CN117870960A - Dynamic balance test method for outer rotor of permanent magnet direct drive motor - Google Patents
Dynamic balance test method for outer rotor of permanent magnet direct drive motor Download PDFInfo
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- CN117870960A CN117870960A CN202311625359.3A CN202311625359A CN117870960A CN 117870960 A CN117870960 A CN 117870960A CN 202311625359 A CN202311625359 A CN 202311625359A CN 117870960 A CN117870960 A CN 117870960A
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Abstract
The invention discloses a dynamic balance test method for an outer rotor of a permanent magnet direct drive motor, and relates to the technical field of dynamic balance verification. It comprises the following steps: assembling the dynamic balance dummy shaft, the left expansion sleeve, the right expansion sleeve, the front end cover, the rear end cover and the rotor into a whole, disassembling the dynamic balance dummy shaft from the rotor after each part number and corresponding identification line are manufactured, then reassembling the dynamic balance dummy shaft, the right expansion sleeve and the locking nut according to the corresponding identification line, finishing a dynamic balance test on the assembled dynamic balance dummy shaft according to the set parameters, then reassembling the assembled dynamic balance dummy shaft onto the rotor according to the corresponding identification line, and finishing rotor dynamic balance verification by reserving weight removing bosses at two ends of the rotor according to the set parameters. The invention realizes dynamic balance verification of the outer rotor without a rotating shaft structure and without balance block mounting grooves or mounting screw holes at two ends; the device has the advantages of simple and reliable structure, strong practicability, convenient operation and maintenance, low cost and convenient disassembly and assembly, and is suitable for small-batch manufacturing of the novel outer rotor.
Description
Technical Field
The invention relates to the technical field of dynamic balance verification, in particular to a dynamic balance test method for an outer rotor of a permanent magnet direct drive motor.
Background
The conventional permanent magnet direct drive motor rotor at the present stage is of an inner rotor structure, dynamic balance is verified by adopting a weighting method of adding a balancing block, so that the unbalanced quantity of the rotor after dynamic balance meets design requirements.
Based on the above, the applicant provides a dynamic balance test method for an outer rotor of a permanent magnet direct drive motor to solve the above technical problems.
Disclosure of Invention
The invention provides a dynamic balance test method for an outer rotor of a permanent magnet direct drive motor aiming at the defects in the prior art.
The invention is solved by the following technical scheme:
a dynamic balance test method for an outer rotor of a permanent magnet direct drive motor comprises the following steps:
step A: respectively installing a front end cover and a rear end cover at corresponding positions of two ends of the rotor, fastening bolts, and simultaneously making a mark A;
and (B) step (B): the left expansion sleeve and the right expansion sleeve are respectively arranged on the rear end cover and the front end cover, the front end outer cover is arranged on the front end cover, bolts are fastened, and meanwhile, a mark B is made;
step C: placing the front end of the assembled rotor on a vertical supporting table downwards after vertical lifting, lifting the dynamic balance dummy shaft to the position right above the rotor, aligning the center of the rotor, slowly falling until the front end conical surface and the rear end conical surface of the dynamic balance dummy shaft are respectively abutted with the right expansion sleeve and the left expansion sleeve, installing a locking nut on a thread corresponding to the front end of the dynamic balance dummy shaft, fastening, and simultaneously making a mark C;
step D: after the dynamic balance dummy shaft, the front end outer cover, the locking nut and the right expansion sleeve assembled on the rotor are disassembled, the right expansion sleeve is reinstalled on the front end conical surface of the dynamic balance dummy shaft according to the mark C, the locking nut is fastened in place again according to the mark C, the whole body composed of the reassembled dynamic balance dummy shaft, the right expansion sleeve and the locking nut is hoisted on an automatic weight-removing dynamic balance machine, the parameter S of the dynamic balance machine is set, the automatic weight-removing dynamic balance machine is started to complete the whole dynamic balance test of the dynamic balance dummy shaft, and the final unbalance of two sides is recorded、/>；
Step E: d, disassembling the lock nut and the right expansion sleeve on the dynamic balance dummy shaft, reassembling the disassembled right expansion sleeve, the dynamic balance dummy shaft and the front outer cover disassembled in the step D with the rotor according to the marks B and C respectively, then fastening and installing the lock nut according to the mark C, integrally hoisting the assembled rotor on an automatic weight-removing dynamic balance machine, setting the parameter Q of the dynamic balance machine, starting the automatic weight-removing dynamic balance machine to complete the weight-removing dynamic balance test of the rotor and recording the final unbalance quantity of the two sides、/>；
Step F: the rotor is integrally hoisted to a vertical supporting table, and after the lock nut, the dynamic balance dummy shaft, the left expansion sleeve and the right expansion sleeve are disassembled, the rotor is placed in a turn-over horizontal mode, and the front end outer cover, the rear end outer cover, the front end cover and the rear end cover are disassembled.
