Assembly tool for assembling rotor and stator of permanent magnet synchronous motor

Abstract

The utility model provides an assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor, which comprises a supporting mechanism arranged on a base, the supporting mechanism comprises a positioning seat and a positioning flange, and a positioning pin is arranged on the positioning flange; the guide mechanism is movably arranged on the supporting mechanism, the guide mechanism is used for positioning and clamping the rotor to be matched with a stator in the motor shell, and the guide mechanism can adjustably move up and down in the vertical direction to be close to or away from the positioning seat; the driving mechanism is connected between the upper portion of the supporting mechanism and the guiding mechanism, and the driving mechanism drives the guiding mechanism to vertically move up and down through rotation adjustment. The positioning pin provides positioning for the motor casing, and the guide mechanism equipped with the rotor realizes vertical up-and-down movement through rotation adjustment of the driving mechanism, thereby ensuring that the rotor is stably and accurately installed at an assembly position in the stator through vertical downward movement. The positioning pin and the guide mechanism are matched to ensure that the inner circles of the rotor and the stator are not contacted and are uniformly spaced, so that the assembly precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor assembly, and in particular relates to an assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor. Background Art

[0002] Many new energy vehicle motors now use permanent magnet synchronous motors. The motor rotor is a permanent magnet, which means that the rotor is easily adsorbed to the inner wall of the stator due to strong magnetic force during assembly. Therefore, when assembling the rotor, consideration should be given to overcoming the rotor magnetic force. There are two common ways to assemble the existing motor rotor into the motor stator:

[0003] 1. Directly inserting the motor rotor into the motor stator manually, relying entirely on the motor rotor's own gravity to assemble it in place, there is a high probability that the motor rotor will be damaged, the insulation paper inside the stator will be scratched, or the bearing on the motor rotor shaft will not be assembled in place, and it requires a high level of operator proficiency;

[0004] 2. Using automated manipulators for assembly. This solution has accurate positioning and high efficiency, but it has a very obvious disadvantage - high cost and is not suitable for manual assembly and product trial production stages.

[0005] Therefore, it is urgent to propose a new assembly tool suitable for fastening and assembling the rotor and stator in a permanent magnet synchronous motor. Utility Model Content

[0006] The purpose of the utility model is to provide an assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor, so as to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides an assembly tool for assembling a permanent magnet synchronous motor rotor and a stator, comprising a base for being placed flat on a desktop, the base is also provided with a supporting mechanism, the supporting mechanism comprises a positioning seat and a positioning flange arranged on the base, the positioning flange is provided with a positioning pin, the positioning seat is used to provide a pre-positioning for the rotor before the rotor is installed, and the positioning flange and the positioning pin provide positioning for the motor housing;

[0008] A guide mechanism is movably arranged on the support mechanism, and the guide mechanism is used to position and clamp the rotor to match the stator in the motor housing. The guide mechanism can be adjusted to move up and down in the vertical direction to approach or move away from the positioning seat. When the guide mechanism moves vertically downward, it drives the rotor to be installed into the stator of the motor housing to ensure that the stator and the rotor do not contact each other during installation;

[0009] The driving mechanism is connected between the upper part of the supporting mechanism and the guiding mechanism, and the driving mechanism is adjusted by rotation to drive the guiding mechanism to move vertically up and down.

[0010] A further implementation scheme of the utility model is that the support mechanism includes a base, a support column and a top plate, and the top plate is fixedly connected to the base through the support column.

[0011] A further implementation scheme of the utility model is that the guide mechanism includes a guide shaft and a pressure plate, the guide shaft is vertically fixedly connected between the base and the top plate, the pressure plate is horizontally arranged and slidably connected to the guide shaft through a copper sleeve, and a guide seat is also provided at the bottom of the pressure plate, the guide seat can position and clamp the rotor and corresponds to the top of the positioning seat.

[0012] A further implementation scheme of the utility model is that the driving mechanism includes a screw and a bearing seat, the bearing seat is fixed on the upper part of the pressure plate and is opposite to the guide seat up and down, a screw nut is embedded in the top plate, the screw passes through the screw nut and is threadedly connected to the screw nut, and the bottom end of the screw is rotatably connected to the bearing seat.

[0013] A further implementation scheme of the utility model is that a deep groove ball bearing and a thrust ball bearing are sleeved on the bottom end of the screw rod, and both the deep groove ball bearing and the thrust ball bearing are rollingly matched with the inside of the bearing seat, and the deep groove ball bearing is on the upper part of the thrust ball bearing.

