JPH0466643B2 - - Google Patents
Info
- Publication number
- JPH0466643B2 JPH0466643B2 JP60296968A JP29696885A JPH0466643B2 JP H0466643 B2 JPH0466643 B2 JP H0466643B2 JP 60296968 A JP60296968 A JP 60296968A JP 29696885 A JP29696885 A JP 29696885A JP H0466643 B2 JPH0466643 B2 JP H0466643B2
- Authority
- JP
- Japan
- Prior art keywords
- bead
- weld bead
- movable base
- pipe
- base
- 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
- 239000011324 bead Substances 0.000 claims description 76
- 238000003825 pressing Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 description 48
- 239000000463 material Substances 0.000 description 10
- 238000003466 welding Methods 0.000 description 5
- 241001070941 Castanea Species 0.000 description 3
- 235000014036 Castanea Nutrition 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は溶接を終えたストレートシーム管の
溶接部内面に生じる溶接ビードを回転バイトにて
切削除去する装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for cutting and removing weld beads formed on the inner surface of a welded portion of a straight seam pipe after welding using a rotating tool.
ストレートシーム溶接された大径管の管内面溶
接ビードは、管を周継溶接する際のクランプ等の
障害となるため、少なくとも管端部分については
確実な除去を必要とする場合が多い。この除去装
置としては、例えば特開昭58−181530号公報およ
び実開昭59−171056号公報に記載された装置が公
知であるが、ストレートシーム溶接管は完全な真
円ではなく、また真直性も低く、上記装置では完
全に対処できない。その理由は次のとおりであ
る。
The weld bead on the inner surface of a straight seam welded large-diameter pipe becomes an obstacle to clamps and the like when circumferentially welding the pipe, so it is often necessary to reliably remove at least the end portion of the pipe. As this removing device, for example, the devices described in JP-A-58-181530 and Utility Model 59-171056 are known, but straight seam welded pipes are not perfectly round and are not straight. is also low, and cannot be completely addressed by the above device. The reason is as follows.
特開昭58−181530号公報に記載された装置は、
第４図イに示すように溶接管１の内面溶接ビード
１′に回転軸３５を平行させた回転砥石３６を管
周方向に揺動させながら回転させて、溶接ビード
１′を除去するものである。また、実開昭59−
171056号に記載の装置は、第４図ロに示すよう
に、溶接ビード１′に対して回転軸３５を直角に
設けた回転砥石３６でビード除去を行うものであ
る。
The device described in Japanese Patent Application Laid-Open No. 181530/1983 is
As shown in FIG. 4A, the weld bead 1' is removed by rotating a rotary grindstone 36, which has a rotating shaft 35 parallel to the inner weld bead 1' of the welded pipe 1, while swinging in the circumferential direction of the pipe. be. Also, Utsukai Showa 59-
The device described in No. 171056, as shown in FIG. 4B, removes the bead using a rotary grindstone 36 having a rotating shaft 35 perpendicular to the weld bead 1'.
一方、溶接管１は第５図イ，ロに示すように、
完全な真円、真直ではない。ビード除去の対象と
なる管端部に限つて言えば、栗形の軸横断面形状
を有し、軸横断面形状は溶接ビード１′の側が外
側へ反りかえるのが一般的である。また、これら
の傾向は管毎に大小があるのみならず、真円、真
直化を主目的とする拡管工程以前（ビード除去の
段階）では特に著しい。 On the other hand, the welded pipe 1 is as shown in Fig. 5 A and B.
Perfectly round, not straight. As for the end of the tube from which the bead is to be removed, it generally has a chestnut-shaped axial cross-sectional shape, and the axial cross-sectional shape is curved outward on the weld bead 1' side. Furthermore, these trends not only vary in size for each tube, but are particularly noticeable before the tube expansion step (bead removal stage) whose main purpose is to make the tube true and straight.
このような溶接管１に対して第４図イ，ロの装
置を用いた場合、前者の装置では溶接管１の栗形
が顕著な場合に溶接ビード１′両脇の母材部分を
削る危険があり、この危険性は回転砥石３６が大
径なほど大きい。言うまでもないが、溶接管１で
は肉厚下限が定められており、溶接ビード１′や
その近傍は応力集中を避けるため、特に厳密な肉
厚管理が要求されるところがある。更に、回転砥
石３６には摩耗が生じ、その摩耗に応じて溶接ビ
ード１′に対する回転砥石３６の相対位置を逐一
変化させなければならない煩雑さがある。また、
回転砥石３６は研削によつて粉塵や振動を生じ、
近接機器の機械的精度を低下させる問題もある。
更にまた、回転砥石３６では研削能率を上げるた
めに大径化、大粒化を必要とするが、このような
砥石は研削面精度を低下させると同時に、前述し
た母材切削の危険性を生じる。 When the devices shown in Fig. 4 A and B are used for such a welded pipe 1, there is a danger that the former device may scrape the base metal on both sides of the weld bead 1' if the welded pipe 1 has a pronounced chestnut shape. This risk increases as the diameter of the rotating grindstone 36 increases. Needless to say, a lower limit of the wall thickness is determined for the welded pipe 1, and particularly strict control of the wall thickness is required at the weld bead 1' and its vicinity in order to avoid stress concentration. Furthermore, the rotating grindstone 36 is subject to wear, and the relative position of the rotating grindstone 36 with respect to the weld bead 1' must be changed from time to time in accordance with the wear. Also,
The rotary grindstone 36 generates dust and vibrations due to grinding,
There is also the problem of reducing the mechanical accuracy of nearby equipment.
