CN112393833B - Measuring device and measuring method for measuring unbalanced magnetic tension of limited-angle motor - Google Patents
Measuring device and measuring method for measuring unbalanced magnetic tension of limited-angle motor Download PDFInfo
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- CN112393833B CN112393833B CN202011248430.7A CN202011248430A CN112393833B CN 112393833 B CN112393833 B CN 112393833B CN 202011248430 A CN202011248430 A CN 202011248430A CN 112393833 B CN112393833 B CN 112393833B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
The invention relates to a measuring device and a measuring method for measuring unbalanced magnetic tension of a limited angle motor, which are characterized in that: the stator shell is fixed at the mounting hole of the vertical support frame; the positioning block is embedded in an outer ring groove of the stator shell along the circumference, the positioning block and the positioning shell are positioned and matched through a pin, and the stator core is embedded in an inner cavity of the positioning block to form a stator part; an inner ring shaft at the center of the stator shell is contacted with an inner ring of the bearing to form a shaft system; the outer ring of the bearing is tightly matched with the inner circle of the shaft sleeve, the outer circle of the shaft sleeve is fixedly connected with the inner wall of the magnetic steel and jointly wrapped in the magnetic steel cover to form a rotor part; a locking nut is coaxially sleeved on the inner ring shaft outside the bearing and connected with the threaded end of the inner ring shaft, so that the axial locking of the device measuring device is realized; the outer ring of the measuring disc is provided with a rope winding groove, and the side wall of the rope winding groove is provided with a rope threading hole. The invention can accurately position the position of the unbalanced magnetic pulling force of the motor and quantitatively test the magnitude of the unbalanced magnetic pulling force.
Description
Technical Field
The invention belongs to the technical field of brushless torque motor measurement, and particularly relates to a device and a method for measuring unbalanced magnetic pull of a limited-angle motor.
Background
The magnetic pull force is generated between the air gaps of the stator and the rotor of the motor. When the air-gap magnetic field is uniformly distributed, all points of the rotor are stressed in a balanced manner, and the resultant force is zero. Due to electromagnetic induction or mechanical installation, uneven force is applied to each radial point of the rotor, and unbalanced magnetic tension is generated at the moment. The unbalanced magnetic pull force can greatly affect the overall performance of the motor, so that the system generates noise and vibration, the bearing abrasion is accelerated, the life cycle of the motor is shortened, and the like. The important performance indexes of the motor are directly influenced, such as static friction torque, starting voltage and other indexes are reduced, and the survival rate of the motor is lower.
Therefore, it is necessary to accurately detect the uniformity of the air gap between the stator and the rotor of the motor when the motor is produced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides the measuring device and the measuring method for measuring the unbalanced magnetic tension of the limited-angle motor, and can find and improve the problem of uneven magnetic tension of the motor in the batch production process so as to improve the batch production efficiency of the motor.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a measure measuring device of limited angle motor unbalance magnetic pull which characterized in that: the device comprises a vertical supporting frame, a stator shell, a positioning block, a stator core, a bearing, magnetic steel, a shaft sleeve, a magnetic steel cover, a locking nut, a measuring shaft, a measuring disc, a hanging rope, a quantitative measuring block and a guide sleeve;
the vertical support frame is provided with a mounting hole in the horizontal direction;
the stator shell is fixed at the mounting hole of the vertical support frame through a screw; the positioning block is embedded in an outer ring groove of the stator shell along the circumferential direction and is in contact with an outer ring surface of the outer ring groove, the positioning block and the positioning shell are in positioning fit through a pin, and the stator core is embedded in an inner cavity of the positioning block to form a stator part of the measuring device;
an inner ring shaft at the center of the stator shell is contacted with an inner ring of the bearing to form a shaft system of the measuring device;
