WO2022047928A1 - Linear motor - Google Patents

Linear motor Download PDF

Info

Publication number
WO2022047928A1
WO2022047928A1 PCT/CN2020/123203 CN2020123203W WO2022047928A1 WO 2022047928 A1 WO2022047928 A1 WO 2022047928A1 CN 2020123203 W CN2020123203 W CN 2020123203W WO 2022047928 A1 WO2022047928 A1 WO 2022047928A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic yoke
sliding seat
linear motor
magnetic
sliding
Prior art date
Application number
PCT/CN2020/123203
Other languages
French (fr)
Chinese (zh)
Inventor
史卫领
郭顺
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 WO2022047928A1 publication Critical patent/WO2022047928A1/en

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
    • 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
    • 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.
  • linear motor does not need intermediate transmission mechanism, and has the advantages of high precision, high dynamic response and high rigidity.
  • the mechanical losses are extremely small, the maintenance requirements of the linear motor are low, and the service life is long. Therefore, the application of linear motors is becoming more and more extensive.
  • Permanent magnet synchronous linear motors mostly use high-performance rare earth magnets as the secondary, and slotted steel cores as the primary to increase the output per unit volume of the motor, that is, the thrust density. It is precisely because of the existence of cogging that the air gap of the motor is uneven, causing thrust fluctuations, that is, cogging force.
  • the cogging force not only affects the smoothness of motion and the low-speed performance of the precision motion system, but also easily causes the noise of the high-speed motion system.
  • the secondary magnets are generally inclined in the same direction at a certain angle. After the magnets are inclined, a bending moment will be generated between the motor mover and the stator, which affects the performance of the motor.
  • the purpose of the present application is to provide a linear motor to solve the technical problem that the linear motor in the prior art is inclined to generate a bending moment between the mover and the stator of the motor due to the inclination of the magnetic steel, thereby affecting the performance of the motor.
  • an embodiment of the present application provides a linear motor, comprising: a sliding mechanism, a primary mechanism and a secondary mechanism that are relatively spaced apart on the sliding mechanism;
  • the sliding mechanism includes a base and a movable mechanism disposed on the sliding mechanism.
  • the sliding seat on the base, the primary mechanism is fixedly connected to the base, and the secondary mechanism is fixedly connected to the sliding seat; or, the primary mechanism is fixedly connected to the sliding seat, and the secondary mechanism is fixedly connected to the sliding seat.
  • the stage mechanism is fixedly connected to the base;
  • the secondary mechanism includes at least a first secondary unit and a second secondary unit arranged along the moving direction of the carriage, and the first secondary unit includes a first magnetic yoke and a second magnetic yoke disposed on the first magnetic yoke
  • the first magnetic steel on the second yoke, the second secondary unit includes a second magnetic yoke and a second magnetic steel disposed on the second magnetic yoke, the first magnetic yoke and the second magnetic yoke have edge a long axis arranged in the moving direction of the sliding seat and a short axis arranged perpendicular to the long axis
  • the first magnetic steel is inclined by a first angle from the extending direction of the short axis toward the moving direction of the sliding seat
  • the second magnetic steel is inclined by a second angle from the extending direction of the short axis away from the moving direction of the sliding seat.
  • the first angle is equal to the second angle.
  • the primary mechanism includes an iron core provided with the tooth slots and a winding arranged on the iron core.
  • the base includes a bottom wall, side walls oppositely and spaced apart on the bottom wall, and the sliding seat is movably connected to an end of the side wall away from the bottom wall.
  • the iron core is arranged on the sliding seat, the first magnetic yoke and the second magnetic yoke are arranged on the bottom wall; and the notch of the tooth slot faces the first magnetic yoke. a magnet and the second magnet.
  • the iron core is arranged on the bottom wall, the first magnetic yoke and the second magnetic yoke are arranged on the sliding seat, and the notch of the tooth slot faces the first magnetic yoke. a magnet and the second magnet.
  • the first magnetic yoke is spaced apart from the second magnetic yoke.
  • the sliding mechanism further includes a guide rail disposed between the side wall and the sliding seat.
  • one end of the side wall away from the bottom wall is provided with a first guide groove for guiding with the guide rail, and a second guide groove for guiding with the guide rail is provided on the sliding seat.
  • the linear motor further includes a scale arranged on the bottom wall and a scale reading head arranged on the sliding seat relative to the scale.
  • the secondary mechanism includes at least a first secondary unit and a second secondary unit arranged along the moving direction of the sliding seat, and the first magnetic yoke and the second magnetic yoke have along the sliding seat.
  • the first magnetic steel set on the first magnetic yoke is inclined by a first angle from the extension direction of the short axis toward the moving direction of the carriage, so that the first time A first bending moment is generated between the secondary unit and the primary mechanism, and the second magnetic steel disposed on the second yoke is inclined at a second angle from the extension direction of the short axis away from the moving direction of the carriage, so that the second secondary unit and the primary A second bending moment is generated between the mechanisms. Therefore, the inclination direction of the first magnetic steel is opposite to that of the second magnetic steel.
  • the first bending moment and the second bending moment can cancel each other.
  • this technical solution reduces the thrust fluctuation between the primary mechanism and the secondary mechanism through the inclined first magnetic steel and the inclined second magnetic steel, so that the overall thrust of the linear motor can be improved; on the other hand, by setting the first magnetic steel
  • the inclination direction of the steel is opposite to the inclination direction of the second magnetic steel, which solves the technical problem that the linear motor generates a bending moment between the mover and the stator of the motor due to the inclination of the magnetic steel, thereby affecting the performance of the motor.
  • FIG. 1 is a schematic diagram of the overall structure of a linear motor in an embodiment of the application
  • Fig. 2 is the front view of Fig. 1;
  • Fig. 3 is the exploded structure schematic diagram of Fig. 1;
  • FIG. 4 is a schematic structural diagram of a secondary mechanism of a linear motor in an embodiment of the application.
  • Fig. 5 is the sectional view of A-A direction in Fig. 1;
  • FIG. 6 is a schematic diagram of the overall structure of a linear motor in another embodiment of the present application.
  • FIG. 7 is a front view of FIG. 6 .
  • the present application provides a linear motor 10, referring to FIG. 1, FIG. 2, FIG. 6 and FIG. 7, the linear motor 10 includes a sliding mechanism 13, a primary mechanism 11 and a secondary mechanism 12; the sliding mechanism 13 includes a base 131 and a movable The sliding seat 132 provided on the base 131, the primary mechanism 11 and the secondary mechanism 12 are relatively set on the sliding mechanism 13 with a preset physical gap, so that the thrust generated by the interaction between the primary mechanism 11 and the secondary mechanism 12 can push the primary mechanism 11 or the secondary mechanism 12 performs linear motion.
  • the primary mechanism 11 is fixed on the base 131
  • the secondary mechanism 12 is fixed on the sliding seat 132
  • the secondary mechanism 12 slides relative to the primary mechanism 11
  • the primary mechanism 11 is fixed on the sliding seat 132
  • the secondary mechanism 12 is fixed on the base A seat 131 , the primary mechanism 11 slides relative to the secondary mechanism 12 .
  • the secondary mechanism 12 at least includes a first secondary unit 121 and a second secondary unit 122 arranged along the moving direction of the sliding seat 132
  • the first secondary unit 121 includes a first magnetic yoke 1212 and the first magnetic steel 1211 disposed on the first magnetic yoke 1212
  • the second secondary unit 122 includes a second magnetic yoke 1222 and a second magnetic steel 1221 disposed on the second magnetic yoke 1222
