JPH04128128U - automatic screw tightening machine - Google Patents
automatic screw tightening machineInfo
- Publication number
- JPH04128128U JPH04128128U JP3458791U JP3458791U JPH04128128U JP H04128128 U JPH04128128 U JP H04128128U JP 3458791 U JP3458791 U JP 3458791U JP 3458791 U JP3458791 U JP 3458791U JP H04128128 U JPH04128128 U JP H04128128U
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- head
- nut
- tightening
- automatic 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
(57)【要約】
【目的】 ボルトとナットとの軸芯のズレを吸収するこ
とにより，上記ボルトとナットを同一軸芯で円滑に締め
付けることのできる自動ネジ締め機の提供。
【構成】 上記自動ネジ締め機１においては，締め付け
ヘッド２に駆動軸１１の軸芯と直角な平面部６が設けら
れ，支持筒４の上記平面部６との対向面に弾性軸受７が
設けられている。この弾性軸受７のボール８は上記平面
部６と接触し回転自在に支持され，さらにケーシング１
０内に装入されたスプリング９によって上記平面部６の
方向へ弾性的に支持されている。従って，ボルト２５と
ナットの軸芯のズレは，上記平面部６がボール８を駆動
軸１１に向けて押動することにより吸収される。それに
より，ボルト２５はナットに同一軸芯で円滑に締め付け
られる。
(57) [Summary] [Purpose] To provide an automatic screw tightening machine that can smoothly tighten the bolts and nuts on the same axis by absorbing misalignment of the axes of the bolts and nuts. [Structure] In the automatic screw tightening machine 1, the tightening head 2 is provided with a flat portion 6 that is perpendicular to the axis of the drive shaft 11, and an elastic bearing 7 is provided on the surface of the support tube 4 facing the flat portion 6. It is being The balls 8 of the elastic bearing 7 are rotatably supported in contact with the flat portion 6, and are further supported by the casing 1.
It is elastically supported in the direction of the flat part 6 by a spring 9 inserted into the flat part 6. Therefore, misalignment between the axes of the bolt 25 and the nut is absorbed by the flat portion 6 pushing the ball 8 toward the drive shaft 11. Thereby, the bolt 25 is smoothly tightened to the nut with the same axis.
Description
【０００１】0001
本考案は，ナット又はボルト等を自動的に締め付ける自動ネジ締め機の改良に 関する。 This invention is an improvement of an automatic screw tightening machine that automatically tightens nuts or bolts. related.
【０００２】0002
ボルト又はナットを自動的に相互に嵌合させ，これらを締め付けるためには， 上記ボルト又はナットを装着した締め付けヘッドの軸芯と，上記ボルト又はナッ トを自動的に調芯する技術が必要であるが，上記締め付けヘッドと回転駆動軸と を自在継手を介して連結することにより従来より上記調芯技術が実現化されてい る。 例えば実開昭６２−１７２５２７号公報に開示の自動ネジ締め機によれば，締 め付けヘッドに接触したボルト又はナットが上記締め付けヘッドに嵌合していく 過程で，上記締め付けヘッドはその軸芯に傾きを与えることなく半径方向に移動 して上記ボルト又はナットに対して調芯される機構が採用されている。 ところで，ボルトの自動締め付けを行う場合に対応しなければならない軸芯の ズレとしては，上記締め付けヘッドの軸芯と，ボルトの軸芯との半径方向の偏心 の他にボルトの軸芯とナットの軸芯との傾きがある。 例えば，前者のズレ（偏心）としては，図３に示すように，締め付けヘッド２ a の軸芯Ｌ2 に対しボルト２５の軸芯Ｌ1 が半径方向にズレ幅ｍ分ズレている場 合である。このような場合，上記従来の自動ネジ締め機によれば，締め付けヘッ ド２a がボルト２５に向けて駆動されてボルト２５のボルト頭に接触すると，上 記締め付けヘッド２a はその軸芯を傾けることなく半径方向に移動して上記ボル ト頭と嵌合するようになっている。 また例えば，上記後者のズレが生じるのは，図４に示すように，例えばボルト ２５の軸芯Ｌ1 が締め付けヘッド２と同じ軸芯方向にありナット２６の軸芯Ｌn に対しズレ角θ傾いた状態でボルト２５がナット２６に差し込まれている場合で ある。このような場合，ボルト２５はその軸芯方向のままでナット２６に締め付 けられる。 To automatically fit bolts or nuts together and tighten them, The axis of the tightening head with the above bolt or nut attached and the axis of the above bolt or nut attached. However, technology to automatically align the tightening head and the rotating drive shaft is necessary. Conventionally, the above alignment technology has been realized by connecting the Ru. For example, according to the automatic screw tightening machine disclosed in Japanese Utility Model Application No. 62-172527, The bolt