CN117155042A - Permanent magnet installation method and tool for three-phase permanent magnet synchronous variable frequency submersible motor - Google Patents
Permanent magnet installation method and tool for three-phase permanent magnet synchronous variable frequency submersible motor Download PDFInfo
- Publication number
- CN117155042A CN117155042A CN202311102077.5A CN202311102077A CN117155042A CN 117155042 A CN117155042 A CN 117155042A CN 202311102077 A CN202311102077 A CN 202311102077A CN 117155042 A CN117155042 A CN 117155042A
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- CN
- China
- Prior art keywords
- permanent magnet
- holes
- punching sheet
- rotor punching
- upper tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 5
- 238000009434 installation Methods 0.000 title abstract description 10
- 238000004080 punching Methods 0.000 claims abstract description 44
- 230000005389 magnetism Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a method and a tool for installing a permanent magnet of a three-phase permanent magnet synchronous variable-frequency submersible motor, wherein the method comprises the following steps: a. 2 assembly fixing rods at the diagonal positions in 4 through holes of the rotor punching sheet, and the other 2 through holes are free; the fixing hole of the upper tire corresponds to the fixing rod; the positioning shaft is inserted into the idle through hole; the lower end of the fixed rod is embedded into the circumferential groove of the lower tire; the permanent magnet enters the rotor punching sheet from the permanent magnet assembly hole of the upper tire; b. after the 6 permanent magnets are arranged in the rotor punching sheet, the positioning shaft and the upper tire are taken out, the upper tire is arranged on the rotor punching sheet again after rotating for 90 degrees, and the other 6 permanent magnets are assembled. The invention has the advantages that: 1. the installation efficiency is high, and all permanent magnet installation positions can be covered by rotating once. 2. The installation accuracy is high, and the mounting groove interval is big, and its length and width can reserve 0.5mm, and the installation can not take place the slope. 3. The magnetism isolating property is good. 4. The strength of the upper tire is greatly improved.
Description
Technical Field
The invention relates to the field of machinery, in particular to a motor manufacturing technology, and more particularly relates to a motor rotor manufacturing method and a tool used by the motor rotor manufacturing method.
Background
The performance of the permanent magnet material is continuously improved, and the motor efficiency, the power factor and the like are far higher than those of an asynchronous motor, so that the application of the permanent magnet motor is also added to the field of submersible motors.
In the production process of the permanent magnet motor, the structure of the motor rotor and the stator is important. Permanent magnets are required to be installed in the slots at the rotor of the permanent magnet motor, and normal coils are arranged at the stator. The structure of the rotor punching sheet 5 is shown in fig. 4, and comprises 4 symmetrical through holes 52 and 12 permanent magnet grooves 51, wherein the minimum gap between the permanent magnet grooves 51 is 5mm; in the prior art, a fixing rod is inserted into the through hole 52, and the two ends of the fixing rod are fastened by bolts, so that the axial direction and the radial direction of the punching sheet are positioned, then an operator puts the permanent magnet into the permanent magnet groove 51, and presses the permanent magnet into the rotor by using a press machine and other devices. Sometimes, in order to facilitate operation, a tool is also arranged, and comprises an upper tire with an integral slot, wherein the slot corresponds to the positions of the three permanent magnet slots, and the lower tire is provided with an independent circular concave hole so as to facilitate the insertion of the lower end of the fixing rod;
because the permanent magnet grooves are very close, the attraction force of the permanent magnet in the grooves is very large, when the upper tire with the integral grooves is installed, the permanent magnet is easy to deviate, and the deviation is easy to cause the phenomenon that a punching sheet and the permanent magnet directly send scratches, so that the quality of products is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for installing a permanent magnet of a three-phase permanent magnet synchronous variable frequency submersible motor, which comprises the following steps:
a. 2 assembly fixing rods at the diagonal positions in 4 through holes of the rotor punching sheet, and the other 2 through holes are free; the fixing hole of the upper tire corresponds to the fixing rod; the positioning holes of the upper tire correspond to the idle 2 through holes, and the positioning shaft is inserted into the idle through holes from the positioning holes; the 6 permanent magnet assembly holes of the upper tire correspond to the permanent magnet slots of the rotor punching sheet; the lower end of the fixed rod is embedded into the circumferential groove of the lower tire; the permanent magnet enters the rotor punching sheet from the permanent magnet assembly hole of the upper tire;
b. after 6 permanent magnets are installed in the rotor punching sheet, the positioning shaft and the upper tire are taken out, the idle 2 through holes are assembled with the fixing rods, then the previously assembled 2 fixing rods are taken out to vacate two through holes, the upper tire is reset on the rotor punching sheet after rotating by 90 degrees, and the positioning shaft is inserted into the newly vacated 2 through holes from the positioning holes, and the other 6 permanent magnets are assembled.
