JPH05285665A - Applying force control device of motor-driven spot welding gun - Google Patents
Applying force control device of motor-driven spot welding gunInfo
- Publication number
- JPH05285665A JPH05285665A JP4119922A JP11992292A JPH05285665A JP H05285665 A JPH05285665 A JP H05285665A JP 4119922 A JP4119922 A JP 4119922A JP 11992292 A JP11992292 A JP 11992292A JP H05285665 A JPH05285665 A JP H05285665A
- Authority
- JP
- Japan
- Prior art keywords
- electric motor
- welding gun
- spot welding
- motor
- nut
- 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
Landscapes
- Resistance Welding (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電動機により駆動され
る点溶接ガンの溶接時における加圧力を制御する装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for controlling a pressing force during welding of a spot welding gun driven by an electric motor.
【０００２】[0002]
【従来の技術】従来、電動機により駆動される点溶接ガ
ンとしては図５に示すようなものがある。即ち、図５に
おいて、３１はシリンダ３２の後端に設置された電動機
であり、該電動機の回転軸３３には小歯車３４が取付け
られ、これと噛み合う大歯車３５にリ―ドスクリュ―３
６が固着されている。また、先端に電極３７が取付けら
れ後端に前記リ―ドスクリュ―３６のねじと螺合するナ
ット３８を固定した可動ア―ム３９は、前記シリンダ３
２に回転不能で前後進可能に配設されている。４０は一
端に電極４１が取付けられ他端が前記シリンダ４２に固
定された固定ア―ムである。2. Description of the Related Art Conventionally, a spot welding gun driven by an electric motor is shown in FIG. That is, in FIG. 5, reference numeral 31 is an electric motor installed at the rear end of the cylinder 32, a small gear 34 is attached to a rotating shaft 33 of the electric motor, and a large screw gear 35 meshing with the small gear 34 is attached to the lead screw 3.
6 is fixed. Further, the movable arm 39 having the electrode 37 attached to the tip thereof and the nut 38 fixed to the screw of the lead screw 36 fixed to the rear end thereof is
2 is arranged so that it cannot rotate and can move forward and backward. Reference numeral 40 is a fixed arm having an electrode 41 attached to one end and the other end fixed to the cylinder 42.
【０００３】上記のものにおいて、電動機３１の回転は
小歯車３４と大歯車３５を介して減速されてリ―ドスク
リュ―３６を回転させ、該リ―ドスクリュ―３６と螺合
するナット３８を介して可動ア―ム３９を前後進させ
る。そして、電極４１，３７のそれぞれがワ―ク４２に
当接した状態から加圧動作に入り、ワ―ク４２を加圧状
態にしてから溶接電流を供給して溶接を行うものであ
る。In the above structure, the rotation of the electric motor 31 is decelerated via the small gear 34 and the large gear 35 to rotate the lead screw 36, and the nut 38 which is screwed with the lead screw 36 is used. Move the movable arm 39 forward and backward. Then, the pressing operation starts from a state where each of the electrodes 41 and 37 is in contact with the work 42, and the welding current is supplied after the work 42 is pressed to perform welding.
【０００４】ところで、前記ワ―ク４２を電極４１，３
７で加圧する際の加圧力の制御には２つの方法が考えら
れる。即ち、その１は単に駆動電動機３１のトルクを設
定値に保つ開ル―プ制御であり、その２は電極４１，３
７に加えられた加圧力を圧力センサ―により測定し、そ
の値をフィ―ドバックして電動機３１を制御する閉ル―
プ制御である。By the way, the work 42 is connected to the electrodes 41 and 3.
There are two possible methods for controlling the applied pressure when applying pressure in 7. That is, the first is simply open loop control for keeping the torque of the drive motor 31 at the set value, and the second is the electrodes 41, 3
The pressure applied to 7 is measured by a pressure sensor, and the value is fed back to control the electric motor 31.
Control.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上記開ル―
プ制御はその機構が簡単でありコストも安いが、加圧力
を設定値に正確に保つことが困難である。これに反して
閉ル―プ制御はその制御精度は高いが、安定且つ廉価な
圧力センサ―が無く、コスト高となり実用的ではない。However, the above-mentioned open rule
Although the control mechanism is simple and the cost is low, it is difficult to keep the applied pressure at the set value accurately. On the contrary, the closed loop control has high control accuracy, but it is not practical because it does not have a stable and inexpensive pressure sensor, resulting in high cost.
