Permanent magnet motor rotor magnetic steel installation guiding tool

Abstract

The utility model relates to a rotor magnetic steel installation guide tool for a permanent magnet motor, which is low in production cost and convenient to use, can prevent the end part of a rotor core from being warped and damaged when permanent magnet magnetic steel is installed, and can reduce the installation error rate of the permanent magnet magnetic steel, and comprises a guide tool plate, thirty rectangular guide notches are formed in the front face of the guide tool plate, and the circle center of a circle formed by the thirty guide notches coincides with the circle center of the guide tool plate; fifteen second nut avoiding holes are formed in the front face of the guiding tool plate, and two guiding notches are formed between every two adjacent second nut avoiding holes. A plurality of first long bolt through holes are formed in the front face of the guiding tool plate. A round through hole is formed in the front face of the guiding tool plate. The guide tool has the advantages that the guide tool not only can prevent the end part of the rotor core from fin damage when the permanent magnet steel is installed, but also can improve the installation efficiency of the permanent magnet steel, and can reduce the installation error rate of the permanent magnet steel.

Description

Technical Field

[0001] This utility model belongs to the field of permanent magnet motor manufacturing technology, specifically relating to a permanent magnet motor rotor magnet installation guide fixture. Background Technology

[0002] Our company produces a type of permanent magnet motor rotor, such as... Figure 1As shown, it includes a rotating shaft 1', a rotor core 2' formed by stacking multiple laminations, a rotor front baffle, a rotor rear baffle, multiple permanent magnets 3', fifteen permanent magnet front baffles 4', and fifteen permanent magnet rear baffles 5'. The upper end face of the rotor core 2' has a rotating shaft through-hole penetrating both the upper and lower end faces of the rotor core 2', and the symmetrical center line of the rotating shaft through-hole coincides with the symmetrical center line of the rotor core 2'. The upper end face of the rotor core 2' has multiple baffle mounting through-holes penetrating both the upper and lower end faces of the rotor core 2', and these through-holes are equidistantly distributed in a circle around the symmetrical center line of the rotor core 2'. The upper end face of the rotor core 2' has thirty permanent magnet mounting slots 6' penetrating both the upper and lower end faces of the rotor core 2', and three... Ten permanent magnet mounting slots 6' are distributed equidistantly in a circle around the symmetrical center line of the rotor core 2'. The upper end face of the rotor core 2' has thirty long bolt through holes penetrating both ends of the rotor core 2', and these thirty long bolt through holes are distributed equidistantly in a circle around the symmetrical center line of the rotor core 2'. A long bolt through hole is provided between two adjacent permanent magnet mounting slots 6'. The rotor front baffle has multiple front baffle through holes penetrating both sides of the rotor front baffle. The rotor front baffle has one shaft through hole penetrating both sides of the rotor front baffle. The rotor rear baffle has multiple rear baffle through holes penetrating both sides of the rotor rear baffle. The rotor rear baffle has one... Two through holes are provided, and the two through holes penetrate both sides of the rotor rear baffle. The rotating shaft 1' is installed in the through holes of the rotor core 2' through the rotor front baffle, rotor rear baffle, multiple long bolts, and multiple nuts (the shaft body of the rotating shaft 1' is inserted into the through holes; the front end face of the rotor core 2' is provided with a rotor front baffle, and the rear end face of the rotor core 2' is provided with a rotor rear baffle; after the corresponding front baffle through holes, baffle mounting through holes, and rear baffle through holes are aligned, they are fixed by a long bolt and a nut respectively, thus achieving the fixed installation of the rotating shaft 1' and the rotor core 2'). A permanent magnet 3' is installed in the permanent magnet mounting slot 6'. The front end face of the rotor core 2' is installed with a permanent magnet 3' through fifteen long bolts and a nut. Fifteen permanent magnet front baffles 4' (the fifteen permanent magnet front baffles 4' form an annular front baffle, which is used to block the permanent magnets 3' set in the permanent magnet mounting slots 6'; each permanent magnet front baffle 4' has a long bolt and a through hole that passes through both sides of the permanent magnet front baffle 4'; the annular front baffle has fifteen nut clearance slots that pass through both sides of the annular front baffle); the rear end face of the rotor core 2' is equipped with fifteen permanent magnet rear baffles 5' (the fifteen permanent magnet rear baffles 5' form an annular rear baffle, which is used to block the permanent magnets 3' set in the permanent magnet mounting slots 6') via fifteen long bolts and nuts.Each permanent magnet rear baffle 6' has a long bolt two-through hole that passes through both sides of the permanent magnet rear baffle 6'. The annular rear baffle has fifteen nut-avoidance grooves that pass through both sides of the annular rear baffle. In the assembly process of a permanent magnet motor rotor, the penultimate step is to insert permanent magnets 3' into the thirty permanent magnet mounting slots 6'. After the permanent magnets 3' are installed, the fifteen permanent magnet front baffles 4' are fixed to the front end face of the rotor core 2' by fifteen long bolts and fifteen nuts to form an annular front baffle. However, since the rotor core 2' is made of laminations (high permeability silicon steel sheets) stacked together... In some cases, during the loading of permanent magnets 3' into the rotor core 2', the strong magnetism of the permanent magnets 3' attracts the high-permeability silicon steel sheets, making it difficult to push them into the permanent magnet mounting slots 6'. This can even lead to damage to the high-permeability silicon steel sheets at the ends of the rotor core 2'. Furthermore, the permanent magnets 3' installed in different mounting slots 6' are distinguished by polarity. Since the mounting slots 6' on the rotor core 2' are not marked or labeled with the required polarity of the permanent magnets 3', the error rate of incorrect polarity installation during actual installation is relatively high. Therefore, our company has specifically developed a permanent magnet motor rotor magnet installation guide fixture. Utility Model Content

