JP2849563B2 - Metal tube - Google Patents
Metal tubeInfo
- Publication number
- JP2849563B2 JP2849563B2 JP7080774A JP8077495A JP2849563B2 JP 2849563 B2 JP2849563 B2 JP 2849563B2 JP 7080774 A JP7080774 A JP 7080774A JP 8077495 A JP8077495 A JP 8077495A JP 2849563 B2 JP2849563 B2 JP 2849563B2
- Authority
- JP
- Japan
- Prior art keywords
- chamfered
- plate
- inclined surface
- surface portion
- welded
- 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.)
- Expired - Lifetime
Links
Landscapes
- Laser Beam Processing (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車の防振ゴムを装
着する管体等、各種の金属管体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various kinds of metal pipes, such as a pipe for mounting an anti-vibration rubber of an automobile.
【０００２】[0002]
【従来の技術】従来の金属管体は、高価な押し出し加工
に替え、所定の長さに切断した金属板を筒状に曲げ加工
し、両端面を接合して抵抗溶接、或いはアーク溶接した
後、開口端面に面取りを施して安価な管体としていたの
である。しかしながら、溶接により溶融金属（ナゲッ
ト）が突設してバリを生じるためバリ取りの仕上げ加工
を必要として手間がかかると共に、筒状に成形後に面取
りを施すことから面倒な作業となっていたのである。2. Description of the Related Art Conventional metal pipes are replaced with expensive extrusion processing, and after bending a metal plate cut to a predetermined length into a cylindrical shape, joining both end surfaces thereof and performing resistance welding or arc welding. The end face of the opening was chamfered to make an inexpensive tube. However, since the molten metal (nugget) protrudes due to welding to generate burrs, finishing work for deburring is required, which is troublesome, and chamfering after forming into a cylindrical shape is a troublesome operation. .
【０００３】[0003]
【発明が解決しようとする課題】そこで本発明は、手間
のかかるバリ取りを不要とし、また予め面取りを板状体
に施すことができて製造が容易で安価となる金属管体を
提供するものである。SUMMARY OF THE INVENTION Accordingly, the present invention is to provide a metal tube which can be manufactured easily and inexpensively by eliminating the need for time-consuming deburring, and capable of performing chamfering on a plate in advance. It is.
【０００４】[0004]
【課題を解決するための手段】このため本発明は、板状
体を曲げ加工して両端面部を溶接すると共に、開口面に
面取りを施したものにおいて、長い板状体の長手方向の
端縁を面取りした後、プレス剪断してその両剪断端面に
鉛直面部と内側への傾斜面部を連設した板体を形成し、
面取り部を外側にして該両剪断端面を鉛直面部で接合さ
せて対向する傾斜面部で形成される凹溝を両端間に外向
きに開口した筒状に曲げ加工し、該接合部にレーザー溶
接を施して溶融金属を両端間の凹溝内に留めた構成の金
属管体である。SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a long plate-shaped body in which a plate-shaped body is bent and welded at both end portions and an opening surface is chamfered. After chamfering, press shearing is performed to form a plate body in which a vertical surface portion and an inward inclined surface portion are continuously provided on both sheared end surfaces,
With the chamfered part outside, the two sheared end faces are joined by a vertical face part, and a concave groove formed by the facing inclined surface part is bent into a cylindrical shape having an outward opening between both ends, and laser welding is performed on the joint part. This is a metal tube having a configuration in which the molten metal is retained in a concave groove between both ends.
