JP2016068094A - Electric welding device - Google Patents

Electric welding device Download PDF

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JP2016068094A
JP2016068094A JP2014197348A JP2014197348A JP2016068094A JP 2016068094 A JP2016068094 A JP 2016068094A JP 2014197348 A JP2014197348 A JP 2014197348A JP 2014197348 A JP2014197348 A JP 2014197348A JP 2016068094 A JP2016068094 A JP 2016068094A
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electrode
auxiliary member
guide
auxiliary
electric welding
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JP6338151B2 (en
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健輔 坂井
Kensuke Sakai
健輔 坂井
坂本 登
Noboru Sakamoto
登 坂本
計二 中村
Keiji Nakamura
計二 中村
顕子 稲見
Akiko Inami
顕子 稲見
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Subaru Corp
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Fuji Heavy Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an electric welding device capable of achieving joining at a position where joining strength is not decreased or hardly decreased when the joining is carried out through an auxiliary member.SOLUTION: An electric welding device is configured to join a first member which contains a first material and has a through hole and a second member which contains a second material different from the first material together through an auxiliary member having an insert part containing a third material weldable to the second material and inserted into the through hole and a flange formed to a large diameter at one end part of the insert part, and comprises an electrode which can move to and away from the auxiliary member and can supply electricity to between the second member and auxiliary member, and a guide which can abut on the auxiliary member before the electrode abuts to restrict a forward/backward moving direction of the electrode.SELECTED DRAWING: Figure 4

Description

本発明は、電気溶接装置に関する。   The present invention relates to an electric welding apparatus.

従来において、例えばアルミニウム合金押出形材と鋼製部材との接合体を形成する際に、頭部及び軸部から成る鋼製ピアスメタルが押出形材に打ち込まれ、更にピアスメタルの頭部側と鋼製部材側とからそれぞれ電極を当接させてスポット溶接する形成方法が知られている(特許文献1の請求項1、請求項8、[0062]〜[0065]、図7及び図8参照。)。   Conventionally, for example, when forming a joined body of an aluminum alloy extruded shape and a steel member, a steel pierce metal composed of a head and a shaft is driven into the extruded shape, and further, the head side of the pierce metal and A forming method in which electrodes are brought into contact with each other from the steel member side and spot welding is known (see claims 1, 8, [0062] to [0065] of FIGS. 7 and 8). .)

特開2013−022622号公報JP2013-022622A

しかしながら、ピアスメタル等の補助部材の中心からずれた位置において電極が当接、加圧及び通電される可能性があった。補助部材の中心からずれた位置において接合作業がなされると、接合強度が低下することがある。   However, there is a possibility that the electrode contacts, pressurizes and energizes at a position shifted from the center of the auxiliary member such as the piercing metal. If the joining operation is performed at a position shifted from the center of the auxiliary member, the joining strength may be lowered.

よって、本発明が解決しようとする課題は、補助部材を介して接合を行う場合に、接合強度を低下させない又は低下させ難い位置において接合可能な電気溶接装置を提供することである。   Therefore, the problem to be solved by the present invention is to provide an electric welding apparatus that can be joined at a position where the joining strength is not lowered or hardly lowered when joining is performed via an auxiliary member.

前記課題を解決するための手段として、本発明に係る電気溶接装置は、第1材料を含有して貫通孔を有する第1部材と、第1材料とは異なる第2材料を含有する第2部材とを、第2材料に溶接可能な第3材料を含有して貫通孔に挿入される挿入部と、該挿入部の一端部において径が大きく形成されるフランジとを有する補助部材を介して接合する電気溶接装置であって、補助部材に向って進退可能であり、第2部材と補助部材との間に通電可能な電極と、電極が当接する前に補助部材に当接して電極の進退方向を規制可能なガイドと、を備える。   As means for solving the problems, an electric welding apparatus according to the present invention includes a first member containing a first material and having a through hole, and a second member containing a second material different from the first material. Are joined via an auxiliary member having a third material that can be welded to the second material and inserted into the through-hole, and a flange having a large diameter at one end of the insertion portion. An electric welding device that can move forward and backward toward the auxiliary member and can be energized between the second member and the auxiliary member, and the electrode advancing and retreating by contacting the auxiliary member before contacting the electrode And a guide capable of regulating.

本発明に係る電気溶接装置において、ガイドにより進退方向を規制された電極が、第2部材と補助部材とに当接して通電することが好ましい。   In the electric welding apparatus according to the present invention, it is preferable that the electrode whose forward / backward direction is regulated by the guide is in contact with the second member and the auxiliary member to energize.

本発明に係る電気溶接装置において、ガイドが補助部材に当接する際に電極は固定状態から可動状態に切り換えられることが好ましい。   In the electric welding apparatus according to the present invention, it is preferable that the electrode is switched from the fixed state to the movable state when the guide contacts the auxiliary member.

本発明に係る電気溶接装置において、ガイドは電極の周りに少なくとも2つ設けられる挟持部材であり、ガイドが補助部材のフランジを挟むことにより、電極の進退方向が規制されることが好ましい。   In the electric welding apparatus according to the present invention, it is preferable that at least two guides are provided around the electrodes, and that the guides restrict the forward and backward directions of the electrodes by sandwiching the flanges of the auxiliary members.

本発明に係る電気溶接装置において、ガイドは、電極の周りに少なくとも2つ設けられ、各一端部に移動方向に沿った力を受けると屈曲する屈曲部材であり、ガイドが第1部材に近付く方向に移動すると、ガイドの各一端部が第1部材を摺動し、各一端部間の距離が小さくなって補助部材のフランジを挟むことにより、電極の進退方向が規制されることが好ましい。   In the electric welding apparatus according to the present invention, at least two guides are provided around the electrode, and are bending members that bend when receiving a force along the moving direction at each one end, and the direction in which the guide approaches the first member It is preferable that each end portion of the guide slides on the first member and the distance between the one end portions is reduced to sandwich the flange of the auxiliary member, thereby restricting the advancing / retreating direction of the electrode.

本発明に係る電気溶接装置において、ガイドは、電極を囲んで設けられ、又は電極の周りに少なくとも2つ設けられ、第1部材側の端部が電極に向ってかつ第1部材から離れる方向に延在する突出部を有するテーパ部材であり、ガイドが第1部材に近付く方向に移動すると、ガイドの突出部が補助部材のフランジの周縁部を摺動することにより、電極の進退方向が規制されることが好ましい。   In the electric welding apparatus according to the present invention, the guide is provided so as to surround the electrode, or at least two guides are provided around the electrode, and the end on the first member side faces the electrode and is away from the first member. This is a taper member having a protruding portion that extends, and when the guide moves in a direction approaching the first member, the protruding portion of the guide slides on the peripheral edge of the flange of the auxiliary member, thereby restricting the advancing and retreating direction of the electrode. It is preferable.

本発明によると、ガイドが補助部材に当接することによって電極の進退方向の規制が可能である。よって、補助部材を介した接合において、進退方向が規制された電極によって接合強度を低下させない又は低下させ難い位置で接合が可能な電気溶接装置を提供することができる。   According to the present invention, the electrode can be regulated in the advancing / retreating direction by the guide coming into contact with the auxiliary member. Therefore, in the joining via the auxiliary member, it is possible to provide an electric welding apparatus capable of joining at a position where the joining strength is not lowered or hardly lowered by the electrode whose forward / backward direction is regulated.

図1は、本発明に係る電気溶接装置を用いることのできる車両を示す斜視図である。FIG. 1 is a perspective view showing a vehicle in which an electric welding apparatus according to the present invention can be used. 図2は、図1のA部分の断面概略図である。FIG. 2 is a schematic cross-sectional view of a portion A in FIG. 図3は、車両の製造工程を示すフローチャートである。FIG. 3 is a flowchart showing a vehicle manufacturing process. 図4は、本発明に係る電気溶接装置の一実施形態を示す斜視図である。FIG. 4 is a perspective view showing an embodiment of the electric welding apparatus according to the present invention. 図5は、図4に示す電気溶接装置を駆動させた状態を示す斜視図である。FIG. 5 is a perspective view showing a state in which the electric welding apparatus shown in FIG. 4 is driven. 図6は、図5に示す電気溶接装置を更に駆動させた状態を示す斜視図である。FIG. 6 is a perspective view showing a state in which the electric welding apparatus shown in FIG. 5 is further driven. 図7は、挟持部材の先端部と補助部材のフランジとを平面視した模式図である。図7(A)は駆動前の挟持部材の先端部を示す模式図であり、図7(B)は駆動中の挟持部材の先端部を示す模式図であり、図7(C)は駆動後の挟持部材の先端部を示す模式図である。FIG. 7 is a schematic view of the front end portion of the clamping member and the flange of the auxiliary member as viewed in plan. FIG. 7A is a schematic diagram showing the tip of the clamping member before driving, FIG. 7B is a schematic diagram showing the tip of the clamping member being driven, and FIG. 7C is after driving. It is a schematic diagram which shows the front-end | tip part of this clamping member. 図8は、第1電極及び摺動部材の先端部と、第1部材、第2部材及び補助部材を側方視した一部断面概略図である。図8(A)は駆動前の摺動部材と接合される部材とを示す断面概略図であり、図8(B)は駆動中の摺動部材と接合される部材とを示す断面概略図であり、図8(C)は駆動後の摺動部材と接合される部材とを示す断面概略図である。FIG. 8 is a partial cross-sectional schematic view of the first electrode and the distal end of the sliding member, and the first member, the second member, and the auxiliary member viewed from the side. FIG. 8A is a schematic cross-sectional view showing a sliding member before being driven and a member to be joined, and FIG. 8B is a schematic cross-sectional view showing a member to be joined to the sliding member being driven. FIG. 8C is a schematic cross-sectional view showing the driven sliding member and the member to be joined. 図9は、第1電極及びテーパ部材の先端部と、第1部材、第2部材及び補助部材を側方視した一部断面概略図である。図9(A)は駆動前のテーパ部材と接合される部材とを示す断面概略図であり、図9(B)は駆動中のテーパ部材と接合される部材とを示す断面概略図であり、図9(C)は駆動後のテーパ部材と接合される部材とを示す断面概略図である。FIG. 9 is a partial cross-sectional schematic view of the first electrode, the tip of the taper member, the first member, the second member, and the auxiliary member as viewed from the side. FIG. 9A is a schematic cross-sectional view showing a taper member and a member to be joined before driving, and FIG. 9B is a schematic cross-sectional view showing a member to be joined to the taper member being driven, FIG. 9C is a schematic cross-sectional view showing the taper member after driving and the member to be joined.

本発明に係る電気溶接装置の一実施形態について、図面を参照しつつ説明する。   An embodiment of an electric welding apparatus according to the present invention will be described with reference to the drawings.

(1)車両における本発明の使用可能部位
本発明に係る電気溶接装置は、例えば車両のボディ部分及びルーフ部分等を製造する際に、異なる種類の金属間の溶接に適用することができる。本発明に係る電気溶接装置の一実施形態を適用可能な部位の一例として、図1に車体の上部及び側部となる構造体を示した。
(1) Usable part of the present invention in a vehicle The electric welding apparatus according to the present invention can be applied to welding between different types of metals when manufacturing, for example, a vehicle body part and a roof part. As an example of a part to which an embodiment of the electric welding apparatus according to the present invention can be applied, a structure serving as an upper part and a side part of a vehicle body is shown in FIG.

図1に示すように、前後方向に延在する表皮部材のサイドシル901と、サイドシル901の前端部から上方に延在し、フロントガラスの側方を支持するヒンジピラー902と、サイドシル901の中央部から上方に延在するセンターピラー903とが一体的に形成されている。サイドシル901、ヒンジピラー902、及びセンターピラー903は、車体の上部及び側部の枠体であり、各枠体の間にはボディ部分及びルーフ部分等を形成する金属板、及びガラス等が溶接又は嵌め込まれている。例えばヒンジピラー902と、ルーフ部分を形成するルーフパネル904とは溶接により固定される。   As shown in FIG. 1, a side sill 901 of a skin member extending in the front-rear direction, a hinge pillar 902 that extends upward from the front end of the side sill 901 and supports the side of the windshield, and a center part of the side sill 901 A center pillar 903 extending upward is integrally formed. The side sill 901, the hinge pillar 902, and the center pillar 903 are upper and side frames of the vehicle body, and a metal plate, glass, and the like that form a body portion and a roof portion are welded or fitted between the frames. It is. For example, the hinge pillar 902 and the roof panel 904 forming the roof portion are fixed by welding.

