JP2007283386A - Method of squeezing work, and apparatus therefor - Google Patents

Method of squeezing work, and apparatus therefor Download PDF

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JP2007283386A
JP2007283386A JP2006115829A JP2006115829A JP2007283386A JP 2007283386 A JP2007283386 A JP 2007283386A JP 2006115829 A JP2006115829 A JP 2006115829A JP 2006115829 A JP2006115829 A JP 2006115829A JP 2007283386 A JP2007283386 A JP 2007283386A
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workpiece
spindle
tool
roller
mounting base
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Hiroaki Ishida
博昭 石田
Yoshio Iio
良夫 飯尾
Hiroaki Mizumoto
宏明 水本
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Nihon Spindle Manufacturing Co Ltd
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Nihon Spindle Manufacturing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of squeezing work, which method can achieve the high accuracy of the roundness formed by the squeezing work, and can finish the reduction of a pipe diameter and the grooving work in a short period of time. <P>SOLUTION: In the method of squeezing work, working tools are arranged on a tool mounting base 3 mounted on the tip end of a rotatable main spindle 2 so as to slide in the direction perpendicular to the main spindle 2, and a workpiece W is fixed to a workpiece fixing base 4 arranged so as to be opposed to the main spindle 2, and the workpiece W is spun by means of the working tools. In this case, a diameter-reducing process is carried out by means of a pair of squeezing rollers R1, R1 mounted on the tool mounting base 3 by moving the workpiece W in parallel to the main spindle 2. Next, the groove portion Wa is formed by pressing grooving rollers R2 mounted to the tool mounting base against the peripheral portion of the end of the portion reduced in the diameter-reducing process. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、パイプ又は円筒状素材の絞り加工を行う絞り加工方法及びその装置に関し、特に、加工精度の向上と加工時間の短縮化を図ることのできる絞り加工方法及びその装置に関するものである。   The present invention relates to a drawing method and apparatus for drawing a pipe or a cylindrical material, and more particularly to a drawing method and apparatus capable of improving processing accuracy and shortening processing time.

従来、例えば、パイプ先端等の円筒状素材（以下、「ワーク」という。）に絞り加工を施し、その端部に溝加工を行う必要がある場合その加工方法としては、ワークを回転主軸に固定し、ターレット台に絞り加工用の絞りローラと溝加工用の溝ローラとを配設し、絞りローラによる縮管工程が終了した後、一旦、ターレット台をワークから遠ざけ、ターレット台を回転させてツールチェンジを行い溝加工を施すようにしている。   Conventionally, for example, when it is necessary to draw a cylindrical material such as a pipe tip (hereinafter referred to as “workpiece”) and groove the end, the work is fixed to the rotating spindle. Then, the drawing roller for squeezing and the groove roller for grooving are arranged on the turret base, and after the tube shrinking process by the squeezing roller is completed, the turret base is once moved away from the work, and the turret base is rotated. The tool is changed and groove processing is performed.

