JP7328800B2 - Coupling for position detector - Google Patents
Coupling for position detector Download PDFInfo
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- JP7328800B2 JP7328800B2 JP2019110849A JP2019110849A JP7328800B2 JP 7328800 B2 JP7328800 B2 JP 7328800B2 JP 2019110849 A JP2019110849 A JP 2019110849A JP 2019110849 A JP2019110849 A JP 2019110849A JP 7328800 B2 JP7328800 B2 JP 7328800B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/047—Accessories, e.g. for positioning, for tool-setting, for measuring probes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/26—Means for adjusting casings relative to their supports
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Motor Or Generator Frames (AREA)
Description
本発明は、工作機械等に用いられる位置検出器に内蔵されるカップリングに関する。 The present invention relates to a coupling incorporated in a position detector used in machine tools and the like.
位置検出器用カップリングは、モータ等の検出対象の固定部と位置検出器の固定部とを締結するために用いられる。位置検出器用カップリングの機能は、回転軸の軸振れ量を吸収することにより、発生する誤差を低減させたり、回転軸からの振動・衝撃等を吸収することにより、位置検出器の軸受や処理回路基板等を保護することである。このように振動や衝撃を吸収するための弾性が求められる一方で、回転方向に対しては、検出誤差を排除するために、また、共振周波数をより高くするために、高い剛性が求められる。 The position detector coupling is used to connect a fixed part of a detection target such as a motor and a fixed part of the position detector. The function of the position detector coupling is to reduce the error that occurs by absorbing the amount of shaft runout of the rotating shaft, and by absorbing the vibration and impact from the rotating shaft, the bearing and processing of the position detector. It is to protect the circuit board and the like. While elasticity is required to absorb vibrations and impacts, high rigidity is required in the direction of rotation to eliminate detection errors and to increase the resonance frequency.
図３は、従来のカップリングの斜視図を示す。 FIG. 3 shows a perspective view of a conventional coupling.
カップリングは、成形加工された１枚の板と２つのブロックから構成され、支持点１２０，１３０と、支持点３２０，３３０は位置検出器の固定部にボルトで固定され、支持点２２０，２３０と支持点４２０，４３０は２つのブロック９００，１００とボルトで固定され、２つのブロック９００，１００は検出対象の固定部側のリングの穴６００，８００にボルトで固定され、穴５００，７００は検出対象の固定部にボルトで固定される。 The coupling is made up of one molded plate and two blocks. and support points 420, 430 are bolted to two blocks 900, 100, the two blocks 900, 100 are bolted to holes 600, 800 in the ring on the side of the fixed part to be detected, and holes 500, 700 are It is fixed with a bolt to the fixed part to be detected.
このカップリングには中心に対して対向する位置に曲げ部１１０と３１０、曲げ部２１０と４１０が配置されている。曲げ部から周の接線方向に間隔を置いた位置にそれぞれ２点の支持点１２０，１３０，２２０，２３０，３２０，３３０，４２０，４３０を配置する。これにより、ｚ軸周りの回転力が働いた場合に曲げ部のそれぞれの支持点１２０，１３０，２２０，２３０，３２０，３３０，４２０，４３０は曲げ部１１０，２１０，３１０，４１０を主に板の圧縮、または、引張り方向の力で支えるため、高い剛性が得られる。また、曲げ部１１０，２１０，３１０，４１０に対して、その支持点１２０，１３０，２２０，２３０，３２０，３３０，４２０，４３０が間隔を置いて配置されることにより、ｘ方向の変位に対して、曲げ部１１０，３１０は支持点１２０，１３０，３２０，３３０に対して板厚方向に変位し、ｙ方向の変位に対して、曲げ部２１０，４１０は支持点２２０，２３０，４２０，４３０に対して板厚方向に変位することになるため、それぞれ弾性的に支持される。 The coupling has bends 110 and 310 and bends 210 and 410 arranged opposite to the center. Two support points 120, 130, 220, 230, 320, 330, 420, 430 are respectively arranged at positions spaced tangentially around the circumference from the bend. As a result, the support points 120, 130, 220, 230, 320, 330, 420, and 430 of the bent portions mainly bend the bent portions 110, 210, 310, and 410 when a rotational force around the z-axis acts. High rigidity can be obtained because it is supported by force in the direction of compression or tension. In addition, by arranging the support points 120, 130, 220, 230, 320, 330, 420, 430 of the bent portions 110, 210, 310, 410 at intervals, the displacement in the x direction is , the bent portions 110, 310 are displaced in the plate thickness direction with respect to the support points 120, 130, 320, 330, and the bent portions 210, 410 are displaced from the support points 220, 230, 420, 430 with respect to the displacement in the y direction. Since it is displaced in the plate thickness direction with respect to, each is elastically supported.
