JPH02241675A - Manufacture of welded body - Google Patents
Manufacture of welded bodyInfo
- Publication number
- JPH02241675A JPH02241675A JP6273789A JP6273789A JPH02241675A JP H02241675 A JPH02241675 A JP H02241675A JP 6273789 A JP6273789 A JP 6273789A JP 6273789 A JP6273789 A JP 6273789A JP H02241675 A JPH02241675 A JP H02241675A
- Authority
- JP
- Japan
- Prior art keywords
- shape
- welded
- welding
- convexity
- resistance welding
- 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
- 238000004519 manufacturing process Methods 0.000 title description 4
- 238000003466 welding Methods 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 abstract description 23
- 229910052751 metal Inorganic materials 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 150000002739 metals Chemical class 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 7
- 239000007779 soft material Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は例えば自動車に装着されるステアリングホイー
ルのリング部芯金としての溶接体の製造方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a welded body as a core metal for a ring portion of a steering wheel mounted on, for example, an automobile.
従来、ステアリングホイールにおけるリング部の芯金は
、パイプ状の芯金の突き合せ部に対し、抵抗溶接を行う
ことによって製造されている。即ち、第９図に示すよう
に、芯金１１の突き合せ部１２に所定の圧力を印加して
突き合わせながら、電橋１３に所定の電流を流し抵抗溶
接を行うことによって溶接体としてのリング部の芯金を
製造していた。Conventionally, a core metal of a ring portion of a steering wheel is manufactured by resistance welding abutting portions of pipe-shaped core metals. That is, as shown in FIG. 9, a predetermined pressure is applied to the abutting portion 12 of the core metal 11 and the abutting portion 12 is abutted, while a predetermined current is applied to the electric bridge 13 to perform resistance welding, thereby forming a ring portion as a welded body. Manufactured core metals.
［発明が解決しようとする課題］
ところが、上記の方法において、第１０図に示すように
、得られる芯金１１はその溶接部１４の外周部において
、例えば非溶接部１５の外径１２■に対して１−＋１以
上の膨らみが生ずることがあり、しかもその先端部には
尖ったパリが発生する場合があった。そのため、芯金１
１の外周部にウレタン樹脂等を被覆する場合、ウレタン
樹脂の流動性が悪（なり、成形不良が発生する原因とな
るおそれがあるという問題点があった。[Problems to be Solved by the Invention] However, in the above method, as shown in FIG. On the other hand, a bulge of 1-+1 or more may occur, and a sharp bulge may occur at the tip. Therefore, core metal 1
When coating the outer circumferential portion of 1 with urethane resin or the like, there is a problem in that the urethane resin has poor fluidity, which may cause molding defects.
本発明の目的は、溶接部の膨らみを一定の形状のものと
することができるとともに、パリの発生を防止すること
ができる溶接体の製造方法を提供することにある。An object of the present invention is to provide a method for manufacturing a welded body that can make the bulge of the welded part have a constant shape and can prevent the occurrence of flash.
［課題を解決するための手段］
上記目的を達成するために、本発明では溶接される部材
の突き合せ部の外周に、溶接後の溶接部の外径を規制す
る形状規制部材を配置するとともに、突き合せ部を突き
合わせて抵抗溶接するという手段を採用している。[Means for Solving the Problem] In order to achieve the above object, in the present invention, a shape regulating member for regulating the outer diameter of the welded part after welding is arranged on the outer periphery of the abutting part of the members to be welded, and , a method is adopted in which the butt parts are brought together and resistance welded.
［作用］
上記手段を採用したことにより、溶接される部材の突き
合せ部を抵抗溶接する際、あらかじめその外周に溶接後
の溶接部の外径を規制する形状規制部材が配置されてい
るので、溶接後の溶接部の膨らみは形状規制部材によっ
て所定の形状に形成され、しかもその膨らみにはパリが
発生しない。[Function] By employing the above means, when resistance welding the butt portions of the members to be welded, a shape regulating member is placed on the outer periphery in advance to regulate the outer diameter of the welded portion after welding. The bulge of the welded portion after welding is formed into a predetermined shape by the shape regulating member, and no cracks occur in the bulge.
［実施例］
以下に本発明を具体化した一実施例を第１〜４図に基づ
いて説明する。[Example] An example embodying the present invention will be described below based on FIGS. 1 to 4.
第１図に示すように、リング状の芯金１ （外径約１２
ｍｍ）の突き合せ部２には、形状規制部材としてのクラ
ンプ３が突き合せ部２を覆うように配置されている。同
クランプ３は第２図（ａ）及び（ｂ）に示すように、二
分割された一対のクランプ片３ａ、３ｂからなっており
、クランプ３の中央部には芯金１の非溶接部４の外径に
相当する挿通孔６が貫設されている。As shown in Fig. 1, a ring-shaped core metal 1 (outer diameter approximately 12
mm), a clamp 3 serving as a shape regulating member is arranged to cover the abutting portion 2 . As shown in FIGS. 2(a) and 2(b), the clamp 3 consists of a pair of clamp pieces 3a and 3b divided into two parts. An insertion hole 6 corresponding to the outer diameter of is provided through the hole.
