A rotor magnetic steel bonding tool and a rotor magnetic steel bonding method

Abstract

The application relates to the technical field of magnetic steel bonding, in particular to a rotor magnetic steel bonding tool and a rotor magnetic steel bonding method. The tool comprises an operation table, the top of the operation table is fixedly connected with a first base and a second base respectively, a first positioning structure is installed on the first base, the first positioning structure is used for positioning the position of a screw nut of a first circle of magnetic steel to be bonded, a second positioning structure is installed on the second base, and the second positioning structure is used for positioning the position of a screw nut of a second circle of magnetic steel to be bonded. Each magnetic steel is limited in a unit cell formed by two magnetic steel separation plates. As long as the indexing accuracy of the tool itself is ensured, the theoretical error of the pole angle of all the magnetic steels is zero, which fundamentally eliminates the spatial harmonics generated due to the uneven angle in the motor magnetic field. The magnetic steel separation plates form physical limiting, and the subjective error of the operator is eliminated.

Description

Technical Field

[0001] This invention relates to the field of magnet bonding technology, and in particular to a rotor magnet bonding fixture and a rotor magnet bonding method. Background Technology

[0002] In fields such as new energy vehicle drive systems and precision component manufacturing, the requirements for lightweight, integrated, and high-performance permanent magnet motors are increasing. This trend has also directly driven the evolution of robotics technology, especially in high-end equipment such as humanoid robots, where designs that deeply integrate motors and transmission mechanisms are widely adopted. Taking linear joints as an example, they typically use a motor to drive a lead screw, converting rotational motion into linear motion. To minimize weight and size, the motor rotor and lead screw nut are designed as a single structure, requiring multiple magnets to be directly bonded to the outer cylindrical surface of the lead screw nut, making it the rotor part of the motor. However, it is worth considering that traditional methods rely on the operator's experience to position the circumferential spacing of the magnets, making it difficult to guarantee the uniformity of the inter-pole angles of the multi-pole magnets. Especially for rotors that require bonding two rings of magnets, the correspondence between the magnets is even more difficult to guarantee, easily leading to severe distortion of the motor's magnetic field.

[0003] Therefore, in order to solve the above problems, a more suitable facility that meets the needs of users is needed. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a rotor magnet bonding fixture and a rotor magnet bonding method to solve the problem that the circumferential spacing positioning of magnets relies on the operator's experience, making it difficult to ensure the uniformity of the inter-pole angle of multi-pole magnets.

[0005] To achieve the above objectives, the present invention provides a rotor magnet bonding fixture, including an operating table. A first base and a second base are fixedly connected to the top of the operating table. A primary positioning structure is installed on the first base for positioning the position of the lead screw nut for the first turn of the magnet to be bonded. A secondary positioning structure is installed on the second base for positioning the position of the lead screw nut for the second turn of the magnet to be bonded.

[0006] A support ring is provided above the operating table. Positioning units that cooperate with the support ring are respectively installed on the first base and the second base. Several magnetic steel partition plates distributed in a circle are provided above the support ring. An adjustment structure for adjusting the position of several magnetic steel partition plates is installed on the support ring.

[0007] Optionally, the positioning unit includes several pins that are respectively fixedly installed on the top of the first base and the second base, and the bottom of the support ring is provided with several limiting grooves that cooperate with the pins.

[0008] Optionally, the primary positioning structure includes two axial fixing plates. A first receiving groove is provided on the first base to cooperate with the two axial fixing plates. A slot is provided on the inner wall of the axial fixing plate to cooperate with the boss on the lead screw nut. An insert block is fixedly connected to the bottom end of the axial fixing plate. A slot is provided at the bottom of the inner wall of the first receiving groove to cooperate with the insert block, and the two insert blocks are inserted into the corresponding slots.

[0009] Optionally, the secondary positioning structure includes a staggered positioning sleeve disposed above the second base, a pin on the second base penetrating the staggered positioning sleeve, a second receiving groove being provided on the second base, an axial fixing sleeve cooperating with a lead screw nut being provided in the second receiving groove, the axial fixing sleeve being located in the second receiving groove, the staggered positioning sleeve being located above the axial fixing sleeve, and a plurality of first locking grooves cooperating with magnets being provided on the inner wall of the staggered positioning sleeve.

