JP3169882U - Automatic nut caulking machine - Google Patents

Automatic nut caulking machine Download PDF

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JP3169882U
JP3169882U JP2011001451U JP2011001451U JP3169882U JP 3169882 U JP3169882 U JP 3169882U JP 2011001451 U JP2011001451 U JP 2011001451U JP 2011001451 U JP2011001451 U JP 2011001451U JP 3169882 U JP3169882 U JP 3169882U
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shaft
tip
caulking
nut
plus
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阪村 芳一
芳一 阪村
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株式会社阪村機械製作所
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Abstract

【課題】常に安定したカシメ止めが簡単容易にかつ自動的に行える自動ナットカシメ機を提供する。【解決手段】自動ナットカシメ機は、軸状本体11の先端側中心部に、ねじ軸の先端中心に形成されたプラス孔に係合離脱可能なプラス先端部12aを有する中心軸部12を設ける。軸状本体11の先端側に、プラス孔にプラス先端部が係合した状態において中心軸部を中心として半径方向に延びる保持部13を設ける。保持部13内に、半径方向にのみ摺動可能で半径方向内方への摺動によりナットのリング部を変形してねじ軸の溝内にカシメ止めするカシメ体14を支持する。保持部13内に軸方向に往復移動可能に支持され、かつ軸方向先端側への移動によりカシメ体14を半径方向内方へ摺動させるテーパー先端部15aを有する押込体15を内装し、かつ、押込体15を、回転駆動軸16を有する連動機構17を介して軸方向に往復移動させる正逆転駆動モータを設ける。【選択図】図2An automatic nut caulking machine capable of easily, easily and automatically performing a stable caulking stop at all times. An automatic nut caulking machine is provided with a central shaft portion 12 having a plus tip portion 12a that can be engaged and disengaged in a plus hole formed at the tip center of a screw shaft at the tip side center portion of a shaft-shaped main body 11. A holding portion 13 is provided on the distal end side of the shaft-shaped main body 11 so as to extend in the radial direction around the central shaft portion in a state where the plus distal end portion is engaged with the plus hole. In the holding portion 13, a crimping body 14 is supported which is slidable only in the radial direction and deforms the ring portion of the nut by sliding inward in the radial direction so as to be crimped in the groove of the screw shaft. A pusher 15 that is supported in the holding portion 13 so as to be reciprocally movable in the axial direction and has a tapered tip 15a that slides the caulking body 14 radially inward by movement toward the tip in the axial direction; and A forward / reverse drive motor for reciprocating the pusher 15 in the axial direction via an interlocking mechanism 17 having a rotary drive shaft 16 is provided. [Selection] Figure 2

Description

本考案は、ナットのねじ軸への締結後、ナットをねじ軸にカシメて回り止めするための自動ナットカシメ機に関するものである。  The present invention relates to an automatic nut caulking machine for fastening a nut to a screw shaft and fastening the nut after the nut is fastened to the screw shaft.

従来、たとえば自動車のタイヤを固定するナットのねじ軸に対する緩みを防止する手段として、ナットをねじ軸にカシメ止めするようにしたものが知られている。  2. Description of the Related Art Conventionally, for example, as a means for preventing loosening of a nut fixing a tire of an automobile with respect to a screw shaft, a method in which a nut is crimped to a screw shaft is known.

その場合、たとえば図6及び図7に示すようにナット2の端面に一体に突設形成されている変形可能なリング部aにタガネを当てて、ハンマーで叩きリング部aを内方へ変形させてねじ軸1の端部に設けられている溝b内に係合させてカシメ止めしている。  In that case, for example, as shown in FIGS. 6 and 7, the chisel is applied to the deformable ring portion a that is integrally formed on the end surface of the nut 2 and is hit with a hammer to deform the ring portion a inward. The screw shaft 1 is engaged and engaged with a groove b provided at the end of the screw shaft 1.