or nut that came into contact with the fitting head will fit into the tightening head. In the process, the tightening head moves in the radial direction without tilting its axis. A mechanism is adopted in which the shaft is aligned with the bolt or nut. By the way, when automatically tightening bolts, the shaft center must be adjusted. The misalignment is caused by eccentricity in the radial direction between the axis of the tightening head and the axis of the bolt. In addition, there is an inclination between the axis of the bolt and the axis of the nut. For example, as for the former misalignment (eccentricity), as shown in Fig. 3, the tightening head 2 a axis L2axial center L of bolt 251If there is a deviation in the radial direction by the deviation width m, This is the case. In such a case, according to the conventional automatic screw tightening machine mentioned above, the tightening head Do 2aWhen the bolt is driven toward the bolt 25 and contacts the bolt head of the bolt 25, the upper Tightening head 2amoves in the radial direction without tilting its axis. It is designed to fit with the head. For example, as shown in Figure 4, the reason for the latter misalignment is that, for example, the bolt 25 axis center L1is in the same axial direction as the tightening head 2, and the axial center L of the nut 26n When the bolt 25 is inserted into the nut 26 with the deviation angle θ inclined to be. In such a case, tighten the bolt 25 to the nut 26 while keeping its axial direction. I get kicked.
【０００３】0003
ところが，上記したように，ボルト２５の軸芯Ｌ2 がナット２６の軸芯Ｌn に 対し傾いた状態でボルト２５がナット２６にネジ止めされると，ボルト２５のネ ジ部が焼き付く場合があった。 そこで，本考案の目的とするところは，締め付けヘッドとボルトの軸芯のズレ を吸収するのみならず，ボルトとナットの軸芯のズレをも吸収することにより， 上記ボルトをナットに円滑に締め付けることのできる自動ネジ締め機を提供する ことにある。However, as described above, if the bolt 25 is screwed into the nut 26 with the axis L 2 of the bolt 25 inclined with respect to the axis L n of the nut 26, the threaded portion of the bolt 25 may seize. Ta. Therefore, the purpose of this invention is to not only absorb the misalignment of the axes of the tightening head and the bolt, but also the misalignment of the axes of the bolt and nut, thereby allowing the bolt to be smoothly tightened into the nut. Our objective is to provide an automatic screw tightening machine that can
【０００４】0004
上記目的を達成するために，本考案が採用する主たる手段は，その要旨とする ところが，先端にナット又はボルト頭を嵌着する装着孔を有する締め付けヘッド を，筒状体内で回転する自在継手を介して駆動軸に連結してなる自動ネジ締め機 において，上記筒状体と上記締め付けヘッドの対向面の一方に，上記駆動軸の軸 芯と直角な平面部を設け，他方の対向面に上記平面部と接触し回転自在に支持さ れたボールを設け，該ボールを上記平面部の方向へ弾性的に支持した点に係る自 動ネジ締め機として構成されている。 In order to achieve the above purpose, the main means adopted by this invention are as follows: However, a tightening head that has a mounting hole at the tip into which a nut or bolt head is inserted is connected to a drive shaft via a universal joint that rotates inside a cylindrical body. , the shaft of the drive shaft is attached to one of the opposing surfaces of the cylindrical body and the tightening head. A flat part perpendicular to the core is provided, and the other opposing surface is in contact with the flat part and supported rotatably. A self-contained ball is provided, and the ball is elastically supported in the direction of the plane part. It is configured as a dynamic screw tightening machine.
