Motor rotor and production process thereof

Abstract

The invention discloses a motor rotor and a production process thereof, the motor rotor comprises a rotor core and a permanent magnet, the rotor core is provided with a mounting groove, the permanent magnet penetrates through and is mounted in the mounting groove, and the mounting groove is in interference fit with the permanent magnet; the invention provides a production method of a motor rotor, which comprises the following steps of: 1, carrying out heat treatment and punch forming on a silicon steel plate material to obtain a silicon steel sheet; step 2, stacking, namely stacking the silicon steel sheets on polishing equipment one by one for stacking and positioning; the mounting groove body is ground and polished through polishing equipment; step 3, inserting a permanent magnet to position and install the permanent magnet; the polishing equipment comprises a polishing table and a polishing bin installed on the polishing table, four sets of supporting legs are arranged at the four corners of the bottom of the polishing table, a positioning structure is arranged at the bottom of the polishing table, and a supporting block and a supporting column are arranged on the polishing table. The invention relates to the technical field of motors, and particularly provides a motor rotor and a production process thereof.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor rotor and a production process thereof. Background Art

[0002] The motor rotor is the rotating part of the motor. The rotor is usually composed of a rotor core with wound coils, a rotating shaft, fan blades, etc. The rotor core is formed by stacking and stamping silicon steel sheets. However, it is difficult to keep the slot shape of the rotor core neat and smooth after stacking and forming, because permanent magnets need to be embedded in the rotor core slots. If the slots are not smooth enough, the core cross-section will be inaccurate, which not only makes the permanent magnet embedding process difficult, but also affects the performance of the motor.

[0003] The existing processing method is to grind the slots of the rotor core. The silicon steel sheets need to be precisely positioned before the grinding process. The traditional method is to perform nested positioning through a mold, and then grind and polish the core slots; after searching CN202111680915.8, a motor rotor, a motor, and a motor rotor production equipment and process can be installed with a corresponding number of polishing units according to the different number of rotor core slots, and the polishing units are driven to reciprocate by a driving unit to achieve repeated polishing of the rotor core slots. However, the rotor core is pressed and tightened by a clamping unit during the grinding process, which has a complex structure and poor stability. In addition, the impurities and debris generated during the grinding process cannot be handled. Summary of the invention

[0004] To solve the above technical problems, the present invention provides the following technical solutions: This solution provides a motor rotor, including a rotor core and a permanent magnet, the rotor core is provided with a mounting slot, the permanent magnet passes through and is installed in the mounting slot, and the mounting slot is interference fit with the permanent magnet.

[0005] The present invention provides a method for producing a motor rotor, comprising the following steps:

[0006] Step 1: heat-treating the silicon steel plate material and stamping it to obtain a silicon steel sheet;

[0007] Step 2: stacking, stacking the silicon steel sheets one by one on the polishing equipment, and positioning them; polishing the installation tank body by the polishing equipment;

[0008] Step 3: Insert the permanent magnet to position and install the permanent magnet.

[0009] Furthermore, the polishing equipment includes a grinding table and a grinding chamber installed on the grinding table, four groups of supporting legs are provided at the four corners of the bottom of the grinding table, a positioning structure is provided at the bottom of the grinding table, a supporting block and a supporting column are provided on the grinding table, and a grinding structure, a clamping structure and a dust removal structure are provided in the grinding chamber; the positioning structure includes a support frame, a driving motor, a driving screw, a lifting support plate and a positioning protrusion, the support frame is arranged at the bottom of the grinding table, both ends of the driving screw are rotatably arranged between the support frame and the grinding table, the lifting support plate is slidably arranged on the opposite side walls of the support frame, the lifting support plate is threadedly connected to the driving screw, the positioning protrusion is installed on the lifting support plate, the upper end of the positioning protrusion passes through the grinding table and extends to the top of the grinding table, and the positioning protrusion is set corresponding to the size of the mounting groove.

