JPH0550219U - Reciprocating drive - Google Patents
Reciprocating driveInfo
- Publication number
- JPH0550219U JPH0550219U JP10955791U JP10955791U JPH0550219U JP H0550219 U JPH0550219 U JP H0550219U JP 10955791 U JP10955791 U JP 10955791U JP 10955791 U JP10955791 U JP 10955791U JP H0550219 U JPH0550219 U JP H0550219U
- Authority
- JP
- Japan
- Prior art keywords
- feed screw
- ring member
- feed
- screw
- inner ring
- 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.)
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Abstract
(57)【要約】
【目的】送りねじの雄ねじと係合部材の内輪部材に設け
られた突歯との係合状態を確実に維持して可動体を高い
位置精度で移動させる。送りねじのリード角が大きい場
合であっても、内輪部材の突歯と雄ねじとを係合させて
可動体を大きなストロークで移動させる。係合する雄ね
じと突歯との磨耗を少なくして長期にわたって高い位置
精度を維持することができる。
【構成】外周に所定の送りピッチおよびリード角のねじ
を設けて送りねじを形成する。係合部材を外輪部材と、
該外輪部材の内周面に回転可能に支持され、かつ内周面
に前記送りねじの軸線と直交する方向へ向って送りねじ
と噛み合う少なくとも１条以上の突歯を有した内輪部材
とから形成する。前記送りねじのねじに対して前記係合
部材を、前記リード角分、傾斜した状態で係合する。
(57) [Abstract] [Purpose] To reliably maintain the engagement state between the male screw of the feed screw and the protruding tooth provided on the inner ring member of the engaging member to move the movable body with high positional accuracy. Even when the lead angle of the feed screw is large, the projecting teeth of the inner ring member are engaged with the male screw to move the movable body with a large stroke. It is possible to maintain high positional accuracy for a long period of time by reducing wear of the engaging male screw and the teeth. [Structure] A screw having a predetermined feed pitch and lead angle is provided on the outer periphery to form a feed screw. An engaging member and an outer ring member,
The inner ring member is rotatably supported on the inner peripheral surface of the outer ring member, and has an inner ring member having at least one or more projecting teeth on the inner peripheral surface that meshes with the feed screw in a direction orthogonal to the axis of the feed screw. .. The engagement member is engaged with the screw of the feed screw in a state of being inclined by the lead angle.
Description
【０００１】[0001]
この考案は、送りねじの回転にともなって可動体を高い位置精度で、かつ多い 移動量で往復移動する往復駆動装置に関する。 The present invention relates to a reciprocating drive device that reciprocates a movable body with high positional accuracy and a large amount of movement as the feed screw rotates.
【０００２】[0002]
本出願人は、平成３年１１月２９日付け特許願において、外周に所定の送りピ ッチおよびリード角でねじが形成され、電動モータに連結されて所定の回転数で 回転する送りねじと、フレームに固定された外輪部材に対して回転可能に支持さ れ、内周面に前記送りねじの軸線と直交する方向へ向って送りねじに噛み合う少 なくとも１条以上の突歯が形成された内輪部材を有した係合部材と、前記係合部 材に固定される可動体からなる往復駆動装置を提案した。 In the patent application filed on November 29, 1991, the present applicant has proposed that a screw is formed on the outer periphery with a predetermined feed pitch and a lead angle, and that the screw is connected to an electric motor and rotates at a predetermined rotation speed. , Rotatably supported by the outer ring member fixed to the frame, and at least one or more protruding teeth formed on the inner peripheral surface in the direction orthogonal to the axis of the feed screw to engage with the feed screw. A reciprocating drive device including an engaging member having an inner ring member and a movable body fixed to the engaging member has been proposed.
【０００３】[0003]
しかしながら、上記構造の往復駆動装置にあっては、送りねじの雄ねじに対し て突歯が軸線と直交する状態で噛み合っているため、雄ねじのリード角を大きく することができず、送りねじの回転に対して可動体の移動量を大きくできなかっ た。 However, in the reciprocating drive device having the above-described structure, the lead teeth of the male screw cannot be increased because the projecting teeth mesh with the male screw of the lead screw in a state of being orthogonal to the axis. On the other hand, the amount of movement of the movable body could not be increased.
【０００４】 また、送りねじのリード角に対して突歯が軸線が直交する状態で噛み合ってい るため、両者の噛み合わせ面積が小さくなっているため、送りねじの動力を可動 体に対して効率的に伝達できなかった。[0004] Furthermore, since the projecting teeth mesh with the lead angle of the feed screw in a state where the axis lines are orthogonal to each other, the meshing area between the two is small, so that the power of the feed screw is efficiently applied to the movable body. Could not be communicated to.
【０００５】 本考案は、上記した従来の欠点を解決するために考案されたものであり、その 目的とするところは、送りねじのリード角が大きい場合であっても突歯を確実に 噛合せて可動体を大きな移動量にて移動させることができる往復駆動装置を提供 することにある。The present invention was devised to solve the above-mentioned conventional drawbacks, and its purpose is to ensure that the protruding teeth are engaged even when the lead angle of the feed screw is large. An object of the present invention is to provide a reciprocating drive device capable of moving a movable body with a large amount of movement.