【０００５】[0005]
本考案に係る自動ネジ締め機においては，駆動軸の軸芯と直角な平面部が筒状 体と締め付けヘッドの対向面の一方に設けられ，上記平面部と接触し回転自在の ボールが他方の対向面に支持されて設けられているので，締め付けヘッドの装着 孔に例えばボルト頭が嵌着したとき，上記締め付けヘッドは上記平面部を駆動軸 の軸芯と直角な方向に移動される。これによって，例えばボルトと締め付けヘッ ドの軸芯のズレが吸収される。一方，上記ボールは上記他方の対向面に上記平面 部の方向へ弾性的に支持されているので，上記締め付けヘッドは上記駆動軸の軸 芯と直角な方向へ揺動可能である。これによって，上記締め付けヘッドに嵌着さ れた例えばボルトとナットとの軸芯のズレが吸収される。 In the automatic screw tightening machine according to the present invention, the flat part perpendicular to the axis of the drive shaft is cylindrical. It is provided on one side of the opposing surface of the body and the tightening head, and is in contact with the above flat part and is rotatable. Since the ball is supported on the other opposing surface, it is easy to attach the tightening head. For example, when a bolt head is fitted into the hole, the tightening head connects the flat part to the drive shaft. is moved in a direction perpendicular to the axis of This allows for example bolts and clamping heads to The misalignment of the axis of the card is absorbed. On the other hand, the above ball has the above flat surface on the other opposing surface. The tightening head is supported elastically in the direction of the drive shaft. It can swing in the direction perpendicular to the core. This allows the bolt to fit onto the tightening head mentioned above. For example, misalignment between bolts and nuts can be absorbed.
【０００６】[0006]
以下添付図面を参照して，本考案を具体化した実施例につき説明し，本考案の 理解に供する。尚，以下の実施例は，本考案を具体化した一例であって，本考案 の技術的範囲を限定する性格のものではない。 ここに，図１は本考案の一実施例に係る自動ネジ締め機の要部を示す側断面図 ，図２は上記自動ネジ締め機に用いられる弾性軸受を示す側断面図である。 本実施例に係る自動ネジ締め機１は，図１に示すように，先端にナット又はボ ルト頭を嵌着する装着孔３を有する締め付けヘッド２のヘッド軸部１９と駆動軸 １１とを自在継手５を介して連結してなっている。上記ヘッド軸部１９及び自在 継手５は円筒状の支持筒４内で回転自在に配備されている。上記締め付けヘッド ２には，駆動軸１１の軸芯と直角な平面部６が形成され，この平面部６に対向す る支持筒４先端の対向面には，適当な数の弾性軸受７が埋設されている。また， 締め付けヘッド２の外周に沿ってベアリング１６が固設されている。そして，締 め付けヘッド２は，上記支持筒４の先端内周面に対しベアリング１６及び弾性部 材１８を介して弾性的に支持されている。上記弾性部材１８は締め付けヘッド２ が外部からの負荷を受けていないとき，締め付けヘッド２を支持筒４のほぼ軸芯 の位置に配置させるように作用する。 そして，支持筒４には案内孔１４が穿設されている。また，上記案内孔１４を 通して端部が外部に突出した状態の付勢板１５が上記支持筒４内に配備されてい る。上記付勢板１５は支持筒４の外周に配設されたスプリング１３によって駆動 軸１１に向けて付勢されている。更に，締め付けヘッド２のヘッド軸１９はベア リング２０を介して上記付勢板１５に回動自在に支持されている。これによって ，締め付けヘッド２の平面部６は上記スプリング１３の付勢力によって弾性軸受 ７のボール８に押し付けられることになる。 上記弾性軸受７は，図２に示すように，中空状のケーシング１０の内部に装入 されたスプリング９によってボール８を図中矢印Ａ方向に付勢してケーシング１ ０の先端に回動自在に支持している。 Below, examples embodying the present invention will be explained with reference to the attached drawings, and the embodiments of the present invention will be explained. Provide for understanding. The following example is an example of embodying the present invention. It is not intended to limit the technical scope of. Here, FIG. 1 is a side sectional view showing the main parts of an automatic screw tightening machine according to an embodiment of the present invention. , FIG. 2 is a side sectional view showing an elastic bearing used in the automatic screw tightening machine. As shown in Fig. 1, the automatic screw tightening machine 1 according to this embodiment has a nut or a bolt at the tip. The head shaft portion 19 of the tightening head 2 having the mounting hole 3 into which the bolt head is fitted and the drive shaft 11 are connected via a universal joint 5. The head shaft portion 19 and the free The joint 5 is rotatably arranged