Auxiliary fixture for positioning and assembling motor stator

Abstract

The utility model discloses an auxiliary fixture for positioning and assembling a motor stator, which belongs to the technical field of motor assembling, and comprises a movable frame, a support piece arranged on the movable frame, an adjusting disc movably arranged on the movable frame and used for adjusting the position of the support piece, and a positioning mechanism arranged on the adjusting disc, the positioning assembly is arranged on the adjusting disc, is used for adjusting the position of the supporting piece, and comprises guide rods which are arranged on the adjusting disc in an equal-angle sliding manner; and the guide assembly is arranged on the guide rod, is used for guiding the stator and the shell, and comprises a guide plate fixedly arranged at the end part of the guide rod, and an air bag used for gap filling is arranged on the upper side of the guide plate, so that the accuracy during equipment assembly is further improved, and the condition of deviation or different spacing in the assembly process is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of motor assembly technology, and in particular relates to an auxiliary fixture for positioning and assembling a motor stator. Background Technology

[0002] During motor assembly, the installation accuracy of the stator and the housing directly determines the motor's operating performance. There is usually a design gap (0.02mm-0.5mm) between the outer circle of the stator and the inner circle of the housing. This gap must be evenly distributed to ensure the coaxiality of the stator and rotor and avoid vibration, noise, or rotor rubbing failures caused by air gap deviation.

[0003] However, existing assembly fixtures have significant shortcomings in handling this gap. Traditional fixtures mostly rely on a single datum (such as a stop or locating pin) for radial positioning, and cannot dynamically balance the circumferential gap between the stator and the housing. During assembly, the stator is easily shifted to one side due to gravity, insertion angle deviation, or housing inner circle tolerance, resulting in an excessively small gap (or even a tight fit) on one side and an excessively large gap on the other side, forming a axial misalignment. This axial misalignment can also cause abnormal robot pressing force, leading to housing cracking or stator damage, severely restricting production efficiency and product qualification rate. For example, a technical solution disclosed in patent number CN202322161082.5 has the above-mentioned problems. The equipment cannot balance the gap between the stator and the housing during assembly, causing the stator to easily tilt during the assembly process. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an auxiliary fixture for positioning and assembling motor stators, which solves the problem that existing fixtures lack gap monitoring and adaptive adjustment functions and cannot dynamically adjust the positioning force according to the gap design values ​​of different motor models.

[0005] This utility model is implemented as follows: a motor stator positioning and assembly auxiliary fixture includes a movable frame, a support member disposed on the movable frame, and further includes:

[0006] The movable setting is on the mobile frame, with an adjustment disc for adjusting the position of the support components;

[0007] A positioning component, set on an adjustment plate, is used for adjusting the position of the support, including a guide rod that is equidistantly slidably set on the adjustment plate;

[0008] A guide assembly, mounted on a guide rod, is used to guide the stator and the housing. It includes a guide plate fixedly mounted at the end of the guide rod, and an air bladder for gap filling is provided on the upper side of the guide plate.

[0009] As a preferred embodiment of this utility model, the adjusting plate has an adjusting groove, the end of the moving frame is disposed in the adjusting groove, and a plurality of first springs are disposed at equal angles between the end of the moving frame and the adjusting groove.

[0010] As a preferred embodiment of this invention, a slide bar is fixedly provided on the inner side of the guide rod, and the guide rod is slidably mounted on the adjustment disc via the slide bar.

[0011] As a preferred embodiment of this invention, the positioning component further includes a second spring fixedly disposed between the guide rod and the adjusting plate, and a telescopic limiting rod is provided on the inner side of the second spring.

[0012] As a preferred embodiment of the present invention, the guide assembly further includes a limiting plate fixedly disposed at the end of the guide rod, wherein the limiting plate, the end of the guide rod, and the guide plate form a U-shape, and the airbag is disposed inside the U-shape.

