JP2008275482A - Device for measuring interpass temperature, welding method using device for measuring interpass temperature - Google Patents

Device for measuring interpass temperature, welding method using device for measuring interpass temperature Download PDF

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JP2008275482A
JP2008275482A JP2007120289A JP2007120289A JP2008275482A JP 2008275482 A JP2008275482 A JP 2008275482A JP 2007120289 A JP2007120289 A JP 2007120289A JP 2007120289 A JP2007120289 A JP 2007120289A JP 2008275482 A JP2008275482 A JP 2008275482A
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welding
temperature
measuring device
interpass
temperature measuring
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Noriaki Nakanishi
紀晶 中西
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Kobe Steel Ltd
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Kobe Steel Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for measuring an interpass temperature and a welding method using the device for measuring an interpass temperature capable of measuring temperatures right before and after welding in a measurement position apart from a weld line by a certain distance, where the device for measuring the interpass temperature is positioned between welded passes by movement of an arm of a welding robot. <P>SOLUTION: The device for measuring the interpass temperature, which measures a work surface temperature in a located position, is mounted on a welding torch support part on an arm tip end of the welding robot right before welding operation, is located so that a measuring direction turns to a position apart from the weld line by the certain distance vertically to the weld line by the movement of the arm. When a measurement result is below a management prescribed value, welding of a next pass is sequentially continued. When the measurement result exceeds the management prescribed value, one or a plurality of times of temperature measurement is conducted again after a predetermined time passes. The welding of the next pass is restarted at a time point when the measurement result is below the management prescribed value. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、建築用鉄骨柱等の溶接の際に使用されるパス間温度測定装置及びパス間温度測定装置を使用した溶接方法に関する。   TECHNICAL FIELD The present invention relates to an interpass temperature measuring device used in welding a steel column for construction, and a welding method using the interpass temperature measuring device.

建築基準法では、適用鋼種と溶接ワイヤとの組み合わせにより、パス間温度を２５０℃以下、又は、３５０℃以下に管理するよう規定している。よって、溶接ロボットシステムでは、パス間に溶接ロボットを一時停止させ、作業者が所定位置の温度を実測し、管理温度以下になっていることを確認する必要があり、溶接ロボットによる自動溶接の能率低下の原因となっている。   The Building Standard Law stipulates that the interpass temperature is controlled to 250 ° C. or lower or 350 ° C. or lower, depending on the combination of the applicable steel type and the welding wire. Therefore, in the welding robot system, it is necessary to temporarily stop the welding robot between passes, and the operator must actually measure the temperature at a predetermined position and confirm that the temperature is lower than the control temperature. This is the cause of the decline.

例えば特許文献１及び特許文献２に、建築用鉄骨柱の自動溶接方法が開示されている。建築用鉄骨柱としては、例えば、コラム柱、パイプ柱及び連結コラムコア等が挙げられる。   For example, Patent Literature 1 and Patent Literature 2 disclose an automatic welding method for an architectural steel column. Examples of the steel column for building include a column column, a pipe column, and a connecting column core.

しかしながら、特許文献１及び特許文献２に開示された技術は、溶接対象であるワークの表面温度（パス間温度）を管理及び記録するための工夫がなされておらず、溶接直前の温度を管理するためには、溶接ロボットの運転を一時停止させ、作業者が直接パス間温度を計測及び記録し、管理規定値を超えていた場合には、管理規定値以下になったことを確認した後、溶接ロボットを再スタートさせなければならない。このため、昼間に自動溶接運転を開始し、夜間に及んで自動溶接運転が継続する場合には、夜間も作業者がパス間温度を計測及び記録し、管理する必要があり、作業者が不在であれば、自動溶接運転を停止しなければならないという問題点がある。   However, the techniques disclosed in Patent Document 1 and Patent Document 2 are not devised for managing and recording the surface temperature (interpass temperature) of the workpiece to be welded, and manage the temperature immediately before welding. For this purpose, the operation of the welding robot is temporarily stopped, and the operator directly measures and records the temperature between passes, and if it exceeds the management regulation value, confirms that it has become the management regulation value or less, The welding robot must be restarted. For this reason, when automatic welding operation is started in the daytime and automatic welding operation continues at night, it is necessary for the worker to measure, record and manage the temperature between passes at night, and there is no worker. Then, there is a problem that the automatic welding operation must be stopped.

