JP2011067828A - Method for forming thin bent pipe member and production device for the thin bent pipe member - Google Patents
Method for forming thin bent pipe member and production device for the thin bent pipe member Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005452 bending Methods 0.000 claims abstract description 69
- 238000005520 cutting process Methods 0.000 claims abstract description 38
- 239000011324 bead Substances 0.000 claims description 14
- 238000003754 machining Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
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Abstract
Description
本発明は、薄肉管に曲げ加工等を施して薄肉曲がり管部材を成形する方法及びこの薄肉曲がり管部材を製造するための製造装置に関するものである。 The present invention relates to a method of forming a thin-walled bent pipe member by bending the thin-walled pipe and the like, and a manufacturing apparatus for manufacturing the thin-walled bent pipe member.
従来から金属材料の板状のワークを、複数の成形装置（プレス装置等）を用いて順次、所定の形状に成形して行く場合、そのワークをトランスファ装置にて搬送して、順次各成形装置間を移動させるようにしたものが知られている（特許文献１参照）。 Conventionally, when a plate-shaped workpiece made of a metal material is sequentially formed into a predetermined shape using a plurality of forming devices (pressing devices, etc.), the workpiece is conveyed by a transfer device and sequentially formed into each forming device. The thing which moved between them is known (refer patent document 1).
この特許文献１には、鋼板を複数のプレス装置等を用いて順次所定の形状に形成して行く構成が開示されている。 Patent Document 1 discloses a configuration in which a steel plate is sequentially formed into a predetermined shape using a plurality of press devices or the like.
しかしながら、このような従来のものにおいては、板材のワークをトランスファ装置で搬送しながら順次プレス成形して行く技術は存在していたが、薄肉管の曲げ加工等は、三次元的にアームが可動するロボットを使用して行うようにしており、直線的なライン上に配置された曲げ装置等を用いて順次、加工して行く技術は存在していないものであった。 However, in such a conventional one, there is a technique in which a plate work is sequentially press-formed while being transferred by a transfer device. However, the arm can be moved three-dimensionally for bending a thin-walled tube. However, there is no technique for sequentially processing using a bending device or the like arranged on a straight line.
本発明は、かかる従来の技術に鑑み、薄肉管の曲げ加工等を直線的なライン上に配置された装置で、効率よく加工することができる薄肉曲がり管部材の成形方法及びその薄肉曲がり管部材を製造するための製造装置を提供することを目的とする。 In view of the conventional technology, the present invention provides a method for forming a thin-walled bent pipe member that can be efficiently processed by an apparatus arranged on a straight line for bending a thin-walled pipe, and the thin-walled bent pipe member. It aims at providing the manufacturing apparatus for manufacturing.
かかる課題を解決するため、請求項１に記載の発明は、薄肉管のワークの少なくとも一個所を曲げる曲げ工程と、該曲げ工程の後に、該ワークの加工端面側を切断する切断工程とを有する製造ラインにて薄肉曲がり管部材を製造する製造方法において、前記曲げ工程では、曲げの曲率半径の中心軸が前記製造ラインの流れ方向と平行に設けられ、前記各工程において、前記ワークの加工端面側の中心線が前記流れ方向と略直交するようにして加工した薄肉曲がり管部材の製造方法としたことを特徴とする。 In order to solve this problem, the invention described in claim 1 includes a bending step of bending at least one portion of the thin-walled workpiece, and a cutting step of cutting the processed end face side of the workpiece after the bending step. In the manufacturing method for manufacturing a thin bent pipe member in a manufacturing line, in the bending step, a center axis of a bending radius of curvature is provided in parallel with the flow direction of the manufacturing line, and in each step, the processing end surface of the workpiece The manufacturing method of the thin-walled bent pipe member processed so that the center line on the side is substantially orthogonal to the flow direction is provided.
請求項２に記載の発明は、請求項１に記載の構成に加え、前記薄肉管のワークには、溶接ビードが長手方向に沿って形成され、前記曲げ工程において、前記ワークは、前記溶接ビードが真上又は真下以外の位置に来るようにセットされた状態で、曲げ加工されることを特徴とする。 According to a second aspect of the present invention, in addition to the configuration of the first aspect, a weld bead is formed along a longitudinal direction of the workpiece of the thin-walled tube, and in the bending step, the workpiece is the weld bead. It is characterized in that it is bent in a state where it is set so as to be at a position other than directly above or directly below.
請求項３に記載の発明は、請求項１又は２に記載の構成に加え、前記ワークの加工端面側を拡径させる拡管工程を有することを特徴とする。 In addition to the structure of Claim 1 or 2, the invention of Claim 3 has a pipe expansion process which expands the process end surface side of the said workpiece | work.