within the cylindrical support tube 4. Tightening head above 2 is formed with a flat part 6 that is perpendicular to the axis of the drive shaft 11, and a flat part 6 facing this flat part 6 is formed on the drive shaft 11. An appropriate number of elastic bearings 7 are embedded in the opposing surface of the tip of the support cylinder 4. Also, A bearing 16 is fixedly installed along the outer periphery of the tightening head 2. And tighten The fitting head 2 attaches a bearing 16 and an elastic part to the inner peripheral surface of the tip of the support tube 4. It is elastically supported via a material 18. The elastic member 18 is attached to the tightening head 2 is not receiving any external load, the tightening head 2 is positioned approximately at the axis of the support tube 4. It acts to place it in the position of. A guide hole 14 is formed in the support tube 4. In addition, the guide hole 14 A biasing plate 15 with an end protruding outward through the support tube 4 is disposed within the support tube 4. Ru. The biasing plate 15 is driven by a spring 13 disposed around the outer circumference of the support tube 4. It is biased toward the shaft 11. Furthermore, the head shaft 19 of the tightening head 2 is It is rotatably supported by the biasing plate 15 via a ring 20. by this , the flat part 6 of the tightening head 2 is elastically bearing due to the biasing force of the spring 13. It will be pressed against the ball 8 of 7. The elastic bearing 7 is inserted into a hollow casing 10 as shown in FIG. The ball 8 is urged in the direction of arrow A in the figure by the spring 9, and the casing 1 is It is rotatably supported at the tip of 0.
【０００７】 本実施例の自動ネジ締め機１は上記したように構成されている。 そこで，ボルトの自動ネジ締め動作を行う際には，図１に示すように，駆動軸 １１が回転駆動されると共に，例えば図外のナットに仮止めされたボルト２５の ボルト頭に向けて上記自動ネジ締め機１が移動する。この場合，締め付けヘッド ２の軸芯とボルト２５の軸芯とにズレがあると，上記締め付けヘッド２がボルト 頭に接触したとき，上記ボルト頭と装着孔３の嵌合形状の関係から，上記締め付 けヘッド２はボルト２５の軸芯と一致する位置まで半径方向に移動される。これ によって，上記締め付けヘッド２の装着孔３とボルト頭とが嵌合し，ボルト２５ がナットに締め付けられる。 一方，上記ナットが駆動軸１１の軸芯とズレた配置で設けられ，このナットに ボルト２５が上記駆動軸１１の軸芯方向に仮止めされていた場合，このときのボ ルト２５と締め付けヘッド２の軸芯のズレは，上記したと同様に締め付けヘッド ２の半径方向への移動により吸収され，装着孔３にボルト頭が嵌合される。続い て，ボルト２５が駆動軸１１の回転駆動力によりナットに締め付けられていくと き，上記ボルト２５にはこのボルト２５をナットの軸芯方向に傾ける付勢力が働 きこの付勢力が締め付けヘッド２に伝達される。上記締め付けヘッド２は，上記 付勢力の働く側の弾性軸受７のボール８を駆動軸１１に向けてスプリング９の付 勢力に抗して押し戻し，上記ナットの軸芯方向に傾く。これによって，上記ボル ト２５とナットとの軸芯のズレが吸収され，上記ボルト２５はナットと同一軸芯 で円滑に締め付けられる。 なお，上記した実施例では，駆動軸１１の軸芯と直角の平面部６を締め付けヘ ッド２に設け，上記平面部６に対向する支持筒４の対向面に弾性軸受７を配備し たが，上記弾性軸受７を締め付けヘッド２に設け，この弾性軸受７に対向する支 持筒４の対向面を平面部としてもよい。[0007] The automatic screw tightening machine 1 of this embodiment is configured as described above. Therefore, when performing automatic bolt tightening operation, as shown in Figure 1, the drive shaft 11 is rotated and, for example, a bolt 25 temporarily fastened to a nut (not shown) is rotated. The automatic screw tightening machine 1 moves toward the bolt head. In this case, the tightening head If there is a misalignment between the axial center of the bolt 25 and the axial center of the bolt 25, the tightening head 2 When it comes into contact with the bolt head, due to the fitting shape of the bolt head and the mounting hole 3, the tightening described above is not possible. The head 2 is moved in the radial