WO2024108737A1 - 直驱传输系统 - Google Patents

直驱传输系统 Download PDF

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Publication number
WO2024108737A1
WO2024108737A1 PCT/CN2022/144295 CN2022144295W WO2024108737A1 WO 2024108737 A1 WO2024108737 A1 WO 2024108737A1 CN 2022144295 W CN2022144295 W CN 2022144295W WO 2024108737 A1 WO2024108737 A1 WO 2024108737A1
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WO
WIPO (PCT)
Prior art keywords
unit
mover
fixed
transmission system
stator
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PCT/CN2022/144295
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English (en)
French (fr)
Inventor
史卫领
郭顺
薛永健
Original Assignee
瑞声科技（南京）有限公司
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Application filed by 瑞声科技（南京）有限公司 filed Critical 瑞声科技（南京）有限公司
Priority to US18/322,624 priority Critical patent/US20240178727A1/en
Publication of WO2024108737A1 publication Critical patent/WO2024108737A1/zh

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Classifications

    • 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
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • 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

Definitions

  • the utility model relates to the technical field of transmission systems, in particular to a direct-drive transmission system.
  • direct drive transmission systems are widely used in various direct drive motors.
  • the direct drive transmission system of the related art is composed of multiple stators and multiple movers, and the stator drives the movers to move to form a linear drive effect.
  • the left and right travel limits of the direct drive motor are generally achieved by the contact between the base end cover and the limit structure on the slide end cover to achieve hard limit.
  • the base end cover and the slide end cover are staggered in a Z shape, resulting in a relatively complex slide end cover and the base end cover; and in order to achieve a compact structure, it is easy to result in a small limiting contact area and poor reliability.
  • the technical problem to be solved by the utility model is to provide a direct drive transmission system which is easy to assemble, has a large limiting area and high reliability.
  • the utility model provides a direct drive transmission system, which includes a mover unit and a stator unit driving the mover unit to move;
  • the stator unit comprises a stator assembly, two first end caps fixed to two opposite sides of the stator assembly, and two first guide rails fixed to one side of the stator assembly close to the mover unit and extending along the moving direction of the mover unit, wherein the two first guide rails are parallel and spaced apart.
  • the mover unit comprises a mover assembly, two second end caps fixed to opposite sides of the mover assembly, and two second guide rails fixed to one side of the mover assembly close to the stator unit and extending along the movement direction of the mover unit, the two second guide rails are parallel and spaced apart; the two second end caps are respectively opposite to the two first end caps and spaced apart, and the two second guide rails are respectively abutted against the two first guide rails to form a sliding connection; wherein the spacing surface between the first end cap and the second end cap is a plane structure of positive projection;
  • the direct-drive transmission system also includes a limiting structure fixed to a side of the stator assembly close to the mover assembly, and one end of the limiting structure close to the second end cover is located between the two second end covers.
  • the stator assembly drives the mover assembly to make the second guide rail move along the first guide rail so that the second end cover contacts the side wall of the limiting structure to achieve limiting.
  • the first end cover and the second end cover are both rectangular structures, and the end surfaces of the first end cover and the second end cover close to each other are in a straight line structure.
  • the limiting structure is a rectangular structure.
  • the stator assembly includes a slide fixed to the side of the first guide rail away from the mover unit and a first drive unit fixed to the side of the slide close to the mover unit;
  • the mover assembly includes a base fixed to the side of the second guide rail away from the stator unit and a second drive unit fixed to the side of the base close to the first drive unit, and the second drive unit is opposite to the first drive unit and is arranged at an interval; the first drive unit and the second drive unit generate mutual thrust to drive the second guide rail of the base to move linearly along the first guide rail of the slide.
  • the stator assembly also includes a first position feedback device fixed to a side of the slide close to the mover unit
  • the mover assembly also includes a second position feedback device fixed to a side of the base close to the stator unit, and the second position feedback device is opposite to and spaced from the first position feedback device, and is used to read the position of the mover assembly relative to the stator assembly.
