CN111463957A - Motor dynamic balance adjusting device and method - Google Patents
Motor dynamic balance adjusting device and method Download PDFInfo
- Publication number
- CN111463957A CN111463957A CN201911180333.6A CN201911180333A CN111463957A CN 111463957 A CN111463957 A CN 111463957A CN 201911180333 A CN201911180333 A CN 201911180333A CN 111463957 A CN111463957 A CN 111463957A
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- Prior art keywords
- dynamic balance
- motor
- disc
- dynamic
- balancing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- 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
- H02K15/16—Centering rotors within the stator; Balancing rotors
- H02K15/165—Balancing the rotor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a motor dynamic balance adjusting device, which relates to the technical field of motor dynamic balance adjustment and comprises a dynamic balance disc and a plurality of balance bodies, wherein the dynamic balance disc is fixedly sleeved at the shaft extension end of a motor shaft, each balance body is fixedly arranged at different positions of the end surface of the dynamic balance disc, and the dynamic balance of a motor is adjusted by adjusting the positions and the number of the balance bodies on the dynamic balance disc, and the motor dynamic balance adjusting method comprises the following steps: firstly, rotor dynamic balance adjustment is carried out on the rotor; then fixedly sleeving the motor dynamic balance adjusting device on the shaft extension end of the motor shaft, wherein one end face of the dynamic balance disc, which is not provided with the balance body, presses a bearing in the motor; and finally, the dynamic balance of the motor is adjusted by adjusting the position and the number of the balancing bodies on the dynamic balance disc.
Description
Technical Field
The invention relates to the technical field of motor dynamic balance adjustment, in particular to a motor dynamic balance adjusting device and a motor dynamic balance adjusting method.
Background
The motor is in the course of the work, the motor is whole can produce vibrations because of the rotation of motor output shaft, motor vibrations can make the great reduction in life-span of motor, the vibrations of motor shaft extension end especially can arouse the wearing and tearing of bearing, and then lead to motor work to be out of order, the dynamic balance of conventional accommodate motor at present just carries out the correction of unbalance amount on the rotor, the rotor dynamic balance precision of conventional motor can only reach G2.5, and only be applicable to the lower motor of rotational speed, to exceeding 8000 motor commentaries on classics, it is big still to have the whole vibrations of motor, the big shortcoming of noise to go forward the dynamic balance of rotor to adjust back.
Disclosure of Invention
The invention aims to provide a motor dynamic balance adjusting device and a method thereof, which are used for solving the problems in the prior art, improving the dynamic balance precision of a motor, reducing the vibration of the motor and prolonging the service life of a bearing and a motor shaft.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a dynamic balance adjusting device of a motor, which comprises a dynamic balance disc and a plurality of balance bodies, wherein the dynamic balance disc is a circular dynamic balance disc, the dynamic balance disc is used for fixedly sleeving an axial extension end of a motor shaft, each balance body is used for being fixedly arranged on different positions of the end surface of the dynamic balance disc, and the dynamic balance of the motor is adjusted by adjusting the positions and the number of the balance bodies on the dynamic balance disc.
Preferably, the inner hole of the dynamic balance disc is a threaded hole, and the dynamic balance disc is connected to the shaft extension end of the motor shaft in a threaded mode.
Preferably, a plurality of first threaded holes are uniformly formed in the end face of the dynamic balance disc, threads are arranged on the balance body, and the balance body is in threaded connection with the first threaded holes.
Preferably, the first threaded hole is a blind hole.
Preferably, the balancing body is a screw.
Preferably, the number of the first threaded holes is 8-12, and the first threaded holes are M4 threaded holes.
The invention also provides a motor dynamic balance adjusting method, which comprises the following steps:
step 1: carrying out rotor dynamic balance adjustment on the rotor;
step 2: fixedly sleeving any one motor dynamic balance adjusting device on the shaft extension end of the motor shaft, wherein one end face of the dynamic balance disc, which is not provided with the balance body, is pressed on a bearing in the motor;
and step 3: the dynamic balance of the motor is adjusted by adjusting the positions and the number of the balancing bodies on the dynamic balance disc.
Preferably, the step 2 further comprises: drilling a plurality of second threaded holes in a gear encoder of the motor shaft, wherein the second threaded holes are used for installing the screws; the step 3 further comprises: the dynamic balance of the motor is adjusted by adjusting the position and the number of the screws on the gear.