パス間温度の管理方法に関する従来技術としては、例えば特許文献３が挙げられる。   As a prior art regarding the management method of the temperature between passes, patent document 3 is mentioned, for example.

特開平６−２８５６３７号公報JP-A-6-285637 特開２０００−７９４７１号公報JP 2000-79471 A 特開２００５−４６８４８号公報JP 2005-46848 A

しかしながら、特許文献３に開示された技術は、作業者によるパス間温度計測を前提にしており、作業者が不在であれば、自動溶接運転を停止しなければならないという問題点がある。   However, the technique disclosed in Patent Document 3 is premised on temperature measurement between passes by an operator, and there is a problem that if the operator is absent, the automatic welding operation must be stopped.

本発明はかかる問題点に鑑みてなされたものであって、溶接パス間に溶接ロボットのアームの移動によってパス間温度測定装置が位置決めされ、溶接線から一定距離離れた計測位置における溶接直前及び直後の温度計測が可能であるパス間温度測定装置及びパス間温度測定装置を使用した溶接方法を提供することを目的とする。   The present invention has been made in view of such problems, and the inter-pass temperature measuring device is positioned by the movement of the arm of the welding robot between the welding passes, and immediately before and immediately after the welding at a measurement position separated from the welding line by a certain distance. It is an object of the present invention to provide an interpass temperature measuring device capable of measuring the temperature of the above and a welding method using the interpass temperature measuring device.

本発明に係るパス間温度測定装置は、溶接ロボットのアーム先端の溶接トーチ支持部に取り付けられ、溶接パス間に前記アームの移動により、その計測方向が溶接線からこの溶接線に垂直方向に一定距離離れた位置に向かうように位置決めされ、この位置決めされた位置のワーク表面温度を計測することを特徴とする。   The inter-pass temperature measuring device according to the present invention is attached to a welding torch support at the tip of an arm of a welding robot, and the measurement direction is constant from the welding line to the welding line by moving the arm between the welding passes. It is positioned so as to go to a position separated by a distance, and the workpiece surface temperature at the positioned position is measured.

パス間温度測定装置を溶接ロボットのアーム先端の溶接トーチ支持部に取り付け、溶接トーチのアーク点（溶接位置）とパス間温度測定装置の計測位置とを一定の距離及び角度を有するように固定することにより、溶接ロボットにパス間温度測定装置の計測位置を教示すれば、溶接ロボットで、この計測位置を高精度で位置決めすることができ、この計測位置のワーク表面温度を計測することで、溶接線から一定距離離れた計測位置における溶接直前及び直後の温度計測を行うことができる。   The interpass temperature measuring device is attached to the welding torch support at the tip of the arm of the welding robot, and the arc point (welding position) of the welding torch and the measuring position of the interpass temperature measuring device are fixed so as to have a certain distance and angle. Thus, if the welding robot is instructed of the measurement position of the inter-pass temperature measuring device, the welding robot can position the measurement position with high accuracy, and the workpiece surface temperature at this measurement position can be measured. Temperature measurement immediately before and after welding at a measurement position away from the line by a certain distance can be performed.

前記ワーク表面温度を計測する計測部は、非接触式の放射式温度センサであり、溶接中は前記センサがエアシールド又は他の手段により周囲からシールドされることが好ましい。   The measurement unit for measuring the workpiece surface temperature is a non-contact type radiation temperature sensor, and it is preferable that the sensor is shielded from the surroundings by an air shield or other means during welding.

本発明に係るパス間温度測定装置は、前記ワーク表面温度の計測結果を記録及び保存する記憶部を有していてもよい。   The interpass temperature measuring device according to the present invention may include a storage unit that records and stores the measurement result of the workpiece surface temperature.

