JP7069451B2 - Spot welding electrode polishing device and spot welding electrode polishing method - Google Patents

Spot welding electrode polishing device and spot welding electrode polishing method Download PDF

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JP7069451B2
JP7069451B2 JP2017071517A JP2017071517A JP7069451B2 JP 7069451 B2 JP7069451 B2 JP 7069451B2 JP 2017071517 A JP2017071517 A JP 2017071517A JP 2017071517 A JP2017071517 A JP 2017071517A JP 7069451 B2 JP7069451 B2 JP 7069451B2
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信浩 古瀬
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Daihatsu Motor Co Ltd
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Description

本発明は、スポット溶接用電極の研磨装置に関する。 The present invention relates to an apparatus for polishing electrodes for spot welding.

スポット溶接に用いられる電極は、溶接作業時に高温状態で加圧力がかかるとともに大電流が流れるため、使用するうちに先端が摩耗して平坦部分が形成されたり、溶接対象物の金属成分が付着したりする。この状態のまま溶接作業を続けると、電流密度が低下して所定のジュール熱を得ることができなくなり、溶接不良を引き起こす。このような電極の劣化による溶接不良を防ぐため、電極の先端部を所定の曲面形状に戻すべく、一定周期毎に電極先端を切削研磨している。 Electrodes used for spot welding are subject to pressure in a high temperature state during welding work and a large current flows, so the tip wears and flat parts are formed during use, and metal components of the welding object adhere. Or. If the welding work is continued in this state, the current density decreases and a predetermined Joule heat cannot be obtained, which causes welding failure. In order to prevent welding defects due to such deterioration of the electrode, the tip of the electrode is cut and polished at regular intervals in order to return the tip of the electrode to a predetermined curved surface shape.

電極先端の研磨は、溶接ロボットの近くに配置された研磨装置を使用して行われる（例えば特許文献１を参照）。研磨装置は、例えば電極先端部を嵌入可能な凹み部にカッターが装着されたカッターホルダを有する。電極研磨の際には、溶接ガン先端に設けられた一対の電極で上記カッターホルダを押し付けて挟みながら、当該カッターホルダをモータの駆動力によって回転させる。研磨装置は、イコライズ機構により上下移動可能とされている。 Polishing of the electrode tip is performed using a polishing device arranged near the welding robot (see, for example, Patent Document 1). The polishing device has, for example, a cutter holder in which a cutter is mounted in a recess into which an electrode tip can be fitted. When polishing the electrodes, the cutter holder is pressed and sandwiched by a pair of electrodes provided at the tip of the welding gun, and the cutter holder is rotated by the driving force of the motor. The polishing device can be moved up and down by an equalizing mechanism.

電極研磨作業時には、一対の電極の先端部がカッターにより同時に切削され、当該一対の電極の先端部が略均等な加圧のもとで切削される。その一方、例えば一対の電極それぞれの溶接作業に伴う摩耗量について、例えば上下の電極形状差や溶接電源方式の差等によって、摩耗量に違いが出る場合がある。このような場合に一対の電極の先端部に対して略均等な研磨を施したのでは、摩耗量が少ない方の電極については、適正な研磨量を超えた無駄な切削となり、電極の使用寿命が縮むおそれがあった。 During the electrode polishing operation, the tips of the pair of electrodes are simultaneously cut by the cutter, and the tips of the pair of electrodes are cut under substantially uniform pressure. On the other hand, for example, the amount of wear associated with the welding work of each pair of electrodes may differ due to, for example, the difference in the shape of the upper and lower electrodes, the difference in the welding power supply method, and the like. In such a case, if the tips of the pair of electrodes are polished substantially evenly, the electrode with the smaller amount of wear will be wasted cutting exceeding the appropriate amount of polishing, and the useful life of the electrodes will be exceeded. Was in danger of shrinking.

