JPS62236679A - Screw driver - Google Patents
Screw driverInfo
- Publication number
- JPS62236679A JPS62236679A JP7781286A JP7781286A JPS62236679A JP S62236679 A JPS62236679 A JP S62236679A JP 7781286 A JP7781286 A JP 7781286A JP 7781286 A JP7781286 A JP 7781286A JP S62236679 A JPS62236679 A JP S62236679A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- clutch
- contact
- detection means
- operation detection
- 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
- 238000001514 detection method Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 241001655798 Taku Species 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 101000869592 Daucus carota Major allergen Dau c 1 Proteins 0.000 description 1
- 101000650136 Homo sapiens WAS/WASL-interacting protein family member 3 Proteins 0.000 description 1
- 102100027539 WAS/WASL-interacting protein family member 3 Human genes 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はネジの締め付けが終了すると同時に次のネジを
ネジ部品供給装置よりネジ送りホースを介して締め付け
工具へ自動的に送るネジ締め付け装置に関するものであ
る。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a screw tightening device that automatically feeds the next screw from a screw parts supply device to a tightening tool via a screw feed hose at the same time as screw tightening is completed. It is.
従来、第５図に示すようにネジ部品供給装置２１、ネジ
送りホース２２、締め付け工具ｎよりなるネジ締め付け
装置は、締め付け工具器のスリーブ２４とノーズ２５の
相対的移動により動作するマイクロスイッチ邪により電
気回路を動作させ、電磁弁を動作させることにより空気
圧を利用して、ネジを自動的にネジ部品供給装置２１よ
りネジ送りホースηを介して、締め付け工具おに送り込
んでいた。Conventionally, as shown in FIG. 5, a screw tightening device consisting of a screw component supply device 21, a screw feed hose 22, and a tightening tool n is operated by a microswitch operated by relative movement of a sleeve 24 and a nose 25 of the tightening tool. By operating an electric circuit and operating a solenoid valve, air pressure is used to automatically feed screws from a screw component supply device 21 to a tightening tool via a screw feed hose η.
しかし、マイクロスイッチ邪の取付け回りの構造が複雑
になり、場所もとるため操作性も悪い。However, the structure around which the microswitch is installed is complicated, and it takes up a lot of space, making it difficult to operate.
本発明の目的は、上記した従来技術の欠点をなくするこ
とにある。The object of the present invention is to eliminate the drawbacks of the prior art described above.
本発明は、締め付け工具のスリーブとノーズの相対的移
動により動作するマイクロスイッチの代わりに、ネジ締
めのトルクアップによるクラッチの移動により動作する
クラッチ動作検知手段の信号でネジの供給を自動的に行
うよう工夫したものである。The present invention automatically feeds screws using a signal from a clutch operation detection means that is activated by the movement of the clutch due to increased torque in screw tightening, instead of using a microswitch that is activated by the relative movement of the sleeve and nose of the tightening tool. It was devised to do so.
