JPH0839170A - Method for joining sheet material - Google Patents
Method for joining sheet materialInfo
- Publication number
- JPH0839170A JPH0839170A JP20788194A JP20788194A JPH0839170A JP H0839170 A JPH0839170 A JP H0839170A JP 20788194 A JP20788194 A JP 20788194A JP 20788194 A JP20788194 A JP 20788194A JP H0839170 A JPH0839170 A JP H0839170A
- Authority
- JP
- Japan
- Prior art keywords
- joined
- burring
- tubular portion
- plate
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Punching Or Piercing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、積層状態にある板材を
接合する板材の接合方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining plate materials in a laminated state.
【０００２】[0002]
【従来の技術】従来、多重に積み重ねられて積層状態に
ある板材を接合する手段としては一般にリベットやねじ
による締結、あるいはスポット溶接等による溶着が知ら
れるが、強度が要求されない部品等にはコストの低減を
目的として、比較的軽易な接合方法が適用される。この
接合方法の一例を挙げれば、特公昭５８−４１１３１号
公報に記載された接合方法がある。この特公昭５８−４
１１３１号公報記載の板材の接合方法は、各被接合板材
を突出部の外径寸法が凹陥部の内径寸法よりも幾分小さ
くなるように押し出すとともに、突出部と同軸をなす貫
通穴を打ち抜き、一方の板材の凹陥部に他方の板材の突
出部を嵌入させて重ね合わせ、貫通穴内にその穴径より
も大きい径を持つポンチを圧入することにより突出部を
外径方向に拡張して突出部外周面を凹陥部内周面に圧着
させて、被接合板材を互いに接合する方法である。2. Description of the Related Art Conventionally, as a means for joining plate materials in a stacked state in which they are stacked in multiple layers, fastening by rivets or screws or welding by spot welding is generally known, but cost is low for parts that do not require strength. A relatively easy joining method is applied for the purpose of reducing An example of this joining method is the joining method described in JP-B-58-41131. This special public Sho 58-5
In the plate material joining method described in Japanese Patent No. 1131, the respective plate members to be joined are extruded so that the outer diameter of the protrusion is somewhat smaller than the inner diameter of the recess, and a through hole coaxial with the protrusion is punched out. The projection of the other plate is inserted into the concave part of one plate and overlapped with each other, and a punch having a diameter larger than the hole diameter is press-fitted into the through hole to expand the projection in the outer diameter direction and thereby the projection. In this method, the outer peripheral surface is pressure-bonded to the inner peripheral surface of the recessed portion to bond the plate materials to be bonded together.
【０００３】[0003]
【発明が解決しようとする課題】上記方法は各被接合板
材に同様の凹陥部、突出部及び貫通穴を成形する点で各
被接合板材毎で異なった加工をせずとも良い利点はある
が、被接合板材同士の接合が面と面との圧着に頼ってい
ることから、各板材の接合力は非常に弱く接合板材の突
出部を抜く方向に力が作用すると、容易に接合板材は分
離してしまう欠点がある。また、各被接合板材に成形さ
れる凹陥部、突出部及び貫通穴は板材を積層した状態で
成形することは不可能であり、接合前に板材一枚毎に成
形が必要で、面倒であるとともに工程の増加を招くこと
になり作業能率低下の原因となる欠点もある。The above method is advantageous in that it is not necessary to perform different processing for each plate material to be bonded in that the same concave portions, protrusions and through holes are formed in each plate material to be bonded. Since the joining of the plate materials to be joined relies on pressure bonding between the surfaces, the joining force of each plate material is very weak, and if a force acts in the direction to pull out the protruding part of the joining plate material, the joining plate materials are easily separated. There is a drawback that In addition, the recesses, protrusions, and through holes formed in each plate material to be joined cannot be formed in a state where the plate materials are laminated, and it is necessary to form each plate material before joining, which is troublesome. At the same time, there is a drawback that the number of processes is increased and the work efficiency is lowered.
【０００４】本発明は上記課題に鑑みて創成されたもの
であり、少ない工程で強力な接合力を得ることができ、
作業能率を向上させる板材の接合方法を提供することを
目的とする。The present invention was created in view of the above problems, and a strong joining force can be obtained in a small number of steps.
It is an object of the present invention to provide a method for joining plate materials that improves work efficiency.