本発明に係るパス間温度測定装置を使用した溶接方法は、溶接作業の直前に、パス間温度測定装置によりワーク表面温度を計測し、この計測結果が管理規定値以下の場合は、連続して次パスの溶接を続行し、前記計測結果が前記管理規定値を超えている場合は、所定時間経過後、再度、１又は複数回温度計測を行い、前記計測結果が前記管理規定値以下になった時点で次パスの溶接を再開することを特徴とする。   In the welding method using the interpass temperature measuring device according to the present invention, the workpiece surface temperature is measured by the interpass temperature measuring device immediately before the welding operation. If welding of the next pass is continued and the measurement result exceeds the control specified value, the temperature measurement is performed again one or more times after a predetermined time, and the measurement result falls below the control specified value. The welding of the next pass is resumed at the point of time.

前記管理規定値は、２５０℃又は３５０℃を選択するか若しくは任意温度に設定することができることが望ましい。   It is desirable that the specified management value can be selected from 250 ° C. or 350 ° C. or set to an arbitrary temperature.

本発明によれば、パス間温度測定装置を溶接ロボットのアーム先端の溶接トーチ支持部に取り付け、溶接トーチの溶接位置とパス間温度測定装置の計測位置とを一定の距離及び角度を有するように固定することにより、溶接ロボットにパス間温度測定装置の計測位置を教示すれば、溶接ロボットで、この計測位置を精確に位置決めすることができ、この計測位置のワーク表面温度を計測することで、溶接線から一定距離離れた計測位置における溶接直前及び直後の温度計測を行うことができる。   According to the present invention, the interpass temperature measuring device is attached to the welding torch support at the tip of the arm of the welding robot so that the welding position of the welding torch and the measured position of the interpass temperature measuring device have a certain distance and angle. By fixing, if the welding robot is taught the measurement position of the inter-pass temperature measurement device, the welding robot can accurately position this measurement position, and by measuring the workpiece surface temperature at this measurement position, Temperature measurement immediately before and after welding at a measurement position that is a certain distance away from the weld line can be performed.

以下、本発明の実施形態について添付の図面を参照して具体的に説明する。先ず、本発明の第１実施形態について説明する。図１は本実施形態に係るパス間温度測定装置１が取り付けられた溶接トーチ支持部を有する溶接ロボットのアームの模式的正面図、図２は溶接時における溶接ロボットのアームの模式的正面図、図３はパス間温度計測時における溶接ロボットのアームの模式的正面図である。   Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. First, a first embodiment of the present invention will be described. FIG. 1 is a schematic front view of an arm of a welding robot having a welding torch support portion to which an interpass temperature measuring device 1 according to the present embodiment is attached, and FIG. 2 is a schematic front view of the arm of the welding robot during welding. FIG. 3 is a schematic front view of the arm of the welding robot when measuring the temperature between passes.

本実施形態に係るパス間温度測定装置１は、図１に示すように、温度センサヘッド２及びカバー３を有している。図１乃至４に示すように、溶接ロボットの回動可能なアーム１４に設けられたトーチ取付金具４にトーチ取付金具５が連結され、このトーチ取付金具５にショックセンサ６が取り付けられ、このショックセンサ６に丸棒押さえ７によってトーチ取付台８がネジ止めされ、このトーチ取付台８にパワーケーブル（図示せず）を支持するバネ１３及びトーチ取付金具９がネジ止めされ、このトーチ取付金具９に、溶接トーチ１０を保持した状態でトーチクランプ１１及び１２によって構成される溶接トーチ支持部がネジ止めされている。そして、トーチクランプ１２には、パス間温度測定装置１のカバー３が共締めされている。これにより、本実施形態に係るパス間温度測定装置１が溶接ロボットの溶接トーチ支持部に取り付けられている。   The inter-pass temperature measuring apparatus 1 according to the present embodiment includes a temperature sensor head 2 and a cover 3 as shown in FIG. As shown in FIGS. 1 to 4, a torch mounting bracket 5 is connected to a torch mounting bracket 4 provided on a rotatable arm 14 of the welding robot, and a shock sensor 6 is mounted on the torch mounting bracket 5. A torch mounting base 8 is screwed to the sensor 6 by a round bar retainer 7, and a spring 13 and a torch mounting bracket 9 for supporting a power cable (not shown) are screwed to the torch mounting base 8. In addition, the welding torch support portion constituted by the torch clamps 11 and 12 while the welding torch 10 is held is screwed. The cover 3 of the inter-pass temperature measuring device 1 is fastened to the torch clamp 12 together. Thereby, the interpass temperature measuring apparatus 1 which concerns on this embodiment is attached to the welding torch support part of the welding robot.