この加工方法に用いる絞り加工装置を図４に示す。この絞り加工装置２０は、回転主軸２１に配設したチャック２２と、該回転主軸に対向して配設した芯金２３と、チャック２２に取り付けたワークＷの表面に絞り加工を施す絞りローラＲ３と溝加工を行うための溝加工用ローラＲ４とを配備したターレット台２４とからなる。
このターレット台２４は、回転主軸２１の軸芯方向と直角に移動するように走行台２５に敷設した走行レール２５ａ上に載置し、サーボモータ等の適宜手段で移動可能に配設する。また、走行台２５も、回転主軸２１の軸芯方向に移動可能となるように移動台２６に敷設した移動レール２６ａ上に載置し、走行台２５と同様にサーボモータ等の適宜手段で移動可能に配設する。
そして、ターレット台２４には、絞りローラＲ３と溝加工用ローラＲ４を配設し、ターレット台２４に配備した回動機構（図示省略）によって絞りローラＲ３と溝加工用ローラＲ４とのツールチェンジを可能としている。
（例えば、特許文献１参照）。 FIG. 4 shows a drawing apparatus used for this processing method. The drawing apparatus 20 includes a chuck 22 disposed on a rotation spindle 21, a core 23 disposed opposite to the rotation spindle, and a drawing roller R3 that performs drawing on the surface of a workpiece W attached to the chuck 22. And a turret base 24 provided with a grooving roller R4 for grooving.
The turret base 24 is placed on a travel rail 25a laid on the travel base 25 so as to move at right angles to the axis direction of the rotary main shaft 21, and is movably disposed by appropriate means such as a servo motor. The traveling table 25 is also placed on a moving rail 26a laid on the moving table 26 so as to be movable in the axial direction of the rotating spindle 21, and is moved by an appropriate means such as a servo motor similarly to the traveling table 25. Arrange them as possible.
The turret base 24 is provided with a squeezing roller R3 and a grooving roller R4, and a tool change between the squeezing roller R3 and the grooving roller R4 is performed by a rotation mechanism (not shown) provided on the turret base 24. It is possible.
(For example, refer to Patent Document 1).

上記構成において、被加工物であるワークＷをチャック２２で把持固定し、電動機等の駆動装置Ｍによって回転主軸２１を回転させる。そして、図５（ａ）〜（ｂ）に示すように絞りローラＲ３をワークＷの周面に当接させ、ワークＷの先端を縮管させる。
そして、一旦、ターレット台をワークから遠ざけ、ターレット台２４を回動させ、絞りローラＲ３から溝加工用ローラＲ４に変更し、図５（ｃ）に示すように縮管した先端部分に溝加工用ローラＲ４の凸部Ｒ４ａを押し付け、溝部Ｗａの加工を施すようにしている。 In the above configuration, the workpiece W as a workpiece is held and fixed by the chuck 22, and the rotary spindle 21 is rotated by the driving device M such as an electric motor. Then, as shown in FIGS. 5A to 5B, the squeezing roller R3 is brought into contact with the peripheral surface of the workpiece W, and the tip of the workpiece W is contracted.
Then, once the turret base is moved away from the work, the turret base 24 is rotated, the squeezing roller R3 is changed to the grooving roller R4, and the groove is formed at the tip portion contracted as shown in FIG. 5C. The convex portion R4a of the roller R4 is pressed to process the groove portion Wa.

しかし、この絞り加工装置では、縮管時の絞り加工が片側１ローラでの加工となり、縮管後の真円度が低く、縮管の絞り加工終了から溝加工に移行する際、ターレット台を回動しローラを変更するための時間がかかり、加工時間が上記実施例の場合で約２６秒程度かかっていた。更に、ワークを回転主軸のチャックに固定するためにワーク交換時に主軸を停止する必要があり、複数のワークを順次加工する際にサイクルタイムで大幅なロスがでるといった問題があった。
特開平９−２３９４７２号公報 However, in this drawing apparatus, the drawing process at the time of contraction is performed by one roller on one side, the roundness after the contraction is low, and the turret base is moved when shifting from the drawing process of the contraction pipe to the groove processing. It took time to rotate and change the roller, and the processing time took about 26 seconds in the case of the above embodiment. Furthermore, in order to fix the workpiece to the chuck of the rotating spindle, it is necessary to stop the spindle when exchanging the workpiece, and there is a problem that a significant loss occurs in cycle time when a plurality of workpieces are processed sequentially.
JP 9-239472 A

本発明は、上記従来の塑性加工方法の有する問題点に鑑み、絞り加工により真円度が高く、縮管と溝加工を短時間で完了することのできる絞り加工方法及びその装置を提供することを目的とする。   In view of the problems of the conventional plastic working method, the present invention provides a drawing method and apparatus capable of completing rounding and grooving in a short time with high roundness by drawing. With the goal.