  • the second magnetic yoke 1222 has a long axis arranged along the moving direction of the sliding seat 132 and a short axis arranged perpendicular to the long axis
  • the first magnetic steel 1211 is inclined by a first angle from the extending direction of the short axis toward the moving direction of the sliding seat 132
  • the second magnetic steel 1221 is inclined by a second angle from the extending direction of the short axis away from the moving direction of the sliding seat 132 .
  • the secondary mechanism 12 includes at least a first secondary unit 121 and a second secondary unit 122 along the moving direction of the carriage 132 , and the first magnetic yoke 1212 and the second magnetic yoke 1222 have a The long axis set in the moving direction and the short axis set perpendicular to the long axis, the first magnetic steel 1211 disposed on the first magnetic yoke 1212 is inclined by a first angle from the extension direction of the short axis toward the moving direction of the carriage 132, so that the A first bending moment is generated between the primary unit 121 and the primary mechanism 11, and the second magnetic steel 1221 disposed on the second yoke 1222 is inclined at a second angle away from the moving direction of the carriage 132 from the extension direction of the short axis, so that A second bending moment is generated between the second secondary unit 122 and the primary mechanism 11.
  • the inclination direction of the first magnetic steel 1211 is opposite to the inclination direction of the second magnetic steel 1221.
  • the first bending The moment and the second bending moment can cancel each other.
  • this technical solution reduces the thrust fluctuation generated between the primary mechanism 11 and the secondary mechanism 12 through the inclined first magnetic steel 1211 and the inclined second magnetic steel 1221, and can improve the overall thrust of the linear motor 10;
  • the linear motor 10 is solved due to the inclination of the magnetic steel, resulting in a bending moment between the mover and the stator of the motor and thus affecting the performance of the motor. technical issues.
  • the electromagnetic thrust acting on the first secondary unit 121 is decomposed into a first component force and a vertical force in the same moving direction as the sliding seat 132.
  • the first secondary unit 121 Due to the second component force of the first magnetic steel 1211 , the first secondary unit 121 generates a first bending moment due to the second component force; The same third component force and the fourth component force perpendicular to the second magnetic steel 1221, the second primary unit 112 generates a second bending moment due to the fourth component force, the inclination directions of the first magnetic steel 1211 and the second magnetic steel 1221 On the contrary, so the second component force and the fourth component force act in opposite directions, and the first bending moment generated by the second component force and the second bending moment generated by the fourth component force rotate in opposite directions, so that the bending moment can be offset. Effect.
  • the secondary mechanism 12 includes at least the first secondary unit 121 and the second secondary unit 122 arranged along the moving direction of the sliding seat 132 , then, the secondary mechanism 12 is further configured to include the moving along the sliding seat 132
  • the first sub-unit 121, the second sub-unit 122, the third sub-unit, the fourth sub-unit and other sub-units arranged in the direction, and the inclination directions of the magnets of any two sub-units are opposite, In order to achieve the effect of bending moment offset.
  • the secondary mechanism 12 is inclined to reduce the thrust fluctuation during the operation of the motor, and the positions of two or more secondary units are reasonably arranged to further reduce the thrust fluctuation during the operation of the linear motor 10 .
  • the first angle is equal to the second angle, the first angle at which the first magnetic steel 1211 is inclined from the extension direction of the short axis to the moving direction of the sliding seat 132 and the extension direction of the second magnetic steel 1221 from the short axis is away from the sliding seat
  • the moving direction of 132 is inclined at the same second angle.
  • the first angle is ⁇ a
  • the second angle is ⁇ b
  • the magnitudes of ⁇ a and ⁇ b are equal, so the first magnetic steel 1211 receives the first angle.
  • the magnitude of the bending moment is the same as the magnitude of the second bending moment received by the second magnetic steel 1221, and the direction is opposite, so that the first bending moment and the second bending moment can be almost completely canceled.
  • the primary mechanism 11 includes an iron core 111 with a tooth slot 11 a and a winding 112 provided on the iron core 111 .
  • the winding 112 is connected to the AC power supply, the air gap between the first secondary unit 121, the second secondary unit 122 and the primary mechanism 11 generates a traveling wave magnetic field, and the first secondary unit 121 and the second secondary unit 122 are in the traveling wave.
  • an electromotive force will be induced and a current will be generated, and the current and the magnetic field in the air gap will generate an electromagnetic thrust.
  • the primary mechanism 11 is fixed, the electromagnetic thrust pushes the secondary mechanism 12 to move linearly; when the secondary mechanism 12 is fixed, the electromagnetic thrust pushes the primary mechanism 11 to move linearly.
  • the base 131 includes a bottom wall 1311 and side walls 1312 opposite and spaced from the bottom wall 1311 .
  • the primary mechanism 11 and the secondary mechanism 12 are located in the space formed by the base 131 and the sliding seat 132 , and realize relative linear motion by sliding on the sliding seat 132 and the opposite side wall 1312 .
  • the sliding mechanism 13 further includes a guide rail 133 disposed between the side wall 1312 and the sliding seat 132 , so that the sliding seat 132 can smoothly slide relative to the base 131 .
  • one end of the side wall 1312 away from the bottom wall 1311 is provided with a first guide groove 1312 a for guiding with the guide rail 133 .
  • the guide rail 133 is fixedly connected to the side wall 1312 through the first guide groove 1312a, and the sliding seat 132 slides relative to the guide rail 133 through the second guide groove 132a; If the seat 132 is fixedly connected, the guide rail 133 slides relative to the side wall 1312 through the first guide groove 1312a to drive the sliding seat 132 to move linearly.
  • the iron core 111 is disposed on the sliding seat 132 , the first magnetic yoke 1212 and the second magnetic yoke 1222 are disposed on the base 131 , specifically, the teeth of the iron core 111
  • the notch of the slot 11a faces the first magnetic steel 1211 provided on the first magnetic yoke 1212 and the second magnetic steel 1221 provided on the second magnetic yoke 1222 .
  • the primary mechanism 11 is set on the sliding seat 132 through the iron core 111, and the secondary mechanism 12 is set on the base 131 through the first magnetic yoke 1212 and the second magnetic yoke 1222; therefore, the secondary mechanism 12 is fixed, and the primary mechanism 11 is in Under the action of the thrust, the sliding seat 132 moves linearly relative to the secondary mechanism 12 .
  • the iron core 111 is disposed on the bottom wall 1311
  • the first magnetic yoke 1212 and the second magnetic yoke 1222 are disposed on the sliding seat 132 , specifically, the teeth of the iron core 111
  • the notch of the slot 11a faces the first magnetic steel 1211 provided on the first magnetic yoke 1212 and the second magnetic steel 1221 provided on the second magnetic yoke 1222 .
  • the primary mechanism 11 is arranged on the base 131 through the iron core 111, and the secondary mechanism 12 is arranged on the sliding seat 132 through the first magnetic yoke 1212 and the second magnetic yoke 1222; therefore, the primary mechanism 11 is fixed, and the secondary mechanism 12 is in Under the action of the thrust, the sliding seat 132 moves linearly relative to the primary mechanism 11 .
  • the first magnetic yoke 1212 and the second magnetic yoke 1222 are spaced apart, and the distance between the first magnetic yoke 1212 and the second magnetic yoke 1222 can be adjusted according to actual needs to avoid the first time
  • the primary unit 121 and the second secondary unit 122 are in contact with each other due to the bending moment.
  • the linear motor 10 also includes a scale 141 disposed on the bottom wall 1311 and a scale reading head 142 disposed on the carriage 132 relative to the scale 141 .
  • the scale reading head 142 moves linearly with the sliding seat 132, the scale reading head 142 also moves on the scale 141 synchronously, so as to detect the relative displacement between the primary mechanism 11 and the secondary mechanism 12, so as to realize the detection of the linear motor 10. Control of linear motion.