the outer ring of the bearing is tightly matched with the inner circle of the shaft sleeve, the outer circle of the shaft sleeve is fixedly connected with the inner wall of the magnetic steel and jointly wrapped in the magnetic steel cover to form a rotor part of the measuring device;
a locking nut is coaxially sleeved on the inner ring shaft outside the bearing and connected with the threaded end of the inner ring shaft to realize axial locking of the measuring device;
the outer ring of the measuring disc is provided with a rope winding groove, and the side wall of the rope winding groove is provided with a rope threading hole;
when measurement operation is carried out, the inner end of the measuring shaft is coaxially and fixedly connected with the outer end of the shaft sleeve, the measuring disc is coaxially and fixedly connected with the outer end of the measuring shaft, the hanging rope is wound in the rope winding groove, one end of the hanging rope penetrates through the rope penetrating hole to be fixed, the other end of the hanging rope forms a drooping hanging end, and the quantitative measuring block is connected to the drooping hanging end of the hanging rope and used for realizing quantitative measurement of unbalanced magnetic tension;
when the stator part is disassembled and adjusted, the inner wall of the guide sleeve is in coaxial fit contact with the outer wall of the magnetic steel cover, so that a disassembling and positioning space is formed between the outer wall surface of the guide sleeve and the outer ring surface of the outer ring groove of the stator shell.
Further: the quantitative measurement block adopts a weight.
Further: the vertical support is formed by fixedly connecting a bottom plate and a vertical plate through screws, and the mounting holes are formed in the vertical plate.
Further: the guide sleeve is made of brass materials.
A measuring method for measuring unbalanced magnetic tension of a limited angle motor is characterized by comprising the following steps: based on above-mentioned measuring device, include the following step:
step 1, completing the assembly and debugging of a measuring device;
step 2, rotating the measuring disc along the circumferential direction, applying a steering force to the measuring disc, transmitting power to the measuring shaft by the measuring disc, driving the rotor part to rotate by the measuring shaft, preliminarily judging whether unbalanced magnetic tension exists or not according to the smooth condition of the rotation of the rotor part, and judging that the unbalanced magnetic tension does not exist if the rotor part does not rotate smoothly after rotating for a whole circle; if the obvious phenomenon of unsmooth rotation occurs in the rotation process, a large magnetic tension point, namely an unbalanced magnetic tension point, occurs at the position;
step 3, after unbalanced magnetic tension points appear, winding a hanging rope on the measuring disc, hanging a quantitative measuring block, and realizing quantitative detection of the unbalanced magnetic tension value in a mode of hanging the quantitative measuring block;
and 4, detaching the stator part according to the measurement result in the step 3, and adjusting, specifically:
4.1, removing the measuring shaft and the measuring disc;
4.2 installing a guide sleeve to form a guide space for detaching the stator part,
4.3 removing the pin, removing the positioning block and the stator core along the axial direction,
4.3 change stator core or adjust the stator punching position that constitutes stator core, realize the performance detection before the stator shaping.
The invention has the advantages and positive effects that:
1. the invention can quickly detect the rotor part of the motor in the circumferential rotation range and accurately position the position of unbalanced magnetic pull of the motor.
2. After the position of the unbalanced magnetic pulling force of the motor is determined, the measuring block is hung, so that the magnitude of the unbalanced magnetic pulling force can be quickly and quantitatively tested, the operation is simple and convenient, and the method has strong process operability.
3. The device has the advantages of simple structure, convenience for repeated disassembly and assembly, convenience, reliability and contribution to improving the mass production efficiency.
4. The invention can complete the performance screening of the stator punching sheet before the stator is formed, eliminates the parts with poor performance and can effectively improve the survival rate of the motor.
Drawings
FIG. 1 is a schematic view of the present invention in a configuration for performing a measurement operation;
fig. 2 is a schematic structural view of the present invention when the stator portion is disassembled and assembled.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.
