JP2867850B2 - Manufacturing method of cylindrical member for cylindrical rubber vibration insulator and window member with window - Google Patents

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、車両のエンジンマウン
ト、キャブマウント、サスペンションブッシュ等におけ
る外筒金具、スリーブ及びブラケットの筒部等、筒形防
振ゴムに用いられる筒部材の製法及び窓あき筒部材の製
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a cylindrical member used for a cylindrical vibration isolating rubber, such as an outer cylinder fitting, a cylinder part of a sleeve and a bracket in a vehicle engine mount, a cab mount, a suspension bush and the like, and a window opening. Manufacture of cylindrical member
It is about the law .

【０００２】[0002]

【従来の技術】従来、かかる、円筒形防振ゴムに用いら
れる筒部材あるいは窓あき筒部材の製法としては、例え
ば、特開平５ー１７７３４８号公報に記載されたものが
知られている。これに用いられている筒部材は窓があい
ており、液入り筒形防振ゴムの内筒金具の外側に、ゴム
弾性体を加硫接着するために窓が必要である。そして、
この窓あき筒部材は絞り加工することにより、ゴム弾性
体に予備圧縮を付与して用いられる。この窓あき筒部材
は、仕上がり周寸法に見合う横幅を持つ板金を筒状に加
工し、筒状に加工した突き合わせ部をタングステン・イ
ナートガス・アーク溶接で接合する筒形防振ゴム用窓あ
き筒部材の製法を構成したものである。なお、これに用
いられる板金には窓に対応する穴が設けられており、筒
状に加工した突き合わせ部は板金の一方の側面から他方
の側面に延び連続して溶接接合されている。 2. Description of the Related Art Conventionally, as a method of manufacturing such a cylindrical member or a windowed cylindrical member used for a cylindrical vibration isolating rubber, for example, a method described in Japanese Patent Laid-Open No. Hei 5-177348 is known. The cylindrical member used for this has a window, and a window is necessary outside the inner cylindrical metal fitting of the liquid-containing cylindrical vibration isolating rubber for vulcanizing and bonding the rubber elastic body. And
The windowed cylindrical member is used by applying a preliminary compression to the rubber elastic body by drawing. The MadoAki tubular member, finishing the peripheral sheet metal having a width commensurate with the size and processed into a cylindrical shape, tubular shape processed butt portion tungsten-inert gas arc welding tubular anti-vibration rubber window perforated tube to be joined by It constitutes the manufacturing method of the member. For this purpose
The sheet metal is provided with holes corresponding to the windows,
The butted part processed into a shape is from one side of the sheet metal to the other
And are continuously welded and joined.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、この製
法はタングステン・イナートガス・アーク溶接で接合し
た接合部が溶接時に硬化し、且つ脆弱化してしまうの
で、ゴム弾性体に予備圧縮を付与するために、この製造
された窓あき筒部材を実質的に外周から求心方向に外径
比１０％程度の塑性変形させる絞り加工時に窓あき筒部
材の接合材の近辺が内側に凹むように変形したり、亀裂
を生じ易いので延性の優れた材料、具体的には機械的特
性としての伸びが３０％以上の材料を選択する必要があ
ったり、また窓あき筒部材としての真円形が損なわれ、
シール性を損なう等、筒形防振ゴムの組立に関連して多
くの不具合いを有していた。However, in this manufacturing method, the joints formed by the tungsten inert gas arc welding are hardened and weakened at the time of welding. At the time of the drawing process in which the manufactured windowed cylinder member is substantially plastically deformed from the outer periphery to the centrifugal direction with an outer diameter ratio of about 10%, the vicinity of the joining material of the windowed cylinder member is deformed inward or cracked. Therefore, it is necessary to select a material having excellent ductility, specifically, a material having an elongation of 30% or more as a mechanical property, or a true circular shape as a windowed cylinder member is damaged.
There were many inconveniences related to the assembly of the cylindrical vibration isolating rubber, such as impairing the sealing performance.

【０００４】本発明は上記事情に鑑み発明されたもので
あって、給電のために電極に筒状体 または半筒体を保持
するためのクランプを必要とせず、従来よりも極めて容
易に溶接接合でき、且つ筒形防振ゴムに用いられる筒部
材を実質的に絞り加工する際、筒部材に用いられる材料
の機械特性としての伸びの制限を緩和できると共に、接
合部近辺に凹み等の歪みや亀裂が生じ難い筒形防振ゴム
用窓あき筒部材の製法を提供することを目的とする。さ
らに望ましい形態として、窓あき筒部材に用いられる材
料の機械特性としての伸びの制限を緩和できると共に、
接合部近辺に凹み等の歪みや亀裂が生じるを抑制できる
ことは勿論のこと、従来よりも溶接接合部を短くでき、
短時間で接合できる筒形防振ゴム用窓あき筒部材の製法
を提供することを目的とする。The present invention has been made in view of the above circumstances, and holds a cylindrical or semi-cylindrical body on an electrode for power supply.
It does not require a clamp to perform
It can be easily welded and joined, and when the cylindrical member used for the cylindrical vibration isolating rubber is substantially drawn, the restriction of elongation as a mechanical property of the material used for the cylindrical member can be relaxed, and a dent near the joint is provided. It is an object of the present invention to provide a method for producing a cylindrical member with a window for a vibration-proof rubber which is unlikely to cause distortion or cracks. Sa
As a more desirable form, the limitation of elongation as a mechanical property of the material used for the windowed tubular member can be relaxed,
Distortion or cracks such as dents in the vicinity of the junction it is possible to suppress the raw Jill
Of course, the welded joint can be shorter than before,
It is an object of the present invention to provide a method of manufacturing a window- shaped cylindrical member for a rubber vibration isolator which can be joined in a short time .

【０００５】[0005]

【課題を解決するための手段】本発明は上記目的を達成
するために、第１の手段は、筒形防振ゴムに用いられる
筒部材の製法であって、前記筒部材の仕上がり周寸法に
見合う横幅をもつ金属製の板材の横幅方向の端同志を突
き合わせて筒状体に曲げ加工し、一対の対向平面を有す
ると共にそれぞれの該対向平面の一部を形成する対向す
る一対の電極を一体的に備え、且つそれぞれの該対向平
面に前記筒部材の外周が嵌合する内周面を有する凹部を
備えている筒状の二分割治具を用いて、該筒状体を該凹
部に嵌着保持し、一方の治具と他方の治具を相対的に接
近させ、該筒状体の該端同志を該二分割治具の該一対の
対向平面間に位置せしめて、該対向する一対の電極を通
じて、該筒状体の一方の端の部分から他方の端の部分に
溶接電流を流すことにより、該端同志を突き合わせた突
き合わせ部を突き合わせつつ互いに溶け込ませる抵抗溶
接にて接合することを特徴とする筒形防振ゴム用筒部材
の製法を構成したものである。According to the present invention, in order to achieve the above-mentioned object, the first means is used for a cylindrical vibration-proof rubber.
A method of cylindrical member, the cylindrical butt end comrades lateral width direction of the metal plate having a width bending processed into cylindrical body commensurate with the finished circumferential dimension of the member, having a pair of opposing planar surfaces
Opposing surfaces forming part of each of the opposing planes.
Provided integrally with each other, and
A concave portion having an inner peripheral surface into which the outer periphery of the cylindrical member fits.
Using the cylindrical two-piece jig provided, the cylindrical body is
Part, and one jig and the other jig are relatively connected.
And bringing the ends of the cylindrical body into close contact with the pair of jigs
It is located between the opposing planes, and the pair of opposing electrodes is passed through.
Thus, from one end of the tubular body to the other end
By passing a welding current is obtained by constituting the method of the cylindrical anti-vibration rubber for tube member characterized by joining in each other dissolve to resistance welding while abutting the abutting portion abutting the said end comrades.