[0010] Optionally, the adjustment structure includes a mounting ring fixedly installed on the top of the support ring, a plurality of guide rails above the mounting ring, the guide rails and the mounting ring being fixedly connected by a plurality of first bolts, a slider being slidably sleeved on the outside of the guide rails, a mounting seat being provided above the slider, the mounting seat and the slider being fixedly connected by a plurality of second bolts, the mounting seat and the magnetic steel partition plate being fixedly connected by a connecting block, and a positioning unit cooperating with the connecting block being provided above the mounting ring.

[0011] Optionally, the mounting ring has several grooves that mate with the connecting block, and the connecting block is slidably installed in the corresponding groove.

[0012] Optionally, the mounting ring has several positioning grooves that mate with the guide rail, and the bottom end of the guide rail is located in the positioning groove.

[0013] Optionally, the positioning unit includes a locking ring disposed above the mounting ring. The inner wall of the locking ring has several second locking grooves that cooperate with the connecting blocks. The locking ring is sleeved on the outside of several connecting blocks, and the side of the connecting block away from the magnetic steel partition plate abuts against the inner wall of the second locking groove. An expansion ring is disposed above the locking ring. The expansion ring and the locking ring are fixedly connected by several connecting posts. The outer wall of the expansion ring has an expansion groove that cooperates with the connecting blocks.

[0014] This invention also provides a method for bonding rotor magnets, applied to the rotor magnet bonding fixture described above, comprising the following steps:

[0015] Step 1: The operator positions and installs the lead screw nut, to which the magnet needs to be bonded, onto the first base using a single positioning structure;

[0016] Step 2: The operator installs the support ring on top of the first base and positions the support ring using the positioning unit;

[0017] Step 3: Adjust the position of several magnetic steel partition plates by adjusting the structure, and form a uniform interval around the lead screw nut with the same shape as the magnets.

[0018] Step 4: The operator attaches the magnets from the side into the gaps formed by the pins to achieve uniform bonding of the magnets. After the first round of several magnets are bonded, the operator removes the support ring from the first base.

[0019] Step 5: The operator places the lead screw nut with the magnet attached onto the second base, and uses the secondary positioning structure to position and install the lead screw nut onto the second base;

[0020] Step Six: The operator moves the support ring onto the second base and uses the positioning unit to locate the position of the support ring on the second base;

[0021] Step 7: Adjust the position of several magnetic steel partition plates by adjusting the structure. With several magnetic steel partition plates forming a uniform interval around the lead screw nut that is the same shape as the magnet, the operator can then attach another ring of magnets around the lead screw nut.

[0022] The beneficial effects of this invention are as follows: The operator positions and installs the lead screw nut to which magnets need to be bonded onto the first base using a primary positioning structure. The operator then installs a support ring above the first base, positions the support ring using a positioning unit, and adjusts the positions of several magnet partition plates using an adjustment structure. These partition plates form a uniform spacing around the lead screw nut, matching the shape of the magnets. The operator then inserts the magnets into the gaps formed by the pins from the side, achieving uniform bonding of the magnets. After the first round of bonding of several magnets is completed, the operator removes the support ring from the first base. The operator then places the lead screw nut with the bonded magnets onto the second base, positions and installs it onto the second base using a secondary positioning structure. The operator then moves the support ring onto the second base, positioning it using a positioning unit. The position of the two base plates is adjusted, and then the positions of several magnetic steel partition plates are adjusted again by adjusting the structure. The magnetic steel partition plates form a uniform interval around the lead screw nut with the same shape as the magnet. The operator can then attach another ring of magnets around the lead screw nut. After all the magnetic steel partition plates are adjusted, they form a complete and equally divided circular reference grid at one time. Each magnet is confined within a cell formed by two magnetic steel partition plates. As long as the indexing accuracy of the tooling itself is guaranteed, the theoretical error of the inter-pole angle of all magnets is zero. This fundamentally eliminates the spatial harmonics caused by uneven angles in the motor magnetic field. The magnetic steel partition plates form physical limits, eliminating the subjective error of the operator. The magnetic steel partition plates ensure the uniformity of angles, which is the key to reducing cogging torque. The precise correspondence of the two rings of magnets eliminates the asymmetry of the axial magnetic field. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is one of the overall structural schematic diagrams of an embodiment of the present invention;

[0025] Figure 2 This is a second schematic diagram of the overall structure of an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the primary positioning structure according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram showing the disassembled structure of the axial fixing plate and the lead screw nut according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the first base in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the positioning unit in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure in which the guide rail and the mounting ring are installed together according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure at the bottom of the support ring according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the mounting ring structure according to an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the connecting block in an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the secondary positioning structure disassembly according to an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the structure of the lead screw nut after two turns of magnets have been attached, according to an embodiment of the present invention.