Furthermore, the rotary grindstone 36 needs to have a larger diameter and larger grains in order to improve grinding efficiency, but such a grindstone reduces the accuracy of the grinding surface and at the same time poses the risk of cutting the base material described above.
第４図ロに示す後者の装置も母材切削の危険性
を回避するためには小径の回転砥石３６が必要で
あり、小径の砥石では研削能率が低下する等、前
者の装置と同じ問題を有する。 The latter device shown in Figure 4B also requires a small-diameter rotary grindstone 36 to avoid the danger of cutting the base material, and suffers from the same problems as the former device, such as a small-diameter grindstone reducing grinding efficiency. have
本発明はこれらの問題点を全て解決し得る管内
面溶接ビード除去装置を提供するもので、その特
徴とするところは実施例図面第１図イ，ロに示す
ように、内面溶接ビードを除去しようとする溶接
管１の内部にあつて前記内面溶接ビード１′に対
して相対平行移動する第１の移動ベース５と、こ
の第１の移動ベース５に前記内面溶接ビード１′
に対し押圧手段１６をもつて進退すべく取付けた
第２の移動ベース１４と、この第２の移動ベース
１４に前記第１の移動ベース５の移動方向に前傾
または後傾すべく取り付けた傾動ヘツド１８と、
この傾動ヘツド１８の傾斜角θ調整用スクリユロ
ツド２１と、上記傾動ヘツド１８に前記内面溶接
ビード１′に向けて取付けた回転バイト２７と、
この回転バイト２７に近接して前記傾動ヘツド１
８に取付けられ、回転バイト２７との相対突出長
さがスクリユロツド３３で調整でき、かつ固定で
きる倣いローラ３２とを備える点にある。
The present invention provides an apparatus for removing weld beads on the inner surface of a tube that can solve all of these problems, and its features are as shown in FIGS. 1A and 2B of the embodiment drawings. A first movable base 5 which is located inside the welded pipe 1 and moves in parallel relative to the inner weld bead 1';
A second movable base 14 is attached to the second movable base 14 so as to move forward or backward with a pressing means 16, and a tilting base is attached to the second movable base 14 so as to tilt forward or backward in the moving direction of the first movable base 5. Head 18 and
A screw rod 21 for adjusting the inclination angle θ of the tilting head 18, a rotating tool 27 attached to the tilting head 18 facing the inner weld bead 1',
The tilting head 1 is located close to the rotating tool 27.
8, the protruding length relative to the rotary tool 27 can be adjusted with a screw rod 33, and a copying roller 32 can be fixed.
このビード除去装置は基本的には、溶接管１の
内部にブーム３を挿入しておいて、押圧手段１６
により第２の移動ベース１４を内面溶接ビード
１′に向けて押出し、溶接管１の内面との間を倣
いローラ３２により規制した状態で回転バイト２
７を回転させながら第１の移動ベース５を内面溶
接ビード１′に沿つて移動させることにより、内
面溶接ビード１′を除去して行くものであるが、
ビード研削工具として回転バイト２７を使用して
いるため、摩耗が少なく粉塵や振動も事実上生じ
ず、また、小径で研削能力に優れるばかりでな
く、傾動ヘツド１８の傾斜角θを変えることによ
り内面溶接ビード１′の切削円弧半径を自由に調
整できる。すなわち、傾動ヘツド１８を直立させ
た状態では内面溶接ビード１′の切削面は平面で
あるが、傾動ヘツド１８に傾斜角θを与えること
によりビード切削面はビード長手方向から見て円
弧となり、その半径は傾斜角θが大きくなるにし
たがつて小さくなる。そして、この円弧半径調整
機能は回転バイト２７が本来的に小径であること
とあいまつて、ビードとその近傍の肉厚管理を非
常に厳密なものとする。
This bead removal device basically consists of a boom 3 inserted into a welded pipe 1, and a pressing means 16
The second movable base 14 is pushed out toward the inner weld bead 1', and while the distance between it and the inner surface of the welded pipe 1 is regulated by the copying roller 32, the rotating tool 2 is moved.
The inner weld bead 1' is removed by moving the first moving base 5 along the inner weld bead 1' while rotating the welding base 7.
Since the rotary cutting tool 27 is used as the bead grinding tool, there is little wear and virtually no dust or vibration is generated.In addition, the small diameter provides excellent grinding ability, and by changing the inclination angle θ of the tilting head 18, the inner surface can be easily removed. The cutting arc radius of the weld bead 1' can be freely adjusted. That is, when the tilting head 18 is in an upright state, the cut surface of the inner weld bead 1' is a flat surface, but by giving the tilting head 18 an inclination angle θ, the bead cut surface becomes an arc when viewed from the longitudinal direction of the bead. The radius becomes smaller as the inclination angle θ becomes larger. This arc radius adjustment function, together with the fact that the rotary cutting tool 27 is inherently small in diameter, makes the thickness control of the bead and its vicinity extremely strict.