direction to a position that coincides with the axis of the bolt 25. this As a result, the mounting hole 3 of the tightening head 2 and the bolt head fit together, and the bolt 25 is tightened to the nut. On the other hand, the above-mentioned nut is provided in a position shifted from the axis of the drive shaft 11, and this nut If the bolt 25 is temporarily fastened in the axial direction of the drive shaft 11, the bolt at this time The misalignment between the axes of the bolt 25 and the tightening head 2 can be determined by the tightening head as described above. 2 is absorbed by the movement in the radial direction, and the bolt head is fitted into the mounting hole 3. Continued When the bolt 25 is tightened to the nut by the rotational driving force of the drive shaft 11, A biasing force acts on the bolt 25 to tilt the bolt 25 in the axial direction of the nut. This biasing force is transmitted to the tightening head 2. The above tightening head 2 is Attach the spring 9 by pointing the ball 8 of the elastic bearing 7 on the side where the biasing force acts toward the drive shaft 11. It is pushed back against the force and tilted in the direction of the axis of the nut. As a result, the above voltage The misalignment of the axes between the bolt 25 and the nut is absorbed, and the bolt 25 is aligned with the nut. can be tightened smoothly. In addition, in the above-described embodiment, the flat part 6 perpendicular to the axis of the drive shaft 11 is tightened. An elastic bearing 7 is provided on the support tube 4 on the opposite surface of the support tube 4 facing the flat portion 6. However, the above-mentioned elastic bearing 7 is provided on the tightening head 2, and a support opposite to this elastic bearing 7 is provided. The opposing surface of the holding cylinder 4 may be a flat surface.
【０００８】[0008]
本考案によれば，先端にナット又はボルト頭を嵌着する装着孔を有する締め付 けヘッドを，筒状体内で回転する自在継手を介して駆動軸に連結してなる自動ネ ジ締め機において，上記筒状体と上記締め付けヘッドの対向面の一方に，上記駆 動軸の軸芯と直角な平面部を設け，他方の対向面に上記平面部と接触し回転自在 に支持されたボールを設け，該ボールを上記平面部の方向へ弾性的に支持したこ とを特徴とする自動ネジ締め機が提供される。これによって，ボルト又はナット と締め付けヘッドとの軸芯のズレはもとより，上記ボルトとナットとの軸芯のズ レをも吸収することができる。従って，上記ボルトとナットとを同軸芯で円滑に 締め付けることが可能である。 According to the present invention, a tightening bolt having a mounting hole at the tip into which a nut or bolt head is fitted is provided. This is an automatic screwdriver in which the cutting head is connected to the drive shaft via a universal joint that rotates inside the cylindrical body. In the screw tightening machine, the driving force is attached to one of the opposing surfaces of the cylindrical body and the tightening head. A flat part perpendicular to the axis of the moving shaft is provided, and the other opposing surface is in contact with the flat part and can rotate freely. A ball supported on the plane is provided, and the ball is elastically supported in the direction of the plane part. An automatic screw tightening machine is provided. This allows the bolt or nut to Not only the misalignment between the bolt and the tightening head, but also the misalignment of the axle between the bolt and nut mentioned above. It can also absorb rays. Therefore, the above bolt and nut can be connected smoothly with coaxial core. It is possible to tighten.