同クランプ３の芯金１の突き合せ部２に相当する位置に
は、挿通孔６よりも大きい外径を有するとともに、溶接
後の溶接部５の中央部が最も膨らんだドーナツ状の形状
を有する拡径部７が形成されている。このクランプ３は
、抵抗溶接時に突き合せ部２に高電流が流れ、しかも高
温になるため、一定の強度を有し、電気絶縁性が高く、
かつ耐熱性の良い材料で製造されることが必要であり、
例えば窒化ケイ素、アルミナ等のセラミックス等が使用
される。The position corresponding to the abutting part 2 of the core bar 1 of the clamp 3 has an outer diameter larger than that of the insertion hole 6, and the welded part 5 after welding has a doughnut-like shape with the center part bulging out the most. An enlarged diameter portion 7 is formed. This clamp 3 has a certain strength and high electrical insulation because a high current flows through the butt part 2 during resistance welding and the temperature becomes high.
It also needs to be manufactured from materials with good heat resistance.
For example, ceramics such as silicon nitride and alumina are used.
上記クランプ３の両側における芯金１の非溶接部４外周
には、それぞれ一対の電極８ａ、８ｂが配置され、各々
に所定の電流を流すことによって上記芯金１の突き合せ
部２の抵抗溶接を行うことができるようになっている。A pair of electrodes 8a and 8b are arranged on the outer periphery of the non-welded portion 4 of the core metal 1 on both sides of the clamp 3, and resistance welding of the abutting portion 2 of the core metal 1 is performed by passing a predetermined current through each electrode. It is now possible to do this.
また、電極８ａ。Moreover, the electrode 8a.
８ｂの両側には、図示しない押圧装置が配設され、芯金
１を突き合せ部２において一定の圧力で突き合せるよう
になっている。Pressing devices (not shown) are disposed on both sides of 8b to abut the core metal 1 at the abutting portion 2 with a constant pressure.
さて、第１図に示すように、リング状の一部が切欠かれ
、溶接によって溶融する分だけわずかに長い芯金１を所
定の位置に配置する０次に同芯金１の突き合せ部２の外
周に、一対のクランプ片３ａ、３ｂを配置して互いに締
付は固定する。このクランプ片３ａ、３ｂは簡易な構造
を有しているので、突き合せ部２における芯金１の外周
部の所定位置に容易に装着することができる。次いで、
図示しない押圧装置により突き合せ部２に対し、１００
〜５００ｋｇ／ｅｎｌの圧力を印加する。そして、電極
３ａ、３ｂにそれぞれ電流４０００〜２００００Ａ１通
電時間０．１〜１秒で非通電時間０゜１〜０．２秒のパ
ルスの電流を流し抵抗溶接を行う。この抵抗溶接の条件
は、芯金１の形状、材質等によって適切な条件に設定さ
れる。Now, as shown in FIG. 1, a butt part 2 of the zero-order concentric metal 1 is placed in a predetermined position with a ring-shaped part cut out and a slightly longer core 1 to be melted by welding. A pair of clamp pieces 3a and 3b are arranged around the outer periphery of the body and are tightened and fixed together. Since the clamp pieces 3a and 3b have a simple structure, they can be easily attached to predetermined positions on the outer periphery of the core metal 1 in the abutting portion 2. Then,
A pressing device (not shown) applies a pressure of 100 mm to the abutting portion 2.
Apply a pressure of ~500 kg/enl. Then, a pulsed current of 4,000 to 20,000 A, an energizing time of 0.1 to 1 second and a non-energizing time of 0.1 to 0.2 seconds is applied to the electrodes 3a and 3b to perform resistance welding. The conditions for this resistance welding are set to appropriate conditions depending on the shape, material, etc. of the core metal 1.
溶接時の据え込み量、即ち溶接し始めてからの芯金１の
突き合せ部２の移動距離は１〜４ｍｍ程度である。抵抗
溶接によって、突き合せ部２は互いに溶融して外周部側
及び内周部側へ膨らむ。このとき、外周部側に形成され
た膨らみ部Ｅは前記クランプ３の拡径部７によって、そ
の形状が規制され、同拡径部７と同様の形状となる。The amount of upsetting during welding, that is, the distance that the abutting portion 2 of the core metal 1 moves after welding starts is about 1 to 4 mm. By resistance welding, the abutted portions 2 are melted together and bulged toward the outer circumferential side and the inner circumferential side. At this time, the shape of the bulge E formed on the outer peripheral side is regulated by the enlarged diameter part 7 of the clamp 3, and has the same shape as the enlarged diameter part 7.