また、２つのブロック９００，１００はボルト固定部周辺をｚ方向に厚くすることで、支持点２２０，２３０，４２０，４３０を強固に支えるため、ｚ軸周りの回転力に対して高い剛性が得られる。 In addition, the two blocks 900 and 100 are thickened in the z-direction around the bolt fixing portion to firmly support the support points 220, 230, 420 and 430, so that high rigidity against rotational force around the z-axis can be obtained. be done.
なお、特許文献１には、被検出部が装着されたエンコーダ回転軸と、検出部が装着されたハウジング筐体と、検出部にて検出した信号をエンコーダ回転情報へ処理する回路基板と、被検出部と検出部とが空隙を介して対向配置するべく、エンコーダ回転軸を回転自在に軸支するエンコーダ軸受と、ハウジング筐体と固定子とを結合する板ばね状のカップリングとを備えるエンコーダ内蔵モータが記載されている。 It should be noted that Patent Document 1 discloses an encoder rotating shaft to which a detected part is attached, a housing housing to which a detecting part is attached, a circuit board for processing a signal detected by the detecting part into encoder rotation information, and a An encoder comprising an encoder bearing that rotatably supports an encoder rotary shaft and a plate spring-like coupling that couples a housing case and a stator so that the detection portion and the detection portion are arranged opposite to each other with a gap therebetween. A built-in motor is described.
図３に示す従来のカップリングでは、ｚ軸周りの回転力が働いた場合に曲げ部のそれぞれの支持点１２０，１３０，２２０，２３０，３２０，３３０，４２０，４３０を強固に支えるためには、２つの剛性の高いブロック９００，１００が必要であり、剛性を高くするために穴６００，８００にボルト固定する周辺部が肉厚である必要がある。そのため、モータ等の検出対象側の取付部が狭小でボルト固定部周辺に干渉物があるような場合には取り付けできない問題があった。 For the conventional coupling shown in FIG. , two rigid blocks 900, 100 are required, and the perimeter bolted to the holes 600, 800 needs to be thick for rigidity. Therefore, there is a problem that it cannot be mounted when the mounting portion of the detection target side of the motor or the like is narrow and there is an obstacle around the bolt fixing portion.
また、支持点２２０，２３０，４２０，４３０へのボルト固定時に内側から外側に向かって工具で締め付けるため、作業性が悪かった。 In addition, when fixing the bolts to the support points 220, 230, 420, 430, they are tightened with a tool from the inside to the outside, resulting in poor workability.
さらに、ボルト固定部周辺を肉厚にした部分の内側に曲げ部２１０，４１０を配置する必要があるため、ｚ軸周りの回転力に対して支える腕の長さを制限され、剛性を高めるための妨げになっていた。 Furthermore, since it is necessary to arrange the bent portions 210 and 410 inside the thickened portion around the bolt fixing portion, the length of the arm that supports against the rotational force around the z-axis is limited, and the rigidity is increased. was a hindrance to
位置検出器用カップリングは、取付時にｚ軸周りの回転方向に高い位置決め精度を要するため、２つの剛性の高いブロック９００，１００は成形加工のみでは穴精度不足となり、ネジ穴も必要であることから、フライス加工、タップ加工等の除去加工が必要であり、部品コストが高かった。 Since the coupling for the position detector requires high positioning accuracy in the direction of rotation around the z-axis when mounted, the two highly rigid blocks 900 and 100 will not have sufficient hole accuracy if only molding is performed, and screw holes are also required. , milling, tapping, and other removal processes were required, and the parts cost was high.
本発明は、これらの課題に鑑みなされたものであり、検出対象の固定部と位置検出器の固定部とを軸方向と半径方向に弾性的で、かつ捩じり剛性が高く、しかも低コストで作業性に優れる位置検出器用カップリングを提供することを目的とする。 The present invention has been made in view of these problems. It is an object of the present invention to provide a position detector coupling which is excellent in workability.
