CN106918416A - Motor cogging torque measurement apparatus - Google Patents
Motor cogging torque measurement apparatus Download PDFInfo
- Publication number
- CN106918416A CN106918416A CN201510988215.3A CN201510988215A CN106918416A CN 106918416 A CN106918416 A CN 106918416A CN 201510988215 A CN201510988215 A CN 201510988215A CN 106918416 A CN106918416 A CN 106918416A
- Authority
- CN
- China
- Prior art keywords
- pole
- stator
- rotor
- motor
- cogging torque
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 22
- 238000005303 weighing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- G01L5/0061—Force sensors associated with industrial machines or actuators
Abstract
The present invention relates to machine field, specifically a kind of motor cogging torque measurement apparatus, including support frame, balancing pole, pole and electronic scale, support frame as described above is provided with stator support plate and rotor support shield, motor stator two ends are installed in rotation on different stator support plates respectively, rotor axis of electric two ends are installed in rotation on different rotor support shields respectively, the balancing pole middle part is fixed on the end of rotor axis of electric, the balancing pole two ends are respectively perpendicular fixes a pole, electronic scale is arranged on support frame as described above, the pole lower end of the balancing pole either end abuts with the electronic scale, the balancing pole is in horizontality in measurement.Present invention cogging torque easy to operate and can be to stator and rotor in different relative positions is accurately measured.
Description
Technical field
The present invention relates to machine field, specifically a kind of motor cogging torque measurement apparatus.
Background technology
For some motors, such as permagnetic synchronous motor, due to being provided with motor stator
Groove for placing coil, so as to cause injustice of the stator and rotor air gap on motor circumferencial direction
, and then when rotor rotates, rotor shaft end generates location torque, the location torque also known as
Cogging torque, its size has a significant impact to the control accuracy of motor, therefore in the research and development of motor
The cogging torque of motor must accurately be measured with the fabrication stage.Traditional motor teeth groove
Torque simple measurement method uses spring tension meter method and counterweight method mostly, using spring tension meter
When method is measured, a pole is fixed in rotor shaft end, draws pole to drive with spring tension meter and turns
Son rotation, must remain that spring tension meter is vertical with pole in this course, read and draw
The numerical value of power meter is multiplied by the brachium of pole half as cogging torque, and the method operates and be more stranded
It is difficult；When being measured using counterweight method, motor shaft end fixes a pole, keeps pole level,
Pole one end hangs counterweight from above, and until axis of rotation, the quality of counterweight is multiplied by the brachium of pole half and is
The value of cogging torque, the teeth groove that this kind of method is difficult to stator and rotor in different relative positions turns
Square is accurately measured.
The content of the invention
It is an object of the invention to provide a kind of motor cogging torque measurement apparatus, it is easy to operate and
Cogging torque that can be to stator and rotor in different relative positions is accurately measured.
The purpose of the present invention is achieved through the following technical solutions：
A kind of motor cogging torque measurement apparatus, including support frame, balancing pole, pole and electronics
Claim, support frame as described above is provided with stator support plate and rotor support shield, and motor stator two ends can turn respectively
It is arranged on different stator support plates dynamicly, rotor axis of electric two ends are installed in rotation on respectively
On different rotor support shields, the balancing pole middle part is fixed on the end of rotor axis of electric, described
Balancing pole two ends are respectively perpendicular fixes a pole, and electronic scale is arranged on support frame as described above, institute
The pole lower end for stating balancing pole either end abuts with the electronic scale, and the balancing pole is in measurement
In horizontality.
Support frame as described above includes base plate, stator support plate and rotor support shield, two of which stator support plate
It is arranged on the base plate, a rotor support shield, electronics is equipped with the outside of each stator support plate
Title is arranged on the base plate of support frame.
The free end of the stator support plate is provided with stator spring bearing, the freedom of the rotor support shield
End is provided with rotor supports bearing.
The stator spring bearing and rotor supports bearing are concentric with rotor axis of electric.
The balancing pole middle part is fixed on the end that motor is provided with the rotor axis of electric of encoder side
Portion.
During measurement, on the balancing pole, set directly over the pole offseted with the electronic scale
There is a balancing weight.
Advantages of the present invention is with good effect：
1st, the present invention it is easy to operate and can be to stator and rotor in different relative positions teeth groove
Torque is accurately measured, it can thus be concluded that arriving cogging torque amplitude.
