JPH09327748A - Arm working method - Google Patents
Arm working methodInfo
- Publication number
- JPH09327748A JPH09327748A JP17289696A JP17289696A JPH09327748A JP H09327748 A JPH09327748 A JP H09327748A JP 17289696 A JP17289696 A JP 17289696A JP 17289696 A JP17289696 A JP 17289696A JP H09327748 A JPH09327748 A JP H09327748A
- Authority
- JP
- Japan
- Prior art keywords
- arm
- preform
- mandrel
- burring
- hole
- 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.)
- Pending
Links
Landscapes
- Vehicle Body Suspensions (AREA)
- Forging (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、軸線方向に延びる本体
部と、本体部に対して垂直方向に折曲するバーリング部
とからなるアームの加工方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of processing an arm comprising a body portion extending in the axial direction and a burring portion bent in the direction perpendicular to the body portion.
【０００２】[0002]
【従来の技術】従来より、例えば自動車の懸架装置に
は、車体と車輪支持体をつなぐアームが使用されてい
た。そして車体とアーム、及び車輪支持体とアームとを
連結する手段としてボールジョイントが使用されること
が多くある。このようなアームは図８に示す如く、軸線
方向に延びる本体部１０２と、この本体部１０２に対し
て垂直方向に折曲するバーリング部１０３とを有し、ま
たボールジョイント１１１は、球状の球頭部１１４とこ
の球頭部１１４から延びる柄部１１３とを有するボール
スタッド１１２と、ボールスタッド１１２の球頭部１１
４を包持するベアリング１１５と、ベアリング１１５を
保持するハウジング１１６と、ハウジング１１６の一端
大開口１１９を塞ぐプラグ１２１とから構成され、この
アーム１０１とボールジョイント１１１との結合は、ア
ーム１０１のバーリング部１０３内周孔１０８にボール
ジョイント１１１のハウジング１１６が圧入されて結合
されていた。2. Description of the Related Art Conventionally, an arm connecting a vehicle body and a wheel support has been used, for example, in a suspension system of an automobile. A ball joint is often used as a means for connecting the vehicle body and the arm and the wheel support and the arm. As shown in FIG. 8, such an arm has a main body portion 102 that extends in the axial direction and a burring portion 103 that bends in a direction perpendicular to the main body portion 102, and the ball joint 111 is a spherical ball. A ball stud 112 having a head 114 and a handle 113 extending from the ball head 114, and the ball head 11 of the ball stud 112.
4 includes a bearing 115 for enclosing the bearing 4, a housing 116 for holding the bearing 115, and a plug 121 for closing a large opening 119 at one end of the housing 116. The arm 101 and the ball joint 111 are coupled to each other by the burring of the arm 101. The housing 116 of the ball joint 111 was press-fitted and connected to the inner peripheral hole 108 of the portion 103.
【０００３】上記アーム１０１とボールジョイント１１
１の結合において、ハウジング１１６外周にアーム１０
１が容易に圧入できるように、アーム１０１のバーリン
グ部１０３の一端端部内周に傾斜するテーパ部１０４が
周状に形成されることが多い。このテーパ部１０４は、
金属板を垂直方向に押圧して形成したバーリング部１０
３の一端端部内周に切削加工を施し形成されていた。The arm 101 and the ball joint 11
In the connection of 1, the arm 10 is provided on the outer periphery of the housing 116.
In order that 1 can be easily press-fitted, a taper portion 104 that inclines toward the inner periphery of the one end of the burring portion 103 of the arm 101 is often formed in a circumferential shape. This tapered portion 104 is
Burring part 10 formed by vertically pressing a metal plate
3 was formed by cutting the inner circumference of one end.
【０００４】[0004]
【発明が解決しようとする課題】このようにアーム１０
１のバーリング部１０３のテーパ部１０４を切削加工で
形成すると、バーリング部１０３を折曲加工後、切削加
工を行なうため、前工程と全く別工程でテーパ部１０４
を形成することになり、生産性が低いということがあ
る。また、切削加工によりテーパ部１０４を形成すると
材料が切除されるため、歩留りが悪化するということが
ある。As described above, the arm 10 is provided.
