JPH0115477Y2 - - Google Patents

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Publication number
JPH0115477Y2
JPH0115477Y2 JP1983055126U JP5512683U JPH0115477Y2 JP H0115477 Y2 JPH0115477 Y2 JP H0115477Y2 JP 1983055126 U JP1983055126 U JP 1983055126U JP 5512683 U JP5512683 U JP 5512683U JP H0115477 Y2 JPH0115477 Y2 JP H0115477Y2
Authority
JP
Japan
Prior art keywords
shaft
drive shaft
rotation
clutch
screw
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.)
Expired
Application number
JP1983055126U
Other languages
Japanese (ja)
Other versions
JPS59160125U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP5512683U priority Critical patent/JPS59160125U/en
Publication of JPS59160125U publication Critical patent/JPS59160125U/en
Application granted granted Critical
Publication of JPH0115477Y2 publication Critical patent/JPH0115477Y2/ja
Granted legal-status Critical Current

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Description

【考案の詳細な説明】 本考案はネジ締めに際し、締め始めは高速低ト
ルクで、締め切り時は低速高トルクで締め付けが
行なえる装置に関する。
[Detailed Description of the Invention] The present invention relates to a device that can perform screw tightening at high speed and low torque at the beginning of tightening, and at low speed and high torque at the end of tightening.

従来、電気製品の組立ラインに於けるネジ締め
作業には電気ドライバー又はエアドライバーが用
いられている。
Conventionally, electric screwdrivers or air screwdrivers have been used for screw tightening work on electrical product assembly lines.

電気ドライバーは騒音がなく、トルクの調整も
容易であり、又エアードライバーの様に排気中の
オイルミストで環境を汚染することもない。
Electric screwdrivers are noiseless, the torque can be easily adjusted, and unlike air screwdrivers, they do not pollute the environment with oil mist in the exhaust.

しかし、M5,M6タツピングネジなど大径の
ネジ締めでは大きなトルクを必要とし、大トルク
を生みだすための減速により回転数が下り、実用
性に欠ける。
However, tightening large diameter screws such as M5 and M6 tapping screws requires a large torque, and the deceleration required to generate the large torque lowers the rotation speed, making it impractical.

従つて大径ネジに対してはエアドライバー、中
でもハンマーリング効果によつて大トルクを生み
出すインパクトレンチが用いられることが多い
が、これは騒音が問題となる。
Therefore, for large-diameter screws, air drivers, especially impact wrenches that generate large torque through a hammering effect, are often used, but this poses a noise problem.

本考案が解決しようとする技術課題は回転駆動
源が電気モータであつても、高トルクを発生出来
然もネジ締めスピードを殆んど低下させないこと
である。
The technical problem to be solved by the present invention is that even when the rotational drive source is an electric motor, it is possible to generate high torque while hardly reducing the screw tightening speed.

又、本考案の他の技術課題は装置を可及的にコ
ンパクトに構成し、組立ライン上の狭い場所での
ネジ締めを可能ならしめることである。
Another technical problem of the present invention is to make the device as compact as possible and to enable screw tightening in a narrow space on an assembly line.

本考案は上記技術的課題を解決するため、正逆
回転可能な駆動軸に第1一方向クラツチを介して
ネジ締め軸を連繋し、該ネジ締め軸に前記第1一
方向クラツチの回転伝達方向と同方向に回転伝達
可能な第2一方向クラツチ及び駆動軸の回転方向
に対し逆回転する歯車減速機構を介して前記駆動
軸に連繋した。
In order to solve the above-mentioned technical problem, the present invention connects a screw tightening shaft to a drive shaft that can be rotated in forward and backward directions via a first one-way clutch, and connects the screw tightening shaft to the drive shaft in the direction of rotation transmission of the first one-way clutch. The second one-way clutch is connected to the drive shaft through a second one-way clutch that can transmit rotation in the same direction as the drive shaft, and a gear reduction mechanism that rotates in the opposite direction to the rotation direction of the drive shaft.

第1、第2クラツチ3,3aは同軸上に配備さ
れ、各クラツチ3,3aは締め軸4が嵌まつた駆
動筒31,31aの内面軸方向に逃げ溝38及び
傾斜押え面34を交互に形成し、締め軸4と駆動
筒31,31aの間に棒状コロ32を配備して形
成されている。
The first and second clutches 3, 3a are arranged coaxially, and each clutch 3, 3a alternately has relief grooves 38 and inclined pressing surfaces 34 in the axial direction of the inner surface of the drive cylinders 31, 31a into which the tightening shaft 4 is fitted. A rod-shaped roller 32 is arranged between the tightening shaft 4 and the driving cylinders 31, 31a.