第１図イ，ロは本考案を実施した管内面溶接ビ
ード除去装置の一例についてその構造を示す横断
平面図（同図イ）および縦断側面図（同図ロ）で
ある。
FIGS. 1A and 1B are a cross-sectional plan view (FIG. 1A) and a longitudinal sectional side view (FIG. 1B) showing the structure of an example of a pipe inner weld bead removal device embodying the present invention.
同図によれば、溶接管１はその溶接部を上にし
た状態で横たわつており、１′は管内面溶接ビー
ド、２はタブ板である。管内に挿入されるブーム
３は側面コ字形フレームを溶接管１の上側管端部
に管内外よりクランプして、その下顎部を管内に
挿入する形式のもので、４は溶接管１の内面側に
当接する下側クランパーを示している。上側クラ
ンパーおよびコ字形フレームの上顎部ならびに下
顎部との連結部分は説明の便宜上、図示を省略し
てある。 According to the figure, a welded pipe 1 is lying with its welded part facing up, 1' is a weld bead on the inner surface of the pipe, and 2 is a tab plate. The boom 3 inserted into the pipe is of a type in which a side U-shaped frame is clamped to the upper end of the welded pipe 1 from the inside and outside of the pipe, and its lower jaw is inserted into the pipe. The lower clamper is shown in contact with the lower clamper. For convenience of explanation, the upper clamper and the connecting portions of the U-shaped frame with the upper jaw and lower jaw are not shown.
ブーム３にはその長手方向に移動可能に第１の
移動ベース５が取付けられており、その管奥側部
分にブラケツト６を備えている。以後、管奥側を
前方、その反対側を後方と称する。ブーム３の前
端部にはモータ７が取付けられ、その回転軸に固
着したギア８がギア(9)と係合する。ギア９はその
胴部９′がベアリング１０′を介してブーム３に固
着された軸受１０に支持されるとともに、胴部
９′の内側にナツト１１を固定的に嵌合させてあ
る。ナツト１１にはブーム３に平行なスクリユウ
軸１２が螺合し、その後端部が、第１の移動ベー
ス５の前部に取付けたブラケツト６に否回転に係
着される。 A first movable base 5 is attached to the boom 3 so as to be movable in its longitudinal direction, and a bracket 6 is provided on the back side of the tube. Hereinafter, the inner side of the tube will be referred to as the front, and the opposite side will be referred to as the rear. A motor 7 is attached to the front end of the boom 3, and a gear 8 fixed to its rotating shaft engages with a gear (9). The gear 9 has a body 9' supported by a bearing 10 fixed to the boom 3 via a bearing 10', and a nut 11 is fixedly fitted inside the body 9'. A screw shaft 12 parallel to the boom 3 is screwed into the nut 11, and its rear end is non-rotatably engaged with a bracket 6 attached to the front of the first movable base 5.
第１の移動ベース５の後端部にはアリ溝１３を
介して第２の移動ベース１４が上下に移動可能に
取付けられており、その上部前方に張出した腕部
１５に、第１の移動ベース５の後部に立設した押
圧手段としてのシリンダー１６のロツド１７先端
が係着される。第２の移動ベース１４は後方に向
つて開放された平面コ字形のブラケツト構造で、
これに傾動ヘツド１８が軸１９にて後方へ傾斜す
るよう支持されている。２１は第２の移動ベース
１４の後方下部に張出した腕２２に垂直に螺合す
るスクリユウロツドで、その上端が、傾動ヘツド
１８の側方に張出した腕２３の下面に当接して、
傾動ヘツド１８の傾斜角θを調整する。また、２
４は第２の移動ベース１４の側板部に刻設された
ガイド孔２５を貫通し傾動ヘツド１８にねじ込ま
れる傾斜角θのロツクボルトである。 A second movable base 14 is attached to the rear end of the first movable base 5 via a dovetail groove 13 so as to be movable up and down. The tip of a rod 17 of a cylinder 16 serving as a pressing means provided upright at the rear of the base 5 is engaged. The second moving base 14 has a planar U-shaped bracket structure that is open toward the rear.
A tilting head 18 is supported on this by an axis 19 so as to be tilted rearward. Reference numeral 21 denotes a screw rod which is vertically screwed into the arm 22 extending from the rear lower part of the second movable base 14, and its upper end abuts the lower surface of the arm 23 extending laterally of the tilting head 18.
The tilt angle θ of the tilting head 18 is adjusted. Also, 2
Reference numeral 4 designates a lock bolt having an inclination angle θ that passes through a guide hole 25 formed in the side plate portion of the second movable base 14 and is screwed into the tilting head 18.
傾動ヘツド１８の上部にはチヤツク２６が上方
より差込まれ、これに上向きに回転バイト２７が
装着される。チヤツク２６は、スクリユウロツド
２８にて下方へ引くことにより傾動ヘツド１８に
固定される。詳細図示省略したが、チヤツク２６
は傾動ヘツド１８の内部においてベアリングによ
り支持されており、その内輪が、傾動ヘツド１８
の下部に固着されたモータ２９の回転軸とギア結
合して、チヤツク２６および回転バイト２７を回
転させる。 A chuck 26 is inserted into the upper part of the tilting head 18 from above, and a rotating tool 27 is attached to the chuck in an upward direction. The chuck 26 is secured to the tilting head 18 by pulling downwardly on the screw rod 28. Although detailed illustrations are omitted, check 26
is supported by a bearing inside the tilting head 18, and its inner ring is supported by a bearing inside the tilting head 18.
