JPH0665448B2 - Bolt tightening machine - Google Patents
Bolt tightening machineInfo
- Publication number
- JPH0665448B2 JPH0665448B2 JP17319186A JP17319186A JPH0665448B2 JP H0665448 B2 JPH0665448 B2 JP H0665448B2 JP 17319186 A JP17319186 A JP 17319186A JP 17319186 A JP17319186 A JP 17319186A JP H0665448 B2 JPH0665448 B2 JP H0665448B2
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- socket
- tightening machine
- head
- hole
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
【発明の詳細な説明】 A.発明の目的 （１）産業上の利用分野 本発明は、部材に仮螺合されたボルトを締付るためのボ
ルト締付機に関する。DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Field of Industrial Application The present invention relates to a bolt tightening machine for tightening a bolt temporarily screwed into a member.
（２）従来の技術 従来、かかるボルト締付機として、ボルトに対しその軸
方向に進退可能な軸受筒に、回転駆動源から駆動される
回転軸を支承し、この回転軸に、ボルトの頭部に係合し
得るソケット孔を先端に開口したボルトソケットを連結
したものが広く知られている。(2) Conventional Technology Conventionally, as such a bolt tightening machine, a rotating shaft driven from a rotary drive source is supported on a bearing tube which can advance and retreat in the axial direction of the bolt, and the rotating shaft drives the head of the bolt. It is widely known that a bolt socket having a socket hole that can be engaged with a portion opened at the tip is connected.
（３）発明が解決しようとする問題点 従来のボルト締付機では、締付るべきボルトの頭部にボ
ルトソケットを接近させたとき、両者の軸線が相互に大
きくずれていると、ボルトソケットがボルトの頭部上面
に衝き当って空転するのみで、ボルトを締付ることはで
きない。したがって、ボルトソケットをボルトに接近さ
せる際には、常に両者の軸線を正確に整合させる必要が
あるが、その整合作業は面倒であり、特に、多数のボル
トを一挙に締付けるようにした多軸式のボルト締付機で
は、全部のボルトソケットを対応するボルトの軸線に正
確に整合させることは極めて困難である。(3) Problems to be Solved by the Invention In the conventional bolt tightening machine, when the bolt sockets are brought close to the heads of the bolts to be tightened, if the axes of the two are largely deviated from each other, the bolt sockets will be greatly displaced from each other. Can hit the upper surface of the head of the bolt and slip, but cannot tighten the bolt. Therefore, when approaching the bolt socket to the bolt, it is always necessary to accurately align the axes of the two, but the alignment work is troublesome, and in particular, the multi-axis type that tightens many bolts at once In the bolt tightening machine described in (1), it is extremely difficult to accurately align all the bolt sockets with the axes of the corresponding bolts.
本発明は、かかる事情に鑑みてなされたもので、ボルト
ソケットのボルトへの接近時、ボルトソケットがボルト
の頭部上面から逸脱しない範囲で両者の軸線が相互に大
きくずれていても、ボルトソケットをボルトに的確に係
合させてそれを確実に締付け得る前記ボルト締付機を提
供することを目的とする。The present invention has been made in view of the above circumstances, and when the bolt socket approaches the bolt, even if the axes of the two are largely deviated from each other within a range that does not deviate from the upper surface of the head of the bolt, the bolt socket is It is an object of the present invention to provide a bolt tightening machine capable of accurately engaging a bolt with a bolt and securely tightening the bolt.
B.発明の構成 （１）問題点を解決するための手段 上記目的を達成するために、本発明は、ボルトに対しそ
の軸方向に進退可能な軸受筒と、この軸受筒に支承され
て回転駆動源に連なる回転軸と、この回転軸に自在接手
を介して連結され、先端にボルトの頭部に係合し得るソ
ケット孔を開口したボルトソケットと、このボルトソケ
ットを回転軸との同軸方向に付勢する弾性手段とからボ
ルト締付機を構成すると共に、ボルトソケットの先端に
ソケット孔を囲む多数の突起を設けたことを特徴とす
る。B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention is directed to a bearing cylinder which is capable of advancing and retracting in the axial direction of a bolt, and a bearing which is supported by the bearing cylinder to rotate. A rotary shaft connected to the drive source, a bolt socket that is connected to the rotary shaft through a free joint, and has a socket hole at the tip that can engage with the head of the bolt, and the bolt socket is coaxial with the rotary shaft. It is characterized in that a bolt tightening machine is composed of elastic means for urging the bolt and a plurality of projections surrounding the socket hole are provided at the tip of the bolt socket.
