JP2020124782A - Welding bead removal device and bead cutter holder of the same - Google Patents

Welding bead removal device and bead cutter holder of the same Download PDF

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Publication number
JP2020124782A
JP2020124782A JP2019019104A JP2019019104A JP2020124782A JP 2020124782 A JP2020124782 A JP 2020124782A JP 2019019104 A JP2019019104 A JP 2019019104A JP 2019019104 A JP2019019104 A JP 2019019104A JP 2020124782 A JP2020124782 A JP 2020124782A
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cutting
bead
guide member
holder
cutting waste
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晃浩 渡邊
Akihiro Watanabe
晃浩 渡邊
健一 山中
Kenichi Yamanaka
健一 山中
政彦 川村
Masahiko Kawamura
政彦 川村
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Nippon Steel Nisshin Co Ltd
Nippon Steel Coated Steel Pipe Co Ltd
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Nippon Steel Nisshin Co Ltd
Nippon Steel Coated Steel Pipe Co Ltd
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Priority to JP2019019104A priority Critical patent/JP2020124782A/en
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Abstract

To provide a welding bead removal device which can inhibit deterioration of the appearance in a cutting position of an outer surface welding bead.SOLUTION: A welding bead removal device according to the invention is used to cut and remove an outer surface welding bead 1a on a welded metal pipe 1 and includes: a bead cutter 2 which cuts the outer surface welding bead 1a; and a chip receiving plate 4 which receives a tip of a chip 1c generated by the bead cutter 2 cutting the outer surface welding bead 1a to break the chip 1c. The chip 1c extends drawing an arm from a cut position where the outer surface welding bead 1a is cut by the bead cutter 2. The chip receiving plate 4 is disposed so as to receive the tip of the chip 1c at a position beyond a peak 1d of the arc.SELECTED DRAWING: Figure 1

Description

本発明は、溶接金属管の外面溶接ビードを切削して除去するための溶接ビード除去装置及びそのビードカッタホルダに関する。 TECHNICAL FIELD The present invention relates to a weld bead removing device for cutting and removing an outer weld bead of a welded metal pipe, and a bead cutter holder thereof.

一般に、溶接金属管は、平板状の金属板を湾曲させて断面Ｃ字状のオープンパイプを形成した後に、そのオープンパイプの端部を互いに突き合せて溶接することで製造される。オープンパイプの端部を溶接した時、溶接金属管の外周面には外面溶接ビードが形成される。外面溶接ビードは、溶接金属管の外観を損なうとともに、溶接金属管の加工に支障を来す原因となる。このため、オープンパイプの端部を溶接した直後に、バイト等のビードカッタにより外面溶接ビードを切削して除去することが行われている。 In general, a welded metal pipe is manufactured by bending a flat metal plate to form an open pipe having a C-shaped cross section, and then welding the ends of the open pipe by abutting each other. When the ends of the open pipe are welded, outer weld beads are formed on the outer peripheral surface of the welded metal pipe. The outer surface weld bead impairs the appearance of the welded metal pipe and causes a trouble in the processing of the welded metal pipe. Therefore, immediately after welding the end portion of the open pipe, the outer surface weld bead is cut and removed by a bead cutter such as a cutting tool.

外面溶接ビードの切削により生じる切削屑が無制限に延びると、切削屑が溶接金属管とロールとの間に巻き込まれる等の不具合が生じる虞がある。例えば下記の特許文献１等では、外面溶接ビードの切削位置の直上に切削屑受けプレートを配置し、切削屑の先端を切削屑受けプレートに受けさせることで、切削屑を破断させることが提案されている。 If the cutting debris generated by the cutting of the outer surface welding bead extends indefinitely, there is a risk that the cutting debris may be caught between the weld metal pipe and the roll. For example, in the following Patent Document 1 and the like, it is proposed that the cutting waste receiving plate is arranged immediately above the cutting position of the outer surface welding bead and the tip of the cutting waste is received by the cutting waste receiving plate to break the cutting waste. ing.

実公昭５１−５８４８６号公報Japanese Utility Model Publication No. 51-58486

上記のような従来構成では、外面溶接ビードの切削位置の直上に切削屑受けプレートを配置しているので、切削屑が破断した際の衝撃が溶接金属管に伝わり、外面溶接ビードの切削位置における外観が悪化してしまう。具体的には、外面溶接ビードの切削位置において管の軸方向に間隔をおいてキズが生じてしまう。 In the conventional configuration as described above, since the cutting debris receiving plate is arranged immediately above the cutting position of the outer surface welding bead, the impact when the cutting debris is broken is transmitted to the weld metal pipe, and the cutting position of the outer surface welding bead is The appearance deteriorates. Specifically, at the cutting position of the outer surface welding bead, scratches are generated at intervals in the axial direction of the pipe.

