JPS5916677A - Feeding method of welding wire - Google Patents
Feeding method of welding wireInfo
- Publication number
- JPS5916677A JPS5916677A JP12701082A JP12701082A JPS5916677A JP S5916677 A JPS5916677 A JP S5916677A JP 12701082 A JP12701082 A JP 12701082A JP 12701082 A JP12701082 A JP 12701082A JP S5916677 A JPS5916677 A JP S5916677A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- welding
- welding wire
- fed
- feeding
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は湾曲部を伴う送給経路に溶接ワイヤを送給する
際のワイヤの送給特性を改善した溶接ワイヤ送給方法に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a welding wire feeding method that improves the wire feeding characteristics when feeding the welding wire to a feeding path with a curved portion.
一般に連続した溶接ワイヤを使用するＣ０２溶接やＭＡ
Ｇ溶接、ＭＩＧ溶接等の消耗電極方式の自動アーク溶接
や、添加ワイヤを使用するＴ工Ｇ溶接、ろう接等に於い
て、溶接ワイヤを円滑に溶接個所まで送給してアーク部
に正確に供給する必要があることは云うまでもない。C02 welding or MA which generally uses continuous welding wire
In automatic arc welding using consumable electrodes such as G welding and MIG welding, and in T-work G welding and brazing that use additive wire, the welding wire is fed smoothly to the welding point and accurately hits the arc part. Needless to say, it is necessary to supply it.
ところで、溶接ワイヤを送給する送給径路（通常はワイ
ヤガイドチューブ等が使用される）の途中に湾曲部が存
在する場合、仮に真直ぐな溶接ワイヤを送給径路内に送
給しても、湾曲部を通過する際に湾曲歪を生じて、溶接
トーチ先端部を出たところでは開先方向と異なった方向
に偏位することが避けられ力い。By the way, if there is a curved part in the middle of the feeding path for feeding the welding wire (usually a wire guide tube etc. is used), even if a straight welding wire is fed into the feeding path, It is possible to prevent the welding torch from being deflected in a direction different from the groove direction when it exits the tip of the welding torch due to bending distortion occurring when passing through the curved portion.
特に狭隘な場所に溶接継手があって、使用する溶接トー
チに、いわゆるカーブドトーチと称するトーチの先端部
が極端に湾曲したものを使用しなければならない場合や
、ロボット溶接装置等において、手首の回動等によって
溶接ワイヤを送給する送給径路に極度な湾曲部を生じる
ことが避けられない場合、こうした湾曲部を溶接ワイヤ
が通過することによってワイヤ自身が湾曲変形し、トー
チ部先端からは送給径路中に存在する湾曲部の曲率半径
よりも大きな曲率半径をもって湾曲変形した溶接ワイヤ
が出てくることになり、溶接ワイヤの実際に供給される
位置が正規の供給位置から外れてしまい、溶接作業に支
障を来す結果となる。Particularly when there is a welding joint in a narrow space and a welding torch with an extremely curved tip called a so-called curved torch must be used, or when using robot welding equipment, wrist rotation is required. If it is unavoidable that the welding wire is extremely curved in the feed path due to movement, etc., the welding wire passes through such a curved portion, causing the wire itself to curve and deform, and the wire cannot be fed from the tip of the torch. The welding wire will come out curved and deformed with a radius of curvature larger than the radius of curvature of the curved part existing in the feeding path, and the actual feeding position of the welding wire will deviate from the normal feeding position, causing welding This will result in a hindrance to your work.
第１図は溶接トーチに＠述のカーブドトーチを使用して
溶接ワイヤを送給した場合に、溶接ワイヤがいかに湾曲
変形して送給されるかを説明した略図であって、図中１
はガイドチューブ、２はガイドチューブ先端に設けられ
る溶接トーチ、Ｗは溶接ワイヤを示している。また上記
溶接トーチ２の先端部は曲率半径Ｒの円弧状に約９０°
湾曲し、その他の部分については直線状に配置されてい
る。FIG. 1 is a schematic diagram illustrating how the welding wire is curved and deformed when the welding wire is fed using the curved torch mentioned above.
