WO2020015549A1 - 一种直线电机 - Google Patents
一种直线电机 Download PDFInfo
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- WO2020015549A1 WO2020015549A1 PCT/CN2019/095160 CN2019095160W WO2020015549A1 WO 2020015549 A1 WO2020015549 A1 WO 2020015549A1 CN 2019095160 W CN2019095160 W CN 2019095160W WO 2020015549 A1 WO2020015549 A1 WO 2020015549A1
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- 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
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- the present invention relates to the technical field of motors, and more particularly, the present invention relates to a linear motor.
- a linear motor does not require an intermediate drive mechanism, and has the advantages of high accuracy, high dynamic response, and high rigidity.
- the mechanical loss is extremely small, and the maintenance requirement of the linear motor is low, so it has high reliability and long life. Therefore, the application of linear motors is becoming more and more widespread.
- a linear motor with an iron core is provided with an iron core in a coil group, which is widely used in high-speed CNC machining centers, vertical lifting conveyor systems, high-speed ground transportation systems, reciprocating air compressors and other fields, which can provide faster Responsiveness, large load, and rigidity can be guaranteed during machine processing or thrust application.
- An object of the present invention is to provide a new technical solution for a linear motor.
- a linear motor comprising a U-shaped groove-shaped component, the U-shaped groove-shaped component including a U-shaped groove structure and oppositely arranged on two sides of the U-shaped groove structure Oblique pole permanent magnets inside the wall;
- the T-shaped component includes a coil group with an iron core located between two rows of the permanent magnets;
- the U-shaped slot-shaped component is a mover, and the T-shaped component is a stator; or, the U-shaped slot-shaped component is a stator, and the T-shaped component is a mover.
- the permanent magnets on the two side walls are arranged symmetrically.
- the permanent magnets on the two side walls are arranged in parallel.
- the permanent magnets are arranged side by side on two side walls.
- the U-shaped groove structure is a magnetically permeable material.
- the T-shaped component includes a fixing plate, and the coil group is disposed on the same side of the fixing plate.
- a clamping portion extends from both ends of the fixing plate in the sliding direction, and the coil group is disposed between the two clamping portions.
- the coil group includes a through hole, and the iron core is disposed in the through hole.
- potting glue is coated on the coil group.
- the movers are provided in multiple groups and are arranged in parallel on the same stator.
- One technical effect of the present invention is that the cogging effect of the linear motor can be reduced.
- FIG. 1 is a schematic diagram of a linear motor provided by a specific embodiment of the present invention.
- FIG. 2 is a schematic diagram of a U-shaped groove-shaped component provided by a specific embodiment of the present invention.
- FIG. 3 is an exploded view of a U-shaped groove-shaped component provided by a specific embodiment of the present invention.
- FIG. 4 is a schematic diagram of a T-shaped component provided by a specific embodiment of the present invention.
- FIG. 5 is an exploded view of a T-shaped component provided by a specific embodiment of the present invention.
- FIG. 6 is a schematic diagram of a T-shaped component provided by a specific embodiment of the present invention.
- FIG. 7 is a schematic diagram of a linear motor provided by a specific embodiment of the present invention.
- FIG. 8 is a schematic diagram of a linear motor provided by a specific embodiment of the present invention.
- 1-U-shaped slot-shaped component 11-upper plate, 12-side plate, 13-lower plate, 14-permanent magnet, 2-T-shaped component, 21-fixing plate, 22-coil group, 23-iron core, 24 -Clamping section.
- any specific value should be construed as exemplary only and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.
- the present invention provides a linear motor, as shown in FIG. 1, including a U-shaped groove-shaped component 1 and a T-shaped component 2.
- the U-shaped groove-shaped component 1 includes a U-shaped groove structure and oblique pole permanent magnets 14 which are oppositely arranged inside two side walls of the U-shaped groove structure.
- the U-shaped groove structure includes a side plate 12 and an upper plate 11 and a lower plate 13 provided on the same side of the side plate 12.
- the upper plate 11 and the lower plate 13 form a side wall of the side plate 12, and the permanent magnet 14 is provided on the upper plate. 11 and the inner wall of the lower plate 13.
- the T-shaped component 2 includes a coil group 22 located between two rows of permanent magnets 14. A through hole is provided in the coil group 22, and an iron core 23 is provided in the through hole.