（２）作 用 部材のねじ孔に仮螺合されたボルトに回転するボルトソ
ケットを接近させたとき、両者相互の軸線のずれにより
ボルトソケットの先端がボルトの頭部上面に当接する
と、ボルトソケット先端の一部の突起が上記頭部上面に
強く押圧され、その突起を支点としてボルトソケットは
円錐運転を起こして弾性手段を変形させる。すると、弾
性手段の反発力により前記突起がボルトの頭部上面を滑
り、ボルトソケットは原位置に復帰しようとし、その復
帰動作中にボルトソケットのソケット孔とボルト頭部と
が一致し、両者の係合状態が得られる。(2) When the rotating bolt socket is brought close to the bolt temporarily screwed into the screw hole of the working member, if the tip of the bolt socket comes into contact with the upper surface of the head of the bolt due to the misalignment of the axes of the two, the bolt A part of the projection at the tip of the socket is strongly pressed against the upper surface of the head, and the projection is used as a fulcrum to cause the bolt socket to perform a conical operation to deform the elastic means. Then, due to the repulsive force of the elastic means, the protrusion slides on the upper surface of the head of the bolt, the bolt socket tries to return to the original position, and during the returning operation, the socket hole of the bolt socket and the bolt head are aligned, and An engaged state is obtained.
（３）実施例 以下、図面により本発明の一実施例について説明する
と、第１図において第１部材１に第２部材２を固着する
ために、第２部材２を貫通して第１部材１のねじ孔1aに
仮螺合されたボルト３が本発明のボルト締付機４により
締付られる。(3) Example Hereinafter, one example of the present invention will be described with reference to the drawings. In order to fix the second member 2 to the first member 1 in FIG. 1, the first member 1 is penetrated through the second member 2. The bolt 3 temporarily screwed into the screw hole 1a is tightened by the bolt tightening machine 4 of the present invention.
ボルト締付機４は、図示しない機台に昇降可能に取付け
られた軸受筒５を有し、この軸受筒５には、エアモータ
等の回転駆動源により駆動される回転軸６が支承され、
その下端は軸受筒５の下端面から突出している。この回
転軸６の下端には、第１自在接手71を介して伸縮軸８の
筒状外側軸8aが連結され、その内側軸8bに第２自在接手
72を介してボルトソケット９が連結される。このボルト
ソケット９は、前記ボルト３の頭部3aに係合し得る六角
形のソケット孔9aを下端に開口している。The bolt tightening machine 4 has a bearing cylinder 5 mounted on a machine base (not shown) so as to be able to move up and down. A rotary shaft 6 driven by a rotary drive source such as an air motor is supported by the bearing cylinder 5.
The lower end thereof projects from the lower end surface of the bearing sleeve 5. The lower end of the rotary shaft 6, the tubular outer shaft 8a of the telescopic shaft 8 via the first universal catch 7 1 is connected, a second freely inside shaft 8b catch
Bolt socket 9 is connected via the 7 2. The bolt socket 9 has a hexagonal socket hole 9a that can be engaged with the head 3a of the bolt 3 at the lower end.
