JP3168571U - External circulation ball screw - Google Patents
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- JP3168571U JP3168571U JP2011001929U JP2011001929U JP3168571U JP 3168571 U JP3168571 U JP 3168571U JP 2011001929 U JP2011001929 U JP 2011001929U JP 2011001929 U JP2011001929 U JP 2011001929U JP 3168571 U JP3168571 U JP 3168571U
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Abstract
【課題】回流通路の取り付けが容易となる外部循環式ボールねじを提供する。【解決手段】ねじ軸と、該ねじ軸を套設するナット６と、該ナット６に取り付けられる循環部材８とを含み、該循環部材８は、Ｌ字型を呈し、上循環体８２と下循環体８３を有し、上循環体８２と下循環体８３は、ナット６の取り付け孔６２の軸方向Ｇに沿って取り付けられるか、又は取り外されることを特徴とする。よって、回流通路に転がり体を簡単に設置し、組み立ての効率を向上し、取り付け用の補助治具を必要とせず、製造コストを低減することができる。【選択図】図５PROBLEM TO BE SOLVED: To provide an external circulation type ball screw in which a circulation passage can be easily attached. A screw shaft, a nut 6 for mounting the screw shaft, and a circulation member 8 attached to the nut 6 are included, and the circulation member 8 has an L shape and includes an upper circulation body 82 and a lower circulation body 82. It has a circulation body 83, and the upper circulation body 82 and the lower circulation body 83 are characterized in that they are attached or detached along the axial direction G of the attachment hole 62 of the nut 6. Therefore, the rolling body can be easily installed in the circulation passage, the efficiency of assembly can be improved, an auxiliary jig for mounting is not required, and the manufacturing cost can be reduced. [Selection diagram] Fig. 5
Description
本考案はボールねじに係り、特に、外部循環式ボールねじに関する。 The present invention relates to a ball screw, and more particularly to an external circulation ball screw.
図１と図２を参照されたい。公知の外部循環式ボールねじは、ねじ軸１と、ナット２と、四つの循環部材４と、固定蓋３とを含む。ねじ軸１の外周面には、螺旋状の転がり溝１１が設けられる。ナット２には、ねじ軸１を穿設するための穿孔２１が設けられ、穿孔２１の内周面には、転がり溝１１に対応する転がり溝２１１が設けられ、転がり溝１１と転がり溝２１１が一つの負荷経路（図示せず）を構成する。前記負荷経路には、複数の転がり体（図示せず）が設けられ、前記転がり体はねじ軸１とナット２との間の伝動媒体として働く。しかもナット２の外周面には、ナット２の壁面に貫通して前記穿孔２１と連通する複数の取り付け孔２２が、設けられる。循環部材４は、概略Ｌ字型を呈し、一つの回流通路４３を有する。前記循環部材４は、前記取り付け孔２２に挿設される。前記回流通路４３の一端を前記負荷経路と接続させるとともに、しかも前記回流通路４３の他端を他の循環部材４の回流通路４３と接続させることにより、二つの前記循環部材４の回流通路４３で一つの循環経路（図示せず）を構成する。前記循環経路は、転がり体の転がり（又は回流）に供し、これにより、ナット２をねじ軸１上において往復移動させることができる。さらに、前記ナット２の外部には、固定蓋３が設けられ、前記固定蓋３は、一つの固定溝（図示せず）を有し、前記固定溝は、循環部材４をナット２上に位置決める。 Please refer to FIG. 1 and FIG. The known external circulation ball screw includes a screw shaft 1, a nut 2, four circulation members 4, and a fixed lid 3. A spiral rolling groove 11 is provided on the outer peripheral surface of the screw shaft 1. The nut 2 is provided with a perforation 21 for drilling the screw shaft 1, and the inner peripheral surface of the perforation 21 is provided with a rolling groove 211 corresponding to the rolling groove 11, and the rolling groove 11 and the rolling groove 211 are formed. One load path (not shown) is configured. The load path is provided with a plurality of rolling bodies (not shown), and the rolling bodies serve as a transmission medium between the screw shaft 1 and the nut 2. In addition, a plurality of mounting holes 22 that penetrate through the wall surface of the nut 2 and communicate with the perforations 21 are provided on the outer peripheral surface of the nut 2. The circulation member 4 is substantially L-shaped and has one circulation passage 43. The circulation member 4 is inserted into the attachment hole 22. One end of the circulation path 43 is connected to the load path, and the other end of the circulation path 43 is connected to the circulation path 43 of another circulation member 4, so that the circulation of the two circulation members 4 can be improved. The circulation path 43 constitutes one circulation path (not shown). The circulation path is used for rolling (or circulating) of the rolling element, whereby the nut 2 can be reciprocated on the screw shaft 1. Further, a fixing lid 3 is provided outside the nut 2, and the fixing lid 3 has one fixing groove (not shown), and the fixing groove positions the circulation member 4 on the nut 2. Decide.