  • the first driving unit comprises a plurality of iron cores fixed to the slide seat and arranged along the length direction of the first guide rail, and a driving coil respectively wound around each of the iron cores;
  • the second driving unit includes a yoke fixed to the base and a plurality of permanent magnets fixed to a side of the yoke close to the driving coil, and each of the permanent magnets is spaced apart and directly opposite to one of the driving coils.
  • the first position feedback device is a scale reader; the second position feedback device is a scale, and the scale is spaced apart from and arranged opposite to the scale reader.
  • the direct-drive transmission system of the utility model realizes linear motion by driving the mover unit through the stator unit; the two second guide rails of the mover unit are respectively abutted against the two first guide rails of the stator unit to form a sliding connection; the spacing surface of the first end cover of the stator unit and the second end cover of the mover unit is a plane structure of positive projection; the direct-drive transmission system also includes a limiting structure fixed to the side of the stator assembly close to the mover assembly, one end of the second end cover close to the limiting structure is located between the two second end covers, and the stator assembly drives the mover assembly to make the second guide rail move along the first guide rail, so that the second end cover contacts the side wall of the limiting structure to achieve limiting.
  • the spacing surface between the first end cover and the second end cover is a plane, the structure is simple, and the manufacturing cost is low; at the same time, one end of the limiting structure is fixed to the mover assembly, and the other end of the limiting structure is arranged close to the second end cover, so that the contact area between the side wall of the limiting structure and the second end cover is large, the limiting effect is good, and the reliability of the direct-drive motor is further improved.
  • FIG1 is a schematic diagram of the three-dimensional structure of the direct drive transmission system of the utility model
  • FIG2 is a schematic diagram of the exploded structure of the direct drive transmission system of the utility model
  • Fig. 3 is a cross-sectional view of line A-A in Fig. 1;
  • FIG4 is a cross-sectional view taken along line B-B in FIG1 .
  • FIGS. 1-4 provide a direct-drive transmission system 100 , which includes a mover unit 2 and a stator unit 1 for driving the mover unit 2 to move.
  • the stator unit 1 includes a stator assembly 11, two first end covers 12 fixed to opposite sides of the stator assembly 11, and two first guide rails 13 fixed to one side of the stator assembly 11 close to the mover unit 2 and extending along the movement direction of the mover unit 2.
  • the two first guide rails 13 are parallel and spaced apart.
  • the mover unit 2 includes a mover assembly 21, two second end covers 22 fixed to the opposite sides of the mover assembly 21, and two second guide rails 23 fixed to the mover assembly 21 near the stator unit 1 and extending along the movement direction of the mover unit 2.
  • the two second guide rails 23 are parallel and spaced apart; the two second end covers 22 are respectively opposite to the two first end covers 12 and spaced apart, and the two second guide rails 23 are respectively abutted against the two first guide rails 13 to form a sliding connection, so as to facilitate the linear motion of the mover unit 2 on the stator unit 1.
  • the spacing surface between the first end cover 12 and the second end cover 22 is a planar structure of positive projection.
  • the spacing surface between the first end cover 12 and the second end cover 22 is a plane, which has a simple structure and low manufacturing cost.
  • the primary magnetic field is generated by the stator assembly 11 , and the stator assembly 11 and the mover assembly 21 are directly opposite.
  • the thrust is generated between the stator assembly 11 and the mover assembly 21 to drive the second guide rail 23 of the mover unit 2 to move linearly along the first guide rail 13 of the stator unit 1 .
  • the stator unit 1 may include multiple units, and the mover unit 2 may also include multiple units.
  • the multiple stator units 1 and the multiple mover units 2 are arranged opposite to each other at intervals, and the multiple stator units 1 drive the multiple mover units 2 to achieve cyclic linear motion.
  • the movement direction of the mover unit 2 can be controlled.
  • the direct drive transmission system 100 also includes a limiting structure 3 fixed to the side of the stator assembly 11 close to the mover assembly 21, and one end of the limiting structure 3 close to the second end cover 22 is located between the two second end covers 22.