- the T-shaped component 2 further includes a fixing plate 21, and both ends of the fixing plate 21 in the sliding direction are provided with clamping portions 24 for fixing the coil group 22, and the coil group 22 is fixed in front of the clamping portion 24.
- the fixing plate 21 is made of a non-magnetic material.
- the coil group 22 When the coil group 22 is energized, a magnetic field force is generated between the U-shaped slot-shaped component 1 and the T-shaped component 2 and can drive the relative movement of the two.
- the T-shaped component 2 when the U-shaped slot-shaped component 1 is used as a stator of the motor, the T-shaped component 2 is a mover of a linear motor. After the coil group 22 is energized, the T-shaped component 2 can slide in the U-shaped slot component 1 so that it can be slid. Connect with other objects and drive them into motion.
- the U-shaped slot-shaped component 1 When the T-shaped component 2 is used as the stator of the linear motor, the U-shaped slot-shaped component 1 is a mover of the linear motor. After the coil group 22 is energized, the U-shaped slot-shaped component 1 can slide on the T-shaped component 2 so that it can communicate with the T-shaped component 2. Other objects connect and drive them to move.
- the wires connecting the coil group 22 need to move along with the T-shaped component 2, and a tow chain needs to be added to the wires to facilitate its movement.
- the U-shaped slot-shaped component 1 is used as the mover of the linear motor
- the T-shaped component 2 as the stator of the linear motor does not need to be moved.
- the wires connected to the coil group 22 are fixed, which can increase the service life of the wires. There is no need to add an energy chain, which avoids occupying extra space and reduces the maintenance cost of the linear motor.
- the permanent magnets 14 are provided on the upper and lower sides of the coil group 22.
- a dual magnetic circuit is formed, which increases the magnetic flux of the air gap magnetic field and further improves the magnetic field
- the utilization rate increases the thrust of the linear motor mover.
- the permanent magnet 14 is arranged on the upper plate 11 and the lower plate 13 in an oblique pole manner. In this way, the cogging effect between the iron core 23 in the coil group 22 and the permanent magnet 14 can be reduced, and the lift can be improved.
- the smoothness of the linear motor is improved.
- U-shaped slot-shaped component 1 and T-shaped component 2 can realize modular design and assembly, which is convenient for the production and assembly of linear motors. It can also reduce the difficulty of maintenance and reduce the maintenance costs of linear motors in the later stage.
- the permanent magnets 14 are rectangular and are arranged side by side on the inner wall of the upper plate 11 and the lower plate 12, and the long and short sides of each permanent magnet 14 are parallel to the long and short sides of other permanent magnets 14, so that the permanent magnets 14 The position between 14 is more compact.
- the shape and thickness of the permanent magnet 14 are not limited in the present invention, and any scheme that can achieve the same technical effect belongs to the protection scope of the present invention.
- the upper plate 11 and the lower plate 12 are arranged in parallel, and at the same time, the planes of the permanent magnets 14 on the inner wall of the upper plate 11 and the lower plate 12 are parallel to each other, so as to increase the strength of the magnetic field, thereby increasing the thrust of the linear motor mover.
- the upper plate 11 and the permanent magnets 14 on the inner side wall of the lower plate 12 are symmetrically arranged, and the positions of the upper plate 11 and the permanent magnets 14 on the inner side wall of the lower plate 12 can be completely corresponded in a symmetrical manner, so that With the same arrangement angle, the strength of the magnetic field can be increased, and the thrust of the linear motor mover can be improved.
- the effective utilization of the coil section of the coil group 22 for cutting the magnetic induction line is improved, which can reduce the end effect, reduce the end force, thereby reducing the loss of the linear motor and reducing the internal heating of the motor.
- the upper plate 11, the side plate 12, and the lower plate 13 are all magnetically conductive materials.
- the magnetic material is used for the side plate 12, which increases the magnetic path, can increase the strength of the magnetic field, and can further increase the thrust of the linear motor.
- the magnetically permeable material is iron, which is not limited in the present invention.
- a potting compound is coated on the coil group 22.
- the potting compound is used to fill the gap between the coil groups 22 and between the coil group 22 and the fixing plate 22, so that the coil group can be more stably set on the fixing plate 22.
- the potting compound has good heat dissipation ability.
- the heat generated during the operation of the coil group 22 is released in time.
- a potting compound is applied to the coil group 22, which can also protect the coil 22, avoid collision damage during assembly and maintenance, and prevent dust and liquid from entering the coil group 22. Its performance is affected.