[0036] The diagram is marked as follows:

[0037] 1. Operating platform; 2. First base; 3. Second base; 4. Support ring; 5. Magnet partition plate; 6. Axial fixing plate; 7. Slot; 8. First receiving slot; 9. Slot; 10. Insert block; 11. Pin; 12. Limiting slot; 13. Offset positioning sleeve; 14. Axial fixing sleeve; 15. First locking slot; 16. Mounting ring; 17. Guide rail; 18. First bolt; 19. Slider; 20. Connecting block; 21. Mounting seat; 22. Second bolt; 23. Positioning slot; 24. Slide groove; 25. Outer expansion ring; 26. Locking ring; 27. Outer expansion slot; 28. Second locking slot; 29. ​​Connecting column; 30. Screw nut; 31. Boss; 32. Magnet; 33. Second receiving slot. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0039] Example 1, by Figure 1 , Figure 2 , Figure 7 and Figure 12 The present invention includes an operating table 1, with a first base 2 and a second base 3 fixedly connected to the top of the operating table 1. A primary positioning structure is installed on the first base 2 for positioning the position of the lead screw nut 30 of the first ring to which the magnet 32 ​​needs to be bonded. A secondary positioning structure is installed on the second base 3 for positioning the position of the lead screw nut 30 of the second ring to which the magnet 32 ​​needs to be bonded.

[0040] A support ring 4 is provided above the operating table 1. Positioning units that cooperate with the support ring 4 are respectively installed on the first base 2 and the second base 3. Several magnetic steel partition plates 5 are arranged in a circular pattern above the support ring 4. An adjustment structure for adjusting the position of the magnetic steel partition plates 5 is installed on the support ring 4. The operator positions the lead screw nut 30, to which magnets 32 need to be bonded, on the first base 2 using the primary positioning structure. The operator then installs the support ring 4 above the first base 2, positions the support ring 4 using the positioning unit, and adjusts the position of the magnetic steel partition plates 5 using the adjustment structure. The magnetic steel partition plates 5 form a uniform interval around the lead screw nut 30, matching the shape of the magnets 32. The operator then inserts the magnets 32 into the intervals formed by the pins 11 from the side, achieving uniform bonding of the magnets 32. After the first round of bonding of several magnets 32 is completed, the operator removes the support ring 4 from the first base 2. The operator then places the lead screw nut 30 with the bonded magnets 32 on the second base 3, and uses the secondary positioning structure to... The lead screw nut 30 is positioned and installed on the second base 3. The operator moves the support ring 4 onto the second base 3 and positions the support ring 4 on the second base 3 using the positioning unit. Then, the positions of several magnetic steel partition plates 5 are adjusted again by adjusting the structure. The magnetic steel partition plates 5 form a uniform interval around the lead screw nut 30 with the same shape as the magnet 32. The operator can then attach another ring of magnets 32 around the lead screw nut 30. After adjustment, all the magnetic steel partition plates 5 form a complete and equally divided circular reference grid. Each magnet 32 ​​is confined within a cell formed by two magnetic steel partition plates 5. As long as the indexing accuracy of the tooling itself is guaranteed, the theoretical error of the inter-pole angle of all magnets 32 is zero. This fundamentally eliminates the spatial harmonics caused by uneven angles in the motor magnetic field. The magnetic steel partition plates 5 form physical limits, eliminating subjective errors of the operator. The magnetic steel partition plates 5 ensure angle uniformity, which is the key to reducing cogging torque. The precise correspondence of the two rings of magnets 32 eliminates axial magnetic field asymmetry.