本発明は、上記のような課題を解決するためになされたものであり、その目的は、外面溶接ビードの切削位置における外観悪化を抑えることができる溶接ビード除去装置を提供することである。 The present invention has been made to solve the above problems, and an object of the present invention is to provide a weld bead removing device capable of suppressing deterioration of the appearance of the outer surface weld bead at the cutting position.

本発明に係る溶接ビード除去装置は、溶接金属管の外面溶接ビードを切削して除去するための溶接ビード除去装置であって、外面溶接ビードを切削するビードカッタと、ビードカッタが外面溶接ビードを切削することにより生じる切削屑の先端を受けて、切削屑を破断させる切削屑受けプレートとを備え、切削屑は、ビードカッタによる外面溶接ビードの切削位置から弧を描いて延び、切削屑受けプレートは、弧のピークを越えた位置で切削屑の先端を受けるように配置されている。 The welding bead removing device according to the present invention is a welding bead removing device for cutting and removing the outer surface welding bead of the welded metal pipe, and the bead cutter for cutting the outer surface welding bead and the bead cutter cutting the outer surface welding bead. The cutting scrap receiving plate that receives the tip of the cutting scraps caused by this and breaks the cutting scraps, the cutting scraps extend in an arc from the cutting position of the outer weld bead by the bead cutter, and the cutting scrap receiving plate is the arc. It is arranged to receive the tip of cutting chips at a position beyond the peak of.

本発明の溶接ビード除去装置によれば、切削屑受けプレートは、弧のピークを越えた位置で切削屑の先端を受けるように配置されているので、切削屑が破断した際に溶接金属管に伝わる衝撃を少なくできる。これにより、外面溶接ビードの切削位置における外観悪化を抑えることができる。 According to the weld bead removing device of the present invention, the cutting debris receiving plate is arranged to receive the tip of the cutting debris at a position beyond the peak of the arc. The shock transmitted can be reduced. As a result, it is possible to suppress the deterioration of the appearance of the outer welding beads at the cutting position.

本発明の実施の形態による溶接ビード除去装置を示す側面図である。It is a side view which shows the welding bead removal apparatus by embodiment of this invention. 図１の溶接ビード除去装置を示す平面図である。It is a top view which shows the welding bead removal apparatus of FIG. 図１のホルダ及び案内部材をより具体的に示す正面図である。It is a front view which shows the holder and guide member of FIG. 1 more concretely. 図３のホルダ及び案内部材を示す側面図である。It is a side view which shows the holder and guide member of FIG. 図３のホルダ及び案内部材の第１変形例を示す正面図である。It is a front view which shows the 1st modification of the holder and guide member of FIG. 図５のホルダ及び案内部材を示す側面図である。It is a side view which shows the holder and guide member of FIG. 図３のホルダ及び案内部材の第２変形例を示す側面図である。It is a side view which shows the 2nd modification of the holder and guide member of FIG. 切削屑受けプレートによる切削屑の破断プロセスを示す説明図である。It is explanatory drawing which shows the fracture|rupture process of the cutting waste by a cutting waste receiving plate.

以下、本発明を実施するための形態について、図面を参照して説明する。本発明は各実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、各実施形態に開示されている複数の構成要素の適宜な組み合わせにより、種々の発明を形成できる。例えば、実施の形態に示される全構成要素からいくつかの構成要素を削除してもよい。さらに、異なる実施形態の構成要素を適宜組み合わせてもよい。 Hereinafter, modes for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to each embodiment, and constituent elements can be modified and embodied without departing from the scope of the invention. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in each embodiment. For example, some constituent elements may be deleted from all the constituent elements described in the embodiments. Furthermore, the constituent elements of different embodiments may be combined appropriately.

図１は本発明の実施の形態による溶接ビード除去装置を示す側面図であり、図２は図１の溶接ビード除去装置を示す平面図である。図１及び図２に示す溶接ビード除去装置は、溶接金属管１の外面溶接ビード１ａを切削して除去するための装置である。 1 is a side view showing a welding bead removing device according to an embodiment of the present invention, and FIG. 2 is a plan view showing the welding bead removing device of FIG. The weld bead removing device shown in FIGS. 1 and 2 is a device for cutting and removing the outer weld bead 1 a of the weld metal pipe 1.