また、図1のA部分の断面概略図である図2に示すように、ヒンジピラー902における車外側の表皮部分と、ルーフパネル904とが接合されている。
なお、図1及び図2には図示していないが、ヒンジピラー902の内部には、車外側の表皮部材であるアウタパネル、補強用の中間部材であるレインフォースメント、車内側の表皮部材であるインナパネル等が設けられている。
Further, as shown in FIG. 2 which is a schematic cross-sectional view of a portion A in FIG. 1, the outer skin portion of the hinge pillar 902 and the roof panel 904 are joined.
Although not shown in FIGS. 1 and 2, the hinge pillar 902 includes an outer panel that is a skin member on the outside of the vehicle, a reinforcement that is a reinforcing intermediate member, and an inner that is a skin member on the inside of the vehicle. Panels are provided.

ヒンジピラー902の表皮部分と、ルーフパネル904とは、溶接によって接合されるが、それぞれが異なる金属で形成されていることが多く、直接溶接しようとしても高い溶接強度を確保することが困難であった。
よって、本実施形態に係る電気溶接装置は、例えばヒンジピラー902とルーフパネル904との補助部材4を介した溶接に適用することができる。
なお、図2のヒンジピラー902とルーフパネル904との接合部位に配置される補助部材4については、後述する。
The skin portion of the hinge pillar 902 and the roof panel 904 are joined by welding, but each is often formed of a different metal, and it is difficult to ensure high welding strength even if direct welding is attempted. .
Therefore, the electric welding apparatus according to the present embodiment can be applied to welding via the auxiliary member 4 between the hinge pillar 902 and the roof panel 904, for example.
The auxiliary member 4 disposed at the joint portion between the hinge pillar 902 and the roof panel 904 in FIG. 2 will be described later.

(2)車両製造時における本発明の適用時期
本発明に係る電気溶接装置は、例えばプレス成形された車両のボディ部分及びルーフ部分等と成る部品を溶接する際に使用することができる。図3には、車両の製造工程を示すフローチャートを示した。
(2) Application time of the present invention at the time of vehicle manufacture The electric welding apparatus according to the present invention can be used, for example, when welding parts such as a press-molded vehicle body part and roof part. FIG. 3 is a flowchart showing the vehicle manufacturing process.

図3に示すように、車両の製造工程としては、例えば部品プレス成形工程S1、車体溶接工程S2、車体塗装工程S3、及び組付工程S4を挙げることができる。部品プレス成形工程S1は、ボディ部分及びルーフ部分となる部品をそれぞれの形状にプレス成形する工程である。車体溶接工程S2は、部品プレス成形工程S1でプレス成形された複数の部品を集めて溶接する工程である。車体塗装工程S3は、溶接されて外形がある程度完成したボディ部分及びルーフ部分等の外面を塗装する工程である。組付工程S4は、塗装体にエンジン、タイヤ、補機、及び内装材等を取り付ける工程である。   As shown in FIG. 3, examples of the vehicle manufacturing process include a component press molding process S1, a vehicle body welding process S2, a vehicle body painting process S3, and an assembly process S4. The part press molding step S1 is a step of press molding the parts to be the body part and the roof part into respective shapes. The vehicle body welding step S2 is a step of collecting and welding a plurality of parts press-formed in the part press-forming step S1. The vehicle body painting step S3 is a step of painting outer surfaces such as a body part and a roof part, which have been welded to complete the outer shape to some extent. Assembly process S4 is a process of attaching an engine, tires, auxiliary equipment, interior materials, and the like to the painted body.

本実施形態に係る電気溶接装置は、車体溶接工程S2の溶接時に適用可能である。
なお、補助部材4は予め接合部材の一方に打ち込んでおく必要がある。補助部材4の打ち込みは、部品プレス成形工程S1のプレス成形前から車体溶接工程S2の溶接前までの間に行うことができる。補助部材4を打ち込む部位が部品プレス成形工程S1を経ても変形しない部位である場合は、部品プレス成形工程S1の前から補助部材4を打ち込んでおくことができる。逆に、補助部材4を打ち込む部位が部品プレス成形工程S1によって変形する部位である場合は、部品プレス成形工程S1の後から車体溶接工程S2までの間に補助部材4が打ち込まれる。
The electric welding apparatus according to this embodiment can be applied during welding in the vehicle body welding process S2.
The auxiliary member 4 needs to be driven into one of the joining members in advance. The auxiliary member 4 can be driven in before the press molding in the component press molding step S1 and before the welding in the vehicle body welding step S2. If the portion into which the auxiliary member 4 is driven is a portion that does not deform even after the component press molding step S1, the auxiliary member 4 can be driven in from before the component press molding step S1. On the contrary, when the site | part which drives in the auxiliary member 4 is a site | part which deform | transforms by component press molding process S1, the auxiliary member 4 is driven between after the part press molding process S1 until vehicle body welding process S2.

(3)電気溶接装置
図4〜図6には、本発明に係る電気溶接装置の一実施形態が斜視図として示されている。なお、図4には初期状態の電気溶接装置1を示し、図5及び図6には駆動状態の電気溶接装置1を示している。
(3) Electric Welding Device FIGS. 4 to 6 show perspective views of an embodiment of the electric welding device according to the present invention. 4 shows the electric welding apparatus 1 in an initial state, and FIGS. 5 and 6 show the electric welding apparatus 1 in a driving state.

先ず、電気溶接装置1は、図4に示すように、第1部材2と第2部材3とを補助部材4を介して接合する場合に用いられる。   First, as shown in FIG. 4, the electric welding apparatus 1 is used when the first member 2 and the second member 3 are joined via the auxiliary member 4.

第1部材2は、第1材料を含有し、貫通孔5を有する板状部材である。本実施形態において貫通孔5は円形状を成しているが、特に限定されず、楕円形、矩形及び多角形等の形状を採用し得る。また、貫通孔5の径についても特に制限は無く、接合される部材に要求される強度、靭性及び弾性等に応じて決定されれば良い。   The first member 2 is a plate-like member that contains the first material and has the through holes 5. In the present embodiment, the through hole 5 has a circular shape, but is not particularly limited, and may be an ellipse, a rectangle, a polygon, or the like. Moreover, there is no restriction | limiting in particular also about the diameter of the through-hole 5, What is necessary is just to be determined according to the intensity | strength, toughness, elasticity, etc. which are requested | required of the member joined.

第2部材3は、第1材料とは異なる第2材料を含有する板状部材である。本実施形態においては、第2部材3は、貫通孔5のような補助部材4の係合する部位を有していないが、接合前の各部材の位置決めを容易にするために凹部等を形成しておいても良い。   The second member 3 is a plate-like member containing a second material different from the first material. In the present embodiment, the second member 3 does not have a portion for engaging with the auxiliary member 4 such as the through-hole 5, but a recess or the like is formed to facilitate positioning of each member before joining. You can keep it.

補助部材4は、第2材料に溶接可能な第3材料を含有し、挿入部41とフランジ42とを有する部材である。
挿入部41は、貫通孔5に挿入される部位である。挿入部41は、中心軸線に沿った大きさ、径及び断面形状が貫通孔5に合わせて形成されるのが好ましい。本実施形態において挿入部41は、中心軸線に沿った大きさが第1部材2の厚みと略同一であり、外径が貫通孔5の内径と略同一であり、全体として円盤形状又は円柱形状に形成されている。
また、フランジ42は、挿入部41の一端部において径が大きく形成されて成り、円盤形状を有する部位である。フランジ42は、第1部材2と第2部材3との接合後に、第2部材3を第1部材2に対して押さえ付ける部位であるので、接合後に第2部材3を保持可能である限り該フランジ42の径及び形状は限定されない。
The auxiliary member 4 is a member that includes a third material that can be welded to the second material, and includes an insertion portion 41 and a flange 42.
The insertion part 41 is a part that is inserted into the through hole 5. The insertion portion 41 is preferably formed so that the size, the diameter, and the cross-sectional shape along the central axis match the through hole 5. In the present embodiment, the insertion portion 41 has a size along the central axis that is substantially the same as the thickness of the first member 2, and an outer diameter that is substantially the same as the inner diameter of the through hole 5. Is formed.
Further, the flange 42 is a part having a disk shape formed with a large diameter at one end of the insertion part 41. The flange 42 is a part that presses the second member 3 against the first member 2 after the first member 2 and the second member 3 are joined, so that the second member 3 can be held as long as the second member 3 can be held after the joining. The diameter and shape of the flange 42 are not limited.

(3−1)各部材の材料
ここで、第1部材2、第2部材3及び補助部材4の各材料について説明する。
第1部材2の材料である第1材料と、第2部材3の材料である第2材料との組合せとしては、溶接が困難な材料の組合せ、又は、溶接しても例えば車両用部品として使用に耐え得る溶接強度を得ることが困難な材料の組合せが挙げられる。具体的には、第1材料及び第2材料の組合せとして、例えば一方がアルミニウム、アルミニウム系材料、マグネシウム、マグネシウム系材料又は繊維強化プラスチック等であり、他方が鉄又は鉄系材料である組合せ等を採用することができる。
補助部材4の材料である第3材料は、第2材料に溶接可能な材料、好ましくは車両用部品としての使用に耐え得る溶接強度を以って第2材料に溶接可能な材料である。第3材料は、第2材料が決定されると、第2材料に応じて適当な材料が決定される。
電気溶接装置1を用いて接合される異材接合体を車両用部品として用いる場合、第1材料、第2材料及び第3材料の組合せとして好ましいのは、第1材料がアルミニウム、アルミニウム系材料、マグネシウム、マグネシウム系材料又は繊維強化プラスチックであり、第2材料及び第3材料が鉄又は鉄系材料である。
(3-1) Material of each member Here, each material of the 1st member 2, the 2nd member 3, and the auxiliary member 4 is demonstrated.
The combination of the first material that is the material of the first member 2 and the second material that is the material of the second member 3 is a combination of materials that are difficult to weld, or is used as, for example, a vehicle component even after welding. And a combination of materials in which it is difficult to obtain a welding strength that can withstand. Specifically, as a combination of the first material and the second material, for example, a combination in which one is aluminum, an aluminum-based material, magnesium, a magnesium-based material, fiber-reinforced plastic, or the like, and the other is iron or an iron-based material. Can be adopted.
The third material as the material of the auxiliary member 4 is a material that can be welded to the second material, preferably a material that can be welded to the second material with a welding strength that can withstand use as a vehicle component. As the third material, when the second material is determined, an appropriate material is determined according to the second material.
When the dissimilar material joined body joined using the electric welding apparatus 1 is used as a vehicle part, the first material is preferably aluminum, aluminum-based material, magnesium, as a combination of the first material, the second material, and the third material. , A magnesium-based material or a fiber-reinforced plastic, and the second material and the third material are iron or an iron-based material.

なお、上述の溶接が困難であること、及び、溶接が可能であることというのは、例えば通電を伴う溶接、具体的には車両用部品の製造に多く用いられるスポット溶接を電気溶接装置1によって溶接する場合についての、溶接の可否を意味している。つまり、第1材料と第2材料とは、通電を伴う溶接が困難であり、第2材料と第3材料とは通電を伴う溶接が可能である。   Note that the above-described welding is difficult and that welding is possible is, for example, welding with energization, specifically spot welding often used for manufacturing vehicle parts, by the electric welding apparatus 1. It means whether or not welding is possible when welding. That is, the first material and the second material are difficult to weld with energization, and the second material and the third material can be welded with energization.

