Rotor assembly and linear motor

Abstract

The utility model relates to the technical field of linear motors, and discloses a mover assembly and a linear motor, the mover assembly comprises a sliding table and a mover, the sliding table is provided with an accommodating groove, the accommodating groove is filled with the mover, and the mover and the accommodating groove are integrally formed. According to the utility model, the rotor and the accommodating groove of the sliding table are designed to be integrally formed, and the rotor and the sliding table are combined to form an integral structure, so that the assembly tolerance between the rotor and the sliding table in a traditional assembly mode is fundamentally eliminated, the assembly precision of the rotor assembly is improved, and the motion precision and reliability of the rotor assembly are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of linear motors, in particular to a mover assembly and a linear motor. Background Art

[0002] A linear motor, also known as a linear motor, linear actuator or linear motor, is a transmission device that directly converts electrical energy into linear motion without any intermediate conversion mechanism. Linear motors are widely used in various high-precision and high-response mechanical equipment and have important applications in fields such as semiconductor manufacturing, automated production lines, and precision measuring instruments.

[0003] In the current technology, a linear motor includes a mover assembly and a stator assembly. The mover assembly includes a slide table and a mover. The overall structure of the slide table and the mover is relatively complex, making assembly and maintenance difficult and affecting its motion accuracy and reliability. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a mover assembly and a linear motor to solve the technical problems of difficult assembly and maintenance of the slide table and the mover, which affect its motion accuracy and reliability.

[0005] To achieve the above purpose, the utility model provides a mover assembly, including a slide table and a mover. The slide table is provided with a receiving groove, the mover is filled in the receiving groove, and the mover and the receiving groove are integrally formed.

[0006] In the mover assembly of the present application, the mover and the receiving groove are integrally formed by casting.

[0007] In the mover assembly of the present application, the slide table is provided with a surrounding structure protruding from its surface, and the surrounding structure encloses to form the receiving groove.

[0008] In the mover assembly of the present application, the mover assembly includes a connecting member. The slide table is provided with a mounting hole facing the mover. The mounting hole communicates with the receiving groove. The connecting member is inserted into the mounting hole from the receiving groove, and the connecting member is connected to the mover in the receiving groove.

[0009] In the mover assembly of the present application, the mover assembly includes a plurality of movers. The slide table is provided with a plurality of receiving grooves. A groove is formed between any two adjacent receiving grooves. Each mover is respectively filled in each receiving groove.

[0010] In the mover assembly of the present application, the mover assembly includes four movers. The slide table is provided with four receiving grooves. The four receiving grooves are arranged in a rectangular array along the length direction and the width direction of the slide table.

[0011] In the mover assembly of the present application, the mover assembly includes a power cable, and the power cable is led out from the groove to the outside of the slide table.

[0012] In the mover assembly of the present application, the mover assembly includes a control main board. An accommodation space is formed between the four accommodation grooves, and the control main board is fixed in the accommodation space and electrically connected to the mover.

[0013] In the mover assembly of the present application, an inlet channel and an outlet channel for passing cooling water are provided inside the slide table, and a circulation pipe is provided between the inlet channel and the outlet channel for series connection.

[0014] In a second aspect, the present utility model provides a linear motor, which includes a stator assembly and the mover assembly. The stator assembly is provided with a stator, and the stator is disposed opposite to the mover.

[0015] The present utility model provides a mover assembly, and its beneficial effects are as follows:

[0016] In the present utility model, the mover and the accommodation groove of the slide table are designed to be integrally formed. The mover and the slide table are combined to form an integral structure, fundamentally eliminating the assembly tolerance between the mover and the slide table in the traditional assembly method. During the manufacturing process, the slide table is first machined, and the accommodation groove is machined on the side surface of the slide table. Then, the mover is filled in the accommodation groove and the mover and the accommodation groove are integrally formed, thus eliminating the assembly step, improving the assembly accuracy of the mover assembly, and improving the motion accuracy and reliability of the mover assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the mover assembly provided by the embodiment of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of the mover assembly provided by the embodiment of the present utility model with the mover removed;

[0020] Figure 3 It is a schematic structural diagram of the mover assembly provided by the embodiment of the present utility model from another perspective;

[0021] Figure 4 It is a schematic structural diagram of the mover assembly provided by the embodiment of the present utility model from another perspective.