溶接金属管１は、ライン方向１ｂに流される平板状の素材金属板を徐々に湾曲させて断面Ｃ字状のオープンパイプを形成した後に、そのオープンパイプの端部を互いに突き合せて溶接することで連続的に製造することができる。オープンパイプの端部の溶接には、例えば高周波加熱溶接、レーザ溶接及びＴＩＧ溶接等の溶接方法が用いることができる。金属板としては、普通鋼板、ステンレス鋼板、高張力鋼板若しくは特殊鋼板又は銅板等の他の金属板を用いることができる。外面溶接ビード１ａは、オープンパイプの外周面の溶融金属又はオープンパイプの端部から外周面に押し出された溶融金属が固まることにより溶接金属管１の外周面に形成される。 The welded metal pipe 1 is formed by gradually curving a flat plate-shaped raw metal plate that is flowed in the line direction 1b to form an open pipe having a C-shaped cross section, and then welding the ends of the open pipes by butting each other. Can be manufactured continuously. Welding methods such as high-frequency heating welding, laser welding, and TIG welding can be used for welding the end portion of the open pipe. As the metal plate, other metal plates such as ordinary steel plate, stainless steel plate, high-tensile steel plate or special steel plate, or copper plate can be used. The outer surface welding bead 1a is formed on the outer peripheral surface of the welded metal pipe 1 by solidifying the molten metal on the outer peripheral surface of the open pipe or the molten metal extruded from the end of the open pipe to the outer peripheral surface.

本実施の形態の溶接ビード除去装置は、ビードカッタ２、ホルダ３、切削屑受けプレート４及び案内部材５を有している。 The weld bead removing device of the present embodiment has a bead cutter 2, a holder 3, a cutting waste receiving plate 4 and a guide member 5.

ビードカッタ２は、外面溶接ビード１ａを切削するための刃物である。ビードカッタ２は、そのビードカッタ２の先端が溶接金属管１の外周面に当接するように配置されている。ビードカッタ２が外面溶接ビード１ａを切削することにより切削屑１ｃが生じる。切削屑１ｃは、薄い金属帯のようなものであり、ビードカッタ２による外面溶接ビード１ａの切削位置から弧（曲線）を描いて延びる。また、切削屑１ｃは、外面溶接ビード１ａの切削位置からライン方向１ｂに係る上流側に向かって延びる。ビードカッタ２には、切削屑１ｃが接触される端面２ａが設けられている。端面２ａは、平面状とすることができる。また、端面２ａは、溶接金属管１の径方向と平行に延在されるか、又は端面２ａの上部が下部よりも下流側に位置するように傾斜されて延在されることが好ましい。このように端面２ａを延在させることにより、切削屑１ｃの排出をより確実に連続的にすることができる。 The bead cutter 2 is a blade for cutting the outer surface welding bead 1a. The bead cutter 2 is arranged so that the tip of the bead cutter 2 contacts the outer peripheral surface of the welded metal pipe 1. Cutting waste 1c is generated by the bead cutter 2 cutting the outer surface welding bead 1a. The cutting debris 1c is like a thin metal band, and extends in an arc (curve) from the cutting position of the outer surface welding bead 1a by the bead cutter 2. Further, the cutting waste 1c extends from the cutting position of the outer surface welding bead 1a toward the upstream side in the line direction 1b. The bead cutter 2 is provided with an end surface 2a with which the cutting chips 1c come into contact. The end surface 2a can be planar. Moreover, it is preferable that the end surface 2a extends parallel to the radial direction of the weld metal pipe 1, or is inclined and extends such that the upper portion of the end surface 2a is located on the downstream side of the lower portion. By extending the end surface 2a in this manner, it is possible to more reliably and continuously discharge the cutting chips 1c.

ホルダ３は、ビードカッタ２を保持するための部材である。本実施の形態のホルダ３は、ビードカッタ２が取り付けられたホルダ本体３０と、ホルダ本体３０と他の構造体との間に介在されてホルダ本体３０を支持する支持体３１とを含んでいる。 The holder 3 is a member for holding the bead cutter 2. The holder 3 of the present embodiment includes a holder body 30 to which the bead cutter 2 is attached, and a support body 31 that is interposed between the holder body 30 and another structure to support the holder body 30.

切削屑受けプレート４は、切削屑１ｃの先端を受けて、切削屑１ｃを破断させるための板状部材である。切削屑受けプレート４は、外面溶接ビード１ａの切削位置から切削屑１ｃが延びる方向に離れた位置に配置されており、切削屑１ｃの延びを阻害するように配置されている。切削屑受けプレート４で破断された切削屑１ｃの先端部分は、切削屑受けプレート４上に溜められる。切削屑受けプレート４が水平に対して傾斜して延在されて、切削屑受けプレート４の傾斜に沿って溶接金属管１の側方に切削屑１ｃが落とされてもよい。 The cutting waste receiving plate 4 is a plate-shaped member for receiving the tip of the cutting waste 1c and breaking the cutting waste 1c. The cutting debris receiving plate 4 is arranged at a position away from the cutting position of the outer surface welding bead 1a in the direction in which the cutting debris 1c extends, and is arranged so as to hinder the extension of the cutting debris 1c. The tip portion of the cutting waste 1c broken by the cutting waste receiving plate 4 is accumulated on the cutting waste receiving plate 4. The cutting debris receiving plate 4 may extend obliquely with respect to the horizontal, and the cutting debris 1c may be dropped to the side of the weld metal pipe 1 along the inclination of the cutting debris receiving plate 4.