[0041] Example 2, based on Example 1, is... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 11 and Figure 12The positioning unit includes several pins 11 fixedly installed on the top of the first base 2 and the second base 3 respectively. The bottom of the support ring 4 has several limiting grooves 12 that mate with the pins 11. The primary positioning structure includes two axial fixing plates 6. The first base 2 has a first receiving groove 8 that mates with the two axial fixing plates 6. The inner wall of the axial fixing plate 6 has a slot 7 that mates with the boss 31 on the lead screw nut 30. A plug 10 is fixedly connected to the bottom of the axial fixing plate 6. The bottom of the inner wall of the first receiving groove 8 has a plug that mates with the plug 10. The slot 9 is provided, and two insert blocks 10 are inserted into the corresponding slot 9. The secondary positioning structure includes a staggered positioning sleeve 13 set above the second base 3. The pin 11 on the second base 3 passes through the staggered positioning sleeve 13. A second receiving groove 33 is provided on the second receiving groove 33. An axial fixing sleeve 14 that cooperates with the lead screw nut 30 is provided in the second receiving groove 33. The axial fixing sleeve 14 is located in the second receiving groove 33. The staggered positioning sleeve 13 is located above the axial fixing sleeve 14. Several first locking grooves 15 that cooperate with the magnet 32 ​​are provided on the inner wall of the staggered positioning sleeve 13.

[0042] The operator drives the support ring 4 to move above the first base 2 or the second base 3, and the pin 11 is inserted into the corresponding limiting groove 12, thus positioning the support ring 4 and preventing it from rotating or wobbling relative to the first base 2 or the second base 3. The operator then drives the two axial fixing plates 6 to clamp the lead screw nut 30, and the boss 31 on the lead screw nut 30 is inserted into the slot 7. Through the cooperation of the boss 31 and the slot 7, the lead screw nut 30 is prevented from rotating relative to the axial fixing plates 6. The operator then inserts the two axial fixing plates 6 into the first receiving groove 8, and the two inserts 10 are inserted into the corresponding slots 9. Through the cooperation of the inserts 10 and the slots 9, the axial fixing plates 6 are prevented from rotating relative to the first base 2, thus fixing the lead screw nut 30 relative to the first base 2 and preventing the lead screw nut 30 from rotating. During the re-bonding process, the screw nut 30 rotates and wobbles relative to the first base 2. When the outer wall of the screw nut 30 is bonded with a circle of magnets 32, the operator transfers the screw nut 30 to the top of the second base 3. The operator drives the axial fixing sleeve 14 to be fitted onto the bottom end of the screw nut 30. Then, the operator drives the axial fixing sleeve 14 to be inserted into the second receiving groove 33. The operator drives the misaligned positioning sleeve 13 to be fitted onto the outside of the screw nut 30. The pin 11 passes through the misaligned positioning sleeve 13. The position of the misaligned positioning sleeve 13 is positioned by the pin 11 to prevent the misaligned positioning sleeve 13 from rotating and wobbling relative to the second base 3. The magnets 32 pass through the corresponding first locking groove 15. Through the cooperation of the first locking groove 15 and the magnets 32, the screw nut 30 is prevented from rotating and wobbling relative to the misaligned positioning sleeve 13 and the second base 3.

[0043] Example 3, based on Example 2, by Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The adjustment structure includes a mounting ring 16 fixedly installed on the top of the support ring 4. Several guide rails 17 are provided above the mounting ring 16. The guide rails 17 and the mounting ring 16 are fixedly connected by several first bolts 18. A slider 19 is slidably sleeved on the outside of the guide rails 17. A mounting seat 21 is provided above the slider 19. The mounting seat 21 and the slider 19 are fixedly connected by several second bolts 22. The mounting seat 21 and the magnetic steel partition plate 5 are fixedly connected by a connecting block 20. A positioning unit that mates with the connecting block 20 is provided above the mounting ring 16. Several sliding grooves 24 that mate with the connecting block 20 are opened on the mounting ring 16, and the connecting block 20 is slidably installed in the corresponding grooves. Inside the groove 24, the mounting ring 16 is provided with several positioning grooves 23 that cooperate with the guide rail 17, and the bottom end of the guide rail 17 is located inside the positioning groove 23. The positioning unit includes a locking ring 26 disposed above the mounting ring 16. Several second locking grooves 28 that cooperate with the connecting block 20 are provided on the inner wall of the locking ring 26. The locking ring 26 is sleeved on the outside of several connecting blocks 20, and the side of the connecting block 20 away from the magnetic steel partition plate 5 abuts against the inner wall of the second locking groove 28. An outer expansion ring 25 is provided above the locking ring 26. The outer expansion ring 25 and the locking ring 26 are fixedly connected by several connecting posts 29. The outer wall of the outer expansion ring 25 is provided with an outer expansion groove 27 that cooperates with the connecting block 20.