2 indicates a guide tube, 2 a welding torch provided at the tip of the guide tube, and W a welding wire. Further, the tip of the welding torch 2 has a circular arc shape with a radius of curvature R of approximately 90°.
It is curved and the other parts are straight.
ところで、このような送給径路中をガイドチューブｌの
基端部側に設けられた図示しかいワイヤ送給器によって
溶接ワイヤＷを矢印α方向に送給すると、溶接トーチ２
に至るまでの間では全く直線状に送給されるが、溶接ト
ーチ２の湾曲部２ａを通過する際に湾曲変形して、溶接
トーチ２を出て溶接部に至る空間では曲率半径Ｒ１の曲
り癖がつき、正規の溶接位置Ｐから大きく偏位した方向
に進む結果となる。By the way, when the welding wire W is fed in the direction of the arrow α through such a feeding path by the wire feeder (not shown) provided on the proximal end side of the guide tube l, the welding torch 2
Although it is fed in a completely straight line until it reaches , it is deformed into a curve when passing through the curved part 2a of the welding torch 2, and in the space where it exits the welding torch 2 and reaches the welding part, it is fed in a curve with a radius of curvature R1. This results in the welding progressing in a direction largely deviated from the normal welding position P.
勿論、この曲り癖によって溶接ワイヤｗに生じた湾曲部
４０曲率半径Ｒ１の値は送給径路における湾曲部（ここ
では溶接トーチ２の湾曲部ａを指す）の湾曲の程度が著
しい程、つまり上記湾曲部２ａの曲率半径Ｒが小さい程
小さくなる傾向にある。Of course, the value of the radius of curvature R1 of the curved portion 40 caused in the welding wire w due to this bending tendency increases as the degree of curvature of the curved portion in the feeding path (here, the curved portion a of the welding torch 2 is referred to) is significant, that is, the value of the radius of curvature R1 increases. The smaller the radius of curvature R of the curved portion 2a, the smaller the radius of curvature R tends to be.
表１は現在多用されている径１，２間のＣＯ２溶接用鋼
ワイヤについて、送給径路に存在する湾曲部の曲率半径
Ｒと湾曲変形した溶接ワイヤＷの曲率半径Ｒ１との相間
関係を実測によって求めた結果の一例を示しだものであ
る。Table 1 shows the actual measured correlation between the radius of curvature R of the curved part in the feeding path and the radius of curvature R1 of the welding wire W that has been curved and deformed for CO2 welding steel wires with diameters of 1 and 2, which are currently widely used. This shows an example of the results obtained.
また第１図に於いて溶接部の正規の溶接位置をＰとし、
溶接ワイヤＷの突出し長さをＬとして、この突出し長さ
Ｌと等距離にあって、かつ溶接ワイヤＷが実際に供給さ
れる位置をＰｌとして、ｐ、ｐ’間の距離δを溶接ワイ
ヤＷの湾曲変形によって生じるワイヤ先端部の偏位量と
すれば、表１ｖｃ示した実験結果に基づいて第２図の関
係が得られる。In addition, in Fig. 1, the normal welding position of the welded part is P,
Let the protrusion length of the welding wire W be L, and let Pl be the position equidistant from this protrusion length L and where the welding wire W is actually supplied, then the distance δ between p and p' is the welding wire W The relationship shown in FIG. 2 is obtained based on the experimental results shown in Table 1vc.
すなわち、同図の曲線（１）及び（２）は溶接ワイヤの
突出し長さＬをそれぞれ３０朋及び２０ｍｍに設定した
場合に於ける送給径路の曲率半径Ｒとワイヤの偏位量δ
との関係を示している。That is, curves (1) and (2) in the same figure represent the radius of curvature R of the feeding path and the amount of deviation δ of the wire when the protruding length L of the welding wire is set to 30 mm and 20 mm, respectively.