Preferably, the mark A in the step A comprises a position mark line A corresponding to the front end cover and marked at the joint of the rotor and the front end cover and a position mark line B corresponding to the rear end cover and marked at the joint of the rotor and the rear end cover.
Preferably, the mark a in the step a further includes a number marked on the head of each bolt, and the same number marked on the front end cover and the rear end cover corresponding to the positions of the bolts.
Preferably, the mark B in the step B comprises a position identification line C corresponding to the rear end cover and marked at the joint of the left expansion sleeve and the rear end cover, a position identification line D corresponding to the front end cover and marked at the joint of the right expansion sleeve and the front end cover, and a position identification line E corresponding to the front end cover and marked at the joint of the front end cover and the front end cover.
Preferably, in the step C, the dynamic balance dummy shaft is lifted through a process screw hole arranged at the rear end.
Preferably, the mark C in the step C comprises a mark line F marked at the joint of the rear end conical surface of the dynamic balance dummy shaft and the left expansion sleeve and a mark line G marked at the joint of the front end conical surface of the dynamic balance dummy shaft and the right expansion sleeve.
Preferably, the mark C in the step C further comprises an anti-loosening marked line marked at the joint of the dynamic balance dummy shaft and the lock nut.
Preferably, the dynamic balancer parameters S in step D include a distance a from the roller supporting point of the dynamic balancer to the duplication eliminating position of the rear dummy shaft, a distance b from the duplication eliminating position of the rear dummy shaft to the duplication eliminating position of the front dummy shaft, a distance c from the duplication eliminating position of the front dummy shaft to the roller supporting point of the dynamic balancer, and front dummy shaft duplication eliminatingHeavy working radiusWorking radius of rear end dummy shaft de-duplication position +.>The rotating speed of the dynamic balancing machine is set according to the rated rotating speed N of the motor, and the maximum allowable unbalance amount is calculated according to the national standard G1.0 requirement>、/>The device is provided with a plurality of channels,
based on the dynamic balance calculation of the rigid rotor,
，
，
the unbalance amount is calculated by a formula,
，
in the method, in the process of the invention,permissible unbalance representing rotor unit mass (+)>），/>Indicating rotor operating angular velocity +.>Wherein->For rotor speed>Represents balance levels, totally 11 balance levels, +.>Representing the allowable unbalance of the rotor, +.>Indicating rotor mass->Representing the allowable residual unbalance amount of each correction plane, +.>The working radius is indicated as such,
the product can be obtained by the method,
，
。
preferably, the method comprises the steps of,in (I)>。
Preferably, the dynamic balancer parameters Q in step E include a distance a from a roller support point of the dynamic balancer to the rear end weight-removing boss, a distance B from the rear end weight-removing boss to the front end weight-removing boss, a distance C from the front end weight-removing boss to the roller support point of the dynamic balancer, and a working radius of the front end weight-removing bossThe working radius of the rear end weight-removing boss is +.>The rotating speed of the dynamic balancing machine is set according to the rated rotating speed N of the motor, and the maximum allowable unbalance amount is calculated according to the requirements of national standard G2.5Value->、/>The device is provided with a plurality of channels,
based on the dynamic balance calculation of the rigid rotor,
，
，
the unbalance amount is calculated by a formula,
，
in the method, in the process of the invention,permissible unbalance representing rotor unit mass (+)>），/>Indicating rotor operating angular velocity +.>Wherein->For rotor speed>Represents balance levels, totally 11 balance levels, +.>Representing the allowable unbalance of the rotor, +.>Indicating rotor mass->Representing the allowable residual unbalance amount of each correction plane, +.>The working radius is indicated as such,
the product can be obtained by the method,
，
。
preferably, the method comprises the steps of,in (I)>。
Preferably, after the rotor de-duplication dynamic balance test is completed in the step E, the surface of the connection part of the rotor and each component is marked with a uniform number.
