Disc motor rotor magnetic assembly assembling tool and assembling process

Abstract

The application discloses a disc motor rotor magnetic assembly assembling tool and assembling process. A circular ring magnetic yoke disc is sleeved on a first boss of a base, and a bolt is used for fixing the circular ring magnetic yoke disc and the base. A separation positioning piece is placed on the circular ring magnetic yoke disc, a fixed part is detachably fixed with a second boss of the base, and a partition plate separates the circular ring magnetic yoke disc into a plurality of fan ring areas. The fan ring areas are coated with glue. The inner arc of a fan ring magnetic steel abuts against the side wall of the fixed part, the straight side of the fan ring magnetic steel abuts against the partition plate, and then the bottom of the fan ring magnetic steel abuts against the top of the circular ring magnetic yoke disc. Two extrusion pieces are oppositely placed, the extrusion part extrudes the outer arc of the fan ring magnetic steel, the two extrusion pieces are rotated by an angle greater than that of one fan ring magnetic steel, and pressure is applied. After the glue is solidified, the separation positioning piece is removed, the bolt installed at S1 is taken off, the bolt passes through a first threaded hole not corresponding to a first through hole, the bolt lifts the base, and demolding is completed.

Description

Technical Field

[0001] The present invention relates to the field of magnetic assembly assembly, and in particular to an assembly tool and an assembly process for a disc motor rotor magnetic assembly. Background Art

[0002] Disc motors, with their unique flat structure, offer significant advantages in high-power, high-torque applications. However, this also places higher demands on the manufacturing precision of their magnetic components. To ensure uniform distribution of magnets on the yoke of a disc motor rotor, existing solutions typically employ bosses, grooves, or other features on the yoke to position the magnets.

[0003] However, this type of solution will bring about multiple performance impacts: on the one hand, there is magnetic circuit interference. Bosses, grooves and other workpieces will affect the direction of the magnetic circuit, and thus the motor performance will be affected; on the other hand, there is weight increase and thus reduced efficiency. Bosses, grooves and other workpieces increase the weight of the yoke disk itself, resulting in additional energy consumption and reducing the overall efficiency of the motor; on the other hand, there are dynamic balancing challenges. The processing accuracy of bosses, grooves and workpieces will directly affect the distribution of magnetic steel, and thus affect the weight distribution of the entire rotor and the dynamic balance of the motor.

[0004] To this end, the applicant intends to propose a disc motor rotor magnetic assembly assembly tool and assembly process to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a disc motor rotor magnetic assembly assembly tool and assembly process, in which the fan annular magnet is glued to the annular yoke disk to form a magnetic assembly, and the magnetic assembly is assembled through a base, a partition positioning piece and an extrusion piece, thereby improving the manufacturing accuracy of the magnetic assembly, thereby improving the dynamic balance of the disc motor, reducing noise and improving the working efficiency of the motor.

[0006] To achieve the above-mentioned object, the solution of the present invention is as follows: a disc motor rotor magnetic assembly assembly tool, comprising a magnetic assembly, a base, a separation positioning member and at least two extrusion members;

[0007] The magnetic assembly includes a plurality of sector annular magnets and an annular yoke disk. The sector annular magnets are evenly distributed circumferentially and bonded to the annular yoke disk. The sector annular magnets are arranged in the order of N pole and S pole.

[0008] A first boss is provided at the center of the base, and the center hole of the annular magnetic yoke disk is sleeved on the first boss. The first boss is used to position the annular magnetic yoke disk. A second boss is provided on the first boss. The size of the second boss is smaller than the first boss. The first boss and the second boss form a stepped structure. The upper end surface of the second boss is flush with the bottom surface of the sector annular magnetic steel.

[0009] At least one first through hole is evenly provided on the outer circumference of the base, and a plurality of first threaded through holes are evenly provided on the outer circumference of the annular magnetic yoke disk, wherein the number of the first through holes is less than the number of the first threaded through holes, and bolts pass through the first through holes and the corresponding first threaded through holes, so that the annular magnetic yoke disk is detachably fixedly connected to the base;

[0010] The separating and positioning member includes a fixing portion and a spacer. The fixing portion is detachably fixedly connected to the second boss. The side wall of the fixing portion is in conformal contact with the inner arc of the sector annular magnetic steel. The side wall of the fixing portion is provided with a plurality of evenly distributed radial spacers. The number of the spacers is equal to the number of the sector annular magnetic steels. The spacers are used to separate and position the plurality of sector annular magnetic steels so that the sector annular magnetic steels are evenly distributed on the annular magnetic yoke disk.

