JP2014204621A - Motor and manufacturing method motor - Google Patents
Motor and manufacturing method motor Download PDFInfo
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- JP2014204621A JP2014204621A JP2013080937A JP2013080937A JP2014204621A JP 2014204621 A JP2014204621 A JP 2014204621A JP 2013080937 A JP2013080937 A JP 2013080937A JP 2013080937 A JP2013080937 A JP 2013080937A JP 2014204621 A JP2014204621 A JP 2014204621A
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- hub
- rotor
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- shaft
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Abstract
Description
本発明は、回転検出器付きモータの回転子の回転軸と、回転検出器の回転軸とを連結するオルダム継手を備えたモータとその製造方法に関するものである。 The present invention relates to a motor including an Oldham coupling that connects a rotation shaft of a rotor of a motor with a rotation detector and a rotation shaft of the rotation detector, and a method for manufacturing the motor.
例えば、サーボモータの回転子の回転を検出する場合、一般的に回転子の回転軸に回転検出器の回転軸を連結して、回転検出器でモータの回転検出を行うようにしている。この場合、回転子の回転軸と回転検出器の回転軸の軸心が精度良く一致していれば何の支障もなく良好な回転検出が行える。 For example, when detecting the rotation of the rotor of the servo motor, the rotation shaft of the rotation detector is generally connected to the rotation shaft of the rotor, and the rotation of the motor is detected by the rotation detector. In this case, as long as the axis of rotation of the rotor and the axis of rotation of the rotation detector coincide with each other with high accuracy, good rotation detection can be performed without any trouble.
しかし、回転子の回転軸と回転検出器の回転軸の軸心を精度良く一致させることは、限られた時間とコストの中では現実的には難しい。そこで回転子の回転軸と回転検出器の回転軸をオルダム継手を用いて連結している(例えば、特許文献1参照)。 However, it is practically difficult to match the rotation shaft of the rotor and the rotation shaft of the rotation detector with high accuracy within a limited time and cost. Therefore, the rotating shaft of the rotor and the rotating shaft of the rotation detector are connected using an Oldham coupling (see, for example, Patent Document 1).
前記オルダム継手は前記両回転軸ハブ装着端部に取り付けられたハブと、前記両ハブ間に配置され、前記両ハブと嵌合するスライダとからなっている。前記ハブはアルミニウム、またはその合金、およびパイプ材により形成され、前記スライダはポリカーボネート樹脂で構成されている。前記ハブは、回転子の回転軸と前記ハブ自体に構成されためねじを用い、おねじによる締付固定、および焼ばめにより固定されていた。 The Oldham coupling is composed of a hub attached to both rotary shaft hub mounting ends and a slider disposed between the hubs and fitted to the hubs. The hub is made of aluminum or an alloy thereof, and a pipe material, and the slider is made of polycarbonate resin. The hub is constituted by a rotating shaft of a rotor and the hub itself, and therefore, a screw is used, and the hub is fixed by fastening with a male screw and shrink fitting.
ハブを回転子の回転軸に固定するオルダム継手としては、例えば特許文献1に記載されたオルダム継手がある。特許文献1では、回転子の回転軸に取り付けられるアルミニウム合金により形成されたハブは、ハブ自体に構成されためねじを用い、おねじにより締付固定されていた。 As an Oldham coupling which fixes a hub to the rotating shaft of a rotor, there is an Oldham joint described in Patent Document 1, for example. In Patent Document 1, a hub formed of an aluminum alloy attached to a rotating shaft of a rotor is configured on the hub itself, and thus uses a screw and is fastened and fixed by a male screw.
しかしながら、この技術では、ハブ自体に回転子の回転軸と締結固定するためのめねじ、すなわち締付固定部を設ける必要があり、どうしてもハブ自体のサイズが大きくなり、さらにそれに伴いモータサイズが大きくなるため、モータが高価になるという課題があった。 However, in this technology, it is necessary to provide the hub itself with a female screw for fastening and fixing to the rotor rotation shaft, that is, a fastening fixing portion, which inevitably increases the size of the hub itself and further increases the motor size. Therefore, there has been a problem that the motor becomes expensive.
また、焼ばめ固定の場合、ハブ自体が小さいため、焼ばめ加熱温度を高くしなければならず、設備が複雑になり、設備費が高価になるという課題があった。 Further, in the case of shrink fitting, since the hub itself is small, there is a problem that the heating temperature for shrink fitting must be increased, the equipment becomes complicated, and the equipment cost becomes expensive.