特開２００１－２８７０４６号公報Japanese Unexamined Patent Publication No. 2001-287046

本発明は、上記した事情のもとで考え出されたものであって、一対の電極の研磨作業時時に各電極について個別に研磨量を調整するのに適したスポット溶接用電極の研磨装置を提供することを主たる課題とする。 The present invention has been conceived under the above circumstances, and provides a spot welding electrode polishing device suitable for individually adjusting the polishing amount of each electrode during polishing work of a pair of electrodes. The main issue is to provide.

上記の課題を解決するため、本発明では、次の技術的手段を採用した。 In order to solve the above problems, the following technical means are adopted in the present invention.

本発明によって提供されるスポット溶接用電極の研磨装置は、ベース体と、上記ベース体に対して上下方向に摺動可能に支持された支持体と、上記支持体に回転可能に支持され、カッターが装着されたカッターホルダと、上記支持体を挟んで上下に設けられ、一方が上記支持体の上部と上記ベース体に連結され、かつ他方が上記支持体の下部と上記ベース体に連結された一対のばね部材と、を備え、溶接ガンの先端に設けられた一対の電極により上記カッターホルダを挟みながらカッターホルダを回転させて上記一対の電極を研磨する、スポット溶接用電極の研磨装置であって、上記一対の電極による上記カッターホルダへの加圧力よりも上記各ばね部材による反力が大とされていることを特徴としている。 The spot welding electrode polishing device provided by the present invention includes a base body, a support body slidably supported in the vertical direction with respect to the base body body, and a cutter rotatably supported by the support body. Was provided on the upper and lower sides of the support, one of which was connected to the upper part of the support and the base body, and the other was connected to the lower part of the support and the base body. It is a spot welding electrode polishing device that includes a pair of spring members and rotates the cutter holder while sandwiching the cutter holder with a pair of electrodes provided at the tip of the welding gun to polish the pair of electrodes. Therefore, the reaction force of each of the spring members is larger than the pressure applied to the cutter holder by the pair of electrodes.

本発明のその他の特徴および利点は、添付図面を参照して以下に行う詳細な説明によって、より明らかとなろう。 Other features and advantages of the invention will be more apparent by the detailed description given below with reference to the accompanying drawings.

本発明に係るスポット溶接用電極の研磨装置の一例を示す概略構成図である。It is a schematic block diagram which shows an example of the polishing apparatus of the electrode for spot welding which concerns on this invention. 図１の部分拡大図である。It is a partially enlarged view of FIG. スポット溶接用電極が搭載された溶接ロボットの一例を示す概略図である。It is a schematic diagram which shows an example of the welding robot equipped with the electrode for spot welding. 図１に示す研磨装置の使用状態を説明するための図である。It is a figure for demonstrating the use state of the polishing apparatus shown in FIG. 図１に示す研磨装置の使用状態を説明するための図である。It is a figure for demonstrating the use state of the polishing apparatus shown in FIG.

以下、本発明の好ましい実施形態につき、図面を参照しつつ具体的に説明する。 Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

図１は、本発明に係るスポット溶接用電極の研磨装置の一例を示している。図１に示した研磨装置Ａ１は、ベース体１と、支持体２と、一対のばね部材３１，３２とカッターホルダ４と、を備えている。ベース体１は、通常、床面上に配置される支柱５に取り付けられている。ベース体１は、上下一対の横板部１１，１２、およびこれらの基端部どうしをつなぐ縦板部１３を有する。横板部１１，１２の先端部には、上下方向に延びる円柱状または円筒状のシャフト部材１４の両端が連結されている。 FIG. 1 shows an example of a spot welding electrode polishing device according to the present invention. The polishing apparatus A1 shown in FIG. 1 includes a base body 1, a support body 2, a pair of spring members 31, 32, and a cutter holder 4. The base body 1 is usually attached to a support column 5 arranged on the floor surface. The base body 1 has a pair of upper and lower horizontal plate portions 11 and 12, and a vertical plate portion 13 connecting these base end portions. Both ends of a cylindrical or cylindrical shaft member 14 extending in the vertical direction are connected to the tips of the horizontal plate portions 11 and 12.