[0022] The marks in the figure are as follows:

[0023] 10. Slide; 11. Receiving groove; 12. Enclosure structure; 13. Mounting hole; 14. Groove; 15. Water inlet channel; 16. Water outlet channel; 20. Rotor; 30. Power cable; 40. Control main board. Detailed implementation mode

[0024] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation mode of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. in the present invention is based on the positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0026] In the description of the present invention, it should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information can also be called the "second" information, and similarly, the "second" information can also be called the "first" information.

[0027] In the manufacturing process of traditional rotor assemblies, the rotor and the slide are often processed and formed as two independent components respectively, and then assembled. However, in the actual assembly process, due to multiple factors such as material properties, processing conditions, and environmental factors, it is inevitable to have a small tolerance accumulation between the rotor and the slide. These tolerances cause deviations in the movement trajectory of the rotor assembly, affecting the movement accuracy of the entire linear motor. Under long-term operation, these small tolerances may also cause a series of problems such as increased wear, increased vibration, and decreased positioning accuracy, ultimately weakening the reliability of the rotor assembly and shortening the service life of the linear motor.

[0028] As Figures 1 to 4 shown, the embodiment of the present invention provides a rotor assembly, including a slide 10 and a rotor 20. The slide 10 is provided with a receiving groove 11, the rotor 20 is filled in the receiving groove 11, and the rotor 20 and the receiving groove 11 are integrally formed.

[0029] Based on the above technical solution, in this embodiment, the mover 20 and the receiving groove 11 of the slide table 10 are designed to be integrally formed. The material of the mover 20 is combined with the material of the slide table 10 to form an integral structure, fundamentally eliminating the assembly tolerance between the mover 20 and the slide table 10 in the traditional assembly method. During the manufacturing process, the slide table 10 is first machined, and the receiving groove 11 is machined on the side of the slide table 10. Then, the mover 20 is filled into the receiving groove 11, and the mover 20 and the receiving groove 11 are integrally formed, thus eliminating the assembly step and improving the assembly accuracy of the mover assembly.

[0030] As an implementation manner, the mover 20 and the receiving groove 11 are integrally formed by casting.

[0031] Specifically, the slide table 10 is pre - placed in the mold, and then the material of the mover 20 is injected into the cavity of the mold so that the material of the mover 20 fully fills and closely fits within the receiving groove 11 of the slide table 10.

[0032] In this embodiment, parameters such as temperature, pressure, and speed are controlled during the casting process to ensure that the material of the mover 20 flows evenly, fully fuses, and to avoid defects such as bubbles and inclusions. By adopting the above - mentioned integral casting forming technology, the connection between the mover 20 and the slide table 10 is realized, eliminating the assembly tolerance problem in the traditional assembly method.

[0033] As an implementation manner, as Figure 2 shown, the slide table 10 is provided with a retaining structure 12 protruding from its surface, and the retaining structure 12 encloses to form the receiving groove 11.

[0034] Specifically, during the manufacturing process of the slide table 10, the retaining structure 12 is machined on the surface of the slide table 10 through precision machining techniques (such as CNC milling, laser cutting, etc.). After the slide table 10 and the retaining structure 12 are machined, the material of the mover 20 is put into the receiving groove 11 enclosed by the retaining structure 12 by casting to realize the integral formation of the mover 20 and the receiving groove 11.

[0035] In practical applications, the receiving groove 11 can be not only the retaining structure 12 protruding from the surface of the slide table 10, but also a groove structure recessed inward on the plane of the slide table 10.

[0036] As an implementation manner, the mover assembly includes a connecting piece (not shown in the drawings). The slide table 10 is provided with an installation hole 13 facing the mover 20. The installation hole 13 communicates with the receiving groove 11. The connecting piece is inserted into the installation hole 13 from the receiving groove 11, and the connecting piece is connected to the mover 20 within the receiving groove 11.

