A press-fitting device for a housing stator assembly

Abstract

The present invention discloses a press-fitting device for a housing stator assembly, which relates to the technical field of press-fitting devices and includes a frame, a heating component, a pressing component and an anti-deviating structure. By first driving the heating component to move in the direction of the pressing component, the heating component extends into the housing after passing through the positioning hole to heat the inner wall of the housing; then the pressing component is driven to move the housing vertically downward, and the housing is pressed onto the outside of the stator, and the anti-deviating structure provided in the coaxial direction below the housing inside the stator is used to fix the stator and correct the deviation during the pressing process, so that the axis of the stator and the housing coincide, reducing the deviation of the pressing path and improving the assembly accuracy of the housing and the stator. After the housing cools down naturally, the inner wall shrinks and adheres to the outer wall of the stator, making the assembly more secure. By setting the above structure, the present invention enables the heating and pressing in the device to operate in a linked manner, with a simple process and high efficiency, and without introducing secondary positioning errors.

Description

Technical Field

[0001] The present invention relates to the technical field of press-fitting devices, and in particular to a press-fitting device for a housing stator assembly. Background Art

[0002] In electric motor manufacturing, precision press-fitting the motor housing and stator is a critical process for ensuring structural stability and operational performance. Traditional press-fitting processes typically use an external heat source (such as an oven or induction coil) to heat the entire housing before mechanically pressing the stator into place.

[0003] However, during the press-fitting process, the coaxiality of the housing and the stator relies on manual or simple fixture adjustment, and lacks a dynamic correction mechanism. The deviation of the press-fitting path can easily lead to component eccentricity, low positioning accuracy, and affect the smooth operation of the motor. Secondly, the structure of the external heat source is complex and the heat loss is serious, which affects the dimensional accuracy after assembly. In addition, the existing press-fitting equipment often separates heating and press-fitting, resulting in cumbersome and inefficient processes, and secondary positioning errors are easily introduced during multi-station conversion. Summary of the Invention

[0004] The present invention aims to provide a press-fitting device for a housing stator assembly. This device enables the heating element to directly contact the inner wall of the housing, precisely guides the press-fitting path, and provides dynamic deviation correction. The coordinated operation of the heating element and the press-fitting mechanism achieves high-precision alignment, thereby improving the assembly efficiency of the housing stator assembly.

[0005] The present invention is achieved through the following technical solutions: A housing stator assembly press-fitting device comprises: a frame;

[0006] at least one heating assembly, the heating assembly being arranged inside the frame and being used to heat the casing;

[0007] A pressing assembly is provided below the heating assembly for pressing the housing. The pressing assembly is provided with at least one positioning hole through which the heating assembly can pass. A positioning fixture for fixing the housing is provided at a corresponding position below the positioning hole.

[0008] The anti-deviation structure is arranged on the frame and is used to fix the stator and correct the stator during the press-fitting process so that the center line of the stator is collinear with the center line of the casing.

[0009] Preferably, the anti-drift structure includes a self-centering structure, which includes a base and a plurality of claws, wherein a rotating ring capable of rotating relative to the base is embedded in the base, and the claw includes a connecting plate having two connecting parts, and the two connecting parts are rotatably connected to the base and the rotating ring respectively, and rotating the rotating ring can drive the plurality of claws to move closer to or away from each other.

[0010] Preferably, a rotating groove is provided on the outside of the base, and a rotating rod is provided on the rotating ring, and the rotating rod passes through the rotating groove. A fixed rod is provided at one end of the rotating groove on the base, and the rotating rod is rotated toward or away from the fixed rod so that the rotating ring drives the plurality of claws to approach or move away from each other; an arc-shaped inclined surface is provided at the bottom of the positioning fixture, and the inclined surface is inclined downward from the end away from the rotating rod, and the rotating rod first contacts the lowest end of the inclined surface and then contacts the highest end of the inclined surface.

[0011] Preferably, a support plate is provided on the top surface of the base to support the stator.

[0012] Preferably, the anti-drift structure further includes a plurality of guide posts, all of which are located around the outer ring of the stator; a plurality of guide holes are provided on the casing, and the guide posts correspond one-to-one to the guide holes for fixing the casing; the top end of the guide post is a hemispherical or conical rounded transition surface.