Landscapes

  • 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

A linear motor, comprising a sliding mechanism (13), a primary mechanism (11) and a secondary mechanism (12); the sliding mechanism (13) comprises a base (131) and a sliding base (132) movably provided on the base (131); the secondary mechanism (12) at least comprises a first secondary unit (121) and a second secondary unit (122) arranged in the moving direction of the sliding base (132); the first secondary unit (121) comprises a first magnetic yoke (1212) and first magnetic steel (1211) provided on the first magnetic yoke (1212), the second secondary unit (122) comprises a second magnetic yoke (1222) and second magnetic steel (1221) provided on the second magnetic yoke (1222), the first magnetic yoke (1212) and the second magnetic yoke (1222) have a long axis arranged in the moving direction of the sliding base (132) and a short axis arranged perpendicular to the long axis; and the first magnetic steel (1211) inclines by a first angle towards the moving direction of the sliding base (132) from the extending direction of the short axis, and the second magnetic steel (1221) inclines by a second angle away from the moving direction of the sliding base (132) from the extending direction of the short axis. The solution solves the technical problem of a linear motor that bending moment is generated between a rotor and a stator of a motor due to inclination of magnetic steel, which affects the performance of the motor.

Description

一种直线电机a linear motor 技术领域technical field
本申请涉及电机的技术领域，尤其涉及一种直线电机。The present application relates to the technical field of motors, and in particular, to a linear motor.
背景技术Background technique
直线电机作为一种零传动的驱动机构，不需要中间传动机构，并且具有高精度、高动态响应和高刚性等优势。此外，由于没有传动的磨损，机械损耗极小，直线电机的维护需求低，寿命长。因此，直线电机的应用也越来越广泛。As a drive mechanism with zero transmission, linear motor does not need intermediate transmission mechanism, and has the advantages of high precision, high dynamic response and high rigidity. In addition, because there is no wear and tear of the transmission, the mechanical losses are extremely small, the maintenance requirements of the linear motor are low, and the service life is long. Therefore, the application of linear motors is becoming more and more extensive.
技术问题technical problem
永磁同步直线电机多采用高性能稀土磁钢作为次级，带齿槽钢片铁芯作为初级，以提高单位体积电机的出力，即推力密度。正是由于齿槽的存在，造成电机气隙不均匀，引起推力波动，即齿槽力。该齿槽力除影响运动的平滑性及精密运动***的低速性能外，也容易引发高速运动***的噪音。Permanent magnet synchronous linear motors mostly use high-performance rare earth magnets as the secondary, and slotted steel cores as the primary to increase the output per unit volume of the motor, that is, the thrust density. It is precisely because of the existence of cogging that the air gap of the motor is uneven, causing thrust fluctuations, that is, cogging force. The cogging force not only affects the smoothness of motion and the low-speed performance of the precision motion system, but also easily causes the noise of the high-speed motion system.
现有的斜极型直线电机，其次级磁钢一般按照一定角度往同一个方向倾斜，磁钢倾斜后，会在电机动子和定子之间产生弯矩，影响电机性能。In the existing oblique-pole linear motor, the secondary magnets are generally inclined in the same direction at a certain angle. After the magnets are inclined, a bending moment will be generated between the motor mover and the stator, which affects the performance of the motor.
因此，有必要提供一种新型的直线电机来解决上述问题。Therefore, it is necessary to provide a new type of linear motor to solve the above problems.
技术解决方案technical solutions
本申请的目的在于提供一种直线电机，以解决现有技术中的直线电机因磁钢倾斜，而导致电机的动子和定子之间产生弯矩进而影响电机性能的技术问题。The purpose of the present application is to provide a linear motor to solve the technical problem that the linear motor in the prior art is inclined to generate a bending moment between the mover and the stator of the motor due to the inclination of the magnetic steel, thereby affecting the performance of the motor.
为此，本申请实施例中提供了一种直线电机，包括：滑动机构、相对间隔设置在所述滑动机构上初级机构和次级机构；所述滑动机构包括基座和可移动的设置在所述基座上的滑座，所述初级机构固定连接于所述基座，所述次级机构固定连接于所述滑座；或，所述初级机构固定连接于所述滑座，所述次级机构固定连接于所述基座； To this end, an embodiment of the present application provides a linear motor, comprising: a sliding mechanism, a primary mechanism and a secondary mechanism that are relatively spaced apart on the sliding mechanism; the sliding mechanism includes a base and a movable mechanism disposed on the sliding mechanism. The sliding seat on the base, the primary mechanism is fixedly connected to the base, and the secondary mechanism is fixedly connected to the sliding seat; or, the primary mechanism is fixedly connected to the sliding seat, and the secondary mechanism is fixedly connected to the sliding seat. The stage mechanism is fixedly connected to the base;
所述次级机构至少包括沿所述滑座的移动方向布置的第一次级单元和第二次级单元，所述第一次级单元包括第一磁轭和设置在所述第一磁轭上的第一磁钢，所述第二次级单元包括第二磁轭和设置在所述第二磁轭上的第二磁钢，所述第一磁轭和所述第二磁轭具有沿所述滑座的移动方向设置的长轴和与所述长轴垂直设置的短轴，所述第一磁钢自所述短轴的延伸方向朝向所述滑座的移动方向倾斜第一角度，所述第二磁钢自所述短轴的延伸方向背离所述滑座的移动方向倾斜第二角度。The secondary mechanism includes at least a first secondary unit and a second secondary unit arranged along the moving direction of the carriage, and the first secondary unit includes a first magnetic yoke and a second magnetic yoke disposed on the first magnetic yoke The first magnetic steel on the second yoke, the second secondary unit includes a second magnetic yoke and a second magnetic steel disposed on the second magnetic yoke, the first magnetic yoke and the second magnetic yoke have edge a long axis arranged in the moving direction of the sliding seat and a short axis arranged perpendicular to the long axis, the first magnetic steel is inclined by a first angle from the extending direction of the short axis toward the moving direction of the sliding seat, The second magnetic steel is inclined by a second angle from the extending direction of the short axis away from the moving direction of the sliding seat.
作为一种改进，所述第一角度与所述第二角度相等。As an improvement, the first angle is equal to the second angle.
作为一种改进，所述初级机构包括开设有所述齿槽的铁芯和设置于所述铁芯上的绕组。As an improvement, the primary mechanism includes an iron core provided with the tooth slots and a winding arranged on the iron core.
作为一种改进，所述基座包括底壁、相对且间隔设置在所述底壁上的侧壁，所述滑座与所述侧壁的远离所述底壁的一端活动连接。As an improvement, the base includes a bottom wall, side walls oppositely and spaced apart on the bottom wall, and the sliding seat is movably connected to an end of the side wall away from the bottom wall.
作为一种改进，所述铁芯设置在所述滑座上，所述第一磁轭和所述第二磁轭设置在所述底壁上；且所述齿槽的槽口朝向所述第一磁钢和所述第二磁钢。As an improvement, the iron core is arranged on the sliding seat, the first magnetic yoke and the second magnetic yoke are arranged on the bottom wall; and the notch of the tooth slot faces the first magnetic yoke. a magnet and the second magnet.