【０００６】本発明は、従来の技術の有するこのような
問題点に鑑みてなされたものであり、その目的とすると
ころは、閉ル―プ制御により低コストで且つ溶接に適し
た加圧力が正確に得られるような電動機駆動による点溶
接ガンの加圧力制御装置を提供しようとするものであ
る。The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to achieve a low cost and a welding pressure suitable for welding by the closed loop control. An object of the present invention is to provide a pressurizing force control device for a spot welding gun driven by an electric motor, which can be accurately obtained.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明における電動機駆動による点溶接ガンの加圧
力制御装置は、電動機の回転に連動して往復動するリ―
ドスクリュ―の前部のスプリング保持部材と可動ア―ム
の後端の滑走体との間にスプリングを張設し、前記スプ
リング保持部材の滑走体内での移動により動作するスイ
ッチをモ―タドライバを介して前記電動機に接続して該
電動機を制御するようにしたことを特徴とするものであ
る。In order to achieve the above object, the welding pressure control device for a spot welding gun driven by an electric motor according to the present invention reciprocates in association with the rotation of the electric motor.
A spring is stretched between the spring holding member at the front of the screw and the sliding body at the rear end of the movable arm, and a switch operated by the movement of the spring holding member in the sliding body is inserted through a motor driver. The electric motor is connected to the electric motor to control the electric motor.
【０００８】また、電動機の回転に連動して回転運動す
るリ―ドスクリュ―の前部にナットを螺合せ、該ナット
を可動ア―ムの後端の滑走体に回転不能で摺動可能に配
置し、前記ナットと滑走体との間にスプリングを張設
し、前記ナットの滑走体内での移動により動作するスイ
ッチをモ―タドライバを介して前記電動機に接続して該
電動機を制御するようにしたことを特徴とするものであ
る。Further, a nut is screwed on the front portion of the lead screw which rotates in association with the rotation of the electric motor, and the nut is arranged so as to be non-rotatable and slidable on the sliding body at the rear end of the movable arm. Then, a spring is stretched between the nut and the sliding body, and a switch operated by the movement of the nut in the sliding body is connected to the electric motor through a motor driver to control the electric motor. It is characterized by that.
【０００９】更に、前記スイッチに代えて前記スプリン
グ保持部材又はナットの滑走体内の位置を検知する位置
センサ―を配設したことを特徴とするものである。Further, in place of the switch, a position sensor for detecting the position of the spring holding member or the nut in the sliding body is arranged.
【００１０】更にまた、前記電動機にパルス発信器を配
設し、該パルス発信器と前記スイッチとをゲ―ト回路に
接続し、該ゲ―ト回路の出力をカウンタに接続した後に
モ―タドライバを介して前記電動機に接続したことを特
徴とするものである。Furthermore, a pulse oscillator is provided in the electric motor, the pulse oscillator and the switch are connected to a gate circuit, and the output of the gate circuit is connected to a counter, and then a motor driver. It is characterized in that it is connected to the electric motor via.
【００１１】[0011]
【作用】上記のように構成された点溶接ガンの加圧力制
御装置において、電動機の回転によりリ―ドスクリュ―
が前進し、この前進により可動ア―ムも前進して両電極
がワ―クに当接する。さらにリ―ドスクリュ―が前進す
ることによりスプリングは圧縮されてその反力が可動ア
―ムに伝達されワ―クは両電極により加圧される。そし
てこのスプリングの圧縮により滑走体とスプリング保持
部材の位置関係は短くなる。In the pressure control device for the spot welding gun configured as described above, the lead screw is rotated by the rotation of the electric motor.
And the movable arm also advances due to this advance, and both electrodes come into contact with the work. Further, as the lead screw advances, the spring is compressed and the reaction force is transmitted to the movable arm, and the work is pressed by both electrodes. The compression of the spring shortens the positional relationship between the sliding body and the spring holding member.
【００１２】滑走体とスプリング保持部材の距離が所望
の値まで近付く（加圧力が所望の値になる）とスイッチ
が閉動作し、この閉信号がモ―タドライバを介して電動
機に伝達されて電動機の駆動を停止させる（請求項１の
場合）。When the distance between the sliding member and the spring holding member approaches a desired value (the pressing force reaches a desired value), the switch is closed, and this closing signal is transmitted to the electric motor through the motor driver to drive the electric motor. Is stopped (in the case of claim 1).
