Universal motor stator hot-jacket tool and assembling method thereof

Abstract

The application relates to the technical field of motor assembly, in particular to a universal motor stator hot-joint tool and an assembly method thereof. The universal motor stator hot-joint tool comprises a base, a clamping mechanism and a positioning mechanism. The base is provided with a mounting plate. The clamping mechanism is arranged on the base and is used for clamping and fixing the motor stator. The positioning mechanism is connected with the mounting plate and is used for ensuring the accurate positioning of the stator in the shell. Through the cooperation of the clamping mechanism and the positioning mechanism, the motor stator can be accurately fixed, the accurate cooperation of the motor stator and the shell during the hot-joint process can be ensured, the stator position deviation is avoided, the assembly precision is improved, the adjusting groove on the mounting plate and the adjusting function of the clamping arm make the tool capable of adapting to motor stators of different sizes and shapes, the universality of the tool is enhanced, the tool can adapt to various types of motors, the correct position of the stator in the shell is ensured through the positioning of multiple positioning plates, and the mispositioning and deviation during the assembly process are avoided.

Description

Technical Field

[0001] This invention relates to the field of motor assembly technology, and in particular to a general-purpose motor stator heat fitting tool and its assembly method. Background Technology

[0002] Motor assembly is one of the main processes in motor production. The stator assembly process in motor assembly commonly uses a heat-shrink fitting process. This process utilizes the principle of thermal expansion and contraction, where the housing expands upon heating and then cools, causing the inner hole of the housing to contract and enclose the stator. In stator assembly, the use of a heat-shrink fitting process refers to assembling the stator into the motor housing.

[0003] The thermal fitting of the motor stator and housing is a critical step in motor manufacturing, and its assembly accuracy directly affects the motor's operating performance and service life. Traditional methods for thermal fitting of motor stators typically require a thermal fitting fixture of a corresponding size for each type of aluminum-cased motor. This results in problems such as low assembly accuracy, stress concentration, and deformation. Furthermore, these methods are often designed for specific types of motors, lacking versatility and failing to meet the assembly requirements of motor stators and housings of various specifications and models. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of low assembly accuracy, stress concentration, and deformation caused by the traditional hot-fitting method for motor stators in the prior art, which usually requires a hot-fitting tool of a corresponding size for each type of aluminum-cased motor. The invention provides a universal hot-fitting tool for motor stators that can accurately fix the motor stator through the cooperation of clamping and positioning mechanisms, and ensure its precise fit with the housing during the hot-fitting process, thereby avoiding stator position deviation and improving assembly accuracy.

[0005] To achieve the above objectives, the present invention proposes a universal motor stator heat fitting fixture, comprising a base, a clamping mechanism, and a positioning mechanism. The base is provided with a mounting plate, the clamping mechanism is disposed on the base, and the clamping mechanism is used to clamp and fix the motor stator. The positioning mechanism is connected to the mounting plate and is used to ensure the accurate positioning of the stator within the housing.

[0006] As a further description of the above technical solution: the mounting plate includes multiple fixing plates, the fixing plates are provided with adjustment grooves, and multiple mounting holes are provided at equal intervals on both sides of the fixing plates, the mounting holes being located on both sides of the adjustment grooves.

[0007] As a further description of the above technical solution: the clamping mechanism includes a drive assembly, which is connected to a plurality of clamping arms, and the clamping arms can move within an adjustment groove.

[0008] As a further description of the above technical solution: the drive assembly includes a protective shell, and a plurality of electric telescopic rods are provided inside the protective shell, with one end of each electric telescopic rod connected to a clamping arm.

[0009] As a further description of the above technical solution: the positioning mechanism includes multiple base plates and multiple positioning plates. The lower end of the positioning plate is connected to the base plate. The base plate has an elongated hole, which is detachably connected to the mounting hole by a first bolt.

[0010] As a further description of the above technical solution: the positioning plate is an arc-shaped plate, and the number of positioning plates is the same as the number of clamping arms.

[0011] As a further description of the above technical solution: the clamping arm is provided with a threaded hole, and an adjusting stud is threadedly connected to the threaded hole.

[0012] As a further description of the above technical solution: the mounting plate is detachably connected to the base by a second bolt, and the base is connected to a support leg.