ところで、循環部材４は図２に示すように、第１部材４１と第２部材４２とからなり、両者が凹凸の係合又は接着方式で組み合わせることにより、前記循環部材４を構成する。その問題点は、前記第１部材４１と前記第２部材４２は、図２に示すように、前記取り付け孔２２の径方向Ｇを組み合わせ方向又は分離方向とされているので、ユーザーが転がり体を回流通路４３に取り付けるときに、まず転がり体を循環部材４の回流通路４３に収納してから、循環部材４を取り付け孔２２に挿設しなければならないことにある。しかし、前記回流通路４３が貫通した経路であるため、転がり体を回流通路４３に収納する前に、回流通路４３の一端の出口を塞ぐ必要がある。これにより、転がり体が回流通路４３から外部へ落下することを防止することができる。逆に、循環部材４を取り付け孔２２に取り付けるときに、塞いだ出口を開ける必要がある。この際に、転がり体が回流通路４３から落下し易くなる。また、他の方法としては、転がり体に潤滑油を塗ってから、潤滑油の粘着性を利用して一つずつの転がり体を回流通路４３に取り付けることが挙げられる。しかし、この方法では、転がり体を一つずつ取り付け必要があるため、作業速度が遅くなり易く、特に寸法が比較的小さい転がり体の場合、取り付けの作業に手間がかかり、一回の作業で済むことができない。また、取り付け用の補助治具を使う場合は、補助治具を回流通路４３から取り出す際に、補助治具に付着されている潤滑油によって、転がり体も回流通路の外部へ一緒に取り出されるという難点があった。 By the way, as shown in FIG. 2, the circulation member 4 is composed of a first member 41 and a second member 42, and the circulation member 4 is configured by combining both in an uneven engagement or adhesion method. The problem is that the first member 41 and the second member 42, as shown in FIG. When attaching to the circulation passage 43, the rolling body must first be stored in the circulation passage 43 of the circulation member 4 and then the circulation member 4 must be inserted into the attachment hole 22. However, since the circulation passage 43 is a through-passage, the outlet of one end of the circulation passage 43 needs to be closed before the rolling body is stored in the circulation passage 43. Thereby, it can prevent that a rolling body falls outside from the circulation path 43. FIG. Conversely, when the circulation member 4 is attached to the attachment hole 22, it is necessary to open the closed outlet. At this time, the rolling body easily falls from the circulation passage 43. Another method is to apply lubricating oil to the rolling bodies and then attach the rolling bodies one by one to the circulation passage 43 using the adhesiveness of the lubricating oil. However, in this method, since it is necessary to attach the rolling bodies one by one, the working speed is likely to be slow, and particularly in the case of a rolling body having a relatively small size, it takes time and effort to install. I can't. Also, when using an auxiliary jig for mounting, when the auxiliary jig is taken out from the circulation path 43, the rolling element is also taken out of the circulation path together with the lubricating oil attached to the auxiliary jig. There was a difficulty of being.
そこで、本考案の主な目的は、回流通路の取り付け又は組み立てが容易になり、低コストで製造できる外部循環式ボールねじを提供することにある。 Accordingly, a main object of the present invention is to provide an external circulation ball screw that can be easily manufactured and can be manufactured at a low cost.
前記目的を達成するために、本考案の請求項１は、複数の転がり体と、ねじ軸と、ナットと、少なくとも二つの循環部材と、を含む外部循環式ボールねじであって、前記ねじ軸は、断面形状が円形である棒状を呈し、外周面に螺旋状の転がり溝が設けられており、前記ナットには、前記ねじ軸を套設するための穿孔が設けられており、前記穿孔の内周面に前記転がり溝に対応する別の転がり溝が設けられており、前記転がり溝と前記別の転がり溝は一つの負荷経路を形成し、且つ前記ナットの外周面上に前記穿孔と連通する複数の取り付け孔が傾斜して設置されており、前記取り付け孔は、前記別の転がり溝に接続されており、前記二つの循環部材は、Ｌ字型を呈し、それぞれの一端が互いに接続されており、それぞれの他端が前記取り付け孔に挿設されており、且つ前記循環部材は、上循環体と下循環体を含み、前記上循環体と前記下循環体には、一つの半回流通路がそれぞれ設けられており、前記上循環体と前記下循環体を組み合わせて前記循環部材を形成するとともに、二つの前記半回流通路で一つの回流通路を構成し、且つ二つの前記循環部材の二つの前記回流通路を接続することにより、一つ回流経路を構成し、前記回流経路の両端を前記負荷経路と接続して一つの完全な循環経路を構成し、前記循環経路中に前記転がり体を配置し、且つ前記上循環体と下循環体は前記取り付け孔の軸方向を組み合わせ方向又は分離方向とすることを特徴とする、外部循環式ボールねじを提供する。 In order to achieve the above object, claim 1 of the present invention is an external circulation type ball screw including a plurality of rolling elements, a screw shaft, a nut, and at least two circulation members, and the screw shaft. Is a rod having a circular cross-sectional shape, and is provided with a spiral rolling groove on the outer peripheral surface, and the nut is provided with a perforation for installing the screw shaft. Another rolling groove corresponding to the rolling groove is provided on the inner circumferential surface, and the rolling groove and the other rolling groove form a load path, and communicate with the perforations on the outer circumferential surface of the nut. A plurality of mounting holes are installed at an inclination, the mounting holes are connected to the other rolling groove, and the two circulation members are L-shaped, and one ends of the two circulating members are connected to each other. And the other end of each And the circulation member includes an upper circulation body and a lower circulation body, and each of the upper circulation body and the lower circulation body is provided with one semi-circulation passage, The circulation member and the lower circulation body are combined to form the circulation member, and the two half-circulation passages constitute one circulation passage, and the two circulation passages of the two circulation members are connected to each other. Thus, one circulation path is formed, both ends of the circulation path are connected to the load path to form one complete circulation path, the rolling element is disposed in the circulation path, and the upper The circulation body and the bottom circulation body provide an external circulation type ball screw characterized in that the axial direction of the mounting hole is a combination direction or a separation direction.
