JPS6392812A - Manufacture of ball stud for rubber ball joint - Google Patents
Manufacture of ball stud for rubber ball jointInfo
- Publication number
- JPS6392812A JPS6392812A JP23855986A JP23855986A JPS6392812A JP S6392812 A JPS6392812 A JP S6392812A JP 23855986 A JP23855986 A JP 23855986A JP 23855986 A JP23855986 A JP 23855986A JP S6392812 A JPS6392812 A JP S6392812A
- Authority
- JP
- Japan
- Prior art keywords
- shell
- ball stud
- hardening
- rubber layer
- 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 31
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000005242 forging Methods 0.000 claims description 5
- 229910000677 High-carbon steel Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008407 joint function Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin 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
- 238000005299 abrasion Methods 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000725 suspension 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
ンケ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 the Invention The present invention relates to a method of manufacturing a ball stud for a rubber ball joint that has improved vibration and shock absorption performance and is used in automobile suspensions, steering linkages, and the like.
従来の技術
ボールスタッド軸心軸と球状の殻との間にラバー層を設
け、振動及び衝撃吸収性能を高めたボールジ目インドに
関する従来の技術としては、例えば特開昭５７−１８１
５号及び特開昭５７−２９８０９号などがある。Conventional technology Conventional technology related to ball stud India in which a rubber layer is provided between the ball stud shaft and the spherical shell to improve vibration and shock absorption performance includes, for example, Japanese Patent Application Laid-Open No. 57-181.
No. 5 and Japanese Unexamined Patent Publication No. 57-29809.
この種のラバーポールジヨイントのボールスタッドは、
球状の殻をラバー層でボールスタッド軸心軸から浮動的
に支持させるので、球状の殻とボールスタッド軸心軸と
の間で振動及び衝撃を緩和させることができる。また、
ポールジヨイント組立後は、球状の殻がポールシタイン
ドの合成樹脂製軸受等に受けられ、軸受の内周球面と低
摩擦で摺動可能なため、ボールスタッドは低作動トルク
で揺動及び回転することができる。This kind of rubber pole joint ball stud is
Since the spherical shell is floatingly supported from the ball stud shaft by the rubber layer, vibrations and shocks can be alleviated between the spherical shell and the ball stud shaft. Also,
After the pole joint is assembled, the spherical shell is received by the synthetic resin bearing of the pole joint and can slide with low friction on the inner spherical surface of the bearing, allowing the ball stud to swing and rotate with low operating torque. can do.
発明が解決しようとする問題点
この種のラバーボールジヨイント用ボールスタッドは、
ラバー層により振動及び衝撃吸収を行わせるものである
ため、スタッド球頭部内にできる限り厚いラバー層を設
けることが求められる。しかし、球状殻の厚さを薄くす
ると、球状殻のわずかな摩耗でボールジヨイント機能が
喪失するという不安が残される。Problems to be Solved by the Invention This type of ball stud for rubber ball joints is
Since the rubber layer absorbs vibrations and shocks, it is required to provide as thick a rubber layer as possible inside the stud ball head. However, if the thickness of the spherical shell is reduced, there remains a concern that the ball joint function will be lost due to slight wear of the spherical shell.
この点、球状殻に焼入れを施し耐摩耗性の向上を図るに
しても、球状殻の内側にはラバー層が設けられているた
め、ラバー層を傷めずに焼入れすることが困難である。In this regard, even if the spherical shell is hardened to improve its wear resistance, since a rubber layer is provided inside the spherical shell, it is difficult to harden the rubber layer without damaging it.
と共に、焼入れに適する高い炭素含有量の潤製の薄い殻
を球状に圧造成形しようとすると、殻に割れが発生する
問題があった。At the same time, when attempting to press-form a thin, moist shell with a high carbon content suitable for quenching into a spherical shape, there was a problem in that the shell would crack.
問題点を解決するだめの手段
焼入れに適する高い炭素含有量の潤製の薄い円筒状殻に
予め球状化焼鈍を施し、その殻の内周にボールスタッド
の頭部をラバー層を介して結合し、つぎに円筒状の殻の
両端部を変形させ該円筒状の゛ 殻を球状に圧造成形し
、その後、球状殻の外表面にレーザ焼入れを施す。Another way to solve the problem is to first apply a spheroidizing annealing to a thin cylindrical shell made of lubricant with a high carbon content suitable for hardening, and then connect the head of the ball stud to the inner periphery of the shell through a rubber layer. Next, both ends of the cylindrical shell are deformed to form the cylindrical shell into a spherical shape, and then the outer surface of the spherical shell is laser hardened.