The chuck 26 and the rotary cutting tool 27 are rotated by being gear-coupled with the rotating shaft of a motor 29 fixed to the lower part of the rotary shaft.
回転バイト２７はスローアウエイタイプの超硬
チツプを円柱状ヘツド端面の円周上に複数個（通
常３個）取り付けたもので、具体的にはエンドミ
ル、マイスカツターと称される物等である。 The rotary cutting tool 27 has a plurality (usually three) of throw-away type carbide tips attached to the circumference of the end face of a cylindrical head, and is specifically a device called an end mill, a machining cutter, or the like.
回転バイト２７の直径は除去しようとする内面
溶接ビードの巾に対して決められ、ビード巾より
小さいとビードの削り残しが生じ、またビード巾
の２倍を超えるとビード両脇の母材部を削り込む
危険が生じるので、ビード巾の１〜２倍の範囲が
適当である。 The diameter of the rotary cutting tool 27 is determined based on the width of the inner weld bead to be removed. If it is smaller than the bead width, the bead will remain uncut, and if it exceeds twice the bead width, it will damage the base material on both sides of the bead. Since there is a risk of scraping, a range of 1 to 2 times the bead width is appropriate.
回転バイト２７の回転数は無段階調節可能と
し、ストレートシーム溶接管の材質、ビードの大
きさ等に応じて最適回転数を設定しうるようにす
るのがよい。 It is preferable that the rotational speed of the rotary cutting tool 27 is steplessly adjustable so that the optimum rotational speed can be set according to the material of the straight seam welded pipe, the size of the bead, etc.
傾動ヘツド１８にはまた、その前面にアリ溝３
０を介してスライドベース３１が摺動可能に取付
けられ、その上部に前後方向の倣いローラ３２
が、回転バイト２７と干渉することなくこれに近
接して取付けられている。スライドベース３１の
下部には、傾動ヘツド１８に対して上下方向の位
置決めがなされたスクリユロツド３３の上部が螺
合し、これを回転させることにより倣いローラ３
２の回転バイト２７に対する相対高さが調節でき
るようになつている。３４はスクリユロツド３３
のロツクナツトである。 The tilting head 18 also has a dovetail groove 3 on its front surface.
0, a slide base 31 is slidably attached to the slide base 31, and a front-back copying roller 32 is mounted on the top of the slide base 31.
is mounted close to the rotating tool 27 without interfering with it. The upper part of the screw rod 33, which is positioned vertically with respect to the tilting head 18, is screwed into the lower part of the slide base 31, and by rotating it, the copying roller 3
The relative height of the rotary tool 2 to the rotary cutting tool 27 can be adjusted. 34 is Screw Rod 33
It is a rock nut.
倣いローラ３２と溶接ビード１′および回転バ
イト２７との位置関係を第２図の背面図（同図
イ）および平面図（同図ロ）により今少し詳しく
説明すると、倣いローラ３２は溶接ビード１′を
跨ぐ形で左右一対設けられている。この場合、両
輪の離間距離をビード巾に近づけることにより、
溶接管１の栗形の影響をほとんど受けずに一定の
切込量を保つことができる。又、倣いローラ３２
を回転バイト２７に接触しない範囲で近づけるこ
とにより、溶接管１の管端の反り上りの影響を事
実上排除して切込量を一定に保つことができる。 The positional relationship between the copying roller 32, the welding bead 1', and the rotary cutting tool 27 will be explained in more detail with reference to the rear view (a) and plan view (b) of FIG. 2. There are a pair of left and right straddles. In this case, by making the distance between the two wheels closer to the bead width,
A constant depth of cut can be maintained almost unaffected by the chestnut shape of the welded pipe 1. Also, copying roller 32
By bringing the rotary cutting tool 27 close to the rotary cutting tool 27 without contacting the rotary cutting tool 27, the effect of warping of the end of the welded pipe 1 can be virtually eliminated and the depth of cut can be kept constant.
第１図に示した管内面ビード除去装置の動作を
次に説明する。 The operation of the tube inner surface bead removal device shown in FIG. 1 will be explained next.
装置を溶接管１の内部に挿入する前に、傾動ヘ
ツド１８の第２の移動ベース１４に対する傾斜角
θを決める。第３図イ，ロに示すように、この傾
斜角θを変えることによつてビード切削面の円弧
半径を調節できるので、溶接管１のビード部周辺
の内面円弧半径にビード切削面の円弧半径が一致
するよう、傾斜角θを決める。傾斜角θの調節
は、ロツクボルト２４を緩め、スクリユロツド２
１を回転させて傾斜角θを合わせた後、ロツクボ
ルト２４を締付けることにより行う。 Before inserting the device into the interior of the welded pipe 1, the inclination angle θ of the tilting head 18 with respect to the second moving base 14 is determined. As shown in Fig. 3 A and B, the arc radius of the bead cutting surface can be adjusted by changing this inclination angle θ, so that the inner arc radius around the bead portion of the welded pipe 1 is adjusted to the arc radius of the bead cutting surface. The inclination angle θ is determined so that they match. To adjust the inclination angle θ, loosen the lock bolt 24 and tighten the screw rod 2.