【００１３】また、電動機の回転によりリ―ドスクリュ
―が回転し、この回転によりナットを介して可動ア―ム
が前進して両電極がワ―クに当接する。さらにリ―ドス
クリュ―が回転することによりナットのみが前進してス
プリングは圧縮され、その反力が可動ア―ムに伝達され
ワ―クは両電極により加圧される。そしてこのスプリン
グの圧縮により滑走体とナットの位置関係は短くなるよ
うにしている（請求項２の場合）。Further, the lead screw is rotated by the rotation of the electric motor, and the rotation causes the movable arm to advance through the nut so that both electrodes come into contact with the work. Further, as the lead screw rotates, only the nut advances and the spring is compressed, and the reaction force is transmitted to the movable arm and the work is pressurized by both electrodes. The positional relationship between the sliding member and the nut is shortened by the compression of the spring (in the case of claim 2).
【００１４】更に、滑走体内のスプリング保持部材又は
ナットの位置は常に位置センサ―によって検知され、そ
の位置が所望の位置まで来ると位置センサ―が停止信号
を発してその信号がモ―タドライバを介して電動機に伝
達されて電動機の駆動を停止させるが、可動ア―ムのオ
―バ―ラン或は溶接作業により溶接点のワ―クの膨張ま
たは冷却等により前記位置が変動すると前記位置センサ
―が電動機を再駆動或は逆回転させるように信号を発し
電極による加圧力を常時一定に維持させるようにする
（請求項３の場合）。Further, the position of the spring holding member or the nut in the sliding body is always detected by the position sensor, and when the position reaches a desired position, the position sensor issues a stop signal and the signal is transmitted via the motor driver. Is transmitted to the electric motor to stop the driving of the electric motor, but when the position changes due to expansion or cooling of the work at the welding point due to overrun of the movable arm or welding work, the position sensor Outputs a signal to re-drive or reversely rotate the electric motor so that the pressure applied by the electrodes is always kept constant (in the case of claim 3).
【００１５】更にまた、滑走体とスプリング保持部材又
はナットの距離が所望の値に近付く（加圧力が所望の値
に近付く）とスイッチが閉動作し、この閉信号がゲ―ト
回路に入り、パルス発信器からのパルスがカウンタに出
力されるようになる。そこで所望のパルス数をカウント
する（加圧力が所望の値になる）とその信号がモ―タド
ライバを介して電動機に伝達されて電動機の駆動を停止
させる（請求項４の場合）。Furthermore, when the distance between the sliding member and the spring holding member or the nut approaches the desired value (the pressing force approaches the desired value), the switch closes, and this closing signal enters the gate circuit, The pulse from the pulse generator will be output to the counter. Then, when the desired number of pulses is counted (the pressing force reaches a desired value), the signal is transmitted to the electric motor via the motor driver to stop the driving of the electric motor (in the case of claim 4).
【００１６】[0016]
【実施例】図１を参照してこの発明の第１の実施例につ
いて説明をする。図において、１はシリンダ２の後端に
設置された電動機であり、該電動機１の回転軸３には小
歯車４が取付けられており、これと外周が噛み合う大歯
車５の中心部孔にはねじ６が形成され、このねじ６はリ
―ドスクリュ―７に噛み合っており、該大歯車５は回転
はするが前後進はできないようにシリンダ２によって規
制されているので、大歯車５の回転によりリ―ドスクリ
ュ―７は前後進するようになっている。また前記リ―ド
スクリュ―７の前部先端にはスプリング保持部材８が固
着されている。そして、先端に電極９を取付けた可動ア
―ム１０の後端には滑走体１１が前記シリンダ２内を滑
走するが回転できないように取付けられている。この滑
走体１１の内部にはスプリング１２が配置され、該スプ
リング１２の一端は前記スプリング保持部材８に固着さ
れ他端は滑走体１１に固着されている。なお、１３は先
端に電極１４を取付けた固定ア―ムであり、１５はワ―
クである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. In the figure, reference numeral 1 denotes an electric motor installed at the rear end of a cylinder 2, a small gear 4 is attached to a rotary shaft 3 of the electric motor 1, and a central portion hole of a large gear 5 whose outer periphery meshes with the small gear 4. A screw 6 is formed, and this screw 6 meshes with the lead screw 7. The large gear 5 is restricted by the cylinder 2 so that it can rotate but cannot move forward and backward. The lead screw 7 is designed to move forward and backward. A spring holding member 8 is fixed to the front end of the lead screw 7. A sliding body 11 slides in the cylinder 2 at the rear end of a movable arm 10 having an electrode 9 attached to the tip thereof, but is fixed so as not to rotate. A spring 12 is arranged inside the sliding body 11. One end of the spring 12 is fixed to the spring holding member 8 and the other end is fixed to the sliding body 11. Reference numeral 13 is a fixed arm having an electrode 14 attached to the tip thereof, and 15 is a work arm.
