JPH04118179A - Device and method for checking cutting of electrode tip - Google Patents
Device and method for checking cutting of electrode tipInfo
- Publication number
- JPH04118179A JPH04118179A JP23656690A JP23656690A JPH04118179A JP H04118179 A JPH04118179 A JP H04118179A JP 23656690 A JP23656690 A JP 23656690A JP 23656690 A JP23656690 A JP 23656690A JP H04118179 A JPH04118179 A JP H04118179A
- Authority
- JP
- Japan
- Prior art keywords
- electrode tip
- light
- guide
- recess
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000012790 confirmation Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 16
- 239000013307 optical fiber Substances 0.000 description 15
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、自動車の車体組立ライン等で自動スポット
溶接をする溶接ロボットのアームの先端に設けた電極チ
ップの切削確認装置とその確認方法に関するものである
。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device and method for checking cutting of an electrode tip provided at the tip of an arm of a welding robot that performs automatic spot welding on an automobile body assembly line, etc. It is something.
従来、自動車の車体組立ライン等では、溶接ロボットに
よる自動スポット溶接が行われている。Conventionally, automatic spot welding using welding robots has been performed on automobile body assembly lines and the like.
この自動スポット溶接は、一対の電極チップの間に溶接
個所を挟み込んで行うものである。この電極チップは、
溶接回数が多くなると、その先端が酸化膜に覆われると
ともに、接触面積が大きくなり、溶接不良の原因になっ
ていた。そのため、足回数の溶接を行うと、チップドレ
ッサーによって電極チップの先端を切削して酸化皮膜を
除去するとともに、電極チップの先端が元の形状になる
ように整形していた。しかし、溶接ロボットのアームが
自動的にチップドレッサーのブレード（切刃）の位置に
来で、自動的に電極チップの先端が切削されているだけ
で、完全に電極チップの先端が切削されて元の形状にな
っているかどうかの判断は作業者が目視により行う必要
があった。This automatic spot welding is performed by sandwiching the welding point between a pair of electrode tips. This electrode tip is
As the number of welding increases, the tip becomes covered with an oxide film and the contact area increases, causing welding defects. Therefore, when welding is performed several times, the tip of the electrode tip is cut using a tip dresser to remove the oxide film and the tip of the electrode tip is reshaped to its original shape. However, when the arm of the welding robot automatically comes to the position of the blade (cutting edge) of the tip dresser, the tip of the electrode tip is only automatically cut off, but the tip of the electrode tip is completely cut off and the tip is completely removed. It was necessary for the operator to visually determine whether the shape was correct.
しかし、作業者がチップドレッサーの設置場所へ行き目
視によるチエツク等をしている時に、溶接ロボットが誤
動作をした場合には大変危険となるので、実際には作業
者の目視によるチエツクは行われていなかった。However, if the welding robot malfunctions when the worker goes to the location where the tip dresser is installed and performs a visual check, it would be very dangerous, so in reality, the worker does not visually check the welding robot. There wasn't.
そこでこの出願の発明では、危険が伴う作業者の目視に
よるチエツクに代わって、チップドレッサーの近くで、
溶接ロボットのアームが動く範囲内の位置に、電極チッ
プの形状を光センサーにより完全に切削できたかどうか
を確認できる電極チップの切削確認装置及びその確認方
法を提供しようとするものである。Therefore, in the invention of this application, instead of the dangerous visual check by the operator, a check is performed near the chip dresser.
An object of the present invention is to provide an electrode tip cutting confirmation device and a confirmation method that can confirm whether the shape of the electrode tip has been completely cut using an optical sensor at a position within the movement range of the arm of a welding robot.