[0010] Furthermore, the grinding structure includes an electric telescopic rod, a grinding support seat and a grinding piece. The two ends of the grinding support seat are slidably arranged on the opposite side walls in the grinding chamber. The electric telescopic rod is arranged at the top of the grinding chamber and the free end is connected to the grinding support seat. The grinding piece is arranged at the bottom of the grinding support seat. The cross-sectional size of the grinding piece is matched with the mounting groove body. The bottom of the grinding rod is chamfered to facilitate insertion into the mounting groove body.

[0011] Furthermore, the clamping structure includes a clamping bin, a clamping motor, a clamping screw, a driving rod and a clamping block, the clamping bin is arranged on the rear wall of the grinding bin, a guide groove is opened on the clamping bin, both ends of the clamping screw are rotatably arranged on opposite side walls in the clamping bin, the clamping motor is arranged on the side wall of the clamping bin and the power output shaft is connected to the clamping screw, the clamping screw is provided with two groups of thread groups with opposite thread directions, the driving rod is provided with two groups of thread groups with opposite thread directions respectively connected by threads, the clamping block is arranged on the other end of the driving rod, and the opposite side wall of the clamping block is provided with an arc-shaped pressing block.

[0012] Furthermore, the dust removal structure includes a fan and a dust collector, and the fan and the dust collector are respectively arranged on the outer side walls of the grinding chamber, and the opposite side walls inside the grinding chamber are respectively provided with a blowing nozzle and a dust suction nozzle, the blowing nozzle is connected to the fan, and the dust suction nozzle is connected to the dust collector.

[0013] Furthermore, a protective door is hinged on the front side of the grinding chamber, and a transparent window and a controller are provided on the protective door. The fan, vacuum cleaner, clamping motor, electric telescopic rod and driving motor are all electrically connected to the controller.

[0014] The present invention proposes a motor rotor and a production process thereof, and the beneficial effects achieved by adopting the above structure are as follows:

[0015] (1) The silicon steel sheets are stacked one by one to achieve preliminary positioning through the cooperation of the support frame, drive motor, drive screw, lifting support plate and positioning convex block, and the outer side of the rotor core that has completed the preliminary positioning is clamped through the cooperation of the clamping bin, clamping motor, clamping screw, drive rod and clamping block, and the positioning convex block is retracted, and then the electric telescopic rod, grinding support seat and grinding piece are used to perform efficient and accurate grinding;

[0016] (2) Impurities generated during the grinding process are blown away and absorbed by the provided fan and vacuum cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a motor rotor and its production process proposed by the present invention;

[0019] Figure 2 The internal structure of a motor rotor and its production process proposed by the present invention is schematically shown. Figure 1 ;

[0020] Figure 3 The internal structure of a motor rotor and its production process proposed by the present invention is schematically shown. Figure 2 ;

[0021] Figure 4 The internal structure of a motor rotor and its production process proposed by the present invention is schematically shown. Figure 3 ;

[0022] Figure 5 A schematic diagram of a clamping structure of a motor rotor and a production process thereof proposed by the present invention;

[0023] Figure 6 A schematic diagram of a rotor core of a motor rotor and a production process thereof proposed in the present invention.

[0024] Among them, 1. rotor core, 2. mounting trough, 3. grinding table, 4. grinding bin, 5. support legs, 6. positioning structure, 7. support block, 8. support column, 9. grinding structure, 10. clamping structure, 11. dust removal structure, 12. support frame, 13. drive motor, 14. drive screw, 15. lifting support plate, 16. positioning convex block, 17. electric telescopic rod, 18. grinding support seat, 19. grinding part, 20. clamping bin, 21. clamping motor, 22. clamping screw, 23. drive rod, 24. clamping block, 25. arc pressure holding block, 26. fan, 27. vacuum cleaner, 28. blowing nozzle, 29. dust nozzle, 30. protective door, 31. transparent window, 32. controller. DETAILED DESCRIPTION

[0025] The technical invention in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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 work are within the scope of protection of the present invention.

