WO2022056972A1 - Moteur linéaire - Google Patents

Moteur linéaire Download PDF

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Publication number
WO2022056972A1
WO2022056972A1 PCT/CN2020/120630 CN2020120630W WO2022056972A1 WO 2022056972 A1 WO2022056972 A1 WO 2022056972A1 CN 2020120630 W CN2020120630 W CN 2020120630W WO 2022056972 A1 WO2022056972 A1 WO 2022056972A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
linear motor
scale
along
sliding seat
Prior art date
Application number
PCT/CN2020/120630
Other languages
English (en)
Chinese (zh)
Inventor
郭顺
郑高伟
王洪兴
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技（南京）有限公司
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 瑞声声学科技(深圳)有限公司, 瑞声科技（南京）有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022056972A1 publication Critical patent/WO2022056972A1/fr

Links

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
    • 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
    • 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
    • H02K11/22—Optical devices

Definitions

  • the present application relates to the technical field of motors, and in particular, to a linear motor.
  • the linear motor in the prior art generally uses the electromagnetic action between the primary component and the secondary component to output reciprocating motion in the linear direction, and also obtains the position information of the linear motor through the cooperation of the scale and the read head.
  • the linear motor in the prior art generally sets the scale and the read head on one side of the primary assembly and the secondary assembly, which results in that in the width direction of the linear motor (perpendicular to the direction of motion of the linear motor), the ,
  • the position sensing device composed of the reading head and the electromagnetic structure composed of the primary component and the secondary component occupy different width spaces respectively, resulting in a large width of the linear motor, which is not conducive to the miniaturization development trend of the linear motor.
  • the purpose of this application is to provide a linear motor with a smaller width dimension.
  • the linear motor includes:
  • the sliding seat is arranged on the base and is enclosed with the base to form an installation cavity; the sliding seat and the base move relatively along the moving direction;
  • the read head is The head is arranged on one side of the primary assembly along the moving direction and is arranged side by side with the primary assembly, the scale is arranged on the side of the secondary assembly perpendicular to the moving direction, or The read head is arranged on a side of the secondary assembly along the moving direction and is arranged in parallel with the secondary assembly, and the scale is arranged on a side of the primary assembly that is perpendicular to the moving direction .
  • the primary assembly and the secondary assembly are disposed opposite and spaced apart along a first direction perpendicular to the moving direction, and the scale is disposed along the edge of the secondary assembly.
  • One side of the second direction or one side of the primary assembly along the second direction, the second direction is perpendicular to the first direction and the moving direction, the scale and the reading The heads are opposed and spaced apart along the second direction.
  • the base includes a base plate and a side plate extending from the base plate toward the sliding seat, and the sliding seat and the side plate are movably connected.
  • the primary assembly is mounted on the sliding seat
  • the secondary assembly is mounted on the base plate
  • the read head is mounted on the sliding seat and extends along the sliding seat.
  • a projection of the first direction onto the secondary assembly falls at least partially within the secondary assembly
  • the scale is mounted on the substrate and is located on a side of the secondary assembly along the second direction.
  • the primary assembly is mounted on the base plate
  • the secondary assembly is mounted on the sliding seat
  • the read head is mounted on the base plate along the first
  • a projection of one direction onto the secondary assembly falls at least partially within the secondary assembly
  • the scale is mounted on the carriage and is located on a side of the secondary assembly along the second direction.
  • the scale is mounted on the sliding seat or the base plate through a scale mounting bracket, and the read head is mounted on the base plate or the sliding seat through a reading head mounting frame .
  • the primary assembly includes an iron core and windings arranged on the iron core.
  • the iron core includes a bottom wall and a plurality of vertical walls extending from the bottom wall toward the secondary assembly, and a plurality of the vertical walls are arranged at intervals, and in each A coil is wound on the vertical wall, and the coil forms the winding.
  • the secondary assembly includes a magnetic yoke and at least two magnets arranged on the magnetic yoke at intervals along the moving direction.