〔課題を解決するだめの手段］
そのためにこの出願の発明の電極チップの切削確認装置
は、ガイドケースに設けた電極チップガイドに窪みを設
けるとともに、この窪みに小孔を設け、前記電極チップ
ガイドとガイドケースの内部に連通孔を設け、この連通
孔に光伝達手段を設け、前記電極チップガイドの小孔の
窪みと反対部分に、光伝達手段に設けた発光口と受光口
を配し、前記光伝達手段に発光素子を設けたアンプを取
り付けたものとしている。[Means for Solving the Problem] For this purpose, the electrode chip cutting confirmation device of the invention of this application is provided with a recess in the electrode chip guide provided in the guide case, a small hole in the recess, and the electrode chip guide provided in the guide case. and a communicating hole is provided inside the guide case, a light transmitting means is provided in the communicating hole, and a light emitting port and a light receiving port provided in the light transmitting means are arranged in a portion opposite to the recess of the small hole of the electrode tip guide, An amplifier including a light emitting element is attached to the light transmission means.
また、ガイドケースに電極チップガイドを背中合わせに
２個設け、２個の電極チップを同時に切削確認するよう
にしたものとしてもよい。Alternatively, two electrode tip guides may be provided in the guide case back to back, so that cutting of the two electrode tips can be confirmed at the same time.
さらに、ガイドケースに電極チップガイドを１個設けた
ものとしてもよい。Furthermore, one electrode tip guide may be provided in the guide case.
また、この出願の発明の電極チップの切削確認方法は、
電極チップを、電極チップの切削確認装置の電極チップ
ガイドに設けた窪みに挿入し、アンプに設けた発光素子
から発生した光が、光伝達手段を通過して発光口より発
せられると、前記電極チップガイドの窪みに設けた小孔
を通って、電極チップの先端面に当たり、反射して再び
小孔を通って受光口へ光が入り、この光が再び光伝達手
段を通過してアンプに戻る時に、戻る光量に応じて電極
チップの切削の有無の確認をするものである。In addition, the method for confirming cutting of an electrode tip according to the invention of this application is as follows:
The electrode tip is inserted into the recess provided in the electrode tip guide of the electrode tip cutting confirmation device, and when the light generated from the light emitting element provided in the amplifier passes through the light transmission means and is emitted from the light emitting port, the electrode tip Light passes through the small hole provided in the recess of the chip guide, hits the tip of the electrode tip, is reflected, passes through the small hole again, enters the light receiving port, and this light passes through the light transmission means again and returns to the amplifier. At times, the presence or absence of cutting of the electrode tip is checked depending on the amount of returned light.
［作用〕
この出願の発明は上記の構成により、電極チップを、電
極チップの切削確認装置の電極チップガイドの窪みに挿
入し、アンプの発光素子から光を発生させると、この光
が光伝達手段を通過して光伝達手段の発光口より発せら
れることになる。すると、前記電極チップガイドの窪み
の小孔を通って、電極チップの先端面に当たり、反射し
て再び小孔を通って受光口へ光が入り、この光が再び光
伝達手段を通過してアンプに戻ることになる。この時、
戻る光量に応じて電極チップの切削の有無の確認をする
ことができる。[Operation] The invention of this application has the above-mentioned configuration, and when an electrode tip is inserted into the recess of the electrode tip guide of the electrode tip cutting confirmation device and light is generated from the light emitting element of the amplifier, this light is transmitted to the light transmission means. The light passes through and is emitted from the light emitting port of the light transmission means. Then, the light passes through the small hole in the recess of the electrode tip guide, hits the tip end surface of the electrode tip, is reflected, passes through the small hole again, enters the light receiving port, and this light passes through the light transmission means again to the amplifier. will return to. At this time,
Depending on the amount of returned light, it is possible to check whether the electrode tip has been cut or not.
以下この出願の発明の構成を、実施例として示した図面
にしたがって説明する。The configuration of the invention of this application will be explained below with reference to the drawings shown as examples.
第１図乃至第４図に示すように、（１）は電極チップの
切削確認装置で、電極チップガイド（２）、ガイドケー
ス（３）、及び光フアイバーケーブル（４）を設けると
ともに、光フアイバーケーブル（４）の一端にはアンプ
（５）を取り付けている。As shown in Figs. 1 to 4, (1) is an electrode tip cutting confirmation device, which is provided with an electrode tip guide (2), a guide case (3), and an optical fiber cable (4), and an optical fiber cable (4). An amplifier (5) is attached to one end of the cable (4).