  • the stator assembly 11 drives the mover assembly 21 to move the second guide rail 23 on the first guide rail 13, so that the second end cover 22 contacts the side wall of the limiting structure 3 to achieve limiting.
  • the interval surface between the first end cover 12 and the second end cover 22 is a plane, the structure is simple, and the manufacturing cost is low; at the same time, one end of the limiting structure 3 is fixed to the mover assembly 21, and the other end of the limiting structure 3 is arranged close to the second end cover 22, so that the contact area between the side wall of the limiting structure 3 and the second end cover 22 is large, the limiting effect is good, and the reliability of the direct drive motor is further improved.
  • first end cover 12 and the second end cover 22 are both rectangular structures, and the end surfaces of the first end cover 12 and the second end cover 22 that are close to each other are in a straight line structure, so that the structures of the first end cover 12 and the second end cover 22 are simple and the manufacturing cost is low.
  • the limiting structure 3 is a rectangular structure. It is convenient to install and fix one end of the limiting structure 3 on the mover assembly 21, and the other end of the limiting structure 3 corresponds to the stator assembly 11, and the side wall of the limiting structure 3 forms a limiting contact with the side surface between the two first end covers 12, thereby realizing a larger area of hard limiting, thereby improving the reliability of the direct drive motor.
  • the stator assembly 11 includes a slide 111 fixed to the side of the first guide rail 13 away from the mover unit 2 and a first drive unit 112 fixed to the side of the slide 111 close to the mover unit 2;
  • the mover assembly 21 includes a base 211 fixed to the side of the second guide rail 23 away from the stator unit 1 and a second drive unit 212 fixed to the side of the base 211 close to the first drive unit 112, and the second drive unit 212 is directly opposite to the first drive unit 112 and is arranged at a distance; the first drive unit 112 and the second drive unit 212 generate mutual thrust to drive the second guide rail 23 of the base 211 to move linearly along the first guide rail 13 of the slide 111.
  • the driving thrust is generated between the first drive unit 112 and the second drive unit 212, so that the base 211 fixed to the second drive unit 212 moves linearly under the action of the thrust.
  • the slide 111 is correspondingly arranged on the base 211 , and a driving thrust is generated between the first driving unit 112 and the second driving unit 212 , so that the slide 111 fixed to the first driving unit 112 performs linear motion under the action of the thrust.
  • the stator assembly 11 further includes a first position feedback device 113 fixed to the side of the slide 111 close to the mover unit 2
  • the mover assembly 21 further includes a second position feedback device 213 fixed to the side of the base 211 close to the stator unit 1, and the second position feedback device 213 is directly opposite to the first position feedback device 113 and is arranged at a distance, and is used to read the position of the mover assembly 21 relative to the stator assembly 11.
  • the first driving unit 112 includes a plurality of iron cores 1121 fixed to the slide 111 and arranged along the length direction of the first guide rail 13, and a driving coil 1122 respectively wound around each of the iron cores 1121.
  • the plurality of driving coils 1122 When the plurality of driving coils 1122 generate current, the plurality of driving coils 1122 are activated to generate a traveling wave magnetic field for driving the second driving unit 212 to move.
  • the plurality of driving coils 1122 are fixed in the iron core 1121 to increase the magnetic field of the driving coil 1122, thereby better driving the second driving unit 212 to move linearly.
  • the plurality of driving coils 1122 are arranged side by side and evenly spaced apart on a side of the iron core 1121 close to the second driving unit 212 , so that the magnetic field is uniform and the driving effect is good.
  • the second driving unit 212 includes a yoke 2121 fixed to the base 211 and a plurality of permanent magnets 2122 fixed to one side of the yoke 2121 close to the driving coil 1122, and each of the permanent magnets 2122 is spaced and directly opposite to one of the driving coils 1122.