【０００６】 また本考案の他の目的は、雄ねじに突歯を直交状態で噛み合わせた場合であっ ても送りねじの動力を可動体に確実に伝達して移動させることができる往復駆動 装置を提供することにある。Another object of the present invention is to provide a reciprocating drive device capable of reliably transmitting the power of a feed screw to a movable body and moving the male screw even when the protruding teeth are meshed with each other in an orthogonal state. To do.
【０００７】[0007]
このため請求項１は、外周に所定の送りピッチおよびリード角でねじが形成さ れ、電動モータに連結されて所定の回転数で回転する送りねじと、内周面に前記 送りねじの軸線と直交する方向へ向って送りねじに噛み合う少なくとも１条以上 の突歯が形成された内輪部材および該内輪部材を回転可能に支持する外輪部材と からなり、可動体に対し、前記突歯と送りねじのねじとが一致して噛み合うよう に送りねじの軸線と直交する方向から前記リード角偏位した位置に固定された係 合部材とからなることを特徴としている。 Therefore, according to claim 1, a screw is formed on the outer circumference at a predetermined feed pitch and a lead angle, and the feed screw is connected to an electric motor and rotates at a predetermined rotation speed. It comprises an inner ring member having at least one or more projecting teeth formed in mesh with the feed screw in a direction orthogonal to each other, and an outer ring member rotatably supporting the inner ring member. And an engaging member that is fixed at a position deviated from the lead angle from a direction orthogonal to the axis of the feed screw so as to mesh with each other.
【０００８】 また請求項４は、外周に所定の送りピッチおよびリード角でねじが形成される とともに相互の軸線が平行となるように配置され、電動モータに連結されて所定 の回転数で同期回転する少なくとも２本の送りねじと、可動体に対して夫々の送 りねじの軸線と同軸状に固定された外輪部材および該外輪部材の内周面に回転可 能に支持され、内周面に前記送りねじの軸線と直交する方向へ向い、夫々の送り ねじに噛み合う少なくとも１条以上の突歯が形成された内輪部材との係合部材と からなることを特徴としている。According to a fourth aspect of the present invention, screws are formed on the outer periphery at a predetermined feed pitch and lead angle and are arranged so that their mutual axes are parallel to each other, and are connected to an electric motor for synchronous rotation at a predetermined rotational speed. At least two feed screws, an outer ring member fixed to the movable body coaxially with the axis of each feed screw, and rotatably supported on the inner peripheral surface of the outer ring member, and on the inner peripheral surface. And an engaging member for engaging with an inner ring member formed with at least one or more protruding teeth that mesh with each of the feed screws and that extends in a direction orthogonal to the axis of the feed screw.
【０００９】 さらに請求項５は、外周に所定の送りピッチおよびリード角でねじが形成され るとともに相互の軸線が平行となるように配置され、電動モータに連結されて所 定の回転数で同期回転する少なくとも３本の送りねじと、外周に突部が軸線周り に形成され、夫々の送りねじの中心を結ぶ仮想円の中心位置にて夫々の送りねじ と噛み合う中心軸部材と、前記中心軸部材が配置された夫々の送りねじの外周側 に位置する可動体に固定された外輪部材および該外輪部材の内周面に回転可能に 支持され、内周面に前記送りねじの軸線と直交する方向へ向い、夫々の送りねじ に噛み合う少なくとも１条以上の突歯が形成された内輪部材との係合部材とから なることを特徴としている。Further, according to a fifth aspect of the present invention, threads are formed on the outer periphery at a predetermined feed pitch and lead angle and are arranged so that their mutual axes are parallel to each other, and are connected to an electric motor to synchronize at a predetermined rotation speed. At least three rotating feed screws, a protrusion on the outer circumference around the axis, and a central shaft member that meshes with each of the feed screws at the center position of a virtual circle connecting the centers of the respective feed screws; An outer ring member fixed to a movable body located on the outer peripheral side of each feed screw in which the member is arranged, and rotatably supported on the inner peripheral surface of the outer ring member, and orthogonal to the axis line of the feed screw on the inner peripheral surface. And an engaging member for engaging with the inner ring member having at least one or more protruding teeth that mesh with the respective feed screws.
【００１０】[0010]
請求項１は、送りねじが所定の回転数で回転されると、係合部材の外輪部材に 対して内輪部材が回転しながら送りねじの軸線と直交する方向に向って直線状に 延びる突歯と前記送りねじとの噛み合いを維持して可動体を移動させることがで きる。 According to a first aspect of the present invention, when the feed screw is rotated at a predetermined number of rotations, the inner ring member rotates linearly with respect to the outer ring member of the engaging member and linearly extends in a direction orthogonal to the axis of the feed screw. The movable body can be moved while maintaining the engagement with the feed screw.
【００１１】 また、送りねじに対して内輪部材の突歯を該送りねじのリード角と一致する傾 斜状態で噛み合わせることができ、可動体の移動量を多くすることができる。Further, the protruding teeth of the inner ring member can be engaged with the feed screw in a tilted state that matches the lead angle of the feed screw, and the amount of movement of the movable body can be increased.
【００１２】 また請求項４は、軸線が一致した平行状態に配置された少なくとも２本の送り ねじが同期回転されると、外輪部材に対して回転可能に支持された内輪部材の内 周面に送りねじの軸線と直交する方向に向って形成された突歯が夫々の送りねじ の雄ねじに噛み合わされる。According to a fourth aspect of the present invention, when at least two feed screws arranged in parallel with their axes aligned with each other are rotated synchronously, the inner peripheral surface of the inner ring member rotatably supported by the outer ring member is rotated. The projecting teeth formed in the direction orthogonal to the axis of the feed screw are meshed with the male screw of each feed screw.