前記電極チップガイド（２）の中央部には富み（６）を
設けている。この窪み（６）は全体が半球状に窪んでお
り、正確に切削された状態の電極チップ（７）の先端と
完全に一致する形状としている。また、前記窪み（６）
の略中央部には小孔（８）を設けている。この小孔（８
）は、窪み（６）と反対部分の電極チップガイド（２）
の内部に、光フアイバーケーブル（４）が位置すること
になるが、その時に小孔（８）の中央に前記光フアイバ
ーケーブル（４）が来るような位置に、前記窪み（６）
に設けている。さらに、前記電極チップガイド（２）は
、第３図、第４図、及び第６図に示すように、上下に２
個対称に設けたものとしている。A recess (6) is provided in the center of the electrode tip guide (2). The recess (6) is entirely hemispherical and has a shape that perfectly matches the tip of the accurately cut electrode tip (7). In addition, the depression (6)
A small hole (8) is provided approximately in the center of the hole. This small hole (8
) is the electrode tip guide (2) opposite the recess (6).
The optical fiber cable (4) will be located inside the recess (6) so that the optical fiber cable (4) is located in the center of the small hole (8).
It is set up in Furthermore, the electrode tip guide (2) is arranged vertically in two directions, as shown in FIGS. 3, 4, and 6.
They are arranged symmetrically.
前記ガイドケース（３）の先端は半円状である。このガ
イドケース（３）の先端部には、前記電極チップガイド
（２）を設けている。また、前記ガイドケース（３）は
、第３図、第４図、及び第６図に示すように、上下に２
個対称に設けたものとしている。さらに、前記上下に設
けたガイドケース（３）の中央と、前記上下に設けた電
極チップガイド（２）の中央には連通ずる連通孔（９）
をそれぞれ設けている。この連通孔（９）は、２本の光
フアイバーケーブル（４）を通すためのものである。The tip of the guide case (3) is semicircular. The electrode tip guide (2) is provided at the tip of the guide case (3). Further, the guide case (3) has two upper and lower parts, as shown in FIGS. 3, 4, and 6.
They are arranged symmetrically. Furthermore, a communication hole (9) is provided between the center of the guide case (3) provided above and below and the center of the electrode tip guide (2) provided above and below.
are provided for each. This communication hole (9) is for passing two optical fiber cables (4).
前記光フアイバーケーブル（４）は、第５図に示すよう
に断面形状が円で、その中央には壁（１０）を設け、か
つ壁（１０）の両側には光ファイバー（１１）を２本設
けている。また、光ファイバーケーフル（４）が、前記
電極チップガイド（２）の窪み（６）の小孔（８）に配
置される部分には、第５図に示したように発光口（１２
）と受光口（１３）をそれぞれ設けている。さらに、光
フアイバーケーブル（４）は、第４図に示すように止め
ネジ（１４）でガイドケース（３）の後端部付近に止め
られている。The optical fiber cable (4) has a circular cross-sectional shape as shown in FIG. 5, has a wall (10) in the center, and has two optical fibers (11) on both sides of the wall (10). ing. Further, as shown in FIG.
) and a light receiving port (13). Further, the optical fiber cable (4) is fixed near the rear end of the guide case (3) with a set screw (14) as shown in FIG.
前記アンプ（５）は、光フアイバーケーブル（４）の一
端に取り付けている。また、このアンプ（５）には、光
を発生させる発光素子として、発光ダイオード（図示せ
ず）を設けている。しかし、発光素子としては発光ダイ
オードに限定せず、レーザーダイオード等のその他の発
光素子を設けてもよい。The amplifier (5) is attached to one end of an optical fiber cable (4). Further, this amplifier (5) is provided with a light emitting diode (not shown) as a light emitting element that generates light. However, the light emitting element is not limited to the light emitting diode, and other light emitting elements such as a laser diode may be provided.