  • the driving coil 1122 When a suitable current is passed through the driving coil 1122, the driving coil 1122 generates a primary traveling wave magnetic field, and the permanent magnet 2122 generates a secondary magnetic field, and a thrust is generated between the driving coil 1122 and the permanent magnet 2122, so that the driving base 211 moves linearly on the slide 111.
  • a plurality of permanent magnets 2122 are fixed to the yoke 2121 in parallel and at intervals.
  • the first position feedback device 113 is a scale reader; the second position feedback device 213 is a scale, and the scale is spaced apart from and arranged opposite to the scale reader.
  • the scale reader is used to identify the position information fed back by the scale, so as to facilitate real-time positioning of the mover unit 2.
  • the scale is an incremental scale, and the measurement principle of the scale is to modulate light into moiré fringes through two relatively moving gratings, obtain the displacement change by counting and subdividing the moiré fringes, and determine the position by setting one or more reference points on the scale grating.
  • the scale is installed on the mover unit 2, and the feedback position accuracy of the scale is high.
  • the scale is arranged opposite to the reader, so that the reader can easily identify the information of the scale in real time, with high recognition and reading efficiency and good positioning effect.
  • the scale is installed on the base 211 and the reader is installed on the slide 111.
  • the scale and the scale reader are arranged opposite to each other to read the position information of the mover unit 2 in real time, so as to facilitate real-time positioning of the mover unit 2.
  • the scale is a grating or a magnetic grating, which has low cost.
  • the scale is not limited to a grating or a magnetic grating.