本考案の請求項２は、複数の転がり体と、ねじ軸と、ナットと、少なくとも二つの循環部材と、を含む外部循環式ボールねじであって、前記ねじ軸は、断面形状が円形である棒状を呈し、外周面に螺旋状の転がり溝が設けられており、前記ナットには、前記ねじ軸を套設するための穿孔が設けられており、前記穿孔の内周面に前記転がり溝に対応する別の転がりが設けられており、前記転がり溝と前記別の転がり溝は一つの負荷経路を形成し、且つ前記ナットの外周面上に前記穿孔と連通する複数の取り付け孔が傾斜して設置されており、前記取り付け孔は、前記別の転がり溝に接続されており、前記二つの循環部材は、Ｌ字型を呈し、それぞれの一端が互いに接続されており、それぞれの他端が挿設段と定義され、それぞれの前記挿設段が前記取り付け孔に挿設されており、且つ前記循環部材は、上循環体と下循環体を含み、前記上循環体と前記循環体には、一つの半円弧形の回流通路がそれぞれ設けられており、前記下循環体の挿設段に一つの環状の充填部が設けられており、前記充填部が一つの環状の継ぎ回流通路を有し、前記継ぎ回流通路が前記下循環体の半回流通路と接続し、前記上循環体と前記下循環体を組み合わせて前記循環部材を形成するとともに、二つの前記半回流通路と前記継ぎ回流通路で一つの回流通路を構成し、且つ二つの前記循環部材の二つの前記回流通路が互いに接続されることにより、二つの回流通路を一つ回流の経路に構成させ、前記回流経路の両端を前記負荷経路と接続して一つの完全な循環経路を構成し、前記循環経路中に前記転がり体を配置し、且つ前記上循環体と下循環体は前記取り付け孔の軸方向を組み合わせ方向又は分離方向とすることを特徴とする、外部循環式ボールねじを提供する。 Claim 2 of the present invention is an external circulation ball screw including a plurality of rolling elements, a screw shaft, a nut, and at least two circulation members, and the screw shaft has a circular cross-sectional shape. It has a rod shape and is provided with a spiral rolling groove on the outer peripheral surface, and the nut is provided with a perforation for installing the screw shaft, and the rolling groove is provided on the inner peripheral surface of the perforation. Another corresponding rolling is provided, the rolling groove and the another rolling groove form one load path, and a plurality of mounting holes communicating with the perforations are inclined on the outer peripheral surface of the nut. The mounting hole is connected to the other rolling groove, the two circulation members are L-shaped, one end of each is connected to each other, and the other end is inserted. Each stage is defined as a stage. The circulating member includes an upper circulating body and a lower circulating body, and each of the upper circulating body and the circulating body is provided with a semicircular circular circulation passage. And an annular filling portion is provided at an insertion stage of the lower circulation body, the filling portion has an annular circulation flow passage, and the circulation flow passage is the lower circulation passage. The circulation member is formed by combining the upper circulation body and the lower circulation body, and one circulation passage is formed by the two half circulation passages and the joint circulation passage. And the two circulation passages of the two circulation members are connected to each other so that the two circulation passages are configured as one circulation path, and both ends of the circulation path are connected to the load path. To form one complete circulation path, and arrange the rolling elements in the circulation path. And, and the upper circulating member and the lower circulating body, characterized in that the axial combinations direction or separation direction of the mounting hole, providing an external circulation type ball screw.
前記上循環体と前記下循環体には、複数の凹凸を有する位置決め部がそれぞれ設けられる。 The upper circulation body and the lower circulation body are each provided with positioning portions having a plurality of irregularities.
前記ナットの前記取り付け孔には、受け面が設けられており、前記下循環体には、支え面が設けられており、前記支え面が前記受け面と係合することで、回流通路の直線段の回転自由度を制限する。 The mounting hole of the nut is provided with a receiving surface, the lower circulation body is provided with a supporting surface, and the supporting surface engages with the receiving surface, thereby Limit the degree of rotational freedom of the linear stage.
前記上循環体と前記下循環体は、それぞれの接合面を有し、二つの前記接合面が互いに接触し、且つ前記接合面を前記上循環体と前記下循環体の組合せ方向又は分離方向と平行して設置する。 The upper circulation body and the lower circulation body have respective joint surfaces, the two joint surfaces are in contact with each other, and the joint surface is defined as a combination direction or a separation direction of the upper circulation body and the lower circulation body. Install in parallel.