It shows the relationship between
ところで、この程度の溶接ワイヤを用いる溶接方法では
溶接ワイヤ先端部の偏位量δを少くとも０．５ ｍｍ以
下に抑える必要があることが一般に知られている。By the way, it is generally known that in a welding method using such a welding wire, it is necessary to suppress the deviation amount δ of the welding wire tip to at least 0.5 mm or less.
したがって第２図ｔ／ｌ、及びＱ２で示すように溶接ワ
イヤの突出し長さｂを３０ｍｍまたは２０ｍｍに設定し
た場合、送給径路に存在する湾曲部の曲率半径Ｒを１１
５＋＋＋ｍまたは９０ｍｍ程度以上になるよう相尚緩や
かに湾曲するような送給径路に維持しなければなら力い
という制約を課せられることになり、溶接装置を設計す
る上で太き ５−
な障害となっていた。Therefore, when the protrusion length b of the welding wire is set to 30 mm or 20 mm as shown in Fig. 2 t/l and Q2, the radius of curvature R of the curved part existing in the feeding path is 11
This imposes a constraint on the force required to maintain a feed path that curves gently so that the length is approximately 5+++ m or 90 mm or more, which is a major obstacle in designing welding equipment. It had become.
本発明はこのような事情に鑑みてなされたものであって
、その目的とするところは溶接ワイヤを送給する送給径
路の途中に極度な湾曲部を伴う場合でも、溶接ワイヤが
特定方向に湾曲変形を受けず、溶接ワイヤを溶接部の適
正位置に正確に送給することができる溶接ワイヤ送給方
法を提供することにある。The present invention has been made in view of the above circumstances, and its purpose is to prevent the welding wire from moving in a specific direction even when there is an extremely curved part in the feeding route for feeding the welding wire. It is an object of the present invention to provide a welding wire feeding method capable of accurately feeding a welding wire to a proper position of a welding part without being subjected to bending deformation.
このような目的を達成すべく本発明は以下の如く構成し
たことを特徴とする。In order to achieve such an object, the present invention is characterized by being configured as follows.
すなわち、湾曲部を伴う送給径路に溶接ワイヤを送給す
るもので、湾曲部を経て送給される溶接ワイヤをその湾
曲部の手前側で円周方向に捩りながら送給することによ
り、湾曲部の通過によって溶接ワイヤに生じる湾曲変形
がワイヤの周方向に均一に分散され、溶接ワイヤが直線
に近い状態で送給されるため、溶接ワイヤを溶接部の適
正位置に正確に送給することができるものである。In other words, the welding wire is fed through a feeding path that includes a curved part. The bending deformation that occurs in the welding wire as it passes through the welding part is evenly distributed in the circumferential direction of the wire, and the welding wire is fed in a nearly straight line, allowing the welding wire to be accurately fed to the proper position of the welding part. It is something that can be done.
以下、本発明の方法を第３図に示す実施例に ６− 基づいて説明する。Hereinafter, the method of the present invention will be described in an example shown in FIG. 6-6. I will explain based on this.
第３図は第１図に示す送給径路の途中にワイヤ捩り装置
１０を設けた状態を示しており、竹にこの実施例では曲
率半径Ｒの湾曲部１１を伴う溶接トーチ１２の手前側に
ワイヤ捩り装置１０を設け、この湾曲部１１０手前側で
溶接ワイヤＷをその円周方向（図中矢印βで示す方向）
に捩るようにしている。FIG. 3 shows a state in which the wire twisting device 10 is provided in the middle of the feeding path shown in FIG. A wire twisting device 10 is provided, and the welding wire W is twisted in the circumferential direction (direction indicated by arrow β in the figure) on the near side of this curved portion 110.
I try to twist it.