【０００５】[0005]
【作用】長い板状体をプレス剪断することにより、通常
その剪断端面が鉛直面部に内側への傾斜面部を連設した
対向形状となるのであり、ついで面取り部を外側に位置
させ筒状に曲げ加工して該両剪断端面を鉛直面部で接合
させることにより対向する傾斜面部で凹溝が外向きに開
口形成されるのである。そして該接合部にレーザー溶接
を施すことで、接合部の溶融金属が凹溝内に留まった状
態で溶着固化するためバリとなって突出することがな
い。このため手間のかかるバリ取りが不要となるのであ
る。またレーザー溶接のため溶け落ちがなく滑らかな溶
接面となるのである。When a long plate is pressed and sheared, the sheared end face usually has an opposed shape in which an inwardly inclined surface is connected to a vertical surface, and then the chamfered portion is positioned outside and bent into a cylindrical shape. By processing and joining the two sheared end surfaces at the vertical surface portion, a concave groove is formed to open outward at the opposed inclined surface portion. By performing laser welding on the joint, the molten metal in the joint is welded and solidified while remaining in the groove, so that it does not project as a burr. Therefore, troublesome deburring becomes unnecessary. Also, because of laser welding, there is no burn-through and a smooth weld surface.
【０００６】また、面取り部でも傾斜面部で凹溝が外向
きに開口されて溶融金属が凹溝内に留まった状態で溶着
されるためバリが突出しないことから、長い板状体の段
階で長手方向の端縁を面取りできることになる。したが
って、冷間加工によって長い板状体の成形時に面取り形
状にできるのであり、極めて容易に面取りができるので
ある。Further, even in the chamfered portion, the concave groove is opened outward at the inclined surface portion and the molten metal is welded in a state of staying in the concave groove so that burrs do not protrude. The edge in the direction can be chamfered. Therefore, it is possible to form a chamfer at the time of forming a long plate-like body by cold working, and it is possible to chamfer extremely easily.
【０００７】[0007]
【実施例】以下、本発明の詳細を図示実施例で説明す
る。図１の管体は、ＪＩＳ規格ＳＨＰ−１鋼製の円筒状
であり、まず、コイル状に巻かれた長い板状体を引き出
して冷間加工することにより、図２のように、その長手
方向の両端縁を面取り２しながら所定の巾の板状体１０
と成す。BRIEF DESCRIPTION OF THE DRAWINGS FIG. The tubular body shown in FIG. 1 is a cylindrical body made of JIS standard SHP-1 steel. First, a long plate-like body wound in a coil shape is drawn out and cold-worked, so that its longitudinal shape is made as shown in FIG. Plate 10 of a predetermined width while chamfering both edges in
And
【０００８】ついで、板状体１０を所定の長さにプレス
剪断するのである。これにより、図３のように、通常そ
の剪断端面が鉛直面部１１に内側への傾斜面部１２を連
設した対向形状の板体１となるのである。即ち、下端で
は完全な切断状態ではなく圧力破壊となることから金属
組織が崩れて傾斜面部１２となるのである。なお、面取
り２部では傾斜面部１２の巾が面取り分だけ短くなるの
である。Next, the plate 10 is press-sheared to a predetermined length. As a result, as shown in FIG. 3, the sheared end surface usually becomes the opposed-shaped plate 1 in which the inwardly inclined surface 12 is connected to the vertical surface 11. That is, since the lower end is not completely cut but is pressure-ruptured, the metal structure collapses to form the inclined surface portion 12. In the two chamfered portions, the width of the inclined surface portion 12 is reduced by the length of the chamfered portion.
【０００９】そして面取り２側を外側に位置させて板体
１を筒状に曲げ加工して該両剪断端面を鉛直面部１１，
１１で相互に接合させる。これにより、図４のように、
対向する傾斜面部１２，１２を内周面とする凹溝１３が
面取り２部位を含む全巾で外向きに開口形成されるので
ある。なお、本例の板体１０の厚みは約１．６mmであ
り、鉛直面部１１の高さは約０．９mmである。また傾斜
面部１２，１２による内周面の開角度は９０度であり、
凹溝１３の開口巾は約０．８mmである。Then, the plate 1 is bent into a cylindrical shape with the chamfering 2 side positioned outside, and the two sheared end faces are joined to the vertical faces 11, 11.
At 11 join them together. Thereby, as shown in FIG.