支持体２は、その基端部において上下方向に貫通する貫通孔（図示略）が形成されており、当該貫通孔に上記シャフト部材１４が嵌挿されている。これにより、支持体２は、ベース体１に対して上下方向に摺動可能に支持されており、後述する電極６によって加圧しても傾斜しないように水平姿勢が維持される。 The support 2 has a through hole (not shown) that penetrates in the vertical direction at the base end portion thereof, and the shaft member 14 is fitted into the through hole. As a result, the support 2 is slidably supported in the vertical direction with respect to the base body 1, and the horizontal posture is maintained so that the support 2 does not tilt even when pressurized by the electrode 6 described later.

一対のばね部材３１，３２は、支持体２を挟んで上下に設けられている。ばね部材３１は、支持体２の上部と横板部１１に連結されている。ばね部材３２は、支持体２の下部と横板部１２に連結されている。 The pair of spring members 31, 32 are provided above and below with the support 2 interposed therebetween. The spring member 31 is connected to the upper portion of the support 2 and the horizontal plate portion 11. The spring member 32 is connected to the lower portion of the support 2 and the horizontal plate portion 12.

カッターホルダ４は、垂直方向に沿う回転軸線Ｏｘ回りに回転可能な状態で支持体２に支持されている。カッターホルダ４は、支持体２に支持されたモータ２１により回転させられる。モータ２１が回転すると、当該モータ２１の回転駆動力は支持体２内の動力伝達機構（図示略）を介してカッターホルダ４に伝達される。本実施形態において、支持体２は、いわゆるギアケースとして機能する。 The cutter holder 4 is supported by the support 2 in a state of being rotatable around the rotation axis Ox along the vertical direction. The cutter holder 4 is rotated by a motor 21 supported by the support 2. When the motor 21 rotates, the rotational driving force of the motor 21 is transmitted to the cutter holder 4 via a power transmission mechanism (not shown) in the support 2. In this embodiment, the support 2 functions as a so-called gear case.

カッターホルダ４は、スポット溶接用電極としての一対の電極６，６の研磨作業時において、当該一対の電極６，６により挟まれるものである。一対の電極６，６は、主要部が概略円柱状であるとともに、先端部が先細り曲面形状とされている。図２に示すように、カッターホルダ４は、これら一対の電極６，６の各先端部が嵌入可能な一対の凹み部４１を有する。一対の凹み部４１は、一方が上方を向き、かつ他方が下方を向いており、各々、電極６の先端部に対応する凹曲面形状とされており、研磨の際のガイドとして機能する。 The cutter holder 4 is sandwiched between the pair of electrodes 6 and 6 during the polishing operation of the pair of electrodes 6 and 6 as spot welding electrodes. The main portion of the pair of electrodes 6 and 6 is substantially columnar, and the tip portion has a tapered curved surface shape. As shown in FIG. 2, the cutter holder 4 has a pair of recessed portions 41 into which the tips of the pair of electrodes 6 and 6 can be fitted. One of the pair of recessed portions 41 faces upward and the other faces downward, and each has a concave curved surface shape corresponding to the tip end portion of the electrode 6, and functions as a guide during polishing.

カッターホルダ４には、電極６の先端を切削研磨するためのカッター４２が装着されている。カッター４２は、電極６の先端形状に対応する概略円弧形状の刃部４２ａを有する。刃部４２ａは、凹み部４１の表面よりも僅かに突出している。 A cutter 42 for cutting and polishing the tip of the electrode 6 is mounted on the cutter holder 4. The cutter 42 has a blade portion 42a having a substantially arc shape corresponding to the tip shape of the electrode 6. The blade portion 42a slightly protrudes from the surface of the recessed portion 41.