第１図、第２図は本発明の一実施例を示す電動ドライバ
ーのような締め付け工具のクラッチ回りの概略横断面図
である。第１図は締め何は動作中の状態を示す。図示さ
れていないモータ巧に接続されているモータ駆動軸２が
回転すると、モータ駆動軸２に固定された固定クラッチ
１も回転する。可動クラッチ３はボールキー４を介して
従動軸５に取付けられ、従動軸５の軸方向にスライドで
き、従動軸５と共に回転する。また、可動クラッチ３は
スプリング６によりスラストボールベアリング７を介し
て固定クラッチｌに固定された固定キー８に押し付けら
れている。可動クラッチ３が第１図の位置から左へ動く
時、クラッチ動作検知手段１０が動作するように、クラ
ッチ動作検知手段Ｍ）が可動クラッチ３の回りに設置さ
れている。クラッチ動作検知手段】０として、本発明で
はマイクロスイッチをもとにして説明するか、磁気セン
サ或いは光電センサでも同様な効果を得ることか出来る
。第１図の条件のもとで、モータ駆動軸２からの駆動力
は固定クラッチ１、固定キー８、可動キー９および可動
クラッチ３を介して従動軸５を回転させ、従動軸５の左
端に取付けたドライバビットを回転させてネジ等を締め
付ける。1 and 2 are schematic cross-sectional views of a tightening tool such as an electric screwdriver, showing an embodiment of the present invention, around a clutch. FIG. 1 shows the state in which the clamp is in operation. When a motor drive shaft 2 connected to a motor (not shown) rotates, a fixed clutch 1 fixed to the motor drive shaft 2 also rotates. The movable clutch 3 is attached to the driven shaft 5 via a ball key 4, can slide in the axial direction of the driven shaft 5, and rotates together with the driven shaft 5. Further, the movable clutch 3 is pressed by a spring 6 via a thrust ball bearing 7 to a fixed key 8 fixed to the fixed clutch l. Clutch operation detection means M) are installed around the movable clutch 3 so that the clutch operation detection means 10 operates when the movable clutch 3 moves to the left from the position shown in FIG. Clutch operation detection means] The present invention will be explained based on a microswitch, or a similar effect can be obtained using a magnetic sensor or a photoelectric sensor. Under the conditions shown in FIG. 1, the driving force from the motor drive shaft 2 rotates the driven shaft 5 via the fixed clutch 1, fixed key 8, movable key 9, and movable clutch 3, and the left end of the driven shaft 5 rotates. Rotate the installed driver bit to tighten the screws, etc.
締め付けが十分に行われてスプリング６の押圧力によっ
て設定したトルクよりも大きな９荷か従動軸５に加わる
と、固定キー８に可動キー９か乗り上げる。結果として
、可動クラッチ３は固定クラッチ１より離脱し、クラッ
チ動作検知手段Ｉ）は押し下げられた状態になる。この
時、クラッチ動作検知手段１０の可動接点Ｃは固定接点
ａに接触している。第２図はこのような締め付け処理の
終了状態を示し、クラッチの状態は離脱された状態にあ
る。なお、休止時は第１図の状態に戻る。When sufficient tightening is performed and a load 9 greater than the set torque is applied to the driven shaft 5 due to the pressing force of the spring 6, the movable key 9 rides on the fixed key 8. As a result, the movable clutch 3 is disengaged from the fixed clutch 1, and the clutch operation detection means I) is in a depressed state. At this time, the movable contact C of the clutch operation detection means 10 is in contact with the fixed contact a. FIG. 2 shows a state in which such a tightening process has been completed, and the clutch is in a disengaged state. Note that when the system is at rest, it returns to the state shown in FIG. 1.
第３図は本発明による具体的な回路図を示す。FIG. 3 shows a specific circuit diagram according to the present invention.
図において、■はバッテリあるいはＡＣ電源を整流平滑
した直流電源、νは双投形の電源スイッチで固定接点ａ
あるいはもう一つの固定接点すのどちらかに接触する可
動接点Ｃからなる。すなわち、固定接点ａは直流電源Ｈ
の正端子に接続され、可動接点Ｃと他の固定接点すはめ
いめい正逆スイッチにの端子に接続される。固定接点す
は電源スイッチ四がターンオフした時モータｂにブレー
キをかけるよう用意されている。ｎはリレーコイル１３
１とリレー接点】３２からなるリレー回路テ、Ｑレーコ
イル】３】は一方の端子は電源スイッチΩの可動接点Ｃ
に、他方端子はＳ ＣＲ１６１のアノードに接続される
。リレー接点１３２は電源スイッチでの可動接点Ｃに接
続される固定接点Ａと直流電源１】の負端子に接続され
るもう一つの固定接点Ｂを持つ。ｋは正逆スイッチでネ
ジを締め付けるか緩めるかによってモータ１５への供給
電圧の極性を変える双極双投スイッチである。正逆スイ
ッチドは実線によって示される状態にある時、モータｂ
はネジを締め付けるために正方向に回転する。拓はＳ
ＣＲ１６］と抵抗器１６２からなるスイッチング回路、
ｎは抵抗器】７】、 ツェナーダイオード１７２からな
る定電圧回路、思は抵抗器１８１．１８２、トランジス
タ１８３、単安定マルチバイブレータ１８４、時遅用可
変抵抗器１８５、時遅用コンデンサ１８６からなるタイ
マーで、時遅用可変抵抗器】８５の抵抗値と時遅用コン
デンサ１８６の容量値によりタイマー動作時間Ｔか決ま
る。刃はトランジスタ１９】、抵抗器１９２．１９３か
らなる電磁弁駆動回路、２０は電磁弁である。第３図の
回路動作を第４図のタイムチャートをもとに説明する。In the figure, ■ is a battery or a DC power source obtained by rectifying and smoothing an AC power source, and ν is a double-throw power switch with fixed contact a.