Preferably, step 2 further includes sleeving a labyrinth ring on the outer wall of the dynamic balance ring, wherein the labyrinth ring is in clearance fit with the outer wall of the dynamic balance disc, and the labyrinth ring is fixedly arranged on the front end cover of the motor.
Compared with the prior art, the invention has the following technical effects:
the invention provides a motor dynamic balance adjusting device, which comprises a dynamic balance disc and a plurality of balance bodies, wherein the dynamic balance disc is fixedly sleeved at the shaft extension end of a motor shaft, each balance body is fixedly arranged at different positions of the end surface of the dynamic balance disc, the mass distribution of the motor shaft is uniform as much as possible by adjusting the positions and the number of the balance bodies on the dynamic balance disc, the mass of each mass point on the motor shaft is ensured to be consistent with that of the other mass point symmetrical to the axis of the motor shaft, the two symmetrical mass points on the shaft generate two centrifugal forces with the same size and the opposite directions when the motor shaft rotates, and the centrifugal forces generated by the symmetrical mass points are mutually offset, so that the aim of reducing the vibration of the motor shaft is fulfilled, the dynamic balance of the motor is adjusted, and the aim of reducing the vibration.
The invention also discloses a motor dynamic balance adjusting method, which comprises the following steps: step 1: carrying out rotor dynamic balance adjustment on the rotor; step 2: fixedly fixing the motor dynamic balance adjusting device on the shaft extension end of a motor shaft, and pressing a bearing in a motor by an end face of a dynamic balance disc, which is not provided with a balancing body; and step 3: the dynamic balance adjusting method of the motor comprises the steps of firstly carrying out dynamic balance adjustment on a rotor in the motor, then further sleeving a dynamic balance device at the shaft extension end of the motor shaft to carry out integral dynamic balance adjustment on the motor shaft, controlling the vibration of the motor shaft to the maximum extent, and further damaging the motor shaft and the bearing due to the relative vibration between the motor shaft and the bearing caused by the vibration of the motor shaft.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front view of a dynamic balance disk and labyrinth ring provided by the present invention;
fig. 2 is a sectional view of the dynamic balance adjustment device of the motor according to the third embodiment mounted on the motor;
FIG. 3 is a schematic diagram of an encoder according to a third embodiment;
in the figure: 1-dynamic balance disc, 2-first threaded hole, 3-labyrinth ring, 4-motor shaft, 5-encoder display screen, 6-bearing, 7-end cover, 8-gear, 9-second threaded hole and 10-encoder nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a motor dynamic balance adjusting device and a method thereof, which are used for solving the problems in the prior art, improving the dynamic balance precision of a motor, reducing the vibration of the motor and prolonging the service life of a bearing and a motor shaft.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
The present embodiment provides a dynamic balance adjusting device for a motor, as shown in fig. 1 to 3, comprising a dynamic balance disk 1 and a plurality of balance bodies, wherein the dynamic balance disk 1 is a circular dynamic balance disk, the dynamic balance disk 1 is used to be fixedly sleeved on the shaft extension end of a motor shaft 4, each balance body is used to be fixedly arranged on different positions of the end surface of the dynamic balance disk 1, the dynamic balance of the motor is adjusted by adjusting the position and number of the balance bodies on the dynamic balance disk 1, further explained as, the mass distribution of the motor shaft 4 is uniform by adjusting the position and number of the balance bodies on the dynamic balance disk 1, it is ensured that each mass point on the motor shaft 4 is consistent with the mass point of another mass point symmetrical to the axis thereof, when the motor shaft 4 rotates, two symmetrical mass points on the shaft 4 generate consistent sizes, two centrifugal forces in opposite directions, the centrifugal forces generated by each symmetrical mass point cancel each other, thereby achieving the purpose of reducing the vibration of the motor shaft 4, and then the dynamic balance of the adjustment motor reaches the purpose that reduces motor vibrations, because motor shaft 4 vibrations can arouse the relative vibrations between motor shaft 4 and the bearing 6 again, and then damages motor shaft 4 and bearing 6, consequently, after reducing the vibrations of motor shaft 4, the holistic vibrations of motor also can reduce, and the life of bearing 6 and motor shaft 4 also can increase.
Further, the hole of dynamic balance dish 1 is the screw hole, and 1 threaded connection of dynamic balance dish is in the axle extension end of motor shaft 4, and threaded connection easily dismouting, and joint strength is better, also can adopt the joint under the special circumstances.