It is Ku.
【００１７】上記のような点溶接ガンにおいて、電動機
１の回転は小歯車４と大歯車５を介して減速されてリ―
ドスクリュ―７を前後進させる。このリ―ドスクリュ―
７の前進により可動ア―ム１０も前進して両電極９，１
４がワ―ク１５に当接する。さらにリ―ドスクリュ―７
が前進することによりスプリング１２は圧縮されてその
反力が可動ア―ム１０に伝達されワ―ク１５は両電極
９，１４により加圧される。そしてこのスプリング１２
の圧縮により滑走体１１とスプリング保持部材８の位置
関係は短くなる。前記両電極９，１４による加圧力が所
望の値になると電動機１の回転は停止されて溶接作業を
行うのである。In the spot welding gun as described above, the rotation of the electric motor 1 is decelerated via the small gear 4 and the large gear 5 and the rotation is performed.
Move the screw 7 forward and backward. This lead screw
The movable arm 10 is also moved forward by the forward movement of 7, and both electrodes 9, 1
4 contacts the work 15. Further lead screw-7
Is moved forward, the spring 12 is compressed and its reaction force is transmitted to the movable arm 10, and the work 15 is pressed by both electrodes 9, 14. And this spring 12
Due to the compression, the positional relationship between the sliding body 11 and the spring holding member 8 is shortened. When the pressure applied by the electrodes 9 and 14 reaches a desired value, the rotation of the electric motor 1 is stopped and welding work is performed.
【００１８】ところで、スプリング保持部材８からのリ
―ド線１６および滑走体１１からのリ―ド線１７の各先
端には接点１８，１９は設けられていてスイッチ２０を
構成している。そして、該スイッチ２０はモ―タドライ
バ２１に接続され、該モ―タドライバ２１は電動機１を
駆動・停止させるよう該電動機１に接続されている。By the way, contacts 18 and 19 are provided at the tips of the lead wire 16 from the spring holding member 8 and the lead wire 17 from the sliding member 11 to form a switch 20. The switch 20 is connected to the motor driver 21, and the motor driver 21 is connected to the electric motor 1 so as to drive and stop the electric motor 1.
【００１９】従って、ワ―ク１５が両電極９，１４によ
り加圧状態に入り、滑走体１１とスプリング保持部材８
の距離が近付き接点１８が接点１９に接触するとき、ワ
―ク１５は所望の加圧力が付与されていることになる。
この接点１８が接点１９に接触してスイッチ２０が閉と
なると、閉信号がモ―タドライバ２１を介して電動機１
に伝達されて電動機１の駆動を停止させる。そして、こ
の状態で溶接作業が行われる。なお、加圧力の加減は接
点１９の位置の調整によって行うものである。Therefore, the work 15 enters a pressured state by both electrodes 9 and 14, and the sliding body 11 and the spring holding member 8
When the contact 18 comes into contact with the contact 19, the work 15 is given a desired pressing force.
When the contact 18 comes into contact with the contact 19 and the switch 20 is closed, a closing signal is sent via the motor driver 21 to the motor 1
To stop the drive of the electric motor 1. Then, the welding operation is performed in this state. The pressure is adjusted by adjusting the position of the contact 19.
【００２０】溶接が終了すると電動機１を駆動し回転軸
３を逆回転させることにより、リ―ドスクリュ―７は後
退する。この後退により先ずワ―ク１５への加圧力が解
除され次いで可動ア―ムが後退して電極９はワ―ク１５
から離れることになる。When the welding is completed, the electric motor 1 is driven to rotate the rotary shaft 3 in the reverse direction, whereby the lead screw 7 is retracted. By this retreat, the pressure applied to the work 15 is first released, and then the movable arm retreats and the electrode 9 is moved to the work 15
Will be away from.