Alternatively, it consists of a movable contact C that contacts either of the other fixed contacts. In other words, fixed contact a is connected to DC power supply H.
The movable contact C and the other fixed contacts are each connected to the terminal of the forward/reverse switch. Fixed contacts are provided to brake motor b when power switch 4 is turned off. n is relay coil 13
One terminal of the relay circuit consisting of 1 and relay contact TE, Q relay coil] 3 is the movable contact C of the power switch Ω.
The other terminal is connected to the anode of SCR161. The relay contact 132 has a fixed contact A connected to a movable contact C of the power switch and another fixed contact B connected to the negative terminal of the DC power source 1. k is a double-pole, double-throw switch that changes the polarity of the voltage supplied to the motor 15 by tightening or loosening a screw with a forward/reverse switch. When forward/reverse switched is in the state shown by the solid line, motor b
rotates in the forward direction to tighten the screw. Taku is S
CR16] and a switching circuit consisting of a resistor 162,
n is a resistor [7], a constant voltage circuit consisting of a Zener diode 172, and a timer consisting of a resistor 181, 182, a transistor 183, a monostable multivibrator 184, a time delay variable resistor 185, and a time delay capacitor 186. The timer operating time T is determined by the resistance value of the time delay variable resistor 85 and the capacitance value of the time delay capacitor 186. The blade is a solenoid valve drive circuit consisting of a transistor 19], resistors 192 and 193, and 20 is a solenoid valve. The circuit operation of FIG. 3 will be explained based on the time chart of FIG. 4.
まず、ネジの締め付けか緩めかによって、手動により正
逆スイッチ１４をいずねかによってセットするが、締め
付ける場合を想定して説明を進める。First, the forward/reverse switch 14 is manually set depending on whether the screw is to be tightened or loosened, but the explanation will proceed assuming that the screw is tightened.
通常、電源スイッチ１２のターンオン前のクラッチの状
態は第】図の状態にあり、また各スイッチの状態は第３
図の実線で示される状態にある。すなわち、電源スイッ
チ四の可動接点Ｃは固定接点すに接触し、クラッチ動作
検知回路１０の可動接点Ｃは固定接点ａから離れており
、リレー接点１３２の可動接点Ｃは固定接点Ｂに接触し
ている。Normally, before the power switch 12 is turned on, the clutch is in the state shown in Figure 3, and each switch is in the state shown in Figure 3.
It is in the state shown by the solid line in the figure. That is, the movable contact C of the power switch 4 is in contact with the fixed contact A, the movable contact C of the clutch operation detection circuit 10 is separated from the fixed contact a, and the movable contact C of the relay contact 132 is in contact with the fixed contact B. There is.