- the potting compound is an epoxy potting compound.
- the U-shaped slot-shaped component 1 is a stator
- the T-shaped component 2 is a mover
- three T-shaped components 2 are provided. Specifically, after the coil groups 22 of the three T components 2 are energized, they can slide on the U-shaped groove-shaped component 1. In addition, by changing the current in the coil groups 22 of the three T components 2, The sliding speed and thrust of each T component 2 are different, and can be selected according to actual conditions in actual applications to meet more needs.
- the three T-components 2 can be connected with objects to drive them to move, so that multiple objects can be driven and moved at the same time to improve work efficiency. At the same time, the three T-components 2 can be connected to one object and driven at the same time. Increase thrust.
- the U-shaped slot-shaped component 1 is a mover
- the T-shaped component 2 is a stator
- three U-shaped slot-shaped components 1 are provided. Specifically, all three U-shaped groove-shaped components 1 can slide on the U-shaped groove-shaped component 1.
- the sliding speed and thrust of the component 1 are different, and can be selected according to actual conditions in actual applications to meet more requirements.
- the three U-shaped slot-shaped components 1 can be connected with objects to drive them to move, so that multiple objects can be driven and moved at the same time to improve work efficiency.
- the three U-shaped slot-shaped components 1 can be connected to one at the same time. Drive on the object to increase thrust.
- the U-shaped slot-shaped component 1 is used as the mover, the T-shaped component 2 as the stator of the linear motor does not need to be moved.
- the wires connecting the coil group 22 are fixed and only one set is provided, which can increase the service life of the wires , Reduce production costs, at the same time, do not need to add towline, avoid taking up additional space, and reduce the maintenance costs of linear motors.
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Abstract
一种直线电机,包括U形槽状组件(1),所述U形槽状组件(1)包括U形槽结构和相对排列在所述U形槽结构的两个侧壁内侧的斜极永磁体(14);以及T形组件(2),所述T形组件(2)包括位于两排所述永磁体(14)之间且具有铁芯(23)的线圈组(22);其中所述U形槽状组件(1)为动子,所述T形组件(2)为定子;或者,所述U形槽状组件(1)为定子,所述T形组件(2)为动子。该方案所达到的一个技术效果是,能够降低直线电机的齿槽效应。