1 to match the inclination angle θ, and then tighten the lock bolt 24.
また、傾斜角θの調節と合わせて、倣いローラ
３２の位置決めを行う。倣いローラ３２の回転バ
イト２７に対する相対高さは、第２図から明らか
なように、溶接ビード１′への切込み深さを決定
するので、ビード切削面がその脇の母材部内面に
滑らかに連続する高さに、倣いローラ３２の位置
決めを行う。これには、ロツクナツト３４を緩
め、スクリユロツド３３を回転させてスライドベ
ース３１の高さを決めた後、ロツクナツト３４を
締めればよい。 In addition to adjusting the inclination angle θ, the copying roller 32 is positioned. As is clear from FIG. 2, the relative height of the copying roller 32 with respect to the rotating bit 27 determines the depth of cut into the weld bead 1', so that the bead cutting surface can be smoothly cut into the inner surface of the base material beside it. The copying roller 32 is positioned at continuous heights. To do this, loosen the lock nut 34, rotate the screw rod 33 to determine the height of the slide base 31, and then tighten the lock nut 34.
また、第１の移動ベース５はその後退限、第２
の移動ベース１４はその下限に位置させておく。 Moreover, the first moving base 5 is at its retreat limit, and the second movable base 5 is
The movable base 14 is positioned at its lower limit.
以上の準備が終ると、ブーム３を溶接管１の内
部に管軸に平行な姿勢で挿入する。挿入位置は第
１図ロに示すように回転バイト２７が溶接管１の
管端手前のタブ板１下方に位置する所である。 When the above preparations are completed, the boom 3 is inserted into the welded pipe 1 in a posture parallel to the pipe axis. The insertion position is where the rotating tool 27 is located below the tab plate 1 in front of the pipe end of the welded pipe 1, as shown in FIG.
ブーム３のクランプが終ると、モータ２９を駆
動して回転バイト２７を回転させながら、押圧手
段としてのシリンダー１６を駆動して第２の移動
ベース１４および傾動ヘツド１８を上昇させ、し
かる後、ブーム３前部のモータ７を駆動し、ナツ
ト１１を回転させることによりスクリユウ軸１２
を前進させて、これに連結される第１の移動ベー
ス５を前進させる。この一連の動作により回転バ
イト２７は、倣いローラ３２が溶接管１の内面に
接触するまで、すなわち所定の切込み深さに到達
するまでは、前進しながら溶接ビード１′に切込
んで行き、所定の切込み深さに達した後は倣いロ
ーラ３２の規制により溶接ビード１′両脇の母材
部内面に沿つて所定の切込み深さを維持しながら
溶接ビード１′を切削して行く。溶接ビード１′の
切削面は、準備作業のところで述べたように、溶
接ビード１′両脇の母材部内面に連続する弧状の
軸横断面形状を有し、軸縦断面形状も溶接管１の
管端の反りの有無に関係なく母材部内面に沿つた
ものとなる。 When the boom 3 is clamped, the motor 29 is driven to rotate the rotary tool 27 while the cylinder 16 as a pressing means is driven to raise the second movable base 14 and the tilting head 18, and then the boom By driving the motor 7 at the front of 3 and rotating the nut 11, the screw shaft 12
is advanced, and the first moving base 5 connected thereto is advanced. Through this series of operations, the rotating cutting tool 27 cuts into the weld bead 1' while moving forward until the copying roller 32 contacts the inner surface of the welded pipe 1, that is, until the predetermined depth of cut is reached. After reaching the depth of cut, the weld bead 1' is cut along the inner surface of the base material on both sides of the weld bead 1' while maintaining a predetermined depth of cut under the control of the copying roller 32. As mentioned in the preparation work, the cut surface of the weld bead 1' has an arcuate axial cross-sectional shape that is continuous with the inner surface of the base metal on both sides of the weld bead 1', and the axial longitudinal cross-sectional shape is also similar to that of the weld pipe 1. It follows the inner surface of the base material regardless of whether or not the tube end is warped.
必要な長さの切削が終ると、シリンダー１６の
駆動により第２の移動ベース１４および傾動ヘツ
ド１８をゆるやかに降下させながら、切削前進を
続け、溶接ビード１′の切削面を元の溶接ビード
１′の高さに一致させる。切削開始から切削終了
までの回転バイト２７の動作を第１図ロの上部に
矢示する。 Once the required length has been cut, the cylinder 16 is driven to gently lower the second movable base 14 and tilting head 18 while continuing the forward cutting process, returning the cut surface of the weld bead 1' to the original weld bead 1. ′ height. The operation of the rotating cutting tool 27 from the start of cutting to the end of cutting is indicated by an arrow at the top of FIG.