本考案は上記の構成を有するものであり、組み立てが容易になり、しかも一切の補助治具及び潤滑油を必要とせず、製造コストを省くことができる。作業員が両手で転がり体を取って充填することができるので、作業に便利だけではなく、作業時間を大幅に短縮することができる。 The present invention has the above-described configuration, facilitates assembly, and does not require any auxiliary jig and lubricating oil, thereby reducing the manufacturing cost. Since the operator can take the rolling body with both hands and fill it, it is not only convenient for the work but also the work time can be greatly shortened.
以下、本考案の実施の形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
本考案に係る外部循環式ボールねじの実施例１は、図１乃至図１１に示すように、ねじ軸５、ナット６と、少なくとも二つの循環部材８と、複数の転がり体９と、固定蓋７と、を含む。 As shown in FIGS. 1 to 11, Embodiment 1 of the external circulation ball screw according to the present invention includes a screw shaft 5, a nut 6, at least two circulation members 8, a plurality of rolling elements 9, and a fixed lid. 7 and.
前記ねじ軸５は、断面形状が円形である棒状を呈し、その外周面に螺旋状の転がり溝５１が設けられている。 The screw shaft 5 has a rod shape having a circular cross-sectional shape, and a spiral rolling groove 51 is provided on the outer peripheral surface thereof.
前記ナット６には、前記ねじ軸５を套設するための穿孔６１が設けられており、前記穿孔６１の内周面に前記転がり溝５１に対応する別の転がり溝６１１が設けられており、前記転がり溝５１と前記別の転がり溝６１１は一つの負荷経路を形成し、且つ前記ナットの外周面上に前記穿孔６１と連通する複数の取り付け孔６２が傾斜して設置されており、前記取り付け孔６２は、前記別の転がり溝６１１に接続されており、且つ前記取り付け孔の周囲には、受け面６３が設けられている。ここで、傾斜して設置された取り付け孔６２は、図１１に示すように、中心軸線６２１を有し、この中心軸線６２１とナット６の受け面６３との間には、夾角Ｄを有し、この夾角Ｄは、０〜９０度範囲内であり、故にこの取り付け孔６２の設置は傾斜設置という。その他、前記取り付け孔６２の中心軸線６２１の延伸方向は、軸方向Ｇと定義される。 The nut 6 is provided with a perforation 61 for fitting the screw shaft 5, and another rolling groove 611 corresponding to the rolling groove 51 is provided on the inner peripheral surface of the perforation 61. The rolling groove 51 and the other rolling groove 611 form one load path, and a plurality of mounting holes 62 communicating with the perforations 61 are installed on the outer peripheral surface of the nut at an inclination. The hole 62 is connected to the other rolling groove 611, and a receiving surface 63 is provided around the mounting hole. Here, as shown in FIG. 11, the mounting hole 62 installed at an inclination has a central axis 621, and has a depression angle D between the central axis 621 and the receiving surface 63 of the nut 6. The depression angle D is in the range of 0 to 90 degrees, and therefore the installation of the mounting hole 62 is called inclined installation. In addition, the extending direction of the central axis 621 of the mounting hole 62 is defined as the axial direction G.
少なくとも二つの循環部材８を備え、本実施例１では、四つの循環部材８を備えるが、簡単のために、以下、二つの循環部材８を例にして説明する。二つの前記循環部材８は、外観が略Ｌ字型を呈し、少なくとも一つの当接端８Ａと一つの挿設段８Ｂとにより構成され、二つの循環部材８の二つの当接端８Ａが互いに接続されており、しかも前記挿設段８Ｂがそれぞれ前記取り付け孔６２に挿設されている（図４を参照）。且つ前記循環部材８は、上循環体８２と下循環体８３を含み、前記上循環体８２と前記下循環体８３には、一つの半回流通路８２１、８３１がそれぞれ設けられている。前記上循環体８２と前記下循環体８３を組み合わせて前記循環部材８を形成するときに、二つの前記半回流通路８２１、８３１で一つの回流通路８１を構成する。図示していないが、本考案では、回流経路が必ず二つの循環部材による一つの回流通路により構成され、且つ前記循環部材はプラスチック射出成形により製造される。前記回流経路は両端が負荷経路１００と互いに切って設置される。より具体的には、回流通路８１の導引段８１Ｃは、負荷経路１００と互いに切って設置される。これにより、一つの完全な循環経路（図示せず）を構成し、前記循環経路中に複数の転がり体９を配置し、この転がり体９は、ねじ軸５とナット６との間の伝動媒体として働く。また、前記回流経路の両端における下循環体８３には、一つの導き片８３２がそれぞれ設けられており、前記導き片８３２は、転がり体９を回流経路に導き、これにより、転がり体９の循環がよりスムーズになる。 Although at least two circulation members 8 are provided and four circulation members 8 are provided in the first embodiment, for the sake of simplicity, two circulation members 8 will be described below as an example. The two circulation members 8 are substantially L-shaped in appearance, and are configured by at least one contact end 8A and one insertion stage 8B. The two contact ends 8A of the two circulation members 8 are mutually connected. In addition, the insertion stages 8B are respectively inserted into the mounting holes 62 (see FIG. 4). The circulation member 8 includes an upper circulation body 82 and a lower circulation body 83, and the upper circulation body 82 and the lower circulation body 83 are provided with one half-circulation passages 821, 831, respectively. When the circulation member 8 is formed by combining the upper circulation body 82 and the lower circulation body 83, the two half circulation paths 821, 831 constitute one circulation path 81. Although not shown, in the present invention, the circulation path is always constituted by one circulation path constituted by two circulation members, and the circulation member is manufactured by plastic injection molding. Both ends of the circulation path are cut from the load path 100 and installed. More specifically, the guiding stage 81 </ b> C of the circulation passage 81 is installed so as to be cut from the load path 100. Thereby, one complete circulation path (not shown) is constituted, and a plurality of rolling bodies 9 are arranged in the circulation path, and the rolling bodies 9 are transmission media between the screw shaft 5 and the nut 6. Work as. In addition, one guiding piece 832 is provided in each of the lower circulation bodies 83 at both ends of the circulating path, and the guiding piece 832 guides the rolling body 9 to the circulating path, thereby circulating the rolling body 9. Becomes smoother.