Description
本发明涉及电机技术领域,更具体地,本发明涉及一种直线电机。
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,因而可靠性高,寿命长。因此,直线电机的应用也越来越广泛。
通常,带有铁芯的直线电机是在线圈组中设置铁芯,其广泛应用于高速数控加工中心、垂直升降输送***、高速地面运输***、往复式空气压缩机等领域,可以提供较快的响应能力,较大的负载,并在机床加工或施加推力过程中能够保证刚度。
这类直线电机的应用中,由于端部效应和齿槽效应共同影响,使得此类电机存在推力波动大的缺点。因此,需要提供一种新的技术方案,来优化这类直线电机的性能。
发明内容
本发明的一个目的是提供一种直线电机的新的技术方案。
根据本发明的一个方面,提供一种直线电机,其特征在于,包括U形槽状组件,所述U形槽状组件包括U形槽结构和相对排列在所述U形槽结构的两个侧壁内侧的斜极永磁体;以及
T形组件,所述T形组件包括位于两排所述永磁体之间且具有铁芯的线圈组;其中
所述U形槽状组件为动子,所述T形组件为定子;或者,所述U形槽状组件为定子,所述T形组件为动子。
可选地,两个侧壁上的所述永磁体对称设置。
可选地,两个侧壁上的所述永磁体平行设置。
可选地,所述永磁体并列设置在两个侧壁上。
可选地,所述U形槽结构为导磁材料。
可选地,所述T形组件包括固定板,所述线圈组设置在所述固定板的同侧。
可选地,所述固定板的沿滑动方向的两端延伸出有夹持部,所述线圈组设置在两个所述夹持部之间。
可选地,所述线圈组包括通孔,所述铁芯设置在所述通孔中。
可选地,所述线圈组上涂设有灌封胶。
可选地,所述动子设置有多组,并且并列设置在同一个所述定子上。
本发明的一个技术效果在于,能够降低直线电机的齿槽效应。
通过以下参照附图对本发明的示例性实施例的详细描述,本发明的其它特征及其优点将会变得清楚。
构成说明书的一部分的附图描述了本发明的实施例,并且连同说明书一起用于解释本发明的原理。
图1是本发明的具体实施例提供的直线电机的示意图;
图2是本发明的具体实施例提供的U形槽状组件的示意图;
图3是本发明的具体实施例提供的U形槽状组件的***图;
图4是本发明的具体实施例提供的T形组件的示意图;
图5是本发明的具体实施例提供的T形组件的***图;
图6是本发明的具体实施例提供的T形组件的示意图;
图7是本发明的具体实施例提供的直线电机的示意图;
图8是本发明的具体实施例提供的直线电机的示意图。
其中:
1-U形槽状组件,11-上板,12-侧板,13-下板,14-永磁体,2-T形组件,21-固定板,22-线圈组,23-铁芯,24-夹持部。
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到:除非另外具体说明,否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的,决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术和设备可能不作详细讨论,但在适当情况下,所述技术和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中,任何具体值应被解释为仅仅是示例性的,而不是作为限制。因此,示例性实施例的其它例子可以具有不同的值。
应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步讨论。
本发明提供了一种直线电机,如图1所示,包括U形槽状组件1和T形组件2。
具体地,如图2-3所示,U形槽状组件1包括U形槽结构和相对排列在U形槽结构的两个侧壁内侧的的斜极永磁体14。其中,U形槽结构包括侧板12,以及设置在侧板12同侧的上板11和下板13,上板11和下板13形成侧板12的侧壁,永磁体14设置在上板11和下板13的内侧壁上。
如图4-5所示,T形组件2包括位于两排永磁体14之间的线圈组22,线圈组22中设置有通孔,通孔中设置有铁芯23。具体地,T形组件2还包括固定板21,固定板21沿滑动方向的两端设置有用于固定线圈组22的夹持部24,线圈组22固定在夹持部24之前。其中,固定板21为非导磁材料。
当线圈组22通电后,U形槽状组件1与T形组件2之间产生磁场作用力,并能够驱动两者相对运动。其中,当U形槽状组件1作为电机的定子时,T形组件2为直线电机的动子,线圈组22通电后,T形组件2能够在U形槽状组件1中进行滑动,从而可以与其他物体连接,并驱动其进行运 动。当T形组件2作为直线电机的定子时,U形槽状组件1为直线电机的动子,线圈组22通电后,U形槽状组件1能够在T形组件2上进行滑动,从而可以与其他物体连接,并驱动其进行运动。
通常,当T形组件2作为直线电机的动子时,连接线圈组22的导线需要随着T形组件2一起移动,导线上需要增设拖链方便其移动。相反,当U形槽状组件1作为直线电机的动子时,T形组件2作为直线电机的定子不需要进行移动,连接线圈组22的导线固定不动,能够增加导线的使用寿命,同时,也不需要增设拖链,避免了占用额外空间,降低了直线电机的维护成本。