【０００５】[0005]
【課題を解決するための手段】上記目的の達成に向け、
本発明の板材の接合方法は、積層状態にある被接合板材
にバーリング加工を施し、このバーリング加工によって
各被接合板材に同軸線上に貫通穴と筒状部とを成形し、
この筒状部の内で最も内側に位置する筒状部がこれより
外方向に成形される他の筒状部を被覆するように折返す
方法であり、詳しくは積層状態にある複数枚の被接合板
材をバーリング下型により支持する第１工程と、被接合
板材を押え部材により押えつつ、パンチを下降させて積
層状態にある被接合板材全てを貫く貫通穴及びパンチと
バーリング下型との間に延びる筒状部を成形するバーリ
ング加工を行なう第２工程と、下方からロール型を貫通
穴内に移動させて被接合板材を支持する第３工程と、ロ
ール型とバーリング下型とを上昇させるとともに押え部
材を下降させて、これらの間で被接合板材を押圧し、筒
状部の内で最も内側に位置する筒状部がこれより外方向
に成形される他の板材の筒状部を被覆するようにロール
型に沿って貫通穴の外周方向に折返しを行なう第４工程
とからなる板材の接合方法である。[Means for Solving the Problems] To achieve the above object,
The plate material joining method of the present invention is subjected to a burring process on the plate members to be joined in a laminated state, and a through hole and a tubular portion are coaxially formed on the respective plate members to be joined by this burring process,
This is a method in which the innermost tubular portion of the tubular portions is folded back so as to cover the other tubular portion that is molded outward from this tubular portion. The first step of supporting the joined plate material by the burring lower die, and the punching member is pressed down by the holding member to lower the punch to penetrate through all the joined plate materials in the stacked state and between the punch and the burring lower die. A second step of performing a burring process for forming a tubular portion extending to the first step, a third step of moving the roll die into the through hole from below to support the plate material to be joined, and a step of raising the roll die and the burring lower die. The pressing member is lowered to press the plate materials to be joined between them, and the innermost tubular portion of the tubular portion covers the tubular portion of another plate that is formed outward from the tubular portion. Through hole along the roll mold to A method of bonding a plate material made of a fourth step of performing the folding in the outer circumferential direction.
【０００６】[0006]
【作用】上記板材の接合方法を用いて板材の接合を行な
うと、積層状態にある板材にバーリング加工を施し、こ
のバーリング加工によって各板材に同軸線上に貫通穴と
筒状部とを成形し、この筒状部の内で最も内側に位置す
る筒状部がこれより外方向に成形される他の板材の筒状
部を被覆するように折返して板材の接合を行っているた
め、板材を積層した状態からそのまま接合することがで
き、また接合した板材にどの方向から力が作用しても、
接合された板材が容易に分離することがない。When the plate members are joined by using the plate member joining method described above, the plate members in the laminated state are subjected to burring, and the burring process forms a through hole and a cylindrical portion on each plate member coaxially. Since the innermost tubular portion of this tubular portion is folded back to join the tubular portions of the other plate materials that are molded outward from this, the plate materials are laminated. Can be directly joined from the joined state, and no matter which direction the force acts on the joined plate materials,
The joined plate materials are not easily separated.
【０００７】[0007]
【実施例】以下図面に基づき本発明の一実施例を説明す
る。図２において１は本発明の板材の接合方法を実施す
る上で使用する接合機構であり、図示しない油圧機構の
作動によって２段階に昇降動作が可能な上型２と、この
上型２と同軸線上の下方に位置し、上型２と同様、図示
しない油圧機構によって２段階に昇降動作が可能な下型
３とからなる。前記上型２は円筒状の押え部材２ａとこ
の押え部材２ａの内径に挿通するパンチ２ｂとから構成
されている。これら上型２におけるパンチ２ｂ及び押え
部材２ａは油圧機構の作動によってそれぞれ独立して昇
降動作が可能である。また、下型３は前記押え部材２ａ
とほぼ同一の外径を有する円筒状のバーリング下型３ａ
と、このバーリング下型３ａの前記押え部材２ａの内径
よりも大なる内径部に挿通するロール型３ｂとからな
る。この下型３におけるロール型３ｂの先端部は上部が
平坦に形成された円錐状をなす。これら下型３における
バーリング下型３ａとロール型３ｂとは前記上型２のパ
ンチ２ｂ及び押え部材２ａ同様、上型２を動作させる油
圧機構とは別の油圧機構によりそれぞれ独立して昇降動
作を行う。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 2, reference numeral 1 denotes a joining mechanism used for carrying out the joining method of the plate materials of the present invention, and an upper die 2 which can be moved up and down in two stages by the operation of a hydraulic mechanism (not shown), and the upper die 2 is coaxial. Like the upper die 2, the lower die 3 is located on the lower side of the line and can be moved up and down in two steps by a hydraulic mechanism (not shown). The upper die 2 is composed of a cylindrical pressing member 2a and a punch 2b which is inserted into the inner diameter of the pressing member 2a. The punch 2b and the pressing member 2a of the upper die 2 can be independently moved up and down by the operation of the hydraulic mechanism. Further, the lower mold 3 is the pressing member 2a.