図１に示すように、溶接トーチ１０のアーク点（溶接位置）とパス間温度測定装置１の計測位置とは一定の距離（図示例では１４６ｍｍ）及び一定の角度（図示例では３５°）を有するように固定されている。   As shown in FIG. 1, the arc point (welding position) of the welding torch 10 and the measurement position of the interpass temperature measuring device 1 have a fixed distance (146 mm in the illustrated example) and a fixed angle (35 ° in the illustrated example). It is fixed to have.

次に、上述の如く構成された本実施形態に係るパス間温度測定装置１の動作について説明する。図２に示すように、溶接時は、溶接ロボットのアーム１４が移動し、溶接トーチ１０のアーク点（溶接位置）がワーク１５及び１６の溶接すべき部位に移動する。そして、溶接ロボットのアーム１４が溶接線方向に移動すると共に溶接トーチ１０のアーク点が溶接線に沿って移動する。   Next, the operation of the inter-pass temperature measuring apparatus 1 according to this embodiment configured as described above will be described. As shown in FIG. 2, during welding, the arm 14 of the welding robot moves, and the arc point (welding position) of the welding torch 10 moves to the parts to be welded of the workpieces 15 and 16. Then, the arm 14 of the welding robot moves in the welding line direction, and the arc point of the welding torch 10 moves along the welding line.

そして、溶接後、図３に示すように、溶接ロボットのアーム１４が回動し、パス間温度測定装置１が、その計測方向が溶接線からこの溶接線に垂直方向に一定距離離れた位置に向かうように位置決めされる。パス間温度測定装置１は、この計測位置のワーク表面温度を計測し、必要に応じてこの計測値を記録及び保存する。   After welding, as shown in FIG. 3, the arm 14 of the welding robot rotates, and the interpass temperature measuring device 1 is positioned at a position where the measurement direction is a certain distance away from the weld line in a direction perpendicular to the weld line. Positioned to face. The interpass temperature measuring device 1 measures the workpiece surface temperature at this measurement position, and records and saves the measured value as necessary.

本実施形態に係るパス間温度測定装置１は、溶接ロボットのアーム１４先端の溶接トーチ支持部に取り付けられ、溶接トーチ１０のアーク点とパス間温度測定装置１の計測位置とが一定の距離（図示例では１４６ｍｍ）及び角度（図示例では３５°）に固定されていることにより、溶接ロボットにパス間温度測定装置１の計測位置を予め教示しておくことで、パス間温度測定装置１の計測位置を精確に位置決めすることができ、この計測位置において、溶接直前及び直後の温度計測が可能である。   The interpass temperature measuring device 1 according to the present embodiment is attached to a welding torch support at the tip of an arm 14 of a welding robot, and the arc point of the welding torch 10 and the measurement position of the interpass temperature measuring device 1 are at a certain distance ( (146 mm in the illustrated example) and an angle (35 ° in the illustrated example) are fixed to each other, and the measurement position of the interpass temperature measuring device 1 is previously taught to the welding robot, so that the interpass temperature measuring device 1 The measurement position can be accurately positioned, and temperature measurement immediately before and after welding is possible at this measurement position.

例えば、パス間温度測定装置が溶接トーチ支持部に取り付けられていない場合、溶接ロボットによってパス間温度測定装置の計測位置を位置決めする場合には、溶接トーチを温度測定装置と交換する作業が必要であり、ツール自動交換装置を使用したとしても、その交換動作時間内は温度計測ができない。また、ツール交換装置が必要であり、経済的ではない。   For example, when the interpass temperature measuring device is not attached to the welding torch support part, when the measurement position of the interpass temperature measuring device is positioned by the welding robot, it is necessary to replace the welding torch with the temperature measuring device. Yes, even if an automatic tool changer is used, temperature cannot be measured within the change operation time. In addition, a tool changer is required, which is not economical.