The invention relates to a measuring device for measuring unbalanced magnetic tension of a limited angle motor, please refer to fig. 1-2, and the invention points are as follows: the device comprises a vertical supporting frame, a stator shell 2, a positioning block 3, a stator core 4, a bearing 5, magnetic steel 11, a shaft sleeve 10, a magnetic steel cover 6, a locking nut 7, a measuring shaft 9, a measuring disc 8, a hanging rope, a quantitative measuring block and a guide sleeve 13; the quantitative measurement block preferably adopts a weight and has a calibrated weight; the guide sleeve is preferably made of brass material, and has good plasticity and strength. Wherein the lanyard and the quantitative measurement block are not shown in the drawings.
The vertical support frame bottom plate 12 and the vertical plate 1 form a structure, and a mounting hole in the horizontal direction is formed in the vertical support frame bottom plate;
the vertical support frame is preferably formed by fixedly connecting a bottom plate and a vertical plate through screws, and the vertical plate is provided with a mounting hole in the horizontal direction for positioning the position of the stator shell and facilitating the detachment of the stator block from the stator shell.
The stator shell is fixed at the mounting hole of the vertical support frame through a screw; the positioning blocks (generally 4) are embedded in the outer ring groove of the stator shell along the circumferential direction and are in contact with the outer ring surface of the outer ring groove, the positioning blocks are in positioning fit with the positioning shell through pins, and the stator core is embedded in the inner cavity of the positioning blocks to form a stator part of the measuring device, wherein the stator core is formed by laminating thinner stator punching sheets.
An inner ring shaft at the center of the stator shell is in contact with an inner ring of the bearing to form a shaft system of the measuring device, but does not rotate;
the outer lane of bearing and the interior circle fastening cooperation of axle sleeve, the excircle and the magnet steel inner wall fixed connection of axle sleeve wrap up inside the magnet steel cover jointly, constitute this measuring device's rotor part.
And a locking nut is coaxially sleeved on the inner ring shaft outside the bearing and is connected with the threaded end of the inner ring shaft, so that the axial locking of the measuring device is realized.
The outer ring of the measuring disc is provided with a rope winding groove 8.1, and the side wall of the rope winding groove is provided with a rope threading hole.
When the measuring operation is carried out, the inner end of the measuring shaft is coaxially and fixedly connected with the outer end of the shaft sleeve, the measuring disc is coaxially and fixedly connected with the outer end of the measuring shaft, the hanging rope is wound in the rope winding groove, one end of the hanging rope penetrates through the rope penetrating hole to be fixed, the other end of the hanging rope forms a drooping hanging end, and the quantitative measuring block is connected to the drooping hanging end of the hanging rope and used for realizing the quantitative measurement of unbalanced magnetic tension.
When dismouting adjustment stator part, demolish measuring spindle and measuring disk this moment, and install the uide bushing, it is specific: the inner wall of the guide sleeve is in coaxial matching contact with the outer wall of the magnetic steel cover, so that a dismounting and positioning space is formed between the outer wall surface of the guide sleeve and the outer ring surface of the outer ring groove of the stator shell, the stator part is guaranteed to be dismounted smoothly along the axial direction, and the stator part can be mounted accurately and smoothly after being adjusted.
A measuring method for measuring unbalanced magnetic tension of a limited angle motor is based on the measuring device and comprises the following steps:
step 1, completing the assembly and debugging of the measuring device: assembling other structures of the measuring device together except the guide sleeve;
step 2, rotating the measuring disc along the circumferential direction, applying a steering force to the measuring disc, transmitting power to the measuring shaft by the measuring disc, driving the rotor part to rotate by the measuring shaft, preliminarily judging whether unbalanced magnetic tension exists or not according to the smooth condition of the rotation of the rotor part, and judging that the unbalanced magnetic tension does not exist if the rotor part does not rotate smoothly after rotating for a whole circle; if the obvious phenomenon of unsmooth rotation occurs in the rotation process, a large magnetic tension point, namely an unbalanced magnetic tension point, occurs at the position;
step 3, after unbalanced magnetic tension points appear, winding a hanging rope on the measuring disc, hanging a quantitative measuring block, and realizing quantitative detection of the unbalanced magnetic tension value in a mode of hanging the quantitative measuring block; specifically, the quantitative measurement piece can be equipped with the polylith that weight is different, if adopt the weight, need be equipped with the weight of multiple weight, hang the quantitative measurement piece at the vertical end of hanging the rope, the weight of the quantitative measurement piece of adjustment suspension until the measuring pan rotates, surveys the quantitative value of unbalanced magnetic pull.