  • the direct-drive transmission system of the utility model realizes linear motion by driving the mover unit through the stator unit; the two second guide rails of the mover unit are respectively abutted against the two first guide rails of the stator unit to form a sliding connection; the spacing surface of the first end cover of the stator unit and the second end cover of the mover unit is a plane structure of positive projection; the direct-drive transmission system also includes a limiting structure fixed to the side of the stator assembly close to the mover assembly, and one end of the second end cover close to the limiting structure is located between the two second end covers, and the stator assembly drives the mover assembly to make the second guide rail move on the first guide rail, so that the second end cover contacts the side wall of the limiting structure to achieve limiting.
  • the spacing surface between the first end cover and the second end cover is a plane, the structure is simple, and the manufacturing cost is low; at the same time, one end of the limiting structure is fixed to the mover assembly, and the other end of the limiting structure is arranged close to the second end cover, so that the contact area between the side wall of the limiting structure and the second end cover is large, the limiting effect is good, and the reliability of the direct-drive motor is further improved.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)

Abstract

一种直驱传输系统（100），直驱传输系统（100）包括动子单元（2）和驱动动子单元（2）运动的定子单元（1）；定子单元（1）包括定子组件（11）、两个第一端盖（12）和两个第一导轨（13）；动子单元（2）包括动子组件（21）、两个第二端盖（22）和两个第二导轨（23），两个第二端盖（22）分别与两个第一端盖（12）正对且间隔设置，两个第二导轨（23）分别与两个第一导轨（13）抵接形成滑动连接；其中，第一端盖（12）和第二端盖（22）的间隔面为正投影的平面结构；直驱传输系统（100）还包括限位结构（3），限位结构（3）靠近的第二端盖（22）的一端位于两个第二端盖（22）之间，定子组件（11）驱动动子组件（21）使第二导轨（23）沿第一导轨（13）运动，以使第二端盖（22）与限位结构（3）的侧壁接触实现限位。与相关技术相比，该直驱传输系统（100）的电机组装方便，限位面积大，可靠性高。

Description

直驱传输系统 技术领域
本实用新型涉及一种传输系统技术领域，尤其涉及一种直驱传输系统。
 背景技术
随着直驱传输系统技术的发展，直驱传输系统在各种直驱电机中得到广泛的应用。
相关技术的所述直驱传输系统由多段定子与多动子组成，通过定子驱动动子运动形成直线驱动的效果。在现有直驱传输系统中，一般直驱电机的左右行程限位由基座端盖与滑座端盖上的限位结构接触，实现硬限位。
 技术问题
然而，相关技术的一些紧凑的电机结构里面，基座端盖和滑座端盖Z字形互相错开，导致滑座端盖和基座端盖相对复杂；且为了结构紧凑，容易导致限位接触面积小，可靠性差。