前記従来の課題を解決するため、本発明は、回転子の回転軸を回転検出器の回転軸に回転伝達するオルダム継手を備え、前記オルダム継手が、前記両回転軸のハブ装着端部に取り付けられた両ハブと、前記両ハブ間に配置され、両ハブと嵌合するスライダとからなるモータにおいて、前記2つの回転軸のうち、回転子の回転軸のハブ装着端部にめねじを備えたことを特徴とするものである。 In order to solve the above-described conventional problems, the present invention includes an Oldham coupling that transmits a rotation shaft of a rotor to a rotation shaft of a rotation detector, and the Oldham coupling is attached to a hub mounting end portion of the both rotation shafts. In a motor comprising both of the two hubs and a slider disposed between the hubs and fitted to the hubs, a female screw is provided at a hub mounting end of the rotor rotation shaft of the two rotation shafts. It is characterized by that.
また本発明は、回転子の回転軸のハブ装着端部に備えられためねじと、前記めねじに対
応するおねじを係合させることにより発生する推力により前記回転子の回転軸にハブを取り付けることを特徴とするモータの製造方法である。
Further, the present invention is provided at the hub mounting end portion of the rotating shaft of the rotor, and the hub is attached to the rotating shaft of the rotor by a thrust generated by engaging a screw and a male screw corresponding to the female screw. This is a method for manufacturing a motor.
本発明によれば締付固定部を設ける必要が無くハブを構成でき、ハブの小型化、さらにはモータサイズの小型化が可能となり、安価なモータを提供することができる。また大掛かりで高価な設備を必要とすることなく、容易に前記回転子の回転軸にハブを装着することができる。 According to the present invention, it is not necessary to provide a tightening and fixing portion, and a hub can be configured. The hub can be downsized and the motor size can be reduced, and an inexpensive motor can be provided. Further, the hub can be easily mounted on the rotating shaft of the rotor without requiring large and expensive equipment.
(実施の形態1)
以下、本発明の第1の実施の形態について図1、および図2を用いて説明する。図1は、本発明の実施例におけるオルダム継手を示す斜視図である。
(Embodiment 1)
Hereinafter, a first embodiment of the present invention will be described with reference to FIG. 1 and FIG. FIG. 1 is a perspective view showing an Oldham coupling in an embodiment of the present invention.
固定子コアと、この固定子コアの内周に配置された回転子と、前記固定子コアの内周面と所定の空隙を介して前記回転子の外周に固定された磁石と、前記回転子の回転軸を回転検出器の回転軸に回転伝達するオルダム継手を備え、前記オルダム継手が、前記両回転軸のハブ装着端部に取り付けられたハブと、前記ハブ間に配置され、両ハブと嵌合するスライダとからなるモータのうち、図1における本発明のオルダム継手5は、従来のオルダム継手と同様に、軸端が相対向する2つの回転軸、例えば回転子の回転軸1と、回転検出器の回転軸9の間に介在され、回転子の回転軸1に装着されるハブ6、および回転検出器の回転軸9に装着されるハブ7と、前記ハブ6、7の間に配置され、前記ハブ6、7と嵌合するスライダ8とからなっている。 A stator core, a rotor disposed on an inner periphery of the stator core, a magnet fixed to an outer periphery of the rotor via an inner peripheral surface of the stator core and a predetermined gap, and the rotor An Oldham coupling that transmits the rotation shaft of the rotation detector to the rotation shaft of the rotation detector, and the Oldham coupling is disposed between the hub mounting ends of the both rotation shafts, and is disposed between the hubs. Of the motor comprising the slider to be fitted, the Oldham coupling 5 of the present invention in FIG. 1 is similar to the conventional Oldham coupling in that two rotating shafts whose shaft ends face each other, for example, the rotating shaft 1 of the rotor, Between the hubs 6 and 7, the hub 6 is interposed between the rotation shafts 9 of the rotation detector and mounted on the rotation shaft 1 of the rotor, and the hub 7 mounted on the rotation shaft 9 of the rotation detector. The slider 8 is arranged and fitted with the hubs 6 and 7. .
回転子の回転軸1は軸受2によって支持される。回転子の回転軸1の軸受支持部1aは、ブラケット3に支持された軸受2の軸挿入部2aに挿入され、前記軸受2は軸受押え4によって固定される。 The rotating shaft 1 of the rotor is supported by a bearing 2. The bearing support portion 1 a of the rotating shaft 1 of the rotor is inserted into the shaft insertion portion 2 a of the bearing 2 supported by the bracket 3, and the bearing 2 is fixed by the bearing retainer 4.