[0014] A further implementation scheme of the utility model is that a first retaining ring and a second retaining ring are also provided in the bearing seat, the first retaining ring is embedded in the bearing seat and abuts against the upper end surface of the deep groove ball bearing, and the second retaining ring is embedded in the screw rod and abuts against the lower end surface of the deep groove ball bearing.

[0015] A further implementation scheme of the utility model is that a handle is fixed to the top end of the screw rod.

[0016] The beneficial effects of the utility model are:

[0017] The assembly tooling has a simple structure, low cost and is easy to operate, and is particularly suitable for the initial test stage of motor research and development, which is beneficial to saving motor research and development costs and helping to improve research and development quality.

[0018] The motor housing is positioned through the positioning flange and the positioning pin, and the guide mechanism equipped with the rotor realizes vertical up and down movement through the rotation adjustment of the driving mechanism, which can strictly ensure the vertical downward movement to stably and accurately install the rotor to the assembly position in the stator, completing the positioning and fastening assembly of the rotor and stator, and the cooperation of the positioning pin and the guide mechanism ensures that the inner circles of the rotor and the stator do not contact and the spacing is uniform, thereby comprehensively improving the accuracy of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of an assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor according to the utility model;

[0020] Figure 2 This is a schematic cross-sectional structural diagram of an assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor according to the utility model;

[0021] Figure 3 for Figure 2 A magnified schematic diagram of position A in the middle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0023] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any and specific values ​​should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0025] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words 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, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0026] It should be noted that, in the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0027] See also Figure 1 and Figure 2 In this embodiment, an assembly tool for assembling a permanent magnet synchronous motor rotor and a stator is provided, including a base 11 for being placed flat on a table, and a supporting mechanism 1 is provided on the base 11. The assembly tool for assembling a permanent magnet synchronous motor rotor and a stator also includes a guiding mechanism 2 and a driving mechanism 3.

[0028] In detail, the support mechanism 1 also includes a positioning seat 10 and a positioning flange 12 arranged on the base 11, wherein a positioning pin 13 is provided on the positioning flange 12, the positioning flange 12 provides positioning for the motor casing, and the positioning seat 10 provides pre-positioning for the rotor before assembly; in detail, the support mechanism 1 includes a base 11, a support column 14 and a top plate 15, the top plate 15 is fixedly connected to the base 11 through the support column 14, the positioning seat 10 is fixed on the base 11, the motor casing is placed on the positioning flange 12 through the positioning pin 13, and a stator is provided in the motor casing.

[0029] The guide mechanism 2 is movably arranged on the support mechanism 1, and the guide mechanism 2 is used to position and clamp the rotor to match the stator in the motor housing. The guide mechanism 2 can be adjusted to move up and down in the vertical direction to approach or move away from the positioning seat 10. When the guide mechanism 2 moves vertically downward, it drives the rotor to be installed into the stator of the motor housing accordingly, so that the stator and the rotor do not contact each other, thereby preventing the stator and the rotor from being adsorbed together due to magnetic force and causing damage.

[0030] In detail, the guide mechanism 2 includes a guide shaft 20 and a pressure plate 21. The guide shaft 20 is provided with two and is vertically fixedly connected between the base 11 and the top plate 15. The pressure plate 21 is horizontally arranged and is slidably connected to the guide shaft 20 through a copper sleeve 22. A guide seat 23 is also provided at the bottom of the pressure plate 21. The guide seat 23 can be adapted to position and clamp the rotor and corresponds to the top of the positioning seat 10. Therefore, when the pressure rod and the copper sleeve 22 slide on the guide shaft 20 together, the guide seat 23 moves downward and the rotor is installed in the stator. During the movement, the rotor maintains a uniform interval with the stator and does not contact each other, thereby improving the assembly accuracy.

[0031] The driving mechanism 3 is connected and arranged between the upper part of the supporting mechanism 1 and the guiding mechanism 2 , and the driving mechanism 3 is adjusted by rotation to drive the guiding mechanism 2 to move vertically up and down.