The concave groove 13 having the opposing inclined surface portions 12 and 12 as the inner peripheral surface is formed so as to open outward with the entire width including the two chamfered portions. In addition, the thickness of the plate body 10 of this example is about 1.6 mm, and the height of the vertical surface portion 11 is about 0.9 mm. Further, the opening angle of the inner peripheral surface by the inclined surface portions 12 and 12 is 90 degrees,
The opening width of the concave groove 13 is about 0.8 mm.
【００１０】ついで該凹溝１３にレーザーを照射して溶
接を施すことで、接合部の溶融金属が相互溶着して管体
に一体構造と成るのである。この際、図５のように、溶
融金属は両端間の凹溝１３域内に留まった状態で固化す
るためバリとなって突出することがないのである。この
状態は両端部の面取り２部においても同じであり、図６
のように、溶融金属が面取り２部での凹溝１３内に留ま
った状態で溶着されるため面取り２部でもバリが突出せ
ず滑らかな表面となるのである。Then, by irradiating the concave groove 13 with a laser and performing welding, the molten metal at the joint portion is mutually welded to form an integral structure with the tube. At this time, as shown in FIG. 5, the molten metal is solidified while remaining in the concave groove 13 between both ends, so that it does not become a burr and project. This state is the same for the two chamfers at both ends, and FIG.
As described above, since the molten metal is welded while remaining in the concave groove 13 at the chamfered portion 2, the burr does not protrude even at the chamfered portion 2 and a smooth surface is obtained.
【００１１】このように本例によると、溶融金属が凹溝
内に留まった状態で溶着固化するためバリとなって突出
することがないため、手間のかかるバリ取りの仕上げ作
業が不要となるのである。また、面取り部でも同様にバ
リが突出しないことから、予め長い板状体１０の段階で
長手方向の端縁を面取りできることになる。したがっ
て、冷間加工によって長い板状体１０の成形時に面取り
形状にできるのであり、極めて容易に面取りができるの
である。As described above, according to this embodiment, the molten metal is welded and solidified while remaining in the concave groove, so that it does not become a burr and does not protrude. is there. In addition, since the burrs do not similarly protrude from the chamfered portion, the longitudinal edge can be chamfered at the stage of the long plate-like body 10 in advance. Therefore, the long plate-like body 10 can be formed into a chamfered shape at the time of molding by cold working, and the chamfering can be performed very easily.
【００１２】本例は前記のように構成したが、本発明に
おいてはこれに限定されない。例えば、管体形状は問わ
ず、円筒の他、角筒形等でもよい。また管体素材も金属
であれば限定されず、その厚みも適宜である。さらに、
プレス剪断で得られる鉛直面部と傾斜面部の高さも任意
であり、したがって対向する傾斜面部で形成される凹溝
の開口巾も任意である。Although the present embodiment is configured as described above, the present invention is not limited to this. For example, the shape of the tube is not limited, and may be a square tube or the like in addition to a cylinder. Also, the tube material is not limited as long as it is metal, and its thickness is also appropriate. further,
The height of the vertical surface portion and the inclined surface portion obtained by press shearing is also arbitrary, and accordingly, the opening width of the groove formed by the opposed inclined surface portions is also arbitrary.
【００１３】[0013]
【発明の効果】本発明によると、接合部でのレーザー溶
接による溶融金属が凹溝内に留まった状態で溶着固化す
るためそれがバリとなって突出することがなく、手間の
かかるバリ取り仕上げが不要となる効果が大きく、面取
り部でもバリが突出しないことから、予め長い板状体の
段階で長手方向の端縁を面取り形成できるため容易な面
取り作業となる利点も有り、さらにレーザー溶接のため
溶け落ちがなく滑らかな溶接面となり、安価且つ迅速に
量産できるのである。According to the present invention, the molten metal formed by laser welding at the joint is welded and solidified while remaining in the groove, so that it does not become a burr and does not protrude. There is also an advantage that it becomes unnecessary, and since the burrs do not protrude even at the chamfered portion, the edge in the longitudinal direction can be chamfered at the stage of the long plate-like body in advance, so that there is an advantage that it becomes an easy chamfering work, and furthermore, there is an advantage of laser welding. As a result, there is no burn-through and a smooth welded surface, and mass production can be performed quickly and inexpensively.
