Aligning tool for stator teeth of axial flux motor

Abstract

The utility model belongs to the technical field of axial magnetic flux motors, and discloses an axial magnetic flux motor stator tooth part alignment tool, which comprises a guide ring plate, ring grooves matched with stator iron cores are arranged on two side walls of the guide ring plate, a plurality of positioning ribs which are annularly arranged at equal intervals are arranged in the ring grooves, and the positioning ribs are arranged in the guide ring plate. Each positioning rib is matched with a notch of a stator iron core, two limiting mechanisms are arranged on the guide ring plate side by side, and the two limiting mechanisms vertically limit the two stator iron cores respectively; according to the utility model, the problem of stator tooth part dislocation of a double-stator structure is solved, the hole sites at the backs of the two stator iron cores can be completely the same as the hole sites on the casing in precision, and the influence on the motor due to the fact that the stator tooth parts cannot be completely aligned is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flux motors, in particular to a stator teeth alignment tool for an axial flux motor. Background Art

[0002] The axial flux motor is a special type of motor, characterized by the magnetic flux flowing along the axial direction of the motor (i.e. along the axis of the motor). It is mainly divided into single stator / single rotor structure, single stator / dual rotor structure, dual stator / single rotor structure, multi-stator / multi-rotor structure, and coreless structure.

[0003] like Figure 1 As shown in the figure, for the traditional dual-stator / single-rotor axial flux motor, the motor is prone to the difficulty of not being able to fully align the dual stator teeth during assembly. During motor operation, due to the current flowing through the area where the stator teeth are not aligned, the two stators flow in opposite currents at the same place, which will cause additional motor losses; the two stators are fixed to the casing with bolts, but the use of threaded holes will cause large errors in the positioning of the stators, and the stator core is processed using a rolling process, which cannot guarantee the position accuracy of the processed holes. Utility Model Content

[0004] The main technical problem to be solved by the utility model is to provide an axial flux motor stator teeth alignment tool, which solves the problem of stator teeth misalignment in a double-stator structure, and can make the hole positions on the back of the two stator cores completely consistent with the hole positions on the casing, thereby reducing the impact on the motor caused by the inability to fully align the stator teeth.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A stator tooth alignment tool for an axial flux motor includes a guide ring plate. Both side walls of the guide ring plate are provided with annular grooves that are compatible with the stator core. A plurality of positioning ribs arranged at equal intervals in an annular shape are provided in the annular grooves. Each positioning rib is compatible with a notch in the stator core. Two limiting mechanisms are arranged side by side on the guide ring plate, and the two limiting mechanisms respectively limit the vertical position of the two stator cores.

[0007] The following is a further optimization of the above technical solution by the present invention:

[0008] The limiting mechanism includes a plurality of fixing rods, and a plurality of pairs of mounting holes extending radially are provided in the guide ring plate. Each fixing rod is provided in a corresponding mounting hole, and a stopper is fixed to one end of each fixing rod extending out of the outer circumference of the guide ring plate, and a pin hole is provided at one end of each fixing rod extending out of the inner circumference of the guide ring plate.

[0009] Further optimization: the fixing rods are arranged in pairs.

[0010] Further optimization: the two side walls of the annular groove are respectively in close contact with the outer circumferential surface and the inner circumferential surface of the stator core.

[0011] Further optimization: each of the positioning ribs is arranged along the radial extension of the guide ring plate.

[0012] Further optimization: each of the annular grooves is provided with five positioning ribs.

[0013] The utility model adopts the above technical solution, which has the following beneficial effects:

[0014] 1. The utility model limits the axial rotation of the stator core by fixing the outer circle of the stator core and then aligning and fitting the notches of the stator teeth with the positioning ribs. At the same time, the setting of the annular groove on the guide ring plate limits the movement of the stator core in the horizontal direction, and the fixing rod and the stator teeth cooperate to limit the movement of the stator core in the vertical direction.