作为一种改进，所述铁芯设置在所述底壁上，所述第一磁轭和所述第二磁轭设置在所述滑座上，且所述齿槽的槽口朝向所述第一磁钢和所述第二磁钢。As an improvement, the iron core is arranged on the bottom wall, the first magnetic yoke and the second magnetic yoke are arranged on the sliding seat, and the notch of the tooth slot faces the first magnetic yoke. a magnet and the second magnet.
作为一种改进，所述第一磁轭与所述第二磁轭间隔设置。As an improvement, the first magnetic yoke is spaced apart from the second magnetic yoke.
作为一种改进，所述滑动机构还包括设置所述侧壁与所述滑座之间的导轨。As an improvement, the sliding mechanism further includes a guide rail disposed between the side wall and the sliding seat.
作为一种改进，所述侧壁的远离底壁的一端开设有与所述导轨导接的第一导向槽，所述滑座上开设有与所述导轨导接的第二导向槽。As an improvement, one end of the side wall away from the bottom wall is provided with a first guide groove for guiding with the guide rail, and a second guide groove for guiding with the guide rail is provided on the sliding seat.
作为一种改进，所述直线电机还包括设置在所述底壁上的栅尺和相对所述栅尺设置在所述滑座上的栅尺读数头。As an improvement, the linear motor further includes a scale arranged on the bottom wall and a scale reading head arranged on the sliding seat relative to the scale.
有益效果beneficial effect
本申请的有益效果在于：在本申请中，次级机构至少包括沿滑座的移动方向布置的第一次级单元和第二次级单元，第一磁轭和第二磁轭具有沿滑座的移动方向设置的长轴和与长轴垂直设置的短轴，设置在第一磁轭上的第一磁钢自短轴的延伸方向朝向滑座的移动方向倾斜第一角度，使得第一次级单元与初级机构之间产生第一弯矩，设置在第二磁轭上的第二磁钢自短轴的延伸方向背离滑座的移动方向倾斜第二角度，使得第二次级单元与初级机构之间产生第二弯矩，因此，第一磁钢的倾斜方向与第二磁钢的倾斜方向相反，就直线电机整体而言，第一弯矩和第二弯矩可以相互抵消。本技术方案一方面通过倾斜的第一磁钢和倾斜的第二磁钢减小了初级机构与次级机构之间的推力波动，可以提升直线电机的整体推力；另一方面通过设置第一磁钢的倾斜方向与第二磁钢的倾斜方向相反，解决了直线电机因磁钢倾斜，而导致电机的动子和定子之间产生弯矩进而影响电机性能的技术问题。The beneficial effect of the present application is that: in the present application, the secondary mechanism includes at least a first secondary unit and a second secondary unit arranged along the moving direction of the sliding seat, and the first magnetic yoke and the second magnetic yoke have along the sliding seat. The long axis set in the moving direction and the short axis set perpendicular to the long axis, the first magnetic steel set on the first magnetic yoke is inclined by a first angle from the extension direction of the short axis toward the moving direction of the carriage, so that the first time A first bending moment is generated between the secondary unit and the primary mechanism, and the second magnetic steel disposed on the second yoke is inclined at a second angle from the extension direction of the short axis away from the moving direction of the carriage, so that the second secondary unit and the primary A second bending moment is generated between the mechanisms. Therefore, the inclination direction of the first magnetic steel is opposite to that of the second magnetic steel. As far as the linear motor as a whole is concerned, the first bending moment and the second bending moment can cancel each other. On the one hand, this technical solution reduces the thrust fluctuation between the primary mechanism and the secondary mechanism through the inclined first magnetic steel and the inclined second magnetic steel, so that the overall thrust of the linear motor can be improved; on the other hand, by setting the first magnetic steel The inclination direction of the steel is opposite to the inclination direction of the second magnetic steel, which solves the technical problem that the linear motor generates a bending moment between the mover and the stator of the motor due to the inclination of the magnetic steel, thereby affecting the performance of the motor.
附图说明Description of drawings
图1为本申请一实施例中直线电机的整体结构示意图；1 is a schematic diagram of the overall structure of a linear motor in an embodiment of the application;
图2为图1的主视图；Fig. 2 is the front view of Fig. 1;
图3为图1的分解结构示意图；Fig. 3 is the exploded structure schematic diagram of Fig. 1;
图4为本申请一实施例中直线电机的次级机构的结构示意图；4 is a schematic structural diagram of a secondary mechanism of a linear motor in an embodiment of the application;
图5为图1中A-A方向的剖视图；Fig. 5 is the sectional view of A-A direction in Fig. 1;
图6为本申请另一实施例中直线电机的整体结构示意图；6 is a schematic diagram of the overall structure of a linear motor in another embodiment of the present application;
图7为图6的主视图。FIG. 7 is a front view of FIG. 6 .
本发明的实施方式Embodiments of the present invention
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳的实施例。但是，本申请可以通过其他多种不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the accompanying drawings. However, the present application may be implemented in various other forms, and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the disclosure of this application is provided.
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are for the purpose of describing specific embodiments only, and are not intended to limit the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
本申请提供了一种直线电机10，参见图1、图2、图6及图7，直线电机10包括滑动机构13、初级机构11和次级机构12；滑动机构13包括基座131和可移动的设置在基座131上的滑座132，初级机构11与次级机构12以预设物理间隙相对设置滑动机构13上，使得初级机构11和次级机构12相互作用产生的推力可以推动初级机构11或次级机构12作直线运动。如，初级机构11固定于基座131，次级机构12固定于滑座132，次级机构12相对初级机构11滑动；又如，初级机构11固定于滑座132，次级机构12固定于基座131，初级机构11相对次级机构12滑动。The present application provides a linear motor 10, referring to FIG. 1, FIG. 2, FIG. 6 and FIG. 7, the linear motor 10 includes a sliding mechanism 13, a primary mechanism 11 and a secondary mechanism 12; the sliding mechanism 13 includes a base 131 and a movable The sliding seat 132 provided on the base 131, the primary mechanism 11 and the secondary mechanism 12 are relatively set on the sliding mechanism 13 with a preset physical gap, so that the thrust generated by the interaction between the primary mechanism 11 and the secondary mechanism 12 can push the primary mechanism 11 or the secondary mechanism 12 performs linear motion. For example, the primary mechanism 11 is fixed on the base 131, the secondary mechanism 12 is fixed on the sliding seat 132, and the secondary mechanism 12 slides relative to the primary mechanism 11; for another example, the primary mechanism 11 is fixed on the sliding seat 132, and the secondary mechanism 12 is fixed on the base A seat 131 , the primary mechanism 11 slides relative to the secondary mechanism 12 .