[0013] As a preferred embodiment of this invention, the guide plate is divided into two sections, one of which is parallel to the guide rod, and the other of which is inclined away from the guide rod.

[0014] As a preferred embodiment of the present invention, the guide assembly further includes an inflation part disposed on the adjustment plate for inflating the airbag, and the deflation of the airbag is adjusted by the inflation part when the guide rod moves.

[0015] As a preferred embodiment of this utility model, the inflation part includes a fixed tube installed on the adjustment plate. The fixed tube is connected to the airbag through a flexible tube. A piston rod is slidably arranged inside the fixed tube, and the piston rod is fixedly arranged at the end of the guide rod. An air hole for gas to flow out is opened on the fixed tube.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention, through the guide rod and guide plate in the equipment, can effectively adjust the position of the adjusting plate and the moving frame, ensuring that the stator and the housing are always on the same axis during assembly. Simultaneously, during stator assembly, the expansion of the air bladder effectively fills the gap between the stator and the housing, thus ensuring that the distance between the stator and the inner wall of the housing remains constant during assembly. This prevents tilting during assembly, which could lead to stator damage, and further improves the accuracy of equipment assembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure from the rear view of this utility model;

[0020] Figure 3 This is a partial rear-view structural schematic diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure from a partial frontal view of this utility model.

[0022] In the picture:

[0023] 1. Movable frame; 2. Support component; 3. Adjustment plate; 4. First spring; 5. Guide rod; 6. Limiting plate; 7. Guide plate; 8. Airbag; 9. Second spring; 10. Limiting rod; 11. Fixing tube; 12. Air hole; 13. Piston rod. Detailed Implementation

[0024] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0025] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1 to 4 As shown in the figure, the motor stator positioning and assembly auxiliary fixture provided in this embodiment of the utility model includes a movable frame 1, a support member 2 disposed on the movable frame 1, and further includes:

[0027] The movable setting is on the movable frame 1, and the adjustment disc 3 is used to adjust the position of the support 2;

[0028] A positioning component, set on the adjustment plate 3, is used for adjusting the position of the support 2, including a guide rod 5 that is slidably set on the adjustment plate 3 at equal angles;

[0029] A guide assembly, mounted on the guide rod 5, is used to guide the stator and the housing. It includes a guide plate 7 fixedly mounted on the end of the guide rod 5, and an air bladder 8 for gap filling is provided on the upper side of the guide plate 7.

[0030] As a preferred embodiment of this utility model, an adjustment groove is provided on the adjustment plate 3, the end of the moving frame 1 is set in the adjustment groove, and multiple first springs 4 are set at equal angles between the end of the moving frame 1 and the adjustment groove, which facilitates the control of the direction of movement of the adjustment plate 3, so that when the equipment is in use, the axis position of the adjustment plate 3 can be adjusted according to the swing of the guide rod 5, thereby making the stator more accurately assembled in the machine housing.

[0031] As a preferred embodiment of this utility model, a slider is fixedly provided on the inner side of the guide rod 5, and the guide rod 5 is slidably mounted on the adjustment plate 3 through the slider, which effectively limits the movement direction of the guide rod 5, making it more convenient to move, and at the same time preventing the guide rod 5 from deviating when moving.

[0032] As a preferred embodiment of this utility model, the positioning component further includes a second spring 9 fixedly disposed between the guide rod 5 and the adjusting plate 3. A telescopic limiting rod 10 is provided on the inner side of the second spring 9 to facilitate the reset of the guide rod 5. At the same time, it avoids the bending of the second spring 9 due to the change in the length of the second spring 9 when the guide rod 5 is stretched, thus further ensuring the movement path of the guide rod 5.