【００２１】図２は第２の実施例であり、上記第１実施
例とは、リ―ドスクリュ―２２が大歯車５に固着されて
いてリ―ドスクリュ―２２は回転運動して往復動しない
ことおよび該リ―ドスクリュ―２２にナット２３が螺合
され、該ナット２３は滑走体１１内に形成された角孔２
４内に配置されているため、電動機１を駆動しリ―ドス
クリュ―２２を回転させるとワ―ク１５に両電極９，１
４が当接するまでは滑走体１１がナット２３を伴って前
進し、ワ―ク１５に両電極９，１４が当接するとその後
はナット２３が滑走体１１内を摺動前進して滑走体１１
とナット２３の位置関係は短くする。そしてその余の構
成は前記第１の実施例と実質的に同一であるのでその要
部のみを説明したものである。FIG. 2 shows a second embodiment, which is different from the first embodiment in that the lead screw 22 is fixed to the large gear 5 and the lead screw 22 does not reciprocate due to rotational movement. Also, a nut 23 is screwed into the lead screw 22, and the nut 23 is a square hole 2 formed in the sliding body 11.
Since it is arranged inside the No. 4, when the electric motor 1 is driven and the lead screw 22 is rotated, the work 15 has both electrodes 9, 1
4, the sliding body 11 moves forward together with the nut 23, and when both electrodes 9 and 14 come into contact with the work 15, the nut 23 slides forward in the sliding body 11 and moves forward.
The positional relationship between the nut and the nut 23 is shortened. Since the remaining structure is substantially the same as that of the first embodiment, only the main part thereof will be described.
【００２２】図３は第３の実施例であり、上記第１，第
２実施例とは、スイッチ２０に代えて前記スプリング保
持部材８又はナット２３の滑走体１１内の位置を検知す
る位置センサ―２５を設けた点で相違するので、その要
部のみを示したものである。この実施例の場合、滑走体
１１内のスプリング保持部材８又はナット２３の位置は
常に位置センサ―２５によって検知され、加圧時にリ―
ドスクリュ―７の前進又は回転によりスプリング１２が
圧縮されて、スプリング保持部材８又はナット２３の位
置が所望の位置まで来ると位置センサ―２５が停止信号
を発してその信号がモ―タドライバ２１を介して電動機
１に伝達されて電動機の駆動を停止させるが、可動ア―
ムのオ―バ―ラン或は溶接作業により溶接点のワ―ク１
５の膨張または冷却等により前記位置が変動すると前記
位置センサ―２５が電動機１を再駆動或は逆回転させる
ように信号を発しスプリング１２を一定の圧縮状態に導
き、電極による加圧力を常時一定に維持させるようにす
るのである。FIG. 3 shows a third embodiment. The position sensors for detecting the position of the spring holding member 8 or the nut 23 in the sliding body 11 in place of the switch 20 are different from those of the first and second embodiments. Since the difference is that -25 is provided, only the main part thereof is shown. In the case of this embodiment, the position of the spring holding member 8 or the nut 23 in the sliding body 11 is always detected by the position sensor 25, and when the pressure is applied,
When the spring 12 is compressed by the forward movement or rotation of the screw 7, and the position of the spring holding member 8 or the nut 23 reaches a desired position, the position sensor 25 issues a stop signal and the signal is transmitted via the motor driver 21. Is transmitted to the electric motor 1 to stop the driving of the electric motor.
Work of welding point by overrun or welding work
When the position fluctuates due to expansion or cooling of No. 5, the position sensor 25 issues a signal to re-drive or reversely rotate the electric motor 1 to guide the spring 12 to a constant compression state, so that the pressure applied by the electrodes is always constant To maintain.
【００２３】図４は第４の実施例であり、第１，第２実
施例とは、スイッチ２０から電動機１への停止信号の伝
達が相違し、他の構成は第１又は第２実施例と実質的に
同一であるので、その要部のみを示したものである。そ
して、２６は電動機１の回転に応じて電気パルスを発信
させるパルス発信器であり、２７はゲ―ト回路、２８は
ゲ―ト回路２７からのパルスをカウントするカウンタで
あって、カウント設定器２９からの設定値になると出力
するようになっている。FIG. 4 shows the fourth embodiment. The transmission of the stop signal from the switch 20 to the electric motor 1 is different from the first and second embodiments, and the other construction is the first or second embodiment. Since it is substantially the same as the above, only the main part thereof is shown. Further, 26 is a pulse transmitter for transmitting an electric pulse according to the rotation of the electric motor 1, 27 is a gate circuit, 28 is a counter for counting the pulses from the gate circuit 27, and is a count setting device. When the set value from 29 is reached, it is output.