因此，有必要提供一种新的直驱传输系统来解决上述问题。
 技术解决方案
本实用新型要解决的技术问题是提供一种组装方便，限位面积大，可靠性高的直驱传输系统。
为解决上述技术问题，本实用新型提供了一种直驱传输系统，所述直驱传输系统包括动子单元和驱动所述动子单元运动的定子单元；
所述定子单元包括定子组件、固定于所述定子组件的相对两周侧的两个第一端盖和固定于所述定子组件的靠近所述动子单元一侧并沿所述动子单元的运动方向延伸的两个第一导轨，两个所述第一导轨平行且间隔设置；
所述动子单元包括动子组件、固定于所述动子组件的相对两周侧的两个第二端盖和固定于所述动子组件的靠近所述定子单元一侧并沿所述动子单元的运动方向延伸的两个第二导轨，两个所述第二导轨平行且间隔设置；两个所述第二端盖分别与两个所述第一端盖正对且间隔设置，两个所述第二导轨分别与两个所述第一导轨抵接形成滑动连接；其中，所述第一端盖和所述第二端盖的间隔面为正投影的平面结构；
所述直驱传输系统还包括固定于所述定子组件靠近所述动子组件一侧的限位结构，所述限位结构靠近的所述第二端盖的一端位于两个所述第二端盖之间，所述定子组件驱动所述动子组件使所述第二导轨沿所述第一导轨运动，以使所述第二端盖与所述限位结构的侧壁接触实现限位。
优选的，所述第一端盖和所述第二端盖均为矩形结构，且所述第一端盖和所述第二端盖互相靠近的端面为一字形结构。
优选的，所述限位结构为矩形结构。
优选的，所述定子组件包括固定于所述第一导轨远离所述动子单元一侧的滑座和固定于所述滑座靠近所述动子单元一侧的第一驱动单元；所述动子组件包括固定于所述第二导轨远离所述定子单元一侧的基座和固定于所述基座靠近所述第一驱动单元一侧的第二驱动单元，所述第二驱动单元与所述第一驱动单元正对且间隔设置；所述第一驱动单元和所述第二驱动单元产生相互推力，用以驱动所述基座的所述第二导轨沿所述滑座的所述第一导轨进行直线运动。
优选的，所述定子组件还包括固定于所述滑座靠近所述动子单元一侧的第一位置反馈装置，所述动子组件还包括固定于所述基座靠近所述定子单元一侧的第二位置反馈装置，所述第二位置反馈装置与所述第一位置反馈装置正对且间隔设置，用于读取所述动子组件相对于所述定子组件的位置。
优选的，所述第一驱动单元包括固定于所述滑座的并沿所述第一导轨的长度方向排布的多个铁芯和分别绕设于每一所述铁芯的驱动线圈；
所述第二驱动单元包括固定于所述基座的磁轭和固定于所述磁轭靠近所述驱动线圈一侧的多个永磁体，每一所述永磁体与其中一个所述驱动线圈间隔正对。
优选的，所述第一位置反馈装置为栅尺读头；所述第二位置反馈装置为栅尺，所述栅尺与所述栅尺读头间隔且正对设置。
 有益效果
与相关技术相比，本实用新型直驱传输系统，通过定子单元驱动动子单元实现直线运动；动子单元的两个第二导轨分别与定子单元的两个第一导轨抵接形成滑动连接；将定子单元的第一端盖和动子单元的第二端盖的间隔面为正投影的平面结构；所述直驱传输系统还包括固定于所述定子组件靠近所述动子组件一侧的限位结构，所述限位结构靠近的所述第二端盖的一端位于两个所述第二端盖之间，所述定子组件驱动所述动子组件使所述第二导轨沿所述第一导轨运动，以使所述第二端盖与所述限位结构的侧壁接触实现限位。这样使第一端盖和第二端盖间隔面为平面，结构简单，制作成本低；同时，限位结构的一端固定于动子组件，限位结构的另一端靠近第二端盖设置，使得限位结构的侧壁与第二端盖的接触面积大，限位效果好，进一步提高直驱电机的可靠性。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型直驱传输系统的立体结构示意图；
图2为本实用新型直驱传输系统的分解结构示意图；
图3为图1中A-A线的剖示图；
图4为图1中B-B线的剖示图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请参阅图1-4所示，提供一种直驱传输系统100，所述直驱传输系统100包括动子单元2和驱动所述动子单元2运动的定子单元1。
所述定子单元1包括定子组件11、固定于所述定子组件11的相对两周侧的两个第一端盖12和固定于所述定子组件11的靠近所述动子单元2一侧并沿所述动子单元2的运动方向延伸的两个第一导轨13，两个所述第一导轨13平行且间隔设置。
所述动子单元2包括动子组件21、固定于所述动子组件21的相对两周侧的两个第二端盖22和固定于所述动子组件21的靠近所述定子单元1一侧并沿所述动子单元2的运动方向延伸的两个第二导轨23，两个所述第二导轨23平行且间隔设置；两个所述第二端盖22分别与两个所述第一端盖12正对且间隔设置，两个所述第二导轨23分别与两个所述第一导轨13抵接形成滑动连接，方便动子单元2在定子单元1上进行直线运动。其中，所述第一端盖12和所述第二端盖22的间隔面为正投影的平面结构。使第一端盖12和第二端盖22间隔面为平面，结构简单，制作成本低。