When the tapered portion 104 of the burring portion 103 of No. 1 is formed by cutting, the burring portion 103 is bent and then cut, so that the tapered portion 104 is completely different from the previous step.
Therefore, the productivity may be low. Further, when the tapered portion 104 is formed by cutting, the material is cut off, which may deteriorate the yield.
【０００５】従って、本発明は上述の如き課題を解決
し、生産性を向上させるとともに、歩留りを良好にする
アームの加工方法を提供することを目的とする。Therefore, it is an object of the present invention to solve the above-mentioned problems and to provide a method of processing an arm which improves productivity and improves yield.
【０００６】[0006]
【課題を解決するための手段】本発明は以下の通りであ
る。The present invention is as follows.
【０００７】予め下穴が成形される予備成形材の下穴周
辺を垂直方向に押圧してバーリング部を形成し、その
後、バーリング部の一端端部内周に塑性加工を施しテー
パ部を形成する。The burring portion is formed by vertically pressing the periphery of the pilot hole of the preformed material in which the pilot hole is formed in advance, and then the inner circumference of one end of the burring portion is subjected to plastic working to form a tapered portion.
【０００８】[0008]
【実施例】以下本発明の実施例を図１乃至図７に基づい
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
【０００９】図１は本発明の実施例による加工方法によ
り形成されたアーム１と、アーム１と結合されるボール
ジョイント１１とを表す。アーム１は軸線方向に延びる
本体部２と、この本体部２に対して垂直方向に折曲する
バーリング部３とからなり、このバーリング部３の一端
端部内周に傾斜するテーパ部４が周状に形成される。ま
たボールジョイント１１は、球状の球頭部１４とこの球
頭部１４から延びる柄部１３とを有するボールスタッド
１２と、ボールスタッド１２の球頭部１４を包持するベ
アリング１５と、ベアリング１５を保持するハウジング
１６と、ハウジング１６の一端大開口１９を塞ぐプラグ
２１とから構成される。FIG. 1 shows an arm 1 formed by a processing method according to an embodiment of the present invention, and a ball joint 11 connected to the arm 1. The arm 1 is composed of a main body portion 2 extending in the axial direction and a burring portion 3 which is bent in a direction perpendicular to the main body portion 2, and a taper portion 4 inclined to the inner circumference of one end portion of the burring portion 3 has a circumferential shape. Is formed. The ball joint 11 includes a ball stud 12 having a spherical ball head 14 and a handle 13 extending from the ball head 14, a bearing 15 for enclosing the ball head 14 of the ball stud 12, and a bearing 15. It is composed of a housing 16 that holds it and a plug 21 that closes the large opening 19 at one end of the housing 16.
【００１０】上記アーム１とボールジョイント１１との
結合構造について、その結合方法を説明する。まず図２
に示す如く、固定治具３１に配置されるアーム１の内周
孔８に、テーパ部４側開口からハウジング１６を圧入す
る。このときハウジング１６は、アーム１のテーパ部４
に案内され内周孔８に圧入されるため、容易に圧入でき
る。続いて図３に示す如く、ベアリング１５に球頭部１
４が包持されたボールスタッド１２をハウジング１６の
大開口１９からハウジング１６内に挿入し、プラグ２１
をハウジング１６の大開口１９に挿嵌後、最後にハウジ
ング１６の大開口１９側端部をかしめてハウジング１６
を閉鎖し、アーム１とボールジョイント１１との結合が
完了する。With respect to the connecting structure of the arm 1 and the ball joint 11, the connecting method will be described. First, FIG.
As shown in, the housing 16 is press-fitted into the inner peripheral hole 8 of the arm 1 arranged in the fixing jig 31 from the taper portion 4 side opening. At this time, the housing 16 has the tapered portion 4 of the arm 1.
Since it is guided by and is press-fitted into the inner peripheral hole 8, it can be easily press-fitted. Then, as shown in FIG.
4 is inserted into the housing 16 through the large opening 19 of the housing 16, and the plug 21
Is inserted into the large opening 19 of the housing 16, and finally, the end portion of the housing 16 on the large opening 19 side is caulked.