本発明は、検出対象の固定部と位置検出器の固定部とを結合するための位置検出器用カップリングであって、成形加工されたリング状の薄板と、第１および第２の厚板と、タップ加工された第３および第４の厚板と、を備え、前記薄板は、前記リング状の中心に対して互いに対向する位置に第１の曲げ部および第２の曲げ部が対として配設されるとともに、前記中心に対して対向する位置に第３の曲げ部および第４の曲げ部が対として配設され、前記第１の曲げ部および前記第２の曲げ部には、それぞれ周の接線方向に間隔を置いて２つの支持点が配設され、前記第３の曲げ部および前記第４の曲げ部には、それぞれ周の接線方向に間隔をおいて２つの支持点が配設され、前記第１の曲げ部および前記第２の曲げ部それぞれの前記２つの支持点は、前記位置検出器の固定部と締結され、前記第１の厚板及び前記第２の厚板は、前記薄板の面に直交する方向に屈曲した屈曲形状をなし、前記薄板の面に直交する方向に屈曲した部分には、それぞれ周の接線方向に間隔を置いて２つの支持点が配設され、前記第３の曲げ部の前記２つの支持点には、前記第１の厚板の前記２つの支持点を挟み込むようにタップ加工された前記第３の厚板がボルト固定されて前記リング状の中心から半径方向の外側に向かって順次前記第３の厚板、前記第１の厚板、前記第３の曲げ部が配置され、前記第４の曲げ部の前記２つの支持点には、前記第２の厚板の前記２つの支持点を挟み込むようにタップ加工された前記第４の厚板がボルト固定されて前記リング状の中心から半径方向の外側に向かって順次第４の厚板、前記第２の厚板、前記第４の曲げ部が配置され、前記第１の厚板および前記第２の厚板の前記屈曲形状のうち前記薄板の面内の部分には、さらに、前記検出対象にボルト固定されるリングとの締結穴が配設されることを特徴とする。
The present invention relates to a position detector coupling for connecting a fixed part to be detected and a fixed part of a position detector, comprising a formed ring-shaped thin plate and first and second thick plates. and tapped third and fourth thick plates, said thin plates having first and second bends arranged in pairs at opposing positions about said ring center. A third bent portion and a fourth bent portion are provided as a pair at positions facing the center, and the first bent portion and the second bent portion each have a circumferential two supporting points are arranged tangentially spaced apart from each other, and two supporting points are arranged tangentially apart from each other at the third bending portion and the fourth bending portion, respectively. and the two support points of the first bent portion and the second bent portion are fastened to the fixed portion of the position detector, and the first thick plate and the second thick plate are: It has a bent shape that is bent in a direction perpendicular to the surface of the thin plate, and two support points are arranged at intervals in the tangential direction of the circumference at the bent portion in the direction perpendicular to the surface of the thin plate, The third thick plate, which is tapped so as to sandwich the two supporting points of the first thick plate, is bolted to the two supporting points of the third bent portion to form the ring shape. The third thick plate, the first thick plate, and the third bent portion are sequentially arranged radially outward from the center, and the two supporting points of the fourth bent portion are provided with the The fourth thick plate tapped so as to sandwich the two supporting points of the second thick plate is fixed with bolts so that the fourth thick plate is sequentially radially outward from the center of the ring shape; The second thick plate and the fourth bent portion are arranged , and the portion of the bent shape of the first thick plate and the second thick plate that is in the plane of the thin plate further includes the detection A fastening hole for a ring bolted to the object is provided.
本発明の１つの実施形態では、前記第３の厚板および前記第４の厚板は、薄板、第１の厚板、第２の厚板に比べて厚く設定される。 In one embodiment of the present invention, the third thick plate and the fourth thick plate are thicker than the thin plate, the first thick plate, and the second thick plate.
本発明の他の実施形態では、前記第１の厚板および前記第２の厚板は前記薄板に対して厚く設定される。 In another embodiment of the invention, the first thick plate and the second thick plate are thicker than the thin plate.
本発明のさらに他の実施形態では、前記第３の曲げ部および前記第４の曲げ部それぞれの前記２つの支持点は、前記第１の厚板および前記第２の厚板それぞれの前記２つの支持点よりも外側に配置される。 In yet another embodiment of the present invention, the two support points of each of the third bend and the fourth bend are located between the two support points of each of the first plank and the second plank. It is placed outside the support point.