【００２４】この実施例の場合、電動機１の回転に応じ
てパルス発信器２６からのパルスが常時ゲ―ト回路２７
に送られている。そこで、所望の加圧力に近付くと接点
１８が接点１９に接触してスイッチ２０が閉となるの
で、その信号がゲ―ト回路２７に送られる。その結果，
パルス発信器２６からのパルスがゲ―ト回路２７からカ
ウンタ２８に出力されるようになり、これがカウンタ２
８でカウントされ、その値がカウント設定器２９からの
設定値になると該カウンタ２８は加圧力が所望の値にな
ったことをモ―タドライバ２１を介して電動機１に伝達
し、該電動機１の駆動を停止させる。この実施例の場合
には、カウント数を調整することによって加圧力を加減
することができ、またはカウント数を一定にしておいて
接点１９の位置を調整することによっても加圧力を加減
することができるのである。In the case of this embodiment, the pulse from the pulse generator 26 is constantly supplied to the gate circuit 27 according to the rotation of the electric motor 1.
Have been sent to. Then, when the desired pressing force is approached, the contact 18 comes into contact with the contact 19 and the switch 20 is closed, so that the signal is sent to the gate circuit 27. as a result,
The pulse from the pulse oscillator 26 is outputted from the gate circuit 27 to the counter 28, which is the counter 2
When the value is counted by 8, and the value reaches the set value from the count setter 29, the counter 28 notifies the electric motor 1 via the motor driver 21 that the pressing force has reached a desired value, and the counter 28 of the electric motor 1 Stop driving. In the case of this embodiment, the pressing force can be adjusted by adjusting the count number, or the pressing force can be adjusted by adjusting the position of the contact 19 while keeping the count number constant. You can do it.
【００２５】なお、前記第１，第２或は第４の実施例に
おけるスイッチ２０としては通常のリミットスイッチ，
近接スイッチ，光電式スイッチ，その他のオン―オフス
イッチ等いずれのスイッチでも使用可能であり、また第
３の実施例における位置センサ―２５についてもポテン
シオメ―タ，差動変圧器，シンクロ等各種のものが使用
可能である。The switch 20 in the first, second or fourth embodiment is a normal limit switch,
Any switch such as a proximity switch, a photoelectric switch, and other on-off switches can be used, and the position sensor 25 in the third embodiment can also be used as potentiometers, differential transformers, synchros, etc. Can be used.
【００２６】[0026]
【発明の効果】本発明の請求項１および請求項２におい
ては、点溶接ガンの加圧力をスプリングの反力を利用し
て発生させるようにしたので、電極部の機械的レスポン
スが格段に改善されると共にきわめて安価なスイッチで
簡単，正確に加圧力の制御が可能となる。According to the first and second aspects of the present invention, since the pressure force of the spot welding gun is generated by utilizing the reaction force of the spring, the mechanical response of the electrode portion is remarkably improved. In addition, it is possible to control the pressure force easily and accurately with an extremely inexpensive switch.
【００２７】また、請求項３においては、点溶接ガンの
加圧力をスプリングの反力を利用して発生させるように
したので、電極部の機械的レスポンスが格段に改善され
ると共にきわめて安価な位置センサ―で加圧力が一定に
維持されて、より簡単，正確に加圧力の制御が可能とな
る。Further, in the third aspect, since the pressure force of the spot welding gun is generated by utilizing the reaction force of the spring, the mechanical response of the electrode portion is remarkably improved and the position is extremely low. The pressure force is maintained constant by the sensor, which makes it possible to control the force force more easily and accurately.
【００２８】また、請求項４においては、点溶接ガンの
加圧力をスプリングの反力を利用して発生させるように
したので、電極部の機械的レスポンスが格段に改善され
ると共にきわめて安価なスイッチとパルス発信器で、よ
り簡単，正確に加圧力の制御が可能となる。Further, in the present invention, since the pressing force of the spot welding gun is generated by utilizing the reaction force of the spring, the mechanical response of the electrode portion is remarkably improved and the switch is extremely inexpensive. With the pulse generator, it is possible to control the pressure force more easily and accurately.