上記目的を達成するため、本発明の絞り加工方法は、回転する主軸先端に取り付けた工具取付台に加工用工具を主軸と直交方向に摺動可能に配設し、主軸と対向する位置に配設したワーク固定台に固定したワークを前記加工用工具で絞り加工を施す絞り加工方法において、ワークを主軸と平行に移動させながら、工具取付台に取り付けた対となる絞りローラによって縮管工程を行い、次いで、工具取付台に取り付けた溝加工用ローラを縮管工程によって縮管された周端部に押し当て溝部を形成することを特徴とする。   In order to achieve the above object, the drawing method of the present invention is arranged such that a machining tool is slidable in a direction orthogonal to the main shaft on a tool mount attached to a rotating main shaft tip, and disposed at a position facing the main shaft. In the drawing method of drawing a workpiece fixed to a set workpiece fixing base with the processing tool, the contraction process is performed by a pair of drawing rollers attached to the tool mounting base while moving the workpiece parallel to the spindle. Next, the groove processing roller attached to the tool mounting base is pressed against the peripheral end portion that has been pipe-reduced by the pipe-reduction step, thereby forming a groove part.

また、前記絞り加工方法を実施するための、本発明の絞り加工装置は、主軸先端に加工用工具を主軸と直交方向に摺動可能に支持する工具取付台と、主軸と対向する位置にワークを固定するワーク固定台とを備え、主軸を回転させながら加工用工具を主軸と直交方向に移動させるとともに、ワークを主軸と平行に移動させてワークに絞り加工を施す絞り加工装置において、工具取付台には、対となる絞りローラと溝加工用ローラとを主軸と直交方向に摺動可能に配設したことを特徴とする。   In addition, the drawing apparatus of the present invention for carrying out the drawing method includes a tool mounting base that supports a machining tool slidably in a direction orthogonal to the spindle at the tip of the spindle, and a workpiece at a position facing the spindle. In a drawing machine that includes a workpiece fixing base for fixing the workpiece, moves the machining tool in a direction orthogonal to the spindle while rotating the spindle, and draws the workpiece by moving the workpiece parallel to the spindle. The base is characterized in that a pair of squeezing rollers and grooving rollers are slidably disposed in a direction perpendicular to the main shaft.

本発明の絞り加工方法及びその装置によれば、ワークを固定し、ワークを主軸と平行に移動させながら、対となる絞りローラを主軸と直交する方向に摺動移動させてワーク先端を縮管するから、高い真円度の絞り加工を行うことができるとともに、絞り加工から溝加工に移る際にツールチェンジをする必要がなく、更にワークを固定しているワーク固定台は回動しないから、主軸回転を止めることなく次のワークの取替を行って加工することができ、絞り加工のサイクルタイムを従来の２６秒に比べ２０秒程度まで大幅に短縮することのできる絞り加工方法及びその装置を提供することができる。   According to the drawing method and apparatus of the present invention, the workpiece is fixed and the workpiece is moved in parallel with the main shaft, while the paired drawing rollers are slid in the direction perpendicular to the main shaft to reduce the tip of the work. Therefore, it is possible to perform drawing with high roundness, there is no need to change the tool when moving from drawing to grooving, and the workpiece fixing base that fixes the workpiece does not rotate, Drawing process method and apparatus capable of machining by replacing the next workpiece without stopping the spindle rotation and greatly reducing the cycle time of the drawing process to about 20 seconds compared to the conventional 26 seconds. Can be provided.

以下、本発明の塑性加工方法の実施の形態を、図面に基づいて説明する。   Hereinafter, embodiments of the plastic working method of the present invention will be described with reference to the drawings.

図１〜２に、本発明の絞り加工方法及びその装置の実施例を示す。   1 and 2 show an embodiment of the drawing method and apparatus of the present invention.