【００１３】 このため、回転する内輪部材により送りねじの摺動抵抗を軽減して送りねじと 突歯との噛み合わせ状態を確実に維持しながら可動体を移動させることができる とともに送りねじの動力を可動体へ確実に伝達して移動させることができる。Therefore, the rotating inner ring member reduces the sliding resistance of the feed screw, so that the movable body can be moved while reliably maintaining the meshing state of the feed screw and the teeth, and the power of the feed screw can be increased. It can be surely transmitted to the movable body and moved.
【００１４】 さらに請求項５は、軸線が一致した平行状態に配置された少なくとも３本の送 りねじが同期回転されると、外輪部材に対して回転可能に支持された内輪部材の 内周面に送りねじの軸線と直交する方向に向って形成された突歯が夫々の送りね じの雄ねじに噛み合わされる。Further, according to a fifth aspect, when at least three feed screws arranged in parallel with the axes aligned with each other are rotated synchronously, the inner peripheral surface of the inner ring member rotatably supported with respect to the outer ring member. The protruding teeth formed in the direction perpendicular to the axis of the feed screw are engaged with the male screw of each feed screw.
【００１５】 このため、回転する内輪部材により送りねじの摺動抵抗を軽減して送りねじと 突歯との噛み合わせ状態を確実に維持しながら可動体を移動させることができる とともに係合部材の移動にともなって該箇所にて送りねじ相互に噛み合う中心軸 部材が係合部材とともに移動して送りねじの撓みを規制して噛み合わせ状態を維 持することができ、送りねじの動力を可動体へ確実に伝達して移動させることが できる。Therefore, the rotating inner ring member reduces the sliding resistance of the feed screw, so that the movable body can be moved while reliably maintaining the meshing state of the feed screw and the teeth, and the movement of the engaging member is also possible. Accordingly, the central shaft member that meshes with the feed screws at the location moves together with the engaging member to regulate the flexure of the feed screw and maintain the meshed state, and the power of the feed screw to the movable body. It can be reliably transmitted and moved.
【００１６】[0016]
以下、本考案の一実施例を図面に従って説明する。 An embodiment of the present invention will be described below with reference to the drawings.
【００１７】 図１は往復駆動装置の斜視図である。FIG. 1 is a perspective view of the reciprocating drive device.
【００１８】 図２は係合部材を示す分解斜視図である。FIG. 2 is an exploded perspective view showing the engaging member.
【００１９】 図３は係合部材の中央横断面図である。FIG. 3 is a central cross-sectional view of the engaging member.
【００２０】 往復駆動装置１の送りねじ３外周には雄ねじ５が所望のリード角θおよびピッ チにて螺旋状に形成され、該送りねじ３は各軸端部に設けられた軸受７・９によ り回転可能に支持されている。A male screw 5 is spirally formed on the outer periphery of the feed screw 3 of the reciprocating drive device 1 at a desired lead angle θ and a pitch, and the feed screw 3 has bearings 7 and 9 provided at respective shaft ends. It is rotatably supported by.
【００２１】 また、前記送りねじ３の一方軸端部には電動モータ１１が連結され、該電動モ ータ１１の駆動にともなって送りねじ３が所定の回転数で回転駆動される。An electric motor 11 is connected to one shaft end of the feed screw 3, and the feed screw 3 is rotationally driven at a predetermined rotation speed as the electric motor 11 is driven.
【００２２】 往復駆動装置１の本体フレーム４には前記送りねじ３と一致する方向に軸線を 有したガイドロッド１３が横架され、該ガイドロッド１３には可動体１５が軸線 方向へ摺動可能に支持されている。A guide rod 13 having an axis in a direction coinciding with the feed screw 3 is horizontally mounted on a main body frame 4 of the reciprocating drive device 1, and a movable body 15 is slidable in the axial direction on the guide rod 13. Supported by.
【００２３】 該可動体１５には係合部材１７が取り付けられ、図３に示すように該係合部材 １７のフレーム１９には外輪部材２１が前記送りねじ３の軸線と直交する方向に 対して前記リード角θ、偏位した傾斜状態で固定されている。An engaging member 17 is attached to the movable body 15, and an outer ring member 21 is attached to a frame 19 of the engaging member 17 in a direction orthogonal to the axis of the feed screw 3 as shown in FIG. The lead angle θ is fixed in a deviated inclined state.
【００２４】 前記外輪部材２１の内周面には内輪部材２５がニードル軸２７を介して回転可 能に支持され、該内輪部材２５の内周面には複数の突歯２５ａが軸線と直交する 方向に向って直線状に延びるように形成されている。An inner ring member 25 is rotatably supported on the inner circumferential surface of the outer ring member 21 via a needle shaft 27, and a plurality of projecting teeth 25 a are formed on the inner circumferential surface of the inner ring member 25 in a direction orthogonal to the axis. Is formed so as to linearly extend toward.