  • a guide rail is formed at one end of the side plate away from the base plate, and the sliding seat is movably connected to the side plate through the guide rail.
  • the beneficial effect of the present application is that the linear motor in the embodiment of the present application is optimized in terms of structural layout, and in the moving direction of the sliding seat or the base, the reading head is arranged on one side of the primary assembly along the moving direction and Arranged side by side with the primary component, the scale is arranged on the side of the secondary component perpendicular to the moving direction, or the read head is arranged on the side of the secondary component along the moving direction and arranged side by side with the secondary component, the scale is arranged On the side of the primary assembly that is perpendicular to the moving direction, for the linear motor as a whole, at least the read head, the primary assembly and the secondary assembly share a width space in the width direction, thereby reducing the width of the linear motor. , thereby reducing the overall size of the linear motor.
  • FIG. 1 is a schematic structural diagram of a linear motor in an embodiment of the application
  • Fig. 2 is a sectional view along the A-A direction in Fig. 1;
  • FIG. 3 is a schematic structural diagram of a linear motor removing a sliding seat in an embodiment of the application
  • FIG. 4 is a schematic structural diagram of a linear motor in another embodiment of the present application.
  • FIG. 5 is a cross-sectional view taken along the direction B-B in FIG. 4 .
  • the embodiment of the present application provides a linear motor, the linear motor is optimized in the structural layout, and has a smaller width dimension than the traditional linear motor.
  • the linear motor includes a base 100 , a sliding seat 200 , an electromagnetic structure composed of a primary assembly 300 and a secondary assembly 400 , and an electromagnetic structure composed of a scale 500 and a read head 600 . position sensing device.
  • the sliding seat 200 is disposed on the base 100 and is enclosed with the base 100 to form an installation cavity 101; the sliding seat 200 and the base 100 move relatively along the moving direction Y, that is, the base 100 can move along the 200 can move along the moving direction Y, and the moving direction Y can be understood as the motion output direction of the linear motor, and the Y direction shown in FIG. 1 can be referred to here.
  • the electromagnetic structure is used to drive the base 100 or the carriage 200 to move.
  • one of the primary assembly 300 and the secondary assembly 400 is installed on the base 100 and the other is installed on the sliding seat 200 , and the primary assembly 300 is used to generate a traveling wave magnetic field and interact with the secondary assembly 400 To drive the sliding seat 200 or the base 100 to move linearly along the moving direction Y.
  • the position sensing device is used to monitor the moving distance of the carriage 200, so that the position information of the linear motor can be reflected in a timely manner.
  • the scale 500 and the read head 600 are disposed opposite to each other, one of the scale 500 and the read head 600 is mounted on the base 100, and the other is mounted on the slide 200, that is, the scale 500 and the read head One of the 600 moves with the base 100 or the sliding seat 200, and there will be relative movement between the scale 500 and the read head 600, so that the data information on the scale 500 can be read in time through the read head 600, that is, a straight line Position information of the motor.
  • the read head 600 is arranged on the side of the primary assembly 300 along the moving direction Y and is arranged side by side with the primary assembly 300, and the scale 500 is arranged on the side of the secondary assembly 400 that is perpendicular to the moving direction, Or the read head 600 is arranged on the side of the secondary assembly 400 along the moving direction Y and is arranged side by side with the secondary assembly 400 , and the scale 500 is arranged on the side of the primary assembly 300 perpendicular to the moving direction.
  • one side of the moving direction means that there is a front side and a rear side in the moving direction (here is only an example), and the primary assembly 300 and the read head 600 are in the moving direction Arranged along the front and back, in the same way, one side in the direction perpendicular to the moving direction (for example, the X direction in Figure 1) means that there are left and right sides in this direction (this is only an example), the second The stage assembly 400 and the scale 500 are arranged left and right along this direction.
  • Figure 1 shows a space rectangular coordinate system.
  • the Y-axis pointing is the moving direction (that is, the length direction hereinafter), and the aforementioned front and rear positional relationship is defined
  • the Z-axis is pointing to the direction of the