駆動軸の正回転は第1一方向クラツチによつて
減速されることなくその侭ネジ締め軸に伝わり、
ネジ軸先端の係合部に嵌まつたネジを高速で締め
付ける。
The forward rotation of the drive shaft is transmitted to the screwed shaft without being decelerated by the first one-way clutch,
Tighten the screw that fits into the engagement part at the tip of the screw shaft at high speed.

ネジの締めきり時には駆動軸を逆回転させ、こ
の回転を歯車減速機構によつて減速して第2一方
向クラツチによつて伝達し、ネジ締め軸を低速で
回転させる。これによつてネジは高トルクで締め
つけられる。
When the screw is fully tightened, the drive shaft is rotated in the opposite direction, and this rotation is decelerated by the gear reduction mechanism and transmitted to the second one-way clutch, causing the screw tightening shaft to rotate at a low speed. This allows the screw to be tightened with high torque.

何れか一方の一方向クラツチが利いている間は
他方の一方向クラツチは遊んでおり、ネジ締め軸
の回転速度の切換えに何ら支障はない。
While either one-way clutch is engaged, the other one-way clutch is idle, and there is no problem in switching the rotational speed of the screw tightening shaft.

駆動軸の回転動力源に電気モータを用いれば、
騒音の発生はなく、エアドライバーの様に排気中
のオイルミストで環境を汚染することもない。
If an electric motor is used as the rotational power source for the drive shaft,
It does not make any noise, and unlike air drivers, it does not pollute the environment with oil mist in the exhaust.

又、ネジの締めきり時のネジ締め軸の回転が低
下するだけであるから、ネジ締めスピードの低下
は僅かで問題にはならない。
Further, since the rotation of the screw tightening shaft when the screw is fully tightened is only reduced, the decrease in screw tightening speed is small and does not pose a problem.

第1、第2クラツチ3,3aは同軸上に配備さ
れ、然も両クラツチ3,3aは駆動次に31,3
1aと軸4との間に棒状コロを介装して形成され
ているため、コロの代りにボールを使用したクラ
ツチに較べて、耐荷重が同じであればクラツチ径
を大幅に小さく出来る。
The first and second clutches 3, 3a are arranged coaxially, and both clutches 3, 3a are driven by 31, 3a.
Since rod-shaped rollers are interposed between 1a and the shaft 4, the diameter of the clutch can be made much smaller than a clutch using balls instead of rollers for the same load capacity.

従つて、装置全体をコンパクトに構成出来、組
立てライン上の狭い場所でのネジ締めも支障なく
行なうことが出来る。
Therefore, the entire device can be constructed compactly, and screw tightening can be carried out without any problem in a narrow place on the assembly line.

以下図面に示す実施例に基づき本考案を具体的
に説明する。
The present invention will be specifically described below based on embodiments shown in the drawings.

回転駆動源である電気モータ1にカツプリング
11を介して駆動軸2が接続されており、駆動軸
2に第1一方向クラツチ3を介してネジ締め軸4
が連繋されている。
A drive shaft 2 is connected to an electric motor 1 which is a rotational drive source via a coupling 11, and a screw tightening shaft 4 is connected to the drive shaft 2 via a first one-way clutch 3.
are connected.

モータ1の先端側からネジ締め軸4の基端側部
分はコ字状の支持部材7に支持され、支持部材が
シリンダ5によつて昇降するとモータ1及びネジ
締め軸4も支持部材7と一体に昇降する。
The portion from the distal end of the motor 1 to the proximal end of the screw shaft 4 is supported by a U-shaped support member 7, and when the support member is raised and lowered by the cylinder 5, the motor 1 and the screw shaft 4 are also integrated with the support member 7. go up and down.