[0037] Specifically, the connecting member can be a T-shaped strip with a T-shaped structure. During the manufacturing process of the mover assembly, a T-shaped structure connecting member is adopted in this embodiment. The specific steps are as follows: First, before pouring the mover 20 material into the receiving groove 11 of the slide 10, insert the T-shaped strip into the mounting hole 13 communicating with the receiving groove 11, so that a part of the T-shaped strip is located inside the slide 10, and the other part remains in the receiving groove 11 as a connection point for subsequent pouring. Subsequently, inject the pouring material required for the mover 20 into the receiving groove 11. During the curing process, the mover 20 material will surround and wrap the part of the T-shaped strip remaining in the receiving groove 11, thereby forming an integrated connection with the T-shaped strip, and further realizing a firm connection between the mover 20 and the slide 10.

[0038] As an implementation manner, as Figure 1 and Figure 3 shown, the mover assembly includes a plurality of movers 20, the slide 10 is provided with a plurality of receiving grooves 11, a groove 14 is formed between any two adjacent receiving grooves 11, and each mover 20 is respectively filled in each receiving groove 11 in a one-to-one correspondence.

[0039] In the current technology, separating and installing a large integral mover 20 from the slide 10 results in a relatively large overall mass of the mover assembly, which not only increases the inertia of the system, affects the energy consumption of the system, but also limits the application of the mover assembly in some weight-sensitive occasions, such as aerospace, portable devices, etc.

[0040] In this embodiment, the original large integral mover 20 is divided into a plurality of small movers 20, and a groove 14 is formed between two adjacent receiving grooves 11. In contrast, without affecting the operation of the system and the overall area occupied by the mover 20, in this embodiment, the mover 20 is divided into several small-sized movers 20 arranged at intervals, which can reduce the mass of the groove 14 part to reduce the overall mass of the mover assembly.

[0041] On the other hand, in the case of high load or high-frequency operation, the heat dissipation problem is particularly prominent, resulting in a relatively high temperature rise of the system, which affects its stability and service life. The groove 14 formed between two adjacent receiving grooves 11 in this embodiment is conducive to forming natural convection to facilitate heat dissipation of the mover 20.

[0042] As an implementation manner, as Figure 1 and Figure 3 shown, the mover assembly includes four movers 20, the slide 10 is provided with four receiving grooves 11, and the four receiving grooves 11 are arranged in a rectangular array along the length direction and width direction of the slide 10.

[0043] Specifically, when designing the sliding table 10, four receiving grooves 11 are provided on its surface. Two of the receiving grooves 11 are arranged along the length direction of the sliding table 10, while the other two receiving grooves 11 are arranged along the width direction of the sliding table 10 and intersect perpendicularly with the former. This layout not only improves the space utilization rate of the sliding table 10 but also reduces the mutual interference between the movers 20. In addition, in this embodiment, the four movers 20 are respectively arranged in the four receiving grooves 11 one by one, so that the weight of the mover assembly can be evenly distributed.

[0044] As an implementation manner, as Figure 4 shown, the mover assembly includes a power cable 30, and the power cable 30 is led out from the groove 14 to the outside of the sliding table 10.

[0045] Specifically, the groove 14 formed between two adjacent receiving grooves 11 can not only form natural convection to facilitate heat dissipation of the mover 20 but also be used to arrange the power cable 30 to provide a channel for leading out the power cable 30.

[0046] In this embodiment, one end of the power cable 30 is connected to the mover 20, and the other end is led out to the outside of the sliding table 10 through the groove 14 to realize electrical connection with the power supply system. In addition, the power cable 30 led out to the outside of the sliding table 10 can be further sorted and protected by means of wiring grooves, cable bundles, etc. to improve the overall aesthetics and reliability of the system.

[0047] As an implementation manner, as Figure 2 and Figure 3 shown, the mover assembly includes a control main board 40. There is an accommodation space formed between the four receiving grooves 11, and the control main board 40 is fixed in the accommodation space and electrically connected to the mover 20.

[0048] Specifically, the mover assembly further includes a coil module, and the control main board 40 is a PCB board. During installation, the coil modules are first placed into the respective receiving grooves 11 to be integrally formed with the mover, and then the copper wires corresponding to the coil modules are welded to the PCB board in a series-parallel form, and then aggregated through the groove 14 to form a power cable 30 and led out to the outside of the sliding table 10.

[0049] In this embodiment, the control main board 40 is fixed in the accommodation space between the four receiving grooves 11, and the fixing method can adopt various methods such as screw fixing, buckle fixing or bonding fixing to ensure that the control main board 40 is firm and reliable and is not easy to loosen or fall off.