(3−2)電気溶接装置の概要
図4に示す電気溶接装置1を用いる準備作業として、第1部材2、第2部材3及び補助部材4を配置する。具体的には、第1部材2の貫通孔5に補助部材4の挿入部41を挿入し、更に第1部材2における補助部材4のフランジ42が係合する面とは反対面に対して第2部材3が面接触するように配置される。このとき、第1部材2及び第2部材3は位置決めされ、第2部材3において溶接される部位に挿入部41の先端面が当接している。配置された第1部材2及び第2部材3は、相互にずれないように、クランプ等の保持部材によって固定しておくのが好ましい。
(3-2) Outline of Electric Welding Device As a preparatory work using the electric welding device 1 shown in FIG. 4, the first member 2, the second member 3 and the auxiliary member 4 are arranged. Specifically, the insertion portion 41 of the auxiliary member 4 is inserted into the through-hole 5 of the first member 2, and the first member 2 is further away from the surface opposite to the surface engaged with the flange 42 of the auxiliary member 4. The two members 3 are arranged so as to be in surface contact. At this time, the first member 2 and the second member 3 are positioned, and the distal end surface of the insertion portion 41 is in contact with the portion to be welded in the second member 3. The arranged first member 2 and second member 3 are preferably fixed by a holding member such as a clamp so as not to be displaced from each other.

図4に示すように、電気溶接装置1は、第1電極E1と、第2電極E2と、挟持部材6とを備える。   As shown in FIG. 4, the electric welding apparatus 1 includes a first electrode E <b> 1, a second electrode E <b> 2, and a clamping member 6.

第1電極E1及び第2電極E2は、第2部材3と補助部材4との間に通電可能な部材である。第1部材2等よりも図4における上方に第1電極E1が配置され、下方に第2電極E2が配置されている。第1電極E1と第2電極E2との間に、第2部材3及び補助部材4を挟み込んで通電することによって、第2部材3及び補助部材4に抵抗熱を発生させて両部材の接触部位において溶着することができる。
本実施形態では、図4に示す通電前の初期状態において第2電極E2が第2部材3に予め当接して配置されている。
なお、第1電極E1及び第2電極E2は、本発明に係る電気溶接装置における電極の一例である。
The first electrode E1 and the second electrode E2 are members that can be energized between the second member 3 and the auxiliary member 4. The first electrode E1 is disposed above the first member 2 and the like in FIG. 4, and the second electrode E2 is disposed below. Between the first electrode E1 and the second electrode E2, the second member 3 and the auxiliary member 4 are sandwiched and energized, thereby generating resistance heat in the second member 3 and the auxiliary member 4 to contact portions of both members. Can be welded.
In the present embodiment, the second electrode E2 is disposed in contact with the second member 3 in the initial state before energization shown in FIG.
The first electrode E1 and the second electrode E2 are examples of electrodes in the electric welding apparatus according to the present invention.

挟持部材6は、補助部材4に当接することによって第1電極E1の進退方向を規制することができる部材である。具体的には、挟持部材6は、第1挟持部材61と、第2挟持部材62とを有する。また、挟持部材6は、第1回動部材81及び第2回動部材82を介してガイド基部7に取付けられている。第1挟持部材61は第1回動部材81から下方に延在し、第2挟持部材62は第2回動部材82から下方に延在している。
なお、挟持部材6は、本発明に係る電気溶接装置におけるガイドの一例である。
The clamping member 6 is a member that can regulate the advancing / retreating direction of the first electrode E <b> 1 by contacting the auxiliary member 4. Specifically, the clamping member 6 includes a first clamping member 61 and a second clamping member 62. The clamping member 6 is attached to the guide base 7 via a first rotating member 81 and a second rotating member 82. The first clamping member 61 extends downward from the first rotating member 81, and the second clamping member 62 extends downward from the second rotating member 82.
The pinching member 6 is an example of a guide in the electric welding apparatus according to the present invention.

第1挟持部材61及び第2挟持部材62は、第1回動部材81及び第2回動部材82からそれぞれ延在している部位が略矩形柱形状を成し、図4に示すX軸及びZ軸によって形成される平面と略平行になるように各先端部が屈曲している。なお、本実施形態においては、第1部材2及び第2部材3も、X軸及びZ軸を含む平面と略平行になるように配置されている。
また、第1挟持部材61及び第2挟持部材62における各先端部の対向する部位は、切り欠かれて成る当接部91を有する。
In the first clamping member 61 and the second clamping member 62, the portions extending from the first rotating member 81 and the second rotating member 82 each have a substantially rectangular column shape, and the X axis and the X axis shown in FIG. Each tip is bent so as to be substantially parallel to the plane formed by the Z axis. In the present embodiment, the first member 2 and the second member 3 are also disposed so as to be substantially parallel to a plane including the X axis and the Z axis.
Moreover, the site | part which the each front-end | tip part in the 1st clamping member 61 and the 2nd clamping member 62 opposes has the contact part 91 formed by notching.

ガイド基部7は、適宜のシリンダ、ピストン及びモータ等の駆動部材(図示せず)によって、Y軸方向に沿って往復動可能な部材である。ガイド基部7がY軸方向に沿って往復動することにより、ガイド基部7に取付けられた第1挟持部材61、第2挟持部材62、第1回動部材81及び第2回動部材82がY軸方向に沿って往復動する。   The guide base 7 is a member that can reciprocate along the Y-axis direction by a drive member (not shown) such as an appropriate cylinder, piston, and motor. As the guide base 7 reciprocates along the Y-axis direction, the first clamping member 61, the second clamping member 62, the first rotating member 81, and the second rotating member 82 attached to the guide base 7 are Y Reciprocates along the axial direction.

第1回動部材81及び第2回動部材82は、適宜のモータ等を内蔵する筒状部材であり、Y軸に沿った中心軸の周りをそれぞれ独立して回動可能である。第1回動部材81が回動することによって、第1挟持部材61がY軸に沿った中心軸の周りを回動することができる。また、第2回動部材82が回動することによって、第2挟持部材62がY軸に沿った軸線を中心として回動することができる。
第1回動部材81と第2回動部材82とが相互に逆方向に回動することによって、第1挟持部材61と第2挟持部材62との間隔が増減することになる。第1挟持部材61と第2挟持部材62との間隔が小さくなると、各先端部に形成される当接部91が補助部材4のフランジ42の周縁部に当接することになる。よって、挟持部材6は、当接部91がフランジ42に当接することによって、補助部材4を挟持することができる。
The first rotation member 81 and the second rotation member 82 are cylindrical members that incorporate appropriate motors and the like, and can be independently rotated around the central axis along the Y axis. As the first rotating member 81 rotates, the first clamping member 61 can rotate around the central axis along the Y axis. Moreover, the 2nd clamping member 62 can be rotated centering | focusing on the axis line along a Y-axis by the 2nd rotation member 82 rotating.
As the first rotating member 81 and the second rotating member 82 rotate in the opposite directions, the distance between the first clamping member 61 and the second clamping member 62 increases or decreases. When the distance between the first clamping member 61 and the second clamping member 62 is reduced, the abutting portions 91 formed at the respective leading end portions abut against the peripheral edge portion of the flange 42 of the auxiliary member 4. Therefore, the clamping member 6 can clamp the auxiliary member 4 when the contact portion 91 contacts the flange 42.

本実施形態においては、第1電極E1とガイド基部7とは、それぞれ独立してY軸に沿って往復動可能となっている。
また、第1電極E1とガイド基部7とは、図4には図示しない上方において連結されている。これにより、挟持部材6を介してガイド基部7が例えばX軸方向及びZ軸方向への応力を受けて移動する場合、ガイド基部7に連結される第1電極E1もガイド基部7の移動方向と同一方向、及び移動距離と同一距離だけ移動することになる。例えば挟持部材6が補助部材4を挟持した際に、第1回動部材81又は第2回動部材82のトルクによって、第1電極E1及びガイド基部7はX軸及びZ軸を含む平面上において種々の方向に移動可能である。
In the present embodiment, the first electrode E1 and the guide base portion 7 can independently reciprocate along the Y axis.
Further, the first electrode E1 and the guide base 7 are connected in the upper direction (not shown in FIG. 4). As a result, when the guide base 7 is moved by receiving stress in the X-axis direction and the Z-axis direction, for example, via the clamping member 6, the first electrode E <b> 1 connected to the guide base 7 also has the moving direction of the guide base 7. It moves by the same distance as the moving distance in the same direction. For example, when the clamping member 6 clamps the auxiliary member 4, the first electrode E <b> 1 and the guide base 7 are on the plane including the X axis and the Z axis by the torque of the first rotating member 81 or the second rotating member 82. It can move in various directions.

次に、図5及び図6を参照しつつ、電気溶接装置1の使用方法、各部材の動作及びその作用について説明する。   Next, with reference to FIG. 5 and FIG. 6, the method of using the electric welding apparatus 1, the operation of each member, and the operation thereof will be described.

先ず、図4に示した初期状態において、上述したように第1部材2、第2部材3及び補助部材4を所定位置に配置し、第1部材2及び第2部材3をクランプ等によって固定しておく。また、補助部材4のフランジ42が第1挟持部材61と第2挟持部材62との間に収まる程度に、第1回動部材81及び第2回動部材82を回動させて挟持部材6の開き度合いを調節しておくのが好ましい。   First, in the initial state shown in FIG. 4, as described above, the first member 2, the second member 3, and the auxiliary member 4 are arranged at predetermined positions, and the first member 2 and the second member 3 are fixed by a clamp or the like. Keep it. In addition, the first rotating member 81 and the second rotating member 82 are rotated so that the flange 42 of the auxiliary member 4 fits between the first holding member 61 and the second holding member 62. It is preferable to adjust the degree of opening.

次いで、ガイド基部7をY軸に沿って図5における下方に移動させる。ガイド基部7は、挟持部材6が補助部材4のフランジ42を挟持可能な位置まで降下すれば良く、降下の停止形態は特に制限されない。ガイド基部7の降下形態としては、例えば挟持部材6の先端部と第1部材2との距離を計測した上で降下距離を予め設定されて降下が自動で停止するようになっている形態、挟持部材6の先端部が第1部材2に当接することによってガイド基部7が第1部材2から受ける抗力をセンサ等によって検知し、降下を停止する形態、又は、作業者がガイド基部7を視認しつつ直接操作信号を入力することによってガイド基部7を降下させる形態等を挙げることができる。   Next, the guide base 7 is moved downward in FIG. 5 along the Y axis. The guide base portion 7 may be lowered to a position where the holding member 6 can hold the flange 42 of the auxiliary member 4, and the stopping form of the lowering is not particularly limited. As a lowering form of the guide base portion 7, for example, a form in which the lowering distance is set in advance after measuring the distance between the distal end portion of the holding member 6 and the first member 2, and the lowering is automatically stopped. A form in which the guide base 7 is detected by a sensor or the like when the tip end of the member 6 abuts against the first member 2 and the descent is stopped by the sensor or the like, or the operator visually recognizes the guide base 7. For example, the guide base 7 can be lowered by directly inputting an operation signal.

本実施形態においては、ガイド基部7を移動させて挟持部材6を第1部材2に接触させただけでは第1電極E1の進退方向の規制は完了していない。ここで、挟持部材6における当接部91を補助部材4のフランジ42に対して当接させる。具体的には、図5に示すように、第1回動部材81と第2回動部材82とを相互に逆方向に回動させることによって、第1挟持部材61と第2挟持部材62との間隔が狭まる。これにより、第1挟持部材61及び第2挟持部材62の各先端部において対向する部位に形成される当接部91が、フランジ42の周縁部を挟みこむようにして当接することができる。   In the present embodiment, the regulation of the forward / backward direction of the first electrode E1 is not completed simply by moving the guide base 7 and bringing the clamping member 6 into contact with the first member 2. Here, the contact portion 91 of the clamping member 6 is brought into contact with the flange 42 of the auxiliary member 4. Specifically, as shown in FIG. 5, by rotating the first rotating member 81 and the second rotating member 82 in opposite directions, the first holding member 61 and the second holding member 62 The interval of. Thereby, the contact part 91 formed in the opposing part in each front-end | tip part of the 1st clamping member 61 and the 2nd clamping member 62 can contact | abut so that the peripheral part of the flange 42 may be inserted | pinched.