請求項４に記載の発明は、請求項１乃至３の何れか一つに記載の構成に加え、前記切断工程は、切断工具を前記ワークの加工端面の内側に挿入して外側に移動させることにより前記ワーク加工端面側を切断することを特徴とする。 According to a fourth aspect of the present invention, in addition to the configuration according to any one of the first to third aspects, the cutting step inserts a cutting tool into the processing end surface of the workpiece and moves it outward. The workpiece machining end face side is cut by the following.
請求項５に記載の発明は、請求項１乃至４の何れか一つに記載の構成に加え、前記製造ラインの流れ方向と平行に配設された搬送レールと、該搬送レールに沿って移動し、前記ワークを把持する把持装置とを有するトランスファ装置が設けられ、該トランスファ装置により、各工程間の前記ワークの搬送を行うようにしたことを特徴とする。 According to a fifth aspect of the present invention, in addition to the configuration according to any one of the first to fourth aspects, the conveyance rail disposed in parallel with the flow direction of the production line, and moved along the conveyance rail A transfer device having a gripping device for gripping the workpiece is provided, and the transfer device transports the workpiece between the steps.
請求項６に記載の発明は、薄肉管のワークの少なくとも一個所を曲げる曲げ装置と、該曲げ装置の後に、該ワークの加工端面側を切断する切断装置とを有する製造ラインにて薄肉曲がり管部材を製造する製造装置において、前記曲げ装置では、曲げの曲率半径の中心軸が前記製造ラインの流れ方向と平行に設けられ、前記各装置において、前記ワークの加工端面側の中心線が前記流れ方向と略直交するように搬送してセットする搬送手段を有する薄肉曲がり管部材の製造装置としたことを特徴とする。 The invention according to claim 6 is a thin-walled bent pipe in a production line having a bending device that bends at least one part of a thin-walled workpiece and a cutting device that cuts the processed end surface side of the workpiece after the bending device. In the manufacturing apparatus for manufacturing a member, in the bending apparatus, a central axis of a bending radius of curvature is provided in parallel with a flow direction of the manufacturing line, and in each of the apparatuses, a center line on the processing end surface side of the workpiece is the flow. The apparatus is characterized in that it is a manufacturing apparatus for a thin bent pipe member having a conveying means for conveying and setting so as to be substantially orthogonal to the direction.
請求項１に記載された発明によれば、ワークの曲げの曲率半径の中心軸は、ラインの流れ方向と平行とすることにより、上下方向に曲げ加工を行うようにしているため、曲げ装置のライン方向の幅は、ワークの曲げの大きさや長さに依存されず、ワークの直径のみが影響することから、そのライン方向の幅を短くすることができる。また、各工程において、そのワークの加工端面側の中心線が前記流れ方向と略直交するようにセットされるようにされたため、各工程において、同方向（流れ方向と略直交する方向）から、ワークの加工を行うことができ、加工性を向上させることができる。 According to the first aspect of the present invention, since the center axis of the curvature radius of the bending of the workpiece is parallel to the flow direction of the line, the bending process is performed in the vertical direction. The width in the line direction is not dependent on the size and length of the bending of the workpiece, and only the diameter of the workpiece is affected, so that the width in the line direction can be shortened. Further, in each step, since the center line on the machining end face side of the workpiece is set so as to be substantially orthogonal to the flow direction, in each step, from the same direction (direction substantially orthogonal to the flow direction), Workpieces can be processed and workability can be improved.
請求項２に記載された発明によれば、曲げ工程において、ワークは、溶接ビードが真上又は真下以外の位置に来るようにセットされた状態で、曲げ加工されるようにしたため、曲げ加工時に、溶接ビード部分に最大引っ張り又は最大圧縮応力が生じることなく、その溶接ビード部分に亀裂等が生じないようにすることができる。 According to the invention described in claim 2, in the bending process, the workpiece is bent in a state in which the workpiece is set so that the weld bead is positioned at a position other than directly above or directly below. Further, it is possible to prevent the weld bead portion from being cracked or the like without causing the maximum tensile or maximum compressive stress in the weld bead portion.
請求項３に記載された発明によれば、ワークを曲げると共に、拡管加工をも行わせることができる。 According to the invention described in claim 3, the work can be bent and the tube expansion process can be performed.