ところが、上記したタガネを用いた方法によると、叩き具合によってカシメ具合一定せず、緩み止め作用にバラツキが生ずる問題があり、また、強く叩き過ぎるとリング部aを破損するといったこともあった。さらに、ねじ軸1の端部に複数の溝bを設けて、これらの溝b内にナット2におけるリング部aの複数個所をカシメ止めする場合には、各箇所において個別にカシメ作業を行うため手間で時間がかかる問題を有していた。  However, according to the method using the above-mentioned chisel, there is a problem that the caulking condition is not constant depending on the hitting condition, and there is a problem that the loosening prevention action varies, and if the hitting is too strong, the ring part a may be damaged. Further, when a plurality of grooves b are provided at the end of the screw shaft 1 and a plurality of locations of the ring portion a in the nut 2 are caulked and stopped in these grooves b, the caulking work is individually performed at each location. It had the problem of taking time and labor.

そこで本考案は、上記のような問題点を解消し、常に安定したカシメ止めが簡単容易にかつ自動的に行える自動ナットカシメ機の提供を課題とする。  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automatic nut caulking machine that solves the above-mentioned problems and can always easily and automatically perform a stable caulking.

上記した問題を解決するため、本願の請求項1記載の考案は、ナットの端面に一体に突設形成されている変形可能なリング部を、ねじ軸の端部に設けられている溝内に自動的にカシメ止めする自動ナットカシメ機であって、軸状本体の先端側中心部に、上記ねじ軸の先端中心に形成されたプラス孔に係合離脱可能なプラス先端部を有する中心軸部を設けると共に、軸状本体の先端側に、上記プラス孔にプラス先端部が係合した状態において中心軸部を中心としてねじ軸の溝と同位相で半径方向に延びる保持部を設ける一方、この保持部内に、半径方向にのみ摺動可能で半径方向内方への摺動によりナットのリング部を変形してねじ軸の溝内にカシメ止めするカシメ体を支持すると共に、保持部内に軸方向に往復移動可能に支持され、かつ軸方向先端側への移動によりカシメ体を半径方向内方へ移動させるテーパー先端部を有する押込体を内装し、かつ、押込体を、回転駆動軸を有する連動機構を介して軸方向に往復移動させる正逆転駆動モータを備えていることを特徴とする。  In order to solve the above-described problem, the device according to claim 1 of the present application is configured such that the deformable ring portion formed integrally with the end face of the nut is formed in the groove provided at the end portion of the screw shaft. An automatic nut caulking machine for automatically crimping, wherein a central shaft portion having a plus tip portion that can be engaged with and detached from a plus hole formed at the tip center of the screw shaft is provided at the tip side center portion of the shaft-shaped main body. In addition, a holding portion that extends in the radial direction in the same phase as the groove of the screw shaft around the center shaft portion in a state where the plus tip portion is engaged with the plus hole is provided on the tip side of the shaft-shaped main body. Supports a caulking body that can be slid only in the radial direction and deforms the ring portion of the nut by sliding inward in the radial direction and is caulked in the groove of the screw shaft, and in the holding portion in the axial direction. Axial supported and reciprocally movable A pusher having a tapered tip that moves the caulking body inward in the radial direction by moving toward the tip side, and the pusher is moved back and forth in the axial direction via an interlocking mechanism having a rotary drive shaft. A reverse drive motor is provided.

また、本願の請求項2記載の考案は、請求項1記載の構成における回転駆動軸を有する連動機構を、正逆転駆動モータにより回転されかつウォームをもつ回転駆動軸と、ウォームに噛み合うラックを有する押込体とから構成したことを特徴とする。  Further, the invention described in claim 2 of the present application includes the interlocking mechanism having the rotation drive shaft in the configuration described in claim 1 having a rotation drive shaft rotated by a forward / reverse drive motor and having a worm, and a rack meshing with the worm. It is characterized by comprising a pusher.

さらに、本願の請求項3考案は、請求項2記載の構成において、軸状本体の先端部に保持体とカシメ体と押込体と回転駆動軸を有する連動機構とからなるカシメ手段を、所定間隔を置いて複数個設けたことを特徴とする。  Further, according to claim 3 of the present application, in the configuration according to claim 2, crimping means comprising a holding body, a crimping body, a pushing body, and an interlocking mechanism having a rotation drive shaft at a tip portion of the shaft-shaped main body is provided at a predetermined interval. It is characterized in that a plurality are provided.