Preferably, the taper of the front end conical surface and the taper of the rear end conical surface are the same as the taper of the taper surface A in the left expansion sleeve and the taper of the taper surface B in the right expansion sleeve, and the taper ranges from 15 degrees to 20 degrees.
Preferably, the roughness of the front end taper and the rear end taper is not more than 1.6 microns.
Preferably, the contact rate of the left expansion sleeve and the rear end conical surface and the contact rate of the right expansion sleeve and the front end conical surface are not lower than 85%.
Preferably, the axial width of the front end conical surface is greater than the width of the corresponding mounting groove A in the front end cover, and the axial width of the rear end conical surface is greater than the width of the corresponding mounting groove B in the rear end cover.
Preferably, the surface roughness of the left expansion sleeve and the right expansion sleeve is not more than 1.6 micrometers.
Preferably, the left expansion sleeve and the rear end cover are in transition fit, and the right expansion sleeve and the front end cover are in transition fit.
Preferably, the lock nut comprises a large end ring part and a small head part, the outer diameter of the large end ring part is smaller than the inner diameter of the front end outer cover, the inner diameter of the large end ring part is larger than the minimum diameter of the taper surface B, and the small head part is processed into a hexagon nut shape.
The invention has the beneficial effects that: the dynamic balance check of the novel outer rotor without a rotating shaft structure and without balance block mounting grooves or mounting screw holes at two ends is realized; the device has the advantages of simple and reliable structure, strong practicability, convenient operation and maintenance, low cost and convenient disassembly and assembly, and is suitable for small-batch manufacturing of the novel outer rotor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following discussion will discuss the embodiments or the drawings required in the description of the prior art, and it is obvious that the technical solutions described in connection with the drawings are only some embodiments of the present invention, and that other embodiments and drawings thereof can be obtained according to the embodiments shown in the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of a tool belt rotor for an outer rotor dynamic balance test of a permanent magnet direct drive motor.
Fig. 2 is a reference diagram of overall dynamic balance parameters of the rotor of the permanent magnet direct drive motor outer rotor dynamic balance test tool belt rotor.
Fig. 3 is a schematic diagram of a vertical installation structure of an outer rotor dynamic balance test tool of the permanent magnet direct drive motor.
Fig. 4 is a schematic structural diagram of a part of the dynamic balance test tool for the outer rotor of the permanent magnet direct drive motor.
Fig. 5 is a reference diagram of test parameters of the outer rotor dynamic balance test tool of the permanent magnet direct drive motor.
FIG. 6 is a cross-sectional view of a dynamic balance dummy shaft structure according to the present invention.
Fig. 7 is a schematic view of the construction of the clinch nut of the present invention.
Fig. 8 is a cross-sectional view of the construction of the clinch nut of the present invention.
Fig. 9 is a schematic view of the left expansion shell of the present invention.
Fig. 10 is a schematic view of a rotating section at A-A of fig. 9.
Fig. 11 is a schematic cross-sectional view at B-B of fig. 10.
Fig. 12 is a schematic view of the right expansion shell of the present invention.
Fig. 13 is a schematic view of a rotated cross-section at C-C of fig. 12.
Fig. 14 is a schematic cross-sectional view at D-D of fig. 13.
In the figure: 1. a dynamic balance dummy shaft, 2, a left expansion sleeve, 3, a right expansion sleeve, 4, a lock nut, 5, a rear end outer cover, 6, a rear end cover, 7, a rotor, 8 and a front end cover, 9, a front end outer cover, 10, a vertical supporting table, 11, a process screw hole, 12, a rear end conical surface, 13, a front end conical surface, 14 and threads.
