U-shaped linear motor module and motion platform

Abstract

The utility model relates to the technical field of motors, and discloses a U-shaped linear motor module and a motion platform. The U-shaped linear motor module comprises a mover assembly which comprises a mover support with a U-shaped groove and an electromagnetic coil arranged in the U-shaped groove; and the stator assembly is inserted in the U-shaped groove and comprises a first magnetic track, a second magnetic track and a linear strip-shaped stator mounting plate, and the first magnetic track and the second magnetic track are symmetrically fixed on two opposite side surfaces of the stator mounting plate relative to the stator mounting plate, so that the stator assembly generates a magnetic field to drive the mover assembly to do linear motion along the stator mounting plate. When the first magnetic track and the second magnetic track are fixed, a specific assembly tool is not needed, assembly operation is easy, and installation operation is very simple. And meanwhile, a realization condition is provided for selecting a coil with an iron core for an electromagnetic coil of the mover assembly, so that the operation stability of the mover assembly cannot be influenced by the magnetic attraction force of the stator assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a U-shaped linear motor module and a motion platform. Background Art

[0002] The U-slot linear motor is referred to as a U-type linear motor. The stator of the U-type linear motor is a U-shaped structure and includes two parallel magnetic rails between metal plates and facing the coil mover. The mover is supported between the two magnetic rails by a guide rail system. The existing U-type linear motor has the following shortcomings: the stator is difficult to assemble and it is difficult to ensure assembly accuracy. When assembling the stator of the U-type linear motor, it is difficult to assemble because the two magnetic rails need to be fixed in parallel on the two opposite inner sides of the U-shaped metal plate. Usually, the assembly requires the use of tooling to complete the assembly, resulting in low assembly efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art and provides a U-shaped linear motor module and a motion platform that are easy to assemble and run smoothly.

[0004] The utility model proposes a U-shaped linear motor module, which includes: a mover assembly, including a mover bracket with a U-shaped groove and an electromagnetic coil arranged in the U-shaped groove; a stator assembly, inserted in the U-shaped groove, including a first magnetic rail, a second magnetic rail and a stator mounting plate in the form of a straight bar, the first magnetic rail and the second magnetic rail being symmetrically fixed to two opposite sides of the stator mounting plate relative to the stator mounting plate, so that the magnetic field generated by the stator assembly drives the mover assembly to move linearly along the stator mounting plate.

[0005] In some preferred embodiments, the electromagnetic coil includes a first movable coil and a second movable coil respectively arranged on two opposite inner walls of the U-shaped groove, the first movable coil is spaced apart from the first magnetic rail, and the second movable coil is spaced apart from the second magnetic rail.

[0006] In some preferred embodiments, the U-shaped linear motor module further includes a motor mounting seat, and the stator mounting plate is fixed on the motor mounting seat; a motor baffle is provided on the motor mounting seat and is spaced apart from the stator mounting plate.

[0007] In some preferred embodiments, the number of mover assemblies, stator assemblies and motor mounting seats is 2, and each motor mounting seat is respectively provided with a mover assembly and a stator assembly; the two motor mounting seats are arranged in parallel and spaced apart, the stator assembly is located on the outer side of the motor baffle, and the two mover brackets are fixedly connected by a beam frame.

[0008] In some preferred embodiments, both ends of the beam are connected to the motor baffles of the two motor mounting seats by sliding fit.

[0009] In some preferred embodiments, the top wall and the inner side wall of the motor baffle are respectively provided with a first sliding fitting surface and a second sliding fitting surface which are flat planes.

[0010] In some preferred embodiments, both ends of the beam are provided with a first air floating block facing the first sliding fitting surface and a second air floating block facing the second sliding fitting surface.

[0011] In some preferred embodiments, the first air floating block and the second air floating block are staggered.

[0012] In some preferred embodiments, anti-collision blocks are provided at both ends of the motor baffle.

[0013] Correspondingly, the present invention also discloses a motion platform, which includes the linear motor module.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By improving the structure of the stator assembly, the utility model symmetrically secures the first and second magnetic rails to opposite sides of the stator mounting plate. This eliminates the need for specialized assembly tooling, facilitating easy assembly and simplifying installation. Furthermore, based on the optimized structure of the stator assembly, the mover assembly is designed with a U-shaped slot, facilitating the use of an iron-core coil for the electromagnetic coil of the mover assembly. When an iron-core coil is used for the electromagnetic coil, the iron-core coil generates magnetic attraction forces of equal magnitude but opposite directions with the symmetrically arranged first and second magnetic rails, preventing the mover assembly from experiencing operational smoothness impacted by the magnetic attraction of the stator assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the stator assembly of the U-shaped linear motor module.

[0017] Figure 2 This is a schematic diagram of the main structure of the stator assembly of the U-shaped linear motor module.