[0044] The design of slider 19 and guide rail 17 allows the magnetic steel partition plate 5 and connecting block 20 to slide relative to guide rail 17 and mounting ring 16. The design of positioning groove 23 reduces the possibility of horizontal wobbling of guide rail 17 relative to mounting ring 16. The design of sliding groove 24 allows connecting block 20 to slide smoothly relative to mounting ring 16 in the horizontal direction. When the lead screw nut 30 needs to pass between several magnetic steel partition plates 5, the operator drives locking ring 26 and outer expansion ring 25 to rotate so that outer expansion ring 25 is below locking ring 26. The operator drives outer expansion ring 25 to move between several connecting blocks 20, and connecting block 20 slides into outer expansion groove 27. The outer expansion groove 27 positions the connecting block 20 and magnetic steel partition plate 5 to avoid interference between magnetic steel partition plates 5. The mounting ring 16 is fitted onto the outside of the lead screw nut 30. When the mounting ring 16 is fitted onto the outside of the lead screw nut 30, the operator drives the outer expansion ring 25 and the locking ring 26 to move upward. Then, the operator drives the connecting block 20 and the magnetic steel partition plate 5 to move toward the lead screw nut 30 so that the magnetic steel partition plate 5 abuts against the outer wall of the lead screw nut 30. Then, the operator drives the locking ring 26 and the outer expansion ring 25 to rotate 180 degrees. Then, the operator drives the locking ring 26 to move downward. The top of the connecting block 20 is inserted into the corresponding second locking groove 28, and the side of the connecting block 20 away from the magnetic steel partition plate 5 abuts against the inner wall of the second locking groove 28. The locking ring 26 limits the position of the connecting block 20, preventing the connecting block 20 and the magnetic steel partition plate 5 from shaking during the bonding process of the magnet 32.

[0045] This embodiment also provides a rotor magnet bonding method, applied to the rotor magnet bonding fixture described above, including the following steps:

[0046] Step 1: The operator positions and installs the lead screw nut 30, which needs to be bonded to the magnet 32, onto the first base 2 using a single positioning structure;

[0047] Step 2: The operator installs the support ring 4 on top of the first base 2 and positions the support ring 4 using the positioning unit;

[0048] Step 3: Adjust the position of several magnetic steel partition plates 5 by adjusting the structure, so that the several magnetic steel partition plates 5 form a uniform interval around the lead screw nut 30 with the same shape as the magnet 32;

[0049] Step 4: The operator attaches the magnet 32 ​​from the side into the interval formed by the pin 11 to achieve uniform bonding of the magnet 32. After the first round of several magnets 32 are bonded, the operator removes the support ring 4 from the first base 2.

[0050] Step 5: The operator places the lead screw nut 30 with the magnet 32 ​​attached onto the second base 3, and uses the secondary positioning structure to position and install the lead screw nut 30 onto the second base 3;

[0051] Step Six: The operator moves the support ring 4 onto the second base 3 and positions the support ring 4 on the second base 3 using the positioning unit;

[0052] Step 7: Adjust the position of several magnetic steel partition plates 5 by adjusting the structure. The magnetic steel partition plates 5 form a uniform interval around the lead screw nut 30 with the same shape as the magnet 32. The operator can then attach another ring of magnets 32 around the lead screw nut 30.