当接部91がフランジ42を挟み込んで当接すると、第1電極E1の進退方向の規制が完了する。つまり、挟持部材6がフランジ42を挟持すると、フランジ42に対する挟持部材6の位置が固定される。挟持部材6の固定された位置に基づいて、ガイド基部7及び第1電極E1も溶接に好ましい位置に固定される。以上により、第1電極E1の進退方向が規制される。
進退方向が規制された第1電極E1のY軸に沿った中心軸線と、補助部材4の中心軸線と、第2電極E2の中心軸線とは、一致又は略一致する。
When the contact portion 91 is in contact with the flange 42 interposed therebetween, the regulation of the forward / backward direction of the first electrode E1 is completed. That is, when the clamping member 6 clamps the flange 42, the position of the clamping member 6 with respect to the flange 42 is fixed. Based on the position where the clamping member 6 is fixed, the guide base 7 and the first electrode E1 are also fixed at a position preferable for welding. Thus, the advance / retreat direction of the first electrode E1 is regulated.
The central axis along the Y axis of the first electrode E1 in which the advance / retreat direction is restricted, the central axis of the auxiliary member 4, and the central axis of the second electrode E2 are coincident or substantially coincide.

次いで、図6に示すように、進退方向の規制された第1電極E1をY軸に沿って図4における下方に移動させる。第1電極E1は、その先端部が補助部材4のフランジ42に当接するまで降下する。更に、電気溶接装置1を用いたスポット溶接は、第1電極E1を補助部材4におけるフランジ42の表面に圧接し、第2電極E2を第2部材3の表面に圧接すると共に、第2部材3と補助部材4との間に通電することにより達成される。これにより、第2部材3と補助部材4の先端面との接触部位が溶着する。よって、補助部材4が第2部材3に対して固定され、更にフランジ42によって第1部材2が保持された状態となるので、全体として第1部材2と第2部材3とが補助部材4を介して接合されたことになる。   Next, as shown in FIG. 6, the first electrode E <b> 1 whose forward / backward direction is restricted is moved downward in FIG. 4 along the Y axis. The first electrode E <b> 1 descends until the tip thereof contacts the flange 42 of the auxiliary member 4. Further, in spot welding using the electric welding apparatus 1, the first electrode E1 is pressed against the surface of the flange 42 of the auxiliary member 4, the second electrode E2 is pressed against the surface of the second member 3, and the second member 3 is pressed. This is achieved by energizing between the auxiliary member 4 and the auxiliary member 4. Thereby, the contact site | part of the 2nd member 3 and the front end surface of the auxiliary member 4 welds. Therefore, since the auxiliary member 4 is fixed to the second member 3 and the first member 2 is further held by the flange 42, the first member 2 and the second member 3 as a whole use the auxiliary member 4. It will be joined via.

本実施形態においては、図6に示すように、溶接の際に挟持部材6がフランジ42を挟持し続けているので、進退方向が規制された第1電極E1の位置がずれることが無い。挟持部材6は通電される補助部材4に当接しているので、例えば挟持部材6全体が絶縁及び耐熱材料で形成されている形態、又は、少なくとも挟持部材6における当接部91及び第2部材3との接触部位に絶縁部が設けられている形態であれば良い。   In the present embodiment, as shown in FIG. 6, since the clamping member 6 continues to clamp the flange 42 during welding, the position of the first electrode E1 in which the advancing / retreating direction is regulated does not shift. Since the holding member 6 is in contact with the auxiliary member 4 to be energized, for example, the entire holding member 6 is formed of an insulating and heat-resistant material, or at least the contact portion 91 and the second member 3 in the holding member 6. Any form may be used as long as an insulating portion is provided at the contact portion.

以上により、電気溶接装置1を使用した場合において、第1電極E1の進退方向の規制と溶接とが達成される。   As described above, when the electric welding apparatus 1 is used, the regulation and welding of the first electrode E1 in the forward / backward direction are achieved.

(4)電極の進退方向の規制
次に、図7を参照しつつ、図4〜6に示した電気溶接装置1の第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとが一致していない場合において、第1電極E1の進退方向の規制工程について詳述する。第1電極E1の中心軸線EY、及び、補助部材4の中心軸線4Yは、それぞれY軸に沿った仮想線である。図7において、軸線EYの位置は白抜きの円で示し、軸線4Yの位置は黒色の円で示す。
図7は、挟持部材6の先端部と補助部材4のフランジ42とを平面視した模式図である。図7(A)は駆動前の挟持部材6の先端部を示す模式図であり、図7(B)は駆動中の挟持部材6の先端部を示す模式図であり、図7(C)は駆動後の挟持部材6の先端部を示す模式図である。
(4) Restriction of Electrode Advance / Retreat Direction Next, referring to FIG. 7, the central axis EY of the first electrode E1 and the central axis 4Y of the auxiliary member 4 of the electric welding apparatus 1 shown in FIGS. In the case where it is not done, the regulation process in the forward / backward direction of the first electrode E1 will be described in detail. The center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4 are virtual lines along the Y axis, respectively. In FIG. 7, the position of the axis EY is indicated by a white circle, and the position of the axis 4Y is indicated by a black circle.
FIG. 7 is a schematic view of the front end portion of the clamping member 6 and the flange 42 of the auxiliary member 4 in plan view. FIG. 7A is a schematic diagram showing the tip of the clamping member 6 before driving, FIG. 7B is a schematic diagram showing the tip of the clamping member 6 during driving, and FIG. It is a schematic diagram which shows the front-end | tip part of the clamping member 6 after a drive.

図7(A)に示すように、本実施形態における当接部91は、平面視矩形の第1挟持部材61及び第2挟持部材62の先端部における対向する部位が、それぞれ三角形状に切欠かれることによって形成される縁部である。当接部91は、X軸及びZ軸に対して約45°傾斜して形成され、4方向に面する部位である。これにより、挟持部材6が補助部材4を挟持するだけで、X軸及びZ軸に対する第1電極E1の進退方向の規制が完了となる。
図7(A)に示す状態においては第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとが一致していない。この第1電極E1と補助部材4とがずれた状態でスポット溶接を行うと、第2部材3と補助部材4との間で十分な通電を実現することができず、結果として小さい溶着面積しか得ることができないことがある。これにより、所望の溶接強度を得ることが困難となる。よって、図7(B)及び図7(C)に示す第1電極E1の進退方向の規制が必要であり、かつ重要な作業となる。
As shown in FIG. 7A, in the contact portion 91 in the present embodiment, opposing portions at the front end portions of the first holding member 61 and the second holding member 62 that are rectangular in plan view are cut out in a triangular shape. It is the edge part formed by this. The contact portion 91 is formed at an inclination of about 45 ° with respect to the X axis and the Z axis, and is a portion facing in four directions. Thereby, the clamping of the first electrode E1 with respect to the X axis and the Z axis is completed only by the clamping member 6 clamping the auxiliary member 4.
In the state shown in FIG. 7A, the central axis EY of the first electrode E1 and the central axis 4Y of the auxiliary member 4 do not match. If spot welding is performed in a state where the first electrode E1 and the auxiliary member 4 are deviated from each other, sufficient energization cannot be realized between the second member 3 and the auxiliary member 4, resulting in a small welding area. There are things you can't get. Thereby, it becomes difficult to obtain a desired welding strength. Therefore, it is necessary to regulate the forward / backward direction of the first electrode E1 shown in FIGS. 7B and 7C, and this is an important operation.

次いで、図7(B)に示すように、第1挟持部材61及び第2挟持部材62が、相互に近付く方向にそれぞれ移動する。本実施形態においては、第1挟持部材61及び第2挟持部材62の移動速度は同一であることとする。
図7(A)に示したように、第1電極E1の進退方向が規制される前状態において、フランジ42の周縁部までの最短距離を比較すると、第2挟持部材62よりも第1挟持部材61がフランジ42に近い位置に配置されている。よって、第1挟持部材61及び第2挟持部材62がそれぞれ移動すると、図7(B)に示すように、第1挟持部材61が第2挟持部材62より先にフランジ42に対して当接することになる。
図7(B)に示す時点では、未だ第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとが一致していないので、第1電極E1の進退方向の規制は完了していない。
Next, as shown in FIG. 7B, the first clamping member 61 and the second clamping member 62 move in directions toward each other. In this embodiment, the moving speed of the 1st clamping member 61 and the 2nd clamping member 62 shall be the same.
As shown in FIG. 7A, when the shortest distance to the peripheral edge of the flange 42 is compared in a state before the advance / retreat direction of the first electrode E1 is restricted, the first clamping member is more than the second clamping member 62. 61 is arranged at a position close to the flange 42. Therefore, when the first clamping member 61 and the second clamping member 62 move, the first clamping member 61 comes into contact with the flange 42 before the second clamping member 62 as shown in FIG. 7B. become.
At the point of time shown in FIG. 7B, the central axis EY of the first electrode E1 and the central axis 4Y of the auxiliary member 4 have not coincided with each other, and thus the regulation of the advance / retreat direction of the first electrode E1 is not completed.

図7(C)に示すように、第1挟持部材61の当接部91が補助部材4のフランジ42の周縁部に当接した後も、第1挟持部材61及び第2挟持部材62の回動は継続される。このとき、第1挟持部材61は、固定されて成る第2部材3に係合する補助部材4によって、その移動が阻止される。よって、第2挟持部材62のみが、第2挟持部材62の当接部91がフランジ42に当接するまで移動することになる。   As shown in FIG. 7C, even after the contact portion 91 of the first clamping member 61 contacts the peripheral edge of the flange 42 of the auxiliary member 4, the rotation of the first clamping member 61 and the second clamping member 62 is performed. The movement continues. At this time, the movement of the first clamping member 61 is blocked by the auxiliary member 4 that engages with the second member 3 that is fixed. Therefore, only the second clamping member 62 moves until the contact portion 91 of the second clamping member 62 contacts the flange 42.

なお、第1部材2及び第2部材3は上述したように固定されている。よって、第1部材2の貫通孔5に挿入部41が挿入される補助部材4は、Y軸方向への応力が作用しない限り、補助部材4が第1部材2から脱落しない又はし難い。よって、本実施形態においては、挟持部材6が補助部材4に当接する際に、補助部材4に対してX軸方向及びZ軸方向の応力が作用するに過ぎないので、補助部材4が脱落しない又はし難い。   The first member 2 and the second member 3 are fixed as described above. Therefore, the auxiliary member 4 in which the insertion portion 41 is inserted into the through hole 5 of the first member 2 does not or does not easily fall off from the first member 2 unless stress in the Y-axis direction acts. Therefore, in this embodiment, when the clamping member 6 contacts the auxiliary member 4, only the stress in the X-axis direction and the Z-axis direction acts on the auxiliary member 4, so that the auxiliary member 4 does not fall off. Or hard to do.

第1挟持部材61が補助部材4に当接してから、第2挟持部材62が補助部材4に当接するまで間に生じる第1回動部材81及び第2回動部材82のトルク又は回転量等が、サーボモータ制御によって検知される。検知されたトルクに基づいて、補助部材4の中心軸線4Yの位置を基準位置としたときの、第1電極E1の中心軸線EYのX軸方向及びZ軸方向へのズレを導出する。電気溶接装置1が取付けられて成るロボットアーム(図示せず)を調整することによって、導出されたズレを無くす又は小さくする方向に第1電極E1を移動させることができる。これにより、第1電極E1の中心軸線EYが補助部材4の中心軸線4Yに一致又は略一致するので、第1電極E1を図4〜図7におけるY軸に沿って移動させるだけで補助部材4の中心部に当接及び溶接可能である。
以上により、第1電極E1の進退方向の規制が完了する。
Torque or amount of rotation of the first rotating member 81 and the second rotating member 82 generated between the time when the first clamping member 61 contacts the auxiliary member 4 and the time when the second clamping member 62 contacts the auxiliary member 4 Is detected by servo motor control. Based on the detected torque, the deviation of the central axis EY of the first electrode E1 in the X-axis direction and the Z-axis direction when the position of the central axis 4Y of the auxiliary member 4 is set as a reference position is derived. By adjusting a robot arm (not shown) to which the electric welding apparatus 1 is attached, the first electrode E1 can be moved in a direction to eliminate or reduce the derived deviation. As a result, the central axis EY of the first electrode E1 coincides with or substantially coincides with the central axis 4Y of the auxiliary member 4, and therefore, the auxiliary member 4 can be obtained simply by moving the first electrode E1 along the Y axis in FIGS. Can be contacted and welded to the central portion of the plate.
Thus, the regulation of the advance / retreat direction of the first electrode E1 is completed.