上記した自動ナットカシメ機によれば、ナットのねじ軸への所定トルクでの締結後、ねじ軸の先端中心に形成されたプラス孔に自動ナットカシメ機のプラス先端部を差し込んで係合し、カシメ体をねじ軸の溝に位置合わせした係合状態のもとで正逆転モータを正回転させることにより、回転駆動軸を有する連動機構を介して押込体を軸方向先端側に移動させ、この押込体によりカシメ体を半径方向内方へ摺動させて、カシメ体でナットのリング部を所定の加圧力で変形してねじ軸1の溝内に圧入し自動的にカシメ止めすることができる。その結果、カシメ体によるカシメ具合を一定化でき、緩み止め作用にバラツキ発生をなくして確実な緩み止め効果が得られる。その上、強く叩き過ぎてリング部を破損するといった問題もなくすることができる。  According to the automatic nut caulking machine described above, after fastening with a predetermined torque to the screw shaft of the nut, the positive tip of the automatic nut caulking machine is inserted into and engaged with the plus hole formed at the center of the screw shaft. By rotating the forward / reverse rotation motor in a forward direction under the engaged state in which the screw is aligned with the groove of the screw shaft, the pusher is moved to the front end side in the axial direction via an interlocking mechanism having a rotation drive shaft. Thus, the caulking body can be slid inward in the radial direction, and the ring portion of the nut can be deformed with a predetermined pressing force by the caulking body and can be press-fitted into the groove of the screw shaft 1 to be automatically caulked. As a result, the degree of caulking by the caulking body can be made constant, and there is no variation in the anti-loosening action, and a reliable anti-loosening effect can be obtained. In addition, it is possible to eliminate the problem of hitting too hard and damaging the ring portion.

また、回転駆動軸を有する連動機構を、正逆転駆動モータにより回転されかつウォームをもつ回転駆動軸と、ウォームに噛み合うラックを有する押込体とから構成すれば、構造簡単でコンパクトにできるのでこのましい。  In addition, if the interlocking mechanism having a rotation drive shaft is composed of a rotation drive shaft rotated by a forward / reverse drive motor and having a worm, and a pushing body having a rack meshing with the worm, the structure can be simplified and made compact. Yes.

さらに、軸状本体の先端部に保持体とカシメ体と押込体と回転駆動軸を有する連動機構とからなるカシメ手段を、所定間隔を置いて複数個設けると共に、ねじ軸の端部に複数の溝を設けるようにすれば、これらの溝内にナットにおけるリング部の複数個所をカシメ止めする場合、複数の箇所において同時にカシメ作業を行うことができるので、カシメ作業の手間や時間を少なくすることができる。  Further, a plurality of crimping means including a holding body, a crimping body, a pushing body, and an interlocking mechanism having a rotation drive shaft are provided at a distal end portion of the shaft-shaped main body at a predetermined interval, and a plurality of crimping means are provided at the end of the screw shaft. If grooves are provided, when caulking and fixing a plurality of locations of the ring portion of the nut in these grooves, it is possible to perform caulking operations simultaneously at a plurality of locations, thereby reducing labor and time for caulking operations. Can do.

本考案に係る自動ナットカシメ機のカシメ直前の一部省略縦断面図である。It is a partially omitted vertical cross-sectional view immediately before caulking of the automatic nut caulking machine according to the present invention. 同自動ナットカシメ機のカシメ直後の一部省略縦断面図である。It is a partially-omission longitudinal cross-sectional view immediately after caulking of the automatic nut caulking machine. 本考案に係る自動ナットカシメ機の一部切欠正面図である。It is a partially cutaway front view of an automatic nut caulking machine according to the present invention. 同底面図である。It is the bottom view. ねじ軸にナットをカシメ止めした状態の平面図である。It is a top view in the state where a nut was crimped to a screw shaft. 従来の説明図である。It is conventional explanatory drawing. 同リング部付きナットの説明図である。It is explanatory drawing of the nut with a ring part.

以下本考案の実施の形態を図に基づいて説明する。  Embodiments of the present invention will be described below with reference to the drawings.