第７図から第９図に示すように、電極チップガイド（２
）とガイドケース（３）が、それぞれ１個ずつから成る
電極チップの切削確認装置（１）を実施することができ
る。この場合は、先ず一対の電極チップ（７）の一方の
切削の有無を確認し、その後で、前記一対の電極チップ
（７）を１８０°反転させて他方の電極チップ（７）の
切削の有無を確認するものである。As shown in Figures 7 to 9, the electrode tip guide (2
) and a guide case (3), the cutting confirmation device (1) for an electrode tip can be implemented. In this case, first check whether one of the pair of electrode tips (7) has been cut, and then turn the pair of electrode tips (7) 180° to see if the other electrode tip (7) has been cut. This is to confirm.
次に、この出願の発明の電極チップの切削確認方法につ
いて説明する。Next, a method for checking cutting of an electrode tip according to the invention of this application will be explained.
第１図に示すように、自動的にチップドレッサー （１
５）のブレード（１６）で切削された一対の電極チップ
（７）を、前記チップドレッサー（１５）の近辺に設け
た電極チップの切削確認装置（１）の電極チップガイド
（２）の窪み（６）にそれぞれ挿入する。As shown in Figure 1, the chip dresser (1
The pair of electrode tips (7) cut by the blade (16) of 5) are placed in the recess ( 6) respectively.
そして、アンプ（５）に設けた発光ダイオードから光を
発生させると、この光が、２本の光フアイバーケーブル
（４）をそれぞれ通過して、前記光フアイバーケーブル
（４）の発光口（１２）より発せられることになる。す
ると、光が前記電極チップガイド（２）の窪み（６）の
小孔（８）を通って、切削された電極チップ（７）の先
端面（１７）に当たり、反射して再び小孔（８）を通っ
て、光が、光フアイバーケーブル（４）の受光口（１３
）へ入り（第６図参照）、この光が、再び光フアイバー
ケーブル（４）を通過してアンプ（５）に戻ることにな
る。この時、戻る光量に応じて電極チップ（７）の切削
の有無の確認及び合否を判断する。Then, when light is generated from the light emitting diode provided in the amplifier (5), this light passes through each of the two optical fiber cables (4) and reaches the light emitting port (12) of the optical fiber cable (4). It will be emitted more. Then, the light passes through the small hole (8) of the recess (6) of the electrode tip guide (2), hits the cut tip surface (17) of the electrode tip (7), is reflected, and returns to the small hole (8). ), the light passes through the light receiving port (13) of the fiber optic cable (4).
) (see Figure 6), this light passes through the optical fiber cable (4) again and returns to the amplifier (5). At this time, it is confirmed whether or not the electrode tip (7) has been cut and whether it is acceptable or not is determined according to the amount of returned light.
すなわち、電極チップ（７）が黒く変色したり、その先
端が磨耗して反射光の受光口（１３）に入る光量が設定
値より少ない場合には、前記電極チップ（７）の切削は
できなかった（不合格）として判断し、ランプ等（図示
せず）で知らせるとともに、溶接ロボット（図示せず）
には再切削の信号を送り、電極チップ（７）の再度の切
削を命令するものである。That is, if the electrode tip (7) turns black or its tip is worn out and the amount of reflected light entering the light receiving port (13) is less than the set value, the electrode tip (7) cannot be cut. The welding robot (not shown) will be notified by a lamp etc. (not shown).
A re-cutting signal is sent to the holder to instruct the electrode tip (7) to be cut again.
また、上下一対で同時に確認することができる電極チッ
プの切削確認装置（１）（第６図参照）では、上下２つ
の電極チップ（７）の先端面（１７）に反射して、２本
の光フアイバーケーブル（４）の受光口（１３）にそれ
ぞれ入って来た光量が、両方とも合格となった時（上下
２つの電極チ１．プ（７）が切削できた時）に初めて合
格とする。In addition, in the electrode tip cutting confirmation device (1) (see Figure 6), which can simultaneously confirm a pair of upper and lower electrode tips, two Only when the amount of light entering each light receiving port (13) of the optical fiber cable (4) passes the test (when the two upper and lower electrode chips (7) can be cut) is the test passed. do.