【０００６】第２の手段は、予め一対の半筒体を形成し
た後、該一対の半筒体から筒形防振ゴムに用いられる筒
部材の製法であって、前記筒部材の仕上がり周寸法の半
分に見合う横幅になるように、予め金属製の板材を２個
打抜き加工し、該それぞれの板材をそれぞれ前記半筒体
に曲げ加工し、一対の対向平面を備えると共にそれぞれ
の対向平面に前記筒部材の外周面が嵌 合する内周面を有
する対向する一対の凹部を備えた一対の電極からなる筒
状の二分割治具を用いて、該半筒体のそれぞれを該一対
の凹部に筒状に嵌着保持し、一方の治具と他方の治具を
相対的に接近させ、該一対の半筒体の両端同志を該一対
の対向平面間に位置せしめて、一方半筒体から他方の半
筒体に溶接電流を流すことにより、該一対の半筒体の両
端同志を突き合わせた突き合わせ部を突き合わせつつ互
いに溶け込ませる抵抗溶接で接合することを特徴とする
筒形防振ゴム用窓あき筒部材の製法を構成したものであ
る。第３の手段は、筒形防振ゴム用いられる窓あき筒部
材の製法であって、前記窓あき筒部材の仕上がり周寸法
に見合う横幅をもつ金属製の板材を形成する板材形成工
程と、該板材を曲げ加工して、該板材の横幅方向両端同
志が突き合わされる突き合わせ部を有する筒状体に形成
する筒状体形成工程と、該筒状体を、電極をもつ対向す
る一対の治具で嵌着保持しつつ、該筒状体の該突き合わ
せ部を抵抗溶接接合する溶接接合工程と、を備えている
筒形防振ゴム用筒部材の製法において、 該板材が該板材
形成工程時に、少なくとも横幅方向一端に両側を残して
横幅方向に凹んだ切欠き凹部が形成され、該溶接接合工
程時に該両側を残して該切欠き凹部を除いた該両側の突
き合わせ部を抵抗溶接接合することにより該筒部材に窓
を形成することを特徴とする筒形防振ゴム用窓あき筒部
材の製法を構成したものである。第４の手段は、予め一
対の半筒体を形成した後、該一対の半筒体から筒形防振
ゴムに用いられる窓あき筒部材の製法であって、 前記
窓あき筒部材の仕上がり周寸法の半分に見合う横幅をも
つ金属製の２個一対の板材を形成する板材形成工程と、
該２個一対の板材をそれぞれ曲げ加工し、該それぞれの
板材の横幅方向両端同志が突き合わされる突き合わせ部
を有する前記半筒体を形成する半筒体形成工程と、それ
ぞれの該半筒体を、電極をもつ対向する一対の治具で筒
状に嵌着保持しつつ、該半筒体のそれぞれの該突き合わ
せ部を突き合わせて抵抗溶接接合する溶接 接合工程と、
を備えている筒形防振ゴム用筒部材の製法において、 該
それぞれの板材が該板材形成工程時に、該２個一対の板
材の少なくとも一方の板材の横幅方向一端に両側を残し
て横幅方向に凹んだ切欠き凹部が形成され、該溶接接合
工程時に該切欠き凹部を除いた該両側の突き合わせ部を
抵抗溶接接合することにより該筒部材に窓を形成するこ
とを特徴とする筒形防振ゴム用窓あき筒部材の製法を構
成したものである。The second means is to form a pair of half cylinders in advance.
After that, the pair of half cylinders is
A method of members, half of the finished circumferential dimensions of the tubular member
2 so that the lateral width, a pre-metal plate to meet the min
Punching, each said plate material is said half cylinder
And a pair of opposed flat surfaces
Have the inner peripheral surface outer peripheral surface is fitted in the tubular member to the opposing planar surfaces of the
Consisting of a pair of electrodes having a pair of opposed concave portions
Each of the half-cylinders is paired with a pair of jigs
The jig and the other jig are fitted and held in a cylindrical shape
Relatively close to each other, and connect both ends of the pair of half cylinders to the pair
From one half cylinder to the other half
By applying a welding current to the cylinder, the two half cylinders
A method for manufacturing a cylindrical member with a window for a vibration-proof rubber is characterized in that it is joined by resistance welding in which butting portions having ends butted against each other are melted together. A third means is a method of manufacturing a windowed cylindrical member using a cylindrical vibration-isolating rubber, and a plate material forming process for forming a metal plate material having a width corresponding to a finished peripheral dimension of the windowed cylindrical member.
And bending the plate material so that both ends in the width direction of the plate material are the same.
Formed into a cylindrical body with a butted part where the aspirations are abutted
A cylindrical body forming step, wherein the cylindrical body is opposed to a body having electrodes.
While the cylindrical body is fitted and held by a pair of jigs,
And a welding step of resistance welding the contact portion .
In the method of manufacturing a tubular member for a tubular anti-vibration rubber, the plate material is the plate material.
During the forming process, leave both sides at least at one end in the width direction
A notch recess recessed in the width direction is formed.
The projections on both sides except for the notched recess at the time
A window is formed on the cylindrical member by resistance welding the joining portion.
The method for manufacturing a cylindrical member with a window for a vibration-proof rubber is characterized by forming the following . Fourth means in advance one
After forming the pair of half-cylinders, the pair of half-cylinders are used to form a cylindrical vibration isolator.
A method for manufacturing a windowed cylinder member used for rubber, wherein a width corresponding to half of a finished peripheral dimension of the windowed cylinder member is adjusted.
A plate material forming step of forming a pair of two metal plate materials;
Each of the two pair of plate members is bent, and the respective
Butt where both ends in the width direction of the plate are butted
A semi-cylindrical body forming step of forming the semi-cylindrical body having, it
Each of the half-cylinders is cylinder-mounted with a pair of opposed jigs having electrodes.
The butting of each of the half-cylinder bodies while
A welding joining process in which the butt portions are joined by resistance welding ,
In preparation of the tubular anti-vibration rubber for tube member and a, the
When each plate is formed in the plate forming step, the pair of two plates
Leave both sides at one end in the width direction of at least one of the plates
A notch recess is formed which is recessed in the width direction.
At the process, the butted portions on both sides excluding the notched concave portion
Forming a window in the cylindrical member by resistance welding.
And a method for producing a cylindrical member with a window for rubber vibration isolating rubber.