And 4, detaching the stator part according to the measurement result in the step 3, and adjusting, specifically:
4.1, removing the measuring shaft and the measuring disc;
4.2 installing a guide sleeve to form a guide space for detaching the stator part,
4.3 removing the pin, axially removing the positioning block and the stator core,
4.3 change stator core or adjust the stator punching position that constitutes stator core, realize the performance detection before the stator shaping.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (5)
1. The utility model provides a measure measuring device of limited angle motor unbalance magnetic pull which characterized in that: the device comprises a vertical supporting frame, a stator shell, a positioning block, a stator core, a bearing, magnetic steel, a shaft sleeve, a magnetic steel cover, a locking nut, a measuring shaft, a measuring disc, a hanging rope, a quantitative measuring block and a guide sleeve;
the vertical supporting frame is provided with a mounting hole in the horizontal direction;
the stator shell is fixed at the mounting hole of the vertical support frame through a screw; the positioning block is embedded in the outer ring groove of the stator shell along the circumferential direction and is in contact with the outer ring surface of the outer ring groove, the positioning block is in positioning fit with the positioning shell through a pin, and the stator core is embedded in the inner cavity of the positioning block to form a stator part of the measuring device;
an inner ring shaft at the center of the stator shell is contacted with an inner ring of the bearing to form a shaft system of the measuring device;
the outer ring of the bearing is tightly matched with the inner circle of the shaft sleeve, the outer circle of the shaft sleeve is fixedly connected with the inner wall of the magnetic steel and jointly wrapped in the magnetic steel cover to form a rotor part of the measuring device;
a locking nut is coaxially sleeved on the inner ring shaft outside the bearing and connected with the threaded end of the inner ring shaft to realize axial locking of the measuring device;
the outer ring of the measuring disc is provided with a rope winding groove, and the side wall of the rope winding groove is provided with a rope threading hole;
when measurement operation is carried out, the inner end of the measuring shaft is coaxially and fixedly connected with the outer end of the shaft sleeve, the measuring disc is coaxially and fixedly connected with the outer end of the measuring shaft, the hanging rope is wound in the rope winding groove, one end of the hanging rope penetrates through the rope penetrating hole to be fixed, the other end of the hanging rope forms a drooping hanging end, and the quantitative measuring block is connected to the drooping hanging end of the hanging rope and used for realizing quantitative measurement of unbalanced magnetic tension;
when the stator part is disassembled and adjusted, the inner wall of the guide sleeve is in coaxial fit contact with the outer wall of the magnetic steel cover, so that a disassembling and positioning space is formed between the outer wall surface of the guide sleeve and the outer ring surface of the outer ring groove of the stator shell.
2. The apparatus for measuring unbalanced magnetic pull of a limited angle electric motor according to claim 1, wherein: the quantitative measurement block adopts a weight.
3. The apparatus for measuring unbalanced magnetic pull of a limited angle electric motor according to claim 1, wherein: the vertical support is formed by fixedly connecting a bottom plate and a vertical plate through screws, and the mounting holes are formed in the vertical plate.
4. A measuring apparatus for measuring unbalanced magnetic tension of a limited rotation angle motor according to claim 1, wherein: the guide sleeve is made of brass materials.
