Motor rotor magnetic steel installation tool

Abstract

The utility model discloses a motor rotor magnetic steel installation tool, which comprises a motor rotor and a magnetic steel inserter, the motor rotor comprises a rotor iron core, a plurality of magnetic steel slots extending along the axis direction are distributed on the rotor iron core in a circumferential array, the magnetic steel inserter comprises a magnetic steel guide pipe and a magnetic steel pushing device, and the magnetic steel guide pipe is connected with the magnetic steel insertion device. A magnetic steel strip guide channel is arranged in the magnetic steel guide pipe in the length direction, and when one end of the magnetic steel strip guide channel is aligned with any magnetic steel slot, the magnetic steel guide pipe can be detachably and fixedly installed on the rotor iron core through a locking piece. The magnetic steel pushing device can push the magnetic steel strips in the magnetic steel strip guide channel into the magnetic steel slots; through the screw rods fixedly arranged on the sides, close to the axis of the rotor iron core, of the magnetic steel slots, accurate installation of the magnetic steel guide pipe is completed, so that the magnetic steel strips can overcome resistance generated by the magnetic steel strips on the installation of the magnetic steel strips in the magnetic steel slots under the pushing of the magnetic steel strips pushing the screw rods, and the magnetic steel strips are accurately installed in the magnetic steel slots.

Description

Technical Field

[0001] The utility model belongs to the field of motor manufacturing, and more specifically to the manufacturing tooling for motor rotors. Background Art

[0002] In the field of modern motor manufacturing, the installation of motor rotor permanent magnets is a key technological process. Traditional methods for installing motor rotor permanent magnets usually rely on manual operation, which is not only inefficient. Moreover, due to the very large magnetism of the permanent magnets themselves, during the process of manually installing them onto the rotor core, the strong magnetic force generated by the permanent magnets themselves on the rotor core will hinder the installation work of the permanent magnets. Not only will there be a resistance that cannot be pushed by manpower during the process of pushing the permanent magnet into the magnet slot on the rotor core, but also the permanent magnet is easily damaged, and the magnetic pole direction is also prone to deviation, thus affecting the performance and operation stability of the motor.

[0003] In addition, due to the complex structure of the motor rotor, traditional installation methods for motor rotors often struggle to meet these strict requirements. This may result in the insecure installation of the permanent magnets, which are prone to displacement during motor operation, thereby affecting the magnetic field distribution and performance of the motor. Summary of the Invention

[0004] Object of the Invention: In order to overcome the deficiencies in the prior art, the utility model provides a tooling for installing motor rotor permanent magnets, which can not only ensure the accuracy and consistency of permanent magnet installation, improve the installation efficiency, minimize the influence of the magnetism of the permanent magnets themselves on the installation process as much as possible, realize the rapid, accurate and reliable installation of the permanent magnets, but also reduce the errors and uncertainties brought by manual operation, improve the production efficiency and quality of the motor, and reduce the production cost.

[0005] Technical Solution: To achieve the above object, a tooling for installing motor rotor permanent magnets includes a motor rotor and a magnet inserter. The motor rotor includes a rotor core, and a plurality of magnet slots extending in the axial direction are arranged in a circumferential array on the rotor core. The magnet inserter includes a magnet guiding tube and a magnet pushing device. A magnet bar guiding channel is arranged along the length direction inside the magnet guiding tube. When one end of the magnet bar guiding channel is aligned with any one of the magnet slots, the magnet guiding tube can be fixedly installed on the rotor core through a locking member in a detachable manner, and the magnet pushing device can push the magnet bar in the magnet bar guiding channel into the magnet slot.

[0006] Furthermore, a screw is fixed on one side of each magnet slot close to the axis of the rotor core; a positioning plate is vertically fixed on one side of the magnet guiding tube close to the rotor core. When one end of the magnet bar guiding channel is aligned with a magnet slot, the positioning plate can be locked on a screw through a locking member.

[0007] Further, a positioning channel is also provided through the magnet steel guide tube in the length direction. The positioning channel is arranged parallel to the magnet steel strip guide channel and below it. When one end of the magnet steel strip guide channel is aligned with a magnet steel slot, a screw corresponding to the magnet steel slot is inserted into one end of the positioning channel.

[0008] Further, a ring wall with a radius smaller than that of the rotor core is integrally provided coaxially at one end of the rotor core. An outer ring of the end of the ring wall away from the rotor core is integrally provided with a tooling ring coaxially, and a number of groups of process mounting holes are arranged in a circumferential array on the tooling ring.