[0011] The extrusion piece includes an extrusion portion, which is in conformal contact with the outer arc of the sector ring magnetic steel.

[0012] Furthermore, a second through hole is provided on the fixing portion, a blind hole corresponding to the second through hole is provided on the second boss, and the positioning pin passes through the second through hole and the blind hole so that the partition positioning piece and the base are matched and fixed.

[0013] Furthermore, a countersunk hole is provided at one end of the first through hole close to the bottom surface of the base.

[0014] Furthermore, the partitioning and positioning member is an integrated structure, and the partitioning and positioning member is made of carbon steel.

[0015] Furthermore, the spacers of the separating and positioning members are covered with Teflon tape.

[0016] Furthermore, the extrusion piece includes a hand-held portion, which is used for an operator to grasp.

[0017] Furthermore, the extrusion piece is made of epoxy resin material.

[0018] Furthermore, the base is made of aluminum alloy.

[0019] Furthermore, the height of the spacer is greater than the thickness of the sector ring magnetic steel.

[0020] A disc motor rotor magnetic assembly assembly process includes the following steps:

[0021] S1: First, the annular magnetic yoke is placed on the first boss of the base, and then a bolt is passed through the first through hole and the corresponding first threaded through hole to detachably and fixedly connect the annular magnetic yoke to the base;

[0022] S2: placing the separation positioning member on the annular magnetic yoke disk, and then detachably and fixedly connecting the fixing portion of the separation positioning member to the second boss of the base, so that the spacers of the separation positioning member divide the annular magnetic yoke disk into a plurality of sector annular areas of equal area;

[0023] S3: Apply glue to several fan-shaped areas respectively;

[0024] S4: The operator tilts the fan-shaped annular magnet and places the inner arc of the fan-shaped annular magnet against the side wall of the fixing portion. At the same time, the straight edge of one side of the fan-shaped annular magnet is placed against the spacer. Then, the bottom of the fan-shaped annular magnet is placed against the top of the circular yoke disk. Finally, the fan-shaped annular magnet is placed flat on the top of the circular yoke disk. Several fan-shaped annular magnets are arranged on the circular yoke disk in the order of one N pole and one S pole.

[0025] S5: Place the two extrusion pieces relative to each other and apply pressure, the extrusion part squeezes the outer arc of the sector ring magnet, and then the two extrusion pieces are rotated by an angle greater than that of the sector ring magnet, and continue to apply pressure, so that the inner arc of each sector ring magnet fits with the side wall of the fixing part;

[0026] S6: Wait for the glue to solidify;

[0027] S7: First remove the partition positioning piece, then remove the bolt installed in S1, and then pass the bolt through the first threaded through hole that does not correspond to the first through hole, so that the bolt lifts the base to complete the demoulding of the magnetic assembly;

[0028] S8: Clean the glue spillage on the magnetic components and tooling, and the assembly process is completed.

[0029] After adopting the above scheme, the beneficial effect of the present invention is that: the fan-shaped annular magnet of the present invention is glued to the annular yoke disk to form a magnetic assembly, and the magnetic assembly is assembled through the base, partition positioning parts and extrusion parts, thereby improving the manufacturing accuracy of the magnetic assembly, thereby improving the dynamic balance of the disc motor, reducing noise, and improving the working efficiency of the motor.

[0030] 1. Reduce energy consumption and improve work efficiency:

[0031] Abandon the traditional grooving, boss setting or other tooling to assemble the magnetic assembly, avoid increasing the weight of the magnetic assembly and thus reduce energy consumption.