5. A measuring method for measuring unbalanced magnetic pull of a limited angle motor is characterized by comprising the following steps: a device for measuring unbalanced magnetic pull of a limited angle electric machine according to any of claims 1 to 4, comprising the steps of:
step 1, completing the assembly and mode adjustment of a measuring device;
step 2, rotating the measuring disc along the circumferential direction, applying a steering force to the measuring disc, transmitting power to the measuring shaft by the measuring disc, driving the rotor part to rotate by the measuring shaft, preliminarily judging whether unbalanced magnetic tension exists or not according to the smooth condition of the rotation of the rotor part, and judging that the unbalanced magnetic tension does not exist if the rotor part does not rotate smoothly after rotating for a whole circle; if the obvious phenomenon of unsmooth rotation occurs in the rotation process, a large magnetic tension point, namely an unbalanced magnetic tension point, occurs at the position;
step 3, after the unbalanced magnetic tension point appears, winding a hanging rope on the measuring disc, hanging a quantitative measuring block, and realizing quantitative detection of the value of the unbalanced magnetic tension by hanging the quantitative measuring block;
and 4, detaching the stator part according to the measurement result in the step 3, and adjusting, specifically:
4.1, firstly, dismantling the measuring shaft and the measuring disc;
4.2 installing a guide sleeve to form a guide space for detaching the stator part,
4.3 removing the pin, axially removing the positioning block and the stator core,
4.3 change stator core or adjust the stator punching position that constitutes stator core, realize the performance detection before the stator shaping.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011248430.7A CN112393833B (en) | 2020-11-10 | 2020-11-10 | Measuring device and measuring method for measuring unbalanced magnetic tension of limited-angle motor |
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| CN202011248430.7A CN112393833B (en) | 2020-11-10 | 2020-11-10 | Measuring device and measuring method for measuring unbalanced magnetic tension of limited-angle motor |
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| CN112393833B true CN112393833B (en) | 2023-01-17 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025304A (en) * | 2010-10-29 | 2011-04-20 | 天津大学 | Method for reducing vibration and noise of permanent-magnet motor |
| CN102507120A (en) * | 2011-11-18 | 2012-06-20 | 上海交通大学 | Generator rotor unbalance magnetic tension testing bench supported by sliding bearings |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01178841A (en) * | 1988-01-08 | 1989-07-17 | Kokusai Keisokki Kk | Method for correcting dynamic balance of rotary body |
| CN2275236Y (en) * | 1995-03-31 | 1998-02-25 | 中国人民解放军重庆通信学院 | Torque generator for micro direct current brushless motor performance measurer |
| CN103728078A (en) * | 2014-01-24 | 2014-04-16 | 中国船舶重工集团公司第七0四研究所 | Test motor and method for achieving exciting force measurement of rotor bearing outer ring |
| CN203967916U (en) * | 2014-06-19 | 2014-11-26 | 西安盾安电气有限公司 | The vertical assembling device of a kind of magneto |
| CN107314846B (en) * | 2017-07-11 | 2018-10-26 | 哈尔滨工程大学 | A kind of motor unilateral magnetic force measuring device |
| CN109728657A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of width corner finite angle servo motor |
| CN107707091A (en) * | 2017-11-10 | 2018-02-16 | 贵州航天林泉电机有限公司 | A kind of valve servo limited angle torque motor and method |
| CN108494192A (en) * | 2018-06-09 | 2018-09-04 | 葛素珍 | A kind of assembly tooling of the stator and rotor of Miniature servo-motors |
-
2020
- 2020-11-10 CN CN202011248430.7A patent/CN112393833B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025304A (en) * | 2010-10-29 | 2011-04-20 | 天津大学 | Method for reducing vibration and noise of permanent-magnet motor |
| CN102507120A (en) * | 2011-11-18 | 2012-06-20 | 上海交通大学 | Generator rotor unbalance magnetic tension testing bench supported by sliding bearings |
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