[0003] Design objective: To overcome the shortcomings of the prior art, this design aims to create a permanent magnet motor rotor magnet installation guide fixture that is not only low in production cost and easy to use, but also prevents warping damage to the rotor core end during permanent magnet installation, improves permanent magnet installation efficiency, and reduces the installation error rate of permanent magnets.

[0004] Design scheme: To achieve the above design objectives.

[0005] 1. The guide tool plate has thirty rectangular guide slots on its front side, which extend through both sides of the guide tool plate. These thirty guide slots are equidistantly distributed in a circle on the guide tool plate. The center of the circle formed by the thirty guide slots coincides with the center of the guide tool plate, and the symmetrical center lines along the length of the guide slots pass through the center of the guide tool plate. The guide tool plate also has fifteen nut clearance holes on its front side, which extend through both sides of the guide tool plate. The centers of these fifteen nut clearance holes are located on the circumference of the same circle. The center of the circle coincides with the center of the guide tool plate, and two guide slots are provided between two adjacent nut clearance holes; the front of the guide tool plate is provided with multiple long bolt through holes that pass through both sides of the guide tool plate, and the center of the long bolt through holes is located on the circumference of the circle containing the center of the nut clearance holes; the front of the guide tool plate is provided with a circular through hole that passes through both sides of the guide tool plate, and the center of the circular through hole coincides with the center of the guide tool plate. The design that the diameter of the circular through hole is larger than the diameter of the rotor front baffle is one of the technical features of this utility model. The purpose of this design is as follows: The front of the guide tool plate has thirty rectangular guide slots that extend through both sides of the guide tool plate. These thirty guide slots are equidistantly distributed in a circular pattern on the guide tool plate. The center of the circle formed by the thirty guide slots coincides with the center of the guide tool plate, and the symmetrical center lines along the length of the guide slots pass through the center of the guide tool plate. The front of the guide tool plate also has fifteen nut clearance holes that extend through both sides of the guide tool plate. The centers of these fifteen nut clearance holes are located on the circumference of the same circle, and the center of this circle coincides with the center of the guide tool plate. Two guide slots are provided between two adjacent nut clearance holes. Finally, the front of the guide tool plate has multiple long bolt through holes that extend through the guide tool plate. On both sides, the center of the hole of the long bolt is located on the circumference of the circle containing the center of the hole of the nut. The front of the guide tool plate is provided with a circular through hole that runs through both sides of the guide tool plate, and the center of the circular through hole coincides with the center of the guide tool plate. The diameter of the circular through hole is larger than the diameter of the rotor front baffle. In use, a permanent magnet motor rotor magnet installation guide fixture is installed on the front end face of the rotor core by multiple long bolts and nuts. At this time, fifteen nuts are located in the corresponding nut holes, and at the same time, thirty guide slots are connected one-to-one with the corresponding permanent magnet installation slots. The permanent magnet motor rotor magnet installation guide fixture is not only simple in structure (low production cost) but also easy to use. At the same time, the setting of the guide fixture can avoid damage to the rotor core end pieces and improve the installation efficiency of the permanent magnet.