スポット溶接用電極（一対の電極６，６）は、例えば溶接ロボットに搭載されている。図３は、スポット溶接用電極が搭載された溶接ロボットの一例を示す概略図である。溶接ロボットＢ１は、複数のアーム部７１が互いに所定の回動軸回りに回動可能に連結された可動アーム７を有し、この可動アーム７の先端に溶接ガン８が支持されている。スポット溶接用電極（一対の電極６，６）は、溶接ガン８の先端に対向するように配されている。 The spot welding electrodes (pair of electrodes 6, 6) are mounted on, for example, a welding robot. FIG. 3 is a schematic view showing an example of a welding robot equipped with a spot welding electrode. The welding robot B1 has a movable arm 7 in which a plurality of arm portions 71 are rotatably connected to each other around a predetermined rotation axis, and a welding gun 8 is supported at the tip of the movable arm 7. The spot welding electrodes (pair of electrodes 6, 6) are arranged so as to face the tip of the welding gun 8.

一対の電極６，６について、下方に位置するものは溶接ガン８先端に固定された固定電極であり、上方に位置するものは、サーボモータ９により固定電極に対して近接ないし離反するように相対移動可能とされた可動電極である。溶接作業時において、一対の電極６，６により溶接対象物（ワーク）を所定の加圧力で挟みつつ一対の電極６，６間に所定値の溶接電流が流れる。なお、図３に示すように、研磨装置Ａ１は、溶接ロボットＢ１の近くに配置されている。 Regarding the pair of electrodes 6 and 6, the one located below is the fixed electrode fixed to the tip of the welding gun 8, and the one located above is relative to the fixed electrode by the servomotor 9 so as to be close to or separated from the fixed electrode. It is a movable electrode that can be moved. At the time of welding work, a predetermined value of welding current flows between the pair of electrodes 6 and 6 while sandwiching the object to be welded (work) by the pair of electrodes 6 and 6 with a predetermined pressing force. As shown in FIG. 3, the polishing device A1 is arranged near the welding robot B1.

溶接ロボットＢ１の駆動制御は、図示しないロボット制御盤により行う。当該ロボット制御盤は、研磨装置Ａ１の駆動制御も行う。例えば溶接作業時には、ロボット制御盤から溶接ロボットＢ１へ制御信号が出力されつつ、各種センサ等による検出信号がロボット制御盤に入力される。また、研磨作業時には、ロボット制御盤から溶接ロボットＢ１や研磨装置Ａ１へ制御信号が出力されつつ、各種検出信号がロボット制御盤に入力される。 The drive control of the welding robot B1 is performed by a robot control panel (not shown). The robot control panel also controls the drive of the polishing device A1. For example, during welding work, a control signal is output from the robot control panel to the welding robot B1, and detection signals from various sensors and the like are input to the robot control panel. Further, during the polishing work, various detection signals are input to the robot control panel while the control signal is output from the robot control panel to the welding robot B1 and the polishing device A1.

図１に戻り、上記一対のばね部材３１，３２については、そのばね定数が大きく比較的硬いばねが採用され、電極６，６によるカッターホルダ４への加圧力よりも各ばね部材３１，３２による反力が大とされている。 Returning to FIG. 1, for the pair of spring members 31 and 32, a spring having a large spring constant and being relatively hard is adopted, and the spring members 31 and 32 are used rather than the pressing force applied to the cutter holder 4 by the electrodes 6 and 6. The reaction force is said to be large.

スポット溶接による溶接作業時には、一対の電極６，６は、繰り返し行う溶接作業に伴って先端が摩耗し、形状変化を来す。そして、所定の溶接作業を実行した後、一対の電極６，６は、研磨装置Ａ１を用いて研磨される。 During the welding work by spot welding, the tips of the pair of electrodes 6 and 6 are worn by the repeated welding work, and the shape changes. Then, after performing a predetermined welding operation, the pair of electrodes 6 and 6 are polished using the polishing device A1.