請求項４に記載された発明によれば、切断工具をワークの加工端面の内側に挿入して外側に移動させることによりワーク加工端面側を切断することにより、内バリが生じることなく、内バリ取りを行うことなく、その切断後、外バリ取りを行うことができるため、内バリ工程を削減できる。 According to the fourth aspect of the present invention, the internal burr is generated without causing an internal burr by cutting the work processing end surface side by inserting the cutting tool into the processing end surface of the work and moving it outside. Since the outer deburring can be performed after the cutting without deburring, the inner burr process can be reduced.
請求項５に記載された発明によれば、トランスファ装置は、各装置の一方側に、各装置間に跨って配設できると共に、このトランスファ装置を用いることにより、ワークを人手によることなく、自動的に搬送することができ、生産効率を向上させることができる。 According to the fifth aspect of the present invention, the transfer device can be disposed between the devices on one side of each device, and by using this transfer device, the work can be automatically performed without manual operation. Therefore, the production efficiency can be improved.
請求項６に記載された発明によれば、薄肉管のワークの少なくとも一個所を曲げる曲げ装置と、この曲げ装置の後に、このワークの加工端面側を切断する切断装置とを有する製造ラインにて薄肉曲がり管部材を製造する製造装置において、曲げ装置では、曲げの曲率半径の中心軸が製造ラインの流れ方向と平行に設けられ、各装置において、ワークの加工端面側の中心線が前記流れ方向と略直交するようにセットされるように構成されたため、曲げ装置のライン方向の幅は、ワークの曲げの大きさや長さに依存されず、ワークの直径のみが影響することから、そのライン方向の幅を短くすることができると共に、各装置において、ワークの加工端面側の中心線が前記流れ方向と略直交するようにセットされるように構成されていることから、各装置において、同方向から、ワークの加工を行うことができ、加工性を向上させることができる。 According to the invention described in claim 6, in a production line having a bending device that bends at least one part of a thin tube workpiece, and a cutting device that cuts the processed end face side of the workpiece after the bending device. In a manufacturing apparatus for manufacturing a thin bent pipe member, in a bending apparatus, a central axis of a bending radius of curvature is provided in parallel with the flow direction of the manufacturing line, and in each apparatus, the center line on the machining end face side of the workpiece is the flow direction. The width of the bending device in the line direction is independent of the workpiece bending size and length, and only the workpiece diameter affects the line direction. Since the center line on the machining end face side of the workpiece is set so as to be substantially orthogonal to the flow direction in each apparatus, In the device, in the same direction, it is possible to perform the machining of the workpiece, it is possible to improve the workability.
以下、本発明の実施の形態について説明する。 Embodiments of the present invention will be described below.
図１乃至図１６は、本発明の実施の形態に係る図である。 1 to 16 are diagrams according to an embodiment of the present invention.
この実施の形態に係る製造装置１は、図１乃至図３に示すように、製造ラインＬ上（略一直線上）に、材料投入装置２、曲げ装置３、成形装置４、第１切断装置５、第１外バリ取り装置６、拡管装置７、第２切断装置８、第２外バリ取り装置９、プレス穴開け装置１０等が一列に配置されていると共に、薄肉管状のワークＷを搬送するトランスファ装置１１が配設され、このワークＷを成形して、図４に示すような形状の成形品である薄肉曲がり管部材１４を成形するようにしている。 As shown in FIGS. 1 to 3, the manufacturing apparatus 1 according to this embodiment includes a material input device 2, a bending device 3, a forming device 4, and a first cutting device 5 on a manufacturing line L (substantially on a straight line). The first outer deburring device 6, the tube expanding device 7, the second cutting device 8, the second outer deburring device 9, the press punching device 10, etc. are arranged in a line and convey the thin tubular workpiece W. A transfer device 11 is disposed, and the workpiece W is formed to form a thin bent tube member 14 which is a molded product having a shape as shown in FIG.
この成形品である薄肉曲がり管部材１４は、図４に示すように、金属製（例えば鋼製）で、薄肉の管状を呈し、Ｒ部１４ａで折曲げられ、一端部側（加工端面部側）に拡管部１４ｂが形成されると共に、側壁部に、開口部１４ｃが形成されている。 As shown in FIG. 4, the thin bent tube member 14 that is a molded product is made of metal (for example, steel), has a thin tubular shape, is bent at the R portion 14 a, and is one end side (processing end face side). ) And an opening 14c are formed in the side wall.