【０００７】[0007]

【作用】上述の如く、第１の手段は金属製の板材の横幅
方向の端同志を突き合わせて筒状体に曲げ加工し、一対
の対向平面を有すると共にそれぞれの該対向平面の一部
を形成する対向する一対の電極を一体的に備え、且つそ
れぞれの該対向平面に所望の筒部材の外周が嵌合する内
周面を有する凹部を備えている筒状の二分割治具を用い
て、一方の治具と他方の治具を相対的に接近させ、該筒
状体の該端同志を該二分割治具の該一対の対向平面間に
位置せしめて、該対向する一対の電極を通じて、該筒状
体の一方の端の部分から他方の端の部分に溶接電流を流
すことにより、端同志を突き合わせた突き合わせ部を突
き合わせつつ互いに溶け込ませる抵抗溶接にて接合する
ようにしたので、筒状体は予め、所望の筒部材とほぼ同
形に曲げ加工できるので、この筒状体は二分割治具の所
定の位置に容易に嵌着保持でき、且つ筒状体の端同志を
突き合わせた突き合わせ部を突き合わせつつ互いに溶け
込ませる抵抗溶接にて接合した際、この二分割治具によ
り筒状体が所望の筒部材の形状及び寸法になるように筒
部材が保形形成されと共に、製造された筒部材を二分割
治具から容易に取り出すことができ、極めて容易に且つ
精度良く筒形防振ゴム用筒部材を製造することができ
る。また、請求項１の発明は、溶接の際に流れる通電電
流を調整して突き合わせ部近辺での温度上昇を抑制で
き、突き合わせ部近辺が硬化して脆弱化するのを抑制す
できる、また一旦、分割治具に嵌着保持して形成された
筒形防振ゴム用筒部材を、分割治具で嵌着保持したまま
再度通電することにより、接合近辺を再加熱して容易に
テンパー処理を行なうことができ、このようにテンパー
処理を行な って得られた筒形防振ゴム用筒部材はその外
周から実質的に求心方向に縮径する絞り加工時に、接合
部近辺が内側に凹む変形を抑制できると共に、亀裂が生
じるのを抑制でき、板材の材料を選択するための機械特
性の制限も緩和できる。第２の手段では、上の如く、所
望の筒部材の仕上がり周寸法の半分に見合う横幅になる
ように、予め金属製の板材を２個打抜き加工し、それぞ
れの板材をそれぞれ前記半筒体に曲げ加工し、一対の対
向平面を備えると共にそれぞれの対向平面に前記筒部材
の外周面が嵌合する内周面を有する対向する一対の凹部
を備えた一対の電極からなる筒状の二分割治具を用い
て、該半筒体のそれぞれを該一対の凹部に筒状に嵌着保
持し、一方の治具と他方の治具を相対的に接近させ、該
一対の半筒体の両端同志を該一対の対向平面間に位置せ
しめて、一方半筒体から他方の半筒体に溶接電流を流す
ことにより、該一対の半筒体の両端同志を突き合わせた
突き合わせ部を突き合わせつつ互いに溶け込ませる抵抗
溶接で接合して、筒形防振ゴム用筒部材を製造したの
で、２分割の筒状体は予め、所望の筒部材とほぼ同形に
曲げ加工でき、この２分割の筒状体を二分割治具の所定
の位置に容易に嵌着保持でき、且つ２分割の筒状体の両
端同志を突き合わせた突き合わせ部を突き合わせつつ互
いに溶け込ませる抵抗溶接にて接合した際、この二分割
治具により２分割の筒状体が所望の筒部材の形状及び寸
法になるように筒部材が保形形成されと共に、製造され
た筒部材を二分割治具から容易に取り出すことができ、
極めて容易に且つ精度良く筒形防振ゴム用窓あき筒部材
製造することができる。また、請求項２の発明は、請求
項１の発明と同様に、突き合わせ部近辺が硬化して脆弱
化するのを抑制すできると共に、一旦、分割治具に嵌着
保持して形成された筒形防振ゴム用筒部材を、分割治具
で嵌着保持したまま、接合近辺を容易にテンパー処理を
行なうことができ、このようにテンパー処理を行なって
得られた筒部材を用いて製造または組立てられた筒形防
振ゴムのゴム弾性体に予備圧縮を付与するために、実質
的に筒部材をその外周から実質的に求心方向に縮径する
絞り加工時に、接合部近辺が内側に凹む変形を抑制でき
ると共に、亀裂が生じるのを抑制でき、板材の材料を選
択するための機械特性の制限も緩和できる。第３の手段
は、板材が該板材形成工程時に、少なくとも横幅方向一
端に両側を残して横幅方向に凹んだ切欠き凹部が形成さ
れ、、電極をもつ対向する一対の治 具で筒状体を嵌着保
持しつつ、該筒状体の該突き合わせ部を抵抗溶接接合す
る溶接接合工程時に該両側を残して該切欠き凹部を除い
た該両側の突き合わせ部を抵抗溶接接合することにより
該筒部材に窓を形成するようにしたので、抵抗溶接にて
接合する際、この二分割治具により筒状体が所望の筒部
材の形状及び寸法になるように筒部材が保形形成されと
共に、製造された筒部材を二分割治具から容易に取り出
すことができ、極めて容易に且つ精度良く筒形防振ゴム
用窓あき筒部材を製造することができると共に溶接接合
部を短くできる。 第４の手段は、それぞれの板材が該板
材形成工程時に、２個一対の板材の少なくとも一方の板
材の横幅方向一端に両側を残して横幅方向に凹んだ切欠
き凹部が形成され、それぞれの該半筒体を、電極をもつ
対向する一対の治具で筒状に嵌着保持しつつ、該半筒体
のそれぞれの該突き合わせ部を突き合わせて抵抗溶接接
合する溶接接合工程時に該切欠き凹部を除いた該両側の
突き合わせ部を抵抗溶接接合することにより該筒部材に
窓を形成するようにしたので、抵抗溶接にて接合する
際、この二分割治具により筒状体が所望の筒部材の形状
及び寸法になるように筒部材が保形形成されと共に、製
造された筒部材を二分割治具から容易に取り出すことが
でき、極めて容易に且つ精度良く筒形防振ゴム用窓あき
筒部材を製造することができると共に溶接接合部を短く
できる。 [Action] As described above, the first means is bent in against the end comrades lateral direction the tubular body of the metal plate, a pair
And a part of each of the opposing planes
And a pair of opposed electrodes forming
When the outer circumference of a desired cylindrical member fits in each of the opposed planes ,
Using a cylindrical two-piece jig provided with a recess having a peripheral surface
And move one jig and the other jig relatively close to each other.
Between the pair of opposed planes of the two-piece jig.
Position, through the pair of electrodes facing each other, the cylindrical
Apply a welding current from one end of the body to the other end.
In this way, the ends are joined together by resistance welding, where the butted parts are joined together and butted together.
As a result , the tubular body is preliminarily approximately the same as the desired tubular member.
Since it can be bent into a shape, this cylindrical body is
It can be easily fitted and held in a fixed position, and the ends of the cylindrical body
Melt each other while butting the butted parts
When joining by resistance welding,
So that the cylindrical body has the desired shape and dimensions of the cylindrical member.
The member is shaped and formed, and the manufactured tubular member is divided into two parts.
It can be easily removed from the jig, very easily and
It is possible to manufacture a cylindrical member for cylindrical vibration-proof rubber with high accuracy.
You. Further, the invention according to claim 1 can control an increase in the temperature near the butt portion by adjusting the conduction current flowing at the time of welding, and can suppress the vicinity of the butt portion from hardening and becoming brittle . Formed by fitting and holding the split jig
The cylindrical vibration damping rubber for tube member, by energizing again while fitted held in divided jig easily be performed tempered by reheating the vicinity bonding, temper thus
Processing when drawing the cylindrical rubber vibration isolator for cylindrical member obtained I line Do reduced in diameter to substantially centripetal direction from its outer periphery, it is possible to suppress the deformation near the joint is recessed inwardly, cracking Can be suppressed, and restrictions on mechanical properties for selecting the material of the plate material can be relaxed. In the second means, as above, place
The width is half the finished circumference of the desired tubular member
In this way, two metal plates are punched in advance,
Each of the plate members is bent into the half-cylinder body, and a pair of
And a cylindrical member provided on each of the opposing planes.
A pair of opposing recesses having an inner peripheral surface with which the outer peripheral surface of the
Using a cylindrical two-piece jig consisting of a pair of electrodes with
Te, each of the semi-cylindrical body and cylindrical shape fitted coercive <br/> lifting the said pair of recesses, are relatively close to one jig and the other jig, the
Position both ends of a pair of half cylinders between the pair of opposing planes.
And then apply a welding current from one half-cylinder to the other half-cylinder
By, joined by resistance welding to dissolve each other while butting the butt portion abutted the ends comrades of the pair of semi-cylindrical body, so to produce a cylindrical anti-vibration rubber for tube member, bisected cylindrical body In advance, make it almost the same shape as the desired tubular member
It can be bent, and this two-part cylindrical body is
Can be easily fitted and held at the position of
While matching the butting parts that match the end comrades,
When joined by resistance welding that melts into
The shape and size of the desired cylindrical member is determined by dividing the cylindrical body into two parts by the jig.
The cylindrical member is shaped and manufactured to
Can be easily removed from the two-piece jig,
Extremely easy and accurate cylindrical member with window for rubber anti-vibration rubber
Can be manufactured. According to the second aspect of the present invention, similarly to the first aspect of the present invention, it is possible to suppress the vicinity of the butted portion from being hardened and weakened, and to once fit the split jig.
The cylindrical jig for holding the anti-vibration rubber formed by holding
The tempering process can be easily performed in the vicinity of the joint while the fitting is being held, and the cylindrical anti-vibration rubber manufactured or assembled using the cylindrical member obtained by performing the tempering process in this manner. In order to apply the pre-compression to the rubber elastic body, during the drawing process in which the diameter of the cylindrical member is reduced substantially in the centripetal direction from the outer periphery thereof, it is possible to suppress the deformation in which the vicinity of the joint is depressed inward, and the crack is generated. It is possible to suppress the occurrence, and to alleviate the restriction on the mechanical properties for selecting the material of the plate material. Third means
Means that the plate material is at least one in the width direction during the plate material forming step.
Notch recesses formed in the width direction leaving both sides at the ends
The cylindrical body is fitted and held with a pair of opposed jigs having electrodes.
While holding the butt portion of the cylindrical body by resistance welding.
Excluding the notched recesses while leaving the both sides during the welding process
By joining the butted portions on both sides by resistance welding
Since a window is formed in the cylindrical member, resistance welding is used.
At the time of joining, the cylindrical body is moved to a desired cylindrical portion by the two-piece jig.
When the cylindrical member is shaped and formed to the shape and size of the material
In both cases, the manufactured tubular member is easily taken out of the two-piece jig
Very easily and accurately
Can be manufactured with welded joints
The part can be shortened. The fourth means is that each plate material is
In the material forming step, at least one plate of the pair of two plate materials
Notch recessed in the width direction leaving both sides at one end in the width direction of the material
Recesses are formed, each half-cylinder having an electrode
The semi-cylindrical body is fitted and held in a tubular shape with a pair of opposed jigs.
Butt each butted part of
During the welding process, the cut-out recesses are removed on both sides.
The butted part is connected to the cylindrical member by resistance welding.
Since the window is formed, it is joined by resistance welding
At this time, the cylindrical body is shaped into a desired cylindrical member by the two-piece jig.
And the dimensions of the cylindrical member are kept
It is easy to take out the manufactured cylindrical member from the two-piece jig.
Able to open the window for rubber anti-vibration rubber very easily and accurately
Can produce cylindrical members and shorten welded joints
it can.