[0013] Preferably, the heating assembly includes a cylinder and multiple cylinder fixing plates, and a cylinder heat insulation plate, a cylinder connecting plate, a heating rod connecting rod and a heating rod are fixedly connected in sequence below the cylinder fixing plate; the outer diameter d1 of the heating rod is smaller than the inner diameter d2 of the casing.

[0014] Preferably, a heat insulation cover is further provided on the outside of the heating assembly above the pressing assembly.

[0015] Preferably, the positioning fixture includes at least three casing positioning blocks evenly distributed along the circumference of the casing, the casing positioning blocks are connected to the bottom surface of the pressing assembly through sliding grooves, and the casing positioning blocks can move radially to adapt to casings of different diameters.

[0016] Preferably, the surface of the clamping claw is provided with serrations for clamping the stator.

[0017] Preferably, the top end of the guide post is a tapered rounded transition surface, and the tapered rounded transition surface at the top end of the guide post first contacts the edge of the guide hole to automatically correct the coaxiality deviation between the guide post and the guide hole.

[0018] The present invention has the following beneficial effects:

[0019] The present invention discloses a press-fitting device for a casing stator assembly. The device comprises the following steps: firstly, a heating assembly is driven to move toward a pressing assembly, and the heating assembly extends into the casing after passing through a positioning hole to heat the inner wall of the casing; then, the pressing assembly is driven to drive the casing to move vertically downward, and the casing is press-fitted to the outer side of the stator; and in conjunction with an anti-deviation structure provided in a coaxial direction below the casing inside the stator, the stator is fixed and the deviation is corrected during the press-fitting process, so that the axis of the stator and the casing coincide, the deviation of the press-fitting path is reduced, and the assembly accuracy of the casing and the stator is improved. After the casing cools naturally, the inner wall shrinks and clings to the outer wall of the stator, making the assembly more secure. Moreover, the heating and press-fitting in the device are operated in linkage, the process is simple, the efficiency is high, and no secondary positioning error is introduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the housing stator assembly press-fitting device proposed by the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0022] Figure 3 It is a structural schematic diagram of the heating component of the present invention;

[0023] Figure 4 This is a schematic diagram of the assembly of the heating component and the pressing component of the present invention;

[0024] Figure 5 This is a schematic diagram of the assembly of the guide hole and the guide post of the present invention;

[0025] Figure 6 Schematic diagram of the overall structure of the self-centering structure of the present invention;

[0026] Figure 7 for Figure 6 Schematic diagram of the internal structure.

[0027] Legend:

[0028] Frame; 2. Heating assembly; 201. Cylinder; 202. Cylinder fixing plate; 203. Cylinder heat insulation plate; 204. Cylinder connecting plate; 205. Heating rod connecting rod; 206. Heating rod; 207. Heat insulation cover; 3. Pressing assembly; 301. Positioning hole; 302. Positioning fixture; 3021. Casing positioning block; 4. Casing; 401. Guide hole; 5. Stator; 6. Anti-drift structure; 601. Self-centering structure; 6011. Base; 6012. Clamping claw; 6013. Rotating ring; 6014. Rotating groove; 6015. Rotating rod; 6016. Fixing rod; 6017. Support plate; 602. Guide column; DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example:

[0031] Reference Figures 1 to 6 , the present invention provides a housing stator assembly press-fitting device, comprising: a frame 1;

[0032] In practical applications, the rack 1 can be selected or adjusted as needed. There are usually racks 1 with a frame structure and racks 1 with a box structure. The rack 1 of the embodiment of the present invention refers to Figure 1 This facilitates the placement of the housing 4 and the stator 5 and proper adjustment during press-fitting, and is also beneficial for removing the assembly after press-fitting is completed.

[0033] at least one heating assembly 2, the heating assembly 2 being disposed inside the frame 1 and configured to heat the housing 4;

[0034] A pressing assembly 3 is provided below the heating assembly 2 for pressing the housing 4. The pressing assembly 3 is provided with at least one positioning hole 301 through which the heating assembly 2 passes. A positioning fixture 302 for fixing the housing 4 is provided at a corresponding position below the positioning hole 301.