本発明によれば、ボルト周辺部の外形寸法を小型化して狭小スペースにおいても干渉を避けることができる。また、高コストな加工を要する従来の部品、具体的には図３に示す従来のカップリングにおけるブロック９００，１００に相当する部品を第１～第４の厚板に置き換えることができ、コストダウンできる。加えて、第３の曲げ部と第１の厚板および第２の厚板、第４の曲げ部と第１の厚板および第２の厚板とをボルト固定する際に、外側から工具で締め付けることができるため、作業性が改善する。さらに、限られた寸法の中で第３の曲げ部と第４の曲げ部をより半径方向の外側へ配置することができ、薄板の面内で直交する２軸をｘ軸およびｙ軸とし、これらに直交する軸をｚ軸とした場合に、ｚ軸周りの回転力に対して支える腕の長さを長くすることができるため、より高い剛性が得られ、また、ｚ軸方向の変位に対しても支える腕の長さが長くなることで、より弾性的に支持し得る。 According to the present invention, interference can be avoided even in a narrow space by miniaturizing the external dimensions of the bolt periphery. In addition, conventional parts requiring high-cost processing, specifically parts corresponding to blocks 900 and 100 in the conventional coupling shown in FIG. can. In addition, when bolting the third bend to the first and second planks and the fourth bend to the first and second planks, a tool is used from the outside. Since it can be tightened, workability is improved. Furthermore, the third bent portion and the fourth bent portion can be arranged further outward in the radial direction within the limited dimensions, and the two orthogonal axes in the plane of the thin plate are the x-axis and the y-axis, If the axis orthogonal to these is the z-axis, the length of the arm that supports the rotational force around the z-axis can be increased, so higher rigidity can be obtained, and displacement in the z-axis direction can be suppressed. By increasing the length of the supporting arm, it can be supported more elastically.
本実施形態に係る位置検出器用カップリングの全体図を図１に、その一部詳細図を図２に示す。 An overall view of the position detector coupling according to the present embodiment is shown in FIG. 1, and a partially detailed view thereof is shown in FIG.
まず、図１をもとに、位置検出器用カップリングの構成を説明する。 First, based on FIG. 1, the configuration of the position detector coupling will be described.
本実施形態による位置検出器用カップリングは、成形加工された薄板１０と厚板５０，６０と２箇所タップ加工された厚板７０，８０を備えて構成される。薄板１０はリング状であり、その面内において直交する２軸をｘ軸およびｙ軸、これらに直交する軸をｚ軸とした場合に、ｚ軸方向に曲げ部１１，３１および２１，４１が形成される。曲げ部１１，３１は、リング状の中心に対して対向する位置に対をなすように形成され、それぞれ第１の曲げ部および第２の曲げ部として機能する。また、曲げ部２１，４１は、リング状の中心に対して対向する位置に対をなすように形成され、それぞれ第３の曲げ部および第４の曲げ部として機能する。曲げ部１１，３１の配置位置と、曲げ部２１，４１の配置位置は、略９０度をなすように配置される。 The position detector coupling according to the present embodiment comprises a molded thin plate 10, thick plates 50 and 60, and thick plates 70 and 80 tapped at two locations. The thin plate 10 is ring-shaped, and when the x-axis and the y-axis are two axes perpendicular to each other in its plane, and the z-axis is an axis perpendicular to these axes, bent portions 11, 31 and 21, 41 are formed in the z-axis direction. It is formed. The bent portions 11 and 31 are formed in a pair so as to face each other with respect to the center of the ring shape, and function as a first bent portion and a second bent portion, respectively. The bent portions 21 and 41 are formed in pairs at positions facing each other with respect to the center of the ring shape, and function as a third bent portion and a fourth bent portion, respectively. The arrangement positions of the bent portions 11 and 31 and the arranged positions of the bent portions 21 and 41 are arranged so as to form an angle of approximately 90 degrees.