Further, evenly seted up the first screw hole 2 of a plurality of on the terminal surface of dynamic balance dish 1, be equipped with the screw thread on the balancing body, balancing body threaded connection is in first screw hole 2, the balancing body is easily dismantled from first screw hole 2, the first screw hole 2 of 1 terminal surface of dynamic balance dish all is close to the outer wall of dynamic balance dish 1, the volume and the quality of single balancing body should not be too big, the quality of single balancing body is less, its adjustable dynamic balance precision is higher.
Further, first screw hole 2 is the blind hole, avoids installing the balance body in first screw hole 2 backs, and the balance body can stretch out other structures that influence the motor from another terminal surface of dynamic balance dish 1.
Furthermore, the balancing body is a screw, and the screws are standard parts and do not need to be manufactured independently.
Further, the number of the first threaded holes 2 is 8-12, preferably 12, but not limited to 8-12, the specific number of the first threaded holes 2 is determined in practical operation, and the first threaded holes 2 are M4 threaded holes and are not limited to M4 threaded holes.
Example two
This embodiment provides another kind of motor dynamic balance adjusting device, including a smooth dynamic balance dish, smooth dynamic balance dish is the ring form, and smooth dynamic balance dish is used for the fixed cover to locate the axle extension end of motor shaft, and the staff is through boring a plurality of holes on smooth dynamic balance dish and come to subtract heavy processing to smooth dynamic balance dish.
Furthermore, the sizes of the holes punched by the smooth dynamic balance disc can be inconsistent, and the sizes of the holes are determined according to the required de-weighting degree.
Further, the holes in the smooth dynamic balance disc can be tapped into threaded holes for mounting screws.
EXAMPLE III
The embodiment provides a motor dynamic balance adjusting method, as shown in fig. 1 to 3, which includes the following steps:
step 1: the dynamic balance adjustment of the rotor can be carried out by using a conventional method for removing and weighting the rotor, and the dynamic balance adjustment of the rotor can also be carried out by using the dynamic balance device in the first embodiment or the second embodiment;
step 2: the motor dynamic balance adjusting device in the first embodiment is fixedly sleeved at the shaft extension end of the motor shaft 4, and one end face of the dynamic balance disc 1, which is not provided with the balance body, presses the bearing 6 in the motor, so that the connection of the components of the motor is compact, the gravity center of the whole motor is as close to the center of the whole motor as possible, and the vibration of the whole motor is controlled to the maximum extent;
and step 3: the dynamic balance of the motor is adjusted by adjusting the position and the number of the balancing bodies on the dynamic balance disc 1.
Further, step 2 further comprises: a plurality of second threaded holes 9 are drilled in a gear 8 in a gear encoder of the motor shaft 4, the dynamic balance disc 1 does not need to be independently installed at the tail end of the motor shaft 4, the gear 8 in the gear encoder is fully utilized, and the second threaded holes 9 are used for installing screws; step 3 also includes: the dynamic balance of the motor is adjusted by adjusting the positions and the number of the screws on the gear 8, and a worker can simultaneously remove weight and weight of the dynamic balance disc 1 and the gear 8, so that the mass distribution of each part of the motor shaft 4 is uniform, the vibration control of the motor shaft 4 is further completed, and the dynamic balance adjusting process of the whole motor is completed.
Furthermore, step 2 still includes that a labyrinth ring 3 is established to the cover on the outer wall of dynamic balance ring, labyrinth ring 3 and 1 outer wall clearance fit of dynamic balance dish, and labyrinth ring 3 is fixed to be set up on the end cover 7 of motor, adds labyrinth ring 3 and does not influence the whole dynamic balance's of adjustment motor process, adds labyrinth ring 3 and has improved the protective capacities of motor.
Furthermore, in the second step, the dynamic balance adjusting device of the motor in the second embodiment may be installed at the shaft extension end of the motor shaft, and the other steps are the same as the above steps.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides a motor dynamic balance adjusting device which characterized in that: the motor shaft balancing device comprises a dynamic balancing disc and a plurality of balancing bodies, wherein the dynamic balancing disc is a circular dynamic balancing disc, the dynamic balancing disc is used for fixedly sleeving an axial extension end of a motor shaft, each balancing body is used for fixedly arranging on different positions of the end face of the dynamic balancing disc, and the dynamic balance of the motor is adjusted by adjusting the positions and the number of the balancing bodies on the dynamic balancing disc.