本発明の絞り加工装置１は、架体１０上にモータ等の駆動装置Ｍによって回動可能に配設した主軸２と、該主軸２先端に加工用工具を主軸と直交方向に摺動可能に支持する工具取付台３と、主軸２と対向する位置にワークＷを固定するワーク固定台４とを備え、主軸２に配設する工具取付台３には、対となる絞りローラＲ１と溝加工用ローラＲ２とを配設するようにしている。溝加工用ローラＲ２も絞りローラＲ１と同様に、対となるように２個配設するようにしても構わない。   The drawing apparatus 1 according to the present invention includes a main shaft 2 that is rotatably disposed on a frame 10 by a driving device M such as a motor, and a processing tool that can slide on the tip of the main shaft 2 in a direction orthogonal to the main shaft. A tool mounting base 3 to be supported and a work fixing base 4 for fixing the work W at a position opposite to the main shaft 2 are provided. The tool mounting base 3 disposed on the main shaft 2 has a pair of squeezing roller R1 and groove processing. A roller R2 is provided. Similarly to the squeezing roller R1, two grooving rollers R2 may be arranged in pairs.

絞りローラＲ１と溝加工用ローラＲ２とを主軸と直交方向に移動させる方法は、特に限定するものではないが、例えば、本出願人が先に特開２００１−１３７９６２として出願した、中空の主軸２内に同軸に配設したカム軸先端に取り付けたカム板によって行う公知の方法を用いることが好ましい。
また、主軸２の中心から絞り加工の際の当たり部として、芯金２ａを伸縮自在に延設した例を示すが、本発明の絞り加工装置１では、対向する絞りローラＲ１、Ｒ１によって絞り加工を施すから、芯金２ｂを配設しなくても構わない。 A method for moving the squeezing roller R1 and the groove processing roller R2 in a direction orthogonal to the main shaft is not particularly limited. For example, the hollow main shaft 2 filed by the present applicant as Japanese Patent Application Laid-Open No. 2001-137862 has been filed. It is preferable to use a known method using a cam plate attached to the tip of the cam shaft that is coaxially disposed inside.
Moreover, although the example which extended the cored bar 2a so that expansion and contraction was possible is shown as a contact part in the case of a drawing process from the center of the main axis | shaft 2, in the drawing apparatus 1 of this invention, it draws by opposing drawing roller R1, R1. Therefore, it is not necessary to arrange the cored bar 2b.

ワーク固定台４は、主軸２と平行に移動させるための移動機構５を介して架体１０上に配設する。そして、円筒状のワークＷを把持固定するためのチャック部分４ａ、４ａを対向して設け、一方又は両方のチャック部分４ａをシリンダ等の押圧部材４ｂによって押圧し、ワークＷを固定する。移動機構５は、固定したワークＷを、回転する主軸２に対して相対的に移動させることができればよく、ワーク固定台４を架体上に固定し、主軸２を移動可能に配設するようにしてもよい。   The work fixing base 4 is disposed on the frame 10 via a moving mechanism 5 for moving in parallel with the main shaft 2. Then, chuck portions 4a and 4a for gripping and fixing the cylindrical workpiece W are provided to face each other, and one or both chuck portions 4a are pressed by a pressing member 4b such as a cylinder to fix the workpiece W. The moving mechanism 5 only needs to be able to move the fixed work W relative to the rotating main shaft 2, and the work fixing base 4 is fixed on the frame and the main shaft 2 is movably disposed. It may be.

上記構成の絞り加工装置１を用いて中空円筒状のワークＷの先端を縮管し、縮管部分に溝加工を施す方法を説明する。   A method of shrinking the tip of the hollow cylindrical workpiece W using the drawing device 1 having the above-described configuration and performing groove processing on the reduced tube portion will be described.

まず、ワーク固定台４を主軸２の先端に配設した工具取付台３に干渉しない場所に位置させ、ワークＷを手動又は自動の搬送装置によってワーク固定台４のチャック部分４ａによって把持固定する（図１参照）。   First, the work fixing base 4 is positioned at a place where it does not interfere with the tool mounting base 3 disposed at the tip of the spindle 2, and the work W is gripped and fixed by the chuck portion 4a of the work fixing base 4 by a manual or automatic transfer device ( (See FIG. 1).