固定蓋７は、前記受け面６３上に設けられており、しかも固定溝７１を有し、この固定溝７１は、前記循環部材８を収容して固定するものである。 The fixing lid 7 is provided on the receiving surface 63 and has a fixing groove 71, and the fixing groove 71 accommodates and fixes the circulation member 8.
引き続き、上記の各構成要素の関連と作用効果を説明する。図５と図６に示すように、上循環体８２と下循環体８３は取り付け孔６２の軸方向Ｇを組み合わせ方向又は分離方向として取り付けられるか、又は取り外される。このような設計によって、回流通路８１に転がり体９をより簡単に入れることができる。即ち、ボールねじを組み立てるときに、まず二つの下循環体８３を取り付け孔中に取り付け、さらに、転がり体９を半回流通路８３１に１個ずつ入れる。二つの半回流通路８３１を充満した後に、下循環体８３に上循環体８２を蓋設して循環部材８を構成する。このようにして、ボールねじの組み立てを完成する。したがって、本考案の循環部材８の組み立てでは、公知の技術に比べて効率が大幅に向上し、且つ何れもの治具及び潤滑油等の補助物品を必要とせず、製造コストを省くことができる。なお、この組み立てでは、図６に示すように、転がり体９が負過経路１００内に充満されることを前提とし、このようにして、転がり体９は負荷経路１００へ落下することが起きない。 Next, the relationship and operational effects of each of the above components will be described. As shown in FIG. 5 and FIG. 6, the upper circulation body 82 and the lower circulation body 83 are attached or detached with the axial direction G of the attachment hole 62 as the combination direction or the separation direction. With such a design, the rolling body 9 can be put into the circulating passage 81 more easily. That is, when assembling the ball screw, first, the two lower circulation bodies 83 are attached to the attachment holes, and the rolling bodies 9 are put into the half-circulation passage 831 one by one. After filling the two half-circulation passages 831, the circulation member 8 is configured by covering the lower circulation body 83 with the upper circulation body 82. In this way, the assembly of the ball screw is completed. Therefore, in the assembly of the circulation member 8 of the present invention, the efficiency is greatly improved as compared with the known technique, and no auxiliary articles such as jigs and lubricating oil are required, and the manufacturing cost can be saved. In this assembly, as shown in FIG. 6, it is assumed that the rolling element 9 is filled in the negative passage 100, and thus the rolling element 9 does not fall into the load path 100. .
さらに、図７乃至図１１を参照されたい。上循環体８２と下循環体８３の両者を結合するときのより良い固定効果を得るために、上循環体８２と下循環体８３とに、複数の凹凸を有する位置決め部８２２、８３３をそれぞれ設け、これらの位置決め部８２２、８３３は、転がり体９が回流通路８１へ進入するとき、その速度が極めて速いため、回流通路８１の壁面、特に転がり体９が転向段８１Ｂと衝突する箇所Ｂと衝突することを防止することができる。特に図１０に示すように、箇所Ｂでは、転がり体９が転がり体進入方向Ｙに沿って導き段８１Ｃへ進入する速度が極めて速く、しかも導き段８１Ｃが直ぐに転向段８１Ｂと接続し、転がり体９を回流通路８１の直線段８１Ａにスムーズに転向させる功能を果たすのである。この構成により、上循環体８２と下循環体８３との間の分離を回避することができ、且つ循環部材８の全体強度を高めることができる。 In addition, please refer to FIGS. In order to obtain a better fixing effect when combining both the upper circulation body 82 and the lower circulation body 83, the upper circulation body 82 and the lower circulation body 83 are provided with positioning portions 822 and 833 having a plurality of irregularities, respectively. These positioning portions 822 and 833 have a very high speed when the rolling body 9 enters the circulating passage 81, and therefore, the wall surface of the circulating passage 81, particularly the location B where the rolling body 9 collides with the turning stage 81B. Can be prevented from colliding with. In particular, as shown in FIG. 10, at the point B, the rolling body 9 enters the guiding stage 81C along the rolling body approaching direction Y, and the guiding stage 81C is immediately connected to the turning stage 81B. The function of smoothly turning 9 to the linear step 81A of the circulation passage 81 is achieved. With this configuration, separation between the upper circulation body 82 and the lower circulation body 83 can be avoided, and the overall strength of the circulation member 8 can be increased.