切削が完全に終了すると、第１の移動ヘツド５
は元の後退限まで戻つて次の切削に備える。ま
た、第２の移動ベース１４はその下限に戻り、回
転バイト２７も停止する。最後にブーム３が溶接
管１の外に抜き取られる。 When cutting is completely finished, the first moving head 5
returns to the original retraction limit and prepares for the next cutting. Further, the second movable base 14 returns to its lower limit, and the rotating cutting tool 27 also stops. Finally, the boom 3 is pulled out of the welded pipe 1.
第１の移動ベース５の移動は、その切削完了位
置（第１図ロ上部矢示Ｃ点）、前進限（第１図ロ
上部矢示Ｄ点）および後退限（第１図ロ矢示Ａ
点）に対応する位置にリミツトスイツチを設ける
ことによつて自動化でき、また、このリミツトス
イツチを第１の移動ベース５の移動路に沿つて位
置移動可能に設けることによつて、第１の移動ベ
ース５のストロークを変えることも可能である。 The movement of the first movable base 5 consists of its cutting completion position (point C, indicated by the upper arrow in FIG. 1 lo), forward limit (point D, indicated by the upper arrow in FIG. 1 lo), and backward limit (point A, indicated by the arrow in FIG. 1 lo).
Automation can be achieved by providing a limit switch at a position corresponding to point), and by providing the limit switch so as to be movable along the moving path of the first moving base 5. It is also possible to change the stroke.
第２の移動ベース１４についても、その下限位
置をリミツトスイツチで検知することにより自動
停止が可能である。第２の移動ベース１４の上限
は、倣いローラ３２を溶接管１の内面に弾発的に
当接させる関係上、必要でない。 The second movable base 14 can also be automatically stopped by detecting its lower limit position with a limit switch. The upper limit of the second movable base 14 is not necessary because the copying roller 32 is brought into elastic contact with the inner surface of the welded pipe 1.
また、第２の移動ベース１４駆動用のシリンダ
ー１６を高速、低速の二段動作とするとともに、
倣いローラ３２に近接して接触式あるいは非接触
式のビード近接検知機構を付設し、この機構がビ
ード近接を検知するまではシリンダー１６を高速
で上昇動作させ、ビード近接検知後は低速動作と
して、切削開始までに要する時間を短縮すること
も可能である。同様に下降時もビード近接検知中
は低速動作、ビード近接が検知されなくなつた時
点から高速動作とすることにより、下降時間の短
縮を図ることも可能である。 Further, the cylinder 16 for driving the second moving base 14 is operated in two stages of high speed and low speed,
A contact or non-contact type bead proximity detection mechanism is attached close to the copying roller 32, and the cylinder 16 is moved upward at high speed until the mechanism detects the proximity of the bead, and after detecting the proximity of the bead, the cylinder 16 is operated at a low speed. It is also possible to shorten the time required to start cutting. Similarly, when descending, it is possible to shorten the descending time by operating at a low speed while the bead proximity is being detected and then operating at a high speed from the time when the bead proximity is no longer detected.
第１の移動ベース５についても高速、低速の二
段動作とし、切削に直接関与しない後退動作等を
高速ですばやく行うことも可能である。 The first movable base 5 can also be operated in two stages, high speed and low speed, so that it is also possible to quickly perform a backward movement, etc. that is not directly involved in cutting, at high speed.
なお、第１図の装置では溶接管を上にした溶接
管１に対してビード切削を行つてその切粉を自然
落下排除させて、切粉巻込み切削等による切削面
損傷が生じる恐れがないようにしているが、本装
置を反転させることにより、溶接管を下にした溶
接管１に対してもビード切削を行うことができ
る。 In addition, in the apparatus shown in Fig. 1, bead cutting is performed on the welded pipe 1 with the welded pipe facing upward, and the chips are removed by falling naturally, so there is no risk of damage to the cut surface due to cutting involving chips, etc. However, by inverting this device, bead cutting can also be performed on the welded pipe 1 with the welded pipe facing down.
また、第１図の装置では、ストレートシーム溶
接を終えた大径管を対象とし、かつそのビード除
去部分を管端部に限るものとしているが、比較的
大径の電縫管も含めて管内面ビードを管の全長に
亘つて除去する場合にも本装置は適用可能であ
る。ただし、この場合は管の全長に見合うだけの
第１の移動ベースのストロークを確保するか、あ
るいは第１の移動ベースをブームに固定し、管を
軸方向に移動させる等の配慮が必要である。後者
の場合、ブームを溶接管にクランプする必要のな
いことは言うまでもない。 In addition, the device shown in Figure 1 targets large-diameter pipes that have undergone straight seam welding, and the bead removal portion is limited to the pipe ends; This device can also be applied to the case where surface beads are removed over the entire length of a pipe. However, in this case, consideration must be given to ensuring a stroke of the first moving base that is commensurate with the total length of the pipe, or fixing the first moving base to the boom and moving the pipe in the axial direction. . It goes without saying that in the latter case there is no need to clamp the boom to the welded pipe.