[0013] A general-purpose motor stator heat-shrink fitting assembly method includes:

[0014] S1. Use an external heating device to heat the casing to a predetermined temperature;

[0015] S2. Adjust the clamping and positioning mechanisms of the tooling fixture according to the size and shape of the motor stator;

[0016] S3. Place the preheated housing on the tooling fixture, and then gently place the stator into the housing, ensuring that the axis of the stator coincides with that of the housing.

[0017] S4. The clamping mechanism of the tooling fixture is used to fix the stator in the predetermined position to ensure that the clamping force is appropriate;

[0018] S5. Wait for the housing to cool naturally to room temperature, so that the stator and housing are tightly connected, ensuring that there are no gaps or loosening between the stator and housing during the cooling process.

[0019] As a further description of the above technical solution: In step S1, the predetermined temperature is 140-180°C, and the casing is ensured to be heated evenly during the heating process.

[0020] The above technical solution has the following advantages or beneficial effects:

[0021] 1. This invention, through the cooperation of a clamping mechanism and a positioning mechanism, can accurately fix the motor stator and ensure its precise fit with the housing during the heat fitting process, avoiding stator position deviation and improving assembly accuracy. The adjustment slots on the mounting plate and the adjustment function of the clamping arms enable the tooling to adapt to motor stators of different sizes and shapes, enhancing the tooling's versatility and adapting to various motor models, thus improving resource utilization efficiency and the long-term use value of the tooling. The positioning of multiple positioning plates ensures the correct position of the stator within the housing, avoiding misalignment and deviation during assembly.

[0022] 2. This tooling design supports multi-point detachable connection, which facilitates installation and disassembly. Only some parts can be inspected and replaced without replacing the whole thing, making maintenance and adjustment convenient. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a general-purpose motor stator heat fitting tool in one embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of a general-purpose motor stator heat fitting tool in one embodiment of the present invention. Figure 2 ;

[0025] Figure 3 This is a front view of a general-purpose motor stator heat-shrinking tooling in one embodiment of the present invention;

[0026] Figure 4 This is a cross-sectional view of a general-purpose motor stator heat fitting tool in one embodiment of the present invention;

[0027] Figure 5 for Figure 1 Schematic diagram of the mounting plate in the middle;

[0028] Figure 6 for Figure 1 A schematic diagram of the clamping mechanism;

[0029] Figure 7 for Figure 1 A schematic diagram of the positioning mechanism.

[0030] Legend:

[0031] 1. Base; 2. Mounting plate; 3. Clamping mechanism; 4. Positioning mechanism; 5. First bolt; 6. Threaded hole; 7. Adjusting stud; 8. Second bolt; 9. Support leg; 201. Fixing plate; 202. Adjusting groove; 203. Mounting hole; 31. Drive assembly; 32. Clamping arm; 311. Protective shell; 312. Electric telescopic rod; 41. Base plate; 42. Positioning plate; 43. Long slot. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] Please see Figure 1-7 The present invention provides a technical solution: a general-purpose motor stator heat fitting tooling of the present invention includes a base 1, a clamping mechanism 3 and a positioning mechanism 4. The base 1 is provided with a mounting plate 2, the clamping mechanism 3 is provided on the base 1, the clamping mechanism 3 is used to clamp and fix the motor stator, and the positioning mechanism 4 is connected to the mounting plate 2 to ensure the accurate positioning of the stator in the housing.

[0036] In the technical solution of this invention, the motor stator can be precisely fixed by the cooperation of the clamping mechanism 3 and the positioning mechanism 4, and its precise fit with the housing during the heat fitting process can be ensured, avoiding stator position deviation and improving assembly accuracy. The adjustment slot on the mounting plate 2 and the adjustment function of the clamping arm enable the tooling to adapt to motor stators of different sizes and shapes, enhancing the tooling's versatility and adapting to various motor models, thereby improving resource utilization efficiency and the long-term use value of the tooling. The positioning mechanism 4 ensures the correct position of the stator in the housing, avoiding misalignment and deviation during assembly. The clamping mechanism 3 and the positioning mechanism 4 can be flexibly adjusted according to the size and shape of the motor stator, improving the versatility and adaptability of the tooling fixture.

[0037] like Figure 1 and Figure 5As shown, the mounting plate 2 includes multiple fixing plates 201. The fixing plates 201 are provided with adjustment grooves 202, and multiple mounting holes 203 are provided at equal intervals on both sides of the fixing plates 201. The mounting holes 203 are located on both sides of the adjustment grooves 202. The adjustment grooves 202 on the fixing plates 201 facilitate the position adjustment of the clamping mechanism 3, and the mounting holes 203 on the fixing plates 201 facilitate the position adjustment of the positioning mechanism 4.