Is closed, and the connection between the arm 1 and the ball joint 11 is completed.
【００１１】次に上述の如く結合されるアーム１の加工
方法を図４乃至図７に基づいて説明する。Next, a method of processing the arm 1 connected as described above will be described with reference to FIGS.
【００１２】まず図５に基づいてバーリング加工装置５
１を説明すると、６１は上型で、所望するアーム１の内
周孔８と略同径のパンチ６２と、パンチ６２外周側に配
設されるパンチガイド６３を備える。このパンチ６２は
下方からの荷重に対し、バックアップされる図示せぬ弾
性部材によりパンチガイド６３に対し相対的に摺動可能
である。また、７１は下型で、予備成形材５を配置する
下ダイ７２と、下ダイ７２の上側に配設される押え板７
４を備え、下ダイ７２と押え板７４との間に予備成形材
５が挟持可能である。更に下ダイ７２及び押え板７４
は、所望するアーム１のバーリング部３外径と略同径の
貫通孔７３，７５を有し、下ダイ７２の貫通孔７３には
上型６１のパンチ６２と同軸にマンドレル７６が配設さ
れ、下ダイ７２とマンドレル７６との間にはマンドレル
ガイド８０が配設される。前記マンドレル７６は、マン
ドレルガイド８０の内周に密接する基部７９と、基部７
９のパンチ側端部から連続して漸次小径となる外周段部
７８と、外周段部７８のパンチ側端部から連続して同径
のまま延出する突延部７７とからなり、マンドレルガイ
ド８０と一体的に軸線方向に摺動可能である。First, based on FIG. 5, a burring machine 5
1, the upper die 61 is provided with a punch 62 having substantially the same diameter as the inner peripheral hole 8 of the desired arm 1 and a punch guide 63 arranged on the outer peripheral side of the punch 62. The punch 62 is slidable relative to the punch guide 63 by a back-up elastic member (not shown) against a load from below. Reference numeral 71 denotes a lower die, which includes a lower die 72 on which the preforming material 5 is placed, and a holding plate 7 disposed on the upper side of the lower die 72.
4, the preforming material 5 can be sandwiched between the lower die 72 and the pressing plate 74. Further, the lower die 72 and the pressing plate 74
Has through holes 73, 75 having substantially the same diameter as the outer diameter of the desired burring portion 3 of the arm 1, and a mandrel 76 is disposed in the through hole 73 of the lower die 72 coaxially with the punch 62 of the upper die 61. A mandrel guide 80 is arranged between the lower die 72 and the mandrel 76. The mandrel 76 has a base portion 79 that is in close contact with the inner circumference of the mandrel guide 80 and a base portion 7.
The outer peripheral stepped portion 78 of which the diameter is continuously reduced from the punch side end portion of 9 and the protruding portion 77 which continuously extends from the punch side end portion of the outer peripheral stepped portion 78 with the same diameter. It is slidable in the axial direction integrally with 80.
【００１３】上記バーリング加工装置５１でバーリング
加工を行なうと、まず図４の（ア）に示す如く、予めア
ーム１の内周孔８より小径の下穴６が成形される予備成
形材５を、図５に示す如く、下ダイ７２の上部に配置
し、その上側から押え板７４を載置して、予備成形材５
を下ダイ７２と押え板７４との間で挟持固定させる。次
に上方より上型６１を下降させ、図６に示す如く、パン
チ６２により予備成形材５の下穴６周辺を、予備成形材
５の軸線に対して垂直方向に折曲させ、図４の（イ）に
示す如きバーリング部３を成形した中間成形材７を形成
する。続いて図７に示す如く、上型６１を停止した状態
で下型７１のマンドレル７６及びマンドレルガイド８０
を一体的に上方へ移動させる。そしてマンドレル７６に
より、図示せぬ弾性部材で付勢されるパンチ６２を上方
へ押圧移動させるとともに、マンドレル７６の突延部７
７を中間成形材７の内周孔８に進入させる。そして中間
成形材７が上型６１と下型７１との間で規制される状態
で、最終的にマンドレル７６の外周段部７８が中間成形
材７の端部内周を押圧して、図４の（ウ）に示す如く、
傾斜するテーパ部４が周状に形成される。その後、上型
６１が上方へ退避すると同時にマンドレル７６及びマン
ドレルガイド８０が下降し、更に押え板７４が外され、
アーム１の加工が完了する。When burring is performed by the burring apparatus 51, first, as shown in FIG. 4A, the preformed material 5 in which the prepared hole 6 having a smaller diameter than the inner peripheral hole 8 of the arm 1 is preliminarily formed, As shown in FIG. 5, the preform 5 is placed on the lower die 72 and the pressing plate 74 is placed from the upper side.