なお、本実施形態においては、第1電極E1の中心軸線EYと補助部材4の中心軸線4YとがZ軸方向にのみズレが生じている場合を示した。仮に、電気溶接装置1における装置の特性等に起因して特定の方向にのみズレが生じ易いと予め判明している場合は、当接部91等のように補助部材4に対して4方向から当接する必要は無く、例えばズレが生じ易い方向に対して直交する面を有する当接部を設けておけば良い。本実施形態では様々な方向へのズレを想定しているので、全ての方向へのズレを修正可能な当接部91を有する挟持部材6が設けられている。   In the present embodiment, the case where the center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4 are displaced only in the Z-axis direction is shown. If it is known in advance that the displacement is likely to occur only in a specific direction due to the characteristics of the apparatus in the electric welding apparatus 1, the auxiliary member 4 is viewed from four directions as in the contact portion 91. There is no need to abut, and for example, an abutting portion having a surface orthogonal to a direction in which displacement is likely to occur may be provided. In this embodiment, since the shift | offset | difference to various directions is assumed, the clamping member 6 which has the contact part 91 which can correct the shift | offset | difference to all the directions is provided.

(5)ズレの修正形態の変形例
(5−1)挟持部材6を用いたズレの修正形態
上述した実施形態においては、第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとのズレの大きさを第1回動部材81及び第2回動部材82のトルク又は回転量等から一旦導出して、そのズレを修正するために第1電極E1を移動させている。
(5) Modification Example of Displacement Correction Form (5-1) Displacement Correction Form Using Holding Member 6 In the above-described embodiment, the center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4 The magnitude of the deviation is once derived from the torque or the rotation amount of the first rotating member 81 and the second rotating member 82, and the first electrode E1 is moved in order to correct the deviation.

電気溶接装置1が取付けられるロボットアームは、第1電極E1を接合する部材の近傍まで移動させた後は基本的に略固定状態にされる。しかしながら、ロボットアームの先端部分に配置される第1電極E1及びガイド基部7等は、図4〜図7に示したX軸方向及びZ軸方向に応力が作用すると、若干移動可能であることが多い。よって、第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとが一致していない場合に、ズレが生じている方向と逆方向に第1電極E1に対して応力を作用させることによって、ズレを無くす又は小さくすることができる。
なお、このとき好ましくはロボットアームの電気溶接装置1が取付けられる先端部分を略固定状態から可動状態に一旦切り換えておくのが良い。これにより、種々のガイドによる第1電極E1の進退方向を規制する際に、第1電極E1の位置等を微調整するのに大きな応力を作用させる必要がなくなり、正確かつ円滑な進退方向の規制が可能になる。なお、規制が完了次第、略固定状態に戻しておくことにより、規制状態にズレ等が生じないので好ましい。
The robot arm to which the electric welding apparatus 1 is attached is basically substantially fixed after the first arm E1 is moved to the vicinity of the member to be joined. However, the first electrode E1, the guide base 7 and the like arranged at the tip portion of the robot arm may be slightly movable when stress is applied in the X-axis direction and the Z-axis direction shown in FIGS. Many. Therefore, when the central axis EY of the first electrode E1 and the central axis 4Y of the auxiliary member 4 do not coincide with each other, stress is applied to the first electrode E1 in the direction opposite to the direction in which the deviation occurs. , Displacement can be eliminated or reduced.
At this time, it is preferable that the tip end portion to which the electric welding device 1 of the robot arm is attached is temporarily switched from a substantially fixed state to a movable state. Thereby, when regulating the advance / retreat direction of the first electrode E1 by various guides, it is not necessary to apply a large stress to finely adjust the position or the like of the first electrode E1, and accurate and smooth regulation of the advance / retreat direction is eliminated. Is possible. In addition, it is preferable to return to the substantially fixed state as soon as the regulation is completed, because no deviation or the like occurs in the regulated state.

具体的には、予め電気溶接装置1の構造として、第1電極E1の中心軸線EYが、第1挟持部材61と第2挟持部材62とのZ軸方向における略中央部に位置する状態が常に維持されるようにしておく。
更に、図7(B)に示した状態から、第2回動部材82は回動動作を停止することによって第2挟持部材62は固定しておく。
次に、第1回動部材81のみを回動させることによって、第1挟持部材61を第2挟持部材62に対して近付ける方向に移動させようとする。しかしながら、補助部材4は略固定状態にある。よって、第1回動部材81のトルクに基づいた第1挟持部材61から補助部材4に対して作用する応力は、大きさが同一で逆方向に反作用の力として第1挟持部材61に作用する。該反作用として第1挟持部材61が受ける応力の大きさ、つまり第1回動部材81のトルクが、第1電極E1及びガイド基部7を移動させることのできる程度の大きさであれば、第1挟持部材61と第2挟持部材62との間隔を狭めることができる。
すなわち、第1挟持部材61が、ガイド基部7及び第1電極E1に対して第1回動部材81のトルク分の応力を作用させる。応力を受けたガイド基部7及び第1電極E1が、基準位置である補助部材4の中心軸線4Yに対して、ズレが無くなる方向に移動する。よって、第1挟持部材61と第2挟持部材62との間隔が狭まり、結果として第1挟持部材61の当接部91だけでなく、第2挟持部材62の当接部91もフランジ42に当接する。
したがって、図7(B)に示す状態から、第2挟持部材62が停止し、第1挟持部材61が移動しようとすると、第1挟持部材61及び第2挟持部材62のZ軸方向の略中央部に位置する第1電極E1の中心軸線EYが、補助部材4の中心軸線4Yに近付く方向に移動する。第1回動部材81の回動動作は、第1電極E1の中心軸線EYが補助部材4の中心軸線4Yに一致又は略一致するまで継続される。
以上により、第1電極E1の進退方向の規制が完了する。
Specifically, as the structure of the electric welding apparatus 1, a state in which the central axis EY of the first electrode E1 is always located at a substantially central portion in the Z-axis direction between the first clamping member 61 and the second clamping member 62 is always present. To be maintained.
Further, from the state shown in FIG. 7B, the second rotating member 82 stops the rotating operation, so that the second holding member 62 is fixed.
Next, by rotating only the first rotation member 81, the first clamping member 61 is moved in a direction approaching the second clamping member 62. However, the auxiliary member 4 is in a substantially fixed state. Therefore, the stress acting on the auxiliary member 4 from the first clamping member 61 based on the torque of the first rotating member 81 is the same in magnitude and acts on the first clamping member 61 as a reaction force in the opposite direction. . If the magnitude of the stress received by the first clamping member 61 as the reaction, that is, the torque of the first rotating member 81 is large enough to move the first electrode E1 and the guide base 7, the first The interval between the holding member 61 and the second holding member 62 can be reduced.
That is, the first clamping member 61 applies a stress corresponding to the torque of the first rotating member 81 to the guide base 7 and the first electrode E1. The stressed guide base 7 and the first electrode E1 move in a direction in which there is no deviation with respect to the central axis 4Y of the auxiliary member 4 that is the reference position. Therefore, the interval between the first clamping member 61 and the second clamping member 62 is narrowed. As a result, not only the abutting portion 91 of the first clamping member 61 but also the abutting portion 91 of the second clamping member 62 contacts the flange 42. Touch.
Therefore, when the second clamping member 62 stops and the first clamping member 61 tries to move from the state shown in FIG. 7B, the first clamping member 61 and the second clamping member 62 are approximately in the center in the Z-axis direction. The central axis EY of the first electrode E1 located in the part moves in a direction approaching the central axis 4Y of the auxiliary member 4. The rotation operation of the first rotation member 81 is continued until the central axis EY of the first electrode E1 coincides with or substantially coincides with the central axis 4Y of the auxiliary member 4.
Thus, the regulation of the advance / retreat direction of the first electrode E1 is completed.

該変形例による第1電極E1の進退方向の規制は、第1回動部材81のトルクによってガイド基部7及び第1電極E1を移動させることによって達成される。つまり、第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとのズレの大きさを導出することなく、第1回動部材81の回動によってズレを無くす又は小さくすることができるので、サーボモータ制御等を用いる必要が無く、装置構造及び進退方向の規制工程の簡素化を図ることができる。   The regulation of the forward / backward direction of the first electrode E <b> 1 according to the modification is achieved by moving the guide base 7 and the first electrode E <b> 1 by the torque of the first rotating member 81. That is, the deviation can be eliminated or reduced by the rotation of the first rotation member 81 without deriving the magnitude of the deviation between the center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4. Further, it is not necessary to use servo motor control or the like, and the device structure and the forward / backward regulating process can be simplified.

(5−2)ガイドの第1変形例
図8に示す実施形態は、図4〜図7に示した実施形態における挟持部材6に代えて、摺動部材10を用いている。その他の点においては、同一部材を用いているので、同一の参照符号を付すと共に、詳細な説明を省略する。なお、摺動部材10は、本発明に係る電気溶接装置のガイドの一例であると共に、屈曲部材の一例でもある。
なお、図8に示す実施形態においても、図4〜図7に示した実施形態と同様に、第1電極E1の中心軸線EYと補助部材4の中心軸線4YとはZ軸方向にのみズレが生じていることとする。
図8は、第1電極E1及び摺動部材10の先端部と、第1部材2、第2部材3及び補助部材4を側方視した一部断面概略図である。図8(A)は駆動前の摺動部材10と接合される部材とを示す断面概略図であり、図8(B)は駆動中の摺動部材10と接合される部材とを示す断面概略図であり、図8(C)は駆動後の摺動部材10と接合される部材とを示す断面概略図である。
(5-2) First Modified Example of Guide The embodiment shown in FIG. 8 uses a sliding member 10 instead of the clamping member 6 in the embodiment shown in FIGS. In other respects, since the same member is used, the same reference numeral is attached and detailed description is omitted. The sliding member 10 is an example of a guide for the electric welding apparatus according to the present invention and an example of a bending member.
In the embodiment shown in FIG. 8, as in the embodiments shown in FIGS. 4 to 7, the center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4 are misaligned only in the Z-axis direction. It has occurred.
FIG. 8 is a partial cross-sectional schematic view of the first electrode E1 and the distal end portion of the sliding member 10, the first member 2, the second member 3, and the auxiliary member 4 viewed from the side. FIG. 8A is a schematic cross-sectional view showing the member to be joined to the sliding member 10 before driving, and FIG. 8B is a schematic cross-sectional view showing the member to be joined to the sliding member 10 during driving. FIG. 8C is a schematic cross-sectional view showing the driven sliding member 10 and the member to be joined.

摺動部材10は、第1摺動部材10Aと、第2摺動部材10Bとを有する。第1摺動部材10A及び第2摺動部材10Bは、2つの同一部材を、位置及び方向を変えて配置しているだけである。第1摺動部材10A及び第2摺動部材10Bは、第1電極E1を囲むように配置され、それぞれ非屈曲部101と屈曲部102とを有している。第1摺動部材10A及び第2摺動部材10Bは、それぞれが全体として板状部材であり、第2部材3近傍において屈曲している。
図8に示すように、第1摺動部材10Aにおける非屈曲部101から当接部92までのZ軸に沿った距離をD1とし、第2摺動部材10Bにおける非屈曲部101から当接部92までのZ軸に沿った距離をD2とし、補助部材4のフランジ42の外径をD3とし、第1摺動部材10Aの非屈曲部101から対向して配置される第2摺動部材10Bの非屈曲部101までのZ軸に沿った距離をD4とする。
The sliding member 10 includes a first sliding member 10A and a second sliding member 10B. The first sliding member 10A and the second sliding member 10B only have two identical members arranged in different positions and directions. The first sliding member 10A and the second sliding member 10B are disposed so as to surround the first electrode E1, and each have a non-bent portion 101 and a bent portion 102. Each of the first sliding member 10A and the second sliding member 10B is a plate-like member as a whole, and is bent in the vicinity of the second member 3.
As shown in FIG. 8, the distance along the Z-axis from the non-bending portion 101 to the contact portion 92 in the first sliding member 10A is D1, and the non-bending portion 101 to the contact portion in the second sliding member 10B. The distance along the Z-axis up to 92 is D2, the outer diameter of the flange 42 of the auxiliary member 4 is D3, and the second sliding member 10B disposed opposite the non-bent portion 101 of the first sliding member 10A. The distance along the Z axis to the non-bent portion 101 is D4.