如图3-图5所示，次级机构12至少包括沿滑座132的移动方向布置的第一次级单元121和第二次级单元122，第一次级单元121包括第一磁轭1212和设置在第一磁轭1212上的第一磁钢1211，第二次级单元122包括第二磁轭1222和设置在第二磁轭1222上的第二磁钢1221，第一磁轭1212和第二磁轭1222具有沿滑座132的移动方向设置的长轴和与长轴垂直设置的短轴，第一磁钢1211自短轴的延伸方向朝向滑座132的移动方向倾斜第一角度，第二磁钢1221自短轴的延伸方向背离滑座132的移动方向倾斜第二角度。其中，长轴和短轴的方向请参见图1、图4及图6。As shown in FIGS. 3-5 , the secondary mechanism 12 at least includes a first secondary unit 121 and a second secondary unit 122 arranged along the moving direction of the sliding seat 132 , and the first secondary unit 121 includes a first magnetic yoke 1212 and the first magnetic steel 1211 disposed on the first magnetic yoke 1212, the second secondary unit 122 includes a second magnetic yoke 1222 and a second magnetic steel 1221 disposed on the second magnetic yoke 1222, the first magnetic yoke 1212 and The second magnetic yoke 1222 has a long axis arranged along the moving direction of the sliding seat 132 and a short axis arranged perpendicular to the long axis, and the first magnetic steel 1211 is inclined by a first angle from the extending direction of the short axis toward the moving direction of the sliding seat 132, The second magnetic steel 1221 is inclined by a second angle from the extending direction of the short axis away from the moving direction of the sliding seat 132 . The directions of the long axis and the short axis are shown in FIG. 1 , FIG. 4 and FIG. 6 .
在本申请中，次级机构12至少包括沿滑座132的移动方向的第一次级单元121和第二次级单元122，第一磁轭1212和第二磁轭1222具有沿滑座132的移动方向设置的长轴和与长轴垂直设置的短轴，设置在第一磁轭1212上的第一磁钢1211自短轴的延伸方向朝向滑座132的移动方向倾斜第一角度，使得第一次级单元121与初级机构11之间产生第一弯矩，设置在第二磁轭1222上的第二磁钢1221自短轴的延伸方向背离滑座132的移动方向倾斜第二角度，使得第二次级单元122与初级机构11之间产生第二弯矩，因此，第一磁钢1211的倾斜方向与第二磁钢1221的倾斜方向相反，就直线电机10整体而言，第一弯矩和第二弯矩可以相互抵消。本技术方案一方面通过倾斜的第一磁钢1211和倾斜的第二磁钢1221减小了初级机构11与次级机构12之间而产生的推力波动，可以提升直线电机10的整体推力；另一方面通过设置第一磁钢1211的倾斜方向与第二磁钢1221的倾斜方向相反，解决了直线电机10因磁钢倾斜，而导致电机的动子和定子之间产生弯矩进而影响电机性能的技术问题。In the present application, the secondary mechanism 12 includes at least a first secondary unit 121 and a second secondary unit 122 along the moving direction of the carriage 132 , and the first magnetic yoke 1212 and the second magnetic yoke 1222 have a The long axis set in the moving direction and the short axis set perpendicular to the long axis, the first magnetic steel 1211 disposed on the first magnetic yoke 1212 is inclined by a first angle from the extension direction of the short axis toward the moving direction of the carriage 132, so that the A first bending moment is generated between the primary unit 121 and the primary mechanism 11, and the second magnetic steel 1221 disposed on the second yoke 1222 is inclined at a second angle away from the moving direction of the carriage 132 from the extension direction of the short axis, so that A second bending moment is generated between the second secondary unit 122 and the primary mechanism 11. Therefore, the inclination direction of the first magnetic steel 1211 is opposite to the inclination direction of the second magnetic steel 1221. For the linear motor 10 as a whole, the first bending The moment and the second bending moment can cancel each other. On the one hand, this technical solution reduces the thrust fluctuation generated between the primary mechanism 11 and the secondary mechanism 12 through the inclined first magnetic steel 1211 and the inclined second magnetic steel 1221, and can improve the overall thrust of the linear motor 10; On the one hand, by setting the inclination direction of the first magnetic steel 1211 to be opposite to the inclination direction of the second magnetic steel 1221, the linear motor 10 is solved due to the inclination of the magnetic steel, resulting in a bending moment between the mover and the stator of the motor and thus affecting the performance of the motor. technical issues.
以初级机构11固定在基座132，次级机构12固定在滑座132上为例，电磁推力作用在第一次级单元121分解成与滑座132的移动方向相同的第一分力和垂直于第一磁钢1211的第二分力，第一次级单元121因第二分力产生第一弯矩；电磁推力作用在第二次级单元122上后分解成与滑座132的移动方向相同的第三分力和垂直于第二磁钢1221的第四分力，第二初级单元112因第四分力产生第二弯矩，第一磁钢1211和第二磁钢1221的倾斜方向相反，因此第二分力与第四分力的作用方向相反，因第二分力产生的第一弯矩和因第四分力产生的第二弯矩转动方向相反，从而达到弯矩抵消的效果。Taking the primary mechanism 11 fixed on the base 132 and the secondary mechanism 12 fixed on the sliding seat 132 as an example, the electromagnetic thrust acting on the first secondary unit 121 is decomposed into a first component force and a vertical force in the same moving direction as the sliding seat 132. Due to the second component force of the first magnetic steel 1211 , the first secondary unit 121 generates a first bending moment due to the second component force; The same third component force and the fourth component force perpendicular to the second magnetic steel 1221, the second primary unit 112 generates a second bending moment due to the fourth component force, the inclination directions of the first magnetic steel 1211 and the second magnetic steel 1221 On the contrary, so the second component force and the fourth component force act in opposite directions, and the first bending moment generated by the second component force and the second bending moment generated by the fourth component force rotate in opposite directions, so that the bending moment can be offset. Effect.
需要说明的是，次级机构12至少包括沿滑座132的移动方向布置的第一次级单元121和第二次级单元122，则，次级机构12还设置为包括沿滑座132的移动方向布置的第一次级单元121、第二次级单元122、第三次级单元、第四次级单元等多个次级单元，且任意两个次级单元的磁钢的倾斜方向相反，以达到弯矩抵消的作用。同时次级机构12斜极，降低了电机运行时的推力波动，两个或两个以上次级单元的位置合理配置以进一步降低直线电机10运行时的推力波动。It should be noted that, the secondary mechanism 12 includes at least the first secondary unit 121 and the second secondary unit 122 arranged along the moving direction of the sliding seat 132 , then, the secondary mechanism 12 is further configured to include the moving along the sliding seat 132 The first sub-unit 121, the second sub-unit 122, the third sub-unit, the fourth sub-unit and other sub-units arranged in the direction, and the inclination directions of the magnets of any two sub-units are opposite, In order to achieve the effect of bending moment offset. At the same time, the secondary mechanism 12 is inclined to reduce the thrust fluctuation during the operation of the motor, and the positions of two or more secondary units are reasonably arranged to further reduce the thrust fluctuation during the operation of the linear motor 10 .
优选地，第一角度与第二角度相等，第一磁钢1211自短轴的延伸方向朝向滑座132的移动方向倾斜的第一角度和第二磁钢1221自短轴的延伸方向背离滑座132的移动方向倾斜的第二角度相等，如图4所示，第一角度为∠a，第二角度为∠b，∠a和∠b的大小相等，因而第一磁钢1211受到的第一弯矩大小与第二磁钢1221受到的第二弯矩大小相同，方向相反，使得第一弯矩和第二弯矩可以几乎完全抵消。Preferably, the first angle is equal to the second angle, the first angle at which the first magnetic steel 1211 is inclined from the extension direction of the short axis to the moving direction of the sliding seat 132 and the extension direction of the second magnetic steel 1221 from the short axis is away from the sliding seat The moving direction of 132 is inclined at the same second angle. As shown in Figure 4, the first angle is ∠a, the second angle is ∠b, and the magnitudes of ∠a and ∠b are equal, so the first magnetic steel 1211 receives the first angle. The magnitude of the bending moment is the same as the magnitude of the second bending moment received by the second magnetic steel 1221, and the direction is opposite, so that the first bending moment and the second bending moment can be almost completely canceled.