Cylindrical burring lower mold 3a having substantially the same outer diameter as
And a roll die 3b that is inserted into an inner diameter portion of the burring lower die 3a that is larger than the inner diameter of the pressing member 2a. The tip of the roll die 3b of the lower die 3 has a conical shape with a flat upper portion. The burring lower die 3a and the roll die 3b in the lower die 3 are independently moved up and down by a hydraulic mechanism different from the hydraulic mechanism for operating the upper die 2, like the punch 2b and the pressing member 2a of the upper die 2. To do.
【０００８】本発明の板材の接合方法は上記構成の接合
機構１を使用して実施されるもので、まず第１工程とし
て図１（ａ）に示すように薄い金属性の板材を積層状に
２枚重ね合わせた被接合板材４をバーリング下型３ａ上
に載置する。この第１工程において、ロール型３ｂの先
端部上端面は被接合板材４の下面に接した状態で待機す
る。The plate material joining method of the present invention is carried out by using the joining mechanism 1 having the above-described structure. First, as a first step, thin metal plate materials are laminated as shown in FIG. 1 (a). The two plate members 4 to be joined are placed on the burring lower die 3a. In the first step, the upper end surface of the tip end portion of the roll die 3b stands by while contacting the lower surface of the plate material 4 to be joined.
【０００９】第１工程終了後、図１（ｂ）に示す第２工
程を行う。第２工程では第１工程でバーリング下型３ａ
上に載置された被接合板材４を上方から押え部材２ａに
よって変形を生じない程度に押圧して後、パンチ２ｂを
下降させて２枚の被接合板材４を貫通する貫通穴４ａを
成形するバーリング加工を行なう。このバーリング加工
時にバーリング下型３ａには油圧がかけられて常時上方
への付勢力を保っているが、ロール型３ｂは開放された
状態にあって、このときパンチ２ｂに押されて下方に下
降する。バーリング加工が施された被接合板材４には、
貫通穴４ａの成形に伴ってパンチ２ｂが被接合板材４を
貫くまでにパンチ２ｂの下降によって下方に変形した部
分が、パンチ２ｂ外径とバーリング下型３ａ内径との間
に残留して筒状部４ｂが形成されている。この筒状部４
ｂは２枚の被接合板材双方に成形され、上面側に位置す
る板材の筒状部４ｂが下面側の板材の筒状部４ｂに密着
して二重に構成される。After the completion of the first step, the second step shown in FIG. 1 (b) is performed. In the second step, the burring lower mold 3a is used in the first step.
After pressing the plate material 4 to be bonded placed thereon from above by the pressing member 2a to such an extent that deformation does not occur, the punch 2b is lowered to form the through hole 4a penetrating the two plate materials 4 to be bonded. Perform burring. At the time of this burring process, hydraulic pressure is applied to the burring lower die 3a to keep the upward urging force at all times, but the roll die 3b is in an open state, and at this time, it is pushed by the punch 2b and lowered downward. To do. The joined plate material 4 that has been burred is
A part of the punch 2b which is deformed downward by the lowering of the punch 2b by the time the punch 2b penetrates the plate material 4 to be joined due to the formation of the through hole 4a remains between the outer diameter of the punch 2b and the inner diameter of the burring lower die 3a and is tubular. The portion 4b is formed. This tubular part 4
b is formed on both of the two plate members to be joined, and the tubular portion 4b of the plate member located on the upper surface side is in close contact with the tubular portion 4b of the plate member on the lower surface side to form a double layer.