ここで、溶接金属管１は、外周面に亜鉛系めっき層を有する亜鉛系めっき金属管であり得る。すなわち、切削屑１ｃには亜鉛系めっき金属が含まれ得る。亜鉛系めっき金属を含む切削屑１ｃは、外力を加えなければ長く延び、かつ外力を加えると比較的容易に破断するとの性質を有する。このような切削屑１ｃを無制限に延ばすと、切削屑１ｃが溶接金属管１とその溶接金属管１を搬送又は形成するロールとの間に巻き込まれる等の不具合が生じる虞がある。また、このような切削屑１ｃは、筒状のドラムの外周に巻き取ることも難しい。切削屑受けプレート４により切削屑１ｃを破断させることにより、切削屑１ｃの無制限な延びを回避しつつ、切削屑１ｃを容易に回収できるようにすることができる。 Here, the welded metal tube 1 may be a zinc-based plated metal tube having a zinc-based plated layer on the outer peripheral surface. That is, the cutting waste 1c may contain zinc-based plated metal. The cutting waste 1c containing the zinc-based plated metal has a property that it extends long if no external force is applied and breaks relatively easily when an external force is applied. If such cutting waste 1c is extended without limitation, there is a risk that the cutting waste 1c may be caught between the weld metal pipe 1 and the roll that conveys or forms the weld metal pipe 1, or the like. Further, it is difficult to wind such cutting waste 1c around the outer circumference of the cylindrical drum. By breaking the cutting waste 1c by the cutting waste receiving plate 4, it is possible to easily collect the cutting waste 1c while avoiding unlimited extension of the cutting waste 1c.

本実施の形態の切削屑受けプレート４は、切削屑１ｃが描く弧のピーク１ｄ（変曲点）を越えた位置で切削屑１ｃの先端を受けるように配置されている。本実施の形態の切削屑受けプレート４は、外面溶接ビード１ａの切削位置からライン方向１ｂに係る上流側に配置されるとともに、鉛直方向に係る上面で切削屑１ｃの先端を下方から受けるように配置されている。切削屑受けプレート４が弧のピーク１ｄを越えた位置で切削屑１ｃの先端を受けることにより、切削屑１ｃが破断した際の衝撃がピーク１ｄで逃がされる。これにより、切削屑１ｃが破断した際に溶接金属管に伝わる衝撃を少なくでき、外面溶接ビード１ａの切削位置における外観悪化を抑えることができる。 The cutting waste receiving plate 4 of the present embodiment is arranged to receive the tip of the cutting waste 1c at a position beyond the peak 1d (inflection point) of the arc drawn by the cutting waste 1c. The cutting debris receiving plate 4 of the present embodiment is arranged upstream from the cutting position of the outer surface welding bead 1a in the line direction 1b, and receives the tip of the cutting debris 1c from below at the upper surface in the vertical direction. It is arranged. By receiving the tip of the cutting waste 1c at a position where the cutting waste receiving plate 4 exceeds the peak 1d of the arc, the impact when the cutting waste 1c breaks is released at the peak 1d. As a result, the impact transmitted to the weld metal pipe when the cutting waste 1c is broken can be reduced, and the deterioration of the appearance of the outer surface welding bead 1a at the cutting position can be suppressed.

案内部材５は、切削屑１ｃと接触して切削屑１ｃを案内するための部材である。案内部材５が切削屑１ｃを案内することにより、切削屑１ｃの先端が向かう方向の変動を抑えることができ、面積が小さい切削屑受けプレート４を用いても、その切削屑受けプレート４によって切削屑１ｃの先端をより確実に受けることができる。但し、切削屑１ｃの先端が向かう方向が変動しても、大きな切削屑受けプレート４を用いれば、その切削屑受けプレート４によって切削屑１ｃの先端を受けることができる。すなわち、案内部材５は省略されていてもよい。 The guide member 5 is a member for contacting the cutting chips 1c and guiding the cutting chips 1c. By guiding the cutting waste 1c by the guide member 5, it is possible to suppress the variation in the direction in which the tip of the cutting waste 1c is directed, and even if the cutting waste receiving plate 4 having a small area is used, cutting is performed by the cutting waste receiving plate 4. The tip of the scrap 1c can be received more reliably. However, even if the direction in which the tip of the cutting waste 1c moves changes, if the large cutting waste receiving plate 4 is used, the tip of the cutting waste 1c can be received by the cutting waste receiving plate 4. That is, the guide member 5 may be omitted.