第1一方向クラツチ3は、第2図、第4図の如
く駆動軸2の下端に突設した駆動筒31と該筒3
1に嵌まつたネジ締め軸4の上端部との間に等間
隔に複数のコロ32を配置し、駆動筒31の内面
にはコロ32の逃げ溝38とコロ32に対する傾
斜押え面34を交互に形成した公知のものであつ
て、駆動軸2が正回転(第4図に於て時計方向回
転)すれば、その侭ネジ締め軸4に回転が伝わる
が、駆動軸2が逆回転してもネジ締め軸4に回転
は伝達されない。
The first one-way clutch 3 includes a drive cylinder 31 protruding from the lower end of the drive shaft 2 and the cylinder 3, as shown in FIGS. 2 and 4.
A plurality of rollers 32 are arranged at equal intervals between the upper end of the screw tightening shaft 4 fitted in the drive tube 31, and relief grooves 38 of the rollers 32 and inclined pressing surfaces 34 for the rollers 32 are arranged alternately on the inner surface of the drive cylinder 31. If the drive shaft 2 rotates in the forward direction (clockwise rotation in FIG. 4), the rotation will be transmitted to the screw tightening shaft 4, but if the drive shaft 2 rotates in the opposite direction, the rotation will be transmitted to the screw tightening shaft 4. Also, rotation is not transmitted to the screw tightening shaft 4.

上記第1一方向クラツチ3の下方にてネジ締め
軸4に該第1一方向クラツチと同様の第2一方向
クラツチ3aが取付けられている。
A second one-way clutch 3a similar to the first one-way clutch 3a is attached to a screw tightening shaft 4 below the first one-way clutch 3.

第2一方向クラツチ3aの駆動筒31aの外周
及び前記駆動軸2の外周には歯面20,30が形
成され、駆動軸2の歯面20にアイドルギヤ61
が噛合している。
Tooth surfaces 20 and 30 are formed on the outer circumference of the drive cylinder 31a of the second one-way clutch 3a and the outer circumference of the drive shaft 2, and an idle gear 61 is formed on the tooth surface 20 of the drive shaft 2.
are meshing.

アイドルギヤ61と駆動筒31aの歯面30と
はギヤ軸62によつて連繋されている。アイドル
ギヤ61及びギヤ軸62は前記支持部材7に枢止
され、アイドルギヤ61に噛合するギヤ軸62上
端の歯面63は駆動軸2の歯面20よりも大径で
あり、ギヤ軸62下端の歯面64は駆動筒31a
の歯面30よりも小径である。
The idle gear 61 and the tooth surface 30 of the drive cylinder 31a are connected by a gear shaft 62. The idle gear 61 and the gear shaft 62 are pivotally fixed to the support member 7, and the tooth surface 63 at the upper end of the gear shaft 62 that meshes with the idle gear 61 has a larger diameter than the tooth surface 20 of the drive shaft 2. The tooth surface 64 of the drive cylinder 31a
It has a smaller diameter than the tooth surface 30 of.

ネジ締め軸4は先端にネジ係合部41を凹設し
ている。ネジ締め軸4の外周にはネジ吸着用のパ
イプ8が嵌められ、該パイプ8には吸引ホース8
1が連繋されている。
The screw fastening shaft 4 has a screw engaging portion 41 recessed at its tip. A pipe 8 for screw suction is fitted on the outer periphery of the screw tightening shaft 4, and a suction hose 8 is attached to the pipe 8.
1 are connected.

図面中、33は一方向クラツチ3,3aの各駆
動筒31,31aとネジ締め軸4との間に嵌まつ
た軸受である。
In the drawings, reference numeral 33 denotes a bearing fitted between each drive cylinder 31, 31a of the one-way clutch 3, 3a and the screw tightening shaft 4.

第6図はタツピングネジを締め付ける際に必要
なトルクとネジの回転の関係をグラフに表わした
ものである。締め付け始めはタツピングネジが相
手部材に喰い込むに必要な程度のトルクであるか
ら低い値である。ネジの頭が相手部材に当たると
急激にトルクが上がり、1回転もしない内に締付
けトルクに達する。
FIG. 6 is a graph showing the relationship between the torque required to tighten a tapping screw and the rotation of the screw. At the beginning of tightening, the torque is low enough to allow the tapping screw to bite into the mating member. When the screw head hits the mating member, the torque increases rapidly and reaches the tightening torque within less than one rotation.

然してネジ締め時、駆動軸2を時計方向に回転
させると第1図に矢印で示す如く第1一方向クラ
ツチ3を介してネジ締め軸4が高速回転してネジ
9を高速で締付ける。
When tightening a screw, when the drive shaft 2 is rotated clockwise, the screw tightening shaft 4 rotates at high speed via the first one-way clutch 3, as shown by the arrow in FIG. 1, and the screw 9 is tightened at high speed.