[0050] As an implementation manner, as Figure 3 and Figure 4 shown, the inside of the sliding table 10 is provided with a water inlet channel 15 and a water outlet channel 16 for introducing cooling water, and a circulation pipe is provided between the water inlet channel 15 and the water outlet channel 16 for series connection.

[0051] Specifically, in this embodiment, a water inlet channel 15 and a water outlet channel 16 are provided inside the sliding table 10. These two channels are respectively located on both sides of the sliding table 10 to facilitate the introduction and discharge of cooling water. During the operation of the system, after being cooled by an external cooling device, the cooling water enters the inside of the sliding table 10 through the water inlet channel 15. When flowing, the cooling water absorbs the heat inside the sliding table 10 and heats up. The heated cooling water is discharged from the sliding table 10 through the water outlet channel 16 and enters the external cooling device again for cooling treatment, forming a closed circulation path. Compared with the traditional external water cooling system, this embodiment can achieve more efficient internal heat dissipation, improve the heat dissipation performance and stability of the system, and thus extend the service life of the motor.

[0052] In a second aspect, an embodiment of the present invention provides a linear motor, which includes a stator assembly and a mover assembly. The stator assembly is provided with a stator, and the stator is disposed opposite to the mover 20.

[0053] Specifically, the stator assembly includes a stator body and a stator disposed on the stator body. The stator body can be made of non-magnetic material. The stator includes windings (such as copper wire windings) and permanent magnets (such as neodymium iron boron permanent magnets). Since the stator is disposed opposite to the mover 20, when the windings are energized to generate a magnetic field, it will interact with the magnetic field of the permanent magnet, thereby driving the mover 20 to move.

[0054] In practical applications, through the optimized relative layout of the stator assembly and the mover assembly and the magnetic field design, the linear motor structure design realizes the efficient utilization of the magnetic field and energy conversion. Compared with the traditional linear motor, the linear motor has higher operating efficiency and performance stability.

[0055] It should be understood that the term "and / or" used in the specification and appended claims of the present invention refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations. It should be noted that in this article, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or system including the element.

[0056] The serial numbers of the above embodiments of the present utility model are only for description and do not represent the superiority or inferiority of the embodiments. The above is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A mover component, characterized in that, It includes a slide table and a mover. The slide table is provided with a receiving groove. The mover includes a mover material and a coil module. The coil module is arranged in the receiving groove, and the mover material is filled in the receiving groove so that the mover and the receiving groove are integrally formed.

2. The mover assembly according to claim 1, wherein The mover material and the receiving groove are integrally formed by casting.

3. The mover assembly according to claim 1, characterized in that, The slide table is provided with a surrounding structure protruding from its surface, and the surrounding structure encloses to form the receiving groove.

4. The mover assembly according to claim 2, characterized in that The mover assembly includes a connecting piece. The slide table is provided with a mounting hole facing the mover. The mounting hole communicates with the receiving groove. The connecting piece is inserted into the mounting hole from the receiving groove, and the connecting piece is connected to the mover in the receiving groove.

5. The mover assembly according to claim 1, wherein The mover assembly includes a plurality of the movers. The slide table is provided with a plurality of the receiving grooves. A groove is formed between any two adjacent receiving grooves, and each mover is respectively filled in each receiving groove.

6. The mover assembly according to claim 5, characterized in that, The mover assembly includes four movers. The slide table is provided with four receiving grooves, and the four receiving grooves are arranged in a rectangular array along the length direction and the width direction of the slide table.

7. The mover assembly according to claim 6, wherein The mover assembly includes a power cable, and the power cable is led out from the groove to the outside of the slide table.

8. The mover assembly according to claim 7, wherein, The mover assembly includes a control main board. A receiving space is formed between the four receiving grooves, and the control main board is fixed in the receiving space and electrically connected to the mover.

9. The mover assembly according to claim 1, characterized in that, An inlet channel and an outlet channel for passing cooling water are provided inside the slide table, and a circulation pipe is provided between the inlet channel and the outlet channel for series connection.

10. A linear motor, characterized in that it includes a stator assembly and the mover assembly according to any one of claims 1 to 9. The stator assembly is provided with a stator, and the stator is arranged opposite to the mover.

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