[0026] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0027] like Figures 1 to 6 As shown, the technical invention adopted by the present invention is as follows: a motor rotor, including a rotor core 1 and a permanent magnet, the rotor core 1 is provided with a mounting slot 2, the permanent magnet passes through and is installed in the mounting slot 2, and the mounting slot 2 is interference fit with the permanent magnet.

[0028] The present invention provides a method for producing a motor rotor, comprising the following steps:

[0029] Step 1: heat-treating the silicon steel plate material and stamping it to obtain a silicon steel sheet;

[0030] Step 2: stacking, stacking the silicon steel sheets one by one on the polishing equipment, and positioning them; polishing the installation tank body 2 by the polishing equipment;

[0031] Step 3: Insert the permanent magnet to position and install the permanent magnet.

[0032] like Figures 1 to 4As shown, the polishing equipment includes a grinding table 3 and a grinding chamber 4 installed on the grinding table 3, four groups of supporting legs 5 are provided at the four corners of the bottom of the grinding table 3, a positioning structure 6 is provided at the bottom of the grinding table 3, a supporting block 7 and a supporting column 8 are provided on the grinding table 3, and a grinding structure 9, a clamping structure 10 and a dust removal structure 11 are provided in the grinding chamber 4; the positioning structure 6 includes a support frame 12, a driving motor 13, a driving screw 14, a lifting support plate 15 and a positioning protrusion 16, the support frame 12 is arranged at the bottom of the grinding table 3, the two ends of the driving screw 14 are rotatably arranged between the support frame 12 and the grinding table 3, the lifting support plate 15 is slidably arranged on the opposite side wall of the support frame 12, and the lifting support plate 15 and the driving screw 14 are rotatably arranged between the support frame 12 and the grinding table 3, and the lifting support plate 15 is slidably arranged on the opposite side wall of the support frame 12, and the lifting support plate 15 and the driving screw 14 are rotatably arranged between the support frame 12 and the grinding table 3. The screw 14 is threadedly connected, and the positioning protrusion 16 is installed on the lifting support plate 15. The upper end of the positioning protrusion 16 passes through the grinding table 3 and extends to the top of the grinding table 3. The positioning protrusion 16 is set corresponding to the size of the mounting groove body 2; the grinding structure 9 includes an electric telescopic rod 17, a grinding support seat 18 and a grinding piece 19. The two ends of the grinding support seat 18 are slidably arranged on the opposite side walls in the grinding bin 4. The electric telescopic rod 17 is arranged at the top of the grinding bin 4 and the free end is connected to the grinding support seat 18. The grinding piece 19 is arranged at the bottom of the grinding support seat 18. The cross-sectional size of the grinding piece 19 is matched with the mounting groove body 2, and the bottom of the grinding piece 19 is chamfered to facilitate insertion into the mounting groove body 2.

[0033] like Figure 5 As shown, the clamping structure 10 includes a clamping bin 20, a clamping motor 21, a clamping screw 22, a driving rod 23 and a clamping block 24. The clamping bin 20 is arranged on the rear wall of the grinding bin 4, and a guide groove is provided on the clamping bin 20. The two ends of the clamping screw 22 are rotatably arranged on the opposite side walls in the clamping bin 20. The clamping motor 21 is arranged on the side wall of the clamping bin 20 and the power output shaft is connected to the clamping screw 22. The clamping screw 22 is provided with two sets of thread groups with opposite thread directions. The driving rod 23 is provided with two sets of thread groups with opposite thread directions. The two thread groups are connected by threads, and the thread groups are respectively opposite to the two thread groups in the direction opposite to each other. The clamping block 24 is arranged on the other end of the driving rod 23, and the opposite side wall of the clamping block 24 is provided with an arc-shaped pressing block 25; the dust removal structure 11 includes a fan 26 and a dust collector 27, the fan 26 and the dust collector 27 are respectively arranged on the outer side walls of the grinding chamber 4, and the opposite side walls in the grinding chamber 4 are respectively provided with a blowing nozzle 28 and a dust suction nozzle 29, the blowing nozzle 28 is connected to the fan 26, and the dust suction nozzle 29 is connected to the dust collector 27.