其中，初级机构11包括开设有齿槽11a的铁芯111和设置于铁芯111上的绕组112。绕组112通入交流电源，第一次级单元121、第二次级单元122与初级机构11之间的气隙产生行波磁场，第一次级单元121和第二次级单元122在行波磁场的切割下，将感应出电动势并产生电流，该电流与气隙中的磁场作用就产生电磁推力。当初级机构11固定，则电磁推力推动次级机构12直线运动；当次级机构12固定，则电磁推力推动初级机构11直线运动。 Wherein, the primary mechanism 11 includes an iron core 111 with a tooth slot 11 a and a winding 112 provided on the iron core 111 . The winding 112 is connected to the AC power supply, the air gap between the first secondary unit 121, the second secondary unit 122 and the primary mechanism 11 generates a traveling wave magnetic field, and the first secondary unit 121 and the second secondary unit 122 are in the traveling wave. Under the cutting of the magnetic field, an electromotive force will be induced and a current will be generated, and the current and the magnetic field in the air gap will generate an electromagnetic thrust. When the primary mechanism 11 is fixed, the electromagnetic thrust pushes the secondary mechanism 12 to move linearly; when the secondary mechanism 12 is fixed, the electromagnetic thrust pushes the primary mechanism 11 to move linearly.
在一些具体的实施例中，基座131包括底壁1311、相对且间隔设置在底壁1311上的侧壁1312，滑座132与侧壁1312的远离底壁1311的一端活动连接。初级机构11和次级机构12位于基座131和滑座132形成的空间中，并通过设置在滑座132和相对侧壁1312的滑动来实现相对直线运动。In some specific embodiments, the base 131 includes a bottom wall 1311 and side walls 1312 opposite and spaced from the bottom wall 1311 . The primary mechanism 11 and the secondary mechanism 12 are located in the space formed by the base 131 and the sliding seat 132 , and realize relative linear motion by sliding on the sliding seat 132 and the opposite side wall 1312 .
在一种实施例中，滑动机构13还包括设置侧壁1312与滑座132之间的导轨133，以使得滑座132可顺利的相对基座131滑动。In one embodiment, the sliding mechanism 13 further includes a guide rail 133 disposed between the side wall 1312 and the sliding seat 132 , so that the sliding seat 132 can smoothly slide relative to the base 131 .
参加图3，侧壁1312的远离底壁1311的一端开设有与导轨133导接的第一导向槽1312a，滑座132上开设有与导轨133导接的第二导向槽132a。Referring to FIG. 3 , one end of the side wall 1312 away from the bottom wall 1311 is provided with a first guide groove 1312 a for guiding with the guide rail 133 .
在一些具体的实施例中，导轨133通过第一导向槽1312a与侧壁1312固定连接，则滑座132通过第二导向槽132a相对导轨133滑动；或，导轨133通过第二导向槽132a与滑座132固定连接，则导轨133通过第一导向槽1312a相对侧壁1312滑动，以带动滑座132直线运动。In some specific embodiments, the guide rail 133 is fixedly connected to the side wall 1312 through the first guide groove 1312a, and the sliding seat 132 slides relative to the guide rail 133 through the second guide groove 132a; If the seat 132 is fixedly connected, the guide rail 133 slides relative to the side wall 1312 through the first guide groove 1312a to drive the sliding seat 132 to move linearly.
在一种实施例中，参见图1及图2，铁芯111设置在滑座132上，第一磁轭1212和第二磁轭1222设置在基座131上，具体地，铁芯111的齿槽11a槽口朝向设置在第一磁轭1212上第一磁钢1211和设置在第二磁轭1222上的第二磁钢1221。即初级机构11通过铁芯111设置在滑座132上，次级机构12通过第一磁轭1212和第二磁轭1222设置在基座131上；因此，次级机构12固定，初级机构11在推力作用下随着滑座132相对次级机构12作直线运动。In one embodiment, referring to FIGS. 1 and 2 , the iron core 111 is disposed on the sliding seat 132 , the first magnetic yoke 1212 and the second magnetic yoke 1222 are disposed on the base 131 , specifically, the teeth of the iron core 111 The notch of the slot 11a faces the first magnetic steel 1211 provided on the first magnetic yoke 1212 and the second magnetic steel 1221 provided on the second magnetic yoke 1222 . That is, the primary mechanism 11 is set on the sliding seat 132 through the iron core 111, and the secondary mechanism 12 is set on the base 131 through the first magnetic yoke 1212 and the second magnetic yoke 1222; therefore, the secondary mechanism 12 is fixed, and the primary mechanism 11 is in Under the action of the thrust, the sliding seat 132 moves linearly relative to the secondary mechanism 12 .
在一种实施例中，参见图6及图7，铁芯111设置在底壁1311上，第一磁轭1212和第二磁轭1222设置在滑座132上，具体地，铁芯111的齿槽11a槽口朝向设置在第一磁轭1212上第一磁钢1211和设置在第二磁轭1222上的第二磁钢1221。即初级机构11通过铁芯111设置在基座131上，次级机构12通过第一磁轭1212和第二磁轭1222设置在滑座132上；因此，初级机构11固定，次级机构12在推力作用下随着滑座132相对初级机构11作直线运动。In one embodiment, referring to FIGS. 6 and 7 , the iron core 111 is disposed on the bottom wall 1311 , the first magnetic yoke 1212 and the second magnetic yoke 1222 are disposed on the sliding seat 132 , specifically, the teeth of the iron core 111 The notch of the slot 11a faces the first magnetic steel 1211 provided on the first magnetic yoke 1212 and the second magnetic steel 1221 provided on the second magnetic yoke 1222 . That is, the primary mechanism 11 is arranged on the base 131 through the iron core 111, and the secondary mechanism 12 is arranged on the sliding seat 132 through the first magnetic yoke 1212 and the second magnetic yoke 1222; therefore, the primary mechanism 11 is fixed, and the secondary mechanism 12 is in Under the action of the thrust, the sliding seat 132 moves linearly relative to the primary mechanism 11 .
请参见图5，优选地，第一磁轭1212与第二磁轭1222间隔设置，且第一磁轭1212和第二磁轭1222之间的距离可根据实际需要进行调整，以避免第一次级单元121和第二次级单元122因受到弯矩而抵接。Referring to FIG. 5 , preferably, the first magnetic yoke 1212 and the second magnetic yoke 1222 are spaced apart, and the distance between the first magnetic yoke 1212 and the second magnetic yoke 1222 can be adjusted according to actual needs to avoid the first time The primary unit 121 and the second secondary unit 122 are in contact with each other due to the bending moment.
直线电机10还包括设置在底壁1311上的栅尺141和相对栅尺141设置在滑座132上的栅尺读数头142。栅尺读数头142随着滑座132直线运动时，栅尺读数头142也同步在栅尺141上运动，从而检测出初级机构11与次级机构12之前的相对位移，从而实现对直线电机10直线运动的控制。The linear motor 10 also includes a scale 141 disposed on the bottom wall 1311 and a scale reading head 142 disposed on the carriage 132 relative to the scale 141 . When the scale reading head 142 moves linearly with the sliding seat 132, the scale reading head 142 also moves on the scale 141 synchronously, so as to detect the relative displacement between the primary mechanism 11 and the secondary mechanism 12, so as to realize the detection of the linear motor 10. Control of linear motion.
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It is considered to be the range described in this specification.
以上实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。The above examples only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

