WO2013065180A1 - Moteur linéaire cylindrique - Google Patents

Moteur linéaire cylindrique Download PDF

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Publication number
WO2013065180A1
WO2013065180A1 PCT/JP2011/075469 JP2011075469W WO2013065180A1 WO 2013065180 A1 WO2013065180 A1 WO 2013065180A1 JP 2011075469 W JP2011075469 W JP 2011075469W WO 2013065180 A1 WO2013065180 A1 WO 2013065180A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
linear motor
cylindrical
frame
axial direction
Prior art date
Application number
PCT/JP2011/075469
Other languages
English (en)
Japanese (ja)
Inventor
陽介 高石
治之 長谷川
徹 片江
Original Assignee
三菱電機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2011/075469 priority Critical patent/WO2013065180A1/fr
Priority to JP2012517967A priority patent/JP5042397B1/ja
Priority to TW101115744A priority patent/TW201320560A/zh
Publication of WO2013065180A1 publication Critical patent/WO2013065180A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2207/00—Specific aspects not provided for in the other groups of this subclass relating to arrangements for handling mechanical energy
    • H02K2207/03—Tubular motors, i.e. rotary motors mounted inside a tube, e.g. for blinds
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes

Definitions

  • the present invention relates to a cylindrical linear motor.
  • the cylindrical linear motor includes an armature portion as a stator in which a plurality of U-phase, V-phase, and W-phase ring coils are arranged in an axial direction in a cylindrical yoke made of a magnetic material, and the armature A field part as a mover arranged in the axial direction with a plurality of permanent magnets arranged in a shaft direction through a plate-like spacer made of a magnetic material, with N poles and S poles facing each other, And a bearing portion such as a linear bush or a ball bush that is provided at both end portions of the armature portion and supports the shaft so as to be movable in the axial direction.
  • armature portion as a stator in which a plurality of U-phase, V-phase, and W-phase ring coils are arranged in an axial direction in a cylindrical yoke made of a magnetic material
  • the armature A field part as a mover arranged in the axial direction with a plurality of permanent
  • the movable part of the linear motor is attached to two parts of the front and rear mounting parts to collide and absorbs the impact force caused by the collision of the movable part of the linear motor.
  • a buffer member made of spring or urethane cushion to Gensa, with an injection molding machine is disclosed (for example, see Patent Document 1).
  • the linear motor includes a fixed portion and a movable portion, and the fixed portion includes a case that also serves as a yoke, a plurality of salient pole type iron cores that are attached to the upper and lower inner wall surfaces of the case in the axial direction, and the iron core
  • the movable part consists of a winding wound around each, the movable part is composed of a yoke, a plurality of permanent magnets mounted on both sides of the yoke, and an output shaft that transmits the movement of the movable part in the axial direction to the outside.
  • Two shock absorbers made of rubber and other elastic bodies that absorb the kinetic energy when the movable part hits are provided at two locations on the axial end face of the case.
  • a linear motor in which members are arranged is disclosed (for example, see Patent Document 2).
  • the stator is movably supported via the rolling member, and is disposed between the left and right inner surfaces of the stator and the left and right outer surfaces of the stator.
  • the guide member that contacts one inner surface side of the stator is formed such that the rotation radius of the portion that contacts the mover and the stator is equal
  • the other guide member is formed so that the rotation radii of the portions contacting the mover and the stator are different from each other, and when the mover moves relative to the stator, a linear motor that generates a friction braking force by sliding friction A braking mechanism is disclosed (see, for example, Patent Document 3).
  • JP 2002-355868 A Japanese Patent Application Laid-Open No. 07-232642 (3rd and 4th pages, FIG. 1) Japanese Patent Laid-Open No. 62-193551