Detailed Description
The following description of the embodiments of the present invention will be made in detail and with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present invention. All other embodiments, which can be made by a person of ordinary skill in the art without the need for inventive faculty, are within the scope of the invention, based on the embodiments described in the present invention.
Example 1:
as shown in fig. 1 to 14, the method for testing the dynamic balance of the outer rotor of the permanent magnet direct drive motor comprises the following steps: step A: the front end cover 8 and the rear end cover 6 are respectively arranged at the corresponding positions of the two ends of the rotor 7, a marking pen is used for marking a marking line A at the joint of the rotor 7 and the front end cover 8 and a marking line B at the joint of the rotor 7 and the rear end cover 6 and corresponding to the rear end cover 6, bolts are fastened, the head of each bolt is marked with a marking pen for marking a number, and the positions of the corresponding bolts on the front end cover 8 and the rear end cover 6 are marked with the same number by the marking pen; and (B) step (B): the left expansion sleeve 2 and the right expansion sleeve 3 are respectively arranged on the rear end cover 6 and the front end cover 8, and a marker pen is usedMarking a position mark line C corresponding to the rear end cover 6 at the joint of the left expansion sleeve 2 and the rear end cover 6 and marking a position mark line D corresponding to the front end cover 8 at the joint of the right expansion sleeve 3 and the front end cover 8, mounting the front end outer cover 9 on the front end cover 8, fastening bolts, and marking a position mark line E corresponding to the front end cover 8 at the joint of the front end outer cover 9 and the front end cover 8 by using a marker; step C: placing the assembled rotor 7 on a vertical supporting table 10 with the front end downwards, lifting the dynamic balance dummy shaft 1 right above the rotor 7 through a process screw hole 11 arranged at the rear end, aligning the center of the rotor 7, slowly falling until a front end conical surface 13 and a rear end conical surface 12 of the dynamic balance dummy shaft 1 are respectively abutted with a right expansion sleeve 3 and a left expansion sleeve 2, marking a marking line F at the joint of the rear end conical surface 12 of the dynamic balance dummy shaft 1 and the left expansion sleeve 2 by using a marking pen and marking a marking line G at the joint of the front end conical surface 13 of the dynamic balance dummy shaft 1 and the right expansion sleeve 3, installing a locking nut 4 on a thread 14 corresponding to the front end of the dynamic balance dummy shaft 1, completing fastening, and marking a locking marking line at the joint of the dynamic balance dummy shaft 1 and the locking nut 4 by using the marking pen; step D: after the dynamic balance dummy shaft 1, the front end outer cover 9, the lock nut 4 and the right expansion sleeve 3 assembled on the rotor 7 are disassembled, the right expansion sleeve 3 is reinstalled on the front end conical surface 13 of the dynamic balance dummy shaft 1 according to the mark C, the lock nut 4 is fastened in place again according to the mark C, the whole formed by the reassembled dynamic balance dummy shaft 1, the right expansion sleeve 3 and the lock nut 4 is hoisted on an automatic weight-removing dynamic balance machine, the parameter S of the dynamic balance machine is set, the automatic weight-removing dynamic balance machine is started to complete the whole dynamic balance test of the dynamic balance dummy shaft, and the final unbalance quantity of two sides is recordedThe method comprises the steps of carrying out a first treatment on the surface of the Step E: disassembling the lock nut 4 and the right expansion sleeve 3 on the dynamic balance dummy shaft 1, reassembling the disassembled right expansion sleeve 3, the dynamic balance dummy shaft 1 and the front end outer cover 9 disassembled in the step D with the rotor 7 according to the mark B and the mark C respectively, then fastening and installing the lock nut 4 according to the mark C, integrally hoisting the assembled rotor 7 on an automatic dynamic balance machine, setting the parameter Q of the dynamic balance machine, starting the automatic dynamic balance machine to complete the dynamic balance test of the rotor and recording the final unbalance of two sides>Marking the joint surfaces of the rotor 7 and each part with a marking pen to obtain a unified number; step F: the rotor 7 is integrally hoisted to a vertical supporting table 10, and after the lock nut 4, the dynamic balance dummy shaft 1, the left expansion sleeve 2 and the right expansion sleeve 3 are disassembled, the rotor 7 is placed in a turn-over horizontal mode, and the front end outer cover 9, the rear end outer cover 5, the front end cover 8 and the rear end cover 6 are disassembled.