[0035] The anti-deviation structure 6 is provided on the frame 1 and is used to fix the stator 5 and correct the stator 5 during the press-fitting process so that the center line of the stator 5 is collinear with the center line of the housing 4.

[0036] The present invention provides a press-fitting device for a housing stator assembly. A heating assembly 2 is provided inside a frame 1 and is located above a pressing assembly 3. The pressing assembly 3 is provided with at least one positioning hole 301. A positioning fixture 302 is provided on the lower surface of the pressing assembly 3. The housing 4 is fixed in the positioning fixture 302, and the stator 5 is fixed on the anti-drift structure 6. Each of the heating assembly 2, the positioning hole 301, the positioning fixture 302, the housing 4, the stator 5 and the anti-drift structure 6 form a group. When the device is started, the heating assembly 2 is first driven to move toward the pressing assembly 3. The heating assembly 2 passes through the positioning hole 301 and then extends into the housing 4 to heat the inner wall of the housing 4. , the ductility of the inner wall of the casing 4 is enhanced after being heated, and the risk of deformation of the casing 4 is reduced; then the downward pressing component 3 is driven to drive the casing 4 to move vertically downward, the casing 4 is separated from the heating component 2, and the casing 4 moves to above the stator 5. The device drives the downward pressing component 3 to press down and press the casing 4 to the outside of the stator 5, and cooperates with the anti-deviation structure 6 provided in the coaxial direction below the casing 4 inside the stator 5. During the press-fitting process, the stator 5 is fixed and the stator 5 is corrected so that the axis of the stator 5 coincides with that of the casing 4, reducing the deviation of the press-fitting path and improving the assembly accuracy of the casing 4 and the stator 5. After the casing 4 cools naturally, the inner wall shrinks and fits tightly to the outer wall of the stator 5, making the assembly more secure.

[0037] The diameter of the positioning hole 301 is equal to the inner diameter of the housing 4 or is 1-3 mm larger than the inner diameter of the housing 4 , and the internal accommodation space of the positioning fixture 302 is larger than the outermost circle of the housing 4 .

[0038] Furthermore, in another embodiment, the anti-drift structure 6 includes a self-centering structure 601, the self-centering structure 601 includes a base 6011 and a plurality of claws 6012, the base 6011 is embedded with a rotating ring 6013 that can rotate relative to the base 6011, the claw 6012 includes a connecting plate, the connecting plate has two connecting parts, and the two connecting parts are respectively rotatably connected to the base 6011 and the rotating ring 6013, and rotating the rotating ring 6013 can drive the plurality of claws 6012 to approach or move away from each other.

[0039] A rotatable rotating ring 6013 is embedded inside the base 6011 of the self-centering structure 601, and the claws 6012 are connected to the base 6011 and the rotating ring 6013 respectively through two connecting parts on the connecting plate. When the rotating ring 6013 is rotated, due to the rotational connection relationship between the claws 6012, the rotating ring 6013 and the base 6011, several claws 6012 will be driven to approach or move away from each other, thereby achieving the clamping or loosening of the stator 5.

[0040] Furthermore, in another embodiment, the clamping claw 6012 can be a forward clamping claw, provided inside the stator 5, for clamping and fixing the stator 5 outward; the clamping claw 6012 can also be a reverse clamping claw, provided outside the stator 5, for clamping and fixing the stator 5 inward.

[0041] Furthermore, in another embodiment, a rotating groove 6014 is provided on the outer side of the base 6011, and a rotating rod 6015 is provided on the rotating ring 6013. The rotating rod 6015 passes through the rotating groove 6014, and a fixed rod 6016 is provided at one end of the rotating groove 6014 on the base 6011. The rotating rod 6015 is rotated toward or away from the fixed rod 6016, so that the rotating ring 6013 drives the plurality of claws 6012 to approach or move away from each other; an arc-shaped inclined surface is provided at the bottom of the positioning fixture 302, and the inclined surface is inclined downward from the end away from the rotating rod 6015, and the rotating rod 6015 first contacts the lowest end of the inclined surface and then contacts the highest end of the inclined surface.