前記外側及び内側軸8a,8bは互いに摺動自在にスプライ
ン嵌合され、これらの摺動により伸縮軸８の伸縮が可能
である。この伸縮軸８の伸縮ストロークを規定するため
に、内側軸8bに穿設されてその軸方向に長径を向けた長
孔10に、外側軸8aに固着した連結ピン11が摺動自在に嵌
入される。即ち、連結ピン11が長孔10の長手方向両端壁
に当接することにより伸縮軸８の伸縮ストロークが規制
される。上記内，外側軸8a,8b間にはこれらを伸長方向
に弾発するばね17が介装される。The outer and inner shafts 8a and 8b are spline-fitted slidably with each other, and the telescopic shaft 8 can be expanded and contracted by these sliding movements. In order to define the expansion / contraction stroke of the expansion / contraction shaft 8, a connecting pin 11 fixed to the outer shaft 8a is slidably fitted into a long hole 10 bored in the inner shaft 8b and having a major axis in the axial direction. It That is, the expansion / contraction stroke of the expansion / contraction shaft 8 is restricted by the connecting pin 11 contacting both end walls of the elongated hole 10 in the longitudinal direction. A spring 17 is interposed between the inner and outer shafts 8a and 8b to elastically repel them in the extension direction.
軸受筒５には、その下端面から突出してボルトソケット
９を囲繞する支筒12が連設され、この支筒12の下端部に
は、ボルトソケット９を回転自在に支承すると共に回転
軸６との同軸位置へ付勢する弾性手段としての弾性部材
13が装着される。即ち、弾性部材13はドーナツ形のゴム
袋14内に空気15を封入して構成され、ゴム袋14の外周壁
が支筒12の内周面に接着され、その内周壁によりボルト
ソケット９が回転自在に支承される。The bearing cylinder 5 is continuously provided with a support cylinder 12 projecting from the lower end surface thereof and surrounding the bolt socket 9. The lower end portion of the support cylinder 12 rotatably supports the bolt socket 9 and the rotation shaft 6. Member as elastic means for urging the same to the coaxial position
13 is installed. That is, the elastic member 13 is configured by enclosing air 15 in a donut-shaped rubber bag 14, the outer peripheral wall of the rubber bag 14 is adhered to the inner peripheral surface of the support cylinder 12, and the bolt socket 9 is rotated by the inner peripheral wall. Freely supported.
ボルトソケット９の下端には、第２図に明示するように
な多数の突起16,16…がソケット孔9aを囲むように環状
に配列して形成される。At the lower end of the bolt socket 9, as shown in FIG. 2, a large number of protrusions 16, 16 ... Are formed in an annular shape so as to surround the socket hole 9a.
次にこの実施例の作用を説明する。Next, the operation of this embodiment will be described.
いま、ねじ孔1aに予め緩く仮螺合したボルト３を締付る
べく、ボルト締付機４の回転軸６を図示しないエアモー
タにより回転させて軸受筒５をボルト３に向って下降さ
せる。このとき、第１図に示すように、ボルトソケット
９がボルト３の頭部3a上面から逸脱しない範囲でボルト
３の軸線からずれていると、先ずボルトソケット９の先
端がボルト３の頭部3aの上面に当接して下降を阻止され
るが、軸受筒５は下降し続けるので、伸縮軸８がばね17
の弾発力に抗して収縮しながら、回転するボルトソケッ
ト９をボルト３の頭部3aに押圧する。Now, in order to tighten the bolt 3 loosely preliminarily screwed into the screw hole 1a, the rotating shaft 6 of the bolt tightening machine 4 is rotated by an air motor (not shown) to lower the bearing cylinder 5 toward the bolt 3. At this time, as shown in FIG. 1, if the bolt socket 9 is displaced from the axis of the bolt 3 within a range that does not deviate from the upper surface of the head 3a of the bolt 3, first, the tip of the bolt socket 9 will be the head 3a of the bolt 3. Although it comes in contact with the upper surface of the shaft and is prevented from descending, the bearing cylinder 5 continues to descend, so
The rotating bolt socket 9 is pressed against the head portion 3a of the bolt 3 while contracting against the elastic force of.