従って、溶接終了後、クランプ３を開放すると、第３図
に示すように、溶接後の溶接部５の外観は、その膨らみ
部Ｅの膨らみが中央部で約０．５ｍｍとなり、従来より
小さく、かつ表面が滑らかであり、またその膨らみ部已
にパリが発生しない。なお、溶接部５の内周部には、抵
抗溶接によって不規則な形状の膨らみが発生するが、ウ
レタン樹脂の被覆や溶接部５の強度に影響はしない。Therefore, when the clamp 3 is released after welding is completed, as shown in FIG. 3, the appearance of the welded part 5 after welding is that the bulge E of the welded part 5 has a bulge of about 0.5 mm at the center, which is smaller than before. In addition, the surface is smooth, and no cracks occur on the bulge. Note that although an irregularly shaped bulge is generated at the inner peripheral portion of the welded portion 5 due to resistance welding, it does not affect the urethane resin coating or the strength of the welded portion 5.
このようにして、第４図に示すような芯金１が得られる
。この芯金１の外周部に射出成形によって、軟質材とし
てのウレタン樹脂を被覆する。このとき、ウレタン樹脂
は芯金１の溶接部５の表面を円滑に流れ、所定の形状に
成形される。In this way, a core bar 1 as shown in FIG. 4 is obtained. The outer periphery of the core metal 1 is coated with urethane resin as a soft material by injection molding. At this time, the urethane resin flows smoothly over the surface of the welded portion 5 of the core metal 1 and is formed into a predetermined shape.
上記のように、本実施例によれば、芯金１の溶接部５の
強度に影響を与えることな（、溶接部５の膨らみ部Ｅを
所定の小さく滑らかな形状のものとすることができると
ともに、パリの発生を防止することができるため、その
後に芯金１表面に軟質材を射出成形によって被覆する際
、軟質材の流動性が良く、成形不良が発生することがな
い。また、従来行われていたパリを除去するパリ取り作
業が不要となる。As described above, according to this embodiment, the bulge E of the welded part 5 can be made into a predetermined small and smooth shape without affecting the strength of the welded part 5 of the core metal 1. At the same time, it is possible to prevent the occurrence of flakes, so when the surface of the core metal 1 is subsequently covered with a soft material by injection molding, the soft material has good fluidity and no molding defects occur. There is no longer a need for the deburring work that was previously performed.
本発明は上記実施例に限定されるのものではなく、発明
の趣旨を逸脱しない範囲で例えば以下のように任意に変
更することができる。The present invention is not limited to the above-mentioned embodiments, and can be arbitrarily modified as described below without departing from the spirit of the invention.
（１）第５図（ａ）、 （ｂ）に示すように、クラン
プ３の拡径部７の形状を断面略台形状に形成することが
できる。このように構成することによって、第６図に示
すように、溶接後の溶接部５の形状が平坦で滑らかなも
のとなり、ウレタン樹脂の流動性が一層向上する。(1) As shown in FIGS. 5(a) and 5(b), the expanded diameter portion 7 of the clamp 3 can be formed to have a substantially trapezoidal cross section. With this configuration, as shown in FIG. 6, the shape of the welded part 5 after welding becomes flat and smooth, and the fluidity of the urethane resin is further improved.
（２）第７図（ａ）、 （ｂ）に示すように、クラン
プ３の拡径部７の形状を、芯金１の非溶接部４と同一形
状にすることができる。このように構成することによっ
て、第８図に示すように、溶接後の溶接部５の形状が非
溶接部４と同一の外径となって滑らかとなり、ウレタン
樹脂の流動性は最も向上する。(2) As shown in FIGS. 7(a) and 7(b), the expanded diameter portion 7 of the clamp 3 can have the same shape as the non-welded portion 4 of the core metal 1. With this configuration, as shown in FIG. 8, the shape of the welded part 5 after welding has the same outer diameter as the non-welded part 4 and is smooth, and the fluidity of the urethane resin is most improved.
（３）溶接される材料の形状は、特に限定されず、リン
グ状以外に直線状であってもよく、また前記実施例のバ
イブ状以外に円柱状、角柱状等であってもよい。(3) The shape of the material to be welded is not particularly limited, and may be a linear shape other than a ring shape, and may also be a cylindrical shape, a prismatic shape, etc. other than the vibrator shape of the above embodiment.
（４）クランプ３は、前記実施例では二分割としたが、
三分割、四分割等でもよく、また溶接される材料の形状
が直線状の場合には、装着、脱着が可能となるので分割
しなくてもよい。(4) Although the clamp 3 was divided into two parts in the above embodiment,
It may be divided into three or four parts, and if the shape of the material to be welded is linear, it is not necessary to divide it because it can be attached and detached.