  • the X axis points to the second direction perpendicular to the moving direction (that is, the width direction hereinafter), and defines the aforementioned left-right positional relationship.
  • the moving direction, the first direction and the second direction are two.
  • the primary assembly 300 and the secondary assembly 400 are opposite and spaced apart along a first direction perpendicular to the moving direction, and the scale 500 is disposed on one side of the secondary assembly 400 along the second direction or on the edge of the primary assembly 300.
  • the scale 500 and the read head 600 are arranged opposite and spaced apart along the second direction.
  • the moving direction of the slide 200 is defined as the length direction, and the direction X perpendicular to the length direction is defined as the width direction.
  • the scale 500 is generally designed to be covered with the installation cavity 101 of the linear motor in the length direction. Therefore, for the entire linear motor, it can mainly be saved from its width direction (ie, the X-axis direction). space, it is obvious that the embodiments of the present application achieve this purpose.
  • the read head 600 in the moving direction of the base 100 or the carriage 200, is arranged on one side of the primary assembly 300 along the moving direction and is arranged side by side with the primary assembly 300, and the scale 500 is arranged on the secondary One side of the assembly 400 perpendicular to the moving direction, or the read head 600 is disposed on one side of the secondary assembly 400 along the moving direction and is arranged side by side with the secondary assembly 400, and the scale 500 is disposed on the side of the primary assembly 400 perpendicular to the moving direction One side of the direction, so that for the linear motor as a whole, at least the read head 600, the primary assembly 300 and the secondary assembly 400 will share a width space in the width direction, so that the width dimension of the linear motor can be reduced, thereby reducing the linear motor.
  • the overall size of the motor in the moving direction of the base 100 or the carriage 200.
  • the read head 600, the primary assembly 300 and the secondary assembly 400 share a width space in the width direction, which can provide the primary assembly 300 and/or the secondary assembly 400 with more space. More installation space, which is beneficial to improve the performance of the linear motor and make it have a larger thrust.
  • the base 100 has a guide rail 102
  • the sliding seat 200 is movably disposed on the guide rail 102 .
  • the base 100 includes a base plate 110 and a side plate 120 extending from the base plate 110 toward the sliding seat 200.
  • the sliding seat 200 and the side plate 120 are movably connected, and the base 100 is substantially in the shape of a In the concave-shaped structure, a guide rail 102 is formed at one end of the side plate 120 away from the bottom plate 110 .
  • a groove is formed at one end of the side plate 120 away from the bottom plate 110 .
  • the guide rail 102 can also be formed by other structures between the side plate 120 and the sliding seat 200 , for example, a first connecting member 1021 can be provided in the groove, and at the same time on both sides of the sliding seat 200 A second connecting piece 1022 is provided, and the first connecting piece 1021 can move in the groove. By connecting the second connecting piece 1022 to the first connecting piece 1021, the sliding seat 200 and the base 100 can be moved together. .
  • the side plate 120 is vertically extended from the two sides of the bottom plate 110, and the sliding seat 200 is designed to be A flat plate, at this time, the linear motor is in the shape of a cuboid as a whole.
  • the base 100 and the sliding seat 200 may adopt other structural shapes, and various designs of the movement cooperation between them may also be made.
  • the foregoing linear motor having a rectangular parallelepiped structure will be used as an example for description.
  • the primary assembly 300 is mounted on the carriage 200
  • the secondary assembly 400 is mounted on the base plate 110
  • the read head 600 is mounted on the carriage 200 and extends toward the carriage 200 along the first direction.
  • the projection of the secondary assembly 400 falls at least partially within the secondary assembly 400
  • the scale 500 is mounted on the substrate 110 on one side of the secondary assembly 400 along the second direction.
  • the read head 600 is mounted on the sliding seat 200 and the projection to the secondary assembly 400 along the first direction completely falls within the secondary assembly 400 .
  • the primary assembly 300 and the read head 600 move in a straight line with the carriage 200, while the secondary assembly 400 and the scale 500 remain fixed. Since the read head 600 is arranged in line with the primary assembly 300, The width dimension of the linear motor can be reduced, and the size of the linear motor can be made smaller.
  • the primary assembly 300 is mounted on the carriage 200
  • the secondary assembly 400 is mounted on the substrate 110