[0053] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A rotor magnet bonding tooling comprising an operating table (1), characterized in that, The top of the operating table (1) is fixedly connected to a first base (2) and a second base (3). A primary positioning structure is installed on the first base (2). The primary positioning structure is used to position the screw nut (30) of the first ring that needs to be bonded to the magnet (32). A secondary positioning structure is installed on the second base (3). The secondary positioning structure is used to position the screw nut (30) of the second ring that needs to be bonded to the magnet (32). The operating table (1) is provided with a support ring (4) above it. The first base (2) and the second base (3) are respectively equipped with positioning units that cooperate with the support ring (4). The support ring (4) is provided with several magnetic steel partition plates (5) arranged in a circular pattern above it. The support ring (4) is equipped with an adjustment structure for adjusting the position of several magnetic steel partition plates (5). The positioning unit includes several pins (11) that are fixedly installed on the top of the first base (2) and the second base (3), and the bottom of the support ring (4) is provided with several limiting grooves (12) that cooperate with the pins (11). The primary positioning structure includes two axial fixing plates (6), a first receiving groove (8) that cooperates with the two axial fixing plates (6) is provided on the first base (2), a slot (7) that cooperates with the boss (31) on the lead screw nut (30) is provided on the inner wall of the axial fixing plate (6), a plug (10) is fixedly connected to the bottom end of the axial fixing plate (6), a slot (9) that cooperates with the plug (10) is provided at the bottom of the inner wall of the first receiving groove (8), and the two plugs (10) are inserted into the corresponding slots (9); The secondary positioning structure includes a staggered positioning sleeve (13) disposed above the second base (3), a pin (11) on the second base (3) passing through the staggered positioning sleeve (13), a second receiving groove (33) provided on the second base (3), an axial fixing sleeve (14) cooperating with the lead screw nut (30) provided in the second receiving groove (33), the axial fixing sleeve (14) is located in the second receiving groove (33), the staggered positioning sleeve (13) is located above the axial fixing sleeve (14), and a plurality of first locking grooves (15) cooperating with the magnet (32) are provided on the inner wall of the staggered positioning sleeve (13).

2. The rotor magnet bonding tooling of claim 1, wherein, The adjustment structure includes a mounting ring (16) fixedly installed on the top of the support ring (4). Several guide rails (17) are provided above the mounting ring (16). The guide rails (17) and the mounting ring (16) are fixedly connected by several first bolts (18). A slider (19) is slidably sleeved on the outside of the guide rails (17). A mounting seat (21) is provided above the slider (19). The mounting seat (21) and the slider (19) are fixedly connected by several second bolts (22). The mounting seat (21) and the magnetic steel partition plate (5) are fixedly connected by a connecting block (20). A positioning unit that cooperates with the connecting block (20) is provided above the mounting ring (16).

3. The rotor magnet bonding tooling of claim 2, wherein, The mounting ring (16) has several grooves (24) that cooperate with the connecting block (20), and the connecting block (20) is slidably installed in the corresponding groove (24).

4. The rotor magnet bonding fixture according to claim 2, characterized in that, The mounting ring (16) has several positioning grooves (23) that cooperate with the guide rail (17), and the bottom end of the guide rail (17) is located in the positioning groove (23).

5. The rotor magnet bonding fixture according to claim 2, characterized in that, The positioning unit includes a locking ring (26) disposed above the mounting ring (16). The inner wall of the locking ring (26) is provided with several second locking grooves (28) that cooperate with the connecting blocks (20). The locking ring (26) is sleeved on the outside of several connecting blocks (20), and the side of the connecting block (20) away from the magnetic steel partition plate (5) abuts against the inner wall of the second locking groove (28). An outer expansion ring (25) is provided above the locking ring (26). The outer expansion ring (25) and the locking ring (26) are fixedly connected by several connecting posts (29). The outer wall of the outer expansion ring (25) is provided with an outer expansion groove (27) that cooperates with the connecting blocks (20).

6. A method for bonding rotor magnets, applied to the rotor magnet bonding fixture as described in claim 1, characterized in that: Includes the following steps: Step 1: The operator positions and installs the lead screw nut (30) to which the magnet (32) needs to be bonded onto the first base (2) using a single positioning structure; Step 2: The operator installs the support ring (4) above the first base (2) and positions the support ring (4) using the positioning unit; Step 3: Adjust the position of several magnetic steel partition plates (5) by adjusting the structure, and form a uniform interval around the lead screw nut (30) with the same shape as the magnet (32). Step 4: The operator attaches the magnet (32) from the side into the gap formed by the pin (11) to achieve uniform bonding of the magnet (32). After the first round of several magnets (32) are bonded, the operator removes the support ring (4) from the first base (2). Step 5: The operator places the lead screw nut (30) with the magnet (32) attached on the second base (3), and positions and installs the lead screw nut (30) on the second base (3) through the secondary positioning structure; Step 6: The operator moves the support ring (4) onto the second base (3) and positions the support ring (4) on the second base (3) using the positioning unit; Step 7: Adjust the position of several magnetic steel partition plates (5) by adjusting the structure. The magnetic steel partition plates (5) form a uniform interval around the lead screw nut (30) with the same shape as the magnet (32). The operator can then attach another ring of magnets (32) around the lead screw nut (30).

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