研磨装置Ａ１を用いて一対の電極６，６の研磨作業を行う際、カッターホルダ４を回転させるためのモータ２１の回転数、一対の電極６，６間の距離、一対の電極６，６によるカッターホルダ４に対する加圧力等の研磨条件について可変制御しており、所定のタイムチャートに沿って実行される。また、研磨作業時には、モータ２１の駆動状態（例えばトルクや電流等）が検出され、当該検出値情報がロボット制御盤に入力される。 When polishing a pair of electrodes 6 and 6 using the polishing device A1, the rotation speed of the motor 21 for rotating the cutter holder 4, the distance between the pair of electrodes 6 and 6, and the pair of electrodes 6 and 6 are used. Polishing conditions such as pressure applied to the cutter holder 4 are variably controlled, and are executed according to a predetermined time chart. Further, during the polishing operation, the driving state of the motor 21 (for example, torque, current, etc.) is detected, and the detected value information is input to the robot control panel.

次に、本実施形態に係る研磨装置Ａ１を用いて行うスポット溶接用電極（一対の電極６，６）の研磨作業の一例、および本実施形態の作用について説明する。 Next, an example of the polishing work of the spot welding electrodes (pair of electrodes 6 and 6) performed by using the polishing apparatus A1 according to the present embodiment, and the operation of the present embodiment will be described.

例えば溶接ロボットＢ１に採用されるスポット溶接機が直流インバータ式の溶接機の場合、極性効果により、一対の電極６，６それぞれの摩耗の程度に差が生じる。このような場合、摩耗が多い方の電極６に必要な研磨量は、摩耗が少ない方の電極６に必要な研磨量よりも大きい。例えば上方の電極６の必要研磨量Ｌ１が下方の電極６の必要研磨量Ｌ２よりも大きい場合、まず、一対の電極６，６によりカッターホルダ４を上下から挟んで加圧し、その状態でカッターホルダ４を回転させて一対の電極６，６を同時に研磨する。これら電極６，６の研磨量がＬ２に到達すると、その時点で下方の電極６をカッターホルダ４から離間させて開放し、かつ上方の電極６によりカッターホルダ４を所定の加圧力で押し付ける。ここで、ばね部材３２の反力が電極６による加圧力よりも大きいことから、図４に示すように、支持体２がばね部材３２によって反力を受けながら、上方の電極６がカッターホルダ４に対して適正な加圧力で押し付けられる。したがって、上方の電極６のみを個別に切削研磨することができる。 For example, when the spot welder used in the welding robot B1 is a DC inverter type welder, the degree of wear of each of the pair of electrodes 6 and 6 differs due to the polar effect. In such a case, the amount of polishing required for the electrode 6 having more wear is larger than the amount of polishing required for the electrode 6 having less wear. For example, when the required polishing amount L1 of the upper electrode 6 is larger than the required polishing amount L2 of the lower electrode 6, first, the cutter holder 4 is sandwiched between the pair of electrodes 6 and 6 from above and below to pressurize, and then the cutter holder is pressed in that state. 4 is rotated to polish the pair of electrodes 6 and 6 at the same time. When the polishing amount of these electrodes 6 and 6 reaches L2, the lower electrode 6 is separated from the cutter holder 4 and opened, and the cutter holder 4 is pressed by the upper electrode 6 with a predetermined pressing force. Here, since the reaction force of the spring member 32 is larger than the pressing force of the electrode 6, as shown in FIG. 4, while the support 2 receives the reaction force by the spring member 32, the upper electrode 6 is the cutter holder 4. It is pressed against the body with an appropriate pressing force. Therefore, only the upper electrode 6 can be individually cut and polished.

また、下方の電極６のみを切削研磨する場合には、図５に示すように、カッターホルダ４を回転させつつ、上方の電極６をカッターホルダ４から離間させて開放し、かつ下方の電極６によりカッターホルダ４を所定の加圧力で押し付ければよい。ここで、ばね部材３１の反力が電極６による加圧力よりも大きいことから、支持体２がばね部材３１によって反力を受けながら、下方の電極６がカッターホルダ４に対して適正な加圧力で押し付けられる。したがって、下方の電極６のみを個別に切削研磨することができる。 When cutting and polishing only the lower electrode 6, as shown in FIG. 5, while rotating the cutter holder 4, the upper electrode 6 is separated from the cutter holder 4 and opened, and the lower electrode 6 is opened. The cutter holder 4 may be pressed with a predetermined pressing force. Here, since the reaction force of the spring member 31 is larger than the pressing force by the electrode 6, the lower electrode 6 exerts an appropriate pressing force on the cutter holder 4 while the support 2 receives the reaction force by the spring member 31. Pressed with. Therefore, only the lower electrode 6 can be individually cut and polished.