[0032] 2. Improve the dynamic balance of the disc motor, reduce the motor running noise, and improve work efficiency:

[0033] First, the annular yoke disk is sleeved on the base to achieve the positioning of the circular yoke disk; the partition positioning piece is placed on the annular yoke disk and then fixedly connected to the base. The partition positioning piece evenly divides the annular area into several sector-shaped areas, and the sector-shaped magnetic steel is pressed against the fixed part and the partition to achieve re-positioning; the magnetic assembly is assembled with high precision, so that the circumferential weight of the magnetic assembly remains consistent, effectively improving the dynamic balance of the motor, reducing operating noise, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a structural diagram of a magnetic component;

[0035] Figure 2 This is a schematic diagram of an explosion structure according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of an exploded structure from another angle of an embodiment of the present invention;

[0037] Figure 4 A schematic structural diagram of an embodiment of the present invention;

[0038] Figure 5 This is a schematic structural diagram from another angle of an embodiment of the present invention;

[0039] Figure 6 Schematic diagram of the cross-sectional structure of an embodiment of the present invention;

[0040] Figure 7 for Figure 6 Enlarged view of part a.

[0041] Description of labels:

[0042] 1. Magnetic assembly; 11. Sector ring magnetic steel; 12. Circular ring magnetic yoke disk; 121. First threaded through hole;

[0043] 2. Base; 21. First boss; 22. Second boss; 221. Blind hole; 23. First through hole; 24. Countersunk hole;

[0044] 3. Separating and positioning member; 31. Fixing portion; 311. Second through hole; 32. Spacer;

[0045] 4. Extrusion piece; 41. Extrusion portion; 42. Hand-held portion;

[0046] 5. Positioning pin. DETAILED DESCRIPTION

[0047] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] It should be noted that the terms “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be understood that the terms such as “connection” used should be understood in a broad sense, which may refer to a direct connection or an indirect connection through an intermediate medium.

[0050] The orientation or positional relationship indicated by “upper”, “upper end surface”, “bottom surface”, “side wall”, etc. in the description of the present invention is based on the orientation or positional relationship shown in the specific embodiments or drawings, and is only for the convenience of describing the specific embodiments of the present invention or for the reader's understanding.

[0051] The present invention provides a disc motor rotor magnetic assembly 1 assembly tool, mainly referring to Figure 2 , including a magnetic component 1, a base 2, a separating and positioning member 3 and at least two extrusion members 4.

[0052] The magnetic assembly 1 includes a plurality of sector ring magnets 11 and a circular yoke disk 12. The sector ring magnets 11 are evenly distributed circumferentially and bonded to the circular yoke disk 12 with glue. Figure 4 In the embodiment shown, the sector ring magnets 11 are arranged in intervals in the order of N pole and S pole. The innovative bonding method replaces the traditional methods of slotting, setting bosses, or other workpieces to fix the sector ring magnets 11. This not only saves assembly costs but also effectively improves the precision of the magnetic assembly 1 without increasing its weight. The high-precision magnetic assembly 1 enables high motor efficiency and low noise.

[0053] A first boss 21 is provided at the center of the base 2. The center hole of the annular yoke disk 12 is sleeved on the first boss 21. The first boss 21 is in conformal contact with the annular yoke disk 12 and is used to position the annular yoke disk 12. A second boss 22 is provided on the first boss 21. The second boss 22 is smaller than the first boss 21. The first boss 21 and the second boss 22 form a stepped structure. The upper end surface of the second boss 22 is flush with the bottom surface of the sector annular magnetic steel 11. The grooves in the stepped structure are used to store overflow glue, which not only prevents excess glue from affecting the bonding accuracy of the magnetic assembly 1, but also facilitates the subsequent glue removal of the assembly tooling and the magnetic assembly 1.

[0054] At least one first through-hole 23 is uniformly defined on the periphery of the base 2, and a plurality of first threaded through-holes 121 are uniformly defined on the periphery of the annular magnetic yoke disc 12. The number of first through-holes 23 is less than the number of first threaded through-holes 121. Bolts pass through the first through-holes 23 and the corresponding first threaded through-holes 121 to removably and securely connect the annular magnetic yoke disc 12 to the base 2. The first through-holes 23 and the first threaded through-holes 121 simplifies assembly and improves assembly accuracy. If both were threaded holes, it would be difficult to ensure thread synchronization and, consequently, gapless contact between the annular magnetic yoke disc 12 and the base 2. If both were through-holes, the annular magnetic yoke disc 12 and the base 2 would not be securely fastened.