そして、駆動装置Ｍによって主軸２を回動させ、対向する絞りローラＲ１、Ｒ１を工具取付台３の半径方向（主軸２の軸芯と直交する方向）に摺動させてワークＷの周面に当接させつつ、ワークＷを主軸２と平行に移動させることによって、図３（ｂ）に示す縮管加工を施すようにする。ワークＷの移動は、ワーク固定台４を主軸２から遠ざかる方向に移動させて行わせている。   Then, the main shaft 2 is rotated by the driving device M, and the opposing squeezing rollers R1, R1 are slid in the radial direction of the tool mounting base 3 (direction perpendicular to the axis of the main shaft 2) to be on the peripheral surface of the workpiece W. The work W is moved in parallel with the main shaft 2 while being brought into contact with each other, so that the contraction processing shown in FIG. The workpiece W is moved by moving the workpiece fixing base 4 in a direction away from the main shaft 2.

次いで、絞りローラＲ１、Ｒ１を拡げ、ワークＷの位置を溝部分の加工位置に併せて移動させた後、溝加工用ローラＲ２を主軸２と直交方向で内側に摺動移動させ、凸部Ｒ２ａを縮管部分に押し当てて溝部Ｗａを加工し、図３（ｃ）に示す溝加工を終了させる。   Next, the squeezing rollers R1 and R1 are expanded and the position of the workpiece W is moved together with the machining position of the groove portion, and then the grooving roller R2 is slid inward in the direction orthogonal to the main shaft 2 to form the convex portion R2a. Is pressed against the contraction tube portion to process the groove portion Wa, and the groove processing shown in FIG.

以上、本発明の絞り加工方法及びその装置について、実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものである。   The drawing method and apparatus of the present invention have been described based on the embodiments. However, the present invention is not limited to the configurations described in the above embodiments, and the configurations are appropriately set within the scope of the invention. Can be changed.

本発明の絞り加工方法及びその装置は、ワークを固定して対となる絞りローラによって絞り加工を施し、ツールチェンジすることなく溝加工を施すことができるという特性を有していることから、高い真円度を要求するワークの絞り加工に適用するだけでなく、短いサイクルタイムを要求する絞り加工にも好適に用いることができる。   The drawing method and apparatus according to the present invention have a characteristic that a workpiece can be fixed by a drawing roller with a pair of drawing rollers, and a groove can be formed without a tool change. Not only can it be applied to drawing of a workpiece that requires roundness, it can also be suitably used for drawing that requires a short cycle time.

本発明の絞り加工装置の概略正面図である。It is a schematic front view of the drawing apparatus of this invention. 本発明の絞り加工装置の工具取付台の正面図である。It is a front view of the tool mounting base of the drawing apparatus of this invention. 本発明の絞り加工装置を使った加工方法を示す説明図で、（ａ）は、絞り加工前の状態を、（ｂ）は、絞り加工後の状態を、（ｃ）は、溝加工終了後の状態を示す。It is explanatory drawing which shows the processing method using the drawing apparatus of this invention, (a) is the state before drawing, (b) is the state after drawing, (c) is after completion | finish of groove processing. Shows the state. 従来の絞り加工装置の概略平面図である。It is a schematic plan view of the conventional drawing apparatus. 従来の絞り加工装置を使った加工方法を示す説明図で、（ａ）は、絞り加工前の状態を、（ｂ）は、絞り加工後の状態を、（ｃ）は、溝加工終了後の状態を示す。It is explanatory drawing which shows the processing method using the conventional drawing apparatus, (a) is the state before drawing, (b) is the state after drawing, (c) is after the end of grooving. Indicates the state.