曲げ部１１には周の接線方向に間隔をおいて２つの支持点１２，１３が形成され、曲げ部３１にも周の接線方向に間隔をおいて２つの支持点３２，３３が形成される。曲げ部１１の支持点１２，１３と、曲げ部３１の支持点３２，３３は、それぞれ位置検出器の固定部にボルト固定される。 Two support points 12 and 13 are formed on the bent portion 11 at intervals in the tangential direction of the circumference, and two support points 32 and 33 are also formed on the bent portion 31 at intervals in the tangential direction of the circumference. . The support points 12 and 13 of the bent portion 11 and the support points 32 and 33 of the bent portion 31 are bolted to the fixed portion of the position detector, respectively.
曲げ部２１には周の接線方向に間隔をおいて２つの支持点２２，２３が形成され、曲げ部４１にも周の接線方向に間隔をおいて２つの支持点４２，４３が形成される。 Two support points 22 and 23 are formed on the bent portion 21 at intervals in the tangential direction of the circumference, and two support points 42 and 43 are formed on the bent portion 41 at intervals in the tangential direction of the circumference. .
厚板５０はｚ軸方向に屈曲した屈曲形状をなし、ｚ軸方向に屈曲した部分に間隔をおいて２つの支持点５２，５３が形成され、厚板６０もｚ軸方向に屈曲した屈曲形状をなし、ｚ軸方向に屈曲した部分に間隔をおいて２つの支持点６２，６３が形成される。厚板５０は第１の厚板として機能し、厚板６０は第２の厚板として機能する。 The thick plate 50 has a bent shape bent in the z-axis direction, and two supporting points 52 and 53 are formed at the bent portion in the z-axis direction with an interval therebetween, and the thick plate 60 also has a bent shape bent in the z-axis direction. , and two support points 62 and 63 are formed at intervals in the portion bent in the z-axis direction. Plank 50 functions as a first plank and plank 60 functions as a second plank.
また、厚板７０、８０は、既述したように２箇所においてタップ加工されており、厚板７０は第３の厚板として機能し、厚板８０は第４の厚板として機能する。 The thick plates 70 and 80 are tapped at two locations as described above, with the thick plate 70 functioning as a third thick plate and the thick plate 80 functioning as a fourth thick plate.
曲げ部２１の支持点２２，２３は、厚板５０の支持点５２，５３を挟むように厚板７０のタップ加工を用いて厚板７０にボルト固定される。また、曲げ部４１の支持点４２，４３は、厚板６０の支持点６２，６３を挟むように厚板８０のタップ加工を用いて厚板８０にボルト固定される。すなわち、曲げ部２１に関しては、リンク状の中心から半径方向の外側に向かって順次、厚板７０、厚板５０、曲げ部２１が配置され、曲げ部４１に関しては、リング状の中心から半径方向の外側に向かって順次、厚板８０、厚板６０、曲げ部４１が配置される。 The support points 22 and 23 of the bent portion 21 are bolted to the thick plate 70 by tapping the thick plate 70 so as to sandwich the support points 52 and 53 of the thick plate 50 . Further, the support points 42 and 43 of the bent portion 41 are bolted to the thick plate 80 by tapping the thick plate 80 so as to sandwich the support points 62 and 63 of the thick plate 60 . That is, with respect to the bent portion 21, the thick plate 70, the thick plate 50, and the bent portion 21 are arranged in order radially outward from the center of the link shape. A thick plate 80, a thick plate 60, and a bent portion 41 are arranged in order toward the outside of the .
屈曲形状の厚板５０のｘ－ｙ平面内の部位には締結穴５１が形成され、同様に厚板６０のｘ－ｙ平面内の部位には締結穴６１が形成される。厚板５０は、位置検出器の検出対象の固定部側のリング９０に締結穴５１でボルト固定される。また、厚板６０は、リング９０に締結穴６１でボルト固定される。すなわち、カップリングの厚板５０，６０を検出対象の固定部のリング９０にボルト固定し、カップリングの曲げ部１１，３１を位置検出器の固定部にボルト固定することで、検出対象の固定部と位置検出器の固定部とを結合する。 A fastening hole 51 is formed in a portion of the curved thick plate 50 in the xy plane, and similarly, a fastening hole 61 is formed in a portion of the thick plate 60 in the xy plane. The thick plate 50 is bolted through a fastening hole 51 to the ring 90 on the side of the fixed portion to be detected by the position detector. The thick plate 60 is bolted to the ring 90 through fastening holes 61 . That is, by bolting the thick plates 50 and 60 of the coupling to the ring 90 of the fixed portion to be detected and by bolting the bent portions 11 and 31 of the coupling to the fixed portion of the position detector, the fixed portion of the detection target is fixed. and the fixed part of the position detector.
