphere 1 on the opposite side.
A substantially cylindrical shell 6 is formed on a spherical surface with a radius of curvature R_1 larger than 5, and a substantially cylindrical shell 6 is connected to the outer periphery of the head 4 via a rubber layer 5, and the shell 6 surrounds the hemispherical portion 16 on the tip side. The surface area of the distal end surface 9 is larger than the surface area of the outer circumferential surface 8 surrounding the other hemisphere 15,
A method of manufacturing a ball stud for a rubber ball joint, characterized in that both ends of the cylindrical shell 6 are then deformed and the shell 6 is forged into a substantially spherical shell 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29289886A JPH0637889B2 (en) | 1986-12-09 | 1986-12-09 | Manufacturing method of ball stud for rubber ball joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29289886A JPH0637889B2 (en) | 1986-12-09 | 1986-12-09 | Manufacturing method of ball stud for rubber ball joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63145813A true JPS63145813A (en) | 1988-06-17 |
| JPH0637889B2 JPH0637889B2 (en) | 1994-05-18 |
Family
ID=17787818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29289886A Expired - Lifetime JPH0637889B2 (en) | 1986-12-09 | 1986-12-09 | Manufacturing method of ball stud for rubber ball joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637889B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0571528A (en) * | 1991-09-12 | 1993-03-23 | Hitachi Ltd | Mechanical transmission using ball joint and compressor using it |
-
1986
- 1986-12-09 JP JP29289886A patent/JPH0637889B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0571528A (en) * | 1991-09-12 | 1993-03-23 | Hitachi Ltd | Mechanical transmission using ball joint and compressor using it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0637889B2 (en) | 1994-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3774280A (en) | Method of fabricating hollow balls for use in rolling contact bearing applications | |
| US5755826A (en) | Golf club shaft and process for manufacturing same | |
| DE10262241B4 (en) | ball joint | |
| JPS6148609A (en) | Manufacturing method of ball-joint | |
| US5813789A (en) | Ball-and-socket joint | |
| US3999872A (en) | Preloaded tie rod end assembly | |
| US3988818A (en) | Tie rod end | |
| US3030132A (en) | Pivotal joints for universal movement | |
| US20100000285A1 (en) | Ball joint element and method of forming same | |
| JPH11247877A (en) | Constant velocity joint and molding method of its outer ring | |
| JPS63145813A (en) | Manufacturing method of ball stud for rubber ball joint | |
| JPH05293887A (en) | Manufacture of lining pipe joint | |
| JPS63145814A (en) | Ball stud for ball joint | |
| JPH01116313A (en) | Manufacture method for ball stud of rubber ball joint | |
| JPS62274110A (en) | Rubber ball stud for ball joint | |
| JPS62270813A (en) | Manufacture of ball stud for rubber ball joint | |
| JPS6224021A (en) | Ball stud for rubber ball joint | |
| JPH068644B2 (en) | Manufacturing method of ball stud for rubber ball joint | |
| JPS62110831A (en) | Forming method for inner wheel of uniform joint | |
| JPS62270814A (en) | Manufacture of ball stud for rubber ball joint | |
| JPH0330726B2 (en) | ||
| GB1586732A (en) | Method of forming a ball joint between two pipes | |
| JPS62274109A (en) | Rubber ball stud for ball joint | |
| JPS62292916A (en) | Method of manufacturing ball stud | |
| JPS62177311A (en) | Ball stud for ball joint |