[0055] The separator locator 3 is placed on the annular yoke disk 12. The separator locator 3 includes a fixing portion 31 and a spacer 32. The fixing portion 31 is detachably fixedly connected to the second boss 22. The side wall of the fixing portion 31 is provided with a number of evenly distributed radial spacers 32. The number of spacers 32 is equal to the number of fan-shaped magnetic steels 11. The side wall of the fixing portion 31 is in conformal contact with the inner arc of the fan-shaped magnetic steel 11. The spacer 32 is in conformal contact with the straight edge of the fan-shaped magnetic steel 11. The side wall of the fixing portion 31 and the spacer 32 jointly position the fan-shaped magnetic steel 11. At the same time, the spacer 32 also separates several fan-shaped magnetic steels 11, so that each fan-shaped magnetic steel 11 is independently located between the two partitions. The dual positioning of the fixing portion 31 and the spacer 32 of the separator locator 3 improves the assembly accuracy of the magnetic component 1.

[0056] The extrusion piece 4 includes an extrusion portion 41, which conforms to the outer arc of the sector-shaped annular magnetic steel 11. The extrusion portions 41 of the two extrusion pieces 4 respectively abut the outer arcs of the opposite sector-shaped annular magnetic steel 11. The operator applies uniform pressure to the sector-shaped annular magnetic steel 11 through the extrusion pieces 4, so that the inner arc of the sector-shaped annular magnetic steel 11 is closely attached to the side wall of the fixing portion 31, further improving the assembly accuracy of the magnetic assembly 1.

[0057] There are many ways to fix the fixing portion 31 and the second boss 22, such as using mortise and tenon joints or fasteners, which are not limited in this case. Figure 2 and Figure 5 The fixing portion 31 is provided with a second through hole 311, and the second boss 22 is provided with a blind hole 221 corresponding to the second through hole 311. The positioning pin 5 passes through the second through hole 311 and the blind hole 221 to secure the spacer 3 to the base 2. The positioning pin 5 enables repeated and precise positioning, which is particularly suitable for the scenario of repeated disassembly and assembly required in the present invention and meets the requirements of mass production of the magnetic assembly 1.

[0058] A countersunk hole 24 is provided at one end of the first through hole 23 close to the bottom surface of the base 2. The head of the bolt used for fixing can be completely embedded in the countersunk hole 24. The bolt head does not protrude from the surface of the base 2, so that the base 2 can be placed stably on the operating table.

[0059] The separator locator 3 is an integrated structure with high precision. The separator locator 3 is preferably made of carbon steel. Carbon steel has magnetic conductivity and can absorb magnetic steel. When the fan-shaped magnetic steel 11 is placed on the circular magnetic yoke disk 12, the separator locator 3 simultaneously absorbs the fan-shaped magnetic steel 11, so that the fan-shaped magnetic steel 11 can be placed in the correct position, thereby increasing the assembly accuracy of the magnetic component 1.

[0060] To facilitate adhesive removal later, the surface of spacer 32 is covered with Teflon tape to prevent sticking. The material used is not specified in this application. The gap between two adjacent annular magnetic steel segments is approximately equal to the thickness of the spacer plus the thickness of the Teflon tape. When one straight edge of the annular magnetic segment is in close contact with the spacer, the gap between the other straight edge of the annular magnetic segment and the other spacer is 0.05mm to 0.1mm.

[0061] To make the operation more convenient for the operator, the extrusion member 4 includes a handle 42, which the operator can directly grasp and apply uniform pressure to the sector ring magnetic steel 11. The extrusion member 4 is preferably made of epoxy resin, which has good mechanical properties and a good elastic modulus, and can withstand external pressure without damaging the sector ring magnetic steel 11.

[0062] The base 2 is made of aluminum alloy, which has good plasticity and corrosion resistance. Good plasticity is conducive to processing the base 2, making the first boss 21 and the second boss 22 more precise, and good corrosion resistance is conducive to resisting the erosion of glue and increasing the service life of the tooling.

[0063] The sector ring magnets 11 will attract each other, so the height of the designed spacer 32 is much greater than the thickness of the sector ring magnet 11 to prevent adjacent sector ring magnets 11 from attracting each other and causing overturning, thereby affecting the assembly accuracy.