[0034] Among them, a protective door 30 is hinged on the front side of the grinding chamber 4, and a transparent window 31 and a controller 32 are provided on the protective door 30. The fan 26, the vacuum cleaner 27, the clamping motor 21, the electric telescopic rod 17 and the drive motor 13 are all electrically connected to the controller 32.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor rotor, characterized in that: The invention comprises a rotor core and a permanent magnet. The rotor core is provided with a mounting slot body. The permanent magnet penetrates and is mounted in the mounting slot body. The mounting slot body and the permanent magnet are interference fit.

2. A production process for a motor rotor according to claim 1, characterized in that: The specific steps include: Step 1: heat-treating the silicon steel plate material and stamping it to obtain a silicon steel sheet; Step 2: stacking, stacking the silicon steel sheets one by one on the polishing equipment, and positioning them; polishing the installation tank body by the polishing equipment; Step 3: Insert the permanent magnet to position and install the permanent magnet.

3. The production process of a motor rotor according to claim 2, characterized in that: The polishing equipment includes a polishing table and a polishing chamber installed on the polishing table, four groups of supporting legs are provided at the four corners of the bottom of the polishing table, a positioning structure is provided at the bottom of the polishing table, a supporting block and a supporting column are provided on the polishing table, and a polishing structure, a clamping structure and a dust removal structure are provided in the polishing chamber; the positioning structure includes a support frame, a driving motor, a driving screw, a lifting support plate and a positioning protrusion, the support frame is arranged at the bottom of the polishing table, both ends of the driving screw are rotatably arranged between the support frame and the polishing table, the lifting support plate is slidably arranged on the opposite side walls of the support frame, the lifting support plate is threadedly connected to the driving screw, the positioning protrusion is installed on the lifting support plate, the upper end of the positioning protrusion passes through the polishing table and extends to the top of the polishing table, and the positioning protrusion is set corresponding to the size of the mounting groove.

4. A production process for a motor rotor according to claim 3, characterized in that: The grinding structure includes an electric telescopic rod, a grinding support seat and a grinding piece. The two ends of the grinding support seat are slidably arranged on the opposite side walls in the grinding chamber. The electric telescopic rod is arranged at the top of the grinding chamber and the free end is connected to the grinding support seat. The grinding piece is arranged at the bottom of the grinding support seat. The cross-sectional size of the grinding piece is matched with the mounting groove body, and the bottom of the grinding rod is chamfered.

5. The production process of a motor rotor according to claim 4, characterized in that: The clamping structure includes a clamping bin, a clamping motor, a clamping screw, a driving rod and a clamping block. The clamping bin is arranged on the rear wall of the grinding bin, and a guide groove is opened on the clamping bin. Both ends of the clamping screw are rotatably arranged on opposite side walls in the clamping bin. The clamping motor is arranged on the side wall of the clamping bin and the power output shaft is connected to the clamping screw. Two groups of thread groups with opposite thread directions are arranged on the clamping screw. The driving rod is provided with two groups of thread groups with opposite thread directions, respectively, and the clamping block is arranged on the other end of the driving rod, and an arc-shaped pressing block is provided on the opposite side wall of the clamping block.

6. A production process for a motor rotor according to claim 5, characterized in that: The dust removal structure includes a fan and a dust collector, which are respectively arranged on the outer side walls of the grinding chamber, and the opposite side walls in the grinding chamber are respectively provided with a blowing nozzle and a dust suction nozzle, the blowing nozzle is connected to the fan, and the dust suction nozzle is connected to the dust collector.

7. A production process for a motor rotor according to claim 6, characterized in that: A protective door is hinged on the front side of the grinding bin, a transparent window and a controller are arranged on the protective door, and the fan, the vacuum cleaner, the clamping motor, the electric telescopic rod and the driving motor are all electrically connected to the controller.

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