[0033] As a preferred embodiment of this utility model, the guide assembly further includes a limiting plate 6 fixedly disposed at the end of the guide rod 5. The limiting plate 6, the end of the guide rod 5, and the guide plate 7 form an inverted shape. An airbag 8 is disposed inside the inverted shape, so that the guide assembly can contact the side of the housing, thereby keeping the stator on the axis of the housing when it moves, thus ensuring the precise assembly and assembly stability between the housing and the stator.

[0034] As a preferred embodiment of this utility model, the guide plate 7 is divided into two sections, one of which is parallel to the guide rod 5, and the other of which is inclined away from the guide rod 5. The inclined section is easy to insert into the housing and contacts the inner wall of the housing. According to the shape of the guide plate 7, the position of the adjustment plate 3 can be effectively adjusted by the guide rod 5, thereby further improving the stability and convenience of equipment assembly.

[0035] As a preferred embodiment of this utility model, the guide assembly also includes an inflation part disposed on the adjustment plate 3 for inflating the airbag 8. When the guide rod 5 moves, the inflation part adjusts the deflation of the airbag 8, which facilitates the control of the expansion and deflation of the airbag 8, thereby allowing the stator to adapt to the gap with the inner wall of the housing and preventing the equipment from shifting during assembly.

[0036] As a preferred embodiment of this utility model, the inflation part includes a fixed tube 11 installed on the adjustment plate 3. The fixed tube 11 is connected to the air bag 8 through a hose. A piston rod 13 is slidably arranged inside the fixed tube 11, and the piston rod 13 is fixedly arranged at the end of the guide rod 5. An air hole 12 for gas to flow out is opened on the fixed tube 11. By moving the piston rod 13 inside the fixed tube 11, the air bag 8 can be effectively inflated, thereby ensuring that the stator and the inner wall of the housing always maintain an equal distance.

[0037] The working principle of this utility model:

[0038] refer to Figure 1 The stator is fixed by the existing support member 2, and the housing is fixed by the existing clamping member. Then, the stator is moved by pushing the support member 2 through the existing moving component. At this time, the adjusting plate 3 and the components set on the adjusting plate 3 move at the same time.

[0039] refer to Figure 3When the adjusting plate 3 moves to a certain distance, the guide plate 7 and the limiting plate 6 at the end of the adjusting plate 3 will contact the end of the housing. At this time, the guide plate 7 is located inside the housing, and the limiting plate 6 is located outside the housing. Since the guide plate 7 is divided into two ends, one is a smooth section and the other is an inclined section, when the inclined section enters the housing, one side of the guide plate 7 will contact the inner wall of the housing. As the guide rod 5 continues to move, the inner wall of the housing gradually contacts the smooth section. According to the push of the smooth section, the three guide plates 7 are positioned, so that the housing is located at the position of the axis of the adjusting plate 3. After the positioning of the guide plate 7, the moving frame 1 will move in the adjusting groove opened on the adjusting plate 3, thereby adjusting the position of the adjusting plate 3 and the housing. When the adjusting plate 3 is adjusted, it can fully compress multiple first springs 4 or release the elasticity of a certain first spring 4. The compression and release of the first spring 4 are carried out according to the adjustment position.

[0040] When the end of the housing is located between the limiting plate 6 and the guide plate 7, and in contact with the end of the guide rod 5, the guide rod 5 will move on the adjusting plate 3 as the adjusting plate 3 continues to move. At this time, the second spring 9 is gradually stretched, and at the same time, the piston rod 13 will slide in the fixed tube 11. Since a vent 12 is provided on the fixed tube 11, the gas will be discharged when the piston rod 13 just moves, and it will not control the expansion of the air bag 8. When the end of the stator contacts the inner wall of the end of the housing, the moving position of the fixed tube 11 is on one side of the vent 12. At this time, as the adjusting plate 3 pushes the stator to move, the piston rod 13 will gradually squeeze out the gas in the fixed tube 11 and let it enter the air bag 8 through the hose. At this time, the air bag 8 gradually expands. Since the three air bags 8 expand at the same time, the air bag 8 will fill the space between the electron and the inner wall of the housing. As the stator continues to move, the air bag 8 can effectively ensure that it always maintains an equal distance from the inner wall of the housing during assembly.