The invention further discloses a tool for realizing the method; the device comprises an upper tire and a lower tire, wherein the upper tire comprises a permanent magnet assembly hole, a fixing hole and a positioning hole; the positions of the fixing holes and the positioning holes correspond to the positions of the through holes of the rotor punching sheet, and the inner diameter of the fixing holes is larger than the outer diameter of the fixing rod end nut; the number of the permanent magnet assembly holes is 6, the number of the first quadrants and the third quadrants is 2, and the number of the second quadrants and the fourth quadrants is 1 in the plane of the upper tire; the position of each permanent magnet assembly hole corresponds to the permanent magnet slot of one punching sheet; after the upper tire rotates 90 degrees, the permanent magnet assembly holes correspond to the rest permanent magnet slots of the rotor punching sheet; the lower tire comprises a disc body, wherein a circumferential groove is formed in the disc body, and the depth of the circumferential groove is larger than the height of the fixing rod, which protrudes out of the rotor punching sheet.
The positioning shaft is a stepped shaft, and the diameters of the positioning hole of the upper tire and the end of the positioning shaft inserted into the rotor punching sheet correspond to the through hole of the rotor punching sheet, and the diameter of the part of the positioning shaft, which leaks out of the upper tire, is larger than the diameter of the end of the positioning shaft inserted into the rotor punching sheet.
The machine further comprises a workbench, a rotating shaft hole is formed in the workbench, the lower tire is arranged on the workbench, and the rotating shaft is inserted into the rotating shaft hole.
The invention has the advantages that:
1. the permanent magnet assembly upper tire is designed to adopt the advantage of intermittent slotting. 1. The installation efficiency is high, and all permanent magnet installation positions can be covered by rotating once. 2. The installation accuracy is high, and the mounting groove interval is big, and its length and width can reserve 0.5mm, and the installation can not take place the slope. 3. The magnetism isolating property is good. 4. The strength of the upper tire is greatly improved.
2. The design of the permanent magnet assembly lower tire adopts the advantage of circumferential slotting. The rotor can be directly placed above the clamping fixture, so that the preparation time is saved, and the efficiency is improved.
3. The mould has simple integral structure and good uniformity after assembly.
Drawings
FIG. 1 is a schematic view of the mounting positions of an upper tire, a lower tire and a rotor punching sheet of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view taken at the A-A position of FIG. 2;
FIG. 4 is a plan view of a rotor plate;
FIG. 5 is a schematic view of the upper tire structure;
FIG. 6 is a sectional view of the B-B position of FIG. 5;
FIG. 7 is a schematic view of the structure of the lower tire;
FIG. 8 is a cross-sectional view of the C-C position of FIG. 7;
fig. 9 is a schematic structural view of the positioning shaft.
Detailed Description
The invention is specifically described below with reference to the accompanying drawings, and as shown in the drawings, the invention comprises an upper tire 3 and a lower tire 4, wherein the upper tire 3 comprises a permanent magnet assembly hole 31, a fixing hole 32 and a positioning hole 33; the positions of the fixing holes and the positioning holes correspond to the positions of the through holes 52 of the rotor punching sheet, and the inner diameter of the fixing holes is larger than the outer diameter of the fixing rod end nut; the number of the permanent magnet assembly holes is 6, the number of the first quadrants and the third quadrants is 2, and the number of the second quadrants and the fourth quadrants is 1 in the plane of the upper tire; the position of each permanent magnet assembly hole corresponds to the permanent magnet slot of one punching sheet; after the upper tire rotates 90 degrees, the permanent magnet assembly holes correspond to the rest permanent magnet slots of the rotor punching sheet; the lower tire comprises a disc body, a circumferential groove 41 is formed in the disc body, and the depth of the circumferential groove is larger than the height of the fixing rod protruding out of the rotor punching sheet.
The positioning shaft is a stepped shaft, and the diameters of the positioning hole of the upper tire and the end of the positioning shaft inserted into the rotor punching sheet correspond to the through hole of the rotor punching sheet, and the diameter of the upper tire part 22, which is leaked out of the positioning shaft, is larger than the diameter of the end 21, inserted into the rotor punching sheet, of the positioning shaft.
The machine further comprises a workbench 6, a rotating shaft hole 61 is formed in the workbench, a lower tire is arranged on the workbench, and a rotating shaft 7 is inserted into the rotating shaft hole.