  • the present invention has been made in view of the above, and an object of the present invention is to obtain a cylindrical linear motor that has a small number of parts and is low in cost and that does not act on a movable element during driving and braking. .
  • the present invention includes a cylindrical frame, a cylindrical yoke made of a magnetic material fitted in the frame, and an axial arrangement in the yoke.
  • a plurality of ring-shaped coils, a bearing holder fixed to both ends of the frame, and a bearing held by the bearing holder; and an armature portion inserted into the armature portion, and a plurality of permanent coils A field having a large-diameter intermediate portion in which magnets are arranged in the axial direction and a small-diameter shaft portion extending from the large-diameter intermediate portion to both sides in the axial direction and inserted into the bearing, and formed in a stepped shaft shape And a friction member that is held by the bearing holder and through which the small-diameter shaft portion is inserted, and that generates a static friction force between the small-diameter shaft portion.
  • the cylindrical linear motor according to the present invention has an effect that the number of parts is small and the cost is low, and the bending force does not act on the field part (mover) during driving and braking.
  • FIG. 1 is a longitudinal sectional view showing Embodiment 1 of a cylindrical linear motor according to the present invention.
  • FIG. 2 is an enlarged view of part A in FIG.
  • FIG. 3 shows the necessary effectiveness necessary for reciprocating the mover when the weight of the mover (free fall load) is in the range of 0 kgf to 0.20 kgf when the cylindrical linear motor of Embodiment 1 is installed vertically. It is a figure which shows the calculated value of thrust.
  • FIG. 4 shows a reciprocating drive of the mover when the cylindrical linear motor of the first embodiment is installed vertically, the mover weight is 0.05 kgf (0.49 N), and the static friction force is changed from 0 N to 2 N. It is a figure which shows the calculated value of required effective thrust required for performing.
  • FIG. 5 is a partially enlarged longitudinal sectional view showing Embodiment 2 of the cylindrical linear motor according to the present invention.
  • FIG. 1 is a longitudinal sectional view showing a first embodiment of a cylindrical linear motor according to the present invention
  • FIG. 2 is an enlarged view of a portion A in FIG.
  • the cylindrical linear motor 91 includes a cylindrical armature portion 10 serving as a stator, and the armature portion 10 is inserted coaxially with the armature portion 10. And a field portion 20 having an intermediate portion formed in a stepped shaft shape having a large diameter.
  • the armature portion 10 is a cylindrical frame 11 made of a non-magnetic material such as aluminum or resin, a cylindrical yoke 12 made of a magnetic metal fitted in the frame 11, and an axial arrangement in the yoke 12.
  • a cylindrical bobbin 15 around which W-phase coils 13u, 13v, and 13w are wound (the ring-shaped insulating plate 14 and the bobbin 15 may be integrally formed of resin), and a bearing fixed to both ends of the frame 11.
  • a holder 16 and a bearing 17 such as a linear bush or a ball bush held by the bearing holder 16 are provided.
  • the field portion 20 includes a pipe 21 made of a nonmagnetic material such as stainless steel (SUS304) or aluminum that transmits magnetic flux, and a plurality of thick plate or columnar permanent magnets 22 arranged in the pipe 21 in the axial direction. And a magnetic metal spacer 23 inserted between adjacent permanent magnets 22.
  • the permanent magnet 22 is disposed so that the N poles and the S poles face each other with the spacer 23 interposed therebetween.
  • the large diameter portion 24a of the stepped shaft 24 is fitted into both ends of the pipe 21, and the small diameter shaft portion 24b of the stepped shaft 24 extends from the pipe (large diameter intermediate portion) 21 to both sides in the axial direction.
  • the field portion 20 as a mover is formed in a stepped shaft shape having a thick central portion as a whole by fitting the large diameter portion 24a of the stepped shaft 24 to both ends of the pipe 21.
  • the small diameter shaft portion 24b of the stepped shaft 24 is supported by the bearings 17 at both ends of the armature portion 10 so as to be linearly movable in the axial direction.