[0018] Figure 3 It is a schematic diagram of a three-dimensional structure in which two movable components are fixedly connected by a beam frame.

[0019] Figure 4 It is a three-dimensional structural diagram of an embodiment of a U-shaped linear motor module.

[0020] Figure 5 It is a schematic diagram of the main structure of an embodiment of a U-shaped linear motor module. DETAILED DESCRIPTION

[0021] To further illustrate the technical means and effects employed by this application to achieve its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of this application is provided in conjunction with the accompanying drawings and preferred embodiments. In the following description, different references to "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0022] The U-shaped linear motor module (abbreviated as "linear motor" or "linear motor module") disclosed in the present invention includes a stator assembly and a mover assembly capable of performing linear motion relative to the stator assembly.

[0023] Combine Figure 1-Figure 2 As shown, the stator assembly of the U-shaped linear motor module includes a first magnetic rail 3, a second magnetic rail 4 and a straight stator mounting plate 2. The first magnetic rail 3 and the second magnetic rail 4 are symmetrically fixed on two opposite sides of the stator mounting plate 2.

[0024] Since the two opposite sides of the stator mounting plate 2 are exposed, the first magnetic rail 3 and the second magnetic rail 4 are symmetrically fixed on the two opposite sides of the stator mounting plate 2, which is easy to assemble and does not require the use of special assembly tools. The installation operation is very simple.

[0025] Combine Figure 3 As shown, the U-shaped linear motor module's rotor assembly includes a rotor bracket 51 with a U-shaped slot and an electromagnetic coil disposed within the slot. The stator assembly is inserted within the slot. When current flows through the electromagnetic coil, the magnetic field generated by the stator assembly interacts with the magnetic field generated by the stator assembly. This magnetic field drives the rotor assembly to move linearly along the stator mounting plate 2.

[0026] The electromagnetic coil specifically includes a first mover coil 52 and a second mover coil 53 respectively arranged on two opposite inner walls of the U-shaped groove of the mover bracket 51. The first mover coil 52 is spaced apart from the first magnetic rail 3, and the second mover coil 53 is spaced apart from the second magnetic rail 4.

[0027] The utility model optimizes the structure of the mover assembly and the stator assembly so that the first mover coil 52 and the second mover coil 53 can be selected as coils with iron cores. At this time, the first magnetic attraction force generated by the first magnetic rail 3 on the iron core of the first mover coil 52 and the second magnetic attraction force generated by the second magnetic rail 4 on the second mover coil 53 are the same in magnitude and opposite in direction. The force of the mover assembly is balanced to ensure the smooth operation of the linear motor module. At the same time, since magnetic rails are installed on both sides of the stator mounting plate 2, the resultant force of the magnetic rails on both sides on the stator mounting plate 2 is balanced, so the structural strength and thickness requirements of the stator mounting plate are greatly reduced.

[0028] Furthermore, when the first mover coil 52 and the second mover coil 53 are coils with iron cores, the good magnetic conductivity and magnetic saturation performance of the iron core are utilized to make the magnetic field distribution more uniform and stable, thereby improving the efficiency, load capacity and running smoothness of the linear motor module.

[0029] Further integration Figure 1-Figure 2 As shown, the linear motor module also includes a motor mount 1, to which a stator mounting plate 2 is fixed. For example, the stator mounting plate 2 has an inverted T-shaped cross-section and includes a base plate for fixed connection to the motor mount 1 and a mounting plate body disposed perpendicular to the base plate. During installation, the first magnetic rail 3 and the second magnetic rail 4 are first symmetrically fixed to opposite sides of the mounting plate body. The base plate is then secured to the motor mount 1 using screws or other means.

[0030] Furthermore, a motor baffle 11 is provided on the motor mounting base 1 and is spaced apart from the stator mounting plate 2. Anti-collision blocks 19 are provided at both ends of the motor baffle 11 to provide position limiting protection when the mover assembly moves linearly relative to the stator mounting plate 2.

[0031] Further integration Figure 3-Figure 5 As shown, in some preferred embodiments, the number of mover assemblies, stator assemblies and motor mounting bases 1 is 2, and a mover assembly and a stator assembly are respectively provided on each motor mounting base 1; the two motor mounting bases 1 are arranged in parallel and spaced apart, the stator assembly is located on the outer side of the motor baffle 11, and the two mover brackets 2 are fixedly connected by a beam frame 6.

[0032] The two mover assemblies are rigidly connected at both ends of the beam 6, allowing them to move linearly in sync with the two stator assemblies. The cables connecting the two mover assemblies can also be routed through the beam 6, eliminating the need for drag chain cables for each mover assembly and simplifying wiring.

[0033] In order to reduce friction when the mover assembly moves linearly relative to the stator mounting plate 2, thereby ensuring smoother and more stable movement of the linear motor module, the ends of the beam 6 are respectively connected to the motor baffles 11 of the two motor mounting bases 1 by sliding engagement. For example, the ends of the beam 6 and the motor baffles 11 may be slidably engaged by means of slide rails, ball bearings, or the like.