  1. 一种直线电机，包括：滑动机构、相对间隔设置在所述滑动机构上初级机构和次级机构；所述滑动机构包括基座和可移动的设置在所述基座上的滑座，所述初级机构固定连接于所述基座，所述次级机构固定连接于所述滑座；或，所述初级机构固定连接于所述滑座，所述次级机构固定连接于所述基座； A linear motor, comprising: a sliding mechanism, a primary mechanism and a secondary mechanism arranged on the sliding mechanism relatively spaced apart; the sliding mechanism includes a base and a movable sliding seat arranged on the base, the The primary mechanism is fixedly connected to the base, and the secondary mechanism is fixedly connected to the sliding seat; or, the primary mechanism is fixedly connected to the sliding seat, and the secondary mechanism is fixedly connected to the base;
    所述次级机构至少包括沿所述滑座的移动方向布置的第一次级单元和第二次级单元，所述第一次级单元包括第一磁轭和设置在所述第一磁轭上的第一磁钢，所述第二次级单元包括第二磁轭和设置在所述第二磁轭上的第二磁钢，所述第一磁轭和所述第二磁轭具有沿所述滑座的移动方向设置的长轴和与所述长轴垂直设置的短轴，所述第一磁钢自所述短轴的延伸方向朝向所述滑座的移动方向倾斜第一角度，所述第二磁钢自所述短轴的延伸方背离所述滑座的移动方向倾斜第二角度。The secondary mechanism includes at least a first secondary unit and a second secondary unit arranged along the moving direction of the carriage, and the first secondary unit includes a first magnetic yoke and a second magnetic yoke disposed on the first magnetic yoke The first magnetic steel on the second yoke, the second secondary unit includes a second magnetic yoke and a second magnetic steel disposed on the second magnetic yoke, the first magnetic yoke and the second magnetic yoke have edge a long axis arranged in the moving direction of the sliding seat and a short axis arranged perpendicular to the long axis, the first magnetic steel is inclined by a first angle from the extending direction of the short axis toward the moving direction of the sliding seat, The second magnetic steel is inclined at a second angle from the extension of the short axis away from the moving direction of the sliding seat.
  2. 根据权利要求1所述的直线电机，其特征在于，所述第一角度与所述第二角度相等。The linear motor of claim 1, wherein the first angle is equal to the second angle.
  3. 根据权利要求2所述的直线电机，其特征在于， 所述初级机构包括开设有齿槽的铁芯和设置于所述铁芯上的绕组。The linear motor according to claim 2, wherein the primary mechanism includes an iron core with cogging and windings provided on the iron core.
  4. 根据权利要求3所述的直线电机，其特征在于，所述基座包括底壁、相对且间隔设置在所述底壁上的侧壁，所述滑座与所述侧壁的远离所述底壁的一端活动连接。The linear motor according to claim 3, wherein the base comprises a bottom wall, side walls opposite and spaced apart from the bottom wall, and the sliding seat and the side walls are far from the bottom One end of the wall is articulated.
  5. 根据权利要求4所述的直线电机，其特征在于，所述铁芯设置在所述滑座上，所述第一磁轭和所述第二磁轭设置在所述底壁上；且所述齿槽的槽口朝向所述第一磁钢和所述第二磁钢。The linear motor according to claim 4, wherein the iron core is arranged on the sliding seat, the first magnetic yoke and the second magnetic yoke are arranged on the bottom wall; and the The slots of the cogging face the first magnet steel and the second magnet steel.
  6. 根据权利要求4所述的直线电机，其特征在于，所述铁芯设置在所述底壁上，所述第一磁轭和所述第二磁轭设置在所述滑座上，且所述齿槽的槽口朝向所述第一磁钢和所述第二磁钢。The linear motor according to claim 4, wherein the iron core is arranged on the bottom wall, the first magnetic yoke and the second magnetic yoke are arranged on the sliding seat, and the The slots of the cogging face the first magnet steel and the second magnet steel.
  7. 根据权利要求5或6所述的直线电机，其特征在于，所述第一磁轭与所述第二磁轭间隔设置。The linear motor according to claim 5 or 6, wherein the first magnetic yoke and the second magnetic yoke are spaced apart.
  8. 根据权利要求4所述的直线电机，其特征在于，所述滑动机构还包括设置所述侧壁与所述滑座之间的导轨。The linear motor according to claim 4, wherein the sliding mechanism further comprises a guide rail provided between the side wall and the sliding seat.
  9. 根据权利要求8所述的直线电机，其特征在于，所述侧壁的远离底壁的一端开设有与所述导轨导接的第一导向槽，所述滑座上开设有与所述导轨导接的第二导向槽。The linear motor according to claim 8, wherein a first guide groove for guiding with the guide rail is formed at one end of the side wall away from the bottom wall, and a first guide groove for guiding with the guide rail is formed on the sliding seat. connected to the second guide groove.
  10. 根据权利要求5所述的直线电机，其特征在于，所述直线电机还包括设置在所述底壁上的栅尺和相对所述栅尺设置在所述滑座上的栅尺读数头。The linear motor according to claim 5, wherein the linear motor further comprises a scale arranged on the bottom wall and a scale reading head arranged on the sliding seat relative to the scale.
PCT/CN2020/123203 2020-09-04 2020-10-23 Linear motor WO2022047928A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010922168.3A CN112234796B (en) 2020-09-04 2020-09-04 Linear motor
CN202010922168.3 2020-09-04