以上の説明から明らかなように、本発明の内面
溶接ビード除去装置は、切削工具として回転バイ
トを使用しているので、回転砥石よりも切削能
力が高く、ビード除去速度の向上を図ることがで
きる。工具寿命が長く、取替え頻度が低下し、
作業性、経済性が良い。回転砥石のように作用
面が減耗することがないので、ビードへの切込深
さの変更がない限り倣いローラ３２位置の再調整
が不必要であり、再調整の煩雑さから開放され
る。切削時に粉塵が生じず、振動も少ないの
で、周辺機器の機械的精度を低下させる危険が少
なく、特に本装置をタブ板除去装置と組合せる場
合は非常に有利である。回転砥石よりも切削能
力が優れるにもかかわらず小径であり、また第４
図イの装置のように切削工具を運動させる必要も
ないので、ビード脇の管母材部に切込む危険が少
ない。
As is clear from the above description, the internal weld bead removal device of the present invention uses a rotating bit as a cutting tool, so it has higher cutting ability than a rotating grindstone and can improve the bead removal speed. . Longer tool life, less frequent replacement,
Good workability and economy. Since the working surface does not wear out unlike a rotary grindstone, there is no need to readjust the position of the copying roller 32 unless the depth of cut into the bead is changed, and the trouble of readjustment is eliminated. Since no dust is generated during cutting and there is little vibration, there is little risk of degrading the mechanical precision of peripheral equipment, which is very advantageous, especially when this device is combined with a tab plate removal device. Although it has better cutting ability than a rotary whetstone, it has a smaller diameter, and
Unlike the device in Figure A, there is no need to move the cutting tool, so there is less risk of cutting into the tube base material next to the bead.
これに加えて本発明の装置では、回転バイトを
ブームに対して前傾又は後傾できるようにしてあ
るので、第４図イの装置のように切削工具に揺
動をさせることなくビード切削面を円弧に仕上げ
ることができる。しかも円弧面の曲率を回転バ
イトの傾斜角によつて調整できるので、ビード両
脇の管母材部内面に滑らかに連結した切削面を得
ることができる。更に小径で管母材部に切込む
危険が本来的に少ないこととあいまつて、第５図
イのような栗形が顕著な溶接管の場合にもビード
部とその近傍の肉厚管理を極めて厳重なものとす
ることができる。 In addition, in the device of the present invention, the rotary cutting tool can be tilted forward or backward relative to the boom, so the bead cutting surface can be cut without causing the cutting tool to swing as in the device shown in Fig. 4A. can be finished into an arc. Moreover, since the curvature of the circular arc surface can be adjusted by adjusting the inclination angle of the rotating cutting tool, it is possible to obtain a cutting surface that is smoothly connected to the inner surface of the tube base material on both sides of the bead. Furthermore, since the diameter is small and the risk of cutting into the pipe base material is inherently low, even in the case of welded pipes with a prominent chestnut shape as shown in Figure 5 A, it is necessary to extremely control the wall thickness at the bead and its vicinity. It can be made strict.
また、本発明のビード除去装置では回転バイト
の切込み深さをこれに近接した倣いローラによつ
て規制し、かつ倣いローラを溶接管内面に弾発的
に接触させるようにしてあるので、第５図ロの
ような管端の反り上りが顕著な溶接管に対しても
安定な切込み深さを確保でき、管周方向の肉厚管
理が厳重なこととあいまつてビード部全体の切削
精度を飛躍的に向上せしめ得る。 In addition, in the bead removing device of the present invention, the depth of cut of the rotary cutting tool is regulated by the copying roller adjacent to it, and the copying roller is brought into elastic contact with the inner surface of the welded pipe. It is possible to secure a stable depth of cut even for welded pipes with noticeable warping at the end of the pipe as shown in Figure 2. Combined with the strict control of wall thickness in the circumferential direction of the pipe, this greatly improves the cutting accuracy of the entire bead part. can be improved.
更にまた、本発明のビード除去装置では回転バ
イトと倣いローラの位置関係ならびに回転バイト
の傾斜角によつて安定なビード切削を可能にし、
レーザー光などの光学的測定手段を必要としない
ので、装置構成が簡単でメンテナンスが容易と
なり、更に耐久性、信頼性に優れるとともに、装
置コストも低い、リミツトスイツチ等の簡単な
センサーをもつて自動化を行える等、経済的に著
しく優れたものとなる。 Furthermore, the bead removal device of the present invention enables stable bead cutting due to the positional relationship between the rotating tool and the copying roller and the inclination angle of the rotating tool.
Since it does not require optical measurement means such as laser light, the device configuration is simple and maintenance is easy. Furthermore, it has excellent durability and reliability, and the device cost is low. It can be automated using simple sensors such as limit switches. This makes it extremely economical.