【０００８】[0008]

【発明の実施の形態】以下、図１〜図１５に基づいて、
筒形エンジンマウント等の円筒形防振ゴムに用いられる
筒部材の製法を説明する。 （実施例１） 図１に示すように、従来と同様にロール状に巻かれた鋼
板１を打抜きプレス機２に送り出し、実質的に仕上がり
周寸法に見合う横幅をもつ板材３を横幅方向に間隔をお
いて打ち抜く。なお、図示されていないが、板材３の横
幅方向両端に両側を残して横幅方向に凹んだ切欠き凹部
を施すことができる。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
A method of manufacturing a cylindrical member used for a cylindrical vibration isolating rubber such as a cylindrical engine mount will be described. (Example 1) As shown in FIG. 1, feeding the steel plate 1 wound in a conventional manner in a roll punching press machine 2, the width direction plate 3 having a width commensurate with substantially finished circumferential dimension Punch at intervals. Although not shown, the side of the plate 3 is not shown.
Notch recessed in the width direction leaving both sides at both ends in the width direction
Can be applied.

【０００９】次に、図２に示すように、打ち抜かれた板
材３を曲げプレス機（図示せず）で横幅方向両端３ａ，
３ｂを周方向に、突き合わせて直円筒状の筒状体３０ａ
を形成する。なお、板材３の横幅方向両端に切欠き凹部
を施すことにより、切欠き凹部に対応して、筒状体３０
ａに、一点鎖線で示すような、窓３２を形成することが
できる。 Next, as shown in FIG. 2, the punched sheet material 3 is bent by a bending press (not shown) at both ends 3a in the width direction.
3b in the circumferential direction, butted into a cylindrical body 30a having a right cylindrical shape.
To form Notches are formed at both ends in the width direction of the plate 3.
Is applied to the cylindrical body 30 corresponding to the notch recess.
a, forming a window 32 as shown by a dashed line.
it can.