【００１０】第２工程終了後、続いて図１（ｃ）に示す
第３工程を行なう。第３工程は前記第２工程において貫
通穴４ａ及び筒状部４ｂの成形された被接合板材４をロ
ール型３ｂによって支持する工程であって、前記第２工
程のパンチ２ｂの下降によってバーリング下型３ａ内に
下降していたロール型３ｂに油圧をかけて上昇させてそ
の先端部を被接合板材の貫通穴４ａに侵入させるととも
に、貫通穴４ａに係合して被接合板材４を支持する。こ
のとき、バーリング下型３ａは動作せず、被接合板材４
下面はバーリング下型３ａから離脱してロール型３ｂに
のみ支持され、一方で押え部材２ａの油圧は解除されて
押え部材２ａはその自重により被接合板材４上面に当接
している。またこのとき、パンチ２ｂにかけられる油圧
も解除されており、パンチ２ｂはロール型３ｂに押し上
げられる形で押え部材２ａ内に後退する。なお、ロール
型３ｂの上昇はロール型３ｂの先端部底面がバーリング
下型３ａ上端面と同一面上に達したときに停止し、この
状態において第３工程を完了する。After the completion of the second step, the third step shown in FIG. 1C is subsequently performed. The third step is a step of supporting the bonded plate material 4 having the through hole 4a and the tubular portion 4b formed in the second step by the roll die 3b, and the burring lower die is formed by lowering the punch 2b in the second step. Hydraulic pressure is applied to the roll die 3b that has descended in 3a to raise it so that its tip portion penetrates into the through hole 4a of the joined plate material and engages with the through hole 4a to support the joined plate material 4. At this time, the burring lower die 3a does not operate, and the joined plate material 4
The lower surface is separated from the burring lower mold 3a and supported only by the roll mold 3b, while the hydraulic pressure of the pressing member 2a is released and the pressing member 2a is in contact with the upper surface of the plate member 4 to be joined by its own weight. At this time, the hydraulic pressure applied to the punch 2b is also released, and the punch 2b retracts into the holding member 2a in a form of being pushed up by the roll die 3b. The roll die 3b is stopped from rising when the bottom surface of the tip of the roll die 3b reaches the same plane as the top surface of the burring lower die 3a, and the third step is completed in this state.
【００１１】第３工程終了後、最後に第４工程が行われ
る。第４工程は図１（ｄ）に示すように被接合板材４の
筒状部４ｂを貫通穴４ａの外周方向に折返して２枚の被
接合板材４の接合を行なう工程であり、第３工程完了状
態にあるロール型３ｂ及びバーリング下型３ａ相互の位
置関係を保った状態でこれらに油圧をかけて上昇させる
と同時に、押え部材２ａにも油圧をかけてこれを下方に
付勢し、被接合板材４に形成された筒状部４ｂにおいて
最も内径側の筒状部４ｂが外側の筒状部４ｂを包むよう
に、即ち上面側の板材の筒状部４ｂが下面側の板材の筒
状部４ｂを被覆するように筒状部４ｂを折返す加工が行
われる。このとき、筒状部４ｂはロール型３ｂ先端部が
円錐形状であることから、これに沿って徐々に拡開し、
最終的にはバーリング下型３ａの上面によって被接合板
材４下面に押し付けられる。After the end of the third step, the fourth step is finally performed. As shown in FIG. 1D, the fourth step is a step of joining the two joined plate members 4 by folding back the tubular portion 4b of the joined plate members 4 in the outer peripheral direction of the through hole 4a. The roll die 3b and the burring lower die 3a in the completed state are hydraulically moved upward while maintaining their relative positions, and at the same time, the pressing member 2a is also hydraulically urged downward so that In the tubular portion 4b formed in the joining plate material 4, the tubular portion 4b on the innermost side wraps the outer tubular portion 4b, that is, the tubular portion 4b of the plate material on the upper surface side is the tubular portion of the plate material on the lower surface side. Processing for folding back the tubular portion 4b is performed so as to cover 4b. At this time, since the tip of the roll die 3b of the tubular portion 4b has a conical shape, the tubular portion 4b gradually expands along this,
Finally, the upper surface of the burring lower die 3a is pressed against the lower surface of the plate material 4 to be joined.
【００１２】以上の工程からなる板材の接合方法により
板材の接合を行なうと、バーリング加工と、このバーリ
ング加工によって成形された筒状部４ｂの折返し作業と
を行なう極めて簡単な方法で、被接合板材４にあらかじ
め１枚毎に下処理をすることなくそのまま積層した状態
で簡単に接合することが可能となる。また各板材は筒状
部４ｂの折返しによって互いに保持されるため、一旦板
材同士が接合するとどのような方向から力が作用しても
容易には分離しない特性を示す。When the plate materials are joined by the plate material joining method comprising the above steps, the burring process and the work of folding back the tubular portion 4b formed by the burring process are carried out by a very simple method. It is possible to simply join the sheets of No. 4 in a laminated state as they are without performing pretreatment for each sheet in advance. Further, since the respective plate members are held together by the folded back of the tubular portion 4b, once the plate members are joined, they exhibit the characteristic that they are not easily separated even if a force is applied from any direction.