ところで上記ワイヤ捩り装置１０は駆動モータ１３の出
力軸１３ａに互いに対峙する１対の支持アーム１４．１
４を突設したブラケット１５を取着して両支持アーム１
４．１４の先端部［１対の加圧ロール１６．１６を支軸
１７．１７を介して軸支したもので、両支持アーム１４
．１４間に図示しがいバネ部材、及びバネ圧調整部材を
設けて両加圧ロール１６゜１６によって溶接ワイヤＷを
挾圧するとともに、その挟圧力をバネ圧調整部材によっ
て適宜調整できるようにしている。By the way, the wire twisting device 10 has a pair of support arms 14.1 facing each other on the output shaft 13a of the drive motor 13.
Attach the bracket 15 protruding from the support arm 1
The tip of 4.14 [A pair of pressure rolls 16.16 are supported via support shafts 17.17, and both support arms 14
．． An insulator spring member and a spring pressure adjustment member (not shown) are provided between the pressure rolls 16 and 14 so that the welding wire W is clamped by both pressure rolls 16 and 16, and the clamping force can be appropriately adjusted by the spring pressure adjustment member.
尚、上記加圧ロール１６．１６の外周にその周方向に治
って凹みを設け、溶接ワイヤＷを挾圧して回転した場合
に溶接ワイヤＷが加圧ロール１６゜１６から外れがいよ
うにしている。Incidentally, a recess is provided on the outer periphery of the pressure roll 16.16 in the circumferential direction to prevent the welding wire W from coming off from the pressure roll 16.16 when the welding wire W is clamped and rotated.
次にこの実施例の作用について説明する。溶接ワイヤＷ
を図示しないワイヤ送給器によって矢印α方向に送給す
ると、溶接トーチ１２の手前側に設けられたワイヤ捩り
装置１０によって溶接ワイヤＷがその円周方向に捩じら
れながら溶接トーチ１２内を挿通し、この溶接トーチ１
２から出た溶接ワイヤＷは曲率半径Ｒの湾曲部１１を通
過したにもかかわらず、殆んど直線状態のままで正規の
溶接位置Ｐの極めて近い位置を通ることになる。Next, the operation of this embodiment will be explained. Welding wire W
When the welding wire W is fed in the direction of the arrow α by a wire feeder (not shown), the welding wire W is twisted in the circumferential direction by the wire twisting device 10 provided on the front side of the welding torch 12 and inserted through the welding torch 12. And this welding torch 1
Although the welding wire W coming out from the welding wire W passes through the curved portion 11 having the radius of curvature R, it passes through a position extremely close to the normal welding position P while remaining almost straight.
このように本発明の送給方法によれば、溶接ワイヤＷは
外見上、略直線に近い状態で溶接部に送給されることに
なる。As described above, according to the feeding method of the present invention, the welding wire W is fed to the welding part in a state that is approximately straight in appearance.
ここで正規の溶接位置Ｐに対する溶接ワイヤＷの偏位量
δを前述の第２図の測定結果を求める際に使用した溶接
ワイヤと同一規格の溶接ワイヤ、つまり径１．２πｍの
ＣＯ２溶接用鋼ワイヤを用いて詳細に実測した結果を第
４図に示す。Here, the deviation amount δ of the welding wire W with respect to the regular welding position P is determined by using a welding wire of the same standard as the welding wire used to obtain the measurement results shown in FIG. Figure 4 shows the results of detailed measurements using a wire.
同図に於いて、曲線（３）、 （４）、 （５）はそれ
ぞれワイヤ捩り装置１０ノ回転速度Ｎを１２５．１６７
，２５０ｒｐｍに変えた場合に於ける湾曲部１１の曲率
半径ＲＶＣ対する溶接ワイヤＷの偏位量δの変化を測定
したものである。In the same figure, curves (3), (4), and (5) each indicate the rotational speed N of the wire twisting device 10 at 125.167.