駆動軸2の回転はアイドルギヤ61、ギヤ軸6
2を介して第2一方向クラツチ3aの駆動筒31
aにも伝わり該筒31aを第4図bの如く反時計
方向に回転させるが、この時コロ32は逃げ溝3
8に嵌まつてネジ締め軸4から離れ、ネジ締め軸
4の自由回転を許容する。
The rotation of the drive shaft 2 is controlled by the idle gear 61 and the gear shaft 6.
2 to the drive cylinder 31 of the second one-way clutch 3a.
a, the cylinder 31a is rotated counterclockwise as shown in FIG.
8 and separates from the screw fastening shaft 4, allowing the screw fastening shaft 4 to rotate freely.

結局、第2一方向クラツチ3aの駆動筒31a
は反時計方向に空回りして、ネジ締め軸4の時計
方向への高速回転に何ら支障はない。
In the end, the drive cylinder 31a of the second one-way clutch 3a
rotates idly in the counterclockwise direction, and there is no problem with high-speed rotation of the screw tightening shaft 4 in the clockwise direction.

ネジを締め切る間際に、モータの回転を切り換
えて駆動軸2を逆回転させれば、第5図に矢印で
示す様にアイドルギヤ61及びギヤ軸62を介し
て第2一方向クラツチ3aに時計方向の回転力が
伝達され、第4図aに示す如く第2一方向クラツ
チ3aの駆動筒31aの傾斜押え面34とネジ締
め軸4との間にコロ32が噛み合つて該駆動筒3
1aの時計方向の回転がネジ締め軸4に伝わる。
Just before tightening the screw, if the rotation of the motor is switched and the drive shaft 2 is rotated in the opposite direction, the second one-way clutch 3a is rotated clockwise via the idle gear 61 and gear shaft 62, as shown by the arrow in FIG. rotational force is transmitted, and as shown in FIG.
The clockwise rotation of 1a is transmitted to the screw tightening shaft 4.

駆動軸2に直結された第1一方向クラツチ3の
駆動筒31は反時計方向に空回りし、ネジ締め軸
4の時計方向回転に支障はない。
The drive cylinder 31 of the first one-way clutch 3, which is directly connected to the drive shaft 2, rotates idly in the counterclockwise direction, and there is no problem in clockwise rotation of the screw tightening shaft 4.

第2一方向クラツチ3aへの入力は歯車減速機
構6によつて減速されており、従つてネジ締めト
ルクは大であり、ネジを強力に締めきることが出
来るのである。
The input to the second one-way clutch 3a is decelerated by the gear reduction mechanism 6, so the screw tightening torque is large and the screw can be strongly tightened.

尚、モータの正逆回転の切換えは相手ネジの長
さに応じてタイマによつて自動的に切換える様に
すれば、切換えのタイミングを誤まることはな
い。
Incidentally, if the switching between forward and reverse rotation of the motor is automatically performed using a timer according to the length of the mating screw, there will be no mistake in the timing of the switching.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はネジ締め装置の正面図、第2図は要部
断面図、第3図は要部側面図、第4図a及びbは
一方向クラツチの説明図、第5図は高トルク出力
時の伝達状態の説明図、第6図は締付けトルクと
ネジ回転の関係を示すグラフである。 2……駆動軸、3……第1一方向クラツチ、4
……ネジ締め軸、6……歯車減速機構。
Figure 1 is a front view of the screw tightening device, Figure 2 is a sectional view of the main part, Figure 3 is a side view of the main part, Figure 4 a and b are explanatory diagrams of the one-way clutch, and Figure 5 is high torque output. FIG. 6 is a graph showing the relationship between tightening torque and screw rotation. 2... Drive shaft, 3... First one-way clutch, 4
...Screw tightening shaft, 6...Gear reduction mechanism.

Claims (1)