[0042] A rotation groove 6014 is provided on the outer side of the base 6011, and the rotation rod 6015 on the rotating ring 6013 passes through the rotation groove 6014. At the same time, a fixed rod 6016 is provided at one end of the rotation groove 6014 on the base 6011. By driving the rotation rod 6015 towards or away from the fixed rod 6016, the rotating ring 6013 can be driven to rotate; an arc-shaped inclined surface is provided at the bottom of the positioning fixture 302, which is inclined downward from the end away from the rotation rod 6015. In actual application, the arc-shaped inclined surface at the bottom of the positioning fixture 302 cooperates with the rotating rod 6015. When the pressing component 3 moves downward, the rotating rod 6015 slides along the inclined surface, converting the vertical downward force into horizontal displacement of the rotating rod 6015, and then drives the claw 6012 to fix the stator 5, so that the pressing component 3 can be accurately positioned while pressing downward, thereby realizing the linkage between the pressing component 3 and the anti-deviation structure 6, which not only has a simple structure but also reduces the failure rate; in addition, the inclined surface structure does not require an additional power source, thereby reducing energy consumption.

[0043] Furthermore, in another embodiment, a support plate 6017 is provided on the top surface of the base 6011 to support the stator 5. The support plate 6017 provides a stable support platform for the stator 5, ensuring that the stator 5 is in the proper position throughout the entire operation process. It works in conjunction with other parts of the anti-drift structure 6 to ensure the stability and reliability of the press-fitting process.

[0044] Furthermore, in another embodiment, the number of the clamping jaws 6012 may be three or four, and the surface of the clamping jaws 6012 may be provided with serrations, transverse stripes and other patterns to increase friction with the surface of the workpiece and ensure reliable clamping.

[0045] Furthermore, in another embodiment, the self-centering structure 601 also includes a servo motor or a pneumatic cylinder to drive the rotating rod 6015 to achieve automated drive, which not only shortens the clamping time of the self-centering structure 601 and improves production efficiency, but also has strong versatility and is easy to maintain.

[0046] Furthermore, in another embodiment, the anti-drift structure 6 further includes a plurality of guide posts 602, each located around the outer ring of the stator 5. The housing 4 is provided with a plurality of guide holes 401, with the guide posts 602 corresponding one-to-one with the guide holes 401 to secure the housing 4. The guide posts 602 are each located around the outer ring of the stator 5 and extend into the guide holes 401 of the housing 4 as the press assembly 3 moves downward, providing an axial guide path and limiting radial drift during press-fitting of the housing 4.

[0047] Furthermore, in another embodiment, the top of the guide column 602 is a transition surface such as a hemispherical or conical rounded corner. When the housing 4 and the stator 5 are assembled, the transition surface at the top of the guide column 602 first contacts the edge of the guide hole 401. Due to the design of the transition surface, the housing 4 produces a slight horizontal displacement, automatically correcting the coaxiality deviation between the guide column 602 and the guide hole 401, thereby achieving rapid alignment.

[0048] Furthermore, in another embodiment, the anti-drift structure 6 is an elastic support component, which includes a disc spring or rubber damper in an annular array, a position sensor and a cylinder arranged at the bottom of the stator 5. When the housing 4 is deviated due to heat deformation or assembly error, the deformation of the elastic damping unit triggers the position sensor, and the linked cylinder pushes the stator 5 to reset, thereby avoiding damage to parts caused by hard contact.

[0049] Furthermore, in another embodiment, the heating assembly 2 includes a cylinder 201 and a plurality of cylinder fixing plates 202, wherein a cylinder heat insulation plate 203, a cylinder connecting plate 204, a heating rod connecting rod 205, and a heating rod 206 are fixedly connected in sequence below the cylinder fixing plates 202; the outer diameter d1 of the heating rod 206 is smaller than the inner diameter d2 of the housing 4;