通过定子组件11产生初级磁场，定子组件11和动子组件21正对，利用定子组件11和动子组件21之间产生推力，驱动动子单元2的第二导轨23沿定子单元1的第一导轨13上进行直线运动。
优选的，定子单元1还可以包括多个，动子单元2也包括多个，多个定子单元1和多个动子单元2正对间隔设置，通过多个定子单元1驱动多个动子单元2实现循环直线运动。通过调节定子单元1的磁场驱动方向，可以控制动子单元2的运动方向。
所述直驱传输系统100还包括固定于所述定子组件11靠近所述动子组件21一侧的限位结构3，所述限位结构3靠近的所述第二端盖22的一端位于两个所述第二端盖22之间，所述定子组件11驱动所述动子组件21使所述第二导轨23在所述第一导轨13运动，以使所述第二端盖22与所述限位结构3的侧壁接触实现限位。这样使第一端盖12和第二端盖22间隔面为平面，结构简单，制作成本低；同时，限位结构3的一端固定于动子组件21，限位结构3的另一端靠近第二端盖22设置，使得限位结构3的侧壁与第二端盖22的接触面积大，限位效果好，进一步提高直驱电机的可靠性。
本实施方式中，所述第一端盖12和所述第二端盖22均为矩形结构，且所述第一端盖12和所述第二端盖22互相靠近的端面为一字形结构。使得第一端盖12和第二端盖22的结构简单，制造成本低。
本实施方式中，所述限位结构3为矩形结构。便于将限位结构3一端安装固定于动子组件21上，将限位结构3的另一端对应定子组件11，限位结构3的侧壁与两第一端盖12之间的侧面形成限位接触，从而实现更大面积的硬限位，进而提高直驱电机的可靠性。
其中，限位结构3与第一端盖12之间的接触面积越大，直驱电机的可靠性更高。
本实施方式中，所述定子组件11包括固定于所述第一导轨13远离所述动子单元2一侧的滑座111和固定于所述滑座111靠近所述动子单元2一侧的第一驱动单元112；所述动子组件21包括固定于所述第二导轨23远离所述定子单元1一侧的基座211和固定于所述基座211靠近所述第一驱动单元112一侧的第二驱动单元212，所述第二驱动单元212与所述第一驱动单元112正对且间隔设置；所述第一驱动单元112和所述第二驱动单元212产生相互推力，用以驱动所述基座211的所述第二导轨23沿所述滑座111的第一导轨13进行直线运动。通过第一驱动单元112和第二驱动单元212之间产生驱动推力，以使固定于第二驱动单元212的基座211在推力的作用下进行直线运动。当然，当基座211固定时，滑座111对应设置于基座211上，通过第一驱动单元112和第二驱动单元212之间产生驱动推力，以使固定于第一驱动单元112的滑座111在推力的作用下进行直线运动。
本实施方式中，所述定子组件11还包括固定于所述滑座111靠近所述动子单元2一侧的第一位置反馈装置113，所述动子组件21还包括固定于所述基座211靠近所述定子单元1一侧的第二位置反馈装置213，所述第二位置反馈装置213与所述第一位置反馈装置113正对且间隔设置，用于读取所述动子组件21相对于所述定子组件11的位置。通过第一位置反馈装置113和第二位置反馈装置213之间进行位置信息采集，从而能够定位动子组件21的位置，定位精度高。
本实施方式中，所述第一驱动单元112包括固定于所述滑座111的并沿所述第一导轨13的长度方向排布的多个铁芯1121和分别绕设于每一所述铁芯1121的驱动线圈1122。当多个驱动线圈1122产生电流时，使多个驱动线圈1122启动产生行波磁场，用于驱动第二驱动单元212运动。将多个驱动线圈1122固定于铁芯1121内，用于增加驱动线圈1122的磁场，从而更好的驱动第二驱动单元212直线运动。
优选的，多个驱动线圈1122并排且均匀间隔设置于铁芯1121靠近第二驱动单元212的一侧，磁场均匀，驱动效果好。
所述第二驱动单元212包括固定于所述基座211的磁轭2121和固定于所述磁轭2121靠近所述驱动线圈1122一侧的多个永磁体2122，每一所述永磁体2122与其中一个所述驱动线圈1122间隔正对。通过将多个永磁体2122固定于磁轭2121的一侧，将磁轭2121的另一侧固定于基座211，通过多个永磁体2122始终产生磁场力。驱动线圈1122通入合适的电流时，驱动线圈1122初级产生行波磁场，永磁体2122产生次级磁场，通过驱动线圈1122和永磁体2122之间产生推力，驱动基座211在滑座111上进行直线运动。
优选的，多个永磁体2122并排且间隔固定于磁轭2121。
本实施方式中，所述第一位置反馈装置113为栅尺读头；所述第二位置反馈装置213为栅尺，所述栅尺与所述栅尺读头间隔且正对设置。栅尺读头用于识别栅尺反馈的位置信息，方便对动子单元2进行实时定位。