本実施形態のカップリングでは、ｚ軸周りの回転力が働いた場合に曲げ部１１と３１、曲げ部２１と４１のそれぞれの支持点１２，１３，３２，３３，２２，２３，４２，４３は、曲げ部１１と３１、曲げ部２１と４１を主に板の圧縮、または、引張り方向の力で支えるため、高い剛性が得られる。 In the coupling of this embodiment, when a rotational force around the z-axis acts, the supporting points 12, 13, 32, 33, 22, 23, 42, 43 of the bent portions 11 and 31 and the bent portions 21 and 41 respectively , the bent portions 11 and 31 and the bent portions 21 and 41 are supported mainly by force in the compression or tension direction of the plate, so high rigidity can be obtained.
また、曲げ部１１と３１、曲げ部２１と４１に対して、支持点１２，１３，３２，３３，２２，２３，４２，４３が間隔を置いて配置されることにより、ｘ方向の変位に対して、曲げ部１１と３１は支持点１２，１３，３２，３３に対して板厚方向に変位し、ｙ方向の変位に対して、曲げ部２１と４１は支持点２２，２３，４２，４３に対して板厚方向に変位することになるため、それぞれ弾性的に支持される。 In addition, since the support points 12, 13, 32, 33, 22, 23, 42, and 43 are arranged at intervals with respect to the bent portions 11 and 31 and the bent portions 21 and 41, displacement in the x direction is reduced. On the other hand, the bent portions 11 and 31 are displaced in the plate thickness direction with respect to the support points 12, 13, 32 and 33, and the bent portions 21 and 41 are displaced in the y direction with respect to the support points 22, 23, 42, Since they are displaced in the plate thickness direction with respect to 43, they are supported elastically.
また、曲げ部１１と３１、曲げ部２１と４１が間隔を置いて配置されることにより、ｚ方向の変位に対して、曲げ部１１と３１は、曲げ部２１と４１に対して板厚方向に変位することになるため、弾性的に支持される。 In addition, by arranging the bent portions 11 and 31 and the bent portions 21 and 41 with a gap therebetween, the bent portions 11 and 31 are arranged with a gap in the plate thickness direction relative to the bent portions 21 and 41 with respect to displacement in the z direction. is elastically supported.
さらに、図２のように厚板６０の支持点６２，６３を曲げ部４１の両脇に差し込むように通し、曲げ部４１の支持点４２，４３と厚板８０で挟み込んでボルトで固定するような構造にし、その対角側である厚板５０、曲げ部２１、および厚板７０についても同様の構造にすることで、限られた寸法の中で曲げ部４１，２１をより半径方向に外側へ配置することができ、ｚ軸周りの回転力に対して支える腕の長さを長くすることができるため、より高い剛性が得られ、また、ｚ方向の変位に対しても支える腕の長さが長くなることで、より弾性的に支持することができる。 Further, as shown in FIG. 2, the support points 62 and 63 of the thick plate 60 are inserted into both sides of the bent portion 41, and the support points 42 and 43 of the bent portion 41 and the thick plate 80 are sandwiched and fixed with bolts. The thick plate 50, the bent portion 21, and the thick plate 70, which are diagonally opposite to the thick plate 50, have similar structures. Since the length of the arm that supports against the rotational force around the z-axis can be increased, higher rigidity can be obtained, and the length of the arm that supports against displacement in the z-direction can be obtained. By increasing the length, it is possible to support more elastically.
ここで、２カ所タップ加工された厚板７０，８０は、位置検出器にｚ軸周りの回転力が加わった際に薄板１０と厚板５０，６０の各支持点２２と５２、２３と５３、４２と６２、４３と６３が曲げ部２１，４１を支点にして＋ｙ方向、－ｙ方向に捻じれるように倒れる変位を抑えるように、薄板１０、厚板５０，６０に比べて十分厚く、各厚板に２カ所ずつタップ加工されており、厚板１個で捻じれるように倒れる２つの支点の組をボルトで固定できる。 Here, the thick plates 70 and 80, which are tapped at two locations, are held at the support points 22 and 52 and 23 and 53 of the thin plate 10 and the thick plates 50 and 60 when a rotational force around the z-axis is applied to the position detector. , 42 and 62, and 43 and 63 are sufficiently thicker than the thin plate 10 and the thick plates 50 and 60 so as to suppress the displacement of the bent portions 21 and 41 as fulcrums to be twisted in the +y direction and the -y direction, Each thick plate is tapped in two places, and a set of two fulcrums can be fixed with bolts so that a single thick plate can be twisted and tilted.