【図１】本発明に係る電動機駆動による点溶接ガンの加
圧力制御装置の一部断面図を含む制御回路図である。FIG. 1 is a control circuit diagram including a partial sectional view of a pressure control device for a spot welding gun driven by an electric motor according to the present invention.
【図２】本発明の他の実施例に係る電動機駆動による点
溶接ガンの加圧力制御装置の一部断面図である。FIG. 2 is a partial sectional view of a pressure control device for a spot welding gun driven by an electric motor according to another embodiment of the present invention.
【図３】本発明の更に他の実施例に係る電動機駆動によ
る点溶接ガンの加圧力制御装置の一部断面図を含む要部
の制御回路図である。FIG. 3 is a control circuit diagram of essential parts including a partial cross-sectional view of a welding pressure control device for a spot welding gun driven by an electric motor according to still another embodiment of the present invention.
【図４】本発明の更にまた他の実施例に係る電動機駆動
による点溶接ガンの加圧力制御装置の一部断面図を含む
要部の制御回路図である。FIG. 4 is a control circuit diagram of a main part including a partial cross-sectional view of a welding pressure control device for a spot welding gun driven by an electric motor according to still another embodiment of the present invention.
【図５】従来例の電動機駆動による点溶接ガンの断面図
である。FIG. 5 is a sectional view of a conventional spot welding gun driven by an electric motor.
１ 電動機 ７，２２ リ―ドスクリュ― ８ スプリング保持部材 １０ 可動ア―ム １１ 滑走体 １２ スプリング ２０ スイッチ ２１ モ―タドライバ ２３ ナット ２５ 位置センサ― ２６ パルス発信器 ２７ ゲ―ト回路 ２８ カウンタ 1 Electric motor 7,22 Lead screw 8 Spring holding member 10 Movable arm 11 Sliding body 12 Spring 20 Switch 21 Motor driver 23 Nut 25 Position sensor 26 Pulse transmitter 27 Gate circuit 28 Counter
Claims (4)
おいて、電動機の回転に連動して往復動するリ―ドスク
リュ―の前部のスプリング保持部材と可動ア―ムの後端
の滑走体との間にスプリングを張設し、前記スプリング
保持部材の滑走体内での移動により動作するスイッチを
モ―タドライバを介して前記電動機に接続して該電動機
を制御するようにしたことを特徴とする電動機駆動によ
る点溶接ガンの加圧力制御装置。1. In a spot welding gun driven by an electric motor, between a spring holding member at a front portion of a lead screw and a sliding member at a rear end of a movable arm that reciprocate in association with rotation of the electric motor. A motor is characterized in that a spring is stretched over the motor, and a switch operated by the movement of the spring holding member in the sliding body is connected to the electric motor through a motor driver to control the electric motor. Pressure control device for spot welding gun.
おいて、電動機の回転に連動して回転運動するリ―ドス
クリュ―の前部にナットを螺合せ、該ナットを可動ア―
ムの後端の滑走体に回転不能で摺動可能に配置し、前記
ナットと滑走体との間にスプリングを張設し、前記ナッ
トの滑走体内での移動により動作するスイッチをモ―タ
ドライバを介して前記電動機に接続して該電動機を制御
するようにしたことを特徴とする電動機駆動による点溶
接ガンの加圧力制御装置。2. In a spot welding gun driven by an electric motor, a nut is screwed onto the front portion of a lead screw that rotates in conjunction with the rotation of the electric motor, and the nut is movable.
A non-rotatably slidable arrangement is arranged on the sliding body at the rear end of the frame, a spring is stretched between the nut and the sliding body, and a switch operated by the movement of the nut in the sliding body is installed as a motor driver. A point welding gun pressure control device driven by an electric motor, characterized in that the electric motor is connected to the electric motor to control the electric motor.
持部材又はナットの滑走体内の位置を検知する位置セン
サ―を配設したことを特徴とする請求項１又は請求項２
記載の電動機駆動による点溶接ガンの加圧力制御装置。3. A position sensor for detecting the position of the spring holding member or the nut inside the sliding body is provided in place of the switch.