其中，栅尺为增量式栅尺，栅尺的测量原理是将光通过两个相对运动的光栅调制成摩尔条纹，通过对摩尔条纹进行计数、细分后得到位移变化量，并通过在标尺光栅上设定一个或是多个参考点来确定位置。可选的，所述栅尺安装于所述动子单元2上，栅尺的反馈位置精度高。将所述栅尺与所述读头正对设置，使得读头便于实时识别栅尺的信息，识别读写效率高，定位效果好。
可选的，栅尺安装于基座211上，读头安装于滑座111，所述栅尺与所述栅尺读头正对设置，用以实时读取动子单元2的位置信息，方便对动子单元2进行实时定位。
可选的，栅尺为光栅或磁栅，光栅或磁栅成本低。其中，栅尺不限于光栅或磁栅。
与相关技术相比，本实用新型直驱传输系统，通过定子单元驱动动子单元实现直线运动；动子单元的两个第二导轨分别与定子单元的两个第一导轨抵接形成滑动连接；将定子单元的第一端盖和动子单元的第二端盖的间隔面为正投影的平面结构；所述直驱传输系统还包括固定于所述定子组件靠近所述动子组件一侧的限位结构，所述限位结构靠近的所述第二端盖的一端位于两个所述第二端盖之间，所述定子组件驱动所述动子组件使所述第二导轨在所述第一导轨运动，以使所述第二端盖与所述限位结构的侧壁接触实现限位。这样使第一端盖和第二端盖间隔面为平面，结构简单，制作成本低；同时，限位结构的一端固定于动子组件，限位结构的另一端靠近第二端盖设置，使得限位结构的侧壁与第二端盖的接触面积大，限位效果好，进一步提高直驱电机的可靠性。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (7)

  1. 一种直驱传输系统，其特征在于，所述直驱传输系统包括动子单元和驱动所述动子单元运动的定子单元；
    所述定子单元包括定子组件、固定于所述定子组件的相对两周侧的两个第一端盖和固定于所述定子组件的靠近所述动子单元一侧并沿所述动子单元的运动方向延伸的两个第一导轨，两个所述第一导轨平行且间隔设置；
    所述动子单元包括动子组件、固定于所述动子组件的相对两周侧的两个第二端盖和固定于所述动子组件的靠近所述定子单元一侧并沿所述动子单元的运动方向延伸的两个第二导轨，两个所述第二导轨平行且间隔设置；两个所述第二端盖分别与两个所述第一端盖正对且间隔设置，两个所述第二导轨分别与两个所述第一导轨抵接形成滑动连接；其中，所述第一端盖和所述第二端盖的相互靠近的端面为正投影的平面结构；
    所述直驱传输系统还包括固定于所述定子组件靠近所述动子组件一侧的限位结构，所述限位结构靠近的所述第二端盖的一端位于两个所述第二端盖之间，所述定子组件驱动所述动子组件使所述第二导轨沿所述第一导轨运动，以使所述第二端盖与所述限位结构的侧壁接触实现限位。
  2. 根据权利要求1所述的直驱传输系统，其特征在于，所述第一端盖和所述第二端盖均为矩形结构，且所述第一端盖和所述第二端盖互相靠近的端面为一字形结构。
  3. 根据权利要求1所述的直驱传输系统，其特征在于，所述限位结构为矩形结构。
  4. 根据权利要求1所述的直驱传输系统，其特征在于，所述定子组件包括固定于所述第一导轨远离所述动子单元一侧的滑座和固定于所述滑座靠近所述动子单元一侧的第一驱动单元；所述动子组件包括固定于所述第二导轨远离所述定子单元一侧的基座和固定于所述基座靠近所述第一驱动单元一侧的第二驱动单元，所述第二驱动单元与所述第一驱动单元正对且间隔设置；所述第一驱动单元和所述第二驱动单元产生相互推力，用以驱动所述基座的所述第二导轨沿所述滑座的所述第一导轨进行直线运动。
  5. 根据权利要求4所述的直驱传输系统，其特征在于，所述定子组件还包括固定于所述滑座靠近所述动子单元一侧的第一位置反馈装置，所述动子组件还包括固定于所述基座靠近所述定子单元一侧的第二位置反馈装置，所述第二位置反馈装置与所述第一位置反馈装置正对且间隔设置，用于读取所述动子组件相对于所述定子组件的位置。
  6. 根据权利要求4所述的直驱传输系统，其特征在于，所述第一驱动单元包括固定于所述滑座的并沿所述第一导轨的长度方向排布的多个铁芯和分别绕设于每一所述铁芯的驱动线圈；
    所述第二驱动单元包括固定于所述基座的磁轭和固定于所述磁轭靠近所述驱动线圈一侧的多个永磁体，每一所述永磁体与其中一个所述驱动线圈间隔正对。
  7. 根据权利要求5所述的直驱传输系统，其特征在于，所述第一位置反馈装置为栅尺读头；所述第二位置反馈装置为栅尺，所述栅尺与所述栅尺读头间隔且正对设置。
PCT/CN2022/144295 2022-11-25 2022-12-30 直驱传输系统 WO2024108737A1 (zh)

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