本実施の形態の案内部材５の切削屑１ｃと接触される部分は、突状の曲面によって構成されている。本実施の形態の案内部材５は円柱状又は円管状の部材によって構成されている。案内部材５の切削屑１ｃと接触される部分が突状の曲面によって構成されることにより、弧を描く切削屑１ｃとの接触領域を小さくすることができ、めっき金属等の切削屑１ｃからの不要物が案内部材５に付着する虞を低減できる。但し、案内部材５の切削屑１ｃと接触される部分が凹状の曲面であってもよい。凹状の曲面であっても、切削屑１ｃの案内を行うことができるためである。 The portion of the guide member 5 of the present embodiment that comes into contact with the cutting waste 1c is formed by a protruding curved surface. The guide member 5 of the present embodiment is composed of a columnar or tubular member. Since the portion of the guide member 5 that is in contact with the cutting waste 1c is formed of a projecting curved surface, the contact area with the cutting waste 1c that draws an arc can be reduced, and the cutting scrap 1c such as plated metal can be removed. It is possible to reduce the risk of unwanted substances adhering to the guide member 5. However, the part of the guide member 5 that contacts the cutting waste 1c may be a concave curved surface. This is because the cutting chips 1c can be guided even with a concave curved surface.

本実施の形態の案内部材５は、ビードカッタ２の直上に位置するようにホルダ３に保持されている。ビードカッタ２の直上とは、鉛直方向に沿って案内部材５を見た時に、案内部材５がビードカッタ２と重なる位置と理解することができる。案内部材５がビードカッタ２の直上に位置することで、切削屑１ｃを案内部材５によってより早期に案内することができ、切削屑１ｃの先端が向かう方向の変動をより確実に抑えることができる。また、案内部材５を保持するためだけの部材を設ける必要性を無くすことができる。案内部材５は、鉛直方向に沿って案内部材５を見た時に、案内部材５がビードカッタ２の全体を覆い隠すように設けられていることが好ましい。案内部材５がビードカッタ２の全体を覆い隠すことにより、切削屑１ｃを案内部材５により確実に接触させることができる。但し、案内部材５による切削屑１ｃの案内を行うことができれば、案内部材５が切削位置の直上よりもライン方向１ｂに係る上流側に配置されていてもよい。また、ホルダ３とは別に、案内部材５を保持する構成を設けてもよい。なお、ビードカッタ２の交換作業を考慮し、ライン方向１ｂに沿って案内部材５を見た際にビードカッタ２に重ならない高さ位置に案内部材５を配置することが好ましい。また、可能な限りビードカッタ２の近くに案内部材５を配置されることが好ましい。さらに、ビードカッタ２の先端（刃先）と平行に案内部材５を配置することが好ましい。 The guide member 5 of the present embodiment is held by the holder 3 so as to be located directly above the bead cutter 2. Immediately above the bead cutter 2 can be understood as a position where the guide member 5 overlaps the bead cutter 2 when the guide member 5 is viewed along the vertical direction. Since the guide member 5 is located directly above the bead cutter 2, the cutting waste 1c can be guided earlier by the guide member 5, and fluctuations in the direction in which the tip of the cutting waste 1c is directed can be suppressed more reliably. Further, it is possible to eliminate the need to provide a member only for holding the guide member 5. The guide member 5 is preferably provided so as to cover the entire bead cutter 2 when the guide member 5 is viewed along the vertical direction. Since the guide member 5 covers the entire bead cutter 2, the cutting waste 1c can be more reliably brought into contact with the guide member 5. However, if the guide member 5 can guide the cutting waste 1c, the guide member 5 may be arranged on the upstream side in the line direction 1b from immediately above the cutting position. In addition to the holder 3, a structure for holding the guide member 5 may be provided. In consideration of the replacement work of the bead cutter 2, it is preferable to arrange the guide member 5 at a height position that does not overlap the bead cutter 2 when the guide member 5 is viewed along the line direction 1b. Further, it is preferable to dispose the guide member 5 as close to the bead cutter 2 as possible. Further, it is preferable to dispose the guide member 5 parallel to the tip (blade edge) of the bead cutter 2.

次に、図３は図１のホルダ３及び案内部材５をより具体的に示す正面図であり、図４は図３のホルダ３及び案内部材５を示す側面図である。図３及び図４では、案内部材５が円柱状の金属棒により構成された態様を示している。案内部材５は、ホルダ３に溶接されている。案内部材５をホルダ３に強固に固定でき、案内部材５による切削屑１ｃの案内性を向上できる。また、安価な材料により案内部材５を実現できる。 Next, FIG. 3 is a front view more specifically showing the holder 3 and the guide member 5 in FIG. 1, and FIG. 4 is a side view showing the holder 3 and the guide member 5 in FIG. 3 and 4 show a mode in which the guide member 5 is composed of a cylindrical metal rod. The guide member 5 is welded to the holder 3. The guide member 5 can be firmly fixed to the holder 3, and the guideability of the cutting waste 1c by the guide member 5 can be improved. Further, the guide member 5 can be realized with an inexpensive material.