図1及び図2において、1はねじ軸であり、その先端部には、プラス孔1aと、カシメ用の溝1b,1bが外周の複数箇所(図示していないが180度の角度をおいて2箇所)に設けられている。また、2はねじ軸1に螺合されるナットであり、その端面には、変形可能なリング部2aが一体に突設形成されている。  1 and 2, reference numeral 1 denotes a screw shaft, and a plus hole 1a and caulking grooves 1b and 1b are formed at a plurality of positions on the outer periphery (not shown, but at an angle of 180 degrees). 2 places). Reference numeral 2 denotes a nut that is screwed onto the screw shaft 1, and a deformable ring portion 2a is integrally formed on the end surface of the nut.

図3及び図4は本考案に係る自動ナットカシメ機10を示し、該カシメ機10は軸状本体11の先端側中心部に、上記ねじ軸1の先端中心に形成されたプラス孔1aに係合離脱可能なプラス先端部12aを有する中心軸部12を設けると共に、軸状本体11の先端側に、上記プラス孔1aにプラス先端部12aが係合した状態において中心軸部12を中心としてねじ軸1の溝1b,1bと同位相で半径方向に延びる保持部13,13を左右対称に設ける一方、この保持部13,13内に半径方向にのみ摺動可能で、半径方向内方への摺動によりナット2のリング部2aを変形してねじ軸1の溝1b,1b内にカシメ止めするカシメ体14,14を支持すると共に、保持部13,13内に軸方向に移動可能に支持され、かつ軸方向先端側への移動によりカシメ体14,14を半径方向内方へ摺動させるテーパー先端部15aを有する押込体15,15を備え、かつ、押込体15,15を、回転駆動軸16,16を有する伝動機構17,17を介して軸方向に往復移動させる正逆転モータ18を備えている。この正逆転モータ18は図示しない操作レバーの操作によりオン・オフされる。また、カシメ体14の前端面はアール状14aに形成され、後端面は、押込体15のテーパー先端部15aと符合するテーパー背面部14bが形成されている。また、このカシメ体14は図示していないが、常時はバネ等により開放へ付勢させておき、押圧体の軸方向後方への移動に伴って自動的に半径方向外方へ復帰移動させるのがこのましい。  3 and 4 show an automatic nut caulking machine 10 according to the present invention. The caulking machine 10 is engaged with a plus hole 1a formed at the center of the tip end of the shaft-like body 11 at the tip center of the screw shaft 1. FIG. A central shaft portion 12 having a detachable plus tip portion 12a is provided, and a screw shaft is provided on the tip side of the shaft-shaped main body 11 with the plus tip portion 12a engaged with the plus hole 1a. The holding portions 13 and 13 extending in the radial direction in the same phase as the one groove 1b and 1b are provided symmetrically, and can be slid in the holding portions 13 and 13 only in the radial direction, and slide inward in the radial direction. The ring portion 2a of the nut 2 is deformed by movement to support the crimping bodies 14 and 14 that are caulked in the grooves 1b and 1b of the screw shaft 1, and are supported in the holding portions 13 and 13 so as to be movable in the axial direction. To the tip end side in the axial direction. Are provided with pressing bodies 15 and 15 having tapered tip portions 15a for sliding the caulking bodies 14 and 14 inward in the radial direction, and the pressing bodies 15 and 15 are provided with a transmission mechanism 17 having rotational drive shafts 16 and 16, respectively. A forward / reverse motor 18 that reciprocates in the axial direction via 17 is provided. The forward / reverse motor 18 is turned on / off by operating an operation lever (not shown). Further, the front end surface of the crimping body 14 is formed in a round shape 14 a, and the rear end surface is formed with a tapered back surface portion 14 b that coincides with the tapered front end portion 15 a of the pusher 15. Although the crimping body 14 is not shown, it is always biased to open by a spring or the like, and is automatically returned to the outside in the radial direction as the pressing body moves rearward in the axial direction. Is this.

回転駆動軸16を有する連動機構17としては、正逆転駆動モータにより回転される回転駆動軸の先端に設けたウォーム17aと、押込体15の内面に形成された上記ウォーム17aに噛み合うラック15bとから構成されている。  The interlocking mechanism 17 having the rotation drive shaft 16 includes a worm 17a provided at the tip of the rotation drive shaft rotated by a forward / reverse rotation drive motor, and a rack 15b meshed with the worm 17a formed on the inner surface of the pusher 15. It is configured.

次に、上記した自動ナットカシメ機の作用について説明する。  Next, the operation of the above automatic nut caulking machine will be described.