[0015] The three work together to achieve the goal of complete alignment of the stator teeth on the two stator cores, thereby solving the problem of stator tooth misalignment in the dual-stator structure, avoiding motor losses caused by stator tooth misalignment, and further reducing the impact on the motor caused by the inability to fully align the stator teeth.

[0016] 2. The setting of the guide ring plate ensures that the stator core is in a coaxial state inside the casing, making it a whole. Then the threaded holes on the back of the stator core are processed to improve the drilling accuracy of the threaded holes on the back of the stator core, so that the hole positions of the two stator cores on the back are completely consistent with the hole positions of the casing during assembly.

[0017] 3. The utility model has a simple structure, is easy to process, and is convenient to install, which reduces the processing difficulty and cost investment of tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 Schematic diagram of the structure of the traditional double-stator structure with misaligned stator teeth;

[0020] Figure 2 A schematic diagram of an embodiment of the present utility model;

[0021] Figure 3 for Figure 2 Schematic cross-sectional view along the AA direction;

[0022] Figure 4 This is a schematic diagram of the installation of an embodiment of the utility model;

[0023] Figure 5 for Figure 4 Schematic diagram of the right side;

[0024] Figure 6 for Figure 5 Schematic cross-sectional view along the BB direction;

[0025] Figure 7 for Figure 5 Schematic cross-sectional view in the CC direction.

[0026] In the figure: 1-guide ring plate; 2-stator core; 3-ring groove; 4-positioning rib; 5-limiting mechanism; 51-fixing rod; 52-mounting hole; 53-stop block; 54-pin hole; 6-housing. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0028] like Figure 2-Figure 7 As shown together, a stator tooth alignment tool for an axial flux motor includes a guide ring plate 1. Both side walls of the guide ring plate 1 are provided with annular grooves 3 that are compatible with the stator core 2. A plurality of positioning ribs 4 arranged at equal intervals in an annular shape are provided in the annular grooves 3. Each positioning rib 4 is compatible with the notch of the stator core 2. Two limiting mechanisms 5 are arranged side by side on the guide ring plate 1, and the two limiting mechanisms 5 respectively limit the two stator cores 2 vertically.

[0029] Compared with the accuracy of the original stator core 2 being drilled separately on the back, the present invention fixes the two stator cores 2 into a whole, and turns the inner and outer circles of the rolled irregular stator core 2 into a combined component, thereby improving the processing accuracy of the threaded holes on the back of the stator core 2.

[0030] In this embodiment, two stator cores 2 fixed as a whole are placed in the casing 6 for threaded hole processing, so that the hole positions on the back of the two stator cores 2 are completely the same as the hole positions on the casing 6 during processing, thereby improving the processing accuracy and facilitating the subsequent assembly of the motor.

[0031] In this embodiment, the housing 6 includes a left housing and a right housing that are buckled together, and the left housing and the right housing are fixed together by screws.

[0032] In this embodiment, a structure is also provided inside the casing 6 to restrict the outer cylindrical surface and inner hole surface of the stator core 2 , thereby ensuring that the stator core 2 is coaxial with the casing 6 when inside the casing 6 .

[0033] Therefore, it is only necessary to place the stator core 2 fixed as a whole into the housing 6 for fixation, so that the stator core 2 will not have tooth misalignment during assembly, thereby solving the problem of the teeth of the double stator structure not being able to be fully aligned, and avoiding the situation where additional motor losses are generated due to tooth misalignment.

[0034] Among them, the limiting mechanism 5 includes a plurality of fixing rods 51, and a plurality of pairs of mounting holes 52 extending radially are provided in the guide ring plate 1. Each fixing rod 51 is provided in the corresponding mounting hole 52, and a stopper 53 is fixed on one end of each fixing rod 51 extending from the outer circumference of the guide ring plate 1, and a pin hole 54 is provided on one end of each fixing rod 51 extending from the inner circumference of the guide ring plate 1.

[0035] In this embodiment, the installation position of the fixing rod 51 matches the teeth of the stator core 2 .