作 用
殻は炭素含有量が高くかつその厚さが薄くても、事前の
球状化焼鈍によシ球状圧造時に割れが生じず、かつ所望
の硬化適性とレーザ焼入れの組合わせによシ内側のラバ
ー層に悪影響を与えることなく外表面の焼入れができる
。Even though the working shell has a high carbon content and a small thickness, the pre-spheroidizing annealing prevents cracking during the spherical heading process, and the combination of the desired hardenability and laser hardening ensures that the inner surface of the shell is not cracked. The outer surface can be hardened without adversely affecting the rubber layer.
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ッド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、および第３図はそのボールスタッド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 stud 2 before being forged into a spherical shape, Fig. 2 shows the ball stud 2 after being forged into a spherical shape, and Fig. 3 shows the rubber ball stud 2 fitted with the ball stud 2. 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および閉止
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で閉鎮され、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
有する細心軸３と、該頭部４を略囲繞する圧縮されたラ
バー層５および該ラバー層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 thin 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 shaft that substantially surrounds the rubber layer 5. It is composed of a spherical shell 7.
このボールスタッド２ば、球状の殻６がベアリング１３
．１４に支持されることにより、ベアリング内周球面と
殻外周球面が軸心軸３の揺動や回転に伴って摺動するよ
うに成っている。In this ball stud 2, the spherical shell 6 is the bearing 13.
．． By being supported by 14, the inner spherical surface of the bearing and the spherical outer surface of the shell slide as the central shaft 3 swings or rotates.
つぎに上記ボールスタッド２の製造方法について説明す
る。Next, a method of manufacturing the ball stud 2 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
成形され、切削加工および必要によシ浸炭焼入れなどの
熱処理が施される。The 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.
圧造成形前の殻６は、ラバー層５の厚さを増すため十分
に薄いものが選ばれると共に、第４図に示される如く所
望肉厚の円筒状の鋼管を適当な長さに切断し以下の如く
予備加工される。The shell 6 before forging is selected to be sufficiently thin in order to increase the thickness of the rubber layer 5, and a cylindrical steel pipe with a desired wall thickness is cut to an appropriate length as shown in FIG. It is pre-processed as follows.
即ち、第４図に二点鎖線で示されるように、円筒状の殻
６は、軸心軸３の頭部先端に位置する端部９が、プレス
成形などによシ紡錐形状に湾曲形成される。That is, as shown by the two-dot chain line in FIG. 4, the end 9 of the cylindrical shell 6 located at the tip of the head of the shaft 3 is curved into a spindle shape by press molding or the like. be done.
円筒状のこの殻６は、８４５０程度の焼入れに適する高
い炭素含有量の素材によって形成すると共に、上述以降
の加工に先立ち、鋼管の切断前または切断後、或いは紡
錐形状に成形後に、球状化焼鈍を施して殻６の変形抵抗
を低下させる。This cylindrical shell 6 is made of a material with a high carbon content suitable for hardening of about 8450, and is spheroidized before or after cutting the steel pipe, or after forming it into a conical shape, prior to the above-mentioned processing. The deformation resistance of the shell 6 is reduced by annealing.
つぎに金型（図示せず）の中に、予備成形された殻６と
頭部４とをセットし、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 preformed shell 6 and head 4 are set in a mold (not shown), rubber is injected into the opposing space between the shell 6 and the head 4, and vulcanization and baking are performed. The ball stud 2 shown in FIG. 1 is thus 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により
、殻６の両端部８，９を変形させ球状に圧造成形する。Subsequently, the cylindrical shell 6 of the ball stud 2 is pressed into a spherical shape by deforming both ends 8, 9 of the shell 6 using a cup die 20, 21 as shown by two-dot chain lines 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力強く圧縮され、
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 forcefully 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.
さらに、上記球状の殻７の外周面には第５図に示される
如くレーザ焼入れが施される。Further, the outer peripheral surface of the spherical shell 7 is laser hardened as shown in FIG.