詳しくは、その「搬送手段」としてのトランスファ装置１１は、図１乃至図３に示すように、各装置２…の作業側（作業員通路側）で、製造ラインＬの流れ方向Ｌ１と平行に搬送レール１１ａが配設されると共に、この搬送レール１１ａに沿って各工程（各装置２…）間毎に移動する把持装置１１ｂが複数配設されている。これら把持装置１１ｂにより、ワークＷを掴んで、所定の向きにして前の工程から次の工程へ順次搬送するようにしている。 Specifically, as shown in FIGS. 1 to 3, the transfer device 11 as the “conveying means” is parallel to the flow direction L1 of the production line L on the work side (worker passage side) of each device 2. A transport rail 11a is provided, and a plurality of gripping devices 11b that move between the respective steps (each device 2...) Are provided along the transport rail 11a. By these gripping devices 11b, the workpiece W is gripped and conveyed in a predetermined direction from the previous process to the next process.
また、材料投入装置２では、薄肉管のワークＷには、図５に示すように、長手方向に沿って溶接ビードＷ１が設けられており、この溶接ビードＷ１を図示省略の色差センサで検出し、その溶接ビードＷ１が真上Ａ又は真下Ｂ以外の位置に来るようにして、ワークＷを所定の回転角位置にして配列するようにしている。換言すれば、図５中、曲げ方向Ｍに対して、溶接ビードＷ１が真上Ａ又は真下Ｂ以外の位置に来るようにして、曲げ加工時に、溶接ビードＷ１部分に最大引っ張り又は最大圧縮応力が生じることなく、その溶接ビードＷ１部分に亀裂等が生じないようにしている。 Further, in the material feeding apparatus 2, a weld bead W1 is provided along the longitudinal direction of the thin-walled workpiece W as shown in FIG. 5, and this weld bead W1 is detected by a color difference sensor (not shown). The workpiece W is arranged at a predetermined rotation angle position so that the weld bead W1 comes to a position other than directly above A or below B. In other words, in FIG. 5, with respect to the bending direction M, the weld bead W1 comes to a position other than directly above A or directly below B, and the maximum tensile or maximum compressive stress is applied to the weld bead W1 portion during bending. The crack does not occur in the weld bead W1 without being generated.
この所定の位置に配置されたワークＷを、トランスファ装置１１の把持装置１１ｂで把持して、次工程の曲げ装置３まで搬送する。この曲げ装置３では、図１に示すように、製造ラインＬの流れ方向Ｌ１に対して直交する方向Ｙに沿うようにワークＷをセットして、ワークＷの加工端面Ｗ２側の中心線Ｏ２が流れ方向Ｌ１と略直交するようにする。 The workpiece W placed at this predetermined position is gripped by the gripping device 11b of the transfer device 11 and conveyed to the bending device 3 in the next process. In this bending apparatus 3, as shown in FIG. 1, the workpiece W is set along a direction Y orthogonal to the flow direction L <b> 1 of the production line L, and the center line O <b> 2 on the processing end surface W <b> 2 side of the workpiece W is It is made to be substantially orthogonal to the flow direction L1.
そして、その曲げ装置３は、図６に示すように、回転駒３ａの回転クランプ３ｂ、クランプ装置３ｃのスライドクランプ３ｄ、芯金３ｅ、ワーク押圧装置３ｆのワーク押圧具３ｇ、その他をそれぞれの後退位置に設定する。 Then, as shown in FIG. 6, the bending device 3 retreats the rotary clamp 3b of the rotary piece 3a, the slide clamp 3d of the clamp device 3c, the cored bar 3e, the workpiece pressing tool 3g of the workpiece pressing device 3f, and the like. Set to position.
次に、図７に示すように、回転クランプ３ｂを下降させ、ワークＷを回転駒３ａに固定し、芯金３ｅを所定のスタート位置まで前進させる。この状態で、スライドクランプ３ｄを下降させ、ワークＷ及び芯金３ｅをワイパー３ｈに押し付ける。さらに、ワーク押圧具３ｇを前進させて、先端がワークＷの加工端面Ｗ２を押圧するようにする。 Next, as shown in FIG. 7, the rotary clamp 3b is lowered, the workpiece W is fixed to the rotary piece 3a, and the mandrel 3e is advanced to a predetermined start position. In this state, the slide clamp 3d is lowered, and the workpiece W and the cored bar 3e are pressed against the wiper 3h. Further, the workpiece pressing tool 3g is advanced so that the tip presses the processing end surface W2 of the workpiece W.