【００２５】 そして図３に示すように、内輪部材２５の突歯２５ａは前記送りねじ３の雄ね じ５に対し、そのリード角と一致するように噛み合わされている。As shown in FIG. 3, the projecting teeth 25 a of the inner ring member 25 are meshed with the male screw 5 of the feed screw 3 so as to match its lead angle.
【００２６】 また、前記突歯２５ａは通常のナットのように螺旋状の雌ねじと異なり、非螺 旋状態に形成されている。The protruding teeth 25a are formed in a non-twisted state unlike a helical female screw like a normal nut.
【００２７】 次に、上記のように構成された往復駆動装置１の作用を説明する。Next, the operation of the reciprocating drive device 1 configured as described above will be described.
【００２８】 電動モータ１１の駆動により送りねじ３が所定の方向へ回転されると、該送り ねじ３の雄ねじ５に噛み合う内輪部材２５の突歯２５ａにより係合部材１７全体 が軸線方向へ移動されることにより可動体１５が移動される。When the feed screw 3 is rotated in a predetermined direction by driving the electric motor 11, the entire engaging member 17 is moved in the axial direction by the protruding teeth 25 a of the inner ring member 25 that meshes with the male screw 5 of the feed screw 3. As a result, the movable body 15 is moved.
【００２９】 このとき、送りねじ３の雄ねじ５に対して内輪部材２５の突歯２５ａが雄ねじ ５のリード角と一致するように噛み合わされているため、送りねじ５のリード角 に応じた移動量で可動体１５を移動させることができる。At this time, since the projecting teeth 25a of the inner ring member 25 are meshed with the male screw 5 of the feed screw 3 so as to match the lead angle of the male screw 5, the amount of movement corresponding to the lead angle of the feed screw 5 is increased. The movable body 15 can be moved.
【００３０】 また、外輪部材２１に対して内輪部材２５が回転可能に支持されているため、 雄ねじ５に対する突歯２５ａの摺接抵抗により内輪部材２５が回転し、両者の噛 み合わせ状態を維持して送りねじ３の回転量に対して可動体１５の移動量を一定 にすることができる。Further, since the inner ring member 25 is rotatably supported with respect to the outer ring member 21, the inner ring member 25 rotates due to the sliding contact resistance of the projecting teeth 25a with respect to the male screw 5, and the meshed state between them is maintained. The amount of movement of the movable body 15 can be made constant with respect to the amount of rotation of the feed screw 3.
【００３１】 すなわち、内輪部材２５が回転不可能に取り付けられている場合には、両者間 の摺接抵抗により両者の噛み合わせ位置が雄ねじ５および突歯２５ａの山部と谷 部との間で偏位し、送りねじ５の回転量に対して可動体１５の移動量が微妙に変 化している。このため、送りねじ３の回転量に基づいて可動体１５の移動量を高 い精度で制御できなかったが、この実施例は両者の噛み合わせ状態を一定にする ことができるため、送りねじ３の回転量に応じて可動体１５を高い精度で移動さ せることができる。That is, when the inner ring member 25 is non-rotatably attached, the meshing position of the two is deviated between the male screw 5 and the crests and troughs of the projecting teeth 25a due to the sliding contact resistance between the two. The moving amount of the movable body 15 slightly changes with respect to the rotating amount of the feed screw 5. For this reason, the amount of movement of the movable body 15 could not be controlled with high accuracy based on the amount of rotation of the feed screw 3. However, in this embodiment, the meshing state of the two can be made constant, so the feed screw 3 It is possible to move the movable body 15 with high accuracy according to the rotation amount of.
【００３２】 これにより送りねじ３の回転に対して可動体１５を、送りねじ３の１回転当た り、雄ねじ５の１ピッチ分の高い位置精度で移動させることができる。As a result, the movable body 15 can be moved with a high positional accuracy of one pitch of the male screw 5 per rotation of the feed screw 3 with respect to the rotation of the feed screw 3.
【００３３】 また、送りねじ３の雄ねじ５に対して内輪部材２５の突歯２５ａがリード角に 応じて傾斜した状態で噛み合っているため、リード角を大きくした場合であって も両者を確実に噛み合わせて可動体１５の送り量を多くすることができる。Further, since the projecting teeth 25a of the inner ring member 25 mesh with the male screw 5 of the feed screw 3 in a state of being inclined in accordance with the lead angle, both are surely meshed even when the lead angle is increased. In addition, the feed amount of the movable body 15 can be increased.
【００３４】 このように本実施例は、送りねじ３の雄ねじ５に対して該送りねじ３の軸線と 直交する方向へ直線状に形成された突歯２５ａを有した内輪部材２５が外輪部材 ２１に対して回転可能に支持されているため、少ない送りねじ３の回転トルクに て可動体１５を確実に往復移動させることができるとともに摺動抵抗による雄ね じ５と突歯２５ａとの噛み合わせの位置ずれを少なくして可動体１５を高い位置 精度で移動させることができる。As described above, in this embodiment, the outer ring member 21 is provided with the inner ring member 25 having the projecting teeth 25a formed linearly with respect to the male screw 5 of the feed screw 3 in the direction orthogonal to the axis of the feed screw 3. Since it is rotatably supported, the movable body 15 can be reliably reciprocated with a small rotational torque of the feed screw 3 and the position of meshing between the male 5 and the protruding tooth 25a due to sliding resistance. The displacement can be reduced and the movable body 15 can be moved with high positional accuracy.