[0038] like Figure 1 and Figure 6 As shown, the clamping mechanism 3 includes a drive assembly 31, which is connected to multiple clamping arms 32. The clamping arms 32 can move within the adjustment groove 202. The drive assembly 31 includes a protective shell 311, and multiple electric telescopic rods 312 are provided inside the protective shell 311. One end of the electric telescopic rod 312 is connected to the clamping arm 32. The motor stator can be clamped and fixed by the clamping arm 32. By controlling the operation of the electric telescopic rod 312, the clamping arm 32 can be moved. By adjusting the position of the clamping arm 32, it is convenient to clamp and fix motor stators of different specifications, thus enhancing the applicability of the device.

[0039] By employing a high-precision transmission mechanism and clamping arm design, the stability and accuracy of the stator during assembly are ensured. The layout of the clamping arms can be adjusted according to the size and shape of the motor stator to accommodate motor stators of different specifications.

[0040] like Figure 5 and Figure 7 As shown, the positioning mechanism 4 includes multiple base plates 41 and multiple positioning plates 42. The lower end of the positioning plate 42 is connected to the base plate 41. The base plate 41 has an elongated hole 43, which is detachably connected to the mounting hole 203 by a first bolt 5. The first bolt 5 facilitates the installation and removal of the base plate 41. By screwing the first bolt 5 into different mounting holes 203, the position of the base plate 41 and the positioning plate 42 can be adjusted. The elongated hole 43 facilitates fine-tuning of the position of the base plate 41 and the positioning plate 42, thereby improving the installation accuracy.

[0041] By employing a precision guide rail system and positioning plate design, the correct position of the stator within the housing is ensured. By adjusting the position of the positioning plate, the precise positioning of the stator within the housing can be guaranteed.

[0042] Among them, the positioning plate 42 is an arc-shaped plate, and the number of positioning plates 42 is the same as the number of clamping arms 32.

[0043] like Figure 1 and Figure 4As shown, the clamping arm 32 has a threaded hole 6, and an adjusting stud 7 is threadedly connected to the threaded hole 6. The height of the adjusting stud 7 can be adjusted through the threaded hole 6, so that the adjusting studs 7 on the multiple clamping arms 32 can position the housing. By contacting the adjusting stud 7 with the top of the inner side of the housing, the position of the stator inside the housing can be adjusted.

[0044] The height of the adjusting stud 7 outside the clamping arm can be adjusted by adjusting the height of the adjusting stud 7 in the threaded hole 6, which facilitates the support and installation of the housing. Adjusting the height of the adjusting stud can meet the positional relationship between the stator and the housing during assembly.

[0045] like Figure 1 and Figure 3 As shown, the mounting plate 2 is detachably connected to the base 1 by the second bolt 8, and the base 1 is connected to the bottom of the support leg 9; the second bolt 8 facilitates the installation and removal of the mounting plate 2, and makes it easy to inspect and replace the mounting plate 2.

[0046] A general-purpose motor stator heat-shrink fitting assembly method includes: S1, heating the motor housing to a predetermined temperature using an external heating device; S2, adjusting the clamping mechanism 3 and positioning mechanism 4 of the tooling fixture according to the size and shape of the motor stator; S3, placing the preheated motor housing on the tooling fixture, and then gently placing the stator into the motor housing, ensuring that the axis of the stator coincides with that of the motor housing; S4, fixing the stator in a predetermined position using the clamping mechanism of the tooling fixture, ensuring that the clamping force is appropriate; S5, waiting for the motor housing to cool naturally to room temperature, so that the stator and the motor housing are tightly bonded, ensuring that there are no gaps or loosening between the stator and the motor housing during the cooling process.

[0047] In the method of this invention, when preheating the housing, an external heating device is used to heat the housing to a predetermined temperature (e.g., 140-180°C). During the heating process, it is necessary to ensure that the housing is heated evenly to avoid local overheating or scorching. When adjusting the tooling fixture, the clamping mechanism 3 of the tooling fixture is adjusted by the drive assembly 31 according to the size and shape of the motor stator, and the positioning mechanism 4 is manually adjusted. During the adjustment process, it is necessary to ensure that the clamping mechanism 3 can stably clamp the stator core and that the positioning mechanism 4 can accurately position the stator core within the housing. When placing the stator, the stator core is placed on the tooling fixture, and then the preheated housing is gently placed over the stator core. To ensure proper assembly, the stator core and the housing axis must be aligned to avoid misalignment and deviation during assembly. During clamping, the clamping mechanism 3 of the tooling fixture is used to fix the stator core in the predetermined position. During clamping, the clamping force must be moderate to avoid damage or deformation of the stator core. Simultaneously, the clamping mechanism must be stable and reliable to prevent loosening or detachment during assembly. During cooling and shaping, the housing is allowed to cool naturally to room temperature, allowing the stator core to bond tightly with the housing. During cooling, it must be ensured that there are no gaps or loosening between the stator core and the housing to improve assembly accuracy and motor performance. At the same time, cracks or deformation must be avoided during cooling.