[0009] Further, the pushing device includes a hole seat plate and a pushing screw. The hole seat plate is provided with a threaded through hole. The hole seat plate is locked on a group of process mounting holes on the tooling ring through a locking member and corresponds to the magnet steel guide tube locked on the rotor core. The pushing screw is in threaded cooperation with the threaded through hole, and one end of the pushing screw extends into the magnet steel strip guide channel.

[0010] Further, a magnet steel cushion block is movably arranged in the magnet steel strip guide channel. After the magnet steel strip is placed in the magnet steel strip guide channel, the magnet steel cushion block is located between the magnet steel strip and the end of the pushing screw.

[0011] Beneficial effects: An installation tool for the magnet steel of an electric motor rotor of the present utility model precisely installs the magnet steel guide tube by fixing a screw on one side of each magnet steel slot close to the axis of the rotor core. Under the push of the pushing screw, the magnet steel strip can overcome the resistance generated by its own magnetism to install the magnet steel strip into the magnet steel slot, and can be precisely installed in the magnet steel slot. This can not only ensure the accuracy and consistency of magnet steel installation, improve the installation efficiency, but also reduce the errors and uncertainties brought by manual operation, improve the production efficiency and quality of the electric motor, and reduce the production cost. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of an installation tool for the magnet steel of an electric motor rotor of the present utility model;

[0013] Figure 2 is an enlarged structural diagram of the rotor core of the present utility model;

[0014] Figure 3 is a schematic structural diagram of the magnet steel inserter of the present utility model;

[0015] Figure 4 is a schematic structural diagram of the hole seat plate of the present utility model. Detailed Embodiment

[0016] The following further describes the present utility model with reference to the drawings.

[0017] As shown in the attachedFigures 1 to 4 As shown in the figure, a magnetic steel installation tooling for a motor rotor includes a motor rotor 1 and a magnetic steel inserter 2. The motor rotor 1 includes a rotor core 11, and a number of magnetic steel slots 12 extending along the axis direction of the rotor core 11 are arranged in a circumferential array on the rotor core 11. The magnetic steel inserter 2 includes a magnetic steel guide tube 21 and a magnetic steel pushing device. A magnetic steel strip guide channel 211 is arranged along the length direction inside the magnetic steel guide tube 21, and the magnetic steel strip guide channel 211 penetrates through the entire magnetic steel guide tube 21 along the length direction. When one end of the magnetic steel strip guide channel 211 is aligned with any one of the magnetic steel slots 12, the magnetic steel guide tube 21 can be detachably fixedly installed on the rotor core 11 through a locking member. At this time, the magnetic steel pushing device can push the magnetic steel strip 4 in the magnetic steel strip guide channel 211 into the magnetic steel slot 12 to complete a magnetic steel installation process.

[0018] One end of the rotor core 11 is coaxially and integrally provided with an annular wall 12 with a radius smaller than that of the rotor core 11. A number of magnetic steel slots 12 extending along the axis direction of the rotor core 11 and a number of screws 13 corresponding to the magnetic steel slots 12 and arranged in a circumferential array are arranged in a circumferential array on the stepped surface between the rotor core 11 and the annular wall 12. A screw 13 is fixed on one side of each magnetic steel slot 12 close to the axis of the rotor core 11; on one side of one end of the magnetic steel guide tube 21 close to the rotor core 11, a positioning plate 22 is vertically fixed. The positioning plate 22 is a part extending from one end of the magnetic steel guide tube 21 to one side, and the positioning plate 22 is integrally arranged with the magnetic steel guide tube 21. A positioning hole 221 matching with the screw 13 is arranged on the positioning plate 22. When one end of the magnetic steel strip guide channel 211 is aligned with one end of a magnetic steel slot 12, the screw 13 on the rotor core 11 passes through the positioning hole 221 on the positioning plate 22, and the positioning plate 22 is locked on the screw 13 through a nut threadedly matched with the screw 13 to position and fix the magnetic steel guide tube 21.

[0019] The upper surfaces of the magnetic steel guide tube 21 and the fixing plate 22 are both a section of arc surface with the same radius as that of the rotor core 11, and the lower surfaces of the magnetic steel guide tube 21 and the fixing plate 22 are both a section of arc surface with the same radius as that of the annular wall 16; a positioning channel 212 is also arranged through the magnetic steel guide tube 21 along the length direction. The positioning channel 212 is arranged parallel to the lower part of the magnetic steel strip guide channel 211. When one end of the magnetic steel strip guide channel 211 is aligned with one magnetic steel slot 12, one screw 13 corresponding to the magnetic steel slot 12 is inserted into one end of the positioning channel 212 to position the magnetic steel guide tube 21; the positioning functions of the screw 13 on the positioning hole 221 and the positioning channel 212 can make the lower surfaces of the magnetic steel guide tube 21 and the positioning plate 22 closely fit with the annular wall 16. At this time, the upper surfaces of the magnetic steel guide tube 21 and the positioning plate 22 are aligned with the surface of the rotor core 11.