ところで、ボルトソケット９は、前述のように端面に多
数の突起16,16…を備えているので、それらの一部の突
起16がボルト３の頭部3a上面に強く押圧されることにな
り、その突起16を支点としてボルトソケット９は第３図
及び第５図に示すように円錐運動をし、それに応じて弾
性部材13を一方向に圧縮させる。そして、弾性部材13の
反発力が突起16とボルト３の頭部3aとの摩擦力より大き
くなると、突起16が頭部3a上を滑ってボルトソケット９
は原位置に復帰しようとし、その復帰動作の途中でボル
トソケット９のソケット孔9aとボルト３の頭部3aとが合
致すれば、第４図に示すようにばね17の弾発力により伸
縮軸８は伸長してボルトソケット９をボルト３の頭部3a
に係合させる。By the way, since the bolt socket 9 has a large number of protrusions 16, 16 ... on its end face as described above, some of these protrusions 16 are strongly pressed against the upper surface of the head 3a of the bolt 3, With the projection 16 as a fulcrum, the bolt socket 9 makes a conical movement as shown in FIGS. 3 and 5, and accordingly the elastic member 13 is compressed in one direction. When the repulsive force of the elastic member 13 becomes larger than the frictional force between the protrusion 16 and the head 3a of the bolt 3, the protrusion 16 slides on the head 3a and the bolt socket 9
Tries to return to the original position, and if the socket hole 9a of the bolt socket 9 and the head 3a of the bolt 3 match during the return operation, the elastic shaft of the spring 17 causes the expansion / contraction axis as shown in FIG. 8 extends to connect the bolt socket 9 to the head 3a of the bolt 3.
Engage with.
係合後は、伸縮軸８が第1,第２自在接手71,72の首振り
作用により速度に傾き、ボルトソケット９及びボルト３
の軸線が相互に一致し、ボルトソケット９の回転により
ボルト３を締付ることができる。After the engagement, the telescopic shaft 8 tilts to the speed due to the swinging action of the first and second universal joints 7 1 and 7 2 , and the bolt socket 9 and the bolt 3
Since the axes of the bolts coincide with each other, the bolt 3 can be tightened by rotating the bolt socket 9.
C.発明の効果 以上のように本発明は、ボルトに対しその軸方向に進退
可能な軸受筒と、この軸受筒に支承されて回転駆動源に
連なる回転軸と、この回転軸に自在接手を介して連結さ
れ、先端にボルトの頭部に係合し得るソケット孔を開口
したボルトソケットと、このボルトソケットを回転軸と
の同軸方向に付勢する弾性手段とからボルト締付機を構
成すると共に、ボルトソケットの先端にソケット孔を囲
む多数の突起を設けたので、ボルトソケットをボルトに
接近させたとき、ボルトソケットがボルトの頭部上面か
ら外れない範囲で両者相互の軸線が大きくずれていて
も、ボルトソケットの円錐運転とそれに引続く原位置へ
の復帰動作により、ボルトソケットをボルトに的確に係
合させて、ボルトを締付ることができ、したがってボル
トソケットのボルトに対する整合いは大きな誤差が許容
され、ボルトの締付作業の能率向上に大いに寄与するこ
とができる。C. Effects of the Invention As described above, according to the present invention, a bearing cylinder that can advance and retreat in the axial direction of a bolt, a rotary shaft that is supported by the bearing cylinder and is connected to a rotary drive source, and a universal joint for the rotary shaft. A bolt tightening machine is composed of a bolt socket that is connected via a bolt hole and has a socket hole at its tip end that can be engaged with the head of the bolt, and an elastic means that urges the bolt socket in a direction coaxial with the rotating shaft. At the same time, a large number of projections surrounding the socket hole are provided at the tip of the bolt socket, so when the bolt socket is brought close to the bolt, the axes of the two are greatly displaced within the range in which the bolt socket does not come off the upper surface of the bolt head. However, the conical operation of the bolt socket and the subsequent returning to the original position allows the bolt socket to be accurately engaged with the bolt and the bolt to be tightened. Matching physician for bets bolt is allowed a large error, can contribute greatly to the efficiency improvement of the tightening operation of the bolt.