[0036] In this embodiment, the positioning ribs 4 limit the rotation of the stator core 2, the side walls of the annular groove 3 limit the horizontal movement of the stator core 2, and the fixing rods 51 cooperate with the teeth of the stator core 2 to limit the vertical movement of the stator core 2.

[0037] In this embodiment, the guide ring plate 1 , the positioning ribs 4 and the fixing rods 51 cooperate with each other to restrict and fix the symmetric plane of the stator core 2 , thereby achieving the effect of completely aligning the teeth of the two stator cores 2 .

[0038] The three cooperate with each other to achieve the goal of complete alignment of the stator teeth on the two stator cores, thereby solving the problem of stator tooth misalignment in the dual-stator structure and reducing the impact on the motor caused by the inability to fully align the stator teeth.

[0039] like Figure 3-Figure 7 As shown, the fixing rods 51 are arranged in pairs.

[0040] like Figure 7 As shown, the two side walls of the annular groove 3 are respectively in close contact with the outer circumferential surface and the inner circumferential surface of the stator core 2.

[0041] like Figure 2 and Figure 3 As shown together, each positioning rib 4 is arranged along the radial extension of the guide ring plate 1 .

[0042] Each annular groove 3 is provided with five positioning ribs 4 .

[0043] The specific use of the tooth alignment tool is as follows:

[0044] S1. Place a stator core 2 upward, align the positioning ribs 4 on the guide ring plate 1 with the notches of the teeth of the stator core 2, and then embed the notches into the positioning ribs 4.

[0045] S2. Insert the fixing rods 51 into the corresponding mounting holes 52 of the stator core 2 one by one, so that the stoppers 53 are pressed tightly against the outer circumference of the guide ring plate 1 , and insert the pins into the pin holes 54 .

[0046] S3. Repeat the above steps to fix the other stator core 2 using the same method, fix the two stator cores 2 and the tooth alignment fixture into a whole, and complete the alignment assembly of the two stator cores 2.

[0047] S4. Place the assembled whole into the housing 6 and tighten it with screws.

[0048] S5. Process the threaded holes on the back of the stator core 2. After the threaded holes are processed, the above-mentioned whole can be dismantled and the corresponding top marks are marked to facilitate the assembly of the motor later.

[0049] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stator teeth alignment tool for an axial flux motor, characterized in that: The invention comprises a guide ring plate (1), wherein both side walls of the guide ring plate (1) are provided with annular grooves (3) adapted to the stator core (2), a plurality of positioning ribs (4) arranged at equal intervals in an annular shape are provided in the annular grooves (3), each positioning rib (4) being adapted to the notch of the stator core (2), and two limiting mechanisms (5) are arranged side by side on the guide ring plate (1), and the two limiting mechanisms (5) respectively perform vertical limiting on the two stator cores (2).

2. The axial flux motor stator teeth alignment tool according to claim 1, characterized in that: The limiting mechanism (5) includes a plurality of fixing rods (51), a plurality of pairs of mounting holes (52) extending radially are provided in the guide ring plate (1), each fixing rod (51) is provided in a corresponding mounting hole (52), a stopper (53) is fixed to one end of each fixing rod (51) extending from the outer circumference of the guide ring plate (1), and a pin hole (54) is provided at one end of each fixing rod (51) extending from the inner circumference of the guide ring plate (1).

3. The axial flux motor stator teeth alignment tool according to claim 2, characterized in that: The fixing rods (51) are arranged in pairs.

4. The axial flux motor stator teeth alignment tool according to claim 3, characterized in that: The two side walls of the annular groove (3) are respectively in close contact with the outer circumferential surface and the inner circumferential surface of the stator core (2).

5. The axial flux motor stator teeth alignment tool according to claim 4, characterized in that: Each of the positioning ribs (4) is arranged along the radial direction of the guide ring plate (1).

6. The axial flux motor stator teeth alignment tool according to claim 5, characterized in that: Each of the annular grooves (3) is provided with five positioning ribs (4).

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