また、図8に示す実施形態においても、電気溶接装置1の構造として、第1電極E1の中心軸線EYが、第1摺動部材10Aと第2摺動部材10BとのZ軸方向における略中央部に位置する状態が常に維持されるようにしておく。   Also in the embodiment shown in FIG. 8, as the structure of the electric welding apparatus 1, the central axis EY of the first electrode E <b> 1 is approximately the center in the Z-axis direction between the first sliding member 10 </ b> A and the second sliding member 10 </ b> B. The state located in the section is always maintained.

非屈曲部101は、Y軸方向に沿って延在する板状部であり、進退方向を規制するときに作用する応力によっては変形しないように形成されている。
また、屈曲部102は、非屈曲部101の先端部から第1部材2に向って延在し、図8(A)に示す初期状態においては第1電極E1に向って屈曲するように形成されている。屈曲部102は、例えばY軸方向に沿った応力を受けると、非屈曲部101と屈曲部102との成す角度が可変であるように形成されている。つまり、第1摺動部材10A及び第2摺動部材10Bは、先端部に形成される屈曲部102の非屈曲部101に対する屈曲角度が増減するように変形可能になっている。
なお、屈曲部102は屈曲角度を可変に形成されるが、屈曲部102自体は、進退方向を規制するときに作用する応力によっても湾曲又は屈曲等の変形を生じない板状部であるのが好ましい。
更に、各屈曲部102の先端部が、補助部材4に当接可能な当接部92として形成されている。
The non-bent portion 101 is a plate-like portion extending along the Y-axis direction, and is formed so as not to be deformed by a stress acting when the advance / retreat direction is restricted.
The bent portion 102 extends from the tip portion of the non-bent portion 101 toward the first member 2, and is formed to bend toward the first electrode E1 in the initial state shown in FIG. ing. The bent portion 102 is formed so that the angle formed between the non-bent portion 101 and the bent portion 102 is variable when subjected to, for example, stress along the Y-axis direction. That is, the first sliding member 10A and the second sliding member 10B can be deformed so that the bending angle of the bent portion 102 formed at the tip portion with respect to the non-bent portion 101 increases or decreases.
The bent portion 102 is formed with a variable bending angle. However, the bent portion 102 itself is a plate-like portion that does not undergo deformation such as bending or bending due to stress acting when regulating the forward / backward direction. preferable.
Further, the tip of each bent portion 102 is formed as a contact portion 92 that can contact the auxiliary member 4.

第1摺動部材10A及び第2摺動部材10Bとしては、例えば屈曲部102のみが屈曲可能な板バネを用いても良く、非屈曲部101と屈曲部102とを別体の板状部材として形成し、非屈曲部101と屈曲部102とを丁番等によって屈曲及び復元可能な構造としても良い。   As the first sliding member 10A and the second sliding member 10B, for example, a leaf spring in which only the bent portion 102 can be bent may be used, and the non-bent portion 101 and the bent portion 102 are used as separate plate-like members. The non-bent portion 101 and the bent portion 102 may be formed and bent and restored by a hinge or the like.

図8(A)に示す状態においては、当接部92はいずれの部材にも当接していない。このとき、全ての当接部92がフランジ42に当接していないので、D1とD2とD3との総和はD4よりも小さい。
第1摺動部材10A及び第2摺動部材10Bは、Y軸方向に沿って往復動可能な部材である。図8に示す実施形態において、第1電極E1の進退方向を規制するには、摺動部材10をY軸方向に沿って第1部材2に向って移動させれば良い。
In the state shown in FIG. 8A, the contact portion 92 is not in contact with any member. At this time, since all the contact portions 92 are not in contact with the flange 42, the sum of D1, D2, and D3 is smaller than D4.
The first sliding member 10A and the second sliding member 10B are members that can reciprocate along the Y-axis direction. In the embodiment shown in FIG. 8, in order to restrict the advance / retreat direction of the first electrode E1, the sliding member 10 may be moved toward the first member 2 along the Y-axis direction.

続いて、図8(A)に示す状態から摺動部材10を第1部材2に向かって移動させると、先ず当接部92が第1部材2に当接する。摺動部材10を更に移動させ続けると、屈曲部102が第1部材2からY軸方向への応力を受けるので、非屈曲部101と屈曲部102との屈曲角度が減少するように屈曲部102が変位する。このとき、当接部92は、第1部材2の表面を補助部材4に向かって摺動する。第1部材2の表面を摺動する当接部92は、図8(B)に示すように、フランジ42の周縁部に当接する。第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとはズレが生じているので、補助部材4の中心軸線4Yを基準位置とした場合のズレの方向とは逆側に配置される第1摺動部材10Aの当接部92が、第2摺動部材10Bの当接部92よりも先にフランジ42に当接する。
このとき、第2摺動部材10Bの当接部92がフランジ42に当接していないので、D1とD2とD3との総和はD4よりも小さい。
Subsequently, when the sliding member 10 is moved from the state shown in FIG. 8A toward the first member 2, the contact portion 92 first contacts the first member 2. If the sliding member 10 is further moved, the bent portion 102 receives stress in the Y-axis direction from the first member 2, so that the bent portion 102 is reduced so that the bending angle between the non-bent portion 101 and the bent portion 102 decreases. Is displaced. At this time, the contact portion 92 slides on the surface of the first member 2 toward the auxiliary member 4. The contact portion 92 that slides on the surface of the first member 2 contacts the peripheral portion of the flange 42 as shown in FIG. Since the center axis line EY of the first electrode E1 and the center axis line 4Y of the auxiliary member 4 are misaligned, they are arranged on the opposite side of the direction of misalignment when the center axis line 4Y of the auxiliary member 4 is used as the reference position. The contact portion 92 of the first sliding member 10A contacts the flange 42 before the contact portion 92 of the second sliding member 10B.
At this time, since the contact portion 92 of the second sliding member 10B does not contact the flange 42, the sum of D1, D2, and D3 is smaller than D4.

次に、図8(B)に示した状態から、摺動部材10を第1部材2に向かって更に移動させる。第2摺動部材10Bにおける当接部92はいずれの部材にも当接しないまま、屈曲部102は第1部材2の表面を摺動する。
これに対して、第1摺動部材10Aが第1部材2に向かって移動しようとする力が、第1摺動部材10Aにおける屈曲部102の当接部92を介して、フランジ42に対してZ軸方向に作用する。しかしながら、第1摺動部材10Aが第1部材2に向かって移動しようとしても、第1摺動部材10Aの当接部92が既に当接している補助部材4は略固定状態にある。これにより、第1摺動部材10Aの屈曲部102から補助部材4に対して作用する応力は、そのまま反作用の力として第1摺動部材10Aに作用する。該反作用として第1摺動部材10Aが受ける応力の大きさが、第1電極E1を移動させることのできる程度の大きさであれば、第1摺動部材10Aの当接部92と第2摺動部材10Bの当接部92との間隔を狭めることができる。
すなわち、当接部92が当接する補助部材4が固定されていることによって、第1摺動部材10Aは、第1摺動部材10Aが第1部材2に向って移動しようとする応力を、第1電極E1に対して作用させることになる。第1電極E1が応力を受けると、基準位置である補助部材4の中心軸線4Yに対して、ズレが無くなる方向に移動する。よって第1摺動部材10Aの当接部92と第2摺動部材10Bの当接部92との間隔が狭まり、結果として図8(C)に示すように、第1摺動部材10Aの当接部92だけでなく、第2摺動部材10Bの当接部92もフランジ42に当接する。
Next, the sliding member 10 is further moved toward the first member 2 from the state shown in FIG. The bent portion 102 slides on the surface of the first member 2 while the contact portion 92 of the second sliding member 10B does not contact any member.
On the other hand, the force that the first sliding member 10A tries to move toward the first member 2 is applied to the flange 42 via the contact portion 92 of the bent portion 102 in the first sliding member 10A. Acts in the Z-axis direction. However, even if the first sliding member 10A tries to move toward the first member 2, the auxiliary member 4 with which the contact portion 92 of the first sliding member 10A is already in contact is in a substantially fixed state. Thereby, the stress which acts on the auxiliary member 4 from the bent portion 102 of the first sliding member 10A acts on the first sliding member 10A as a reaction force as it is. If the magnitude of the stress received by the first sliding member 10A as the reaction is large enough to move the first electrode E1, the contact portion 92 of the first sliding member 10A and the second sliding member are moved. The space | interval with the contact part 92 of the moving member 10B can be narrowed.
That is, by fixing the auxiliary member 4 with which the abutting portion 92 abuts, the first sliding member 10A causes the stress that the first sliding member 10A tries to move toward the first member 2 to the first It acts on one electrode E1. When the first electrode E1 receives stress, the first electrode E1 moves in a direction in which there is no deviation with respect to the central axis 4Y of the auxiliary member 4 that is the reference position. Therefore, the distance between the abutting portion 92 of the first sliding member 10A and the abutting portion 92 of the second sliding member 10B is reduced, and as a result, as shown in FIG. Not only the contact portion 92 but also the contact portion 92 of the second sliding member 10 </ b> B contacts the flange 42.

したがって、図8(B)に示す状態から、摺動部材10が第1部材2に向かって移動しようとすると、第1摺動部材10A及び第2摺動部材10Bの間におけるZ軸方向の略中央部に位置する第1電極E1の中心軸線EYが、補助部材4の中心軸線4Yに近付く方向に移動する。摺動部材10の第1部材2に向かう移動は、第1電極E1の中心軸線EYが補助部材4の中心軸線4Yに一致又は略一致するまで継続される。   Therefore, when the sliding member 10 tries to move toward the first member 2 from the state shown in FIG. 8B, the Z-axis direction between the first sliding member 10A and the second sliding member 10B is substantially reduced. The central axis EY of the first electrode E1 located at the center moves in a direction approaching the central axis 4Y of the auxiliary member 4. The movement of the sliding member 10 toward the first member 2 is continued until the central axis EY of the first electrode E1 coincides with or substantially coincides with the central axis 4Y of the auxiliary member 4.

第1電極E1の中心軸線EYが補助部材4の中心軸線4Yに一致又は略一致したとき、第1摺動部材10A及び第2摺動部材10Bの各当接部92がフランジ42に当接しているので、D1とD2とD3との総和はD4に等しくなる。つまり、図8に示す実施形態においては、D1とD2とD3との総和はD4に等しくなるまで摺動部材10を第1部材2に向って移動させることにより、第1電極E1の進退方向を規制することができる。
以上により、図8に示す実施形態における第1電極E1の進退方向の規制が完了する。
When the central axis EY of the first electrode E1 coincides with or substantially coincides with the central axis 4Y of the auxiliary member 4, the contact portions 92 of the first sliding member 10A and the second sliding member 10B come into contact with the flange 42. Therefore, the sum of D1, D2, and D3 is equal to D4. That is, in the embodiment shown in FIG. 8, by moving the sliding member 10 toward the first member 2 until the sum of D1, D2, and D3 is equal to D4, the advance / retreat direction of the first electrode E1 is changed. Can be regulated.
Thus, the regulation of the advance / retreat direction of the first electrode E1 in the embodiment shown in FIG. 8 is completed.