[0006] 2. The guide tool plate is 20mm thick, and the number of holes for the long bolt is four. The central angle between three pairs of adjacent holes for the long bolt is 96°, and the central angle between the remaining pair of adjacent holes for the long bolt is 72°. The design that the central angle between the hole for the long bolt and the adjacent clearance hole for the nut is 12° is the second technical feature of this utility model. The purpose of this design is as follows: the guide tool plate is 20mm thick, and there are four holes for the long bolts. The central angle between three pairs of adjacent holes is 96°, and the central angle between the remaining pair of adjacent holes is 72°. The central angle between the holes for the long bolts and the adjacent clearance holes for the nuts is 12°. When the four holes for the long bolts are locked and fixed by the four long bolts and nuts, the permanent magnet motor rotor magnet installation guide tool is subjected to uniform force and will not cause deformation of the 20mm guide tool plate. In addition, the 20mm guide tool plate has a good magnetic shielding effect. In this way, while ensuring the use effect of the permanent magnet motor rotor magnet installation guide tool, the production cost of the permanent magnet motor rotor magnet installation guide tool is well controlled.

[0007] 3. The length and width dimensions of the guide groove are proportionally larger than the length and width dimensions of the corresponding end face of the permanent magnet, and proportionally smaller than the length and width dimensions of the permanent magnet mounting groove opening; the design of the guide groove having an inner wall surface roughness of 3.2 is the third technical feature of this utility model. The purpose of this design is that the length and width dimensions of the guide groove are proportionally larger than the length and width dimensions of the corresponding end face of the permanent magnet, and proportionally smaller than the length and width dimensions of the permanent magnet mounting groove opening; the inner wall surface roughness of the guide groove is 3.2, which can prevent the permanent magnet from getting stuck in the permanent magnet mounting groove opening when it is pushed in. Furthermore, because the inner wall surface roughness of the guide groove is 3.2, it can prevent the permanent magnet from being scratched during the process of passing through the guide groove.

[0008] 4. The guide tool plate has fifteen magnetic polarity marks (marked as N / S) on its front side, and fifteen magnetic polarity marks (marked as N / S) are respectively positioned at corresponding guide slots. This is the fourth technical feature of this utility model. The purpose of this design is that the guide tool plate has fifteen magnetic polarity marks (marked as N / S) on its front side, and the magnetic polarity marks (marked as N / S) are respectively positioned at corresponding guide slots. This intuitively distinguishes the polarity and avoids incorrect installation of strong magnets, thus improving work efficiency and ensuring installation quality.

[0009] 5. The guide tool plate has two positioning posts on its back. When the two positioning posts are engaged with the corresponding two long bolt through holes, the fifteen nut clearance holes and multiple long bolt through holes are respectively aligned with the corresponding long bolt through holes. This is the fifth technical feature of this utility model. The purpose of this design is that the guide tool plate has two positioning posts on its back. When the two positioning posts are engaged with the corresponding two long bolt through holes, the fifteen nut clearance holes and multiple long bolt through holes are respectively aligned with the corresponding long bolt through holes. At the same time, the thirty guide slots are respectively aligned with the corresponding permanent magnet mounting slots, thus further improving the installation efficiency of the permanent magnets.