電源スイッチνの可動接点Ｃが点線で示されるように固
定接点ａに接触するようにターンオンすると、モータｂ
か回転する。この時、リレーコイル１３１に電圧が印加
されていないので、リレー接点１３２の可動接点Ｃは固
定接点Ｂに接触している。かつ、５ＣＲ１６１のゲート
にトリがパルスが加えられていない。締め付け中クラッ
チは第１図の状態にあるので、クラッチ動作検知手段（
イ）の可動接点Ｃは固定接点ａに接触していない。When the movable contact C of the power switch ν is turned on so as to contact the fixed contact a as shown by the dotted line, the motor b
Or rotate. At this time, since no voltage is applied to the relay coil 131, the movable contact C of the relay contact 132 is in contact with the fixed contact B. Moreover, no pulse is applied to the gate of 5CR161. During tightening, the clutch is in the state shown in Figure 1, so the clutch operation detection means (
The movable contact C in a) is not in contact with the fixed contact a.
ネジが締め付けられてコイルスプリング６の押圧力によ
って設定されるトルクよりも大きな負荷が従動軸５に加
わると、第２図のように可動キー９が固定キー８に乗り
上げて、固定クラッチｌと可動クラッチ３が離脱する。When the screw is tightened and a load larger than the torque set by the pressing force of the coil spring 6 is applied to the driven shaft 5, the movable key 9 rides on the fixed key 8 as shown in FIG. Clutch 3 disengages.
可動クラッチ３によって点線で示すようにクラッチ動作
検知手段１０の可動接点Ｃは固定接点ａに接触し、Ｓ
ＣＲ１６１のゲートに抵抗器１６２を通じてトリガ電流
か流れる。結果として、Ｓ ＣＲ１６］はリレ−コイル
１３１ヲ動作させ、リレー接点１３２の可動接点Ｃは固
定接点Ａに接触する。リレー回路Ｂの可動接点Ｃは固定
接点Ｂを離れるので、モータｂへの給電か断たれる。同
時に、リレー接点１３２の可動接点Ｃと固定接点Ａの接
触はモータｂに対し短絡回路を作る。結果として、モー
タｂにブレーキがかかり、回転速度が減少し、最終的に
停止する。この時、クラッチの状態は第１図の状態で停
止する。この結果、クラッチ動作検知手段１０の可動接
点Ｃは固定接点ａを離れる。As shown by the dotted line, the movable clutch 3 causes the movable contact C of the clutch operation detection means 10 to come into contact with the fixed contact a, and
A trigger current flows through the resistor 162 to the gate of CR161. As a result, the SCR16 operates the relay coil 131, and the movable contact C of the relay contact 132 contacts the fixed contact A. Since the movable contact C of the relay circuit B leaves the fixed contact B, the power supply to the motor b is cut off. At the same time, the contact between movable contact C and fixed contact A of relay contact 132 creates a short circuit for motor b. As a result, motor b is braked, its rotational speed decreases, and finally it stops. At this time, the clutch is stopped in the state shown in FIG. As a result, the movable contact C of the clutch operation detection means 10 leaves the fixed contact a.
一方、クラッチ動作検知手段ｌ）の可組、接点Ｃが固定
接点ａに接触することによりタイマー脂が信号を一定時
間（Ｔ）出力し、電磁弁駆動回路を動作させる。これに
より、電磁弁器が一定時間動作し、高圧空気がホース中
に流れ、ネジがネジ部品供給装置から締め付け工具に送
り込まれる。On the other hand, when the movable contact C of the clutch operation detection means l) comes into contact with the fixed contact a, the timer outputs a signal for a certain period of time (T) and operates the electromagnetic valve drive circuit. This causes the solenoid valve to operate for a certain period of time, causing high pressure air to flow into the hose and feeding the screw from the threaded component feeder into the tightening tool.
本発明によれば、可動クラッチ３の回りにクラッチ動作
手段を配置することにより、ネジ締め付け終了を簡単な
構造で検知することが出来る。さらに、ネジ締め付け終
了時モータにブレーキをかける信号としても利用してい
るため、綿め付けトルク精度の向上にも有効である。According to the present invention, by arranging the clutch operating means around the movable clutch 3, the completion of screw tightening can be detected with a simple structure. Furthermore, since it is also used as a signal to brake the motor at the end of screw tightening, it is effective in improving the accuracy of the tightening torque.