【００１３】なお、本実施例においては押え部材とパン
チとロール型とバーリング下型とを使用して被接合板材
の接合を行う方法を説明したが、何もこの方法ばかりで
なく、積層状態にある被接合板材にバーリング加工を施
して被接合板材全てに貫通穴及び筒状部を成形し、この
筒状部の内で最も内側に位置する筒状部がこれより外方
向に成形される他の筒状部を被覆するように折返して板
材の接合を行う方法であれば得られる効果は同様であ
る。このような方法としては、例えば、第１工程及び第
２工程における被接合板材の下方からの支持をバーリン
グ下型のみで行い、被接合板材にバーリング加工を施し
て筒状部を成形し、続く第３工程及び第４工程では、バ
ーリング下型に代えてバーリング下型の外径に相当する
外径を有し、かつ本実施例で述べた形状の先端部を有す
るロール型によって、被接合板材の筒状部の折返しを行
う板材の接合方法が考えられる。また、本実施例におい
て、接合機構は油圧機構の作動によって動作するように
述べたが、何もこれに限定されるものではなく、空気圧
機構、その他の増力機構等を使用しても得られる効果は
同様である。In this embodiment, the method of joining the plate members to be joined by using the pressing member, the punch, the roll die and the burring lower die has been described. However, not only this method but also the laminated state A burring process is applied to a plate to be joined to form a through hole and a tubular part in all the plates to be joined, and the innermost tubular part of the tubular part is formed outward from this. The same effect can be obtained as long as it is a method of joining the plate materials by folding back so as to cover the tubular portion. As such a method, for example, in the first step and the second step, the plate to be joined is supported from below only by the burring lower die, and the plate to be joined is subjected to burring processing to form a tubular portion. In the third step and the fourth step, the plate material to be joined is manufactured by a roll die having an outer diameter corresponding to the outer diameter of the burring lower die and having the tip end portion having the shape described in the present embodiment. A method of joining the plate materials in which the tubular portion of is folded back is conceivable. Further, in the present embodiment, the joining mechanism is described to operate by the operation of the hydraulic mechanism, but the present invention is not limited to this, and an effect obtained by using a pneumatic mechanism or other boosting mechanism is also possible. Is the same.
【００１４】[0014]
【発明の効果】以上詳述した板材の接合方法では、積層
状態にある板材にバーリング加工を施し、このバーリン
グ加工によって各板材に同軸線上に貫通穴と筒状部とを
成形し、この筒状部の内で最も内側に位置する筒状部が
これより外方向に成形される他の板材の筒状部を被覆す
るように折返して板材の接合を行っているため、板材を
積層した状態からそのまま接合することができ、非常に
効率がよく、このことによって板材一枚毎に加工を行う
必要もなくなり、その分、接合作業の工程を減少させる
ことが可能となり、作業能率の向上を図ることができる
等の効果がある。また、接合後の板材は筒状部の折返し
によって互いに保持されるため、接合された板材にどの
方向から力が作用しても、接合された板材が容易に分離
することがなく、板材相互の強力な接合を得ることが可
能となる効果がある。In the plate material joining method described in detail above, the plate materials in the laminated state are subjected to burring processing, and the burring processing is used to form through holes and tubular portions on the coaxial lines of the respective plate materials. Since the innermost tubular part of the parts is folded back to join the plate parts so as to cover the tubular parts of the other plate parts molded outward from this, the plate parts are stacked. It is possible to join as it is, and it is very efficient.Therefore, it is not necessary to process each plate material one by one, and it is possible to reduce the number of joining work steps accordingly, aiming to improve work efficiency. It has the effect of being able to In addition, since the joined plate materials are held together by the folded-back tubular portions, the joined plate materials do not easily separate from each other regardless of the direction of the force applied to the joined plate materials, and the plate materials are not separated from each other. There is an effect that a strong bond can be obtained.
【図１】 本発明に係る板材の接合方法の各工程を示す
要部断面図であって（ａ）は第１工程、（ｂ）は第２工
程、（ｃ）は第３工程、（ｄ）は第４工程をそれぞれ示
す。FIG. 1 is a cross-sectional view of a main part showing each step of a method for joining plate materials according to the present invention, in which (a) is a first step, (b) is a second step, (c) is a third step, and (d). ) Indicates the fourth step, respectively.