[0010] Technical Solution: A permanent magnet motor rotor magnet installation guide fixture includes a guide tool plate made of aluminum alloy and in a circular shape. The front of the guide tool plate has thirty rectangular guide slots that extend through both sides of the guide tool plate. These thirty guide slots are equidistantly distributed in a circular pattern on the guide tool plate. The center of the circle formed by the thirty guide slots coincides with the center of the guide tool plate, and the symmetrical center lines along the length of the guide slots pass through the center of the guide tool plate. The front of the guide tool plate also has fifteen nut clearance holes that extend through the guide tool plate. On both sides of the guide tool plate, the centers of the fifteen nut clearance holes are located on the circumference of the same circle, and the center of this circle coincides with the center of the guide tool plate. Two guide slots are provided between two adjacent nut clearance holes. The front side of the guide tool plate is provided with multiple long bolt through holes, and the long bolt through holes penetrate both sides of the guide tool plate. The center of the long bolt through holes is located on the circumference of the circle containing the centers of the nut clearance holes. The front side of the guide tool plate is provided with a circular through hole that penetrates both sides of the guide tool plate, and the center of the circular through hole coincides with the center of the guide tool plate. The diameter of the circular through hole is larger than the diameter of the rotor front baffle.

[0011] Compared with the prior art, this utility model has two advantages: first, the installation guide tool for permanent magnet motor rotor magnets is not only low in production cost and easy to use, but also avoids damage to the rotor core end when installing permanent magnets; second, the installation guide tool for permanent magnet motor rotor magnets can not only improve the installation efficiency of permanent magnets, but also reduce the installation error rate of permanent magnets. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the rotor structure of a permanent magnet motor.

[0013] Figure 2 This is a schematic diagram of the main structure of a permanent magnet motor rotor magnet installation guide fixture.

[0014] Figure 3 This is a schematic diagram of the structure of a permanent magnet motor rotor magnet installation guide tool and the permanent magnet motor rotor during assembly.

[0015] Figure 4 This is a rear view structural diagram of a guide fixture for installing the rotor magnets of a permanent magnet motor. Detailed Implementation

[0016] Example 1: Refer to Appendix Figures 2-3 A permanent magnet motor rotor magnet installation guide fixture includes a guide tool plate 1, which is made of aluminum alloy and is circular. The front of the guide tool plate 1 has thirty rectangular guide slots 2, which extend through both sides of the guide tool plate 1. The thirty guide slots 2 are equidistantly distributed in a circle on the guide tool plate 1, with the center of the circle formed by the thirty guide slots 2 coinciding with the center of the guide tool plate 1, and the symmetrical center lines along the length of the guide slots 2 passing through the center of the guide tool plate 1. The front of the guide tool plate 1 also has fifteen nut clearance holes 3, which extend through the front of the guide tool plate 1. On both sides, the centers of the fifteen nut clearance holes 3 are located on the circumference of the same circle, and the center of this circle coincides with the center of the guide tool plate 1. Two guide slots 2 are provided between two adjacent nut clearance holes 3. The front side of the guide tool plate 1 has multiple long bolt through holes 4, and the long bolt through holes 4 penetrate both sides of the guide tool plate 1. The center of the long bolt through holes 4 is located on the circumference of the circle containing the centers of the nut clearance holes 3. The front side of the guide tool plate 1 has a circular through hole 5 penetrating both sides of the guide tool plate 1, and the center of the circular through hole 5 coincides with the center of the guide tool plate 1. The diameter of the circular through hole 5 is larger than the diameter of the rotor front baffle. The aluminum alloy plate used to make the guide tool plate 1 is non-magnetic, and the guide tool plate 1 is integrally formed by wire cutting of the aluminum alloy plate.

[0017] The guide tool plate 1 is 20mm thick, and there are four long bolt through holes 4. The central angle between three pairs of adjacent long bolt through holes 4 is 96°, and the central angle between the remaining pair of adjacent long bolt through holes 4 is 72°. The central angle between the long bolt through hole 4 and the adjacent nut clearance hole 3 is 12°.

[0018] The length and width dimensions of the guide slot 2 are proportionally larger than the length and width dimensions of the corresponding end face of the permanent magnet 3', and the length and width dimensions of the guide slot 2 are proportionally smaller than the length and width dimensions of the slot of the permanent magnet mounting groove 6'. The roughness of the inner wall surface of the guide slot 2 is 3.2.

[0019] The front of the guide tool plate 1 is provided with fifteen magnetic polarity marks 6 and fifteen magnetic polarity marks 7, and the magnetic polarity marks 6 and the magnetic polarity marks 7 are respectively set at the corresponding guide slots 2.