【図１】本発明の一実施例の斜視図である。FIG. 1 is a perspective view of one embodiment of the present invention.
【図２】その長い板状体に面取りした状態の斜視図であ
る。FIG. 2 is a perspective view showing a state in which the long plate-like body is chamfered.
【図３】板状体のプレス剪断を示す要部の拡大縦断面図
である。FIG. 3 is an enlarged vertical sectional view of a main part showing press shearing of a plate-like body.
【図４】板体を曲げ加工した両端部の接合状態の拡大縦
断面図である。FIG. 4 is an enlarged vertical sectional view of a joined state of both ends obtained by bending a plate body.
【図５】そのレーザー溶接部の拡大縦断面図である。FIG. 5 is an enlarged vertical sectional view of the laser weld.
【図６】面取り部の要部拡大斜視図である。FIG. 6 is an enlarged perspective view of a main part of a chamfer.
１ 板体 １０ 板状体 １１ 鉛直面部 １２ 傾斜面部 １３ 凹溝 ２ 面取り REFERENCE SIGNS LIST 1 plate body 10 plate-like body 11 vertical surface part 12 inclined surface part 13 concave groove 2 chamfer
Claims (1)
ると共に、開口面に面取りを施したものにおいて、長い
板状体の長手方向の端縁を面取りした後、プレス剪断し
てその両剪断端面に鉛直面部と内側への傾斜面部を連設
した板体を形成し、面取り部を外側にして該両剪断端面
を鉛直面部で接合させて対向する傾斜面部で形成される
凹溝を両端間に外向きに開口した筒状に曲げ加工し、該
接合部にレーザー溶接を施して溶融金属を両端間の凹溝
内に留めたことを特徴とする金属管体。1. A plate-shaped member which is bent and welded at both end portions and chamfered at an opening surface, chamfers a longitudinal edge of a long plate-shaped member, and press-shears the edge. A plate body having a vertical surface portion and an inwardly inclined surface portion connected to both sheared end surfaces is formed, and the chamfered portion is set outside and the two sheared end surfaces are joined by the vertical surface portion to form a groove formed by the opposed inclined surface portions. A metal pipe body which is bent into a cylindrical shape having an outward opening between both ends, and laser welded to the joint portion to retain the molten metal in a groove between both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7080774A JP2849563B2 (en) | 1995-03-13 | 1995-03-13 | Metal tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7080774A JP2849563B2 (en) | 1995-03-13 | 1995-03-13 | Metal tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08243638A JPH08243638A (en) | 1996-09-24 |
| JP2849563B2 true JP2849563B2 (en) | 1999-01-20 |
Family
ID=13727783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7080774A Expired - Lifetime JP2849563B2 (en) | 1995-03-13 | 1995-03-13 | Metal tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2849563B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19817910B4 (en) * | 1998-04-22 | 2014-11-20 | Rohs-Voigt Patentverwertungsgesellschaft Mbh | Torsional vibration damper and method for its production |
| JP3646873B2 (en) * | 2000-02-08 | 2005-05-11 | 日産自動車株式会社 | Assembling method of pressed products |
| JP4698940B2 (en) * | 2003-10-15 | 2011-06-08 | 本田技研工業株式会社 | Drum-like body forming method |
| JP4774222B2 (en) * | 2005-03-04 | 2011-09-14 | 石田鉄工株式会社 | Groove cover |
| FR2898068B1 (en) * | 2006-03-01 | 2009-01-16 | Valeo Equip Electr Moteur | DEVICE FOR ASSEMBLING A DRIVE MEMBER WITH A ROTOR-FITTED SHAFT OF A ROTATING ELECTRIC MACHINE |
| JP6214247B2 (en) * | 2013-07-05 | 2017-10-18 | 日本電産サンキョー株式会社 | Optical device manufacturing method and optical device |
-
1995
- 1995-03-13 JP JP7080774A patent/JP2849563B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08243638A (en) | 1996-09-24 |
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