また、図８Ａと図８Ｂを参照されたい。循環部材８の寿命と強度をより一層強化するために、上循環体８２と下循環体８３は、それぞれの接合面８２３、８３５を有し、二つの前記接合面８２３、８３５が互いに接触する。しかも前記接合面８２３、８３５を前記上循環体８２と前記下循環体８３の組合せ方向又は分離方向と平行して設置する。平行設置するのが最適であるが、垂直設置してもよい。図１０に示すように、両接合面８２３、８３５が互いに接触して得られた接合線Ｘが前記箇所Ｂと交差しない。しかも位置決め部８２２、８３３によって、上循環体８２が分離方向Ｃに沿って下循環体８３から離れることを防止することができる。そして、接合面８２３、８３３を転向段８１Ｂの衝突する箇所Ｂに置かれることを回避することができ、箇所Ｂを完全な曲面に形成することができ、強度と耐用性を向上することができる。 See also FIGS. 8A and 8B. In order to further enhance the life and strength of the circulation member 8, the upper circulation body 82 and the lower circulation body 83 have respective joint surfaces 823 and 835, and the two joint surfaces 823 and 835 are in contact with each other. Moreover, the joint surfaces 823 and 835 are installed in parallel with the combination direction or separation direction of the upper circulation body 82 and the lower circulation body 83. Parallel installation is optimal, but vertical installation is also possible. As shown in FIG. 10, the joint line X obtained by bringing the joint surfaces 823 and 835 into contact with each other does not intersect the portion B. In addition, the positioning parts 822 and 833 can prevent the upper circulating body 82 from separating from the lower circulating body 83 along the separation direction C. And it can avoid putting the joint surfaces 823 and 833 in the location B which the turning stage 81B collides, the location B can be formed in a complete curved surface, and strength and durability can be improved. .
さらに、図１１を参照されたい。前記ナット６の前記取り付け孔６２の周囲には、受け面６３が設けられており、前記下循環体８３には、支え面８３４が設けられており、前記支え面８３４が前記受け面６３と係合する。これにより、転がり体９が回流通路８１の導き段８１Ｃへ進入するとき、発生される衝突力を低減することができ、循環部材８の当接段８Ａの回転自由度Ｒを制限し、且つ循環部材８の挿設段８Ｂが移動方向Ｔへ移動することを制限することができる。 In addition, please refer to FIG. A receiving surface 63 is provided around the mounting hole 62 of the nut 6, and a supporting surface 834 is provided on the lower circulation body 83, and the supporting surface 834 is engaged with the receiving surface 63. Match. Thereby, when the rolling body 9 enters the guiding stage 81C of the circulation passage 81, the generated collision force can be reduced, the rotational freedom degree R of the contact stage 8A of the circulation member 8 is limited, and It can restrict | limit that the insertion step 8B of the circulation member 8 moves to the moving direction T. FIG.
図１２、図１３Ａ、図１３Ｂ、第１４及び図１５は本考案の実施例２を示すものである。実施例２では、循環部材８は外観が略Ｌ字型を呈し、両循環部材の一端が互いにそれぞれ接続しており、他端がナット６の取り付け孔６２にそれぞれ挿設されており、この他端を挿設段８Ｂと定義する。循環部材８は、上循環体８２と下循環体８３を含み、上循環体８２と下循環体８３には、半円形の半回流通路８２１、８３１がそれぞれ設けられている。実施例２と実施例１の相違点は、下循環体８３の挿設段８Ｂに一つの環状の充填部８３５が設けられており、前記充填部８３５が一つの環状の継ぎ回流通路８３５１を有し、この継ぎ回流通路８３５１が下循環体８３の半回流通路８３１と継ぐ点にある。 12, FIG. 13A, FIG. 13B, FIG. 14 and FIG. 15 show Embodiment 2 of the present invention. In the second embodiment, the circulation member 8 is substantially L-shaped in appearance, one end of each circulation member is connected to each other, and the other end is inserted into the mounting hole 62 of the nut 6. The end is defined as the insertion stage 8B. The circulation member 8 includes an upper circulation body 82 and a lower circulation body 83, and the upper circulation body 82 and the lower circulation body 83 are provided with semicircular semi-circulation passages 821 and 831, respectively. The difference between the second embodiment and the first embodiment is that an annular filling portion 835 is provided in the insertion stage 8B of the lower circulation body 83, and the filling portion 835 has one annular circulatory flow passage 8351. The joint circulation passage 8351 is at a point where it joins the half circulation passage 831 of the lower circulation body 83.