ナット2のねじ軸1への所定の締め付けトルクによる締結後該ナット2をねじ軸1にカシメ止めするには、まず、図1に示すようにねじ軸1のカシメ用溝1a,1aと、自動ナットカシメ機10のカシメ体14,14が概ね符合するように位置合わせした状態でねじ軸1の先端中心に形成されたプラス孔1aに自動ナットカシメ機10のプラス先端部12aを差し込んで係合する。すると、プラス孔1aへのプラス先端部12aへの係合により、ねじ軸1のカシメ用溝1b,1bと、自動ナットカシメ機10のカシメ体14,14とがねじ軸1の半径方向において自動的に一致するように位置決めされる。  In order to secure the nut 2 to the screw shaft 1 after fastening the nut 2 to the screw shaft 1 with a predetermined tightening torque, first, as shown in FIG. In a state where the crimping bodies 14 and 14 of the nut crimping machine 10 are aligned so as to substantially coincide, the plus tip end 12a of the automatic nut crimping machine 10 is inserted into and engaged with the plus hole 1a formed at the center of the tip of the screw shaft 1. Then, the caulking grooves 1b and 1b of the screw shaft 1 and the caulking bodies 14 and 14 of the automatic nut caulking machine 10 are automatically engaged in the radial direction of the screw shaft 1 due to the engagement of the plus end portion 12a with the plus hole 1a. Is positioned so as to match.

次に、その係合状態のもとで、正逆転モータ18を正回転させることにより、回転駆動軸16,16を有する連動機構17,17を介して押込体15,15を軸方向先端側に移動させる。この押込体15,15の先端側への移動により押込体15,15がカシメ体14,14を半径方向内方へ摺動させる。このカシメ体14,14の内方への移動で図5に示すようにナット2のリング部2a,2aを所定の加圧力で変形してねじ軸1の溝1b,1b内に圧入し自動的にカシメ止めする。  Next, when the forward / reverse rotation motor 18 is rotated forward under the engaged state, the pushing bodies 15 and 15 are moved to the front end side in the axial direction via the interlocking mechanisms 17 and 17 having the rotation drive shafts 16 and 16. Move. The pushing bodies 15, 15 slide the caulking bodies 14, 14 inward in the radial direction by the movement of the pushing bodies 15, 15 toward the tip side. As shown in FIG. 5, the caulking bodies 14 and 14 move inwardly to deform the ring portions 2a and 2a of the nut 2 with a predetermined pressure and press-fit into the grooves 1b and 1b of the screw shaft 1 to automatically press. Squeeze in.

その結果、カシメ体14,14によるカシメ具合を一定化でき、緩み止め作用にバラツキ発生をなくして確実な緩み止め効果が得られる。その上、強く叩き過ぎてリング部2aを破損するといった問題もなくすることができる。さらに、ねじ軸1の端部に複数の溝1b,1bを設けて、これらの溝1b,1b内にナット2におけるリング部2aの複数個所をカシメ止めする場合、複数の箇所において同時にカシメ作業を行うことができるので、カシメ作業の手間や時間を少なくすることができる。  As a result, the caulking state by the caulking bodies 14 and 14 can be made constant, and there is no variation in the anti-loosening action, and a reliable anti-loosening effect can be obtained. In addition, it is possible to eliminate the problem that the ring portion 2a is damaged by hitting it too hard. Further, when a plurality of grooves 1b and 1b are provided at the end of the screw shaft 1 and a plurality of portions of the ring portion 2a of the nut 2 are caulked and fixed in these grooves 1b and 1b, the caulking work is simultaneously performed at the plurality of locations. Since it can be performed, it is possible to reduce the labor and time of the caulking work.

上記した実施の形態では、軸状本体11の先端部に、保持体13とカシメ体14と押込体15と回転駆動軸16を有する連動機構17とからなるカシメ手段を180度の角度をおいて左右対称に二箇所設けるようにしたけれども、カシメ手段は二箇所に限らず一箇所であってもよいし、二箇所以上であってもよい。  In the above-described embodiment, the caulking means including the holding body 13, the caulking body 14, the pushing body 15, and the interlocking mechanism 17 having the rotation drive shaft 16 is provided at the tip of the shaft-shaped main body 11 at an angle of 180 degrees. Although two places are provided symmetrically, the caulking means is not limited to two places, and may be one place or two or more places.