【図２】 本発明に係る板材の接合方法を実施する上で
使用される接合機構の要部断面図である。FIG. 2 is a cross-sectional view of a main part of a joining mechanism used for carrying out the method for joining plate materials according to the present invention.
１ 接合機構 ２ 上型 ２ａ 押え部材 ２ｂ パンチ ３ 下型 ３ａ バーリング下型 ３ｂ ロール型 ４ 被接合板材 ４ａ 貫通穴 ４ｂ 筒状部 1 Joining Mechanism 2 Upper Die 2a Pressing Member 2b Punch 3 Lower Die 3a Burring Lower Die 3b Roll Die 4 Bonded Plate 4a Through Hole 4b Cylindrical Part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 白波瀬 康夫 京都府綾部市井倉町梅ケ畑20番地 日東精 工株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Shiranase 20 Umegatake, Ikura Town, Ayabe City, Kyoto Prefecture Nitto Seiko Co., Ltd.
Claims (2)
ーリング加工を施し、このバーリング加工によって各被
接合板材に同軸線上に貫通穴と筒状部とを成形し、 この筒状部の内で最も内側に位置する筒状部がこれより
外方向に成形される他の筒状部を被覆するように折返し
たことを特徴とする板材の接合方法。1. A burring process is performed on a plurality of plate members to be bonded in a laminated state, and a through hole and a cylindrical part are coaxially formed in each plate member to be bonded by the burring process. In the method for joining plate members, the innermost tubular portion is folded back so as to cover another tubular portion that is formed outward from the inner tubular portion.
ーリング下型により支持する第１工程と、 積層状態にある被接合板材を押え部材により押えつつ、
パンチを下降させて被接合板材全てを貫く貫通穴及びパ
ンチとバーリング下型との間に延びる筒状部を成形する
バーリング加工を行なう第２工程と、 下方からロール型を貫通穴内に移動させて被接合板材を
支持する第３工程と、 ロール型とバーリング下型とを上昇させるとともに押え
部材を下降させて、これらの間で被接合板材を押圧し、
筒状部の内で最も内側に位置する筒状部がこれより外方
向に成形される他の筒状部を被覆するようにロール型に
沿って貫通穴の外周方向に折返す第４工程とからなるこ
とを特徴とする請求項１に記載の板材の接合方法。2. A first step of supporting a plurality of laminated plate members in a laminated state by a burring lower die, and pressing the laminated plate members in a laminated state by a pressing member,
The second step of performing a burring process to lower the punch to form a through hole that penetrates through all the plate materials to be joined and a tubular portion that extends between the punch and the burring lower die, and move the roll die into the through hole from below. The third step of supporting the plate material to be joined, the roll die and the burring lower die are raised and the pressing member is lowered, and the sheet material to be joined is pressed between them.
A fourth step of folding back the innermost tubular portion of the tubular portion in the outer peripheral direction of the through hole along the roll die so as to cover the other tubular portion that is molded outward from the tubular portion. The method for joining plate members according to claim 1, wherein the plate members are joined together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20788194A JPH0839170A (en) | 1994-07-27 | 1994-07-27 | Method for joining sheet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20788194A JPH0839170A (en) | 1994-07-27 | 1994-07-27 | Method for joining sheet material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0839170A true JPH0839170A (en) | 1996-02-13 |
Family
ID=16547109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20788194A Pending JPH0839170A (en) | 1994-07-27 | 1994-07-27 | Method for joining sheet material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0839170A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999046069A1 (en) * | 1998-03-10 | 1999-09-16 | Josef Welser Ohg Profilier- Und Stanzwerk | Method for producing an eyelet |
| KR20020095644A (en) * | 2001-06-15 | 2002-12-28 | 현대자동차주식회사 | Piercing press |
| JP2018158385A (en) * | 2013-07-31 | 2018-10-11 | アルガイエル・ヴェルケ・ゲーエムベーハー | Device for forming metal |
-
1994
- 1994-07-27 JP JP20788194A patent/JPH0839170A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999046069A1 (en) * | 1998-03-10 | 1999-09-16 | Josef Welser Ohg Profilier- Und Stanzwerk | Method for producing an eyelet |
| US6904659B1 (en) | 1998-03-10 | 2005-06-14 | Welser Profile Ag | Method for producing an eyelet |
| KR20020095644A (en) * | 2001-06-15 | 2002-12-28 | 현대자동차주식회사 | Piercing press |
| JP2018158385A (en) * | 2013-07-31 | 2018-10-11 | アルガイエル・ヴェルケ・ゲーエムベーハー | Device for forming metal |
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