[0020] Example 2: Based on Example 1, refer to Appendix Figure 4 The back of the guide tool plate 1 is provided with two positioning posts 8. When the two positioning posts 8 are inserted into the corresponding two long bolt through holes, the fifteen nut clearance holes 3 and the multiple long bolt through holes 4 are respectively connected to the corresponding long bolt through holes. At the same time, the thirty guide slots 2 are respectively connected to the corresponding permanent magnet mounting slots 6'.

[0021] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of this utility model, these textual descriptions are merely simple textual descriptions of the design concept of this utility model, and not limitations on the design concept of this utility model. Any combination, addition, or modification that does not exceed the design concept of this utility model shall fall within the protection scope of this utility model.

Claims

1. A permanent magnet motor rotor magnet mounting guide tool, comprising a guide tool plate (1), the guide tool plate (1) is made of aluminum alloy plate and the guide tool plate (1) is circular, characterized in that: The front surface of the guide tool plate (1) is provided with thirty rectangular guide slots (2) penetrating through the front and back surfaces of the guide tool plate (1), the thirty guide slots (2) are circularly and equidistantly distributed on the guide tool plate (1), the center of the circle formed by the thirty guide slots (2) coincides with the center of the guide tool plate (1), and the center lines of the guide slots (2) in the length direction respectively pass through the center of the guide tool plate (1); the front surface of the guide tool plate (1) is provided with fifteen nut two avoiding holes (3) penetrating through the front and back surfaces of the guide tool plate (1), the centers of the fifteen nut two avoiding holes (3) are located on the circumference of the same circle, the center of the circle coincides with the center of the guide tool plate (1), and two guide slots (2) are arranged between adjacent two nut two avoiding holes (3); the front surface of the guide tool plate (1) is provided with a plurality of long bolt one through holes (4) penetrating through the front and back surfaces of the guide tool plate (1), and the centers of the long bolt one through holes (4) are located on the circumference of the circle where the centers of the nut two avoiding holes (3) are located; the front surface of the guide tool plate (1) is provided with a circular through hole (5) penetrating through the front and back surfaces of the guide tool plate (1), and the center of the circular through hole (5) coincides with the center of the guide tool plate (1), and the diameter of the circular through hole (5) is greater than the diameter of the rotor front baffle.

2. The permanent magnet motor rotor magnetic steel mounting guide tool according to claim 1, characterized in that: The thickness of the guide tool plate (1) is 20mm, the number of the long bolt one through holes (4) is four, the central angle between three pairs of adjacent long bolt one through holes (4) is 96°, the central angle between the remaining one pair of adjacent long bolt one through holes (4) is 72°, and the central angle between the long bolt one through hole (4) and the adjacent nut two avoiding hole (3) is 12°.

3. The permanent magnet motor rotor magnetic steel mounting guide tool according to claim 1, characterized in that: The length-width size of the guide slot (2) is equal proportionally greater than the length-width size of the corresponding end surface of the permanent magnet magnetic steel (3'), and the length-width size of the guide slot (2) is equal proportionally smaller than the length-width size of the slot of the permanent magnet magnetic steel mounting groove (6').

4. The permanent magnet motor rotor magnetic steel mounting guide tool according to claim 1, characterized in that: The roughness of the inner wall surface of the guide slot (2) is 3.

2.

5. The permanent magnet motor rotor magnetic steel mounting guide tool according to claim 1, characterized in that: The front surface of the guide tool plate (1) is provided with fifteen magnetic steel polarity marks one (6) and fifteen magnetic steel polarity marks two (7), and the magnetic steel polarity marks one (6) and the magnetic steel polarity marks two (7) are respectively arranged at the corresponding guide slots (2).

6. The permanent magnet motor rotor magnetic steel mounting guide tool according to claim 1, characterized in that: The back surface of the guide tool plate (1) is provided with two positioning columns (8), when the two positioning columns (8) are inserted and matched with the corresponding two long bolt through holes, the fifteen nut two avoiding holes (3) and the plurality of long bolt one through holes (4) respectively realize one-to-one through with the corresponding long bolt through holes.

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