次に、図５は図３のホルダ３及び案内部材５の第１変形例を示す正面図であり、図６は図５のホルダ３及び案内部材５を示す側面図である。図５及び図６では、案内部材５がボルトにより構成された態様を示している。案内部材５の先端側の外周面にはねじ部５ａが設けられている。ホルダ３には、案内部材５が通される挿通孔を有する一対の支持壁３２が設けられている。図示はしないが、挿通孔の内周面にはねじが切られている。この変形例では、案内部材５はホルダ３に螺着されている。案内部材５を容易に交換することができ、案内部材５の摩耗によって切削屑１ｃの案内が不安定になることを回避することができる。また、安価な材料により案内部材５を実現できる。 Next, FIG. 5 is a front view showing a first modified example of the holder 3 and the guide member 5 in FIG. 3, and FIG. 6 is a side view showing the holder 3 and the guide member 5 in FIG. 5 and 6 show a mode in which the guide member 5 is composed of bolts. A threaded portion 5a is provided on the outer peripheral surface of the guide member 5 on the distal end side. The holder 3 is provided with a pair of support walls 32 having insertion holes through which the guide member 5 is inserted. Although not shown, the inner peripheral surface of the insertion hole is threaded. In this modification, the guide member 5 is screwed to the holder 3. The guide member 5 can be easily replaced, and the guide of the cutting waste 1c can be prevented from becoming unstable due to wear of the guide member 5. Further, the guide member 5 can be realized with an inexpensive material.

次に、図７は図３のホルダ３及び案内部材５の第２変形例を示す側面図である。図７に示す第２変形例のホルダ３は、ホルダ本体３０及び支持体３１に加えて、ホルダ本体３０に着脱可能な分割体３３を有している。分割体３３は、ボルト等の締結部材３４によりホルダ本体３０に着脱可能に取り付けられている。ホルダ本体３０及び分割体３３には、案内部材５の外形に適合した凹部が設けられている。案内部材５は、ホルダ本体３０及び分割体３３の凹部に嵌るようにホルダ本体３０及び分割体３３間に配置される。また、案内部材５は、分割体３３がホルダ本体３０に取り付けられた際にホルダ本体３０及び分割体３３によって挟持される。このような態様でも、案内部材５を容易に交換することができ、案内部材５の摩耗によって切削屑１ｃの案内が不安定になることを回避することができる。 Next, FIG. 7 is a side view showing a second modified example of the holder 3 and the guide member 5 of FIG. The holder 3 of the second modified example shown in FIG. 7 has, in addition to the holder body 30 and the support body 31, a split body 33 that is attachable to and detachable from the holder body 30. The split body 33 is detachably attached to the holder body 30 by a fastening member 34 such as a bolt. The holder body 30 and the divided body 33 are provided with recesses that match the outer shape of the guide member 5. The guide member 5 is arranged between the holder body 30 and the split body 33 so as to fit into the recesses of the holder body 30 and the split body 33. The guide member 5 is sandwiched between the holder body 30 and the divided body 33 when the divided body 33 is attached to the holder body 30. Even in such a mode, the guide member 5 can be easily replaced, and it is possible to prevent the guide of the cutting waste 1c from becoming unstable due to wear of the guide member 5.

なお、案内部材５の素材は任意である。切削屑１ｃとの接触に耐えられるよう、切削屑１ｃよりも硬度が高い素材が好ましい。案内部材５の素材として、例えばＳＣＭ４２０鋼、ＳＫＤ１１鋼又はセラミックス等を用いることができる。 The material of the guide member 5 is arbitrary. A material having a hardness higher than that of the cutting waste 1c is preferable so as to withstand contact with the cutting waste 1c. As a material of the guide member 5, for example, SCM420 steel, SKD11 steel, ceramics or the like can be used.

次に、図８は切削屑受けプレート４による切削屑１ｃの破断プロセスを示す説明図である。図８の（ａ）に示すように、ビードカッタ２により外面溶接ビード１ａが切削されると、切削屑１ｃがビードカッタ２の端面に沿って上方に向かうとともに案内部材５に接触される。この案内部材５との接触により、案内部材５が無い場合と比較して小さな曲率半径の弧を描くように切削屑１ｃがライン方向１ｂに係る上流側に向かう。 Next, FIG. 8 is an explanatory view showing a fracture process of the cutting waste 1c by the cutting waste receiving plate 4. As shown in (a) of FIG. 8, when the bead cutter 2 cuts the outer weld bead 1 a, the cutting waste 1 c moves upward along the end face of the bead cutter 2 and comes into contact with the guide member 5. Due to the contact with the guide member 5, the cutting chips 1c move toward the upstream side in the line direction 1b so as to draw an arc having a smaller radius of curvature than in the case without the guide member 5.