【００３５】 上記説明は、送りねじ３に対して１個の係合部材１７を取り付けて往復駆動装 置１を構成したが、係合部材の両側に、該係合部材と同種構造の係合部材を配置 し、送りねじの雄ねじに対して両側の各内輪部材の内周面に形成された突歯を中 央に位置する内輪部材の突歯と互い違い状、望ましくは３分割位置にて噛み合わ せる構成であってもよい。In the above description, the reciprocating drive device 1 is configured by attaching one engaging member 17 to the feed screw 3, but the engaging member having the same structure as the engaging member is provided on both sides of the engaging member. A member is arranged so that the teeth formed on the inner peripheral surface of each inner ring member on both sides with respect to the male screw of the feed screw can be meshed with the teeth of the inner ring member located at the center in a staggered manner, preferably at three-divided positions. May be
【００３６】 この実施例にあっては、送りねじの雄ねじに対して内輪部材が互い違い状に噛 み合うため、突歯の摺動抵抗による送りねじが撓むのを防止して送りねじからの 動力伝達を確実に行うことを可能にするとともに可動体１５をさらに高い位置精 度で移動させることができる。In this embodiment, since the inner ring member meshes with the male screw of the feed screw in an alternating manner, the feed screw is prevented from bending due to the sliding resistance of the teeth, and the power from the feed screw is prevented. The transmission can be performed reliably, and the movable body 15 can be moved at a higher position accuracy.
【００３７】 また上記説明は、内輪部材２５の内周面に、送りねじ３における雄ねじ５のリ ード角と一致する傾斜状態で噛み合う突歯２５ａを形成するものとしたが、請求 項３を図示する図４に示すように内周面に突部５１ａが形成された複数のリング 状板５１相互を送りねじの軸線に対して前記リード角づつずらしながら重ね合わ せてリベット５５により固着することにより内輪部材５３を形成したものであっ てもよい。In the above description, the inner peripheral surface of the inner ring member 25 is formed with the projecting teeth 25a that mesh with each other in an inclined state corresponding to the lead angle of the male screw 5 of the feed screw 3, but FIG. As shown in FIG. 4, a plurality of ring-shaped plates 51 each having a projection 51a formed on the inner peripheral surface thereof are overlapped with each other while shifting the lead angle with respect to the axis of the feed screw, and are fixed by rivets 55. The member 53 may be formed.
【００３８】 次に、請求項４を説明する。Next, claim 4 will be described.
【００３９】 図５は往復駆動装置の係合部材を示す断面図である。FIG. 5 is a sectional view showing an engaging member of the reciprocating drive device.
【００４０】 往復駆動装置の本体フレーム４には２本の送りねじ６３・６５が、相互の軸線 が平行で、かつ所定の間隔をおいて回転可能に支持され、夫々送りねじ６３・６ ５の一方軸端部にはプーリ（図示せず）が固定されている。Two feed screws 63, 65 are rotatably supported on the main body frame 4 of the reciprocating drive device so that their mutual axes are parallel to each other and are spaced at predetermined intervals. On the other hand, a pulley (not shown) is fixed to the end of the shaft.
【００４１】 そしてこれらプーリにはタイミングベルトが張設されている。また、一方の送 りねじ６７の軸端部には電動モータ（何れも図示せず）が連結され、該電動モー タの駆動にともなって前記送りねじ６３・６５が同期回転される。A timing belt is stretched around these pulleys. An electric motor (neither is shown) is connected to the shaft end of one of the feed screws 67, and the feed screws 63 and 65 are synchronously rotated with the driving of the electric motor.
【００４２】 前記送りねじ６３・６５には係合部材７５が噛み合わされている。An engaging member 75 is engaged with the feed screws 63 and 65.
【００４３】 すなわち、係合部材７５のブロック７７には外輪部材７９が前記送りねじ６３ ・６５の軸線と一致するように固定され、該外輪部材７９の内周面には内輪部材 ８１がニードル軸８３を介して回転可能に支持されている。該内輪部材８１の内 周面には複数の突歯８１ａが前記送りねじ６３・６５の軸線と直交する方向に向 って形成されている。そして前記内輪部材８１は図示する上方の突歯８１ａが上 方に位置する送りねじ６３の雄ねじに、また下方に位置する突歯８１ａが下方に 位置する送りねじ６５に同時に噛み合うように設定されている。That is, the outer ring member 79 is fixed to the block 77 of the engaging member 75 so as to match the axes of the feed screws 63 and 65, and the inner ring member 81 is provided on the inner peripheral surface of the outer ring member 79 with the needle shaft. It is rotatably supported via 83. A plurality of projecting teeth 81a are formed on the inner peripheral surface of the inner ring member 81 in a direction orthogonal to the axes of the feed screws 63 and 65. The inner ring member 81 is set so that the upper protruding tooth 81a shown in the drawing simultaneously meshes with the male screw of the feed screw 63 located above and the lower protruding tooth 81a meshes with the feed screw 65 located below.