  • the cylindrical linear motor 91 detects the position of the magnetic pole of the field part (movable element) 20 by a magnetic sensor (Hall element) provided in the armature part (stator) 10 or uses a linear encoder to detect the field.
  • the moving position of the unit 20 is detected, and based on the detected position information, the energization to the U, V, and W phase coils 13u, 13v, and 13w is switched, and the field unit 20 is moved along the armature unit 10 in the axial direction. Drive linearly.
  • An oil seal or dust seal 19 as a friction member through which the small diameter shaft portion 24b is inserted is held at the outer end portion of the bearing holder 16.
  • the oil seal or dust seal 19 seals oil or dust and applies a static friction force to the small diameter shaft portion 24b.
  • the field portion 20 tends to drop due to gravity, but is held by the static frictional force of the oil seal or dust seal 19 and can be prevented from being damaged due to free fall.
  • FIG. 3 shows that when the cylindrical linear motor according to the first embodiment is installed vertically, the mover is reciprocally driven when the weight of the mover (field portion 20) (free fall load) is in the range of 0 kgf to 0.20 kgf. It is a figure which shows the calculated value of required effective thrust required for this. As shown in FIG. 3, when the weight of the mover is 0 kgf, the required effective thrust is greater when the static frictional force of the friction member (oil seal or dust seal) 19 is 2N than when it is 1N. However, if the weight of the mover exceeds 0.14 kgf, the required effective thrust becomes smaller when the static friction force is 2N than when it is 1N. This is because the loss can be reduced by supporting the free fall load by the static friction force.
  • FIG. 4 shows a movable element (field) when the cylindrical linear motor 91 according to the first embodiment is installed vertically, the weight of the movable element is 0.05 kgf (0.49 N), and the static friction force is changed from 0 N to 2 N. It is a figure which shows the calculated value of required effective thrust required in order to reciprocately drive the magnetic part 20). As shown in FIG. 4, when the static frictional force of the friction member 19 is around 0.9 N, the required effective thrust is minimized and the efficiency is increased.
  • a cylindrical linear motor is generated by generating a static frictional force between the mover and the stator that is about 1 to 3 times the weight of the mover (0.49N to 1.47N).
  • the required effective thrust of the 91 reciprocating drive can be reduced, and the drive can be performed more efficiently.
  • the same effect as described above can be obtained when the cylindrical linear motor 91 is tilted instead of vertically.
  • a static frictional force of about 1 to 3 times the sum of the weight of the mover and the weight of the load is applied to the mover and the stator. Try to generate in between.
  • the cylindrical linear motor 91 is held by the bearing holder 16 through which the small diameter shaft portion 24b is inserted, and a friction member (oil seal or dust seal) 19 that generates a static friction force between the small diameter shaft portion 24b. Therefore, the number of parts is small and the bending force does not act on the small-diameter shaft portion 24b (field portion 20). Moreover, since the oil seal or the dust seal 19 is provided, the armature part 10 can be sealed.
  • FIG. FIG. 5 is a partially enlarged longitudinal sectional view showing Embodiment 2 of the cylindrical linear motor according to the present invention.
  • the cylindrical linear motor 92 according to the second embodiment is movable between the small diameter shaft portion 24b instead of the bearing 17 and the friction member 19 of the cylindrical linear motor 91 according to the first embodiment.
  • a sliding bearing 17a that generates a static friction force that is greater than the weight of the child (field portion 20) and less than three times the weight of the mover is used.
  • cylindrical linear motor 92 of the second embodiment it is possible to reduce the necessary effective thrust of the reciprocating drive in an inclined installation or a vertical installation state other than the horizontal installation, and it is possible to drive more efficiently.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)