  • the read head 600 is mounted on the substrate 110 and at least partially falls in the projection of the primary assembly 300 along the first direction
  • the scale 600 is mounted on the carriage 200 and is located on one side of the primary assembly 300 along the second direction. More preferably, in order to make the linear motor narrower in the width direction, the read head 600 is mounted on the substrate 110 and the projection to the primary assembly 300 along the first direction completely falls within the primary assembly 300 .
  • the second embodiment changes the positional relationship between the scale 500 and the read head 600 .
  • the primary assembly 300 is mounted on the substrate 110
  • the secondary assembly 400 is mounted on the carriage 200
  • the read head 600 is mounted on the substrate 110 along the first direction toward the secondary
  • the projection of the assembly 400 falls completely at least partially within the secondary assembly 400
  • the scale 500 is mounted on the carriage 200 on the side of the secondary assembly 400 in the second direction. More preferably, in order to make the linear motor narrower in the width direction, the projection of the read head 600 mounted on the substrate 110 to the secondary assembly 400 along the first direction completely falls within the secondary assembly 400 ,
  • the third embodiment changes the positional relationship between the primary assembly 300 and the secondary assembly 400 .
  • the primary assembly 300 is mounted on the base plate 110
  • the secondary assembly 400 is mounted on the sliding seat 200
  • the read head 600 is mounted on the sliding seat 200 and at least partially falls in the projection to the primary assembly 300 along the first direction
  • the scale 500 is mounted on the substrate 110 and is located on one side of the primary assembly 300 along the second direction. More preferably, in order to make the linear motor narrower in the width direction, the projection of the read head 600 mounted on the carriage 200 to the primary assembly 300 along the first direction completely falls within the primary assembly 300 .
  • the fourth embodiment changes the positional relationship between the scale 500 and the read head 600 .
  • the linear motor further includes a scale mounting bracket 700 for installing the scale 500 and a scale mounting bracket 700 for installing the reading head.
  • a scale mounting bracket 700 for installing the scale 500
  • a scale mounting bracket 700 for installing the reading head.
  • One of the read head mount 800 , the scale mount 700 and the read head mount 800 of the head 600 is mounted on the base 100 , and the other is mounted on the carriage 200 .
  • the electromagnetic structure in order to make full use of the internal space of the linear motor and maximize its performance, and combined with the linear motion characteristics of the linear motor, when arranging the electromagnetic structure, it is advisable to make the electromagnetic structure full of installation cavities in the length direction, such as , the primary assembly 300 and the secondary assembly 400 can be disposed opposite to each other and extend along the moving direction of the sliding seat 200 .
  • the primary assembly 300 includes an iron core 310 and a winding 320 disposed on the iron core 310
  • the secondary assembly 400 includes a magnetic yoke 410 and a magnetic yoke 410 and spaced apart along the moving direction. At least two magnets 420 on the yoke 410 can form a magnetic field after the primary assembly 300 is energized, and the magnetic field can form an electromagnetic force with the secondary assembly 400 to push the sliding seat 200 to move on the base 100 .
  • the iron core 310 includes a bottom wall 311 and a plurality of vertical walls 312 extending from the bottom wall 311 toward the secondary assembly 400 .
  • a plurality of vertical walls 312 are spaced apart and arranged in parallel, and coils are wound on each of the vertical walls 312 , and the coils form windings 320 .
  • the iron core 310 of this structure has excellent magnetic permeability, and at the same time, more coils can be arranged on it, which is beneficial to form a larger electromagnetic force, so that the linear motor has a stronger driving force.
  • the linear motor in the embodiment of the present application is optimized in terms of structural layout.
  • the reading head is arranged on one side of the primary assembly along the moving direction and is parallel to the primary assembly.
  • the scale is arranged on the side of the secondary assembly perpendicular to the moving direction, or the read head is arranged on one side of the secondary assembly along the moving direction and is arranged side by side with the secondary assembly, and the scale is arranged on the side of the primary assembly.
  • One side perpendicular to the moving direction makes the linear motor as a whole, at least the read head, the primary component and the secondary component share a width space in its width direction, so that the width dimension of the linear motor can be reduced, thereby reducing the linear The overall size of the motor.