Is clamped and fixed between the lower die 72 and the pressing plate 74. Next, the upper die 61 is lowered from above, and as shown in FIG. 6, the periphery of the prepared hole 6 of the preforming material 5 is bent by the punch 62 in a direction perpendicular to the axis of the preforming material 5, and An intermediate molded material 7 is formed by molding the burring portion 3 as shown in (a). Subsequently, as shown in FIG. 7, with the upper die 61 stopped, the mandrel 76 and the mandrel guide 80 of the lower die 71.
To move upwards. Then, by the mandrel 76, the punch 62 urged by an elastic member (not shown) is pressed and moved upward, and the protrusion 7 of the mandrel 76 is moved.
7 is inserted into the inner peripheral hole 8 of the intermediate molded material 7. Then, with the intermediate molding material 7 being regulated between the upper mold 61 and the lower mold 71, the outer peripheral stepped portion 78 of the mandrel 76 finally presses the inner circumference of the end portion of the intermediate molding material 7, and As shown in (c),
The inclined taper portion 4 is formed in a circumferential shape. Thereafter, the upper die 61 retracts upward, and at the same time, the mandrel 76 and the mandrel guide 80 descend, and the holding plate 74 is removed.
The processing of the arm 1 is completed.
【００１４】従って、アーム１のバーリング部３を折曲
加工後、塑性加工でテーパ部４を形成するため、連続的
な加工工程でアーム１を形成することができる。また、
テーパ部４を形成するにあたり、材料切除されることが
ない。Therefore, since the tapered portion 4 is formed by plastic working after the burring portion 3 of the arm 1 is bent, the arm 1 can be formed by a continuous working process. Also,
When forming the tapered portion 4, no material is cut off.
【００１５】尚、上記実施例ではバーリング部３とテー
パ部４の形成を一加工装置で行なったが、加工装置を分
けて連続工程で実施しても良い。Although the burring portion 3 and the taper portion 4 are formed by one processing apparatus in the above embodiment, the processing apparatus may be divided and carried out in a continuous process.
【００１６】[0016]
【発明の効果】以上のように本発明によれば、予め下穴
が成形される予備成形材の下穴周辺を垂直方向に押圧し
てバーリング部を形成し、その後、バーリング部の一端
端部内周に塑性加工を施しテーパ部を形成するため、連
続的な加工工程でアームを形成することができ、生産性
を向上させることができる。また、テーパ部を形成する
にあたり、材料が切除されることがないので歩留りが良
好となる。As described above, according to the present invention, the burring portion is formed by vertically pressing the periphery of the pilot hole of the preformed material in which the pilot hole is molded in advance, and then the burring portion is formed within the one end portion. Since the tapered portion is formed by performing the plastic working on the circumference, the arm can be formed by continuous working steps, and the productivity can be improved. Further, since the material is not cut off in forming the tapered portion, the yield is improved.
【図１】本発明の実施例の加工方法により形成したアー
ムの使用状態を表す部分断面正面図である。FIG. 1 is a partial sectional front view showing a usage state of an arm formed by a processing method according to an embodiment of the present invention.
【図２】本発明の実施例の加工方法により形成したアー
ムと他部材との結合方法の第一段階を表す断面正面図で
ある。FIG. 2 is a cross-sectional front view showing a first step of a method of connecting an arm and another member formed by the processing method according to the embodiment of the present invention.
【図３】本発明の実施例の加工方法により形成したアー
ムと他部材との結合方法の第二段階を表す部分断面正面
図である。FIG. 3 is a partial cross-sectional front view showing a second step of the method of joining the arm and another member formed by the working method of the embodiment of the present invention.