[0048] Working principle: Through the cooperation of clamping mechanism 3 and positioning mechanism 4, the motor stator can be accurately fixed and its precise fit with the housing during the heat fitting process can be ensured, avoiding stator position deviation and improving assembly accuracy. The adjustment slot on the mounting plate 2 and the adjustment function of the clamping arm enable the tooling to adapt to motor stators of different sizes and shapes, enhancing the tooling's versatility and adapting to various motor models, thereby improving resource utilization efficiency and the long-term use value of the tooling. Through multiple positioning mechanisms 4, the correct position of the stator in the housing is ensured, avoiding misalignment and deviation during assembly. The clamping mechanism 3 and positioning mechanism 4 can be flexibly adjusted according to the size and shape of the motor stator, improving the versatility and adaptability of the tooling fixture.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A universal motor stator heat fitting fixture, characterized in that, include: A base (1) on which a mounting plate (2) is provided; A clamping mechanism (3) is provided on the base (1) and is used to clamp and fix the motor stator. Positioning mechanism (4), which is connected to the mounting plate (2), is used to ensure the accurate positioning of the stator in the housing; The mounting plate (2) includes multiple fixing plates (201), the fixing plates (201) are provided with adjustment grooves (202), and multiple mounting holes (203) are provided at equal intervals on both sides of the fixing plates (201), the mounting holes (203) are located on both sides of the adjustment grooves (202); The clamping mechanism (3) includes a drive assembly (31) connected to a plurality of clamping arms (32), which are movable within an adjustment groove (202); The positioning mechanism (4) includes multiple base plates (41) and multiple positioning plates (42). The lower end of the positioning plate (42) is connected to the base plate (41). The base plate (41) has an elongated hole (43). The elongated hole (43) is detachably connected to the mounting hole (203) by a first bolt (5). The clamping mechanism (3) works in conjunction with the positioning mechanism (4) to make the stator coincide with the axis of the housing during the heat fitting process.

2. The universal motor stator heat fitting tooling according to claim 1, characterized in that: The drive assembly (31) includes a protective shell (311), inside which are provided a plurality of electric telescopic rods (312), one end of which is connected to the clamping arm (32).

3. The universal motor stator heat fitting tooling according to claim 1, characterized in that: The positioning plate (42) is an arc-shaped plate, and the number of positioning plates (42) is the same as the number of clamping arms (32).

4. The universal motor stator heat fitting tooling according to claim 1, characterized in that: The clamping arm (32) has a threaded hole (6), and an adjusting stud (7) is threaded onto the threaded hole (6).

5. The universal motor stator heat fitting tooling according to claim 1, characterized in that: The mounting plate (2) is detachably connected to the base (1) by a second bolt (8), and the base (1) is connected to a support leg (9) below.

6. A general-purpose motor stator heat-shrink fitting assembly method, characterized in that, Using the general-purpose motor stator heat fitting fixture as described in any one of claims 1-5 includes the following steps: S1. Use an external heating device to heat the casing to a predetermined temperature; S2. Adjust the clamping mechanism (3) and positioning mechanism (4) of the tooling fixture according to the size and shape of the motor stator; S3. Place the preheated housing on the tooling fixture, and then gently place the stator into the housing, ensuring that the axis of the stator coincides with that of the housing. S4. The clamping mechanism of the tooling fixture is used to fix the stator in the predetermined position to ensure that the clamping force is appropriate; S5. Wait for the housing to cool naturally to room temperature, so that the stator and housing are tightly connected, ensuring that there are no gaps or loosening between the stator and housing during the cooling process.

7. The assembly method of the general-purpose motor stator heat fitting tooling according to claim 6, characterized in that: In step S1, the predetermined temperature is 140-180℃, and the casing is ensured to be heated evenly during the heating process.

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