前記ハブ6は中央部に前記回転子の回転軸、回転検出器の回転軸に嵌合する中央孔6aを有し、前記中央孔6aの径方向両側に凹部6bを有している。前記中央孔6aは回転子の回転軸1のハブ装着部1bに装着される。 The hub 6 has a central hole 6a that fits in the central portion of the rotation shaft of the rotor and the rotation shaft of the rotation detector, and has concave portions 6b on both radial sides of the central hole 6a. The central hole 6a is mounted on the hub mounting portion 1b of the rotating shaft 1 of the rotor.
前記スライダ8は、前記ハブの径方向両側に凹部6bに嵌合する凸部8aを有しており、前記ハブの径方向両側に凹部6b、前記スライダの凸部8aの嵌合によって、前記スライダ8は前記回転子の回転軸1に装着されたハブ6に装着される。 The slider 8 has convex portions 8a that fit into the concave portions 6b on both sides in the radial direction of the hub, and the slider 8 is fitted on the both sides in the radial direction of the hub by fitting the concave portions 6b and the convex portions 8a of the slider. 8 is mounted on a hub 6 mounted on the rotating shaft 1 of the rotor.
一方、回転検出器の回転軸9のハブ装着部9aは、前記ハブ7の中央孔7aに圧入により装着され、前記ハブ7が装着された回転検出器の回転軸9の軸受挿入部9bは、ブラケット12の軸受10、11を支持する軸受支持部12aに支持された前記軸受10、11の軸挿入部10a、11aが挿入され支持される。 On the other hand, the hub mounting portion 9a of the rotation shaft 9 of the rotation detector is mounted by press-fitting into the central hole 7a of the hub 7, and the bearing insertion portion 9b of the rotation shaft 9 of the rotation detector to which the hub 7 is mounted is The shaft insertion portions 10a and 11a of the bearings 10 and 11 supported by the bearing support portion 12a that supports the bearings 10 and 11 of the bracket 12 are inserted and supported.
前記軸受10、11に支持された回転検出器の回転軸9には回転検出器の回転板13が装着され、回転検出器の本体14がブラケット12の加工面12bに装着される。そして、前記回転検出器の回転軸9に装着されたハブ7は前記ハブ7の径方向両側に凹部7bを有し、凹部7bと前記ハブ6と装着されたスライダ8の凸部8bに装着される。 A rotation plate 13 of the rotation detector is mounted on the rotation shaft 9 of the rotation detector supported by the bearings 10 and 11, and a main body 14 of the rotation detector is mounted on the processing surface 12 b of the bracket 12. The hub 7 attached to the rotation shaft 9 of the rotation detector has recesses 7b on both radial sides of the hub 7, and is attached to the recesses 7b and the protrusions 8b of the slider 8 attached to the hub 6. The
これにより前記回転子の回転軸1と前記回転検出器の回転軸9は、前記ハブ6、7と前記スライダからなるオルダム継手5により接続され、回転検出器が回転子の回転検出を行うことができるようになる。 Thereby, the rotating shaft 1 of the rotor and the rotating shaft 9 of the rotation detector are connected by the Oldham coupling 5 comprising the hubs 6 and 7 and the slider, and the rotation detector detects the rotation of the rotor. become able to.
図2は、本発明の実施の形態1におけるハブ6と回転子の回転軸1を装着する方法を示す正面図である。図2において、ハブの中央孔6aと押え治具15の中央孔15aを通るおねじ16を回転子の回転軸1のめねじ1cと係合されることにより、推力が発生し、ハブ6を回転子の回転軸1のハブ6のハブ装着部1bに容易に圧入することができる。 FIG. 2 is a front view showing a method of mounting the hub 6 and the rotating shaft 1 of the rotor in Embodiment 1 of the present invention. In FIG. 2, a thrust is generated by engaging the male screw 16 passing through the central hole 6a of the hub and the central hole 15a of the holding jig 15 with the female screw 1c of the rotary shaft 1 of the rotor. It can be easily press-fitted into the hub mounting portion 1b of the hub 6 of the rotating shaft 1 of the rotor.