【００１０】しかる後、図３に示すように、一対の対向
平面を有すると共にそれぞれの対向平面の一部を形成す
る対向する一対の電極１０１ａ，１０２ａを一体的に備
え、且つそれぞれの対向平面に筒状体３０ａを外周面に
嵌合する内周面１０１ｂ，１０２ｂを有する凹部を備え
た筒状の二分割治具１００を用い、筒状体３０ａの外周
面を凹部の内周面１０１ｂ，１０２ｂに筒状体３０ａの
両端部のみ対向平面から突出させて全体的に嵌着保持
し、筒状体３０ａの突き合わせ部３１が下半割り治具１
０１の右側上部に設けた抵抗溶接機の一方の電極１０１
ａに近接するように、そして、上半割り治具（他方の治
具）１０２の右側下部に設けた他方の電極１０２ａに近
接するように、下半割り治具（一方の治具）１０１の上
方から上半割り治具（他方の治具）１０２を下方に移行
させながら一方の治具１０１と他方の治具１０２を相対
的に接近させ、筒状体３０ａの端同志３ａ，３ｂを二分
割治具１００の対面する一方の治具（下半割り治具）１
０１の対向平面と他方の治具（上半割り治具）１０２の
対向平面間に位置せしめて、それぞれの対向平面を形成
する一対の電極１０１ａ，１０２ａを介して、筒状体の
一方の端の部分から他方の端の部分に溶接電流を流すこ
とにより、端同志を突き合わせた切欠き凹部を除いた該
両側の突き合わせ部を突き合わせつつ互いに溶け込ませ
る抵抗溶接にて接合して、ほぼ真円形に接合されたきれ
いな筒形防振ゴム用筒部材（以下、筒部材という）また
は筒形防振ゴム用窓あき筒部材（以下、窓あき筒部材と
いう）３０を製造することができる。[0010] Thereafter, as shown in FIG. 3, a pair of opposed
Have planes and form part of their respective opposing planes
Opposing electrodes 101a and 102a are integrally provided.
And a cylindrical body 30a on the outer peripheral surface
A recess having inner peripheral surfaces 101b and 102b to be fitted
The outer circumference of the cylindrical body 30a using the cylindrical two-piece jig 100
The surface of the cylindrical body 30a is formed on the inner peripheral surfaces 101b and 102b of the concave portions.
Only the both ends are protruded from the opposing plane and are fitted and held as a whole, and the butting portion 31 of the tubular body 30a is fixed to the lower half jig 1
One electrode 101 of the resistance welding machine provided on the upper right side of 01
a , and the upper half jig (the other jig)
Tool 102) near the other electrode 102a provided on the lower right side of the
Touch the lower half jig (one jig) 101
Move the upper half jig (the other jig) 102 downward from one side
While making one jig 101 and the other jig 102
And close the ends 3a and 3b of the cylindrical body 30a into two parts.
One jig facing the split jig 100 (lower half split jig) 1
01 and the other jig (upper half jig) 102
Form each opposing plane by positioning between opposing planes
Through a pair of electrodes 101a and 102a
By applying a welding current from one end portion to the other end portion, the cutout recesses where the ends were butted were removed.
A neat cylindrical anti-vibration rubber cylinder member (hereinafter, referred to as a cylinder member) joined by resistance welding in which the butted portions on both sides are melted into each other while being butted together, and joined in a substantially perfect circle.
Is a cylindrical member with a window for rubber anti-vibration rubber.
30 ) can be manufactured .

【００１１】しかる後、金型のキャビテイにこの接合さ
れた筒部材３０をセットすると共に、この窓あき筒部材
３０の内側に内筒金具３５を配置し、筒部材３０と内筒
金具３５との空間にゴム材料を射出した後加硫して、図
４に示すように、筒部材３０と内筒金具３５間にゴム弾
性体３６が接着介在したゴムブッシュ３００を製造し
た。Thereafter, the joined cylindrical member 30 is set in the cavity of the mold, and the inner cylindrical member 35 is disposed inside the windowed cylindrical member 30, so that the cylindrical member 30 and the inner cylindrical member 35 are connected to each other. A rubber material was injected into the space and then vulcanized to produce a rubber bush 300 in which a rubber elastic body 36 was bonded and interposed between the cylindrical member 30 and the inner cylindrical fitting 35 as shown in FIG.

【００１２】そして、図５に示すような、他の金属製の
円筒部材３０１と、この他の円筒部材３０１の外周面に
抵抗溶接した取り付けアーム部３０２とからなるブラケ
ット３１０の内周面に、ゴムブッシュ３００の円筒部材
３０１の外周から求心方向に筒部材３０を塑性変形する
絞り加工を施し、図６に示すように、絞り加工したゴム
ブッシュ３００を圧入してブラケット付円筒形防振ゴム
３３０を組み立てた。As shown in FIG. 5, an inner peripheral surface of a bracket 310 comprising another metallic cylindrical member 301 and a mounting arm portion 302 which is resistance-welded to the outer peripheral surface of the other cylindrical member 301 is provided. A drawing process for plastically deforming the cylindrical member 30 in the centripetal direction from the outer periphery of the cylindrical member 301 of the rubber bush 300 is performed, and as shown in FIG. Was assembled.

【００１３】また、ブラケット３１０の円筒部材３０１
は、防振ブッシュ３００の筒部材３０と同様の方法で製
造したものであり、抵抗溶接した接合部３０３を備えて
いる。The cylindrical member 301 of the bracket 310
Is manufactured by the same method as the cylindrical member 30 of the vibration isolating bush 300, and has a joint portion 303 which is resistance-welded.

【００１４】（実施例２） 図７〜図１３は、さらに他の実施例を説明するものであ
り、図１０、図１１に示す２個の半円筒（半筒体）４０
ａから、図１５に示す筒形防振ゴム４４０に用いられる
窓あき筒部材４０（図１３参照）の製造方法であって、
先ず、打抜きプレス機（図示せず）により、実施例１と
同様にコイル状に巻かれた鋼板から、図７に示す横幅方
向両端に両側を残して横幅方向に凹んだ切欠き凹部４
ａ，４ａを設けた板材４を打抜く。(Embodiment 2) FIGS. 7 to 13 illustrate still another embodiment . Two half cylinders (half cylinder bodies) 40 shown in FIGS. 10 and 11 are shown.
From a, it is used for the cylindrical anti-vibration rubber 440 shown in FIG.
A method of manufacturing a windowed cylinder member 40 (see FIG. 13),
First, punching pressing machine (not shown), the steel sheet similarly coiled Example 1, the width direction shown in FIG. 7
Notch recess 4 that is recessed in the width direction, leaving both sides at both ends
The plate material 4 provided with a and 4a is punched.