また、パス間温度測定装置を計測位置に移動させるときに溶接ロボットを使用しない場合、パス間温度測定装置を計測位置に移動させ、溶接時に退避させる等の動作を行う装置が別途必要になり、設備の大型化は避けがたく、経済的ではない。   In addition, if the welding robot is not used when moving the interpass temperature measurement device to the measurement position, a device that moves the interpass temperature measurement device to the measurement position and retreats during welding is required. Increasing the size of the equipment is unavoidable and not economical.

また、ワークに固定してパス間温度測定装置を取り付ける場合、複数個の継手毎に都度パス間温度測定装置を取り付ける必要があるため、段取り時間がかかる。   In addition, when the inter-pass temperature measuring device is fixed to the work and attached, it is necessary to attach the inter-pass temperature measuring device for each of a plurality of joints.

また、ワークに直接熱電対等の接触式温度測定装置を取り付ける場合、ワークは回転しながら溶接されるため、ケーブル処理が困難である。また、開先近傍は溶接トーチとの干渉が発生するため、接触式温度測定装置の取り付け及び取り外しが必要になり、溶接作業の自動化の割合が減少する。また、接触式温度測定装置を溶接トーチと干渉しない位置に設置すると、開先から所定距離離れた（例えば３０ｍｍ以上）位置に設置することになり、高精度の温度計測ができない。   In addition, when a contact type temperature measuring device such as a thermocouple is directly attached to the workpiece, the workpiece is welded while rotating, so that cable processing is difficult. Further, since interference with the welding torch occurs in the vicinity of the groove, it is necessary to attach and detach the contact-type temperature measuring device, and the ratio of automation of the welding operation is reduced. If the contact temperature measuring device is installed at a position where it does not interfere with the welding torch, it will be installed at a position away from the groove by a predetermined distance (for example, 30 mm or more), and high-precision temperature measurement cannot be performed.

本実施形態に係るパス間温度測定装置１は、溶接ロボットのアーム１４先端の溶接トーチ支持部に取り付けられ、溶接トーチ１０のアーク点とパス間温度測定装置１の計測位置とが一定の距離（図示例では１４６ｍｍ）及び角度（図示例では３５°）に固定されていることにより、溶接ロボットにパス間温度測定装置１の計測位置を予め教示しておくことで、パス間温度測定装置１の計測位置を、パス間温度測定装置１の計測方向が溶接線から溶接線に垂直方向に一定距離離れた位置に正確に位置決めすることができ、この計測位置において、溶接直前及び直後の温度計測が可能であるため、上述の全ての問題点を解決することができる。   The interpass temperature measuring device 1 according to the present embodiment is attached to a welding torch support at the tip of an arm 14 of a welding robot, and the arc point of the welding torch 10 and the measurement position of the interpass temperature measuring device 1 are at a certain distance ( (146 mm in the illustrated example) and an angle (35 ° in the illustrated example) are fixed to each other, and the measurement position of the interpass temperature measuring device 1 is previously taught to the welding robot, so that the interpass temperature measuring device 1 The measurement position can be accurately positioned at a position where the measurement direction of the interpass temperature measuring device 1 is a certain distance away from the weld line in the direction perpendicular to the weld line. At this measurement position, the temperature measurement immediately before and after welding is performed. Since it is possible, all the above-mentioned problems can be solved.

次に、本発明の第２実施形態について説明する。本実施形態は、上述の本発明の第１実施形態に係るパス間温度測定装置１を使用した溶接方法の実施形態である。図４は本実施形態に係るパス間温度測定装置１を使用した溶接方法のフローを示す図である。   Next, a second embodiment of the present invention will be described. The present embodiment is an embodiment of a welding method using the interpass temperature measuring device 1 according to the first embodiment of the present invention described above. FIG. 4 is a diagram showing a flow of a welding method using the interpass temperature measuring device 1 according to the present embodiment.