The dynamic balancer parameters S in the step D comprise a distance a from a roller supporting point of the dynamic balancer to a rear dummy shaft de-duplication position, a distance b from the rear dummy shaft de-duplication position to a front dummy shaft de-duplication position, a distance c from the front dummy shaft de-duplication position to a roller supporting point of the dynamic balancer, and a working radius of the front dummy shaft de-duplication positionWorking radius of rear end dummy shaft de-duplication position +.>The rotating speed of the dynamic balancing machine is set according to the rated rotating speed N of the motor, and the maximum allowable unbalance amount is calculated according to the national standard G1.0 requirement>The device is provided with a plurality of channels,
based on the dynamic balance calculation of the rigid rotor,
，
，
the unbalance amount is calculated by a formula,
，
in the method, in the process of the invention,permissible unbalance representing rotor unit mass (+)>），/>Indicating rotor operating angular velocity +.>Wherein->For rotor speed>Represents balance levels, totally 11 balance levels, +.>Representing the allowable unbalance of the rotor, +.>Indicating rotor mass->Representing the allowable residual unbalance amount of each correction plane, +.>The working radius is indicated as such,
the product can be obtained by the method,
wherein->，
Wherein->。
When (when)And->And if the test is qualified, otherwise, repeating the test again after the weight is removed until the test is qualified.
The dynamic balancing machine parameters Q in the step E comprise a distance A from a roller supporting point of the dynamic balancing machine to a rear-end weight-removing boss, a distance B from the rear-end weight-removing boss to a front-end weight-removing boss, a distance C from the front-end weight-removing boss to the roller supporting point of the dynamic balancing machine, and a working radius of the front-end weight-removing bossThe working radius of the rear end weight-removing boss is +.>The rotating speed of the dynamic balancing machine is set according to the rated rotating speed N of the motor, and the maximum allowable unbalance amount is calculated according to the calculated value required by national standard G2.5>、/>The device is provided with a plurality of channels,
based on the dynamic balance calculation of the rigid rotor,
，
，
the unbalance amount is calculated by a formula,
，
in the method, in the process of the invention,permissible unbalance representing rotor unit mass (+)>），/>Indicating rotor operating angular velocity +.>Wherein->For rotor speed>Represents balance levels, totally 11 balance levels, +.>Representing the allowable unbalance of the rotor, +.>Indicating rotor mass->Representing the allowable residual unbalance amount of each correction plane, +.>The working radius is indicated as such,
the product can be obtained by the method,
wherein->，
Wherein->。
When (when)And->And if the test is qualified, otherwise, repeating the test again after the weight is removed until the test is qualified.
The taper of the front end conical surface 13 and the taper of the rear end conical surface 12 are the same as the taper of the taper surface A in the left expansion sleeve 2 and the taper of the taper surface B in the right expansion sleeve 3, the taper ranges from 15 degrees to 20 degrees, the roughness of the front end conical surface 13 and the rear end conical surface 12 is not more than 1.6 micrometers, the contact rate of the left expansion sleeve 2 and the rear end conical surface 12 and the contact rate of the right expansion sleeve 3 and the front end conical surface 13 are not less than 85%, the axial width of the front end conical surface 13 is larger than the width of a corresponding mounting groove A in the front end cover 8, the axial width of the rear end conical surface 12 is larger than the width of a corresponding mounting groove B in the rear end cover 6, the surface roughness of the left expansion sleeve 2 and the right expansion sleeve 3 is not more than 1.6 micrometers, the left expansion sleeve 2 and the rear end cover 6 are in transition fit, the right expansion sleeve 3 and the front end cover 8 are in transition fit, the hexagonal nut 8 is in the inner diameter of the small end cover, the small end cover is in the inner diameter of the small end cover, and the small end cover is in the diameter of the small end cover.
In other embodiments, the dynamic balance dummy shaft 1 and the rotor 7 may be fixed by bolts or the like.