その後、図８に示すように、回転駒３ａを矢印Ｐの方向（図中左回り）に回転させる。この時、ワーク押圧具３ｇは初期位置において、ワークＷの端面に予圧を加えており、回転が終了するまで圧力をかけ続けている。スライドクランプ３ｄは、ワークＷが左方向（前方）に移動するのに伴い、左方向（前方）に移動する。 Thereafter, as shown in FIG. 8, the rotary piece 3a is rotated in the direction of arrow P (counterclockwise in the figure). At this time, the workpiece pressing tool 3g applies a preload to the end face of the workpiece W at the initial position, and continues to apply the pressure until the rotation is completed. The slide clamp 3d moves leftward (forward) as the workpiece W moves leftward (forward).
これで、ワークＷの曲げ加工の結果、薄肉となる側の端面部分がワーク押圧具３ｇで押圧されている。そのため、ワークＷの加工端面Ｗ側の一部（上部）が押圧されて、薄肉となる側に肉を補充しながら曲げ加工が行われることとなる。その結果、よりひずみや割れの少ない製品を製造することが可能となる。 As a result of bending the workpiece W, the end surface portion on the side that is thin is pressed by the workpiece pressing tool 3g. Therefore, a part (upper part) of the workpiece W on the processing end surface W side is pressed, and bending is performed while replenishing the thin side. As a result, it becomes possible to manufacture a product with less distortion and cracking.
この曲げ加工を行う場合の芯金３ｅの位置を図９に基づいて説明する。 The position of the metal core 3e when performing this bending process will be described with reference to FIG.
その芯金３ｅの曲げスタート位置は、芯金３ｅのストレート部分の先端が回転駒３ａの回転中心（曲げの曲率半径の中心軸）Ｏ１の真上の位置に到来している。この芯金３ｅの位置は、ワークＷの曲げ角度に応じて適正な位置に設定する。 The bending start position of the cored bar 3e is such that the tip of the straight portion of the cored bar 3e has reached a position directly above the rotation center (center axis of the bending radius of curvature) O1 of the rotary piece 3a. The position of the metal core 3e is set to an appropriate position according to the bending angle of the workpiece W.
この曲げ工程では、曲げの曲率半径の中心軸Ｏ１が製造ラインＬの流れ方向Ｌ１と平行に設けられている。 In this bending step, the central axis O1 of the bending radius of curvature is provided in parallel with the flow direction L1 of the production line L.
次に、その曲げられたワークＷをトランスファ装置１１で曲げ装置３から成形装置４まで搬送し、この成形装置４により、ワークＷの形状を整える。 Next, the bent work W is transferred from the bending device 3 to the forming device 4 by the transfer device 11, and the shape of the work W is adjusted by the forming device 4.
そして、その折曲げられたワークＷをトランスファ装置１１で成形装置４から第１切断装置５まで搬送し、この第１切断装置５により、ワークＷの加工端面Ｗ２側を内側から外側に向けて切断して、ワークＷの加工端面Ｗ２側を切断する。このように内側から外側に向けてワークＷを切断するため、切断面の内側にはバリが出ず、外側にバリが出ることとなる。この際にも、ワークＷの加工端面Ｗ２側の中心線Ｏ２が流れ方向Ｌ１と略直交するようにセットして成形を行う。 Then, the bent work W is conveyed by the transfer device 11 from the forming device 4 to the first cutting device 5, and the first cutting device 5 cuts the processing end surface W2 side of the work W from the inside to the outside. Then, the processing end surface W2 side of the workpiece W is cut. Thus, since the workpiece | work W is cut | disconnected from the inner side toward the outer side, a burr | flash will not come out inside a cut surface but a burr | flash will come out outside. Also at this time, forming is performed by setting the work W so that the center line O2 on the processing end face W2 side is substantially orthogonal to the flow direction L1.
詳しくは、図１０乃至図１３に示すように、上ダイス５ａ及び下ダイス５ｂで、ワークＷを保持し、これらのダイス５ａ，５ｂから、ワークＷの加工端面Ｗ２側を所定の位置まで突き出させる。そして、第１切断装置５の先端部に設けられた切断用パンチ５ｃを、円形の加工端面Ｗ２の内側に挿入し、駆動源５ｄにて切断用パンチ５ｃを、図１３に示すように、原点位置をａ，ｂ，ｃ，ｄ，ｂ，ｅ，ｆ，ｇ，ｅ，ａの順で移動（外側に向けて種々の方向に平行移動）させることにより、ワークＷの加工端面Ｗ２を切断する。このように内側から外側に向けて切断することにより、その加工端面Ｗ２には、内面側にバリが生じることなく、外面側にのみ発生することとなる。 Specifically, as shown in FIGS. 10 to 13, the workpiece W is held by the upper die 5a and the lower die 5b, and the processing end surface W2 side of the workpiece W is protruded to a predetermined position from these dies 5a and 5b. . Then, the cutting punch 5c provided at the tip of the first cutting device 5 is inserted inside the circular processing end surface W2, and the cutting punch 5c is moved to the origin by the drive source 5d as shown in FIG. The machining end face W2 of the workpiece W is cut by moving the position in the order of a, b, c, d, b, e, f, g, e, a (translation in various directions toward the outside). . By cutting from the inside to the outside in this way, the processing end surface W2 is generated only on the outer surface side without causing burrs on the inner surface side.