本发明提供的直线电机,线圈组22的上下两侧均设置有永磁体14,通过在线圈组22中增设铁芯23,形成双磁路,提高了气隙磁场的磁通量,进而提高了磁场的利用率,增加了直线电机动子的推力。同时,永磁铁14采用斜极方式设置在上板11和下板13上,采用这种方式,能够降低线圈组22中的铁芯23带来的与永磁体14之间的齿槽效应,提升了直线电机运行时的平稳性。
此外,U形槽状组件1和T形组件2能够实现模块化设计和组装,便于直线电机的生产和组装,也能够降低直线电机后期的维护难度,减少维护成本。
具体地,永磁体14呈矩形,并列设置在上板11与下板12内侧壁上,每个永磁体14长边和短边与其他永磁体14长边和短边均互相平行,使永磁体14之间的位置更加紧凑。本发明对永磁体14的形状和厚度不做限制,凡是能达到同样技术效果的方案,都属于本发明的保护范围。
进一步地,上板11与下板12平行设置,同时,上板11与下板12内侧壁上的永磁体14所在的平面相互平行,以提高磁场的强度,进而增加直线电机动子的推力。
进一步地,上板11与下板12内侧壁上的永磁体14对称设置,采用对称设置的方式,能够使上板11与下板12内侧壁上的永磁体14的位置完全对应起来,使其具有同样的布置角度,能够提高磁场的强度,进而提高直线电机动子的推力。此外,采用对称结构,线圈组22用于切割磁感线的 线圈段的有效利用率提高,能够降低端部效应,减小端部力,进而降低直线电机的损耗,减少电机内部的发热。
具体地,上板11、侧板12及下板13均为导磁材料,侧板12采用导磁材料,增加了磁通路,能够提高磁场的强度,进一步可以增加直线电机的推力。例如,导磁材料为铁,本发明对此不做限制。
如图6所示,线圈组22上涂设有灌封胶。采用灌封胶,能够填充线圈组22之间和线圈组22与固定板22之间的缝隙,能够使线圈组更加稳固的设置在固定板22上,同时,灌封胶具有良好的散热能力,进而使线圈组22工作时产生的热量及时散出。此外,在圈组22上涂设有灌封胶,也能起到保护线圈22的作用,避免其在组装和维护过程中收到磕碰损坏,也能避免灰尘和液体等进入线圈组22中对其性能造成影响。可选地,灌封胶为环氧树脂灌封胶。
如图7所示,U形槽状组件1为定子,T形组件2为动子,且T形组件2设置有三个。具体地,三个T组件2的线圈组22通电后其都能够在U形槽状组件1上进行滑动,此外,通过改变三个T组件2的线圈组22中的电流,进而可以实现对三个T组件2的滑动速度和推力的不同,在实际应用中可以根据实际情况进行选择,以满足更多的需求。三个T组件2可以分别连接有物体,以驱动他们进行运动,实现多个物体同时驱动移动的目的,提高工作效率,同时,三个T组件2也可以同时连接在一个物体上进行驱动,以增大推力。
如图8所示,U形槽状组件1为动子,T形组件2为定子,且U形槽状组件1设置有三个。具体地,三个U形槽状组件1都能够在U形槽状组件1上进行滑动,此外,通过改变三个U形槽状组件1的磁场强度,进而可以实现对三个U形槽状组件1的滑动速度和推力的不同,在实际应用中可以根据实际情况进行选择,以满足更多的需求。三个U形槽状组件1可以分别连接有物体,以驱动他们进行运动,实现多个物体同时驱动移动的目的,提高工作效率,同时,三个U形槽状组件1也可以同时连接在一个物体上进行驱动,以增大推力。此外,采用U形槽状组件1为动子时,T形组件2作为直线电机的定子不需要进行移动,连接线圈组22的导线固定 不动,且只设置有一组,能够增加导线的使用寿命,减少生产成本,同时,也不需要增设拖链,避免了占用额外空间,降低了直线电机的维护成本。
本领域技术人员还可以选择设置两个、四个或更多的动子,本发明对此不做限制,这些动子数量上的变换,都属于本发明的保护范围。
虽然已经通过示例对本发明的一些特定实施例进行了详细说明,但是本领域的技术人员应该理解,以上示例仅是为了进行说明,而不是为了限制本发明的范围。本领域的技术人员应该理解,可在不脱离本发明的范围和精神的情况下,对以上实施例进行修改。本发明的范围由所附权利要求来限定。
Claims (10)
- 一种直线电机,其特征在于,包括U形槽状组件,所述U形槽状组件包括U形槽结构和相对排列在所述U形槽结构的两个侧壁内侧的斜极永磁体;以及T形组件,所述T形组件包括位于两排所述永磁体之间且具有铁芯的线圈组;其中所述U形槽状组件为动子,所述T形组件为定子;或者,所述U形槽状组件为定子,所述T形组件为动子。
- 根据权利要求1所述的直线电机,其特征在于,两个侧壁上的所述永磁体对称设置。
- 根据权利要求1所述的直线电机,其特征在于,两个侧壁上的所述永磁体平行设置。
- 根据权利要求1所述的直线电机,其特征在于,所述永磁体并列设置在两个侧壁上。
- 根据权利要求1所述的直线电机,其特征在于,所述U形槽结构为导磁材料。
- 根据权利要求1至5任一所述的直线电机,其特征在于,所述T形组件包括固定板,所述线圈组设置在所述固定板的同侧。
- 根据权利要求6所述的直线电机,其特征在于,所述固定板沿滑动方向的两端延伸出有夹持部,所述线圈组设置在两个所述夹持部之间。
- 根据权利要求1所述的直线电机,其特征在于,所述线圈组包括通孔,所述铁芯设置在所述通孔中。
- 根据权利要求1所述的直线电机,其特征在于,所述线圈组上涂设有灌封胶。
- 根据权利要求1所述的直线电机,其特征在于,所述动子设置有多组,并且并列设置在同一个所述定子上。
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