[0032] Specifically, the driving mechanism 3 includes a screw 30 and a bearing seat 31. The bearing seat 31 is fixed to the upper part of the pressure plate 21 and is opposite to the guide seat 23. A screw nut 32 is embedded on the top plate 15. The screw 30 passes through the screw nut 32 and is threadedly connected with the screw nut 32. The bottom end of the screw 30 is rotatably connected to the bearing seat 31. Figure 3A deep groove ball bearing 33 and a thrust ball bearing 34 are sleeved on the bottom end of the screw rod 30. The deep groove ball bearing 33 and the thrust ball bearing 34 are both rollingly matched with the inside of the bearing seat 31. The deep groove ball bearing 33 is on the upper part of the thrust ball bearing 34. The deep groove ball bearing 33 and the bearing seat 31 are radially matched, mainly bearing the radial load of the screw rod 30. The thrust ball bearing 34 and the bottom of the bearing seat 31 are matched, mainly bearing the axial force of the screw rod 30, and converting the rotational motion into a downward thrust. A first retaining ring 35 and a second retaining ring 36 are also provided in the bearing seat 31. The first retaining ring 35 is embedded in the bearing seat 31 and abuts against the upper end face of the deep groove ball bearing 33 to limit the upward movement of the deep groove ball bearing 33 relative to the bearing seat 31. The second retaining ring 36 is embedded in the screw rod 30 and abuts against the deep groove ball bearing. The lower end surface of the bearing 33 limits the axial separation of the screw 30 and the deep groove ball bearing 33. The first retaining ring 35 and the second retaining ring 36 both play a limiting role to prevent the screw 30 from running out of the bearing seat 31, and keep the screw 30 only rotating in the bearing seat 31. By turning the handle 37 on the top of the screw 30, the screw 30 is driven to rotate, and the threaded cooperation between the screw 30 and the screw nut 32 produces a lifting action, thereby driving the pressure plate 21 to move downward, so that the rotor is accurately assembled into the stator in the vertical direction, and can strictly ensure that the vertical downward movement will stably and accurately install the rotor in the assembly position in the stator, and through the cooperation of the positioning pin 13 on the positioning flange 12 and the guide mechanism 2, it is ensured that the inner circle of the rotor and the stator does not contact and the spacing is uniform, which comprehensively improves the accuracy and efficiency of assembly. In addition, the assembly tooling has a simple structure, low cost and convenient operation, and is particularly suitable for the initial test stage of motor research and development, which is conducive to saving motor research and development costs and helping to improve research and development quality.

[0033] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor, comprising a base for being placed flat on a table, characterized in that: The base is also provided with a supporting mechanism, which includes a positioning seat and a positioning flange arranged on the base, the positioning flange is provided with a positioning pin, the positioning seat is used to provide a pre-positioning for the rotor before the rotor is installed, and the positioning flange and the positioning pin provide positioning for the motor housing; A guide mechanism is movably arranged on the support mechanism, and the guide mechanism is used to position and clamp the rotor to match the stator in the motor housing. The guide mechanism can be adjusted to move up and down in the vertical direction to approach or move away from the positioning seat. When the guide mechanism moves vertically downward, it drives the rotor to be installed into the stator of the motor housing to ensure that the stator and the rotor do not contact each other during installation; The driving mechanism is connected and arranged between the upper part of the supporting mechanism and the guiding mechanism, and the driving mechanism is adjusted by rotation to drive the guiding mechanism to move vertically up and down.

2. The assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor according to claim 1, characterized in that: The support mechanism comprises a base, a support column and a top plate, and the top plate is fixedly connected to the base via the support column.

3. The assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor according to claim 2, characterized in that: The guide mechanism includes a guide shaft and a pressure plate. The guide shaft is vertically fixedly connected between the base and the top plate. The pressure plate is horizontally arranged and slidably connected to the guide shaft through a copper sleeve. A guide seat is also provided at the bottom of the pressure plate. The guide seat can position and clamp the rotor and corresponds to the top of the positioning seat.

4. The assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor according to claim 3, characterized in that: The driving mechanism includes a screw and a bearing seat. The bearing seat is fixed on the upper part of the pressure plate and is opposite to the guide seat up and down. A screw nut is embedded in the top plate. The screw passes through the screw nut and is threadedly connected with the screw nut, and the bottom end of the screw is rotatably connected to the bearing seat.

5. The assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor according to claim 4, characterized in that: The bottom end of the screw rod is sleeved with a deep groove ball bearing and a thrust ball bearing, both of which are rollingly matched with the inside of the bearing seat, and the deep groove ball bearing is located on the upper part of the thrust ball bearing.

6. The assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor according to claim 5, characterized in that: The bearing seat is also provided with a first retaining ring and a second retaining ring. The first retaining ring is embedded in the bearing seat and abuts against the upper end surface of the deep groove ball bearing. The second retaining ring is embedded on the screw rod and abuts against the lower end surface of the deep groove ball bearing.

7. The assembly tool for assembling a rotor and a stator of a permanent magnet synchronous motor according to claim 4, characterized in that: A handle is fixed on the top end of the screw rod.

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