【００１５】次に、図８、図９に示すように、曲げプレ
ス機３００の下型３０１上に板材４をセットし、下型３
０１に対して上型３０２を押圧することにより、板材４
を図１０、図１１に示すような、窓あき筒部材４０の仕
上がり周寸法に見合う横幅をもつ半円筒（半筒体）４０
ａに少なくとも２個曲げ加工する。Next, as shown in FIGS. 8 and 9, the plate member 4 is set on the lower die 301 of the bending press 300, and
01 by pressing the upper mold 302 against the plate material 4.
Of the windowed cylinder member 40 as shown in FIGS.
Semi-cylindrical ( half-cylindrical body ) 40 with a width that matches the rising circumferential dimension
a is bent at least two times.

【００１６】次に、図１２に示すように、一対の半筒体
４０ａ、４０ａをそれぞれの外周面に嵌合する半円弧状
内周面１０１ａ，１０２ａを有する凹部を備えた相対的
に互いに接近及び離間可能な筒状の二分割治具１０１，
１０２，を用いて、半円筒同 志４０ａの周方向両端を、
切欠き凹部４ａ，４ａを除いて突き合わせ、分割筒状体
４０ａ，４０ａの両端同志がそれぞれ一方の治具２０１
と他方の治具２０２の合せ面間に位置するように、且
つ、一方の治具２０１と他方の治具２０２のそれぞれの
凹部１０１ａ，１０２ａの半円弧状内周面に嵌着させて
それぞれを保持する。 なお、これ等一方の治具２０１と
他方の治具２０２は抵抗溶接機の一対の割り電極として
形成されている。従って、他方の電極（治具）２０２を
下方に移行しつつ一方の電極（治具）２０１から他方の
電極（治具）２０２に溶接電流を流すことにより、突き
合わせた突き合わせ部４１、４１を互いに溶け込ませる
抵抗溶接で接合でき、図１３に示すような、窓４２を有
するほぼ真円形の直円筒形にきれいに接合された窓あき
円筒部材４０を製造できた。Next, as shown in FIG. 12, a pair of semi-cylindrical bodies 40a, 40a are fitted in respective semicircular arcs to the outer peripheral surfaces thereof.
Relative with a recess having inner peripheral surfaces 101a, 102a
Cylindrical jig 101 that can approach and separate from each other
102, with the circumferential ends of the semi-cylindrical same Zhi 40a,
Butted except for the notched concave portions 4a, 4a,
Both ends of 40a, 40a are each one jig 201
And between the mating surfaces of the other jig 202 and
Each of the one jig 201 and the other jig 202
Each of the concave portions 101a and 102a is held by being fitted to a semicircular inner peripheral surface . In addition, these one jig 201 and
The other jig 202 is used as a pair of split electrodes of a resistance welding machine.
Is formed. Therefore, by moving a welding current from one electrode (jig) 201 to the other electrode (jig) 202 while moving the other electrode (jig) 202 downward, the butted butted portions 41, 41 are brought together. As shown in FIG. 13, a windowed cylindrical member 40 which can be joined by resistance welding so as to be melted and which is joined in a substantially right circular cylindrical shape having a window 42 can be manufactured.

【００１７】そして、この窓あき円筒部材４０をゴム射
出成形金型（図示せず）のキャビテイにセットすると共
に、窓あき円筒部材４０の内側に内筒金具４５をセット
して、これらの空間にゴム材料を射出した後加硫するこ
とにより、第１の凹部４６ａと第２の凹部４６ｂとを有
するゴム弾性体４６で窓あき円筒部材４０と内筒金具４
５とを一体的に固着したゴムブッシュ４００を製造し
た。The windowed cylindrical member 40 is set in a cavity of a rubber injection molding die (not shown), and an inner tube fitting 45 is set inside the windowed cylindrical member 40, and the space is set in these spaces. After the rubber material is injected and vulcanized, the window elastic cylindrical member 40 and the inner cylindrical fitting 4 are formed by the rubber elastic body 46 having the first concave portion 46a and the second concave portion 46b.
5 was integrally fixed to the rubber bush 400.

【００１８】しかる後、図１５に示すように、第１の凹
部４６ａと第２の凹部４６ｂに液４８、４９を充填し、
ゴムブッシュ４００の円筒形の外筒金具４７の内周面に
圧入した。そして、外筒金具４７の外周から求心方向に
絞り加工することにより、外筒金具４７および窓あき円
窓あき筒部材４０を縮径状態に塑性変形させ、ゴム弾性
体４６に予備圧縮を付与した液入り円筒形防振ゴム４４
０を製造した。Thereafter, as shown in FIG. 15, the first concave portion 46a and the second concave portion 46b are filled with liquids 48 and 49, respectively.
The rubber bush 400 was pressed into the inner peripheral surface of the cylindrical outer tube fitting 47. Then, by drawing in the centripetal direction from the outer periphery of the outer cylinder fitting 47, the outer cylinder fitting 47 and the windowed cylinder member 40 are plastically deformed in a reduced diameter state, and the rubber elastic body 46 is pre-compressed. Liquid-filled cylindrical vibration-proof rubber 44
0 was produced.

【００１９】上記実施例の窓あき筒部材３０、４０に用
いた鋼板はいずれも厚さ１．６mmの鋼板（ＳＳ３３０）
で延びが２６％であったが、ゴム弾性体３５、４５に予
備圧縮を付与するために、窓あき筒部材３０、４０をい
ずれも外径比５〜１０％の絞り加工を行なっても、抵抗
溶接した接合部近辺に亀裂および凹みが生じなかった。The steel plates used for the windowed tubular members 30 and 40 of the above embodiment are both 1.6 mm thick steel plates (SS330).
Although the elongation was 26%, in order to give preliminary compression to the rubber elastic bodies 35 and 45, even if the windowed cylinder members 30 and 40 were both drawn with an outer diameter ratio of 5 to 10%, No cracks and dents were formed near the resistance welded joint.

【００２０】また、かかる製法はいずれも溶接し易いよ
うに、電極を備えた治具１００、２００で筒が嵌着保持
されているので抵抗溶接で接合した後、嵌着保持した状
態でそのまま容易にテンパー処理することができ、接合
部近辺を軟化できる。Further, according process as is easily welded any, after the cylinder in the jig 100 and 200 having the electrodes were joined by resistance welding so is fitted retained, as it easily while fitted held Tempering treatment can be performed, and the vicinity of the joint can be softened.

【００２１】また、第２実施例では横幅方向に凹んだ切
欠き凹部４ａを除いた両側を溶接すると、接合部を短く
できるので、その分温度上昇が少ないので、接合時間を
短縮できる利点を有している。Further, in the second embodiment , if welding is performed on both sides except for the cutout recess 4a which is recessed in the lateral width direction , the joining portion can be shortened. Therefore, there is an advantage that the temperature rise is small and the joining time can be shortened. doing.

【００２２】また、かかる抵抗溶接で接合すると、長さ
方向の両端をきれいに接合できる利点を有している。Further, when joining by such resistance welding, there is an advantage that both ends in the length direction can be joined cleanly.