本実施形態に係るパス間温度測定装置１を使用した溶接方法は、図４に示すように、まず、ロボット溶接を開始する（ステップＳ１）。そして、予めオペレータにより溶接ロボットの設定部に設定された管理規定値、及び、管理規定値を超えている場合に再度温度計測を行うまでの所定時間の設定値を読み出す。管理規定値は、２５０℃又は３５０℃を選択するか若しくは任意温度に設定できる（ステップＳ２）。次に、溶接ロボットに温度計測時のパス間温度測定装置１の計測位置を教示し、温度計測姿勢にする実行プログラムを作成する（ステップＳ３）。そして、溶接後に溶接ロボットの実行プログラムによってアーム１４を回動させ、パス間温度測定装置１を計測位置に位置決めする。そして、パス間温度測定装置１によって温度計測を行い、この計測結果をパス間温度測定装置１の記憶部に記憶する（ステップＳ４）。ステップＳ４における温度計測の計測結果がステップＳ２で設定された管理規定値を超えている場合（ステップＳ５）、予め設定された所定時間経過後、再度温度計測を行う（ステップＳ４）。このようにして、ステップＳ４から繰り返す。ステップＳ４における温度計測の計測結果がステップＳ２で設定された管理規定値以下の場合（ステップＳ５）、前パス溶接終了から次パス溶接開始までの時間を記憶し（ステップＳ６）、次パスの溶接を再開する（ステップ７）。   In the welding method using the interpass temperature measuring device 1 according to the present embodiment, robot welding is first started as shown in FIG. 4 (step S1). Then, the management specified value set in advance in the setting unit of the welding robot by the operator and the set value for a predetermined time until the temperature measurement is performed again when the management specified value is exceeded are read out. As the management specified value, 250 ° C. or 350 ° C. can be selected or set to an arbitrary temperature (step S2). Next, the measurement position of the interpass temperature measuring device 1 at the time of temperature measurement is taught to the welding robot, and an execution program for making a temperature measurement posture is created (step S3). Then, after welding, the arm 14 is rotated by the execution program of the welding robot to position the interpass temperature measuring device 1 at the measurement position. Then, the temperature is measured by the interpass temperature measuring device 1, and the measurement result is stored in the storage unit of the interpass temperature measuring device 1 (step S4). When the measurement result of the temperature measurement in step S4 exceeds the management specified value set in step S2 (step S5), the temperature measurement is performed again after a predetermined time has elapsed (step S4). Thus, it repeats from step S4. If the measurement result of the temperature measurement in step S4 is equal to or less than the control specified value set in step S2 (step S5), the time from the end of the previous pass welding to the start of the next pass welding is stored (step S6), and the next pass welding is performed. Is resumed (step 7).

これにより、従来技術において、作業者が溶接直前及び直後の温度を管理しなければならず、作業者が不在であれば、自動溶接運転を停止しなければならないという問題点を解決することができる。また、溶接直前の温度を管理するために、溶接ロボットの運転を一時停止させ、作業者が直接パス間温度を計測及び記録し、管理規定値を超えていた場合には、管理規定値以下になったことを確認した後、溶接ロボットを再スタートさせなければならないという問題点を解決することができる。   Thereby, in the prior art, it is possible to solve the problem that the operator must manage the temperature immediately before and after welding, and if the worker is absent, the automatic welding operation must be stopped. . Also, in order to manage the temperature immediately before welding, the operation of the welding robot is temporarily stopped, and the operator directly measures and records the temperature between passes, and if it exceeds the management regulation value, it will be below the management regulation value. After confirming that it has become, the problem that the welding robot has to be restarted can be solved.