第１図、第２図は本グ〔を明の一実施例を示す電動ドラ
イバーのような電動綿め付け工具のクラッチ回りの概略
板１１ｊ＋平面図、第３図は本発明による具体的な回路
図、第４図はそのタイムチャート、第５図は従来の自動
ネジ縮め付け装置の外観斜視図である。図において、１
は固定クラッチ、３は可動クラッチ、１０はクラッチ動
作検知手段、Ｌ５はモータ、拓はスイッチング回路、脂
はタイマー、加は電磁弁、２１はネジ部品供給装置、２
２はネジ送りホース、２３は締めイ・１け工具である。Figures 1 and 2 are a schematic plan view of a plate 11j around the clutch of an electric flossing tool such as an electric screwdriver showing one embodiment of this invention, and Figure 3 is a concrete circuit according to the present invention. 4 is a time chart thereof, and FIG. 5 is an external perspective view of a conventional automatic screw tightening device. In the figure, 1
3 is a fixed clutch, 3 is a movable clutch, 10 is a clutch operation detection means, L5 is a motor, Taku is a switching circuit, fat is a timer, KA is a solenoid valve, 21 is a screw parts supply device, 2
2 is a screw feeding hose, and 23 is a tightening tool.
Claims (1)
出力伝達を遮断するクラッチ部を有する締め付け工具と
、電源スイッチを閉じてモータを起動させた時前記クラ
ッチ部の変位に応じて動作するクラッチ動作検知手段と
、該クラッチ動作検知手段の動作により一定時間ネジを
圧送する信号を発生するタイマーと、該タイマーの動作
にもとづき高圧空気をネジ部品供給装置に供給し、ネジ
送りホースを介して締め付け工具にネジを圧送する電磁
弁からなるネジ締め付け装置。 ２、前記クラッチ動作検知手段から発生した信号でモー
タへの通電を遮断し、自己保持してモータの両端を短絡
し発電制動をかけるように動作するスイッチング回路か
らなる特許請求範囲第１項記載のネジ締め付け装置。[Scope of Claims] 1. A tightening tool having a clutch portion that receives a predetermined load between a motor drive shaft and a driven shaft and interrupts output transmission; a clutch operation detection means that operates according to the displacement of the part; a timer that generates a signal to force-feed the screw for a certain period of time according to the operation of the clutch operation detection means; and supplying high-pressure air to the screw parts supply device based on the operation of the timer. A screw tightening device consisting of a solenoid valve that pressure-feeds the screw to the tightening tool via the screw feed hose. 2. A switching circuit according to claim 1, which comprises a switching circuit that operates to cut off power to the motor in response to a signal generated from the clutch operation detection means, self-maintain, short-circuit both ends of the motor, and apply dynamic braking. Screw tightening device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7781286A JPS62236679A (en) | 1986-04-04 | 1986-04-04 | Screw driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7781286A JPS62236679A (en) | 1986-04-04 | 1986-04-04 | Screw driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62236679A true JPS62236679A (en) | 1987-10-16 |
| JPH0521717B2 JPH0521717B2 (en) | 1993-03-25 |
Family
ID=13644431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7781286A Granted JPS62236679A (en) | 1986-04-04 | 1986-04-04 | Screw driver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62236679A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS582036A (en) * | 1981-06-26 | 1983-01-07 | Fujitsu Ltd | Manufacture of semiconductor device |
-
1986
- 1986-04-04 JP JP7781286A patent/JPS62236679A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS582036A (en) * | 1981-06-26 | 1983-01-07 | Fujitsu Ltd | Manufacture of semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0521717B2 (en) | 1993-03-25 |
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