このようにワークＷの加工端面Ｗ２側を切断することにより、曲げにより発生した加工端面Ｗ２側の変形部分を取り除くことができる。 By cutting the processing end surface W2 side of the workpiece W in this way, a deformed portion on the processing end surface W2 side generated by bending can be removed.
次いで、その成形されたワークＷをトランスファ装置１１で第１切断装置５から第１外バリ取り装置６まで搬送し、この第１外バリ取り装置６により、ワークＷの加工端面Ｗ２の外バリ取りを行う。このバリ取りは、図示省略の刃物を加工端面Ｗ２の周囲を回転させることにより、外バリを取るようにしている。この際にも、ワークＷの加工端面Ｗ２側の中心線Ｏ２が流れ方向Ｌ１と略直交するようにセットして成形を行う。 Next, the formed workpiece W is transferred from the first cutting device 5 to the first outer deburring device 6 by the transfer device 11, and the outer deburring of the processing end surface W <b> 2 of the workpiece W is performed by the first outer deburring device 6. I do. In this deburring, an outer burr is removed by rotating a cutter (not shown) around the processing end surface W2. Also at this time, forming is performed by setting the work W so that the center line O2 on the processing end face W2 side is substantially orthogonal to the flow direction L1.
次に、その成形されたワークＷをトランスファ装置１１で第１外バリ取り装置６から拡管装置７まで搬送し、この拡管装置７により、ワークＷの加工端面Ｗ２側の拡管を行う。この際にも、ワークＷの加工端面Ｗ２が、製造ラインＬの流れ方向Ｌ１と平行となるようにセットして成形を行う。 Next, the molded workpiece W is transferred from the first outer deburring device 6 to the tube expansion device 7 by the transfer device 11, and the tube expansion device 7 performs tube expansion on the processing end surface W2 side. Also at this time, forming is performed by setting the processing end surface W2 of the workpiece W to be parallel to the flow direction L1 of the production line L.
詳しくは、まず、図１４に示すように、小径部７ａと大径部７ｂとを有するダイス７ｃに、ワークＷをセットする。そして、小径部７ｄと大径部７ｅとを有する拡管用パンチ７ｆを、図１５に示すように、ワークＷの加工端面Ｗ２側に圧入し、加工端面Ｗ２側に拡管部１４ｂを形成する。 Specifically, first, as shown in FIG. 14, the workpiece W is set on a die 7c having a small diameter portion 7a and a large diameter portion 7b. Then, as shown in FIG. 15, a tube expansion punch 7f having a small diameter portion 7d and a large diameter portion 7e is press-fitted to the processing end surface W2 side of the workpiece W, and a tube expansion portion 14b is formed on the processing end surface W2 side.
その後、その成形されたワークＷをトランスファ装置１１で拡管装置７から第２切断装置８まで搬送し、図１６に示すように、ワークＷを図示省略の上ダイスと下ダイス８ｂとの間にセットする。この状態から、切断用パンチ８ｃを、上述の第１切断装置５と同様に図１３に示すように移動させ、ワークＷの加工端面Ｗ２側を内側から外側に向けて切断する。このように内側から外側に向けてワークＷを切断するため、切断面の内側にはバリが出ず、外側にバリが出ることとなる。この際にも、ワークＷの加工端面Ｗ２側の中心線Ｏ２が流れ方向Ｌ１と略直交するようにセットして成形を行う。なお、切断加工の詳細については、上記と同様であるので、説明を省略する。 Thereafter, the molded workpiece W is transferred from the tube expansion device 7 to the second cutting device 8 by the transfer device 11, and the workpiece W is set between the upper die and the lower die 8b (not shown) as shown in FIG. To do. From this state, the cutting punch 8c is moved as shown in FIG. 13 similarly to the first cutting device 5 described above, and the workpiece W is cut from the inner side to the outer side. Thus, since the workpiece | work W is cut | disconnected from the inner side toward the outer side, a burr | flash will not come out inside a cut surface but a burr | flash will come out outside. Also at this time, forming is performed by setting the work W so that the center line O2 on the processing end face W2 side is substantially orthogonal to the flow direction L1. The details of the cutting process are the same as described above, and thus the description thereof is omitted.