【００４４】 そして前記電動モータの駆動により送りねじ６３・６５が同期回転されると、 送りねじ６３・６５に噛み合う突歯８１ａにより夫々の送りねじ６３・６５から の動力が係合部材７５に伝達される。When the feed screws 63 and 65 are synchronously rotated by the drive of the electric motor, the power from the feed screws 63 and 65 is transmitted to the engaging member 75 by the protruding teeth 81a that mesh with the feed screws 63 and 65. It
【００４５】 このとき、送りねじ６３・６５と突歯８１ａとの噛み合いに伴う摺接抵抗によ り外輪部材７９に対し、内輪部材８１が回転するため、常に一定位置にて両者の 噛み合わせ状態を維持することができ、送りねじ６３・６５の回転量に対して係 合部材７５を所定量にて移動させることができる。At this time, the inner ring member 81 rotates with respect to the outer ring member 79 due to the sliding contact resistance caused by the meshing between the feed screws 63 and 65 and the projecting teeth 81a, so that the meshing state of the two is always maintained at a fixed position. This can be maintained, and the engaging member 75 can be moved by a predetermined amount with respect to the rotation amount of the feed screws 63 and 65.
【００４６】 また、内輪部材８１の突歯８１ａに対し、上方の送りねじ６３および下方の送 りねじ６５が同時に噛み合っているため、送りねじ６３・６５からの動力を係合 部材７５へ効率的に伝達することができ、可動体１５を高トルクにて移動させる ことができる。Further, since the upper feed screw 63 and the lower feed screw 65 are simultaneously engaged with the protruding teeth 81 a of the inner ring member 81, the power from the feed screws 63 and 65 is efficiently applied to the engaging member 75. Therefore, the movable body 15 can be moved with high torque.
【００４７】 次に、請求項５を説明する。Next, claim 5 is explained.
【００４８】 図６は往復駆動装置の係合部材を示す断面図である。FIG. 6 is a sectional view showing an engaging member of the reciprocating drive device.
【００４９】 往復駆動装置の本体フレーム４には３本の送りねじ９３・９５・９７が、相互 の軸線が平行で、かつ相互に所定の間隔をおいた同心円位置に回転可能に支持さ れ、夫々送りねじ９３・９５・９７の一方軸端部にはプーリ（図示せず）が固定 されている。Three feed screws 93, 95, and 97 are rotatably supported on the main body frame 4 of the reciprocating drive device in concentric positions with their axes parallel to each other and at predetermined intervals. Pulleys (not shown) are fixed to the shaft ends of the feed screws 93, 95, and 97, respectively.
【００５０】 そしてこれらプーリにはタイミングベルト（図示せず）が張設されている。ま た、一方の送りねじ９３の軸端部には電動モータ（図示せず）が連結され、該電 動モータの駆動にともなって前記３本の送りねじ９３・９５・９７が同期回転さ れる。A timing belt (not shown) is stretched around these pulleys. An electric motor (not shown) is connected to the shaft end of one of the feed screws 93, and the three feed screws 93, 95, and 97 are rotated in synchronization with the driving of the electric motor. ..
【００５１】 そして前記送りねじ９３・９５・９７の中心部には後述する係合部材１０１の 内輪部材１０５の軸線長さと一致する長さの中心軸部材９９が配置され、該中心 軸部材９９の外周には複数の突条９９ａが軸線と直交する方向へ形成され、該突 条９９ａは夫々の送りねじ９３・９５・９７と噛み合わされている。A central shaft member 99 having a length corresponding to the axial line length of the inner ring member 105 of the engaging member 101, which will be described later, is arranged at the center of the feed screws 93, 95, 97. A plurality of protrusions 99a are formed on the outer periphery in a direction orthogonal to the axis, and the protrusions 99a are meshed with the respective feed screws 93, 95, 97.
【００５２】 また、夫々の送りねじ９３・９５・９７には係合部材１０１が前記中心軸部材 ９９と一致する箇所に係合されている。Further, an engaging member 101 is engaged with each of the feed screws 93, 95 and 97 at a position corresponding to the central shaft member 99.
【００５３】 すなわち、該係合部材１０１のブロック１０１ａには外輪部材１０３が前記送 りねじ９３・９５・９７の軸線と一致するように固定され、該外輪部材１０３の 内周面には内輪部材１０５がニードル軸１０７を介して回転可能に支持されてい る。該内輪部材１０５の内周面には複数の突歯１０５ａが前記送りねじ９３・９ ５・９７の軸線と直交する方向に向って形成され、該突歯１０５ａは夫々の送り ねじ９３・９５・９７と同時に噛み合わされている。That is, the outer ring member 103 is fixed to the block 101 a of the engaging member 101 so as to coincide with the axes of the feed screws 93, 95, and 97, and the inner ring member 103 is attached to the inner peripheral surface of the outer ring member 103. 105 is rotatably supported via a needle shaft 107. A plurality of projecting teeth 105a are formed on the inner peripheral surface of the inner ring member 105 in a direction orthogonal to the axis of the feed screws 93.95.97, and the projecting teeth 105a are provided with respective feed screws 93.95.97. It is meshed at the same time.
【００５４】 そして前記電動モータの駆動により送りねじ９３・９５・９７が同期回転され ると、送りねじ９３・９５・９７に夫々噛み合う突歯８１ａにより夫々の送りね じ９３・９５・９７からの動力が係合部材１０１に伝達されて可動体１５を移動 させる。When the feed screws 93, 95, 97 are synchronously rotated by the drive of the electric motor, the power from the respective feed screws 93, 95, 97 is generated by the protruding teeth 81a meshing with the feed screws 93, 95, 97, respectively. Is transmitted to the engaging member 101 to move the movable body 15.