前記上循環体８２と前記下循環体８３を組み合わせて循環部材８を構成するときは、両半回流通路８２１、８３１と継ぎ回流通路８３５１とによって、一つの回流通路８１を構成する。前記充填部８３５には、位置決め部８３５２が設けられており、しかも上循環体８２には下循環体８３の位置決め部８３５２に対応する位置決め部８２２が設けられており、両位置決め部８２２、８３５２は、凹凸の組合せで係合される。充填部８３５の外縁面はナット６の取り付け孔６２の内縁面と同一である。前記充填部８３５を取り付け孔６２に挿設して、取り付け孔６２の内縁面６２２と接触させることにより、下循環体８３を位置決める（図１５を参照）。これにより、組み立ての作業員にとって、作業に便利だけではなく、両手で転がり体を取って充填することができる。したがって、転がり体の落下や下循環体の傾斜といった問題を回避するとともに、作業時間を大幅に短縮することができる。 When the circulation member 8 is configured by combining the upper circulation body 82 and the lower circulation body 83, one circulation path 81 is configured by the both half circulation paths 821, 831 and the circulation circulation path 8351. The filling portion 835 is provided with a positioning portion 8352, and the upper circulation body 82 is provided with a positioning portion 822 corresponding to the positioning portion 8352 of the lower circulation body 83. Both positioning portions 822 and 8352 are , Engaged by a combination of irregularities. The outer edge surface of the filling portion 835 is the same as the inner edge surface of the mounting hole 62 of the nut 6. The filling portion 835 is inserted into the attachment hole 62 and brought into contact with the inner edge surface 622 of the attachment hole 62, thereby positioning the lower circulation body 83 (see FIG. 15). As a result, it is possible not only for the assembly operator to work, but also for taking and filling the rolling body with both hands. Therefore, it is possible to avoid problems such as falling rolling bodies and tilting the lower circulation body, and to greatly shorten the working time.
先行技術に係る部分
１：ねじ軸、
１１：転がり溝
２：ナット
２１：穿孔
２１１：転がり溝
２２：取り付け孔
３：固定蓋
４：循環部材
４１：第１部材
４２：第２部材
４３：回流通路
Ｇ：径方向
本考案に係る部分
５：ねじ軸
５１：転がり溝
６：ナット
６１：穿孔
６１１：転がり溝
６２：取り付け孔
６２１：中心軸線
６２２：内縁面
６３：受け面
７：固定蓋
７１：固定溝
８：循環部材
８Ａ：当接段
８Ｂ：挿設段
８１：回流通路
８１Ａ：直線段
８１Ｂ：転向段
８１Ｃ：導き段
８２：上循環体
８２１、８３１：半回流通路
８２２、８３３、８３５２：位置決め部
８２３、８３５：接合面
８３：下循環体
８３２：導き片
８３４：支え面
８３５：充填部
８３５１：継ぎ回流通路
９：転がり体
１００：負荷経路
Ｂ：衝突箇所
Ｄ：夾角
Ｘ：接合線（又は継ぎ位置）
Ｙ：転がり体進入方向
Ｇ：軸方向
Ｒ：回転自由度
Ｔ：移動方向
Ｃ：分離方向
Prior art part 1: Screw shaft,
11: Rolling groove 2: Nut 21: Perforation 211: Rolling groove 22: Mounting hole 3: Fixed lid 4: Circulating member 41: First member 42: Second member 43: Circulating passage G: Radial direction Part according to the present invention 5: Screw shaft 51: Rolling groove 6: Nut 61: Drilling 611: Rolling groove 62: Mounting hole 621: Center axis 622: Inner edge surface 63: Receiving surface 7: Fixed lid 71: Fixed groove 8: Circulating member 8A: Contact Stage 8B: Insertion stage 81: Circulation path 81A: Linear stage 81B: Turning stage 81C: Guiding stage 82: Upper circulation body 821, 831: Half circulation path 822, 833, 8352: Positioning portion 823, 835: Joining surface 83: Lower circulating body 832: Guide piece 834: Supporting surface 835: Filling portion 8351: Joint circulation passage 9: Rolling body 100: Load path B: Colliding point D: Depression angle X: Joining line (or joint position)
Y: rolling body approach direction G: axial direction R: degree of freedom of rotation T: moving direction C: separating direction
Claims (5)
前記ねじ軸は、断面形状が円形である棒状を呈し、外周面に螺旋状の転がり溝が設けられており、
前記ナットには、前記ねじ軸を套設するための穿孔が設けられており、前記穿孔の内周面に前記転がり溝に対応する別の転がり溝が設けられており、前記転がり溝と前記別の転がり溝は一つの負荷経路を形成し、且つ前記ナットの外周面上に前記穿孔と連通する複数の取り付け孔が傾斜して設置されており、前記取り付け孔は、前記別の転がり溝に接続されており、
前記二つの循環部材は、Ｌ字型を呈し、それぞれの一端が互いに接続されており、それぞれの他端が前記取り付け孔に挿設されており、且つ前記循環部材は、上循環体と下循環体を含み、前記上循環体と前記下循環体には、一つの半回流通路がそれぞれ設けられており、前記上循環体と前記下循環体を組み合わせて前記循環部材を形成するとともに、二つの前記半回流通路で一つの回流通路を構成し、且つ二つの前記循環部材の二つの前記回流通路を接続することにより、一つ回流経路を構成し、前記回流経路の両端を前記負荷経路と接続して一つの完全な循環経路を構成し、前記循環経路中に前記転がり体を配置し、且つ前記上循環体と下循環体は前記取り付け孔の軸方向を組み合わせ方向又は分離方向とすることを特徴とする、外部循環式ボールねじ。 An external circulation type ball screw including a plurality of rolling bodies, a screw shaft, a nut, and at least two circulation members,
The screw shaft has a rod shape with a circular cross-sectional shape, and a spiral rolling groove is provided on the outer peripheral surface,
The nut is provided with a perforation for installing the screw shaft, and another rolling groove corresponding to the rolling groove is provided on the inner peripheral surface of the perforation, and the rolling groove is separated from the rolling groove. The rolling groove forms a load path, and a plurality of mounting holes communicating with the perforations are installed on the outer peripheral surface of the nut at an inclination, and the mounting holes are connected to the other rolling groove. Has been
The two circulation members have an L-shape, one end of each is connected to each other, the other end is inserted into the mounting hole, and the circulation member includes an upper circulation body and a lower circulation. The upper circulation body and the lower circulation body are each provided with one semi-circulation passage, and the circulation member is formed by combining the upper circulation body and the lower circulation body. One semi-circulation passage constitutes one circulation passage, and the two circulation passages of the two circulation members are connected to constitute one circulation path, and both ends of the circulation path are connected to the two ends. Connected to the load path to form one complete circulation path, the rolling body is arranged in the circulation path, and the upper circulation body and the lower circulation body are combined in the axial direction of the mounting hole or separated direction External circulation, characterized by The ball screw.