[0020] One end of the ring wall 12 away from the rotor core 11 is coaxially and integrally provided with a tooling ring 14 on the outer circle. A number of groups of process installation holes 15 are arranged in a circumferential array on the tooling ring 14, and each group of process installation holes 15 has two holes; the pushing device includes a hole seat plate 3 and a pushing screw 23. The hole seat plate 3 is provided with a threaded through hole 31 and a seat plate installation hole 32. The aperture sizes of the seat plate installation hole 32 and the process installation hole 15 are the same. The seat plate installation hole 32 on the hole seat plate 3 and the process installation hole 15 are locked on a group of process installation holes 15 of the tooling ring 14 through bolts and correspond to the magnet guiding tube 21 locked on the rotor core 11. The hole seat plate 3 presses the magnet guiding tube 21 tightly between the hole seat plate 3 and the rotor core 11; the pushing screw 23 is in threaded cooperation with the threaded through hole 31, and one end of the pushing screw 23 is provided with a rotary wrench; when one end of the magnet bar guiding channel 211 is aligned with a magnet slot 12, the other end of the pushing screw 23 extends into the magnet bar guiding channel 211. At this time, the rotary wrench is started to rotate the pushing screw 23, so that the length of the pushing screw 23 extending into the magnet bar guiding channel 211 increases, and a uniform thrust is generated on the magnet bar 4. Finally, the pushing screw 23 pushes the magnet bar 4 into the magnet slot 12.

[0021] In order to ensure that the magnet bar 4 can be smoothly pushed into the magnet slot 12 from the magnet bar guiding channel 211 by the pushing screw 23, the magnet guiding tube 21 and the fixing plate 22 are cast from non-magnetic materials, and a magnet pad 24 is movably arranged in the magnet bar guiding channel 211. The magnet pad 24 can not only make the installation process of the magnet bar 4 simpler, but also prevent the pushing screw 23 from directly contacting the magnet bar 4 and damaging the surface of the magnet bar 4; after the magnet bar 4 is placed in the magnet bar guiding channel 211, the magnet pad 24 is placed between the magnet bar 4 and the end of the pushing screw 23 to prevent the pushing screw 23 from directly contacting the magnet bar 4 and damaging the surface of the magnet bar 4.

[0022] The motor rotor 1 with the magnet installation tooling will be subjected to running tests. Since the motor rotor 1 will rotate at a high speed during operation, in order to prevent the strong centrifugal force generated by the high-speed rotation from causing the position of the magnet bar 4 in the magnet slot 12 to shift, special magnet glue should be evenly applied to the magnet bar 4 before the magnet bar 4 is installed in the magnet slot 12, and a magnet slot cover plate is fixed and locked at the notch of the magnet slot 12 where the magnet bar 4 is installed through a screw 13 and a nut.

[0023] A magnet installation tooling for a motor rotor has the following usage steps:

[0024] Step 1: Press one end of the magnet guiding tube 21 with the fixing plate 22 against the step surface between the rotor core 11 and the ring wall 12, and insert a screw 13 corresponding to the magnet slot 12 into the positioning channel 212 on the magnet guiding tube 21.

[0025] Step 2: A screw 13 on the rotor core 11 adjacent to Step 1 passes through the positioning hole 221 on the positioning plate 22, and the positioning plate 22 is locked on the screw 13 by a nut threadedly engaged with the screw 13, completing the positioning of the magnet guide tube 21, so that one end of the magnet strip guide channel 211 on the magnet guide tube 21 is aligned with a magnet slot 12.

[0026] Step 3: Take out the magnet strip 4 and confirm its magnetic poles. Apply special magnet glue evenly on the magnet strip 4 with confirmed magnetic poles, and then insert the magnet strip 4 coated with special magnet glue into the magnet strip guide channel 211 of the magnet guide tube 21.

[0027] Step 4: Insert the magnet pad 24 into the magnet strip guide channel 211 of the magnet guide tube 21.