[0064] In this embodiment, there are two extrusion pieces 4, and the extrusion portion 41 is in conformal contact with the outer arcs of three adjacent sector-annular magnetic steels 11. The operator grasps the extrusion piece 4 with both hands respectively, and applies relative pressure with both hands to make the sector-annular magnetic steel 11 close to the side wall of the fixed portion 31. Then the operator rotates the sector-annular magnetic steel 11 by an angle greater than one sector-annular magnetic steel 11 and less than three sector-annular magnetic steels 11, and continues to apply pressure, eventually making the inner arcs of all the sector-annular magnetic steels 11 close to the side wall of the fixed portion 31.

[0065] The present invention also provides a disc motor rotor magnetic assembly 1 assembly process, comprising the following steps:

[0066] S1: First, the annular magnetic yoke disc 12 is sleeved on the first boss 21 of the base 2, and then a bolt is passed through the first through hole 23 and the corresponding first threaded through hole 121 to detachably and fixedly connect the annular magnetic yoke disc 12 to the base 2;

[0067] S2: Place the separation positioning member 3 on the annular magnetic yoke disk 12, and then detachably and fixedly connect the fixing portion 31 of the separation positioning member 3 to the second boss 22 of the base 2. The spacers 32 of the separation positioning member 3 divide the annular magnetic yoke disk 12 into a plurality of sector annular areas of equal area.

[0068] S3: Apply glue to several fan-shaped areas respectively;

[0069] S4: The operator tilts the fan-shaped annular magnet 11, with the inner arc of the fan-shaped annular magnet 11 resting against the side wall of the fixing portion 31, and the straight edge of one side of the fan-shaped annular magnet 11 resting against the spacer 32. Then, the bottom of the fan-shaped annular magnet 11 rests against the top of the circular yoke disk 12. Finally, the fan-shaped annular magnet 11 is placed flat on the top of the circular yoke disk 12. Several fan-shaped annular magnets 11 are arranged on the circular yoke disk 12 in the order of one N pole and one S pole.

[0070] S5: The two extrusion pieces 4 are placed opposite to each other and pressure is applied. The extrusion portion 41 squeezes the outer arc of the sector ring magnet 11. Then, the two extrusion pieces 4 are rotated by an angle greater than that of the sector ring magnet and pressure is continued to be applied until the inner arc of each sector ring magnet 11 is in contact with the side wall of the fixing portion 31.

[0071] S6: Wait for the glue to solidify;

[0072] S7: First remove the spacer 3, then remove the bolt installed in S1, and then pass the bolt through the first threaded through hole 121 that does not correspond to the first through hole 23, so that the bolt lifts the base 2, completing the demoulding of the magnetic assembly 1;

[0073] S8: Clean the glue spillage on the magnetic assembly 1 and the tooling, and the assembly process is completed.

[0074] In the above step S4, the way of placing the fan-shaped annular magnet 11 is creative. The conventional placement method places the fan-shaped annular magnet 11 directly on the circular annular yoke disk 12, and then pushes the fan-shaped annular magnet 11 so that the inner arc of the fan-shaped annular magnet 11 is in close contact with the side wall of the fixing part 31 to achieve assembly. However, in the present invention, the operator picks up the fan-shaped annular magnet 11 at an angle, and then presses the inner arc and one side straight edge of the fan-shaped annular magnet 11 against the partition positioning member 3 at the same time, and then places the fan-shaped annular magnet 11 on the annular yoke disk, which effectively reduces the sliding distance of the fan-shaped annular magnet 11 when correcting its position, reduces the loss of glue during pushing, and avoids the situation where there is no glue or too little glue, resulting in the magnetic assembly 1 being not firmly bonded.