なお、図8に示す実施形態のように、ガイドが第1部材に向う応力を、電極の進退方向の規制のために転換することができる限り、上述の摺動部材10のような板状部材、又は、板状部材と同様の機能を有する適宜の形態の部材は、少なくとも2つ設けられていれば良い。   As in the embodiment shown in FIG. 8, the plate-like member such as the above-described sliding member 10 as long as the stress that the guide is directed to the first member can be changed for regulating the advance / retreat direction of the electrode. Alternatively, it is sufficient that at least two members having an appropriate form having the same function as the plate-like member are provided.

該変形例による第1電極E1の進退方向の規制は、摺動部材10が第1部材2に向って移動する力によってガイド基部7及び第1電極E1を移動させることで達成される。つまり、第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとのズレの大きさを導出することなく、摺動部材10の移動によってズレを無くす又は小さくすることができるので、サーボモータ制御等を用いる必要が無く、装置構造及び進退方向の規制工程の簡素化を図ることができる。   The regulation of the advancing / retreating direction of the first electrode E1 according to the modification is achieved by moving the guide base 7 and the first electrode E1 by the force by which the sliding member 10 moves toward the first member 2. In other words, the deviation of the center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4 can be eliminated or reduced by moving the sliding member 10 without deriving the magnitude of the deviation. There is no need to use control or the like, and the device structure and the forward / backward regulating process can be simplified.

(5−3)ガイドの第2変形例
図9に示す実施形態は、図4〜図7に示した実施形態における挟持部材6に代えて、テーパ部材11を用いている。その他の点においては、同一部材を用いているので、同一の参照符号を付すと共に、詳細な説明を省略する。なお、テーパ部材11は、本発明に係る電気溶接装置のガイドの一例であると共に、テーパ部材の一例でもある。
なお、図9に示す実施形態においても、図4〜図7に示した実施形態と同様に、第1電極E1の中心軸線EYと補助部材4の中心軸線4YとはZ軸方向にのみズレが生じていることとする。
図9は、第1電極E1及びテーパ部材11の先端部と、第1部材2、第2部材3及び補助部材4を側方視した一部断面概略図である。図9(A)は駆動前のテーパ部材11と接合される部材とを示す断面概略図であり、図9(B)は駆動中のテーパ部材11と接合される部材とを示す断面概略図であり、図9(C)は駆動後のテーパ部材11と接合される部材とを示す断面概略図である。
(5-3) Second Modification of Guide The embodiment shown in FIG. 9 uses a taper member 11 instead of the clamping member 6 in the embodiment shown in FIGS. In other respects, since the same member is used, the same reference numeral is attached and detailed description is omitted. The taper member 11 is an example of a guide for the electric welding apparatus according to the present invention and an example of a taper member.
In the embodiment shown in FIG. 9 as well, the center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4 are misaligned only in the Z-axis direction, as in the embodiment shown in FIGS. It has occurred.
FIG. 9 is a partial cross-sectional schematic view of the first electrode E1 and the distal end portion of the taper member 11, and the first member 2, the second member 3, and the auxiliary member 4 viewed from the side. 9A is a schematic cross-sectional view showing the taper member 11 and the member to be joined before driving, and FIG. 9B is a schematic cross-sectional view showing the member to be joined to the taper member 11 being driven. FIG. 9C is a schematic cross-sectional view showing the tapered member 11 after driving and the member to be joined.

テーパ部材11は、第1電極E1を囲んで配置される筒体であり、筒部111と突出部112とを有している。
また、図9に示す実施形態においても、電気溶接装置1の構造として、第1電極E1の中心軸線EYが、テーパ部材11のZ軸方向における略中央部に位置する状態、つまりテーパ部材11の中心軸線に一致又は略一致する状態が常に維持されるようにしておく。
The taper member 11 is a cylindrical body that is disposed so as to surround the first electrode E <b> 1, and includes a cylindrical portion 111 and a protruding portion 112.
Also in the embodiment shown in FIG. 9, as a structure of the electric welding apparatus 1, the central axis EY of the first electrode E <b> 1 is located at a substantially central portion in the Z-axis direction of the taper member 11, that is, the taper member 11. A state of being coincident or substantially coincident with the central axis line is always maintained.

筒部111は、Y軸方向に沿って延在する円筒体であり、進退方向を規制するときに作用する応力によっては変形しないように形成されている。
また、突出部112は、筒部111の先端部から第1電極E1に向って、かつ第1部材2から離れる方向に延在する部位である。突出部112は、図9(A)に示すように、第1部材2に直交するY軸に対して傾斜して成るテーパ面を有するように、筒部111の先端部から内側に張り出して形成されている。また、突出部112は、第1電極E1の進退方向を規制するときに作用する応力によっては変形しないように形成されている。突出部112は、筒状部材であるテーパ部材11の端部であるので、開口して形成される。該開口部分には第1電極E1が挿通可能であり、例えば進退方向の規制完了後の第1電極E1が補助部材4に向って移動するときに突出部112の開口部分を介して突出することができる。
更に、テーパ部材11の突出部112における第1部材2側の面が、補助部材4に当接可能な当接部93として形成されている。
The cylinder part 111 is a cylindrical body extending along the Y-axis direction, and is formed so as not to be deformed by a stress acting when the advance / retreat direction is restricted.
The protruding portion 112 is a portion that extends from the distal end portion of the cylindrical portion 111 toward the first electrode E1 and away from the first member 2. As shown in FIG. 9A, the protruding portion 112 is formed so as to protrude inward from the distal end portion of the cylindrical portion 111 so as to have a tapered surface inclined with respect to the Y axis orthogonal to the first member 2. Has been. Further, the protruding portion 112 is formed so as not to be deformed by a stress acting when the advance / retreat direction of the first electrode E1 is restricted. Since the protruding portion 112 is an end portion of the tapered member 11 that is a cylindrical member, the protruding portion 112 is formed to be opened. The first electrode E1 can be inserted into the opening portion, and, for example, the first electrode E1 after completion of regulation in the forward / backward direction protrudes through the opening portion of the protruding portion 112 when moving toward the auxiliary member 4. Can do.
Further, the surface of the protruding portion 112 of the taper member 11 on the first member 2 side is formed as a contact portion 93 that can contact the auxiliary member 4.

テーパ部材11としては、例えば全体が強度の高い材料で形成される筒状体として形成されても良く、図9に示すテーパ部材11の断面と略同形状の板状部材を第1電極E1の周囲に少なくとも2つ配置しても良い。   The taper member 11 may be formed, for example, as a tubular body formed entirely of a material having high strength, and a plate-like member having substantially the same shape as the cross section of the taper member 11 shown in FIG. 9 is used as the first electrode E1. You may arrange | position at least 2 around.

図9(A)に示す状態においては、当接部93は補助部材4に当接していない。テーパ部材11は、Y軸方向に沿って往復動可能な部材である。図9に示す実施形態において、第1電極E1の進退方向を規制するには、テーパ部材11をY軸方向に沿って第1部材2に向って移動させる。   In the state shown in FIG. 9A, the contact portion 93 is not in contact with the auxiliary member 4. The taper member 11 is a member that can reciprocate along the Y-axis direction. In the embodiment shown in FIG. 9, in order to restrict the advance / retreat direction of the first electrode E1, the taper member 11 is moved toward the first member 2 along the Y-axis direction.

図9(A)に示す状態からテーパ部材11を第1部材2に向かって移動させると、図9(B)に示すように、先ず当接部93の一部が補助部材4のフランジ42に当接する。第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとはズレが生じているので、補助部材4の中心軸線4Yを基準位置とした場合のズレの方向とは逆側に位置する突出部112のテーパ面である当接部93がフランジ42に当接する。このとき、当接部93とフランジ42とは一点において接触している状態である。   When the taper member 11 is moved toward the first member 2 from the state shown in FIG. 9A, first, a part of the contact portion 93 becomes the flange 42 of the auxiliary member 4 as shown in FIG. 9B. Abut. Since the center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4 are misaligned, the protrusion located on the opposite side to the direction of misalignment when the center axis 4Y of the auxiliary member 4 is used as the reference position. A contact portion 93 which is a tapered surface of the portion 112 contacts the flange 42. At this time, the contact portion 93 and the flange 42 are in contact with each other at one point.

次に、図9(B)に示した状態から、テーパ部材11を第1部材2に向かって更に移動させる。テーパ部材11が第1部材2に向かって移動しようとする力が、当接部93を介して、フランジ42に対してZ軸方向に作用する。しかしながら、テーパ部材11の突出部112が既に当接している補助部材4は略固定状態にある。これにより、テーパ部材11の突出部112から補助部材4に対して作用する応力は、そのまま反作用の力としてテーパ部材11に作用する。該反作用としてテーパ部材11が受ける応力の大きさが、第1電極E1を移動させることのできる程度の大きさであれば、テーパ部材11及び第1電極E1全体が移動することになる。
すなわち、当接部93が当接する補助部材4が固定されていることによって、テーパ部材11は、テーパ部材11が第1部材2に向って移動しようとする応力を、第1電極E1に対して作用させることになる。第1電極E1は、該応力を受けることによって、基準位置である補助部材4の中心軸線4Yに対して、ズレが無くなる方向に移動する。第1電極E1と共にテーパ部材11も移動することになり、テーパ部材11の突出部112における当接部93がフランジ42の周縁部を摺動する。結果として、図9(C)に示すようにテーパ部材11の当接部93とフランジ42の周縁部とが一様に当接する。
したがって、図9(B)に示す状態から、テーパ部材11が第1部材2に向かって移動しようとすると、テーパ部材11の同心軸上に配置される第1電極E1の中心軸線EYが、補助部材4の中心軸線4Yに近付く方向に移動する。テーパ部材11の第1部材2に向かう移動は、第1電極E1の中心軸線EYが補助部材4の中心軸線4Yに一致又は略一致するまで継続される。
以上により、図9に示す実施形態における第1電極E1の進退方向の規制が完了する。
このとき、当接部93とフランジ42とは、フランジ42の周縁部全周に亘って接触している状態である。つまり、第1電極E1の進退方向の規制によって、当接部93とフランジ42との接点が一点から、連続する接点又は複数点等に変化する。
Next, the taper member 11 is further moved toward the first member 2 from the state shown in FIG. A force that the taper member 11 tries to move toward the first member 2 acts on the flange 42 in the Z-axis direction via the contact portion 93. However, the auxiliary member 4 with which the protrusion 112 of the taper member 11 is already in contact is in a substantially fixed state. Thereby, the stress which acts on the auxiliary member 4 from the protrusion 112 of the taper member 11 acts on the taper member 11 as a reaction force as it is. When the magnitude of the stress received by the taper member 11 as the reaction is large enough to move the first electrode E1, the taper member 11 and the entire first electrode E1 move.
That is, since the auxiliary member 4 with which the contact portion 93 contacts is fixed, the taper member 11 causes the stress that the taper member 11 tends to move toward the first member 2 to the first electrode E1. Will act. By receiving the stress, the first electrode E1 moves in a direction in which there is no deviation with respect to the central axis 4Y of the auxiliary member 4 that is the reference position. The taper member 11 also moves together with the first electrode E1, and the contact portion 93 in the protruding portion 112 of the taper member 11 slides on the peripheral portion of the flange 42. As a result, as shown in FIG. 9C, the contact portion 93 of the taper member 11 and the peripheral portion of the flange 42 are in contact uniformly.
Therefore, when the taper member 11 tries to move toward the first member 2 from the state shown in FIG. 9B, the central axis EY of the first electrode E1 disposed on the concentric axis of the taper member 11 is supplemented. It moves in a direction approaching the central axis 4Y of the member 4. The movement of the taper member 11 toward the first member 2 is continued until the central axis EY of the first electrode E1 coincides with or substantially coincides with the central axis 4Y of the auxiliary member 4.
As described above, the regulation of the advance / retreat direction of the first electrode E1 in the embodiment shown in FIG. 9 is completed.
At this time, the contact portion 93 and the flange 42 are in contact with each other over the entire periphery of the peripheral edge of the flange 42. That is, the contact between the contact portion 93 and the flange 42 changes from one point to a continuous contact or a plurality of points due to the restriction of the advance / retreat direction of the first electrode E1.