【００５５】 このとき、夫々の送りねじ９３・９５・９７に対して中心軸部材９９が各送り ねじ９３・９５・９７の中心を結ぶ仮想円の中心位置にてその突条９９ａが噛み 合っているため、該中心軸部材９９は夫々の送りねじ９３・９５・９７に対して 係合部材１０１と一体に移動することになる。At this time, the ridge 99a meshes with the respective feed screws 93, 95, 97 at the center position of the virtual circle connecting the centers of the respective feed screws 93, 95, 97 with each other. Therefore, the central shaft member 99 moves integrally with the engaging member 101 with respect to the respective feed screws 93, 95 and 97.
【００５６】 このため、内輪部材１０５の突歯１０５ａが噛み合う３本の送りねじ９３・９ ５・９７の中心に中心軸部材９９が位置しているため、突歯１０５ａとの噛み合 いに伴う摺接抵抗により夫々の送りねじ９３・９５・９７が中心側へ撓むことを 規制して夫々の送りねじ９３・９５・９７と突歯１０５ａとを一定の位置関係に て噛み合わせることができ、送りねじ９３・９５・９７の回転に対して可動体１ ５を一定の送り量にて移動させることができる。For this reason, since the central shaft member 99 is located at the center of the three feed screws 93.595 and 97 with which the projecting teeth 105a of the inner ring member 105 mesh, the sliding contact accompanying the meshing with the projecting teeth 105a. It is possible to prevent the feed screws 93, 95, 97 from bending toward the center side by resistance, and to mesh the feed screws 93, 95, 97 with the protruding teeth 105a in a fixed positional relationship. The movable body 15 can be moved at a constant feed amount with respect to the rotation of 93, 95, and 97.
【００５７】 他の作用については請求項１・４と同様であり、その説明を省略する。The other operations are the same as in claims 1 and 4, and the description thereof will be omitted.
【００５８】[0058]
このため本考案は、送りねじのリード角が大きい場合であっても突歯を確実に 噛合せて可動体を大きな移動量にて移動させることができる往復駆動装置を提供 することができる。 Therefore, the present invention can provide a reciprocating drive device capable of reliably engaging the protruding teeth and moving the movable body with a large movement amount even when the lead angle of the feed screw is large.
【００５９】 また本考案は、雄ねじに突歯を直交状態で噛み合わせた場合であっても送りね じの撓みを防止して動力を可動体に確実に伝達して移動させることができる往復 駆動装置提供することが可能である。Further, according to the present invention, the reciprocating drive device is capable of preventing the bending of the feed screw and reliably transmitting the power to the movable body to move even when the male teeth are meshed with the projecting teeth in an orthogonal state. It is possible to provide.
【図１】往復駆動装置の斜視図である。FIG. 1 is a perspective view of a reciprocating drive device.
【図２】係合部材を示す分解斜視図である。FIG. 2 is an exploded perspective view showing an engaging member.
【図３】係合部材の中央縦断面図である。FIG. 3 is a central vertical sectional view of an engaging member.
【図４】請求項１の変更実施例を示す略体断面図であ
る。FIG. 4 is a schematic sectional view showing a modified embodiment of claim 1.
【図５】請求項４の略体断面図である。FIG. 5 is a schematic cross-sectional view of claim 4.
【図６】請求項５の略体断面図である。 １：往復駆動装置 ３：送りねじ １１：電動モータ １５：可動体 １７：係合部材 ２１：外輪部材 ２５：内輪部材 ２５ａ：突歯FIG. 6 is a schematic cross-sectional view of claim 5. 1: Reciprocating drive device 3: Feed screw 11: Electric motor 15: Movable body 17: Engaging member 21: Outer ring member 25: Inner ring member 25a: Teeth
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成３年１２月１１日[Submission date] December 11, 1991
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図２[Name of item to be corrected] Figure 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図２】 [Fig. 2]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図３[Name of item to be corrected] Figure 3
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図３】 [Figure 3]
【手続補正３】[Procedure 3]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図４[Name of item to be corrected] Fig. 4
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図４】 ─────────────────────────────────────────────────────
[Figure 4] ─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成３年１２月１３日[Submission date] December 13, 1991
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図２[Name of item to be corrected] Figure 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図２】 [Fig. 2]
Claims (5)
ねじが形成され、電動モータに連結されて所定の回転数
で回転する送りねじと、内周面に前記送りねじの軸線と
直交する方向へ向って送りねじに噛み合う少なくとも１
条以上の突歯が形成された内輪部材および該内輪部材を
回転可能に支持する外輪部材とからなり、可動体に対
し、前記突歯と送りねじのねじとが一致して噛み合うよ
うに送りねじの軸線と直交する方向から前記リード角偏
位した位置に固定された係合部材とからなる往復駆動装
置。1. A feed screw having a screw formed at a predetermined feed pitch and a lead angle on an outer periphery thereof, the feed screw being connected to an electric motor and rotating at a predetermined rotation speed, and a direction on an inner peripheral surface orthogonal to an axis of the feed screw. At least one that engages the lead screw towards
An axial line of the feed screw, which is composed of an inner ring member formed with projecting teeth equal to or larger than the number of threads and an outer ring member that rotatably supports the inner ring member, so that the projecting teeth and the screw of the feed screw mesh with each other with respect to the movable body. A reciprocating drive device comprising an engagement member fixed at a position deviated from the lead angle in a direction orthogonal to the direction.