［発明の効果］
本発明の溶接体の製造方法によれば、溶接部の膨らみを
所定の形状にすることができるとともに、その膨らみ部
にパリの発生を防止することができるという効果を奏す
る。[Effects of the Invention] According to the method for manufacturing a welded body of the present invention, it is possible to form the bulge of the welded portion into a predetermined shape, and it is also possible to prevent the occurrence of flash in the bulge.
第１〜４図は本発明の実施例を示す図であって、第１図
は溶接部の構造を示す要部正面図、第２図（ａ）は二分
割された形状規制部材のうちの一方のものの正面図、第
２図（ｂ）は形状規制部材の側面図、第３図は溶接体を
示す部分断面図、第４図はリング部の芯金を示す正面図
、第５〜８図は本発明の別例を示す図であって、第５図
（ａ）は二分割された形状規制部材のうちの一方のもの
の正面図、第５図（ｂ）は形状規制部材の側面図、第６
図は溶接体を示す部分断面図、第７図（ａ）は二分割さ
れた形状規制部材のうちの一方のものの正面図、第７図
（ｂ）は形状規制部材の側面図、第８図は溶接体を示す
部分断面図、第９図及び第１０図は従来例を示す図であ
って、第９図は溶接部の構造を示す要部正面図、第１０
図は溶接体を示す部分断面図である。
ｌ・・・溶接される部材としての芯金、２・・・突き合
せ部、３・・・形状規制部材としてのクランプ、５・・
・溶接部1 to 4 are views showing embodiments of the present invention, in which FIG. 1 is a front view of the main part showing the structure of the welded part, and FIG. 2(b) is a side view of the shape regulating member, FIG. 3 is a partial sectional view showing the welded body, FIG. 4 is a front view showing the core metal of the ring part, and 5th to 8th The figures show another example of the present invention, in which FIG. 5(a) is a front view of one of the two divided shape regulating members, and FIG. 5(b) is a side view of the shape regulating member. , 6th
The figure is a partial sectional view showing the welded body, FIG. 7(a) is a front view of one of the two divided shape regulating members, FIG. 7(b) is a side view of the shape regulating member, and FIG. 8 9 is a partial sectional view showing a welded body, FIGS. 9 and 10 are views showing a conventional example, FIG. 9 is a front view of main parts showing the structure of a welded part, and FIG.
The figure is a partial sectional view showing a welded body. l... Core metal as a member to be welded, 2... Butt portion, 3... Clamp as a shape regulating member, 5...
·welded part
Claims (1)
、溶接後の溶接部（５）の外径を規制する形状規制部材
（３）を配置するとともに、突き合せ部（２）を突き合
わせて抵抗溶接することを特徴とする溶接体の製造方法
。1. A shape regulating member (3) for regulating the outer diameter of the welded part (5) after welding is placed on the outer periphery of the butted part (2) of the member (1) to be welded, and ) are brought together and resistance welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6273789A JPH02241675A (en) | 1989-03-15 | 1989-03-15 | Manufacture of welded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6273789A JPH02241675A (en) | 1989-03-15 | 1989-03-15 | Manufacture of welded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02241675A true JPH02241675A (en) | 1990-09-26 |
Family
ID=13208996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6273789A Pending JPH02241675A (en) | 1989-03-15 | 1989-03-15 | Manufacture of welded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02241675A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0699286A (en) * | 1991-02-26 | 1994-04-12 | High Frequency Heattreat Co Ltd | High strength one turn auxiliary reinforcing bar and electrode of welding machine for manufacturing the same |
| WO1999017904A1 (en) * | 1997-10-02 | 1999-04-15 | Evg Entwicklungs- U. Verwertungs-Gesellschaft Mbh | Method and device for butt-welding wire-shaped materials |
| JP2018075614A (en) * | 2016-11-10 | 2018-05-17 | 矢崎総業株式会社 | Joining method of electric wire |
-
1989
- 1989-03-15 JP JP6273789A patent/JPH02241675A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0699286A (en) * | 1991-02-26 | 1994-04-12 | High Frequency Heattreat Co Ltd | High strength one turn auxiliary reinforcing bar and electrode of welding machine for manufacturing the same |
| WO1999017904A1 (en) * | 1997-10-02 | 1999-04-15 | Evg Entwicklungs- U. Verwertungs-Gesellschaft Mbh | Method and device for butt-welding wire-shaped materials |
| JP2018075614A (en) * | 2016-11-10 | 2018-05-17 | 矢崎総業株式会社 | Joining method of electric wire |
| CN108075240A (en) * | 2016-11-10 | 2018-05-25 | 矢崎总业株式会社 | The joint method of electric wire |
| US11114825B2 (en) | 2016-11-10 | 2021-09-07 | Yazaki Corporation | Joining method of electric wires |
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