The application steps of the invention are as follows:
a. 2 assembling fixing rods 1 at opposite angles in 4 through holes of the rotor punching sheet, wherein the other 2 through holes are free; the fixing hole 32 of the upper tire 3 corresponds to the fixing rod 1; the positioning hole 33 of the upper tire corresponds to the idle 2 through holes, and the positioning shaft 2 is inserted into the idle through holes from the positioning hole 33; the 6 permanent magnet assembly holes 31 of the upper tire correspond to the permanent magnet slots 51 of the rotor punching sheet; the lower end of the fixed rod is embedded into the circumferential groove 41 of the lower tire; the permanent magnet enters the rotor punching sheet from the permanent magnet assembly hole 31 of the upper tire;
b. after 6 permanent magnets are installed in the rotor punching, the positioning shaft 2 and the upper tire 3 are taken out, the idle 2 through holes are assembled with the fixing rods 1, then the previously assembled 2 fixing rods are taken out to vacate two through holes, the upper tire is reset on the rotor punching after rotating by 90 degrees, and the positioning shaft 2 is inserted into the newly vacated 2 through holes from the positioning hole 33, and the other 6 permanent magnets are assembled.
Claims (4)
1. A method for installing a permanent magnet of a three-phase permanent magnet synchronous variable-frequency submersible motor is characterized by comprising the following steps:
a. 2 assembly fixing rods at the diagonal positions in 4 through holes of the rotor punching sheet, and the other 2 through holes are free; the fixing hole of the upper tire corresponds to the fixing rod; the positioning holes of the upper tire correspond to the idle 2 through holes, and the positioning shaft is inserted into the idle through holes from the positioning holes; the 6 permanent magnet assembly holes of the upper tire correspond to the permanent magnet slots of the rotor punching sheet; the lower end of the fixed rod is embedded into the circumferential groove of the lower tire; the permanent magnet enters the rotor punching sheet from the permanent magnet assembly hole of the upper tire;
b. after 6 permanent magnets are installed in the rotor punching sheet, the positioning shaft and the upper tire are taken out, the idle 2 through holes are assembled with the fixing rods, then the previously assembled 2 fixing rods are taken out to vacate two through holes, the upper tire is reset on the rotor punching sheet after rotating by 90 degrees, and the positioning shaft is inserted into the newly vacated 2 through holes from the positioning holes, and the other 6 permanent magnets are assembled.
2. A tooling for carrying out the method of claim 1; the method is characterized in that: the device comprises an upper tire and a lower tire, wherein the upper tire comprises a permanent magnet assembly hole, a fixing hole and a positioning hole; the positions of the fixing holes and the positioning holes correspond to the positions of the through holes of the rotor punching sheet, and the inner diameter of the fixing holes is larger than the outer diameter of the fixing rod end nut; the number of the permanent magnet assembly holes is 6, the number of the first quadrants and the third quadrants is 2, and the number of the second quadrants and the fourth quadrants is 1 in the plane of the upper tire; the position of each permanent magnet assembly hole corresponds to the permanent magnet slot of one punching sheet; after the upper tire rotates 90 degrees, the permanent magnet assembly holes correspond to the rest permanent magnet slots of the rotor punching sheet; the lower tire comprises a disc body, wherein a circumferential groove is formed in the disc body, and the depth of the circumferential groove is larger than the height of the fixing rod, which protrudes out of the rotor punching sheet.
3. The tooling of claim 2; the method is characterized in that: the positioning shaft is a stepped shaft, and the diameters of the positioning hole of the upper tire and the end of the positioning shaft inserted into the rotor punching sheet correspond to the through hole of the rotor punching sheet, and the diameter of the part of the positioning shaft, which leaks out of the upper tire, is larger than the diameter of the end of the positioning shaft inserted into the rotor punching sheet.
4. The tooling of claim 2; the method is characterized in that: the machine further comprises a workbench, a rotating shaft hole is formed in the workbench, the lower tire is arranged on the workbench, and the rotating shaft is inserted into the rotating shaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311102077.5A CN117155042A (en) | 2023-08-30 | 2023-08-30 | Permanent magnet installation method and tool for three-phase permanent magnet synchronous variable frequency submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311102077.5A CN117155042A (en) | 2023-08-30 | 2023-08-30 | Permanent magnet installation method and tool for three-phase permanent magnet synchronous variable frequency submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117155042A true CN117155042A (en) | 2023-12-01 |
Family
ID=88900049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311102077.5A Pending CN117155042A (en) | 2023-08-30 | 2023-08-30 | Permanent magnet installation method and tool for three-phase permanent magnet synchronous variable frequency submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117155042A (en) |
-
2023
- 2023-08-30 CN CN202311102077.5A patent/CN117155042A/en active Pending
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