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

Abstract

L'invention concerne un moteur linéaire comprenant : une base (100), un chariot (200), un composant primaire et un composant secondaire (400) situés à l'intérieur d'une cavité de montage entourée par la base (100) et le chariot (200), et une règle à réseau (500) et une tête de lecture (600) situées à l'intérieur de la cavité de montage et agencées de manière opposée. L'une parmi la règle à réseau (500) et la tête de lecture (600) est montée sur la base (100), et l'autre est montée sur le chariot (200). La tête de lecture (600) est disposée sur le côté du composant primaire (300) le long de la direction de déplacement et se trouve dans un agencement côte à côte avec le composant primaire (300), et la règle à réseau (500) est disposée sur le côté du composant secondaire (400) perpendiculaire à la direction de déplacement ; ou alors la tête de lecture (600) est disposée sur le côté du composant secondaire (400) le long de la direction de déplacement et est dans un agencement côte à côte avec le composant secondaire (400), et la règle à réseau (500) est disposée sur le côté du composant primaire (300) perpendiculaire à la direction de déplacement. Le moteur linéaire peut réduire la dimension de largeur du moteur linéaire, réduisant ainsi la taille globale du moteur linéaire.
PCT/CN2020/120630 2020-09-18 2020-10-13 Moteur linéaire WO2022056972A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010982815.X 2020-09-18
CN202010982815.XA CN112234792A (zh) 2020-09-18 2020-09-18 一种直线电机

Publications (1)

Publication Number Publication Date
WO2022056972A1 true WO2022056972A1 (fr) 2022-03-24

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ID=74108433

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Application Number Title Priority Date Filing Date
PCT/CN2020/120630 WO2022056972A1 (fr) 2020-09-18 2020-10-13 Moteur linéaire

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CN (1) CN112234792A (fr)
WO (1) WO2022056972A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114400865A (zh) * 2021-12-08 2022-04-26 北京特种机械研究所 电磁推进滑动撬车本体

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JP2016036228A (ja) * 2014-08-04 2016-03-17 日本精工株式会社 テーブル装置、位置決め装置、及び精密機械
CN207518461U (zh) * 2017-09-25 2018-06-19 东莞怡合达自动化股份有限公司 一种新型平板直线电机
CN109314456A (zh) * 2016-06-30 2019-02-05 雅马哈发动机株式会社 线性马达、头单元、表面安装机及单轴机器人
CN109347217A (zh) * 2018-10-17 2019-02-15 南方电机科技有限公司 一种电机及自动化设备
CN209692573U (zh) * 2019-03-06 2019-11-26 深圳市领略数控设备有限公司 一种双磁路型直线马达
CN209692539U (zh) * 2019-03-06 2019-11-26 深圳市领略数控设备有限公司 一种编码器内藏式直线马达

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CN204179920U (zh) * 2014-09-09 2015-02-25 雅科贝思精密机电(上海)有限公司 直线电机模组
CN204124716U (zh) * 2014-09-22 2015-01-28 东莞市智赢传动科技有限公司 一种带直线电机的多工作滑板自动送料装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016036228A (ja) * 2014-08-04 2016-03-17 日本精工株式会社 テーブル装置、位置決め装置、及び精密機械
CN109314456A (zh) * 2016-06-30 2019-02-05 雅马哈发动机株式会社 线性马达、头单元、表面安装机及单轴机器人
CN207518461U (zh) * 2017-09-25 2018-06-19 东莞怡合达自动化股份有限公司 一种新型平板直线电机
CN109347217A (zh) * 2018-10-17 2019-02-15 南方电机科技有限公司 一种电机及自动化设备
CN209692573U (zh) * 2019-03-06 2019-11-26 深圳市领略数控设备有限公司 一种双磁路型直线马达
CN209692539U (zh) * 2019-03-06 2019-11-26 深圳市领略数控设备有限公司 一种编码器内藏式直线马达

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