次いで、その成形されたワークＷをトランスファ装置１１で第２切断装置８から第２外バリ取り装置９まで搬送し、この第２外バリ取り装置９により、上記第１外バリ取り装置６と同様に、ワークＷの加工端面Ｗ２側の外バリ取りを行う。このバリ取りは、詳細は省略するが、図示省略の刃物を回転させることにより、外バリを取るようにしている。この際にも、ワークＷの加工端面Ｗ２側の中心線Ｏ２が流れ方向Ｌ１と略直交するようにセットして成形を行う。 Next, the molded workpiece W is transferred from the second cutting device 8 to the second outer deburring device 9 by the transfer device 11, and the second outer deburring device 9 is similar to the first outer deburring device 6. In addition, the external deburring of the workpiece W on the processing end surface W2 side is performed. Although details of this deburring are omitted, an outer burr is removed by rotating a blade (not shown). Also at this time, forming is performed by setting the work W so that the center line O2 on the processing end face W2 side is substantially orthogonal to the flow direction L1.
次に、その成形されたワークＷをトランスファ装置１１で第２外バリ取り装置９からプレス穴開け装置１０まで搬送し、このプレス穴開け装置１０により、ワークＷの側面に所定の大きさの孔径の開口部１４ｃを形成する。この開口部１４ｃの形成は、図示省略の円形の打抜き面を有するポンチを下降させることにより、ワークＷが打ち抜かれ、この打ち抜かれた端材が、図示省略のダイスの穴内に落下し、ワークＷからダイスが引き抜かれる際に、端材をダイス孔から下方に排出することができるようになっている。 Next, the molded workpiece W is transferred from the second outer deburring device 9 to the press punching device 10 by the transfer device 11, and a hole diameter of a predetermined size is formed on the side surface of the workpiece W by the press drilling device 10. The opening 14c is formed. The opening 14c is formed by lowering a punch having a circular punching surface (not shown) to punch the work W, and the punched end material falls into a hole of a die (not shown). When the die is pulled out from the die, the end material can be discharged downward from the die hole.
この際にも、ワークＷの加工端面Ｗ２側の中心線Ｏ２が流れ方向Ｌ１と略直交するようにセットして成形を行う。 Also at this time, forming is performed by setting the work W so that the center line O2 on the processing end face W2 side is substantially orthogonal to the flow direction L1.
このようにして、図４に示すような、薄肉曲がり管部材１４を成形することができる。 In this way, a thin bent tube member 14 as shown in FIG. 4 can be formed.
このようなものにあっては、ワークＷの曲げの曲率半径の中心軸Ｏ１は、ラインの流れ方向Ｌ１と平行とすることにより、上下方向に曲げ加工を行うようにしているため、曲げ装置３の製造ラインＬ方向の幅は、ワークＷの曲げの大きさや長さに依存されず、ワークＷの直径のみが影響することから、そのライン方向Ｌの幅を短くすることができる。また、各工程において、ワークＷの加工端面Ｗ２側の中心線Ｏ２が流れ方向Ｌ１と略直交するようにセットされるように構成されたため、各工程において、同方向から、ワークＷの加工を行うことができ、加工性を向上させることができる。 In such a case, since the center axis O1 of the curvature radius of bending of the workpiece W is parallel to the line flow direction L1, bending is performed in the vertical direction. The width in the production line L direction is not dependent on the bending size or length of the workpiece W, and only the diameter of the workpiece W affects the width, so that the width in the line direction L can be shortened. Further, in each step, since the center line O2 on the processing end surface W2 side of the workpiece W is set so as to be substantially orthogonal to the flow direction L1, the workpiece W is processed from the same direction in each step. And processability can be improved.
また、トランスファ装置１１は、各装置２…の一方側に、各装置２…間に跨って配設できると共に、このトランスファ装置１１を用いることにより、ワークＷを人手によることなく、自動的に搬送することができ、生産効率を向上させることができる。 Further, the transfer device 11 can be disposed on one side of each device 2... Across the devices 2. By using this transfer device 11, the workpiece W can be automatically conveyed without human intervention. Production efficiency can be improved.