この出願の発明は上述のような構成及び方法を有するも
のであり、したがって、危険が伴う作業者の目視による
チエツクに代わって、チップドレッサーの近くで、溶接
ロボットのアームが動く範囲内の位置に、電極チップの
形状を光センサーにより完全に切削できたかどうかを確
認できる大変価れた電極チップの切削確認装置及びその
確認方法を提供することができた。The invention of this application has the above-described structure and method, and therefore, instead of the dangerous visual check by the operator, the welding robot arm is placed near the tip dresser and within the range of movement of the welding robot arm. It was possible to provide an extremely expensive cutting confirmation device for an electrode tip and a confirmation method therefor, which can confirm whether the shape of the electrode tip has been completely cut using an optical sensor.
第１図はこの出願の発明に係る電極チップの切削確認装
置の斜視図。第２図はこの出願の発明に係る電極チップ
の切削確認装置の一実施例を示す平面図。第３図は第２
図中のＡ−Ａ線断面図。第４図は第２図中のＢ−Ｂ線断
面図。第５図は光フアイバーケーブルの縦断面図。第６
図は使用状態を示す第２図中のＡ−Ａ線拡大断面図。第
７図は電極チップの切削確認装置の別実施例を示す平面
図。第８図は第７図中のＣ−Ｃ線断面図。第９図は第７
図中のＤ−Ｄ線断面図。
（１）・・・電極チップの切削確認装置（２）・・・電
極チップ （３）・・・ガイドケース（４）・・・光
フアイバケーブルFIG. 1 is a perspective view of an electrode tip cutting confirmation device according to the invention of this application. FIG. 2 is a plan view showing an embodiment of the electrode tip cutting confirmation device according to the invention of this application. Figure 3 is the second
A sectional view taken along line A-A in the figure. FIG. 4 is a sectional view taken along line B-B in FIG. 2. FIG. 5 is a longitudinal cross-sectional view of the optical fiber cable. 6th
The figure is an enlarged sectional view taken along the line A-A in FIG. 2 showing the state of use. FIG. 7 is a plan view showing another embodiment of the cutting confirmation device for the electrode tip. FIG. 8 is a sectional view taken along the line CC in FIG. 7. Figure 9 is the 7th
A sectional view taken along the line DD in the figure. (1)... Electrode tip cutting confirmation device (2)... Electrode tip (3)... Guide case (4)... Optical fiber cable
Claims (1)
けるとともに、この窪みに小孔を設け、前記電極チップ
ガイドとガイドケースの内部に連通孔を設け、この連通
孔に光伝達手段を設け、前記電極チップガイドの小孔の
窪みと反対部分に、光伝達手段に設けた発光口と受光口
を配し、前記光伝達手段に発光素子を設けたアンプを取
り付けたことを特徴とする電極チップの切削確認装置。 ２、ガイドケースに電極チップガイドを背中合わせに２
個設け、２個の電極チップを同時に切削確認するように
した請求項１記載の電極チップの切削確認装置。 ３、ガイドケースに電極チップガイドを１個設けて成る
請求項１記載の電極チップの切削確認装置。 ４、電極チップを、電極チップの切削確認装置の電極チ
ップガイドに設けた窪みに挿入し、アンプに設けた発光
素子から発生した光が、光伝達手段を通過して発光口よ
り発せられると、前記電極チップガイドの窪みに設けた
小孔を通って、電極チップの先端面に当たり、反射して
再び小孔を通って受光口へ光が入り、この光が再び光伝
達手段を通過してアンプに戻る時に、戻る光量に応じて
電極チップの切削の有無の確認をすることを特徴とする
電極チップの切削確認方法。[Claims] 1. A recess is provided in the electrode tip guide provided in the guide case, a small hole is provided in the recess, a communicating hole is provided between the electrode tip guide and the inside of the guide case, and the communicating hole is provided with a light source. A transmitting means is provided, a light emitting port and a light receiving port provided in the light transmitting means are disposed in a part opposite to the recess of the small hole of the electrode tip guide, and an amplifier provided with a light emitting element is attached to the light transmitting means. Features: Electrode tip cutting confirmation device. 2. Place the electrode tip guide back to back in the guide case.