このレーザ焼入れ方法としては、ボールスタッド２を軸
線中心に回転せしめ、レーザガン３０を球面に沿わせて
移動させることで、球状表面の略全体に硬化層を形成す
る。In this laser hardening method, the ball stud 2 is rotated around its axis and the laser gun 30 is moved along the spherical surface to form a hardened layer on substantially the entire spherical surface.
このレーザ焼入れによシ、球状の殻７の外表面は耐摩耗
性が高められる。This laser hardening increases the wear resistance of the outer surface of the spherical shell 7.
効 果
以上のように本発明によれば、殻は炭素含有量が高くか
つその厚さが薄くても、事前の球状化焼鈍により球状圧
造時に割れが生じず、かつ所望の硬化適性とレーザ焼入
れの組合わせによシ内側のラバー層に悪影響を与えるこ
となく外表面の焼入れができるので、球状殻の摩耗によ
るボールジヨイント機能の喪失という不安を解消できる
と共に、殻を薄くラバー層を厚くして振動及び衝撃吸収
性能を高めることができる。Effects As described above, according to the present invention, even if the shell has a high carbon content and is thin, cracks do not occur during spherical heading due to the prior spheroidizing annealing, and the desired hardenability and laser hardening are achieved. This combination allows the outer surface to be hardened without adversely affecting the inner rubber layer, eliminating concerns about loss of ball joint function due to abrasion of the spherical shell, and making the shell thinner and the rubber layer thicker. vibration and shock absorption performance can be improved.
図面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
ボールスタッドの断面図。第３図Ｉｒ１５バーポールジ
ヨイントの断面平面図。第４図は円竜状殻の断面図。第
５図はレーザ焼入れ工程の要部の平面図である。
（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。
４・・・・・・頭 部。 ５・・・・・・ラバー層。
６・・−・・（圧造成形前の）円筒状の殻。
７・・・・・・（圧造成形後の）球状の殻。
８．９・・・・・・（殻の）端部。The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of a ball stud before forging. FIG. 2 is a cross-sectional view of the ball stud after forging. FIG. 3 is a sectional plan view of the Ir15 bar pole joint. Figure 4 is a cross-sectional view of the cyclopsoid shell. FIG. 5 is a plan view of the main part of the laser hardening process. (Explanation of symbols) 1...Rubber ball joint. 2・・・・・
・Ball stud. 4...Head. 5...Rubber layer. 6.--Cylindrical shell (before heading molding). 7... Spherical shell (after forging). 8.9... end (of the shell).
Claims (1)
に予め球状化焼鈍を施し、その殼６の内周にボールスタ
ッドの頭部４をラバー層５を介して結合し、つぎに円筒
状の殼６の両端部８、９を変形させ該円筒状の殼６を球
状に圧造成形し、その後、球状殼７の外表面にレーザ焼
入れを施す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。Thin cylindrical shell made of high carbon steel suitable for hardening 6
The head 4 of the ball stud is bonded to the inner periphery of the shell 6 via the rubber layer 5, and then both ends 8 and 9 of the cylindrical shell 6 are deformed to form a cylindrical shape. A method for producing a ball stud for a rubber ball joint, which comprises forging a shell 6 into a spherical shape, and then subjecting the outer surface of the spherical shell 7 to laser hardening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23855986A JPH068644B2 (en) | 1986-10-07 | 1986-10-07 | Manufacturing method of ball stud for rubber ball joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23855986A JPH068644B2 (en) | 1986-10-07 | 1986-10-07 | Manufacturing method of ball stud for rubber ball joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6392812A true JPS6392812A (en) | 1988-04-23 |
| JPH068644B2 JPH068644B2 (en) | 1994-02-02 |
Family
ID=17032036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23855986A Expired - Lifetime JPH068644B2 (en) | 1986-10-07 | 1986-10-07 | Manufacturing method of ball stud for rubber ball joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH068644B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024224781A1 (en) * | 2023-04-27 | 2024-10-31 | 株式会社ソミックマネージメントホールディングス | Ball joint manufacturing method |
-
1986
- 1986-10-07 JP JP23855986A patent/JPH068644B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024224781A1 (en) * | 2023-04-27 | 2024-10-31 | 株式会社ソミックマネージメントホールディングス | Ball joint manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH068644B2 (en) | 1994-02-02 |
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