[0041] After the stator is fully installed, the adjusting plate 3 is moved in the opposite direction, and the support 2 is separated from the inner wall of the stator. At this time, the second spring 9 gradually returns to its original position, while the piston rod 13 gradually extracts the gas from the airbag 8. At the same time, the guide rod 5 gradually returns to its original position. When the adjusting plate 3 is fully returned to its original position, the guide rod 5 and the airbag 8 return to their original positions at the same time, and the next assembly can be carried out.

[0042] This invention, through the guide rod 5 and guide plate 7 in the equipment, can effectively adjust the position of the adjusting plate 3 and the moving frame 1, ensuring that the stator and the housing are always on the same axis during assembly. At the same time, during the assembly process, the expansion of the air bag 8 effectively fills the gap between the stator and the housing, thus ensuring that the distance between the stator and the inner wall of the housing remains the same during assembly, preventing tilting during assembly and thus preventing damage to the stator, further improving the accuracy of equipment assembly.

[0043] 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.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning and assembling auxiliary fixture for a motor stator, comprising a moving frame (1), a support (2) arranged on the moving frame (1), characterized in that: Also include: The activity is set on the mobile frame (1), the adjusting disc (3) for the position adjustment of the support (2); Positioning assembly, set on the adjusting disc (3), for position adjustment of support (2), including equiangular sliding guide rod (5) set on the adjusting disc (3); Guide assembly, set on the guide rod (5), for assembly guide of stator and shell, including guide plate (7) fixedly arranged on the end of guide rod (5), and the upper side of guide plate (7) is provided with air bag (8) for gap filling.

2. A fixture for positioning and assembling a stator of an electric machine according to claim 1, characterized in that: The adjusting disc (3) is provided with an adjusting groove, and the end of the mobile frame (1) is arranged in the adjusting groove, and a plurality of first springs (4) are arranged at equal angles between the end of the mobile frame (1) and the adjusting groove.

3. A fixture for positioning and assembling a stator of an electric machine according to claim 2, characterized in that: The inner side of the guide rod (5) is fixedly provided with a sliding bar, and the guide rod (5) is slidably arranged on the adjusting disc (3) through the sliding bar.

4. A fixture for positioning and assembling a stator of an electric machine according to claim 3, characterized in that: The positioning assembly further comprises a second spring (9) fixedly arranged between the guide rod (5) and the adjusting disc (3), and the inner side of the second spring (9) is provided with an extension limiting rod (10).

5. A fixture for positioning and assembling a stator of an electric machine according to claim 4, characterized in that: The guide assembly further comprises a limiting plate (6) fixedly arranged at the end of the guide rod (5), and the limiting plate (6), the end of the guide rod (5) and the guide plate (7) form a U-shaped, and the air bag (8) is arranged inside the U-shaped.

6. A fixture for positioning and assembling a stator of an electric machine according to claim 5, characterized in that: The guide plate (7) is divided into two sections, one of which is parallel to the guide rod (5), and the other section away from the guide rod (5) is inclined.

7. A fixture for positioning and assembling a stator of an electric machine according to claim 6, characterized in that: The guide assembly further comprises an inflation part arranged on the adjusting disc (3) for inflating the air bag (8), and the deflation of the air bag (8) is adjusted by the inflation part when the guide rod (5) moves.

8. A fixture for positioning and assembling a stator of an electric machine according to claim 7, characterized in that: The inflation part comprises a fixed tube (11) mounted on the adjusting disc (3), the fixed tube (11) is connected with the air bag (8) through a hose, a piston rod (13) is slidably arranged in the fixed tube (11), and the end of the guide rod (5) is fixedly arranged, and the fixed tube (11) is provided with a gas hole (12) for gas outflow.

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