A pressure control device for a spot welding gun driven by an electric motor.
パルス発信器と前記スイッチとをゲ―ト回路に接続し、
該ゲ―ト回路の出力をカウンタに接続した後にモ―タド
ライバを介して前記電動機に接続したことを特徴とする
請求項１又は請求項２記載の電動機駆動による点溶接ガ
ンの加圧力制御装置。4. A pulse oscillator is provided in the electric motor, and the pulse oscillator and the switch are connected to a gate circuit,
3. The welding pressure control device for a spot welding gun driven by an electric motor according to claim 1, wherein the output of the gate circuit is connected to a counter and then connected to the electric motor through a motor driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4119922A JP2691827B2 (en) | 1992-04-15 | 1992-04-15 | Pressure control device for spot welding gun driven by electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4119922A JP2691827B2 (en) | 1992-04-15 | 1992-04-15 | Pressure control device for spot welding gun driven by electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05285665A true JPH05285665A (en) | 1993-11-02 |
| JP2691827B2 JP2691827B2 (en) | 1997-12-17 |
Family
ID=14773502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4119922A Expired - Fee Related JP2691827B2 (en) | 1992-04-15 | 1992-04-15 | Pressure control device for spot welding gun driven by electric motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2691827B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7129005B2 (en) | 2003-05-13 | 2006-10-31 | Avestor Limited Partnership | Polyimide matrix electrolyte and improved batteries therefrom |
| US7198870B2 (en) | 2003-05-13 | 2007-04-03 | Solicore, Inc. | Polyimide matrix electrolyte |
| US7390336B2 (en) | 2003-07-29 | 2008-06-24 | Solicore, Inc. | Polyimide-based lithium metal battery |
| US8088243B2 (en) | 2003-05-13 | 2012-01-03 | Solicore, Inc. | Method of forming a card with embedded IC and electrochemical cell |
| CN102528260A (en) * | 2011-11-10 | 2012-07-04 | 江苏耀华机电科技有限公司 | Intelligent point welding machine |
| US9224516B2 (en) | 2004-07-22 | 2015-12-29 | Solicore, Inc. | Battery tab and packaging frame design |
| CN108723281A (en) * | 2018-06-19 | 2018-11-02 | 卡斯马星乔汽车***（重庆）有限公司 | A kind of counting device and method for hand riveter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01258872A (en) * | 1988-04-05 | 1989-10-16 | Toyota Motor Corp | Spot welding method |
| JPH0381073A (en) * | 1989-08-23 | 1991-04-05 | Hitachi Ltd | Welding machine pressurizing mechanism |
-
1992
- 1992-04-15 JP JP4119922A patent/JP2691827B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01258872A (en) * | 1988-04-05 | 1989-10-16 | Toyota Motor Corp | Spot welding method |
| JPH0381073A (en) * | 1989-08-23 | 1991-04-05 | Hitachi Ltd | Welding machine pressurizing mechanism |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7129005B2 (en) | 2003-05-13 | 2006-10-31 | Avestor Limited Partnership | Polyimide matrix electrolyte and improved batteries therefrom |
| US7198870B2 (en) | 2003-05-13 | 2007-04-03 | Solicore, Inc. | Polyimide matrix electrolyte |
| US8088243B2 (en) | 2003-05-13 | 2012-01-03 | Solicore, Inc. | Method of forming a card with embedded IC and electrochemical cell |
| US7390336B2 (en) | 2003-07-29 | 2008-06-24 | Solicore, Inc. | Polyimide-based lithium metal battery |
| US7824808B2 (en) | 2003-07-29 | 2010-11-02 | Solicore, Inc. | Polyimide-based lithium metal battery |
| US9224516B2 (en) | 2004-07-22 | 2015-12-29 | Solicore, Inc. | Battery tab and packaging frame design |
| CN102528260A (en) * | 2011-11-10 | 2012-07-04 | 江苏耀华机电科技有限公司 | Intelligent point welding machine |
| CN108723281A (en) * | 2018-06-19 | 2018-11-02 | 卡斯马星乔汽车***（重庆）有限公司 | A kind of counting device and method for hand riveter |
| CN108723281B (en) * | 2018-06-19 | 2023-12-26 | 卡斯马星乔汽车***（重庆）有限公司 | Counting device and method for hand riveter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2691827B2 (en) | 1997-12-17 |
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