符号の説明Explanation of symbols

１ 絞り加工装置
２ 主軸
３ 工具取付台
４ ワーク固定台
Ｒ１ 絞りローラ
Ｒ２ 溝加工用ローラ DESCRIPTION OF SYMBOLS 1 Drawing apparatus 2 Spindle 3 Tool mounting base 4 Work fixing base R1 Drawing roller R2 Groove processing roller

Claims (2)

回転する主軸先端に取り付けた工具取付台に加工用工具を主軸と直交方向に摺動可能に配設し、主軸と対向する位置に配設したワーク固定台に固定したワークを前記加工用工具で絞り加工を施す絞り加工方法において、ワークを主軸と平行に移動させながら、工具取付台に取り付けた対となる絞りローラによって縮管工程を行い、次いで、工具取付台に取り付けた溝加工用ローラを縮管工程によって縮管された周端部に押し当て溝部を形成することを特徴とする絞り加工方法。   A machining tool is slidably arranged in a direction perpendicular to the spindle on a tool mount attached to the tip of the rotating spindle, and a workpiece fixed on a workpiece fixing table arranged at a position facing the spindle is used with the machining tool. In the drawing method for drawing, a tube contraction process is performed by a pair of drawing rollers attached to the tool mount while moving the workpiece parallel to the spindle, and then a groove machining roller attached to the tool mount is used. A drawing method characterized in that a pressing groove portion is formed in a peripheral end portion that has been reduced in a contraction step. 主軸先端に加工用工具を主軸と直交方向に摺動可能に支持する工具取付台と、主軸と対向する位置にワークを固定するワーク固定台とを備え、主軸を回転させながら加工用工具を主軸と直交方向に移動させるとともに、ワークを主軸と平行に移動させてワークに絞り加工を施す絞り加工装置において、工具取付台には、対となる絞りローラと溝加工用ローラとを主軸と直交方向に摺動可能に配設したことを特徴とする絞り加工装置。   A spindle is provided with a tool mounting base that supports a machining tool slidably in a direction perpendicular to the spindle at the tip of the spindle, and a workpiece fixing base that fixes a workpiece at a position opposite to the spindle, and the machining tool is rotated while the spindle is rotated. In the drawing device that moves the workpiece parallel to the main axis and draws the workpiece, the tool mounting base has a pair of drawing roller and grooving roller orthogonal to the main shaft. A drawing device characterized by being slidably disposed on the surface.
JP2006115829A 2006-04-19 2006-04-19 Method of squeezing work, and apparatus therefor Pending JP2007283386A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009061513A (en) * 2007-09-04 2009-03-26 Misawa Homes Co Ltd End working machine and working method of butt end
CN103302195A (en) * 2013-06-20 2013-09-18 张家港市明华机械制造有限公司 Clamping mechanism of contracting pipe machine
CN106694721A (en) * 2017-01-16 2017-05-24 上海佳方钢管集团太仓有限公司 Spinning equipment for bell-spigot joint of large-diameter steel pipe and spinning method of spinning equipment
CN109482757A (en) * 2018-12-26 2019-03-19 东莞市旭锐精密五金制品有限公司 Copper pipe beam jaws equipment and beam mouth method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009061513A (en) * 2007-09-04 2009-03-26 Misawa Homes Co Ltd End working machine and working method of butt end
CN103302195A (en) * 2013-06-20 2013-09-18 张家港市明华机械制造有限公司 Clamping mechanism of contracting pipe machine
CN106694721A (en) * 2017-01-16 2017-05-24 上海佳方钢管集团太仓有限公司 Spinning equipment for bell-spigot joint of large-diameter steel pipe and spinning method of spinning equipment
CN106694721B (en) * 2017-01-16 2018-09-25 上海佳方钢管集团太仓有限公司 A kind of spinning machine and its spin-on process of large diameter steel pipe spigot-and-socket joint
CN109482757A (en) * 2018-12-26 2019-03-19 东莞市旭锐精密五金制品有限公司 Copper pipe beam jaws equipment and beam mouth method
CN109482757B (en) * 2018-12-26 2024-02-23 东莞市旭锐精密科技有限公司 Copper tube bundle mouth equipment and bundle mouth method

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