第１図イ，ロは本発明を実施した管内面溶接ビ
ード除去装置の一例についてその構造を示す横断
平面図（同図イ）および縦断側面図（同図ロ）、
第２図イ，ロは同装置における回転バイトと倣い
ローラとの位置関係を示す背面図（同図イ）およ
び平面図（同図ロ）、第３図イ，ロは回転バイト
の傾斜角とビード切削面の曲率との関係を示す背
面図、第４図イ，ロは従来の管内面溶接ビード除
去装置の切削工具の部分を模式的に示す斜視図、
第５図イ，ロは溶接管の形状を模式的に示す正面
図（同図イ）および側面図（同図ロ）である。
図中、１：溶接管、１′：管内面溶接ビード、
２：タブ板、３：ブーム、４：クランパー、５：
第１の移動ベース、７：モータ、１１：ナツト、
１２：スクリユウ軸、１４：第２の移動ベース、
１６：押圧手段（シリンダー）、１８：傾動ヘツ
ド、２６：チヤツク、２７：回転バイト、２９：
モータ、３１：スライドベース、３２：倣いロー
ラ。
Figures 1A and 1B are a cross-sectional plan view (A) and a vertical side view (B) showing the structure of an example of a tube inner weld bead removal device according to the present invention;
Figures 2A and 2B are a rear view (A) and a top view (B) showing the positional relationship between the rotating tool and the copying roller in the same device, and Figure 3A and 3B show the inclination angle of the rotating tool and the copying roller. FIGS. 4A and 4B are perspective views schematically showing the cutting tool portion of a conventional tube inner weld bead removal device;
5A and 5B are a front view (A) and a side view (B) schematically showing the shape of a welded pipe. In the figure, 1: welded pipe, 1': pipe inner weld bead,
2: Tab plate, 3: Boom, 4: Clamper, 5:
1st moving base, 7: motor, 11: nut,
12: Screw axis, 14: Second moving base,
16: Pressing means (cylinder), 18: Tilting head, 26: Chuck, 27: Rotating tool, 29:
Motor, 31: Slide base, 32: Copying roller.
Claims (1)
管１の内部にあつて前記内面溶接ビード１′に対
して相対平行移動する第１の移動ベース５と、こ
の第１の移動ベース５に前記内面溶接ビード１′
に対し押圧手段１６をもつて進退すべく取付けた
第２の移動ベース１４と、この第２の移動ベース
１４に前記第１の移動ベース５の移動方向に前傾
または後傾すべく取り付けた傾動ヘツド１８と、
この傾動ヘツド１８の傾斜角θ調整用スクリユロ
ツド２１と、上記傾動ヘツド１８に前記内面溶接
ビード１′に向けて取付けた回転バイト２７と、
この回転バイト２７に近接して前記傾動ヘツド１
８に取付けられ、回転バイト２７との相対突出長
さがスクリユロツド３３で調整でき、かつ固定で
きる倣いローラ３２とを備えることを特徴とする
管内面溶接ビート除去装置。1 a first movable base 5 which is located inside the welded pipe 1 from which the inner weld bead 1' is to be removed and moves in parallel relative to the inner weld bead 1'; Weld bead 1'
A second movable base 14 is attached to the second movable base 14 so as to move forward or backward with a pressing means 16, and a tilting base is attached to the second movable base 14 so as to tilt forward or backward in the moving direction of the first movable base 5. Head 18 and
A screw rod 21 for adjusting the inclination angle θ of the tilting head 18, a rotating tool 27 attached to the tilting head 18 facing the inner weld bead 1',
The tilting head 1 is located close to the rotating tool 27.
8, a copying roller 32 whose relative protrusion length with respect to a rotary bite 27 can be adjusted with a screw rod 33, and can be fixed.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29696885A JPS62157711A (en) | 1985-12-27 | 1985-12-27 | Tube internal weld bead removing device |
| CA000526214A CA1332276C (en) | 1985-12-27 | 1986-12-23 | Apparatus for treating ends of large-diameter welded pipe |
| EP86310122A EP0228905B1 (en) | 1985-12-27 | 1986-12-23 | Apparatus for treating ends of largediameter welded pipe |
| US06/945,960 US4729502A (en) | 1985-12-27 | 1986-12-24 | Apparatus for treating ends of large-diameter welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29696885A JPS62157711A (en) | 1985-12-27 | 1985-12-27 | Tube internal weld bead removing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62157711A JPS62157711A (en) | 1987-07-13 |
| JPH0466643B2 true JPH0466643B2 (en) | 1992-10-23 |
Family
ID=17840529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29696885A Granted JPS62157711A (en) | 1985-12-27 | 1985-12-27 | Tube internal weld bead removing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62157711A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7677846B2 (en) * | 2005-10-31 | 2010-03-16 | Tri Tool Inc. | Method and apparatus for weld profiling |
| DE102007003786A1 (en) * | 2006-02-07 | 2007-08-09 | Theodor Gräbener GmbH & Co. KG | Method and plant for processing the inner longitudinal seam of longitudinally welded components, such as pipes, containers, boilers o. |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52111089A (en) * | 1976-03-12 | 1977-09-17 | Chiyoujirou Kabetani | Method of and device for grinding to remove cracks in inner surface portion of drawn steel pipe |
| JPS5487996A (en) * | 1977-12-26 | 1979-07-12 | Hitachi Ltd | Automatic grinding device for inner diameter surface |
-
1985
- 1985-12-27 JP JP29696885A patent/JPS62157711A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52111089A (en) * | 1976-03-12 | 1977-09-17 | Chiyoujirou Kabetani | Method of and device for grinding to remove cracks in inner surface portion of drawn steel pipe |
| JPS5487996A (en) * | 1977-12-26 | 1979-07-12 | Hitachi Ltd | Automatic grinding device for inner diameter surface |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62157711A (en) | 1987-07-13 |
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