2. The motor dynamic balance adjustment device according to claim 1, characterized in that: the inner hole of the dynamic balance disc is a threaded hole, and the dynamic balance disc is connected to the shaft extension end of the motor shaft in a threaded mode.
3. The motor dynamic balance adjustment device according to claim 1, characterized in that: a plurality of first threaded holes are uniformly formed in the end face of the dynamic balance disc, threads are arranged on the balance body, and the balance body is in threaded connection with the first threaded holes.
4. The motor dynamic balance adjustment device according to claim 3, characterized in that: the first threaded hole is a blind hole.
5. The motor dynamic balance adjustment device according to claim 3, characterized in that: the balancing body is a screw.
6. The motor dynamic balance adjustment device according to claim 3, characterized in that: the number of the first threaded holes is 8-12, and the first threaded holes are M4 threaded holes.
7. A motor dynamic balance adjusting method is characterized in that: the method comprises the following steps:
step 1: carrying out rotor dynamic balance adjustment on the rotor;
step 2: fixedly sleeving the dynamic balance adjusting device of the motor as claimed in any one of claims 1 to 6 on the shaft extension end of the motor shaft, wherein one end face of the dynamic balance disc, which is not provided with the balance body, is pressed against a bearing in the motor;
and step 3: the dynamic balance of the motor is adjusted by adjusting the positions and the number of the balancing bodies on the dynamic balance disc.
8. The motor dynamic balance adjustment method according to claim 7, characterized in that: the step 2 further comprises: drilling a plurality of second threaded holes in a gear encoder of the motor shaft, wherein the second threaded holes are used for installing the screws;
the step 3 further comprises: the dynamic balance of the motor is adjusted by adjusting the position and the number of the screws on the gear.
9. The motor dynamic balance adjustment method according to claim 7, characterized in that: and step 2, sleeving a labyrinth ring on the outer wall of the dynamic balance ring, wherein the labyrinth ring is in clearance fit with the outer wall of the dynamic balance disc, and the labyrinth ring is fixedly arranged on the front end cover of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911180333.6A CN111463957A (en) | 2019-11-27 | 2019-11-27 | Motor dynamic balance adjusting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911180333.6A CN111463957A (en) | 2019-11-27 | 2019-11-27 | Motor dynamic balance adjusting device and method |
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| Publication Number | Publication Date |
|---|---|
| CN111463957A true CN111463957A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911180333.6A Pending CN111463957A (en) | 2019-11-27 | 2019-11-27 | Motor dynamic balance adjusting device and method |
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| CN (1) | CN111463957A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5235228A (en) * | 1990-02-27 | 1993-08-10 | Fanuc Ltd. | Motor balancing structure |
| CN105429403A (en) * | 2015-11-30 | 2016-03-23 | 天津市松正电动汽车技术股份有限公司 | Motor rotor dynamic balance structure and rotor dynamic balance adjusting method |
| CN106537738A (en) * | 2014-08-04 | 2017-03-22 | 大众汽车有限公司 | Method for reducing or eliminating imbalances of electrical machines |
| CN207939332U (en) * | 2018-03-21 | 2018-10-02 | 深圳派赛科技有限公司 | A kind of filled type exacerbation dynamic balancing motor rotor |
-
2019
- 2019-11-27 CN CN201911180333.6A patent/CN111463957A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5235228A (en) * | 1990-02-27 | 1993-08-10 | Fanuc Ltd. | Motor balancing structure |
| CN106537738A (en) * | 2014-08-04 | 2017-03-22 | 大众汽车有限公司 | Method for reducing or eliminating imbalances of electrical machines |
| CN105429403A (en) * | 2015-11-30 | 2016-03-23 | 天津市松正电动汽车技术股份有限公司 | Motor rotor dynamic balance structure and rotor dynamic balance adjusting method |
| CN207939332U (en) * | 2018-03-21 | 2018-10-02 | 深圳派赛科技有限公司 | A kind of filled type exacerbation dynamic balancing motor rotor |
Non-Patent Citations (2)
| Title |
|---|
| 成大先等主编: "《机械设计图册》", 31 December 1997, 化学工业出版社 * |
| 黄晓荣，马雪洁主编: "《机械工程设计基础》", 30 September 2007, 大象出版社 * |
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Application publication date: 20200728 |