[0028] Step 5: Pass a bolt through the seat plate mounting hole 32 on the hole seat plate 3, and the seat plate mounting hole 32 and the process mounting hole 15 are locked on a group of process mounting holes 15 of the tooling ring 14, so that the magnet guide tube 21 is press-fitted between the hole seat plate 3 and the rotor core 11, completing the installation process of the magnet guide tube 21.

[0029] Step 6: Threadedly engage the push rod 23 with the threaded through hole 31 on the hole seat plate 3, and extend one end of the push rod through the threaded through hole 31 into the magnet strip guide channel 211 of the magnet guide tube 21.

[0030] Step 7: Start the rotary wrench at the other end of the push rod 23. The rotary wrench rotates the push rod 23, increasing the length of the push rod 23 extending into the magnet strip guide channel 211 and generating a uniform thrust on the magnet pad 24. The magnet pad 24 can push the magnet strip 4 along the magnet strip guide channel 211 into the magnet slot 12 on the rotor core 11.

[0031] Step 8: After completing Step 6, remove the nut on the positioning plate 22 and the bolt on the hole seat plate 3, and take out the magnet pad 24 from the magnet strip guide channel 211 through the push rod 23.

[0032] Step 9: Install a magnet slot cover plate at the mouth of the magnet slot 12 where the magnet strip 4 is installed through the screw 13 with a nut.

[0033] Repeating all the above processes can complete the work of installing magnet strips in all the magnet slots 13 of the entire motor rotor 1.

[0034] The above are the preferred embodiments described in the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A motor rotor magnetic steel installation tool, characterized in that: The invention comprises a motor rotor (1) and a magnetic steel inserter (2), wherein the motor rotor (1) comprises a rotor core (11), and the rotor core (11) is provided with a plurality of magnetic steel slots (12) extending in an axial direction in a circumferential array, and the magnetic steel inserter (2) comprises a magnetic steel guide tube (21) and a magnetic steel push-up device, wherein a magnetic steel bar guide channel (211) is provided in the extension direction of the magnetic steel guide tube (21), and when one end of the magnetic steel bar guide channel (211) is aligned with any magnetic steel slot (12), the magnetic steel guide tube (21) can be fixedly installed on the rotor core (11) by a locking member and can be disassembled, and the magnetic steel push-up device can push the magnetic steel bar (4) in the magnetic steel bar guide channel (211) into the magnetic steel slot (12).

2. The motor rotor magnetic steel installation tool according to claim 1, characterized in that: A screw rod (13) is fixed to one side of each magnetic steel slot (12) close to the axis of the rotor core (11); a positioning plate (22) is vertically fixed to one side of the magnetic steel guide tube (21) close to one end of the rotor core (11); when one end of the magnetic steel bar guide channel (211) is aligned with a magnetic steel slot (12), the positioning plate (22) can be locked on a screw rod (13) by a locking member.

3. The motor rotor magnetic steel installation tool according to claim 2, characterized in that: A positioning channel (212) is also provided through the magnetic steel guide tube (21) in the extension direction. The positioning channel (212) is provided in parallel below the magnetic steel bar guide channel (211). When one end of the magnetic steel bar guide channel (211) is aligned with a magnetic steel slot (12), a screw rod (13) corresponding to the magnetic steel slot (12) is inserted into one end of the positioning channel (212).

4. The motor rotor magnetic steel installation tool according to claim 1, characterized in that: An annular wall (16) having a radius smaller than that of the rotor core (11) is integrally provided coaxially at one end of the rotor core (11); a tooling ring (14) is integrally provided coaxially at the outer ring of one end of the annular wall (16) away from the rotor core (11); and a plurality of groups of process installation holes (15) are provided in a circumferential array on the tooling ring (14).

5. The motor rotor magnetic steel installation tool according to claim 1, characterized in that: The ejection device comprises a hole seat plate (3) and an ejection screw (23); the hole seat plate (3) is provided with a threaded through hole (31); the hole seat plate (3) is locked on a group of process mounting holes (15) on a tooling ring (14) through a locking piece, and corresponds to a magnetic steel guide tube (21) locked on a rotor core (11); the ejection screw (23) is threadedly matched with the threaded through hole (31), and one end of the ejection screw (23) extends into the magnetic steel bar guide channel (211).

6. The motor rotor magnetic steel installation tool according to claim 5, characterized in that: A magnetic steel pad (24) is movably arranged in the magnetic steel bar guide channel (211); when the magnetic steel bar (4) is placed in the magnetic steel bar guide channel (211), the magnetic steel pad (24) is between the magnetic steel bar (4) and the end of the ejector screw (23).

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