前記ねじ軸は、断面形状が円形である棒状を呈し、外周面に螺旋状の転がり溝が設けられており、
前記ナットには、前記ねじ軸を套設するための穿孔が設けられており、前記穿孔の内周面に前記転がり溝に対応する別の転がりが設けられており、前記転がり溝と前記別の転がり溝は一つの負荷経路を形成し、且つ前記ナットの外周面上に前記穿孔と連通する複数の取り付け孔が傾斜して設置されており、前記取り付け孔は、前記別の転がり溝に接続されており、
前記二つの循環部材は、Ｌ字型を呈し、それぞれの一端が互いに接続されており、それぞれの他端が挿設段と定義され、それぞれの前記挿設段が前記取り付け孔に挿設されており、且つ前記循環部材は、上循環体と下循環体を含み、前記上循環体と前記循環体には、一つの半円弧形の回流通路がそれぞれ設けられており、前記下循環体の挿設段に一つの環状の充填部が設けられており、前記充填部が一つの環状の継ぎ回流通路を有し、前記継ぎ回流通路が前記下循環体の半回流通路と接続し、前記上循環体と前記下循環体を組み合わせて前記循環部材を形成するとともに、二つの前記半回流通路と前記継ぎ回流通路で一つの回流通路を構成し、且つ二つの前記循環部材の二つの前記回流通路が互いに接続されることにより、二つの回流通路を一つ回流の経路に構成させ、前記回流経路の両端を前記負荷経路と接続して一つの完全な循環経路を構成し、前記循環経路中に前記転がり体を配置し、且つ前記上循環体と下循環体は前記取り付け孔の軸方向を組み合わせ方向又は分離方向とすることを特徴とする、外部循環式ボールねじ。 An external circulation type ball screw including a plurality of rolling bodies, a screw shaft, a nut, and at least two circulation members,
The screw shaft has a rod shape with a circular cross-sectional shape, and a spiral rolling groove is provided on the outer peripheral surface,
The nut is provided with a perforation for fitting the screw shaft, and another rolling corresponding to the rolling groove is provided on the inner peripheral surface of the perforation, and the rolling groove and the another The rolling groove forms one load path, and a plurality of mounting holes communicating with the perforations are installed at an inclination on the outer peripheral surface of the nut, and the mounting holes are connected to the other rolling groove. And
The two circulation members have an L-shape, each one end is connected to each other, each other end is defined as an insertion step, and each insertion step is inserted into the mounting hole. And the circulation member includes an upper circulation body and a lower circulation body, and the upper circulation body and the circulation body are each provided with one semicircular arc-shaped circulation passage, and the lower circulation body An annular filling portion is provided in the insertion stage, and the filling portion has one annular circulatory passage, and the circulatory passage is connected to the semicirculatory passage of the lower circulation body. The upper circulation body and the lower circulation body are combined to form the circulation member, and the two half-circulation passages and the joint circulation passage constitute one circulation passage, and the two circulation circuits By connecting the two circulation passages of the member together, the two circulation passages A recirculation path, both ends of the recirculation path are connected to the load path to form one complete circulation path, the rolling body is disposed in the circulation path, and the upper circulation body and the lower circulation path are arranged. An external circulation type ball screw characterized in that the circulating body has an axial direction of the mounting hole as a combination direction or a separation direction.
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| JP2011001929U JP3168571U (en) | 2011-04-07 | 2011-04-07 | External circulation ball screw |
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| JP2011001929U JP3168571U (en) | 2011-04-07 | 2011-04-07 | External circulation ball screw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425262A (en) * | 2019-08-31 | 2019-11-08 | 深圳盛世电梯有限公司 | A kind of circulator and the ball wire bar pair comprising it |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425262A (en) * | 2019-08-31 | 2019-11-08 | 深圳盛世电梯有限公司 | A kind of circulator and the ball wire bar pair comprising it |
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