[0050] In actual use, the cylinder 201 pushes the heating rod 206 to the appropriate heating position inside the casing 4. Since the outer diameter d1 of the heating rod 206 is smaller than the inner diameter d2 of the casing 4, the heating rod 206 can be fully extended into the casing 4, thereby uniformly heating the entire inner wall of the casing 4; the heating component 2 and the cylinder 201 are fixed to the cylinder fixing plate 202 by bolts, nuts and other connectors. The cylinder fixing plate 202 is provided with mounting holes and positioning grooves to ensure the installation accuracy of the heating component 2 and the cylinder 201, and can effectively transfer the weight of the heating component 2 and the cylinder 201 and the force generated during operation to the supporting structure, thereby ensuring the stable operation of the entire system; through the precise drive of the cylinder 201, the heating component 2 can accurately reach the appropriate position of the heated object, which can not only achieve uniform heating and improve production efficiency, but also save energy.

[0051] Furthermore, in another embodiment, the outer diameter d1 of the heating rod 206 is 2-6 mm smaller than the inner diameter d2 of the housing 4 .

[0052] Furthermore, in another embodiment, a heat shield 207 is provided outside the heating assembly 2 above the pressing assembly 3. The heat shield 207 wraps the heating assembly 2. When the heating assembly 2 generates heat, the heat shield 207 can prevent the heat from diffusing to the surrounding environment, thereby reducing energy consumption.

[0053] Furthermore, in another embodiment, the positioning fixture 302 includes at least three casing positioning blocks 3021 evenly distributed along the circumferential direction of the casing 4. The casing positioning blocks 3021 are connected to the bottom surface of the pressing assembly 3 through a slide groove. The casing positioning blocks 3021 can move radially to adapt to casings 4 of different diameters.

[0054] The casing positioning block 3021 can move radially to adapt to casings 4 of different diameters, thereby enhancing the versatility of the fixture. At the same time, workers only need simple operations to quickly adjust the positioning fixture 302 without the need for heavy physical labor, reducing manual intervention and reducing labor intensity. The uniform distribution of multiple casing positioning blocks 3021 helps to reduce positioning errors and improve the position accuracy of the casing 4 during the processing. The radial movement design enables the casing positioning block 3021 to fit closely to the surface of the casing 4, thereby enhancing the fixing effect of the fixture on the casing 4, thereby improving stability during the processing.

[0055] Furthermore, in another embodiment, the surface of the housing positioning block 3021 is provided with an anti-slip coating to increase the friction between the positioning fixture 302 and the housing 4, prevent sliding during the press-fitting process, and improve the accuracy and stability of the press-fitting.

[0056] Working principle: The casing stator assembly press-fitting device provided by the present invention, when the device is started, first drives the heating component 2 to move toward the pressing component 3, and the heating component 2 extends into the casing 4 after passing through the positioning hole 301 to heat the inner wall of the casing 4. The ductility of the inner wall of the casing 4 is enhanced after heating, and the risk of deformation of the casing 4 is reduced; then drives the pressing component 3 to drive the casing 4 to move vertically downward, the casing 4 is separated from the heating component 2, and the casing 4 moves to above the stator 5. The device drives the pressing component 3 to press down and press the casing 4 to the outside of the stator 5, and cooperates with the anti-deviation structure provided in the coaxial direction below the casing 4 inside the stator 5. During the pressing process, the stator 5 is fixed and the stator 5 is corrected so that the axis of the stator 5 coincides with the axis of the casing 4, reducing the deviation of the pressing path, and improving the assembly accuracy of the casing 4 and the stator 5. After the casing 4 cools naturally, the inner wall shrinks and fits tightly to the outer wall of the stator 5, making the assembly more firm.

[0057] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicating orientation or positional relationships, they are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting the present invention. For those skilled in the art, the specific meanings of the above terms can be understood in conjunction with the accompanying drawings and according to specific circumstances.