本実施形態の研磨装置Ａ１においては、一対の電極６，６によるカッターホルダ４への加圧力よりも各ばね部材３１，３２による反力が大とされている。このような構成によれば、一方の電極６のみを個別に切削研磨することができる。したがって、一対の電極６，６それぞれの必要研磨量が異なる場合において、無駄な切削を回避することができ、電極６の使用寿命を延ばすことができる。また、本実施形態によれば、一対の電極６，６を同時に切削研磨する状態といずれか一方の電極６のみを切削研磨する状態とを容易に切り替えることができるので、各電極６の研磨量調整を効率よく行うことができる。 In the polishing apparatus A1 of the present embodiment, the reaction force of the spring members 31 and 32 is larger than the pressure applied to the cutter holder 4 by the pair of electrodes 6 and 6. According to such a configuration, only one of the electrodes 6 can be individually cut and polished. Therefore, when the required polishing amount of each of the pair of electrodes 6 and 6 is different, unnecessary cutting can be avoided and the service life of the electrodes 6 can be extended. Further, according to the present embodiment, it is possible to easily switch between a state in which a pair of electrodes 6 and 6 are cut and polished at the same time and a state in which only one of the electrodes 6 is cut and polished, so that the amount of polishing of each electrode 6 is increased. Adjustment can be performed efficiently.

また、本実施形態によれば、例えば一対の電極６，６について通常の研磨作業を行い、その後、研磨状態の良否の判定により一方の電極６のみが切削不良の判定となった場合、当該切削不良と判定された電極６に対してのみ個別に研磨作業を行うことができる。したがって、研磨リトライ時の作業効率を高めることができる。 Further, according to the present embodiment, for example, when a pair of electrodes 6 and 6 are subjected to normal polishing work, and then only one of the electrodes 6 is determined to be poorly cut by determining whether the polishing state is good or bad, the cutting is performed. Polishing work can be individually performed only on the electrodes 6 determined to be defective. Therefore, the work efficiency at the time of polishing retry can be improved.

以上、本発明の実施形態を説明したが、本発明の技術的範囲は上記した実施形態に限定されるものではない。本発明の各部の具体的な構成は、種々に変更が可能である。 Although the embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the above-described embodiments. The specific configuration of each part of the present invention can be changed in various ways.

Ａ１ 研磨装置
Ｂ１ 溶接ロボット
Ｏｘ 回転軸線
１ ベース体
１１，１２ 横板部
１３ 縦板部
１４ シャフト部材
２ 支持体
２１ モータ
３１，３２ ばね部材
４ カッターホルダ
４１ 凹み部
４２ カッター
４２ａ 刃部
５ 支柱
６ 電極
７ 可動アーム
７１ アーム部
８ 溶接ガン
９ サーボモータ A1 Welding equipment B1 Welding robot Ox Rotating axis 1 Base body 11,12 Horizontal plate part 13 Vertical plate part 14 Shaft member 2 Supporter 21 Motor 31, 32 Spring member 4 Cutter holder 41 Recessed part 42 Cutter 42a Blade part 5 Strut 6 Electrode 7 Movable arm 71 Arm part 8 Welding gun 9 Servo motor

Claims (2)