このとき、押え治具15とおねじ16はハブ6の圧入後、ハブ6および回転子の回転軸1から分離させ取り外すことができ、ハブ6の端面6cは、少なくともその一部が回転子の回転軸1に接触し固定される。 At this time, the presser jig 15 and the male screw 16 can be separated and removed from the hub 6 and the rotary shaft 1 of the rotor after the hub 6 is press-fitted, and at least a part of the end surface 6c of the hub 6 is rotated by the rotor. It contacts and is fixed to the shaft 1.
この時、おねじ16はドライバ等の簡易な道具では回し、回転子の回転軸1のめねじ1cと係合し、ハブ6を回転子の回転軸1に装着することができる。 At this time, the male screw 16 can be turned with a simple tool such as a screwdriver, engaged with the female screw 1c of the rotor rotating shaft 1, and the hub 6 can be attached to the rotating shaft 1 of the rotor.
この方法であれば、ハブ自体に装着用のめねじを設けてボルトにより締付固定する必要が無く、ハブ自体の大型化、それに伴うモータサイズの大型化を防ぐことができ、さらにハブ装着のために大掛かりで高価な設備を必要とすることなく、容易に前記回転子の回転軸1にハブを装着することができる。 With this method, it is not necessary to provide an internal thread for mounting on the hub itself and fasten and fix it with bolts. This makes it possible to prevent the hub itself from becoming larger and the motor size from being increased, and further to installing the hub. Therefore, the hub can be easily mounted on the rotary shaft 1 of the rotor without requiring large and expensive equipment.
また、焼ばめを必要としないため、焼ばめ加熱温度を高くしなければならず、設備が複雑になり、設備費が高価になるという課題を解決し、安価なモータを提供することができる。また、焼ばめを必要としないため、焼ばめ後のハブ6の冷却を必要としないため、冷却に時間がかかるという課題を解決することもできる。また、この方法によれば、どのようなモータサイズであっても容易でかつ安価にハブ6を圧入することが可能である。 In addition, since a shrink fit is not required, it is necessary to increase the shrink fit heating temperature, to solve the problem that the equipment becomes complicated and the equipment cost is high, and to provide an inexpensive motor. it can. Moreover, since a shrink fit is not required, and cooling of the hub 6 after the shrink fit is not required, the problem that it takes time to cool can be solved. Further, according to this method, it is possible to press-fit the hub 6 easily and inexpensively regardless of the motor size.
本発明は、回転検出器付きモータの回転子の回転軸と、回転検出器の回転軸とを連結するオルダム継手を備えたモータに適用できる。 INDUSTRIAL APPLICABILITY The present invention can be applied to a motor including an Oldham coupling that connects a rotation shaft of a rotor of a motor with a rotation detector and a rotation shaft of the rotation detector.
1、9 回転軸
1a 軸受支持部
1b ハブ装着部
1c めねじ
2、10、11 軸受
2a、10a、11a 軸挿入部
3 ブラケット
4 軸受押え
5 オルダム継手
6、7 ハブ
6a、7a、15a 中央孔
6b、7b 凹部
8 スライダ
8a、8b 凸部
9a ハブ装着部
9b 軸受挿入部
12 ブラケット
12a 軸受支持部
12b 加工面
13 回転板
14 回転検出器の本体
15 押え治具
16 おねじ
DESCRIPTION OF SYMBOLS 1, 9 Rotating shaft 1a Bearing support part 1b Hub mounting part 1c Female thread 2, 10, 11 Bearing 2a, 10a, 11a Shaft insertion part 3 Bracket 4 Bearing presser 5 Oldham coupling 6, 7 Hub 6a, 7a, 15a Central hole 6b , 7b Concave part 8 Slider 8a, 8b Convex part 9a Hub mounting part 9b Bearing insertion part 12 Bracket 12a Bearing support part 12b Machining surface 13 Rotating plate 14 Rotation detector main body 15 Holding jig 16 Male thread
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2013080937A JP2014204621A (en) | 2013-04-09 | 2013-04-09 | Motor and manufacturing method motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2013080937A JP2014204621A (en) | 2013-04-09 | 2013-04-09 | Motor and manufacturing method motor |
Publications (1)
Publication Number | Publication Date |
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JP2014204621A true JP2014204621A (en) | 2014-10-27 |
Family
ID=52354600
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Application Number | Title | Priority Date | Filing Date |
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JP2013080937A Pending JP2014204621A (en) | 2013-04-09 | 2013-04-09 | Motor and manufacturing method motor |
Country Status (1)
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JP (1) | JP2014204621A (en) |
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2013
- 2013-04-09 JP JP2013080937A patent/JP2014204621A/en active Pending
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