【００２３】なお、実施例では窓あき筒部材は円形に構
成されているが、長方形、楕円形、多角形等にも構成可
能であり、且つ本発明は、上記した各実施例を適宜組み
合わせて実施できることは勿論のこと、本発明の主旨を
逸脱しない範囲において他の形態で実施できる。[0023] While in the embodiment MadoAki tubular member has a circular, rectangular, oval, is also configurable polygonal, and the present invention is appropriately set to each of the embodiments described above
Needless to say, the present invention can be implemented in other forms without departing from the gist of the present invention.

【００２４】[0024]

【発明の効果】本発明によれば、筒形防振ゴムに用いら
れる筒部材または窓あき筒部材の製法において、溶接時
に溶接接合近辺に生じる温度上昇を抑制でき、溶接接合
近辺が硬化するのを抑制でき、かかる筒形防振ゴムの弾
性体に予備圧縮を付与するために、実質的にかかる筒部
材を絞り加工しても、溶接接合近辺に生じる亀裂を防止
できると共に、ほとんど内側に凹む変形を生じ難く、し
かも窓あき筒部材に用いられる材料の機械特性としての
伸び等も制限を受け難くなる。According to the present invention, in a method of manufacturing a tubular member or a windowed tubular member used for a tubular vibration-isolating rubber, it is possible to suppress a rise in temperature near the weld joint during welding and to harden the vicinity of the weld joint. In order to apply a pre-compression to the elastic body of the cylindrical vibration isolating rubber, even if the cylindrical member is substantially drawn, cracks generated near the weld joint can be prevented and almost inwardly depressed. Deformation is less likely to occur, and the material used for the windowed cylinder member is less likely to be restricted in elongation as a mechanical property.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例１の板材の加工方法を説明する
概略図である。FIG. 1 is a schematic diagram illustrating a method for processing a plate material according to a first embodiment of the present invention.

【図２】図１にて示された板材から筒に加工する説明図
である。FIG. 2 is an explanatory diagram for processing a plate material shown in FIG. 1 into a cylinder.

【図３】図２に示された筒を一対の治具に嵌着保持して
接合部を抵抗溶接して筒部材を製造するための説明図で
ある。FIG. 3 is an explanatory view for manufacturing a cylinder member by fitting and holding the cylinder shown in FIG. 2 to a pair of jigs and resistance-welding a joint portion.

【図４】図３で得られた筒部材を用いて製造した防振ブ
ッシュの正面図である。FIG. 4 is a front view of an anti-vibration bush manufactured using the tubular member obtained in FIG.

【図５】ブラケットの正面図である。FIG. 5 is a front view of the bracket.

【図６】図５のブラケットに図４の防振ブッシュを絞り
加工した後圧入したブラケット付筒形防振ゴムの正面図
である。FIG. 6 is a front view of a bracket-type cylindrical vibration-isolating rubber which is press-fitted after drawing the vibration-isolating bush of FIG. 4 into the bracket of FIG. 5;

【図７】実施例２の板材の平面図である。FIG. 7 is a plan view of a plate member according to a second embodiment.

【図８】実施例２に用いられる曲げプレス機の要部を断
面で示す破砕断面図である。FIG. 8 is a crushed cross-sectional view showing a cross section of a main part of a bending press used in Example 2.

【図９】実施例２に用いられる曲げプレス機の要部を断
面で示す破砕断面図である。FIG. 9 is a crushed cross-sectional view showing a cross section of a main part of a bending press used in Example 2.

【図１０】図７中の板材を図８、図９の曲げプレス機を
用いて曲げ加工して形成された半筒の中央の縦断面図で
ある。FIG. 10 is a vertical sectional view of the center of a half cylinder formed by bending the plate material in FIG. 7 using the bending press shown in FIGS. 8 and 9;

【図１１】図１０の平面図である。FIG. 11 is a plan view of FIG. 10;

【図１２】図１０および図１１の半筒を２個突き合わせ
て一対の半割り治具に嵌着保持し、半筒の突き合わせ部
を抵抗溶接する状態を示す正面図である。FIG. 12 is a front view showing a state in which two half cylinders of FIGS. 10 and 11 are butted together and fitted and held on a pair of half split jigs, and the butted portions of the half cylinders are resistance welded.

【図１３】図１２中の半筒同志を突き合わせて突き合わ
せ部を抵抗溶接して得られ窓あき筒部材の斜視図であ
る。FIG. 13 is a perspective view of a windowed cylinder member obtained by abutting half cylinders in FIG. 12 and welding the butted portions by resistance welding.

【図１４】図１３の窓あき筒部材を用いて製造した防振
ブッシュの縦断面図である。FIG. 14 is a longitudinal sectional view of an anti-vibration bush manufactured using the windowed cylinder member of FIG.

【図１５】図１４の防振ブッシュを外筒に圧入して製造
した液入り筒形防振ゴムの縦断面図である。15 is a longitudinal sectional view of a liquid-filled cylindrical vibration-isolating rubber manufactured by press-fitting the vibration-isolating bush of FIG. 14 into an outer cylinder.

【符号の説明】[Explanation of symbols]

３，４：板材 ３０，４０：円筒部材（筒部材または窓あき筒部材） ３１，４１：突き合わせ部 １００，２００：一対の割り治具（２分割治具） １０１，２０１：下半割り治具 １０２：２０２上半割り治具 3, 4: plate material 30, 40: cylindrical member(Cylinder or windowed cylinder)  31, 41: Butting portion 100, 200: A pair of split jigs (two split jigs) 101, 201: Lower half jig 102: 202 Upper half jig

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.⁶，ＤＢ名) B23K 11/02 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23K 11/02