, 250 rpm, the change in the deviation amount δ of the welding wire W with respect to the radius of curvature RVC of the curved portion 11 is measured.
また溶接ワイヤＷは一定速度で送給径路内を送給される
訳であって、その速度を■とすると溶接ワイヤＷの捩り
ピッチＰは次式で表わされるＯ
■
今、溶接ワイヤＷの送給速度Ｖ ＝ ｌｏｍ／ｗｉｎ
とすると、上記各曲線［３）、 ＋４＋、（５）に於け
る捩りピッチＰの値はそれぞれ８０ｍｍ＋ ６０ｍｍ
＋ ４０ｔｎｍとなる。In addition, the welding wire W is fed through the feeding path at a constant speed, and if that speed is ■, the torsion pitch P of the welding wire W is expressed by the following formula O ■ Now, the welding wire W is fed Feeding speed V = lom/win
Then, the value of the torsion pitch P in each of the above curves [3], +4+, and (5) is 80 mm + 60 mm, respectively.
+40tnm.
ところで、上記各曲線（ａｌ＋ （４Ｌ（５）を第２図
に示す曲線（１）及び（２）と対比させて送給径路に生
じる湾曲部の曲率半径Ｒに対する溶接ワイヤＷの偏位量
を比較してみると、本発明の方法による場合、同じ曲率
半径Ｒのときのワイヤの偏位量−９＝
δが従来の送給方法の場合に比して遥かに低い値に減少
している。By the way, by comparing each of the above curves (al+ (4L(5)) with the curves (1) and (2) shown in FIG. By comparison, when using the method of the present invention, the amount of wire deflection -9 = δ at the same radius of curvature R is reduced to a much lower value than when using the conventional feeding method. .
また本発明によれば上記各曲線＋３１． ＋４）、（５
）を比較してわかるように、溶接ワイヤＷの偏位量δが
曲線（３）よりも曲線（４）の方が、また曲線（４）よ
りも曲線（５）の方が減少している。つまり、このこと
はワイヤの回転速度Ｎが犬で、捩りピッチＰの値が小さ
くなる程この発明の効果が顕著になることを示している
。Further, according to the present invention, each of the above curves +31. +4), (5
), the deviation amount δ of the welding wire W is smaller in curve (4) than in curve (3), and is smaller in curve (5) than in curve (4). . In other words, this shows that the effect of the present invention becomes more pronounced as the rotational speed N of the wire increases and the value of the twist pitch P decreases.
また、溶接ワイヤＷの溶接部に於ける偏位量δの実用上
の限界は前述した通り０．５ ｍｍであって、この偏位
量に於ける送給径路の曲率半径Ｒの値はＱ３．Ｑ４．Ｑ
５に示すようにそれぞれ７５ｍｍ＋５５ｍｍ＋２０ｍｍ
であって、従来の送給方法に於けるＱｌ、Ｑ２の値、す
なわち１１５ｍｍ及び９０ｍ。Furthermore, the practical limit of the amount of deviation δ at the welding part of the welding wire W is 0.5 mm as described above, and the value of the radius of curvature R of the feeding path at this amount of deviation is Q3. ．． Q4. Q
75mm+55mm+20mm respectively as shown in 5.
The values of Ql and Q2 in the conventional feeding method are 115 mm and 90 m.
に比べて遥かに低い値になっている。The value is much lower than that of .
つまり、このことは溶接ワイヤの溶接部に於ける偏位量
δを所定の値以下に抑えなければならない制約下で、本
発明による方法、によれば、送給径路に生じる湾曲部の
曲率半径Ｒが従来の一１〇−
送給方法に比してかなり小さい値まで許容されるもので
あって、送給径路を設定する上での自由度が大幅に拡大
されたことになる。In other words, under the constraint that the amount of deviation δ at the welding part of the welding wire must be suppressed to a predetermined value or less, according to the method according to the present invention, the radius of curvature of the curved part generated in the feeding path can be reduced. This allows R to be much smaller than in the conventional 110-meter feeding method, and the degree of freedom in setting the feeding path is greatly expanded.