なお、図9に示す実施形態のように、ガイドが第1部材に向う応力を、電極の進退方向の規制のために転換することができる限り、上述のテーパ部材11のような筒状部材に代えて、筒状部材を軸線方向に沿って複数に分割し電極の周りに配置される板状部材等を用いることができる。   As in the embodiment shown in FIG. 9, as long as the stress that the guide is directed to the first member can be changed to restrict the advance / retreat direction of the electrode, the cylindrical member such as the tapered member 11 described above is used. Instead, it is possible to use a plate-like member or the like that is divided into a plurality of parts along the axial direction and arranged around the electrodes.

該変形例による第1電極E1の進退方向の規制は、テーパ部材11が第1部材2に向って移動する力を用いて第1電極E1を移動させることで達成される。つまり、第1電極E1の中心軸線EYと補助部材4の中心軸線4Yとのズレの大きさを導出することなく、テーパ部材11の移動によってズレを無くす又は小さくすることができるので、サーボモータ制御等を用いる必要が無く、装置構造及び進退方向の規制工程の簡素化を図ることができる。
(6)他の変形例
The restriction of the forward / backward direction of the first electrode E1 according to the modification is achieved by moving the first electrode E1 using a force by which the taper member 11 moves toward the first member 2. That is, the deviation of the center axis EY of the first electrode E1 and the center axis 4Y of the auxiliary member 4 can be eliminated or reduced by moving the taper member 11 without deriving the size of the servo motor control. Etc., and it is possible to simplify the device structure and the forward / backward regulating process.
(6) Other variations

特に図6に示したように、電気溶接装置1では挟持部材6によって補助部材4を挟持した状態で溶接をしていたが、第1電極E1の進退方向の規制完了後でかつ溶接前において、挟持部材6の挟持を解除し、更に第1部材2及び補助部材4から離しておくようにしても良い。この形態は、挟持部材6に絶縁部を設けることが困難である場合に好適である。   In particular, as shown in FIG. 6, in the electric welding apparatus 1, welding is performed in a state where the auxiliary member 4 is sandwiched by the sandwiching member 6, but after the regulation of the advance / retreat direction of the first electrode E <b> 1 is completed and before welding, The clamping of the clamping member 6 may be released and further separated from the first member 2 and the auxiliary member 4. This form is suitable when it is difficult to provide an insulating part in the clamping member 6.

また、上述した実施形態においては、第1電極E1の進退方向の規制前は、ガイド基部7及び第1電極E1が比較的大きな応力を受けると可動であったが、規制完了後にX軸方向及びZ軸方向に対して不動にすると共に、Y軸方向のみ可動にするのが好ましい。このとき、一旦規制された第1電極E1がX軸方向及びZ軸方向に再度ズレないように、規制後の位置に固定する適宜のロック機構を付設しておき、挟持部材6の挟持の解除前にロック機構を作動させるのが好ましい。   In the above-described embodiment, the guide base 7 and the first electrode E1 are movable when the first electrode E1 is subjected to relatively large stress before the regulation of the advance / retreat direction of the first electrode E1. It is preferable to make it immovable with respect to the Z-axis direction and to move only in the Y-axis direction. At this time, an appropriate lock mechanism for fixing the regulated first electrode E1 in the post-regulation position is provided so that the regulated first electrode E1 is not shifted again in the X-axis direction and the Z-axis direction, and the clamping of the clamping member 6 is released. It is preferred to activate the locking mechanism before.

上記挟持部材6における第1挟持部材61と第2挟持部材62との間隔、上記摺動部材10における第1摺動部材10Aと第2摺動部材10Bとの間隔、及び、上記テーパ部材11における突出部112の内径等が小さい場合、各ガイドを第1部材2に向って移動させたときに、補助部材4におけるフランジ42の上面に各ガイドが乗ってしまう可能性がある。
基本的にはフランジ42の周縁部に各ガイドの各当接部の一部が当接することによって、進退方向の規制動作を開始することができるが、フランジ42の上面に各ガイドが当接してしまうと、正確な進退方向の規制が不能になる可能性がある。
したがって、各ガイドの上記間隔及び内径等をフランジ42の外径に応じて大きく設定しておくのが好ましい。
更に好ましくは、例えばフランジ42の上面にガイドが乗ってしまった場合に、エラーとして検知し、各ガイドの第1部材2に向う移動を再度やり直す制御を行う形態を挙げることができる。
The interval between the first clamping member 61 and the second clamping member 62 in the clamping member 6, the interval between the first sliding member 10A and the second sliding member 10B in the sliding member 10, and the taper member 11 When the inner diameter or the like of the projecting portion 112 is small, there is a possibility that each guide will get on the upper surface of the flange 42 of the auxiliary member 4 when each guide is moved toward the first member 2.
Basically, when a part of each abutting portion of each guide abuts on the peripheral edge of the flange 42, the regulating operation in the forward / backward direction can be started, but each guide abuts on the upper surface of the flange 42. If this happens, there is a possibility that precise control of the forward / backward direction will be impossible.
Therefore, it is preferable to set the interval and the inner diameter of each guide large according to the outer diameter of the flange 42.
More preferably, for example, when a guide gets on the upper surface of the flange 42, it is detected as an error, and the movement of each guide toward the first member 2 is controlled again.

以上、本発明者によってなされた発明を適用した実施形態について説明したが、この実施形態による本発明の開示の一部をなす論述及び図面により、本発明は限定されることはない。例えば、補助部材は実施例では円盤形状又は円柱形状としたが、それ以外の形状であっても良い。すなわち、この実施形態に基づいて当業者等によりなされる他の実施形態、実施例及び運用技術等は全て本発明の範疇に含まれることは勿論であることを付け加えておく。   As mentioned above, although embodiment which applied the invention made | formed by this inventor was described, this invention is not limited by the description and drawing which make a part of indication of this invention by this embodiment. For example, although the auxiliary member has a disk shape or a cylindrical shape in the embodiment, it may have other shapes. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

1:電気溶接装置、2:第1部材、3:第2部材、4:補助部材、41:挿入部、42:フランジ、4Y:補助部材の中心軸線、5:貫通孔、6:挟持部材、61:第1挟持部材、62:第2挟持部材、7:ガイド基部、81:第1回動部材、82:第2回動部材、91、92及び93:当接部、10:摺動部材、10A:第1摺動部材、10B:第2摺動部材、101:非屈曲部、102:屈曲部、11:テーパ部材、111:筒部、112:突出部、E1:第1電極、E2:第2電極、EY:第1電極の中心軸線、901:サイドシル、902:ヒンジピラー、903:センターピラー、904:ルーフパネル、E1:第1電極、E2:第2電極、S1:部品プレス成形工程、S2:車体溶接工程、S3:車体塗装工程、S4:組付工程
1: electric welding device, 2: first member, 3: second member, 4: auxiliary member, 41: insertion portion, 42: flange, 4Y: central axis of auxiliary member, 5: through hole, 6: clamping member, 61: 1st clamping member, 62: 2nd clamping member, 7: Guide base, 81: 1st rotation member, 82: 2nd rotation member, 91, 92, and 93: Contact part, 10: Sliding member DESCRIPTION OF SYMBOLS 10A: 1st sliding member, 10B: 2nd sliding member, 101: Non-bending part, 102: Bending part, 11: Tapered member, 111: Tube part, 112: Protruding part, E1: 1st electrode, E2 : Second electrode, EY: central axis of first electrode, 901: side sill, 902: hinge pillar, 903: center pillar, 904: roof panel, E1: first electrode, E2: second electrode, S1: part press molding process , S2: Body welding process, S3: Body painting process, S4: Assembly process

Claims (6)

第1材料を含有して貫通孔を有する第1部材と、第1材料とは異なる第2材料を含有する第2部材とを、第2材料に溶接可能な第3材料を含有して貫通孔に挿入される挿入部と、該挿入部の一端部において径が大きく形成されるフランジとを有する補助部材を介して接合する電気溶接装置であって、
補助部材に向って進退可能であり、第2部材と補助部材との間に通電可能な電極と、
電極が当接する前に補助部材に当接して電極の進退方向を規制可能なガイドと、を備える、
電気溶接装置。
A first member containing a first material and having a through hole, and a second member containing a second material different from the first material and containing a third material that can be welded to the second material, the through hole An electric welding apparatus that joins via an auxiliary member having an insertion portion inserted into the flange and a flange having a large diameter formed at one end of the insertion portion,
An electrode capable of moving forward and backward toward the auxiliary member and energized between the second member and the auxiliary member;
A guide that abuts on the auxiliary member before the electrode abuts and can regulate the advancing and retreating direction of the electrode,
Electric welding equipment.
ガイドにより進退方向を規制された電極が、第2部材と補助部材とに当接して通電する、
請求項1に記載の電気溶接装置。
An electrode whose forward / backward direction is regulated by the guide is in contact with the second member and the auxiliary member and energized.
The electric welding apparatus according to claim 1.
ガイドが補助部材に当接する際に電極は固定状態から可動状態に切り換えられる、
請求項1又は2に記載の電気溶接装置。
When the guide contacts the auxiliary member, the electrode is switched from the fixed state to the movable state.
The electric welding apparatus according to claim 1 or 2.
ガイドは電極の周りに少なくとも2つ設けられる挟持部材であり、
ガイドが補助部材のフランジを挟むことにより、電極の進退方向が規制される、
請求項1〜3のいずれか1項に記載の電気溶接装置。
The guide is a clamping member provided at least two around the electrode,
When the guide sandwiches the flange of the auxiliary member, the advancing / retreating direction of the electrode is regulated,
The electric welding apparatus according to any one of claims 1 to 3.
ガイドは、電極の周りに少なくとも2つ設けられ、各一端部に移動方向に沿った力を受けると屈曲する屈曲部材であり、
ガイドが第1部材に近付く方向に移動すると、ガイドの各一端部が第1部材を摺動し、各一端部間の距離が小さくなって補助部材のフランジを挟むことにより、電極の進退方向が規制される、
請求項1〜3のいずれか1項に記載の電気溶接装置。
The guide is a bending member that is provided at least two around the electrode and bends when receiving force along the moving direction at each one end.
When the guide moves in the direction approaching the first member, each end portion of the guide slides on the first member, and the distance between the one end portions is reduced to sandwich the flange of the auxiliary member. Regulated,
The electric welding apparatus according to any one of claims 1 to 3.
ガイドは、電極を囲んで設けられ、又は電極の周りに少なくとも2つ設けられ、第1部材側の端部が電極に向ってかつ第1部材から離れる方向に延在する突出部を有するテーパ部材であり、
ガイドが第1部材に近付く方向に移動すると、ガイドの突出部が補助部材のフランジの周縁部を摺動することにより、電極の進退方向が規制される、
請求項1〜3のいずれか1項に記載の電気溶接装置。
The guide is provided so as to surround the electrode, or at least two of the guides are provided around the electrode, and a taper member having a protruding portion whose end on the first member side extends toward the electrode and away from the first member And
When the guide moves in the direction approaching the first member, the protruding portion of the guide slides on the peripheral edge portion of the flange of the auxiliary member, thereby restricting the advancing and retreating direction of the electrode.
The electric welding apparatus according to any one of claims 1 to 3.
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JP2018034165A (en) * 2016-08-29 2018-03-08 株式会社神戸製鋼所 Arc spot-welding method for jointing different materials, joint assisting member, and different-material welded joint
CN107891220A (en) * 2017-10-10 2018-04-10 首钢集团有限公司 A kind of dissimilar material joining device based on same lateral electrode
JP2020535021A (en) * 2017-12-14 2020-12-03 アーコニック インコーポレイテッドArconic Inc. Collet assembly for fastener feeders

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JP2018034165A (en) * 2016-08-29 2018-03-08 株式会社神戸製鋼所 Arc spot-welding method for jointing different materials, joint assisting member, and different-material welded joint
CN107891220A (en) * 2017-10-10 2018-04-10 首钢集团有限公司 A kind of dissimilar material joining device based on same lateral electrode
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JP2020535021A (en) * 2017-12-14 2020-12-03 アーコニック インコーポレイテッドArconic Inc. Collet assembly for fastener feeders

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