In other embodiments, the rotor de-weight dynamic balance test can be verified by welding the balance weight by a weighting method.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A dynamic balance test method for an outer rotor of a permanent magnet direct drive motor is characterized by comprising the following steps of: the method comprises the following steps:
step A: the front end cover (8) and the rear end cover (6) are respectively arranged at the corresponding positions of the two ends of the rotor (7) and are fastened with bolts, a position identification line A corresponding to the front end cover (8) is marked at the joint of the rotor (7) and the front end cover (8), a position identification line B corresponding to the rear end cover (6) is marked at the joint of the rotor (7) and the rear end cover (6), the head of each bolt is marked with a number, and the positions of the corresponding bolts on the front end cover (8) and the rear end cover (6) are marked with the same number;
and (B) step (B): the method comprises the steps of respectively installing a left expansion sleeve (2) and a right expansion sleeve (3) on a rear end cover (6) and a front end cover (8), installing a front end outer cover (9) on the front end cover (8) and fastening bolts, marking a position mark line C corresponding to the rear end cover (6) at the joint of the left expansion sleeve (2) and the rear end cover (6), marking a position mark line D corresponding to the front end cover (8) at the joint of the right expansion sleeve (3) and the front end cover (8), and marking a position mark line E corresponding to the front end cover (8) at the joint of the front end outer cover (9) and the front end cover (8);
step C: placing the assembled rotor (7) on a vertical supporting table (10) with the front end downwards, lifting the dynamic balance dummy shaft (1) to be right above the rotor (7), aligning the center of the rotor (7), slowly falling until the front end conical surface (13) and the rear end conical surface (12) of the dynamic balance dummy shaft (1) are respectively abutted with the right expansion sleeve (3) and the left expansion sleeve (2), marking a marking line F at the joint of the rear end conical surface (12) of the dynamic balance dummy shaft (1) and the left expansion sleeve (2) and marking a marking line G at the joint of the front end conical surface (13) of the dynamic balance dummy shaft (1) and the right expansion sleeve (3), installing a locking nut (4) on a thread (14) corresponding to the front end of the dynamic balance dummy shaft (1), and finishing fastening, marking a locking marking line at the joint of the dynamic balance dummy shaft (1) and the locking nut (4);
step D: after the dynamic balance dummy shaft (1), the front end outer cover (9), the lock nut (4) and the right expansion sleeve (3) assembled on the rotor (7) are disassembled, the right expansion sleeve (3) is remounted on the front end conical surface (13) of the dynamic balance dummy shaft (1) according to the identification line G, the lock nut (4) is fastened in place again according to the anti-loose mark, the whole formed by the reassembled dynamic balance dummy shaft (1), the right expansion sleeve (3) and the lock nut (4) is hoisted on an automatic dynamic balance machine, the parameters S of the dynamic balance machine are set, and the automatic dynamic balance machine is started to complete the dynamic balance test of the dynamic balance dummy shaft and record the final unbalance quantity at two sides、/>；
Step E: disassembling a lock nut (4) and a right expansion sleeve (3) on a dynamic balance dummy shaft (1), disassembling the right expansion sleeve (3), the dynamic balance dummy shaft (1) and a front end outer cover (9) disassembled in the step D, respectively reassembling according to a mark line D, a mark line E, a mark line F, a mark line G and a rotor (7), then fastening and installing the lock nut (4) according to a loose-proof mark line, integrally hoisting the assembled rotor (7) to an automatic balance machine, setting a parameter Q of the dynamic balance machine, starting the automatic balance machine to finish a rotor balance test, and recording final unbalance quantities at two sides、/>；
Step F: the rotor (7) is integrally lifted to the vertical supporting table (10), and after the lock nut (4), the dynamic balance dummy shaft (1), the left expansion sleeve (2) and the right expansion sleeve (3) are disassembled, the rotor (7) is placed in a turn-over horizontal mode, and the front end outer cover (9), the rear end outer cover (5), the front end cover (8) and the rear end cover (6) are disassembled.