また換言すれば、本発明の方法による場合は溶接ワイヤ
の送給径路中に相当極端な湾曲部が存在しても溶接ワイ
ヤは殆んど湾曲変形することなく、略直線状のままで溶
接部に正確に送給されることを意味している。In other words, when using the method of the present invention, even if there is a fairly extreme curved part in the welding wire feeding path, the welding wire hardly curves and deforms and remains substantially straight at the welding area. This means that it will be delivered accurately.
また第５図は前述の測定と同様、径１．２ ａｍのＣＯ
２溶接用鋼ワイヤを用いてワイヤの回転速度を順次変化
させ、捩りピッチＰを変化させた場合に於けるワイヤの
偏位量δの変化を送給径路に存在する湾曲部の曲率半径
Ｒの値を種々に変更して測定し、その結果をグラフで示
したものである。Also, Figure 5 shows a CO with a diameter of 1.2 am, similar to the measurement described above.
2. Using a welding steel wire, the rotational speed of the wire is sequentially changed and the twist pitch P is changed, and the change in the deviation amount δ of the wire is expressed as the change in the radius of curvature R of the curved part in the feeding path. Measurements were made with various values changed, and the results are shown in a graph.
このグラフからも前述の第４図に示づグラフと同様、捩
りピッチＰが小さくなればなる程偏位量δの値も小さく
なり、本発明のワイヤ送給方法のように溶接ワイヤを湾
曲部の手前側で捩じりながら送給する方法が大いに効果
のあることが容易に理解される。Similar to the graph shown in FIG. 4, this graph also shows that the smaller the torsion pitch P, the smaller the deviation amount δ. It is easily understood that the method of feeding the material while twisting it on the near side is very effective.
次に、本発明のワイヤ送給方法による場合、従来の送給
方法に比してワイヤの偏位量が如何に減少すかについて
説明する。Next, a description will be given of how the wire feeding method of the present invention reduces the amount of wire deviation compared to the conventional feeding method.
第６図（ａ）は通常のワイヤ送給方法によって、湾曲し
たワイヤガイド２０の先端部から送り出される溶接ワイ
ヤＷの湾曲状態を示したもので、溶接ワイヤＷにはこの
ワイヤの中心線に沿って曲率半径Ｒｏとなるような曲が
り癖を生じている。FIG. 6(a) shows the curved state of the welding wire W fed out from the tip of the curved wire guide 20 by a normal wire feeding method. A bending tendency occurs such that the radius of curvature becomes Ro.
直線状のワイヤＷがこのように湾曲するのは、ワイヤガ
イド２０の湾曲部を通過する際に、ワイヤＷが曲げ変形
を起こしたことによるが、これは曲率半径Ｒ２で示すワ
イヤＷの外周に近い部分に引張応力が生じ、内周に近い
Ｒ１で示す部分に圧縮応力が生じ、その結果として円弧
状にワイヤＷが変形したものである。The reason why the straight wire W curves in this way is that the wire W undergoes bending deformation when passing through the curved part of the wire guide 20. Tensile stress is generated in a portion close to the inner circumference, and compressive stress is generated in a portion indicated by R1 near the inner periphery, and as a result, the wire W is deformed into an arc shape.
同図において引張力が作用して伸び変形を起した部分に
斜線を施している。In the figure, the portions where tensile force is applied and elongation deformation occurs are shaded.
また第６図（ｂ）は本発明のワイヤ送給方法によって第
６図（ａ）と同様に湾曲したワイヤガイド２０の先端部
から送り出される溶接ワイヤＷの状態を示したものであ
って、このワイヤＷの周一ヒの１点Ｓ。が時間の経過と
ともにどのように移動するかをｓｌ、 ｓ２． ｓ３．
ｓ、で示している。Moreover, FIG. 6(b) shows the state of the welding wire W fed out from the tip of the curved wire guide 20 in the same manner as in FIG. 6(a) by the wire feeding method of the present invention. One point S of Shuichihi of wire W. sl, s2. s3.