【図面の簡単な説明】 図面は本発明の一実施例を示すもので、第１図は本発明
のボルト締付機及びこれにより締付けるべきボルト周辺
部の縦断側面図、第２図は上記ボルト締付機におけるボ
ルトソケットの斜め下方から見た斜視図、第３図及び第
４図は第１図に対応した上記ボルト締付機の作動説明
図、第５図は第１図のＶ−Ｖ線断面図である。 １……部材、1a……ねじ孔、３……ボルト、3a……頭
部、４……ボルト締付機、５……軸受筒、６……回転
軸、９……ボルトソケット、9a……ソケット孔、13……
弾性手段としての弾性部材、16……突起BRIEF DESCRIPTION OF THE DRAWINGS The drawings show one embodiment of the present invention. FIG. 1 is a vertical sectional side view of a bolt tightening machine of the present invention and a bolt peripheral portion to be tightened by the bolt tightening machine, and FIG. FIG. 3 is a perspective view of the bolt socket of the tightening machine as seen from diagonally below, FIGS. 3 and 4 are operation explanatory views of the bolt tightening machine corresponding to FIG. 1, and FIG. 5 is VV of FIG. It is a line sectional view. 1 ... Member, 1a ... Screw hole, 3 ... Bolt, 3a ... Head, 4 ... Bolt tightening machine, 5 ... Bearing tube, 6 ... Rotating shaft, 9 ... Bolt socket, 9a ... … Socket holes, 13 ……
Elastic member as elastic means, 16 ...
Claims (1)
るためのボルト締付機であって、ボルトに対しその軸方
向に進退可能な軸受筒と、この軸受筒に支承されて回転
駆動源に連なる回転軸と、この回転軸に自在接手を介し
て連結され、先端にボルトの頭部に係合し得るソケット
孔を開口したボルトソケットと、このボルトソケットを
回転軸との同軸方向に付勢する弾性手段とからなり、ボ
ルトソケットの先端にソケット孔を囲む多数の突起を設
けたことを特徴とするボルト締付機。1. A bolt tightening machine for tightening a bolt temporarily screwed into a screw hole of a member, the bearing cylinder being capable of advancing and retracting in the axial direction with respect to the bolt, and being supported by the bearing cylinder. A rotary shaft connected to the rotary drive source, a bolt socket that is connected to the rotary shaft through a universal joint and has a socket hole at the tip that can engage with the head of the bolt, and the bolt socket A bolt tightening machine, comprising a plurality of protrusions surrounding a socket hole at the tip of a bolt socket, the bolt tightening machine comprising elastic means for biasing in the coaxial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17319186A JPH0665448B2 (en) | 1986-07-23 | 1986-07-23 | Bolt tightening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17319186A JPH0665448B2 (en) | 1986-07-23 | 1986-07-23 | Bolt tightening machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6334031A JPS6334031A (en) | 1988-02-13 |
| JPH0665448B2 true JPH0665448B2 (en) | 1994-08-24 |
Family
ID=15955781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17319186A Expired - Lifetime JPH0665448B2 (en) | 1986-07-23 | 1986-07-23 | Bolt tightening machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0665448B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5423371A (en) * | 1989-04-10 | 1995-06-13 | Adolf Hottinger Maschinenbau Gmbh | Method of and apparatus for screwing together parts with little strength |
| WO1990011848A1 (en) * | 1989-04-10 | 1990-10-18 | Adolf Hottinger Maschinenbau Gmbh | Process and device for screwing fragile parts |
| FR2652027A1 (en) * | 1989-09-18 | 1991-03-22 | Peugeot | Screwing socket |
| CN103659681A (en) * | 2012-09-17 | 2014-03-26 | 昆山尚达智机械有限公司 | Novel spanner |
| JP6121945B2 (en) * | 2014-05-30 | 2017-04-26 | ファナック株式会社 | Nutrunner tool with center run-out suppression mechanism |
| CN104308810A (en) * | 2014-10-28 | 2015-01-28 | 河南省平原水箱有限公司 | Assisting tool used during water tank radiator assembling |
| CN109759830B (en) * | 2019-04-12 | 2019-07-05 | 快克智能装备股份有限公司 | Magnetic-type nut lock pays mechanism |
| JP7135233B1 (en) * | 2022-03-29 | 2022-09-12 | 株式会社ジーテクト | Screw Dredging Modules and Screw Dredging Units |
-
1986
- 1986-07-23 JP JP17319186A patent/JPH0665448B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6334031A (en) | 1988-02-13 |
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