Claims (4)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 筒形防振ゴムに用いられる筒部材の製法
であって、 前記筒部材の仕上がり周寸法に見合う横幅をもつ金属製
の板材の横幅方向の端同志を突き合わせて筒状体に曲げ
加工し、一対の対向平面を有すると共にそれぞれの該対
向平面の一部を形成する対向する一対の電極を一体的に
備え、且つそれぞれの該対向平面に前記筒部材の外周が
嵌合する内周面を有する凹部を備えている筒状の二分割
治具を用いて、該筒状体を該凹部にその両端部のみを突
出させて全体的に嵌着保持し、一方の治具と他方の治具
を相対的に接近させ、該筒状体の該端同志を該二分割治
具の該一対の対向平面間に位置せしめて、該対向する一
対の電極を通じて、該筒状体の一方の端の部分から他方
の端の部分に溶接電流を流すことにより、該端同志を突
き合わせた突き合わせ部を突き合わせつつ互いに溶け込
ませる抵抗溶接にて接合することを特徴とする筒形防振
ゴム用筒部材の製法。(1)Manufacturing method of cylindrical member used for cylindrical rubber vibration insulator
And  Finish of the tubular memberWeekMatch the dimensionssideMade of metal with width
Butted ends of the plate material in the width direction into a cylindrical bodybending
Processed,A pair of opposing planes and each pair
The pair of opposing electrodes forming a part of the facing plane are integrated
And the outer periphery of the tubular member is provided on each of the opposed planes.
Cylindrical halves with recesses with mating inner peripheral surfaces
Using a jig, project the cylindrical body into the recess only at both ends.
Let out and fit in overallHold andOne jig and the other jig
Are relatively close to each other, and the ends of the cylindrical body are
The tool is positioned between the pair of opposing planes of the
Through a pair of electrodes, from one end of the tubular body to the other
By applying a welding current to the end of theSudden
Melt into each other while butting the butted parts
Masu resistance weldingAtCylindrical vibration isolation characterized by joining
Manufacturing method of rubber tubular member. 【請求項２】 予め一対の半筒体を形成した後、該一対
の半筒体から筒形防振ゴムに用いられる筒部材の製法で
あって、 前記筒部材の仕上がり周寸法の半分に見合う横幅になる
ように、予め金属製の板材を２個打抜き加工し、該それ
ぞれの板材をそれぞれ前記半筒体に曲げ加工し、一対の
対向平面を備えると共にそれぞれの対向平面に前記筒部
材の外周面が嵌合する内周面を有する対向する一対の凹
部を備えた一対の電極からなる筒状の二分割治具を用い
て、該半筒体のそれぞれを該一対の凹部に筒状にそれら
の両端部のみを突出させて全体的に嵌着保持し、一方の
治具と他方の治具を相対的に接近させ、該一対の半筒体
の両端同志を該一対の対向平面間に位置せしめて、一方
半筒体から他方の半筒体に溶接電流を流すことにより、
該一対の半筒体の両端同志を突き合わせた突き合わせ部
を突き合わせつつ互いに溶け込ませる抵抗溶接で接合す
ることを特徴とする筒形防振ゴム用筒部材の製法。(2)After forming a pair of half cylinders in advance,
The method of manufacturing the tubular member used for the rubber damper
So,  Finish of the tubular memberWeekOf dimensionsHalfSuitable forsideBecome wide
like,Two pieces of metal plate material are punched in advance.
Each plate materialEachBending on the half cylinderProcessed,Pair of
An opposite plane, and the cylindrical section
A pair of opposing recesses having an inner peripheral surface into which the outer peripheral surface of the material fits
Using a cylindrical two-piece jig consisting of a pair of electrodes with
Then, each of the half-cylinders is cylindrically inserted into the pair of recesses.
The entire end is fitted by protruding only both ends ofHold andOne
The jig and the other jig are relatively approached, and the pair of half cylinders
Are positioned between the pair of opposing planes.
By passing a welding current from one half cylinder to the other half cylinder,
The two ends of the pair of half cylinders areButted butted part
Are joined by resistance welding that melts into each other while
A method for producing a tubular member for a tubular anti-vibration rubber, comprising: 【請求項３】 筒形防振ゴム用いられる窓あき筒部材の
製法であって、 前記窓あき筒部材の仕上がり周寸法に見合う横幅をもつ
金属製の板材を形成す る板材形成工程と、該板材を曲げ加工して、該板材の横幅方向両端同志が突
き合わされる突き合わせ部を有する筒状体に形成する筒
状体形成工程と 、該筒状体を、電極をもつ対向する一対の治具で嵌着保持
しつつ、該筒状体の該突き合わせ部を抵抗溶接接合する
溶接接合工程と、 を備えている筒形防振ゴム用筒部材の製法において、 該板材が該板材形成工程時に、少なくとも横幅方向一端
に両側を残して横幅方向に凹んだ切欠き凹部が形成さ
れ、該溶接接合工程時に該両側を残して該切欠き凹部を
除いた該両側の突き合わせ部を抵抗溶接接合することに
より該筒部材に窓を形成することを特徴とする 筒形防振
ゴム用窓あき筒部材の製法。3. A cylindrical anti-vibration rubber is used.Window openingOf cylindrical member
Manufacturing method, whereinWindow openingHas a width that matches the finished circumference of the cylindrical member
MetalForm plate Plate forming process,The plate is bent, and both ends in the width direction of the plate protrude.
A cylinder formed in a cylindrical body having a butted portion to be joined
Shape forming process and ,The cylindrical body is fitted and held by a pair of opposed jigs having electrodes.
While joining the butt portion of the tubular body by resistance welding
Welding joining process,  ToIn the method of manufacturing a tubular member for a tubular anti-vibration rubber provided, The plate material is at least one end in the width direction at the time of the plate material forming step.
Notch recesses formed in the width direction leaving both sides
The notch recess is formed by leaving both sides during the welding joining process.
The butted portions on both sides removed are joined by resistance welding
Characterized in that a window is formed in the cylindrical member. Cylindrical anti-vibration
For rubberWindow openingManufacturing method of cylindrical member. 【請求項４】 予め一対の半筒体を形成した後、該一対
の半筒体から筒形防振ゴムに用いられる窓あき筒部材の
製法であって、 前記窓あき筒部材の仕上がり周寸法の
半分に見合う横幅をもつ金属製の２個一対の板材を形成
する板材形成工程と、該２個一対の板材をそれぞれ曲げ加工し、該それぞれの
板材の横幅方向両端同志が突き合わされる突き合わせ部
を有する前記半筒体を形成する半筒体形成工程と 、それぞれの該半筒体を、電極をもつ対向する一対の治具
で筒状に嵌着保持しつつ、該半筒体のそれぞれの該突き
合わせ部を突き合わせて抵抗溶接接合する溶接接合工程
と、 を備えている筒形防振ゴム用筒部材の製法において、 該それぞれの板材が該板材形成工程時に、該２個一対の
板材の少なくとも一方の板材の横幅方向一端に両側を残
して横幅方向に凹んだ切欠き凹部が形成され、該溶接接
合工程時に該切欠き凹部を除いた該両側の突き合わせ部
を抵抗溶接接合することにより該筒部材に窓を形成する
ことを特徴とする 筒形防振ゴム用窓あき筒部材の製法。(4)After forming a pair of half cylinders in advance,
Of windowed cylinder members used for semi-cylindrical
Manufacturing method, Finished peripheral dimensions of the windowed cylinder memberof
HalfSuitable forForm a pair of two metal plates with width
Plate forming process,Each of the two pair of plate members is bent, and the respective
Butt where both ends in the width direction of the plate are butted
A half-cylinder forming step of forming the half-cylinder having ,A pair of jigs each having an electrode
While holding in a cylindrical shape with
Welding joining process in which the joints are joined by resistance welding
When,  ToIn the method of manufacturing a tubular member for a tubular anti-vibration rubber provided, At the time of the plate material forming step, each of the two plate materials is
Leave both sides at one end in the width direction of at least one of the plate materials
As a result, a notch recessed in the width direction is formed.
Butting portions on both sides excluding the notched concave portion during the joining process
Forming a window in the cylindrical member by resistance welding
Characterized by For cylindrical anti-vibration rubberWindow openingManufacturing method of cylindrical member.