本発明の第１実施形態に係るパス間温度測定装置１が取り付けられた溶接トーチ支持部を有する溶接ロボットのアームの模式的正面図である。It is a typical front view of the arm of the welding robot which has the welding torch support part to which the interpass temperature measuring device 1 which concerns on 1st Embodiment of this invention was attached. 溶接時における溶接ロボットのアームの模式的正面図である。It is a typical front view of the arm of the welding robot at the time of welding. パス間温度計測時における溶接ロボットのアームの模式的正面図である。It is a typical front view of the arm of the welding robot at the time of temperature measurement between passes. 本発明の第２実施形態に係るパス間温度測定装置１を使用した溶接方法のフローを示す図である。It is a figure which shows the flow of the welding method using the interpass temperature measuring apparatus 1 which concerns on 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１；パス間温度測定装置
２；温度センサヘッド
３；カバー
４；トーチ取付金具
５；トーチ取付金具
６；ショックセンサ
７；丸棒押さえ
８；トーチ取付台
９；トーチ取付金具
１０；溶接トーチ
１１；トーチクランプ
１２；トーチクランプ
１３；バネ
１４；アーム
１５；ワーク
１６；ワーク DESCRIPTION OF SYMBOLS 1; Interpass temperature measuring device 2; Temperature sensor head 3; Cover 4; Torch mounting bracket 5; Torch mounting bracket 6; Shock sensor 7; Round bar presser 8; Torch mounting base 9; Torch mounting bracket 10; Torch clamp 12; torch clamp 13; spring 14; arm 15; work 16;

Claims (5)

溶接ロボットのアーム先端の溶接トーチ支持部に取り付けられ、溶接パス間に前記アームの移動により、その計測方向が溶接線からこの溶接線に垂直方向に一定距離離れた位置に向かうように位置決めされ、この位置決めされた位置のワーク表面温度を計測することを特徴とするパス間温度測定装置。 It is attached to the welding torch support part at the tip of the arm of the welding robot, and by the movement of the arm between the welding passes, the measurement direction is positioned so as to go to a position away from the welding line by a certain distance in the direction perpendicular to the welding line, An interpass temperature measuring device that measures the workpiece surface temperature at the positioned position. 前記ワーク表面温度を計測する計測部は、非接触式の放射式温度センサであり、溶接中は前記センサがエアシールド又は他の手段により周囲からシールドされることを特徴とする請求項１に記載のパス間温度測定装置。 The measurement unit for measuring the workpiece surface temperature is a non-contact type radiation temperature sensor, and the sensor is shielded from the surroundings by an air shield or other means during welding. Interpass temperature measuring device. 前記ワーク表面温度の計測結果を記録及び保存する記憶部を有することを特徴とする請求項１又は２に記載のパス間温度測定装置。 The interpass temperature measuring device according to claim 1, further comprising a storage unit that records and stores the measurement result of the workpiece surface temperature. 溶接作業の直前に、請求項１乃至３のいずれか１項に記載のパス間温度測定装置によりワーク表面温度を計測し、この計測結果が管理規定値以下の場合は、連続して次パスの溶接を続行し、前記計測結果が前記管理規定値を超えている場合は、所定時間経過後、再度、１又は複数回温度計測を行い、前記計測結果が前記管理規定値以下になった時点で次パスの溶接を再開することを特徴とするパス間温度測定装置を使用した溶接方法。 Immediately before the welding operation, the workpiece surface temperature is measured by the inter-pass temperature measuring device according to any one of claims 1 to 3, and if this measurement result is less than the control specified value, the next pass is continuously measured. When welding is continued and the measurement result exceeds the control specified value, the temperature is measured once or a plurality of times again after a predetermined time has elapsed, and when the measurement result falls below the control specified value. Welding method using interpass temperature measuring device, characterized by resuming welding of next pass. 前記管理規定値は、２５０℃又は３５０℃を選択するか若しくは任意温度に設定することができることを特徴とする請求項４に記載のパス間温度測定装置を使用した溶接方法。 5. The welding method using the interpass temperature measuring device according to claim 4, wherein the specified management value can be set to 250 ° C. or 350 ° C. or set to an arbitrary temperature.
JP2007120289A 2007-04-27 2007-04-27 Device for measuring interpass temperature, welding method using device for measuring interpass temperature Pending JP2008275482A (en)

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