図８の（ｂ）に示すように、切削屑１ｃの先端が切削屑受けプレート４に到達した後、外面溶接ビード１ａの進行に伴い切削屑１ｃが描く弧の曲率が徐々に大きくなっていく。図８の（ｂ）では、二点鎖線及び実線により切削屑１ｃが描く弧の曲率が大きくなっている状況を表している。 As shown in FIG. 8B, after the tip of the cutting waste 1c reaches the cutting waste receiving plate 4, the curvature of the arc drawn by the cutting waste 1c gradually increases as the outer surface welding bead 1a advances. .. In (b) of FIG. 8, a two-dot chain line and a solid line represent a situation where the curvature of the arc drawn by the cutting waste 1c is large.

図８の（ｃ）に示すように、切削屑１ｃが描く弧の曲率が所定の大きさになると、弧のピーク１ｄ又はその近傍で切削屑１ｃが破断する。以降、同様の現象が繰り返される。図８の（ｄ）に示すように、案内部材５を設けた場合でも、切削屑１ｃの先端が切削屑受けプレート４に到達する位置は多少変動する。このため、切削屑受けプレート４がライン方向１ｂにある程度の長さを有し、切削屑１ｃの先端を切削屑受けプレート４で受けられるようにすることが好ましい。例えば、ライン方向１ｂに係る切削屑受けプレート４の長さを１００ｍｍ程度（例えば９０〜１１０ｍｍ）とすることができる。 As shown in FIG. 8C, when the curvature of the arc drawn by the cutting waste 1c reaches a predetermined value, the cutting waste 1c breaks at or near the peak 1d of the arc. After that, the same phenomenon is repeated. As shown in (d) of FIG. 8, even when the guide member 5 is provided, the position at which the tip of the cutting waste 1c reaches the cutting waste receiving plate 4 slightly changes. Therefore, it is preferable that the cutting waste receiving plate 4 has a certain length in the line direction 1b so that the tip of the cutting waste 1c can be received by the cutting waste receiving plate 4. For example, the length of the cutting waste receiving plate 4 in the line direction 1b can be about 100 mm (for example, 90 to 110 mm).

このような溶接ビード除去装置では、切削屑受けプレート４が弧のピーク１ｄを越えた位置で切削屑１ｃの先端を受けるように配置されているので、切削屑１ｃが破断した際に溶接金属管１に伝わる衝撃を少なくできる。これにより、外面溶接ビード１ａの切削位置における外観悪化を抑えることができる。この構成は、切削屑受けプレート４による切削屑１ｃの破断が好適な亜鉛系めっき金属の製造に特に有用である。 In such a weld bead removing device, the cutting scrap receiving plate 4 is arranged so as to receive the tip of the cutting scrap 1c at a position beyond the peak 1d of the arc. The impact transmitted to 1 can be reduced. As a result, it is possible to suppress the deterioration of the appearance of the outer surface welding bead 1a at the cutting position. This configuration is particularly useful for manufacturing a zinc-based plated metal in which the cutting waste 1c is preferably broken by the cutting waste receiving plate 4.

また、案内部材５が切削屑１ｃと接触して切削屑１ｃを案内するので、切削屑１ｃの先端が向かう方向の変動を抑えることができ、面積が小さい切削屑受けプレート４を用いても、その切削屑受けプレート４によって切削屑１ｃの先端をより確実に受けることができる。 Further, since the guide member 5 contacts the cutting waste 1c and guides the cutting waste 1c, it is possible to suppress the variation in the direction in which the tip of the cutting waste 1c is directed, and even if the cutting waste receiving plate 4 having a small area is used, The cutting waste receiving plate 4 can more reliably receive the tip of the cutting waste 1c.

また、案内部材５の切削屑１ｃと接触される部分が突状の曲面であるので、弧を描く切削屑１ｃとの接触領域を小さくすることができ、めっき金属等の切削屑１ｃからの不要物が案内部材５に付着する虞を低減できる。 In addition, since the portion of the guide member 5 that is in contact with the cutting waste 1c is a protruding curved surface, the contact area with the cutting waste 1c that draws an arc can be made small and unnecessary from the cutting waste 1c such as plated metal. It is possible to reduce the risk that an object will adhere to the guide member 5.

また、外面溶接ビード１ａの切削位置の直上に位置するように案内部材５がホルダ３に保持されているので、切削屑１ｃを案内部材５によってより早期に案内することができ、切削屑１ｃの先端が向かう方向の変動をより確実に抑えることができる。 Further, since the guide member 5 is held by the holder 3 so as to be located right above the cutting position of the outer surface welding bead 1a, the cutting waste 1c can be guided earlier by the guide member 5, and the cutting waste 1c It is possible to more reliably suppress fluctuations in the direction in which the tip ends.