Publications (1)

Publication Number Publication Date
WO2022047928A1 true WO2022047928A1 (en) 2022-03-10

Family

ID=74115877

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/123203 WO2022047928A1 (en) 2020-09-04 2020-10-23 Linear motor

Country Status (2)

Country Link
CN (1) CN112234796B (en)
WO (1) WO2022047928A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001112231A (en) * 1999-10-01 2001-04-20 Toyota Autom Loom Works Ltd Linear induction motor
CN202034884U (en) * 2011-01-07 2011-11-09 青岛同日电机有限公司 Permanent magnet linear synchronous motor
CN104779773A (en) * 2015-03-24 2015-07-15 沈阳工业大学 V-shaped low-magnetic-resistance fluctuation type permanent magnet linear motor
CN108736687A (en) * 2018-05-31 2018-11-02 浙江大学 A kind of line inductance electromotor based on V-groove secondary structure
CN109787447A (en) * 2019-01-29 2019-05-21 哈尔滨工业大学 A kind of two-freedom motion platform based on double secondary linear motors
CN110649782A (en) * 2019-09-12 2020-01-03 珠海格力电器股份有限公司 Primary iron core staggered driving structure, linear motor and numerical control equipment
CN111224530A (en) * 2019-11-25 2020-06-02 合肥工业大学 Permanent magnet synchronous linear motor with bilateral asymmetric V-shaped magnetic poles
CN111564949A (en) * 2020-05-28 2020-08-21 歌尔股份有限公司 Linear motor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103532337A (en) * 2013-10-25 2014-01-22 肖俊东 Permanent magnet linear motor and permanent magnet array component thereof, as well as permanent magnet motor and component thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001112231A (en) * 1999-10-01 2001-04-20 Toyota Autom Loom Works Ltd Linear induction motor
CN202034884U (en) * 2011-01-07 2011-11-09 青岛同日电机有限公司 Permanent magnet linear synchronous motor
CN104779773A (en) * 2015-03-24 2015-07-15 沈阳工业大学 V-shaped low-magnetic-resistance fluctuation type permanent magnet linear motor
CN108736687A (en) * 2018-05-31 2018-11-02 浙江大学 A kind of line inductance electromotor based on V-groove secondary structure
CN109787447A (en) * 2019-01-29 2019-05-21 哈尔滨工业大学 A kind of two-freedom motion platform based on double secondary linear motors
CN110649782A (en) * 2019-09-12 2020-01-03 珠海格力电器股份有限公司 Primary iron core staggered driving structure, linear motor and numerical control equipment
CN111224530A (en) * 2019-11-25 2020-06-02 合肥工业大学 Permanent magnet synchronous linear motor with bilateral asymmetric V-shaped magnetic poles
CN111564949A (en) * 2020-05-28 2020-08-21 歌尔股份有限公司 Linear motor

Also Published As

Publication number Publication date
CN112234796B (en) 2024-04-02
CN112234796A (en) 2021-01-15

Similar Documents

Publication Publication Date Title
WO2022047941A1 (en) Linear motor
CN102255470B (en) LPMSM (linear permanent magnet synchronous motor) with low-thrust fluctuation
CN107508449B (en) Unit motor module permanent magnetic linear synchronous motor
JP2008125345A (en) Iron-core linear motor high output density and reduced in detent force
TW201705655A (en) Rectilinear motion linear module and position control servo system provided with module
US20150207367A1 (en) Laminar segment for electric motor segmented stator
CN105356719B (en) A kind of straight-line motion mechanism of permanent magnetic linear synchronous motor
CN108599520A (en) More mover moving-magnetic type Discrete control linear induction motor systems
CN107086756A (en) Low-thrust fluctuates independent winding permanent-magnetism linear motor
WO2022047928A1 (en) Linear motor
WO2022047927A1 (en) Linear motor
CN106100284B (en) A kind of straight-line motion mechanism of permanent magnetic linear synchronous motor
WO2022067917A1 (en) Linear motor
JP2001211630A (en) Linear slider
CN107493004A (en) A kind of modularization cylindrical permanent linear synchronous motor
CN102931804B (en) Double-side stator unyoked disperse magnetic guide block type linear switched reluctance motor
WO2022047926A1 (en) Linear motor
CN108683319A (en) Low-speed high-thrust-density double-layer fractional slot winding cylindrical linear
CN111181340B (en) Combined modular dual-rotor permanent magnet rotating linear motor and driving equipment
CN210092991U (en) Rotor core, stepped bidirectional magnetic beam tidying groove rotor, motor and compressor
CN108649764B (en) Three-degree-of-freedom bearingless permanent magnet motor with constant current source excitation
CN108110987B (en) Double-stator rotor-free yoke oriented silicon steel sheet permanent magnet linear motor
CN218102932U (en) Double-layer winding permanent magnet synchronous linear motor
CN218473012U (en) Direct-drive system
KR100931848B1 (en) Stator of permanent magnet excitation lateral flux motor with E type mover iron core

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20952170

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20952170

Country of ref document: EP

Kind code of ref document: A1