また、厚板５０，６０は、位置検出器にｚ軸周りの回転力が加わった際に薄板１０と厚板５０，６０の各支持点２２と５２、２３と５３、４２と６２、４３と６３が締結穴５１，６１を支点にｙ軸周りに回転する変位を抑えるように、薄板１０に対して十分厚く設定される。 Further, the thick plates 50 and 60 are arranged such that the support points 22 and 52, 23 and 53, 42 and 62, and 43 of the thin plate 10 and the thick plates 50 and 60, respectively, when a rotational force around the z-axis is applied to the position detector. It is set thick enough with respect to the thin plate 10 so that the displacement of the 63 rotating about the y-axis with the fastening holes 51 and 61 as a fulcrum is suppressed.
本実施形態のカップリングによれば、検出対象の固定部と位置検出器の固定部とを軸方向と半径方向に弾性的で、かつ捩じり剛性の高い結合を得ることができる。 According to the coupling of the present embodiment, it is possible to obtain a coupling that is elastic in the axial and radial directions and has high torsional rigidity between the fixed portion to be detected and the fixed portion of the position detector.
１０ 薄板、１１，２１，３１，４１，１１０，２１０，３１０，４１０ 曲げ部、５０，６０ 厚板、７０，８０ タップ加工された厚板、９０ リング、１００，９００ ブロック、５１，６１ 締結穴、９１，９２，５００，６００，７００，８００ 穴、１２，１３，２２，２３，３２，３３，４２，４３，５２，５３，６２，６３，１２０，１３０，２２０，２３０，３２０，３３０，４２０，４３０ 支持点。 10 thin plate, 11, 21, 31, 41, 110, 210, 310, 410 bend, 50, 60 thick plate, 70, 80 tapped thick plate, 90 ring, 100, 900 block, 51, 61 fastening hole , 91,92,500,600,700,800 holes, 12,13,22,23,32,33,42,43,52,53,62,63,120,130,220,230,320,330, 420, 430 support points.
Claims (4)
成形加工されたリング状の薄板と、
第１および第２の厚板と、
タップ加工された第３および第４の厚板と、
を備え、
前記薄板は、前記リング状の中心に対して互いに対向する位置に第１の曲げ部および第２の曲げ部が対として配設されるとともに、前記中心に対して対向する位置に第３の曲げ部および第４の曲げ部が対として配設され、
前記第１の曲げ部および前記第２の曲げ部には、それぞれ周の接線方向に間隔を置いて２つの支持点が配設され、前記第３の曲げ部および前記第４の曲げ部には、それぞれ周の接線方向に間隔をおいて２つの支持点が配設され、
前記第１の曲げ部および前記第２の曲げ部それぞれの前記２つの支持点は、前記位置検出器の固定部と締結され、
前記第１の厚板及び前記第２の厚板は、前記薄板の面に直交する方向に屈曲した屈曲形状をなし、前記薄板の面に直交する方向に屈曲した部分には、それぞれ周の接線方向に間隔を置いて２つの支持点が配設され、
前記第３の曲げ部の前記２つの支持点には、前記第１の厚板の前記２つの支持点を挟み込むようにタップ加工された前記第３の厚板がボルト固定されて前記リング状の中心から半径方向の外側に向かって順次前記第３の厚板、前記第１の厚板、前記第３の曲げ部が配置され、前記第４の曲げ部の前記２つの支持点には、前記第２の厚板の前記２つの支持点を挟み込むようにタップ加工された前記第４の厚板がボルト固定されて前記リング状の中心から半径方向の外側に向かって順次第４の厚板、前記第２の厚板、前記第４の曲げ部が配置され、
前記第１の厚板および前記第２の厚板の前記屈曲形状のうち前記薄板の面内の部分には、さらに、前記検出対象にボルト固定されるリングとの締結穴が配設される
ことを特徴とする位置検出器用カップリング。 A position detector coupling for coupling a fixed part to be detected and a fixed part of a position detector,
a molded ring-shaped thin plate;
first and second planks;
tapped third and fourth planks;
with
The thin plate has a pair of first bent portions and second bent portions at positions facing each other with respect to the center of the ring shape, and a third bent portion at positions facing each other with respect to the center. the section and the fourth bending section are arranged as a pair;
Two support points are provided on the first bend and the second bend, respectively, spaced apart in the tangential direction of the circumference, and the third bend and the fourth bend are provided with two support points. , each having two supporting points spaced apart tangentially around the circumference,
The two support points of each of the first bent portion and the second bent portion are fastened to a fixed portion of the position detector,
The first thick plate and the second thick plate have a bent shape bent in a direction perpendicular to the surface of the thin plate, and the portions bent in the direction perpendicular to the surface of the thin plate each have a tangent to the circumference. two supporting points spaced apart in the direction,