また、案内部材５がホルダ３に溶接されているので、案内部材５をホルダ３に強固に固定でき、案内部材５による切削屑１ｃの案内性を向上できる。 Further, since the guide member 5 is welded to the holder 3, the guide member 5 can be firmly fixed to the holder 3, and the guideability of the cutting waste 1c by the guide member 5 can be improved.

また、案内部材５がホルダ３に螺着されているので、案内部材５を容易に交換することができ、案内部材５の摩耗によって切削屑１ｃの案内が不安定になることを回避することができる。 Further, since the guide member 5 is screwed to the holder 3, the guide member 5 can be easily replaced, and it is possible to prevent the guide of the cutting waste 1c from becoming unstable due to wear of the guide member 5. it can.

１ 溶接金属管
１ａ 外面溶接ビード
１ｃ 切削屑
１ｄ ピーク
２ ビードカッタ
３ ホルダ
４ 切削屑受けプレート
５ 案内部材
５ａ ねじ部 1 Weld Metal Pipe 1a External Weld Bead 1c Cutting Debris 1d Peak 2 Bead Cutter 3 Holder 4 Cutting Debris Receiving Plate 5 Guide Member 5a Screw Part

Claims (9)

溶接金属管の外面溶接ビードを切削して除去するための溶接ビード除去装置であって、
前記外面溶接ビードを切削するビードカッタと、
前記ビードカッタが前記外面溶接ビードを切削することにより生じる切削屑の先端を受けて、前記切削屑を破断させる切削屑受けプレートと
を備え、
前記切削屑は、前記ビードカッタによる前記外面溶接ビードの切削位置から弧を描いて延び、
前記切削屑受けプレートは、前記弧のピークを越えた位置で前記切削屑の先端を受けるように配置されている、
溶接ビード除去装置。 A weld bead removing device for cutting and removing an outer weld bead of a welded metal pipe,
A bead cutter for cutting the outer surface welding bead,
A cutting scrap receiving plate that receives the tip of cutting scraps generated by the bead cutter cutting the outer surface welding bead and breaks the cutting scraps;
The cutting waste extends in an arc from a cutting position of the outer surface welding bead by the bead cutter,
The chip receiving plate is arranged to receive the tip of the chip at a position beyond the peak of the arc,
Weld bead removing device. 前記外面溶接ビードの切削位置から延びる前記切削屑と接触して前記切削屑を案内する案内部材
をさらに備えている、請求項１記載の溶接ビード除去装置。 The weld bead removing device according to claim 1, further comprising: a guide member that comes into contact with the cutting debris extending from a cutting position of the outer surface welding bead and guides the cutting debris. 前記案内部材の前記切削屑と接触される部分は、突状の曲面である、
請求項２記載の溶接ビード除去装置。 The portion of the guide member that comes into contact with the cutting waste is a protruding curved surface,
The weld bead removing device according to claim 2. 前記ビードカッタを保持するホルダ
をさらに備え、
前記案内部材は、前記ビードカッタの直上に位置するように前記ホルダに保持されている、
請求項２又は請求項３に記載の溶接ビード除去装置。 Further comprising a holder for holding the bead cutter,
The guide member is held by the holder so as to be located immediately above the bead cutter.
The weld bead removing device according to claim 2 or 3. 前記案内部材は、前記ホルダに溶接されている、
請求項４記載の溶接ビード除去装置。 The guide member is welded to the holder,
The weld bead removing device according to claim 4. 前記案内部材は、前記ホルダに螺着されている、
請求項４記載の溶接ビード除去装置。 The guide member is screwed to the holder,
The weld bead removing device according to claim 4. 前記ホルダは、ホルダ本体と、前記ホルダ本体に着脱可能な分割体とを有し、
前記案内部材は、前記ホルダ本体及び前記分割体によって挟持されている、
請求項４記載の溶接ビード除去装置。 The holder has a holder body and a split body that is attachable to and detachable from the holder body,
The guide member is sandwiched between the holder body and the divided body,
The weld bead removing device according to claim 4. 前記溶接金属管が亜鉛系めっき鋼管である、
請求項１から請求項７までのいずれか一項に記載の溶接ビード除去装置。 The weld metal pipe is a zinc-based plated steel pipe,
The weld bead removing device according to any one of claims 1 to 7. 請求項４から請求項８までのいずれか１項に記載のホルダ。 The holder according to any one of claims 4 to 8.
JP2019019104A 2019-02-05 2019-02-05 Welding bead removal device and bead cutter holder of the same Pending JP2020124782A (en)

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