It is indicated by s.
ワイヤＷのＳ。の部分がワイヤガイド２０の先端部から
出た瞬間Ｔ。の時点ではワイヤＷがワイヤガイド２０の
湾曲方向と同一方向に曲げ変形を受け、このＳ。の部分
に引張応力が作用して伸び変形を受けている。Wire W S. The moment T emerges from the tip of the wire guide 20. At the time point S, the wire W undergoes bending deformation in the same direction as the bending direction of the wire guide 20. Tensile stress is applied to this part, causing it to undergo elongation deformation.
捩りピッチＰのＶ４期間が経過した時点Ｔ１では、Ｔｏ
に於けるＳ。の部分がワイヤＷの中心軸に対して９００
回転してＳ、の位置に到達し、この８１におけるワイヤ
Ｗの湾曲方向もＳ。の部分に対して９００ずれている。At time T1 when the V4 period of the torsion pitch P has elapsed, To
S in. is 900 degrees relative to the central axis of the wire W.
It rotates and reaches the position S, and the bending direction of the wire W at this point 81 is also S. It is shifted by 900 from the part.
同様に溶接ワイヤＷが１／４ピツチづつ回転してＴ２．
Ｔ３．Ｔ４となる時点ではＳ。の部分がＳ２．Ｓ３゜Ｓ
４と９００づつ回転しながら前進し、湾曲方向もそれに
従って９０°づつずれてゆく。Similarly, the welding wire W rotates by 1/4 pitch until T2.
T3. S at the time of T4. The part is S2. S3゜S
It moves forward while rotating by 4 and 900 degrees, and the direction of curvature shifts by 90 degrees accordingly.
尚、同図においてワイヤＷの斜線を施した部分は引張応
力が作用して伸び変形を起した部分１３−
を示している。In the figure, the shaded portion of the wire W indicates the portion 13- where tensile stress is applied and elongation deformation occurs.
したがって、このような変化を溶接ワイヤの１ピッチ以
上の捩りピッチ区間で考えた場合、溶接ワイヤの各部に
作用する引張力や圧縮力がワイヤの円周方向に均一に分
散され、溶接ワイヤがその円周方向に対して平均的に変
形することになる訳で、第６図（ａ） Ｋ示すように溶
接ワイヤが特定の方向のみに引張力や圧縮力を受ける場
合とは全く異なった現象を呈することが容易に理解され
る。Therefore, when considering such changes in the torsional pitch section of the welding wire of one pitch or more, the tensile and compressive forces acting on each part of the welding wire are uniformly distributed in the circumferential direction of the wire, and the welding wire is This means that the welding wire deforms evenly in the circumferential direction, which is a completely different phenomenon than when the welding wire is subjected to tensile or compressive force only in a specific direction, as shown in Figure 6(a). It is easy to understand that
またこのような状態にある溶接ワイヤを巨視的にみた場
合、ワイヤの進行方向は常に一定であって、略直線に近
い状態でワイヤが送給されることになる。Further, when the welding wire in such a state is viewed macroscopically, the direction of movement of the wire is always constant, and the wire is fed in a state close to a straight line.
したがって、溶接部における正規の溶接位置からの偏位
量も極めて少なく、安定した溶接作業を実施できるもの
である。Therefore, the amount of deviation from the normal welding position in the welded part is extremely small, and stable welding work can be performed.
尚、上記実施例では溶接トーチ１２に湾曲部１１を伴う
場合について説明したが、溶接トーチに限らず、溶接ワ
イヤを溶接個所まで送給する送１４−
給径路中の如何なる場所に湾曲部が生じる場合について
も適用できるものである。In the above embodiment, a case where the welding torch 12 includes the curved portion 11 has been described, but the curved portion is not limited to the welding torch, and the curved portion may occur anywhere in the feed path 14 for feeding the welding wire to the welding location. It can also be applied to cases.