輪部材の突歯を軸線方向へ互い違い状に噛み合わせた請
求項１の往復駆動装置。2. The reciprocating drive device according to claim 1, wherein the teeth of the inner ring member of the engaging member are meshed with the outer circumference of the feed screw in a staggered manner in the axial direction.
に噛み合う突部が形成された複数のリング部材を同軸状
に重ね合わせて形成した請求項１の往復駆動装置。3. The reciprocating drive device according to claim 1, wherein the inner ring member is formed by coaxially superimposing a plurality of ring members each having a protrusion that meshes with the screw of the feed screw.
ねじが形成されるとともに相互の軸線が平行となるよう
に配置され、電動モータに連結されて所定の回転数で同
期回転する少なくとも２本の送りねじと、可動体に対し
て夫々の送りねじの軸線と同軸状に固定された外輪部材
および該外輪部材の内周面に回転可能に支持され、内周
面に前記送りねじの軸線と直交する方向へ向い、夫々の
送りねじに噛み合う少なくとも１条以上の突歯が形成さ
れた内輪部材とからなる係合部材と、前記軸受部材に固
定される可動体とからなる往復駆動装置。4. At least two screws which are formed on the outer periphery at a predetermined feed pitch and lead angle and are arranged so that their axes are parallel to each other, and which are connected to an electric motor and synchronously rotate at a predetermined rotation speed. Of the feed screw, the outer ring member fixed to the movable body coaxially with the axis line of each feed screw, and rotatably supported on the inner peripheral surface of the outer ring member, and the inner peripheral surface of the feed screw axis line. A reciprocating drive device comprising an engaging member, which is directed in a direction orthogonal to each other, and which includes an inner ring member having at least one or more protruding teeth that mesh with respective feed screws, and a movable body fixed to the bearing member.
ねじが形成されるとともに相互の軸線が平行となるよう
に配置され、電動モータに連結されて所定の回転数で同
期回転する少なくとも３本の送りねじと、外周に突部が
軸線周りに形成され、夫々の送りねじの中心を結ぶ仮想
円の中心位置にて夫々の送りねじと噛み合う中心軸部材
と、前記中心軸部材が配置された夫々の送りねじの外周
側に位置する可動体に固定された外輪部材および該外輪
部材の内周面に回転可能に支持され、内周面に前記送り
ねじの軸線と直交する方向へ向い、夫々の送りねじに噛
み合う少なくとも１条以上の突歯が形成された内輪部材
とからなる係合部材とからなる往復駆動装置。5. At least three screws are formed on the outer periphery at a predetermined feed pitch and lead angle, are arranged so that their mutual axes are parallel to each other, and are connected to an electric motor to synchronously rotate at a predetermined rotation speed. And a central shaft member that is formed on the outer periphery with a protrusion around the axis line and that meshes with each of the feed screws at the center position of a virtual circle connecting the centers of the respective feed screws, and the central shaft member is arranged. An outer ring member fixed to a movable body located on the outer peripheral side of each feed screw and an inner peripheral surface of the outer ring member are rotatably supported, and the inner peripheral surface faces in a direction orthogonal to the axis of the feed screw. Reciprocating drive device including an engaging member formed of an inner ring member having at least one or more protruding teeth that mesh with the feed screw of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10955791U JPH0550219U (en) | 1991-12-10 | 1991-12-10 | Reciprocating drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10955791U JPH0550219U (en) | 1991-12-10 | 1991-12-10 | Reciprocating drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0550219U true JPH0550219U (en) | 1993-07-02 |
Family
ID=14513260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10955791U Pending JPH0550219U (en) | 1991-12-10 | 1991-12-10 | Reciprocating drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0550219U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011172004A (en) * | 2010-02-18 | 2011-09-01 | Sumitomo Electric Ind Ltd | Distribution phase shifter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS612964A (en) * | 1984-06-13 | 1986-01-08 | イリノイ ツール ワークス インコーポレイテツド | Antifriction nut screw drive |
| JPS62251560A (en) * | 1986-04-21 | 1987-11-02 | Mitaka Koki Kk | Precision feed screw device |
| JPH01301034A (en) * | 1988-05-30 | 1989-12-05 | Komatsu Ltd | Feeding device for moving body |
| JPH0262453A (en) * | 1988-08-25 | 1990-03-02 | Asahi Seiko Kk | Linear drive device for converting rotary motion into linear motion |
-
1991
- 1991-12-10 JP JP10955791U patent/JPH0550219U/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS612964A (en) * | 1984-06-13 | 1986-01-08 | イリノイ ツール ワークス インコーポレイテツド | Antifriction nut screw drive |
| JPS62251560A (en) * | 1986-04-21 | 1987-11-02 | Mitaka Koki Kk | Precision feed screw device |
| JPH01301034A (en) * | 1988-05-30 | 1989-12-05 | Komatsu Ltd | Feeding device for moving body |
| JPH0262453A (en) * | 1988-08-25 | 1990-03-02 | Asahi Seiko Kk | Linear drive device for converting rotary motion into linear motion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011172004A (en) * | 2010-02-18 | 2011-09-01 | Sumitomo Electric Ind Ltd | Distribution phase shifter |
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