[0075] The above describes in detail the assembly tooling and assembly process for the disc motor rotor magnetic assembly provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A disc motor rotor magnetic assembly assembly tool, characterized by: It includes a magnetic assembly, a base, a spacer and at least two extrusion parts; The magnetic assembly includes a plurality of sector annular magnets and an annular yoke disk. The sector annular magnets are evenly distributed circumferentially and bonded to the annular yoke disk. The sector annular magnets are arranged in the order of N pole and S pole. A first boss is provided at the center of the base, and the center hole of the annular magnetic yoke disk is sleeved on the first boss. The first boss is used to position the annular magnetic yoke disk. A second boss is provided on the first boss. The size of the second boss is smaller than the first boss. The first boss and the second boss form a stepped structure. The upper end surface of the second boss is flush with the bottom surface of the sector annular magnetic steel. At least one first through hole is evenly provided on the outer circumference of the base, and a plurality of first threaded through holes are evenly provided on the outer circumference of the annular magnetic yoke disk, wherein the number of the first through holes is less than the number of the first threaded through holes, and bolts pass through the first through holes and the corresponding first threaded through holes, so that the annular magnetic yoke disk is detachably fixedly connected to the base; The separating and positioning member includes a fixing portion and a spacer. The fixing portion is detachably fixedly connected to the second boss. The side wall of the fixing portion is in conformal contact with the inner arc of the sector annular magnetic steel. The side wall of the fixing portion is provided with a plurality of evenly distributed radial spacers. The number of the spacers is equal to the number of the sector annular magnetic steels. The spacers are used to separate and position the plurality of sector annular magnetic steels so that the sector annular magnetic steels are evenly distributed on the annular magnetic yoke disk. The extrusion piece includes an extrusion portion, which is in conformal contact with the outer arc of the sector ring magnetic steel.

2. The disc motor rotor magnetic assembly assembly tool according to claim 1, characterized in that: The fixing portion is provided with a second through hole, the second boss is provided with a blind hole corresponding to the second through hole, and the positioning pin passes through the second through hole and the blind hole to ensure that the partition positioning piece and the base are matched and fixed.

3. The disc motor rotor magnetic assembly assembly tool according to claim 1, characterized in that: A countersunk hole is provided at one end of the first through hole close to the bottom surface of the base.

4. The disc motor rotor magnetic assembly assembly tool according to claim 1, characterized in that: The partitioning and positioning piece is an integrated structure and is made of carbon steel.

5. The disc motor rotor magnetic assembly assembly tool according to claim 1, characterized in that: The spacers of the separating and positioning members are covered with Teflon tape.

6. The disc motor rotor magnetic assembly assembly tool according to claim 1, characterized in that: The extrusion piece includes a hand-held portion, which is used for an operator to grasp.

7. The disc motor rotor magnetic assembly assembly tool according to claim 1, characterized in that: The extrusion piece is made of epoxy resin material.

8. The disc motor rotor magnetic assembly assembly tool according to claim 1, characterized in that: The base is made of aluminum alloy.

9. The disc motor rotor magnetic assembly assembly tool according to claim 5, characterized in that: The height of the spacer is greater than the thickness of the sector ring magnetic steel.

10. A disc motor rotor magnetic assembly assembly process, using the disc motor rotor magnetic assembly assembly tool according to any one of claims 1 to 9, characterized in that: The steps include: S1: First, the annular magnetic yoke is placed on the first boss of the base, and then a bolt is passed through the first through hole and the corresponding first threaded through hole to detachably and fixedly connect the annular magnetic yoke to the base; S2: placing the separation positioning member on the annular magnetic yoke disk, and then detachably and fixedly connecting the fixing portion of the separation positioning member to the second boss of the base, so that the spacers of the separation positioning member divide the annular magnetic yoke disk into a plurality of sector annular areas of equal area; S3: Apply glue to several fan-shaped areas respectively; S4: The operator tilts the fan-shaped annular magnet and places the inner arc of the fan-shaped annular magnet against the side wall of the fixing portion. At the same time, the straight edge of one side of the fan-shaped annular magnet is placed against the spacer. Then, the bottom of the fan-shaped annular magnet is placed against the top of the circular yoke disk. Finally, the fan-shaped annular magnet is placed flat on the top of the circular yoke disk. Several fan-shaped annular magnets are arranged on the circular yoke disk in the order of one N pole and one S pole. S5: Place the two extrusion pieces relative to each other and apply pressure, the extrusion part squeezes the outer arc of the sector ring magnet, and then the two extrusion pieces are rotated by an angle greater than that of the sector ring magnet, and continue to apply pressure, so that the inner arc of each sector ring magnet fits with the side wall of the fixing part; S6: Wait for the glue to solidify; S7: First remove the partition positioning piece, then remove the bolt installed in S1, and then pass the bolt through the first threaded through hole that does not correspond to the first through hole, so that the bolt lifts the base to complete the demoulding of the magnetic assembly; S8: Clean the glue spillage on the magnetic components and tooling, and the assembly process is completed.

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