【図４】本発明の実施例の加工方法により順次加工され
るアームを表す断面正面図である。FIG. 4 is a sectional front view showing an arm that is sequentially processed by the processing method according to the embodiment of the present invention.
【図５】本発明の実施例の加工方法の第一段階を表す部
分断面正面図である。FIG. 5 is a partial cross-sectional front view showing the first stage of the processing method according to the embodiment of the present invention.
【図６】本発明の実施例の加工方法の第二段階を表す部
分断面正面図である。FIG. 6 is a partial sectional front view showing a second stage of the processing method according to the embodiment of the present invention.
【図７】本発明の実施例の加工方法の第三段階を表す部
分断面正面図である。FIG. 7 is a partial sectional front view showing a third stage of the processing method according to the embodiment of the present invention.
【図８】従来の加工方法により形成したアームの使用状
態を表す部分断面正面図である。FIG. 8 is a partial cross-sectional front view showing a usage state of an arm formed by a conventional processing method.
２ 本体部 ３ バーリング部 ４ テーパ部 ５ 予備成形材 ６ 下 穴 2 Body part 3 Burring part 4 Tapered part 5 Preformed material 6 Pilot hole
Claims (1)
体部（２）に対して垂直方向に折曲するバーリング部
（３）とからなり、該バーリング部（３）の一端端部内
周に傾斜するテーパ部（４）が周状に形成されるアーム
の加工方法において、予め下穴（６）が成形される予備
成形材（５）の下穴（６）周辺を垂直方向に押圧してバ
ーリング部（３）を形成し、その後、バーリング部
（３）の一端端部内周に塑性加工を施しテーパ部（４）
を形成することを特徴とするアームの加工方法。1. A body portion (2) extending in the axial direction and a burring portion (3) bent in a direction perpendicular to the body portion (2), the inside of one end portion of the burring portion (3). In a method of processing an arm in which a tapered portion (4) inclined in a circumference is formed in a circumferential shape, a peripheral portion of a prepared hole (6) of a preformed material (5) in which a prepared hole (6) is formed in advance is vertically pressed. To form the burring portion (3), and thereafter, the inner circumference of one end of the burring portion (3) is subjected to plastic working to form the tapered portion (4).
A method for processing an arm, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17289696A JPH09327748A (en) | 1996-06-12 | 1996-06-12 | Arm working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17289696A JPH09327748A (en) | 1996-06-12 | 1996-06-12 | Arm working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09327748A true JPH09327748A (en) | 1997-12-22 |
Family
ID=15950352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17289696A Pending JPH09327748A (en) | 1996-06-12 | 1996-06-12 | Arm working method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09327748A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012025180A (en) * | 2010-07-20 | 2012-02-09 | Kyoei-Seisakusho Co Ltd | Method for manufacturing relay arm body |
| JP2015083312A (en) * | 2013-10-25 | 2015-04-30 | ダイハツ工業株式会社 | Flange processing device and processing method |
| CN107635682A (en) * | 2015-07-08 | 2018-01-26 | 本田技研工业株式会社 | Flange processing method, flange processing system and pressure forming part |
| EP2477765B1 (en) * | 2009-09-14 | 2018-08-29 | Magna International Inc. | Method for manufacturing a control arm for a vehicle |
-
1996
- 1996-06-12 JP JP17289696A patent/JPH09327748A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2477765B1 (en) * | 2009-09-14 | 2018-08-29 | Magna International Inc. | Method for manufacturing a control arm for a vehicle |
| JP2012025180A (en) * | 2010-07-20 | 2012-02-09 | Kyoei-Seisakusho Co Ltd | Method for manufacturing relay arm body |
| JP2015083312A (en) * | 2013-10-25 | 2015-04-30 | ダイハツ工業株式会社 | Flange processing device and processing method |
| CN107635682A (en) * | 2015-07-08 | 2018-01-26 | 本田技研工业株式会社 | Flange processing method, flange processing system and pressure forming part |
| CN107635682B (en) * | 2015-07-08 | 2019-05-03 | 本田技研工业株式会社 | Flange processing method, flange processing system and pressure forming component |
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