2. The cutting confirmation device for an electrode tip according to claim 1, wherein two electrode tips are provided and the cutting confirmation device is configured to check cutting of two electrode tips at the same time. 3. The electrode tip cutting confirmation device according to claim 1, wherein one electrode tip guide is provided in the guide case. 4. When the electrode tip is inserted into the recess provided in the electrode tip guide of the electrode tip cutting confirmation device, and the light generated from the light emitting element provided in the amplifier passes through the light transmission means and is emitted from the light emitting port, Light passes through the small hole provided in the recess of the electrode tip guide, hits the tip end surface of the electrode tip, is reflected, passes through the small hole again, enters the light receiving port, and this light passes through the light transmission means again to the amplifier. A method for checking cutting of an electrode tip, comprising checking whether or not the electrode tip has been cut according to the amount of light returned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23656690A JP2920560B2 (en) | 1990-09-05 | 1990-09-05 | Electrode tip cutting confirmation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23656690A JP2920560B2 (en) | 1990-09-05 | 1990-09-05 | Electrode tip cutting confirmation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04118179A true JPH04118179A (en) | 1992-04-20 |
| JP2920560B2 JP2920560B2 (en) | 1999-07-19 |
Family
ID=17002535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23656690A Expired - Fee Related JP2920560B2 (en) | 1990-09-05 | 1990-09-05 | Electrode tip cutting confirmation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2920560B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524175U (en) * | 1991-08-30 | 1993-03-30 | 三菱自動車工業株式会社 | Electrode inspection device for spot welding |
| JPH06578U (en) * | 1992-06-12 | 1994-01-11 | 新光機器株式会社 | Electrode polishing device |
| JPH07251275A (en) * | 1994-03-14 | 1995-10-03 | Honda Motor Co Ltd | Electrode tip dresser |
| JPH07308786A (en) * | 1994-05-19 | 1995-11-28 | Hinomoto Kogyo Kk | Sensor for tip dressing |
| JP2002219581A (en) * | 2001-01-25 | 2002-08-06 | Honda Motor Co Ltd | Anomaly detection method for dressing of electrode tip and device therefor |
| DE19931889B4 (en) * | 1999-07-08 | 2011-05-19 | Lutz Precision, K.S. | milling device |
| DE102004062260B4 (en) * | 2003-12-24 | 2011-05-19 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | Control device and control method for a vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101326033B1 (en) | 2012-07-26 | 2013-11-05 | 주식회사 나우정공 | Inspecting apparatus of tip for welding terminal of resistance welder |
-
1990
- 1990-09-05 JP JP23656690A patent/JP2920560B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524175U (en) * | 1991-08-30 | 1993-03-30 | 三菱自動車工業株式会社 | Electrode inspection device for spot welding |
| JPH06578U (en) * | 1992-06-12 | 1994-01-11 | 新光機器株式会社 | Electrode polishing device |
| JPH07251275A (en) * | 1994-03-14 | 1995-10-03 | Honda Motor Co Ltd | Electrode tip dresser |
| JPH07308786A (en) * | 1994-05-19 | 1995-11-28 | Hinomoto Kogyo Kk | Sensor for tip dressing |
| DE19931889B4 (en) * | 1999-07-08 | 2011-05-19 | Lutz Precision, K.S. | milling device |
| JP2002219581A (en) * | 2001-01-25 | 2002-08-06 | Honda Motor Co Ltd | Anomaly detection method for dressing of electrode tip and device therefor |
| JP4653892B2 (en) * | 2001-01-25 | 2011-03-16 | 本田技研工業株式会社 | Electrode tip dressing abnormality detection method and apparatus |
| DE102004062260B4 (en) * | 2003-12-24 | 2011-05-19 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | Control device and control method for a vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2920560B2 (en) | 1999-07-19 |
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