また溶接ワイヤを捩る個所についても溶接トーチの手前
側に限るものでなく、例えばガイドで溶接ワイヤをその
円周方向に捩じるようにすればよい。Further, the location where the welding wire is twisted is not limited to the front side of the welding torch, and the welding wire may be twisted in the circumferential direction using a guide, for example.
第１図は従来技術の問題点を説明するためのワイヤ送給
径路の概略図、第２図は第１図に示すワイヤ送給径路に
溶接ワイヤを送給した場合の湾曲部の曲率半径と溶接ワ
イヤの偏位量との関係を示すグラフ、第３図は本発明の
１実施例を示す概略図、第４図は同実施例における湾曲
部の曲率半径と溶接ワイヤの偏位量との関係を示すグラ
フ、第５図は同実施例における溶接ワイヤの捩りピッチ
と溶接ワイヤの偏位量との関係を示すグラフ、第６図（
ａ）（ｂ） Ｖｉそれぞれ従来の送給方法と本発明によ
る送給方法によって送給した場合の溶接ワイヤの変形状
態を示す説明図である。
１１・・湾曲部
１２・・送給径路（溶接トーチ）
Ｗ・・溶接ワイヤ
特許出願人 大阪電気株式会社
代理人 弁理土鈴江孝−
第６ 図（ａ）
第６ ｍｂ）Fig. 1 is a schematic diagram of a wire feeding path for explaining the problems of the prior art, and Fig. 2 shows the radius of curvature of the curved part when welding wire is fed through the wire feeding path shown in Fig. 1. Graph showing the relationship between the deviation amount of the welding wire, FIG. 3 is a schematic diagram showing one embodiment of the present invention, and FIG. 4 shows the relationship between the radius of curvature of the curved part and the deviation amount of the welding wire in the same embodiment. A graph showing the relationship, FIG. 5, is a graph showing the relationship between the twist pitch of the welding wire and the amount of deviation of the welding wire in the same example, and FIG.
a) and (b) Vi are explanatory diagrams showing deformed states of welding wire when fed by a conventional feeding method and a feeding method according to the present invention, respectively. 11...Curved portion 12...Feeding path (welding torch) W...Welding wire patent applicant Osaka Electric Co., Ltd. Attorney Takashi Tsuzue - Figure 6 (a) 6 mb)
Claims (1)
湾曲部を経て送給される溶接ワイヤをその湾曲部の手前
側で円周方向に捩じりながら送給することを特徴とする
溶接ワイヤ送給方法。The welding wire is fed through a feeding path with curved parts.
A welding wire feeding method characterized in that the welding wire fed through a curved section is fed while being twisted in the circumferential direction on the near side of the curved section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12701082A JPS5916677A (en) | 1982-07-20 | 1982-07-20 | Feeding method of welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12701082A JPS5916677A (en) | 1982-07-20 | 1982-07-20 | Feeding method of welding wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5916677A true JPS5916677A (en) | 1984-01-27 |
| JPH0329513B2 JPH0329513B2 (en) | 1991-04-24 |
Family
ID=14949445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12701082A Granted JPS5916677A (en) | 1982-07-20 | 1982-07-20 | Feeding method of welding wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5916677A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736712A (en) * | 1995-07-20 | 1998-04-07 | Toyota Jidosha Kabushiki Kaisha | Arc welding torch |
-
1982
- 1982-07-20 JP JP12701082A patent/JPS5916677A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736712A (en) * | 1995-07-20 | 1998-04-07 | Toyota Jidosha Kabushiki Kaisha | Arc welding torch |
| CN1079310C (en) * | 1995-07-20 | 2002-02-20 | 丰田自动车株式会社 | Arc welding torch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0329513B2 (en) | 1991-04-24 |
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