[0058] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this disclosure should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0059] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A housing stator assembly press-fitting device, characterized in that: include: Rack (1); At least one heating component (2), the heating component (2) being arranged inside the frame (1) and used for heating the casing (4); the heating component (2) comprising a cylinder (201) and a plurality of cylinder fixing plates (202), a cylinder heat insulation plate (203), a cylinder connecting plate (204), a heating rod connecting rod (205) and a heating rod (206) being fixedly connected in sequence below the cylinder fixing plates (202); an outer diameter d1 of the heating rod (206) being smaller than an inner diameter d2 of the casing (4); A pressing assembly (3), the pressing assembly (3) being located below the heating assembly (2) and used for pressing the housing (4), the pressing assembly (3) being provided with at least one positioning hole (301) capable of accommodating the heating assembly (2) passing therethrough, and a positioning fixture (302) for fixing the housing (4) being provided at a corresponding position below the positioning hole (301); An anti-deviation structure (6), the anti-deviation structure (6) being provided on the frame (1) and being used for fixing the stator (5) and correcting the stator (5) during the press-fitting process so that the center line of the stator (5) is collinear with the center line of the housing (4); The anti-deviating structure (6) includes a self-centering structure (601), the self-centering structure (601) includes a base (6011) and a plurality of claws (6012), the base (6011) is embedded with a rotating ring (6013) that can rotate relative to the base (6011), the claws (6012) include a connecting plate, the connecting plate has two connecting parts, and the two connecting parts are rotatably connected to the base (6011) and the rotating ring (6013) respectively. , rotating the rotating ring (6013) can drive the plurality of claws (6012) to move closer to or farther from each other; the anti-deviating structure (6) further comprises a plurality of guide posts (602), and the guide posts (602) are all located around the outer ring of the stator (5); a plurality of guide holes (401) are provided on the housing (4), and the guide posts (602) correspond to the guide holes (401) one by one, for fixing the housing (4); the top of the guide post (602) is a hemispherical or conical fillet transition surface; When the device is started, the heating component (2) is first driven to move toward the pressing component (3), and the heating component (2) passes through the positioning hole (301) and extends into the interior of the housing (4) to heat the inner wall of the housing (4). The pressing component (3) is then driven to drive the housing (4) to move vertically downward, and the housing (4) is separated from the heating component (2). The housing (4) moves to the top of the stator (5), and the device drives the pressing component (3) to press down and press the housing (4) onto the outside of the stator (5). The anti-deviating structure provided in the coaxial direction inside the stator (5) and below the housing (4) is used to fix the stator (5) and correct the deviation of the stator (5) during the pressing process, so that the axis of the stator (5) and the housing (4) coincide.

2. The housing stator assembly press-fitting device according to claim 1, characterized in that: A rotation groove (6014) is provided on the outer side of the base (6011), a rotation rod (6015) is provided on the rotation ring (6013), the rotation rod (6015) passes through the rotation groove (6014), and a fixed rod (6016) is provided at one end of the rotation groove (6014) on the base (6011). The rotation rod (6015) is rotated toward or away from the fixed rod (6016), so that the rotation ring (6013) drives the plurality of claws (6012) to move toward or away from each other; an arc-shaped inclined surface is provided at the bottom of the positioning fixture (302), the inclined surface is inclined downward from the end away from the rotation rod (6015), and the rotation rod (6015) first contacts the lowest end of the inclined surface and then contacts the highest end of the inclined surface.

3. The housing stator assembly press-fitting device according to claim 1, characterized in that: A support plate (6017) is provided on the top surface of the base (6011) for supporting the stator (5).

4. The housing stator assembly press-fitting device according to claim 1, characterized in that: A heat insulation cover (207) is also provided on the outside of the heating assembly (2) above the pressing assembly (3).

5. The housing stator assembly press-fitting device according to claim 1, characterized in that: The positioning fixture (302) comprises at least three casing positioning blocks (3021) evenly distributed along the circumference of the casing (4). The casing positioning blocks (3021) are connected to the bottom surface of the pressing assembly (3) via a sliding groove. The casing positioning blocks (3021) can move radially to adapt to casings (4) of different diameters.

6. The housing stator assembly press-fitting device according to claim 1, characterized in that: The surface of the clamping claw (6012) is provided with serrations for clamping the stator (5).

7. The housing stator assembly press-fitting device according to claim 1, characterized in that: The top of the guide post (602) is a tapered fillet transition surface, and the tapered fillet transition surface at the top of the guide post (602) first contacts the edge of the guide hole (401) to automatically correct the coaxial deviation between the guide post (602) and the guide hole (401).

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