ベース体と、
上記ベース体に対して上下方向に摺動可能に支持された支持体と、
上記支持体に回転可能に支持され、カッターが装着されたカッターホルダと、
上記支持体を挟んで上下に設けられ、一方が上記支持体の上部と上記ベース体に連結され、かつ他方が上記支持体の下部と上記ベース体に連結された一対のばね部材と、を備え、
溶接ガンの先端に設けられた一対の電極により上記カッターホルダを挟みながらカッターホルダを回転させて上記一対の電極を研磨する、スポット溶接用電極の研磨装置であって、
上記カッターホルダを回転させて上記一対の電極を同時に研磨し、次いで研磨が必要な一方の上記電極を上記カッターホルダに押し付けて追加研磨し、
上記追加研磨が必要な一方の上記電極を上記カッターホルダに押し付けた際の当該カッターホルダへの加圧力よりも、上記各ばね部材の反力が大である、スポット溶接用電極の研磨装置。 With the base body
A support that is slidably supported in the vertical direction with respect to the base body,
A cutter holder that is rotatably supported by the above support and is equipped with a cutter,
It is provided above and below the support, one of which is connected to the upper part of the support and the base body, and the other is provided of the lower part of the support and a pair of spring members connected to the base body. ,
A spot welding electrode polishing device that polishes the pair of electrodes by rotating the cutter holder while sandwiching the cutter holder with a pair of electrodes provided at the tip of the welding gun .
The cutter holder is rotated to polish the pair of electrodes at the same time, and then one of the electrodes requiring polishing is pressed against the cutter holder for additional polishing .
A spot welding electrode polishing device in which the reaction force of each spring member is larger than the pressing force applied to the cutter holder when one of the electrodes requiring additional polishing is pressed against the cutter holder . ベース体と、
上記ベース体に対して上下方向に摺動可能に支持された支持体と、
上記支持体に回転可能に支持され、カッターが装着されたカッターホルダと、
上記支持体を挟んで上下に設けられ、一方が上記支持体の上部と上記ベース体に連結され、かつ他方が上記支持体の下部と上記ベース体に連結された一対のばね部材と、を備えたスポット溶接用電極の研磨装置を用いて、
溶接ガンの先端に設けられた一対の電極により上記カッターホルダを挟みながらカッターホルダを回転させて上記一対の電極を研磨する、スポット溶接用電極の研磨方法であって、
上記カッターホルダを回転させて上記一対の電極を同時に研磨し、次いで研磨が必要な一方の上記電極を上記カッターホルダに押し付けて追加研磨し、
上記追加研磨が必要な一方の上記電極を上記カッターホルダに押し付けた際の当該カッターホルダへの加圧力よりも、上記各ばね部材の反力が大である、スポット溶接用電極の研磨方法。 With the base body
A support that is slidably supported in the vertical direction with respect to the base body,
A cutter holder that is rotatably supported by the above support and is equipped with a cutter,
It is provided above and below the support, one of which is connected to the upper part of the support and the base body, and the other is provided of the lower part of the support and a pair of spring members connected to the base body. Using a spot welding electrode polishing device,
A method for polishing spot welding electrodes, in which the cutter holder is rotated while sandwiching the cutter holder with a pair of electrodes provided at the tip of the welding gun to polish the pair of electrodes .
The cutter holder is rotated to polish the pair of electrodes at the same time, and then one of the electrodes requiring polishing is pressed against the cutter holder for additional polishing .
A method for polishing an electrode for spot welding, wherein the reaction force of each spring member is larger than the pressing force applied to the cutter holder when one of the electrodes requiring additional polishing is pressed against the cutter holder .
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015213937A (en) 2014-05-09 2015-12-03 ファナック株式会社 Tip dressing system with dressing device for cutting electrode tip of spot welding gun
JP2016022524A (en) 2014-07-23 2016-02-08 ファナック株式会社 Polishing system of electrode of spot-welding gun

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JP2532407Y2 (en) * 1991-05-10 1997-04-16 三菱自動車工業株式会社 Electrode polishing equipment for spot welding gun

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015213937A (en) 2014-05-09 2015-12-03 ファナック株式会社 Tip dressing system with dressing device for cutting electrode tip of spot welding gun
JP2016022524A (en) 2014-07-23 2016-02-08 ファナック株式会社 Polishing system of electrode of spot-welding gun

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