Abstract

La présente invention concerne un moteur linéaire, comprenant : une unité d'induit (10) dotée d'une carcasse cylindrique (11), une culasse cylindrique (12) constituée d'un corps magnétique adapté dans la carcasse (11), une pluralité de bobines de forme annulaire (13u, 13v, 13w) disposées au sein de la culasse (12) dans le sens axial, un support de palier (16) fixé aux deux extrémités de la carcasse (11) et un palier (17) supporté par le support de palier (16). Ledit moteur comprend en outre un élément de champ (20) en forme d'arbre à épaulements et présentant une partie intermédiaire de grand diamètre insérée dans l'unité d'induit (10) et comprenant une pluralité d'aimants permanents (22) disposés dans le sens axial, et une partie d'arbre de petit diamètre (24b) qui s'étend des deux côtés dans le sens axial à partir de la partie intermédiaire de grand diamètre et qui est insérée dans le palier (17). Ledit moteur comprend enfin un élément de frottement (19) pour générer une force de frottement statique contre la partie d'arbre de petit diamètre (24b), ledit élément de frottement étant supporté par le support de palier (17) et ladite partie d'arbre de petit diamètre (24b) étant insérée dans celui-ci.
PCT/JP2011/075469 2011-11-04 2011-11-04 Moteur linéaire cylindrique WO2013065180A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2011/075469 WO2013065180A1 (fr) 2011-11-04 2011-11-04 Moteur linéaire cylindrique
JP2012517967A JP5042397B1 (ja) 2011-11-04 2011-11-04 筒型リニアモータ
TW101115744A TW201320560A (zh) 2011-11-04 2012-05-03 筒型線性馬達

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/075469 WO2013065180A1 (fr) 2011-11-04 2011-11-04 Moteur linéaire cylindrique

Publications (1)

Publication Number Publication Date
WO2013065180A1 true WO2013065180A1 (fr) 2013-05-10

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PCT/JP2011/075469 WO2013065180A1 (fr) 2011-11-04 2011-11-04 Moteur linéaire cylindrique

Country Status (3)

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JP (1) JP5042397B1 (fr)
TW (1) TW201320560A (fr)
WO (1) WO2013065180A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6458334B1 (ja) * 2018-02-02 2019-01-30 株式会社東京精密 リニア駆動機構及び形状測定機
CN112217367A (zh) * 2019-07-09 2021-01-12 大族激光科技产业集团股份有限公司 一种组合式直线电机端盖

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6166926B2 (ja) * 2013-03-26 2017-07-19 山洋電気株式会社 リニアモータ
WO2015132864A1 (fr) * 2014-03-03 2015-09-11 株式会社安川電機 Moteur linéaire
CN107896020B (zh) * 2017-12-20 2024-04-12 浙江宝龙机电有限公司 一种驱动马达

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07336993A (ja) * 1994-06-08 1995-12-22 Oriental Motor Co Ltd リニアパルスモータ
JP2008245399A (ja) * 2007-03-27 2008-10-09 Mitsubishi Electric Corp シャフト型リニアモータの電機子、シャフト型リニアモータ、及びシャフト型リニアモータの電機子の製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07336993A (ja) * 1994-06-08 1995-12-22 Oriental Motor Co Ltd リニアパルスモータ
JP2008245399A (ja) * 2007-03-27 2008-10-09 Mitsubishi Electric Corp シャフト型リニアモータの電機子、シャフト型リニアモータ、及びシャフト型リニアモータの電機子の製造方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6458334B1 (ja) * 2018-02-02 2019-01-30 株式会社東京精密 リニア駆動機構及び形状測定機
WO2019150681A1 (fr) * 2018-02-02 2019-08-08 株式会社東京精密 Mécanisme d'entraînement linéaire et machine de mesure de forme
JP2019132801A (ja) * 2018-02-02 2019-08-08 株式会社東京精密 リニア駆動機構及び形状測定機
US11025151B2 (en) 2018-02-02 2021-06-01 Tokyo Seimitsu Co., Ltd. Linear drive mechanism and shape measuring machine
CN112217367A (zh) * 2019-07-09 2021-01-12 大族激光科技产业集团股份有限公司 一种组合式直线电机端盖
CN112217367B (zh) * 2019-07-09 2022-07-19 大族激光科技产业集团股份有限公司 一种组合式直线电机端盖

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Publication number Publication date
TW201320560A (zh) 2013-05-16
JP5042397B1 (ja) 2012-10-03
JPWO2013065180A1 (ja) 2015-04-02

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