【図１】 本考案の一実施例に係る自動ネジ締め機の要
部を示す側断面図。FIG. 1 is a side sectional view showing the main parts of an automatic screw tightening machine according to an embodiment of the present invention.
【図２】 上記自動ネジ締め機に用いられる弾性軸受を
示す側断面図。FIG. 2 is a side sectional view showing an elastic bearing used in the automatic screw tightening machine.
【図３】 本考案の背景の一例となる従来の自動ネジ締
め機の締め付けヘッドによるボルトとの調芯動作を示す
動作説明図。FIG. 3 is an operation explanatory diagram showing an alignment operation with a bolt by a tightening head of a conventional automatic screw tightening machine, which is an example of the background of the present invention.
【図４】 図３の締め付けヘッドの軸芯に対しズレた軸
芯で配置されているナットに対しボルトを取り付ける態
様を示す動作説明図。4 is an operation explanatory diagram showing a manner in which a bolt is attached to a nut that is disposed with an axis shifted from the axis of the tightening head shown in FIG. 3; FIG.
１…自動ネジ締め機 ２，２a …締め付けヘッド ３…装着孔 ４…支持筒 ５…自在継手 ６…平面部 ７…弾性軸受 ８…ボール ９…スプリング １０…ケーシング １１…駆動軸1... Automatic screw tightening machine 2, 2 a ... Tightening head 3... Mounting hole 4... Support tube 5... Universal joint 6... Flat part 7... Elastic bearing 8... Ball 9... Spring 10... Casing 11... Drive shaft
Claims (1)
着孔を有する締め付けヘッドを，筒状体内で回転する自
在継手を介して駆動軸に連結してなる自動ネジ締め機に
おいて，上記筒状体と上記締め付けヘッドの対向面の一
方に，上記駆動軸の軸芯と直角な平面部を設け，他方の
対向面に上記平面部と接触し回転自在に支持されたボー
ルを設け，該ボールを上記平面部の方向へ弾性的に支持
したことを特徴とする自動ネジ締め機。Claim 1: An automatic screw tightening machine comprising a tightening head having a mounting hole at its tip into which a nut or bolt head is fitted, connected to a drive shaft via a universal joint that rotates within a cylindrical body. A plane part perpendicular to the axis of the drive shaft is provided on one of the opposing surfaces of the body and the tightening head, a ball is provided on the other opposing surface and is rotatably supported in contact with the plane part, and the ball is An automatic screw tightening machine characterized by being elastically supported in the direction of the flat part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3458791U JPH04128128U (en) | 1991-05-16 | 1991-05-16 | automatic screw tightening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3458791U JPH04128128U (en) | 1991-05-16 | 1991-05-16 | automatic screw tightening machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04128128U true JPH04128128U (en) | 1992-11-24 |
Family
ID=31916954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3458791U Pending JPH04128128U (en) | 1991-05-16 | 1991-05-16 | automatic screw tightening machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04128128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016526646A (en) * | 2013-07-09 | 2016-09-05 | クボティックス インコーポレイテッド | Torque transmission in a laterally engaged drive coupler showing axial misalignment with the driven coupler |
-
1991
- 1991-05-16 JP JP3458791U patent/JPH04128128U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016526646A (en) * | 2013-07-09 | 2016-09-05 | クボティックス インコーポレイテッド | Torque transmission in a laterally engaged drive coupler showing axial misalignment with the driven coupler |
| US9982722B2 (en) | 2013-07-09 | 2018-05-29 | Solarcity Corporation | Torque transfer in laterally engaging drive couplers exhibiting axial misalignment with driven couplers |
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