The third thick plate, which is tapped so as to sandwich the two supporting points of the first thick plate, is bolted to the two supporting points of the third bent portion to form the ring shape. The third thick plate, the first thick plate, and the third bent portion are sequentially arranged radially outward from the center, and the two support points of the fourth bent portion are provided with the The fourth thick plate tapped so as to sandwich the two support points of the second thick plate is fixed with bolts , and the fourth thick plate is sequentially radially outward from the center of the ring shape; The second thick plate and the fourth bent portion are arranged ,
In the bent shape of the first thick plate and the second thick plate, the in-plane portion of the thin plate is further provided with a fastening hole for a ring that is bolted to the object to be detected. A position detector coupling characterized by:
前記第３の厚板および前記第４の厚板は、薄板、第１の厚板、第２の厚板に比べて厚く設定される
ことを特徴とする位置検出器用カップリング。 The position detector coupling according to claim 1,
The position detector coupling, wherein the third thick plate and the fourth thick plate are thicker than the thin plate, the first thick plate, and the second thick plate.
前記第１の厚板および前記第２の厚板は前記薄板に対して厚く設定される
ことを特徴とする位置検出器用カップリング。 The position detector coupling according to claim 1 or 2,
The position detector coupling, wherein the first thick plate and the second thick plate are thicker than the thin plate.
前記第３の曲げ部および前記第４の曲げ部それぞれの前記２つの支持点は、前記第１の厚板および前記第２の厚板それぞれの前記２つの支持点よりも外側に配置される
ことを特徴とする位置検出器用カップリング。 The position detector coupling according to any one of claims 1 to 3,
The two support points of each of the third bent portion and the fourth bent portion are arranged outside the two support points of each of the first thick plate and the second thick plate. A position detector coupling characterized by:
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| JP2019110849A JP7328800B2 (en) | 2019-06-14 | 2019-06-14 | Coupling for position detector |
| DE102020114814.3A DE102020114814A1 (en) | 2019-06-14 | 2020-06-04 | Coupling for position detector |
| CN202010538097.7A CN112087107A (en) | 2019-06-14 | 2020-06-12 | Connector of position detector |
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| JP2003503669A (en) | 1999-07-01 | 2003-01-28 | ドクトル・ヨハネス・ハイデンハイン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Use of this joint in joints and angle measuring devices |
| US6826839B2 (en) | 2001-01-23 | 2004-12-07 | Dr. Johannes Heidenhain Gmbh | Angle measuring system |
| JP2016226090A (en) | 2015-05-27 | 2016-12-28 | オークマ株式会社 | Motor with built-in encoder |
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| JPH0711875U (en) * | 1993-07-09 | 1995-02-21 | 株式会社安川電機 | Servo motor with rotation detector |
| JPH08284971A (en) * | 1995-04-14 | 1996-11-01 | Ishikawajima Harima Heavy Ind Co Ltd | Leaf spring for rotary encoder |
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| JP2003503669A (en) | 1999-07-01 | 2003-01-28 | ドクトル・ヨハネス・ハイデンハイン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Use of this joint in joints and angle measuring devices |
| US6826839B2 (en) | 2001-01-23 | 2004-12-07 | Dr. Johannes Heidenhain Gmbh | Angle measuring system |
| JP2016226090A (en) | 2015-05-27 | 2016-12-28 | オークマ株式会社 | Motor with built-in encoder |
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