1 自動ナットカシメ機
11 軸状本体
12 中心軸部
12a プラス先端部
13 保持部
14 カシメ体
15 押込体
15a テーパー先端部
16 回転駆動軸
17 連動機構
18 正逆転駆動モータ
DESCRIPTION OF SYMBOLS 1 Automatic nut crimping machine 11 Shaft-shaped main body 12 Center axis | shaft part 12a Plus tip part 13 Holding part 14 Caulking body 15 Pushing body 15a Taper tip part 16 Rotation drive shaft 17 Interlocking mechanism 18 Forward / reverse drive motor

Claims (3)

ナットの端面に一体に突設形成されている変形可能なリング部を、ねじ軸の端部に設けられている溝内に自動的にカシメ止めする自動ナットカシメ機であって、軸状本体の先端側中心部に、上記ねじ軸の先端中心に形成されたプラス孔に係合離脱可能なプラス先端部を有する中心軸部を設けると共に、軸状本体の先端側に、上記プラス孔にプラス先端部が係合した状態において中心軸部を中心としてねじ軸の溝と同位相で半径方向に延びる保持部を設ける一方、この保持部内に、半径方向にのみ摺動可能で半径方向内方への摺動によりナットのリング部を変形してねじ軸の溝内にカシメ止めするカシメ体を支持すると共に、保持部内に軸方向に往復移動可能に支持され、かつ軸方向先端側への移動によりカシメ体を半径方向内方へ移動させるテーパー先端部を有する押込体を内装し、かつ、押込体を、回転駆動軸を有する連動機構を介して軸方向に往復移動させる正逆転駆動モータを備えていることを特徴とする自動ナットカシメ機。  An automatic nut caulking machine that automatically crimps a deformable ring formed integrally with an end face of a nut into a groove provided at an end of a screw shaft, and the tip of the shaft body A central shaft portion having a plus tip portion that can be engaged and disengaged from a plus hole formed at the tip center of the screw shaft is provided at the side center portion, and the plus tip portion is placed on the plus hole on the tip side of the shaft-shaped main body. In the engaged state, a holding portion is provided that extends in the radial direction in the same phase as the groove of the screw shaft with the central shaft portion as the center, while the holding portion is slidable only in the radial direction and is slid inward in the radial direction. The nut part of the nut is deformed by movement to support the caulking body that is caulked in the groove of the screw shaft, and is supported in the holding part so as to be capable of reciprocating in the axial direction. Move inward in the radial direction And interior of the pushing member with supermarkets tip and pushing body, automatic Nattokashime machine, characterized in that it comprises a forward and reverse drive motor for reciprocating in the axial direction via the interlocking mechanism having a rotary drive shaft. 回転駆動軸を有する連動機構を、正逆転駆動モータにより回転されかつウォームをもつ回転駆動軸と、ウォームに噛み合うラックを有する押込体とから構成したことを特徴とする請求項1記載の自動ナットカシメ機。  2. The automatic nut caulking machine according to claim 1, wherein the interlocking mechanism having a rotation drive shaft is composed of a rotation drive shaft rotated by a forward / reverse drive motor and having a worm, and a pushing body having a rack meshing with the worm. . 軸状本体の先端部に保持体とカシメ体と押込体と回転駆動軸を有する連動機構とからなるカシメ手段を、所定間隔を置いて複数個設けたことを特徴とする自動ナットカシメ機。  An automatic nut caulking machine characterized in that a plurality of caulking means including a holding body, a caulking body, a pushing body, and an interlocking mechanism having a rotation drive shaft are provided at a distal end portion of a shaft-like main body at a predetermined interval.
JP2011001451U 2011-03-01 2011-03-01 Automatic nut caulking machine Expired - Fee Related JP3169882U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017051020A (en) * 2015-09-03 2017-03-09 トヨタ自動車株式会社 Rotor for rotary electric machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017051020A (en) * 2015-09-03 2017-03-09 トヨタ自動車株式会社 Rotor for rotary electric machine
US10439478B2 (en) 2015-09-03 2019-10-08 Toyota Jidosha Kabushiki Kaisha Rotor for rotary electric machine

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