【実用新案登録請求の範囲】 正転、逆転切換え可能なモータ1と、 このモータ1の駆動軸2と、 この駆動軸2の同軸下方に配設され先端にネジ
係合部41を有すネジ締め軸4と、 該ネジ締め軸4の基端の外周面に配設された第
1の一方向回転クラツチ3と、 前記基端の外周面の前記第1の一方向回転クラ
ツチ3の下方に配設され前記第1の一方向回転ク
ラツチ3と同じ方向に回転伝達可能な第2の一方
向回転クラツチ3aと、 これらの部材1,2,4,3,3aを昇降せし
めるために前記ネジ締め軸4の基端を支持するコ
字状の支持部材7と、 この支持部材7のコ字状部内に配置された歯車
減速機構6と、を備え、 前記第1の一方向回転クラツチ3は前記駆動軸
2と直結して、前記駆動軸2の回転により前記ネ
ジ締め軸4を駆動し、 前記第2の一方向回転クラツチ3aは、前記駆
動軸2と係合してこの駆動軸2の回転方向とは逆
方向に且つ減速回転する前記歯車減速機構6と、
係合して前記ネジ締め軸4を減速駆動し、 前記各クラツチ3,3aは前記ネジ締め軸4が
嵌まつた夫々の駆動筒31,31aの内面に、軸
方向に延びる逃げ溝38及び傾斜押え面34を周
方向に交互に形成し、前記各逃げ溝38中に棒状
コロ32を配備して形成されており、 前記歯車減速機構6は前記駆動軸2に平行に前
記支持部材7に枢止され、且つ上端及び下端に歯
面63,64を備えて前記駆動軸2からの駆動力
を軸方向下方の前記第2の一方向回転クラツチ3
aに伝達するためのギヤ軸62を備える小型ネジ
締め装置。
[Claims for Utility Model Registration] A motor 1 capable of switching forward and reverse rotation, a drive shaft 2 of this motor 1, and a screw disposed coaxially below this drive shaft 2 and having a threaded engagement portion 41 at its tip. a tightening shaft 4; a first one-way rotating clutch 3 disposed on the outer circumferential surface of the proximal end of the screw tightening shaft 4; and a first one-way rotating clutch 3 disposed below the first one-way rotating clutch 3 on the outer circumferential surface of the proximal end. a second one-way rotary clutch 3a which is arranged and capable of transmitting rotation in the same direction as the first one-way rotary clutch 3; The first one-way rotation clutch 3 includes a U-shaped support member 7 that supports the base end of the shaft 4, and a gear reduction mechanism 6 disposed within the U-shaped portion of the support member 7. The second one-way rotary clutch 3a is directly connected to the drive shaft 2 and drives the screw tightening shaft 4 by the rotation of the drive shaft 2, and the second one-way rotary clutch 3a engages with the drive shaft 2 and controls the rotation of the drive shaft 2. the gear reduction mechanism 6 that rotates at a reduced speed in a direction opposite to the direction;
The clutches 3, 3a are engaged with each other to drive the screw tightening shaft 4 at a reduced speed, and each of the clutches 3, 3a has an escape groove 38 extending in the axial direction and a slope on the inner surface of the respective drive cylinders 31, 31a into which the screw tightening shaft 4 is fitted. Pressing surfaces 34 are formed alternately in the circumferential direction, and rod-shaped rollers 32 are arranged in each of the relief grooves 38, and the gear reduction mechanism 6 is pivoted on the support member 7 in parallel to the drive shaft 2. The second one-way rotary clutch 3 is provided with tooth surfaces 63 and 64 at the upper and lower ends to transfer the driving force from the drive shaft 2 to the second one-way rotary clutch 3 axially downward.
A small screw tightening device equipped with a gear shaft 62 for transmitting data to a.
JP5512683U 1983-04-12 1983-04-12 Small screw tightening device Granted JPS59160125U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5512683U JPS59160125U (en) 1983-04-12 1983-04-12 Small screw tightening device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5512683U JPS59160125U (en) 1983-04-12 1983-04-12 Small screw tightening device

Publications (2)

Publication Number Publication Date
JPS59160125U JPS59160125U (en) 1984-10-26
JPH0115477Y2 true JPH0115477Y2 (en) 1989-05-09

Family

ID=30185450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5512683U Granted JPS59160125U (en) 1983-04-12 1983-04-12 Small screw tightening device

Country Status (1)

Country Link
JP (1) JPS59160125U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059657A (en) * 1973-09-27 1975-05-23
JPS5131720A (en) * 1974-09-12 1976-03-18 Mitsuboshi Ind Kasadakafushokufuokizaitoseru asufuarutoruufuingu oyobi sonoseizohoho
JPS55150979A (en) * 1979-05-15 1980-11-25 Matsushita Electric Works Ltd Electric driver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015661Y2 (en) * 1981-03-12 1985-05-16 三和テッキ株式会社 hydraulic tightening tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059657A (en) * 1973-09-27 1975-05-23
JPS5131720A (en) * 1974-09-12 1976-03-18 Mitsuboshi Ind Kasadakafushokufuokizaitoseru asufuarutoruufuingu oyobi sonoseizohoho
JPS55150979A (en) * 1979-05-15 1980-11-25 Matsushita Electric Works Ltd Electric driver

Also Published As

Publication number Publication date
JPS59160125U (en) 1984-10-26

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