なお、上記実施の形態では、曲げ加工以外にも、拡管加工等が設けられているが、これに限らず、縮管加工等の工程や他の工程もを使用することができる。この発明では、少なくとも曲げ工程と切断工程を有するものであればよい。また、ワークＷの曲げ個所は、この実施の形態では１個所であったが、これに限らず、複数個所折曲げても良い。さらに、上記実施の形態では、ワークＷとして、鉄製電縫管を用いて説明したが、これに限らず、溶接を伴わない引き抜き管や鉄以外のアルミ等の金属管に、本発明を適用することも可能である。 In the above-described embodiment, tube expansion processing and the like are provided in addition to bending processing. However, the present invention is not limited to this, and processes such as tube contraction processing and other processes can also be used. In this invention, what is necessary is just to have a bending process and a cutting process at least. Further, although the bending portion of the workpiece W is one in this embodiment, the bending is not limited to this, and a plurality of bending portions may be bent. Furthermore, in the said embodiment, although demonstrated using the iron electric sewing pipe as the workpiece | work W, this invention is applied not only to this but metal pipes, such as an extraction pipe without welding and aluminum other than iron. It is also possible.
１…製造装置
２…材料投入装置
３…曲げ装置
４…成形装置
５…第１切断装置
６…第１外バリ取り装置
７…拡管装置
８…第２切断装置
９…第２外バリ取り装置
10…プレス穴開け装置
11…トランスファ装置
11a…搬送レール
11b…把持装置
14…薄肉曲がり管部材
Ｌ…製造ライン
L1…流れ方向
Ｗ…ワーク
W1…溶接ビード
W2…加工端面
O1…曲げの曲率半径の中心軸
O2…中心線
DESCRIPTION OF SYMBOLS 1 ... Manufacturing apparatus 2 ... Material input apparatus 3 ... Bending apparatus 4 ... Molding apparatus 5 ... 1st cutting apparatus 6 ... 1st outer deburring apparatus 7 ... Tube expansion apparatus 8 ... 2nd cutting apparatus 9 ... 2nd outer deburring apparatus
10 ... Press punching device
11 ... Transfer device
11a… Conveying rail
11b… Gripping device
14 ... Thin bent pipe member L ... Production line
L1 ... Flow direction W ... Workpiece
W1… Welding bead
W2 ... Machining end face
O1: central axis of bending radius of curvature
O2 ... Center line
Claims (6)
前記曲げ工程では、曲げの曲率半径の中心軸が前記製造ラインの流れ方向と平行に設けられ、前記各工程において、前記ワークの加工端面側の中心線が前記流れ方向と略直交するようにして加工したことを特徴とする薄肉曲がり管部材の製造方法。 In a manufacturing method for manufacturing a thin-walled bent pipe member in a manufacturing line having a bending step of bending at least one part of a thin-walled workpiece, and a cutting step of cutting a processed end face side of the workpiece after the bending step,
In the bending step, a central axis of a bending radius of curvature is provided in parallel with the flow direction of the production line, and in each step, the center line on the processing end surface side of the workpiece is substantially orthogonal to the flow direction. A method for manufacturing a thin-walled bent pipe member characterized by being processed.
前記曲げ装置では、曲げの曲率半径の中心軸が前記製造ラインの流れ方向と平行に設けられ、前記各装置において、前記ワークの加工端面側の中心線が前記流れ方向と略直交するように搬送してセットする搬送手段を有することを特徴とする薄肉曲がり管部材の製造装置。 In a manufacturing apparatus for manufacturing a thin-walled bent pipe member in a manufacturing line having a bending apparatus that bends at least one part of a thin-walled work, and a cutting apparatus that cuts the processed end face side of the work after the bending apparatus,
In the bending apparatus, a center axis of a bending radius of curvature is provided in parallel with the flow direction of the production line, and in each of the apparatuses, the center line on the processing end surface side of the workpiece is conveyed so as to be substantially orthogonal to the flow direction. And an apparatus for manufacturing a thin-walled bent pipe member.
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| CN108326074A (en) * | 2018-03-19 | 2018-07-27 | 福州诺贝尔福基机电有限公司 | Oiling iron pipe molding machine and its moulding process |
| CN114558918A (en) * | 2022-03-25 | 2022-05-31 | 昌河飞机工业（集团）有限责任公司 | Bending forming method for large-pipe-diameter thin-walled pipe without transition in middle |
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| CN108326074B (en) * | 2018-03-19 | 2023-10-10 | 福州诺贝尔福基机电有限公司 | Forming device and forming process for oiling iron pipe |
| CN114558918A (en) * | 2022-03-25 | 2022-05-31 | 昌河飞机工业（集团）有限责任公司 | Bending forming method for large-pipe-diameter thin-walled pipe without transition in middle |
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| JP5389587B2 (en) | 2014-01-15 |
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