[0034] In order to make the linear motor module have higher motion accuracy and be applicable to high-end precision manufacturing and other usage scenarios with high requirements for motion accuracy, air-floating sliding cooperation is adopted between the two ends of the beam 6 and the motor baffle 11, so that the two movable components can achieve frictionless and vibration-free smooth movement relative to the motor mounting base 1 through the beam 6 based on the gas dynamic and static pressure effect, thereby allowing the linear motor module to obtain higher linear motion accuracy.

[0035] Furthermore, the use of an air-bearing sliding fit requires less manufacturing precision for the motor baffles 11, achieving higher guiding accuracy with relatively low manufacturing precision. Specifically, a first sliding fit surface 12 and a second sliding fit surface 13 are machined into the top and inner side walls of each motor baffle 11 to provide an air-bearing sliding fit with the ends of the beam 6.

[0036] Correspondingly, both ends of the beam 6 are provided with a first air floating block 71 facing the first sliding mating surface 12 and a second air floating block 72 facing the second sliding mating surface 13 . Both the first air floating block 71 and the second air floating block 72 are connected to an external air source.

[0037] The first air-floating block 71 is fixed to the bottom side surface of the end of the beam 6, generating a first air-floating force pointing longitudinally downward on the first sliding mating surface 12 of the motor baffle 11. The first air-floating forces at both ends of the beam 6 are used to form a downward air-floating force, so that the beam 6 and the two mover assemblies form a suspended fit relative to the motor baffle 11.

[0038] The second air float block 72 is fixed to the end side surface of the end of the beam 6, and generates a second air float force axially outward from the transverse center of the beam 6 on the second sliding fitting surface 13 of the motor baffle 11, so that a suspended fit is formed between the end side surface of the beam 6 and the second sliding fitting surface 13 of the motor baffle 11, avoiding collision between the end side surface of the beam 6 and the second sliding fitting surface 13 of the motor baffle 11 during movement, ensuring that the linear motion of the linear motor module is smoother.

[0039] In addition, the first air floating block 71 and the second air floating block 72 are staggered to avoid interference between them and affecting the air floating effect.

[0040] The utility model also discloses a motion platform, which adopts the aforementioned U-shaped linear motor module. The U-shaped linear motor module can provide linear motion with smooth operation and high operation precision.

[0041] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A U-shaped linear motor module, characterized in that: include: A mover assembly includes a mover bracket having a U-shaped groove and an electromagnetic coil arranged in the U-shaped groove; The stator assembly is inserted into the U-shaped slot and includes a first magnetic rail, a second magnetic rail and a straight stator mounting plate. The first magnetic rail and the second magnetic rail are symmetrically fixed to two opposite sides of the stator mounting plate relative to the stator mounting plate, so that the magnetic field generated by the stator assembly drives the mover assembly to move linearly along the stator mounting plate.

2. The U-shaped linear motor module according to claim 1, characterized in that: The electromagnetic coil comprises a first movable coil and a second movable coil respectively arranged on two opposite inner side walls of the U-shaped groove. The first movable coil is spaced apart from the first magnetic track, and the second movable coil is spaced apart from the second magnetic track.

3. The U-shaped linear motor module according to claim 1 or 2, characterized in that: It also includes a motor mounting seat, on which a stator mounting plate is fixed; and a motor baffle is provided on the motor mounting seat and is spaced apart from and parallel to the stator mounting plate.

4. The U-shaped linear motor module according to claim 3, characterized in that: The number of mover assemblies, stator assemblies and motor mounting seats is 2 each, and each motor mounting seat is respectively provided with a mover assembly and a stator assembly; the two motor mounting seats are arranged in parallel and spaced apart, the stator assembly is located on the outer side of the motor baffle, and the two mover brackets are fixedly connected by a beam frame.

5. The U-shaped linear motor module according to claim 4, characterized in that: The two ends of the beam frame are respectively connected with the motor baffles of the two motor mounting seats by sliding fit.

6. The U-shaped linear motor module according to claim 5, characterized in that: The top wall and the inner side wall of the motor baffle are respectively provided with a first sliding fitting surface and a second sliding fitting surface which are flat planes.

7. The U-shaped linear motor module according to claim 6, characterized in that: Both ends of the beam frame are provided with a first air floating block facing the first sliding matching surface and a second air floating block facing the second sliding matching surface.

8. The U-shaped linear motor module according to claim 7, characterized in that: The first air floating block and the second air floating block are staggered.

9. The U-shaped linear motor module according to claim 3, characterized in that: Anti-collision blocks are provided at both ends of the motor baffle.

10. A sports platform, characterized in that: Comprising the linear motor module according to any one of claims 1-9.

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