2. The method for testing the dynamic balance of the outer rotor of the permanent magnet direct drive motor according to claim 1, wherein the method comprises the following steps: and C, lifting the dynamic balance dummy shaft (1) through a process screw hole (11) arranged at the rear end.
3. The method for testing the dynamic balance of the outer rotor of the permanent magnet direct drive motor according to claim 1, wherein the method comprises the following steps: the dynamic balancer parameters S in the step D comprise a distance a from a roller supporting point of the dynamic balancer to a rear dummy shaft de-duplication position, a distance b from the rear dummy shaft de-duplication position to a front dummy shaft de-duplication position, a distance c from the front dummy shaft de-duplication position to a roller supporting point of the dynamic balancer, and a working radius of the front dummy shaft de-duplication positionWorking radius of rear end dummy shaft de-duplication position +.>The rotating speed of the dynamic balancing machine is set according to the rated rotating speed N of the motor, and the maximum allowable unbalance amount is calculated according to the national standard G1.0 requirement>、/>The device is provided with a plurality of channels,
based on the dynamic balance calculation of the rigid rotor,
，
，
the unbalance amount is calculated by a formula,
，
in the method, in the process of the invention,permissible unbalance representing rotor unit mass (+)>），/>Indicating the operating angular velocity of the rotor,wherein->For rotor speed>Represents balance levels, totally 11 balance levels, +.>Representing the allowable unbalance of the rotor, +.>Indicating rotor mass->Representing the allowable residual unbalance amount of each correction plane, +.>The working radius is indicated as such,
the product can be obtained by the method,
，
。
4. the method for testing the dynamic balance of the outer rotor of the permanent magnet direct drive motor according to claim 3, wherein the method comprises the following steps of:in (I)>。
5. The method for testing the dynamic balance of the outer rotor of the permanent magnet direct drive motor according to claim 1, wherein the method comprises the following steps: the dynamic balancing machine parameters Q in the step E comprise a distance A from a roller supporting point of the dynamic balancing machine to a rear-end weight-removing boss, a distance B from the rear-end weight-removing boss to a front-end weight-removing boss, a distance C from the front-end weight-removing boss to the roller supporting point of the dynamic balancing machine, and a working radius of the front-end weight-removing bossThe working radius of the rear end weight-removing boss is +.>The rotating speed of the dynamic balancing machine is set according to the rated rotating speed N of the motor, and the maximum allowable unbalance amount is calculated according to the calculated value required by national standard G2.5>、/>The device is provided with a plurality of channels,
based on the dynamic balance calculation of the rigid rotor,
，
，
the unbalance amount is calculated by a formula,
，
in the method, in the process of the invention,permissible unbalance representing rotor unit mass (+)>），/>Indicating the operating angular velocity of the rotor,wherein->For rotor speed>Represents balance levels, totally 11 balance levels, +.>Representing the allowable unbalance of the rotor, +.>Indicating rotor mass->Representing the allowable residual unbalance amount of each correction plane, +.>The working radius is indicated as such,
the product can be obtained by the method,
，
。
6. the method for testing the dynamic balance of the outer rotor of the permanent magnet direct drive motor according to claim 5, wherein the method comprises the following steps:in (I)>。
7. The method for testing the dynamic balance of the outer rotor of the permanent magnet direct drive motor according to claim 1, wherein the method comprises the following steps: and E, after the rotor de-duplication dynamic balance test is completed, marking the surface of the rotor (7) and the joint of each part with a uniform number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311625359.3A CN117870960A (en) | 2023-11-30 | 2023-11-30 | Dynamic balance test method for outer rotor of permanent magnet direct drive motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311625359.3A CN117870960A (en) | 2023-11-30 | 2023-11-30 | Dynamic balance test method for outer rotor of permanent magnet direct drive motor |
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| CN117870960A true CN117870960A (en) | 2024-04-12 |
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| CN202311625359.3A Pending CN117870960A (en) | 2023-11-30 | 2023-11-30 | Dynamic balance test method for outer rotor of permanent magnet direct drive motor |
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| Country | Link |
|---|---|
| CN (1) | CN117870960A (en) |
-
2023
- 2023-11-30 CN CN202311625359.3A patent/CN117870960A/en active Pending
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