2nd, support frame of the invention supports motor stator by stator support plate, by rotor support shield
Supporting motor rotor axle, and stator spring bearing and rotor supports bearing are same with rotor axis of electric
The heart, so just causes that phase will not be produced between motor stator and rotor axis of electric on gravity direction
Interreaction force, it is ensured that measurement is accurate.
3rd, it is of the invention by placing balancing weight on balancing pole, no matter making balancing pole motor positive and negative
Turn keep level, and the pole of balance bar ends is always ensured that and contacted with electronic scale, enters
One step ensures the accuracy of measurement.
Brief description of the drawings
Fig. 1 is front view of the invention,
Fig. 2 is side view of the invention in Fig. 1.
Wherein, 1 is base plate, and 2 is electronic scale, and 3 is pole, and 4 is balancing pole, and 5 is motor
Armature spindle, 6 is rotor supports bearing, and 7 is stator spring bearing, and 8 is rotor support shield, and 9 are
Stator support plate, 10 is motor stator, and 11 is balancing weight.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Fig. 1~2, the present invention includes support frame, balancing pole 4, pole 3 and electronics
Claim 2, wherein motor to be detected is placed on support frame, support frame as described above include base plate 1,
Stator support plate 9 and rotor support shield 8, two of which stator support plate 9 are arranged on the base plate 1,
The two ends axle portion of motor stator 10 of the motor is supported by different stator support plates 9 respectively,
It is provided with for determining of supporting the motor stator 10 to rotate in the free end of the stator support plate 9
Sub- spring bearing 7, a rotor support shield 8, institute are equipped with the outside of each stator support plate 9
The two ends of rotor axis of electric 5 for stating motor are supported by different rotor support shields 8 respectively, in institute
State rotor support shield 8 free end be provided with for support the rotor axis of electric 5 rotate rotor branch
Support bearing 6, the stator spring bearing 7 and rotor supports bearing 6 with rotor axis of electric 5
With one heart, so just so that between motor stator 10 and rotor axis of electric 5 on gravity direction not
Interaction force can be produced.
As shown in Fig. 1~2, the middle part of the balancing pole 4 is fixed on motor and is provided with encoder side
Rotor axis of electric 5 end, be respectively perpendicular at the two ends of the balancing pole 4 and fix a pole
3, two poles 3 are identical in quality, and electronic scale 2 is arranged on the base plate 1 of support frame, and described
The lower end of pole 3 of the one end of balancing pole 4 abuts with the electronic scale 2, needs to adjust electronics if necessary
Claim 2 height to ensure the level of balancing pole 4, no matter in addition to ensure motor positive and inverse, it is described flat
Weighing apparatus bar 4 remains level and pole 3 contacts with electronic scale 2 all the time, on balancing pole 4,
A balancing weight 11 is arranged above in the pole 3 offseted with the electronic scale 2.The electricity
Son claims 2 to be known in the art technology.
Operation principle of the invention is：
As shown in Fig. 1~2, during measurement, the motor stator 10 and rotor of measured motor will be treated
Axle 5 is erected by the stator support plate 9 and rotor support shield 8 on support frame respectively, with screw by two
Balancing pole 4 of the side with pole 3 is fixed on the rotor axis of electric 5 that motor is provided with encoder side
End, and the pole 3 of the one end of balancing pole 4 is pressed on electronic scale 2, adjust electronic scale 2
Height to ensure the level of balancing pole 4, electronic scale 2 is returned to zero, then with electronic scale 2
A balancing weight 11 is placed in the top of pole 3 of abutting, records the registration M of now electronic scale 2,
The level of balancing pole 4 and slow rotary electric machine stator 10 toward the direction are kept, one is often turned over
Individual equal angular record primary electron claims 2 registration F, then every turn of cogging torque Tcog once
Computing formula be：
Tcog=L × (F-M)
Wherein as shown in Fig. 2 L is in motor center line to the pole 3 abutted with electronic scale 2
The distance of heart line.Every turn of motor stator 10 is once calculated a cogging torque, motor
After stator 10 rotates a circle, the maximum of the cogging torque for being recorded and the difference of minimum value are
The amplitude of cogging torque.
The both sides of balancing pole of the invention 4 are equipped with pole 3, and two poles 3 are used equally to measurement,
During measurement, electronic scale 2 can be arranged at the lower section of any pole 3 according to actual needs, and will match somebody with somebody
Pouring weight 11 is placed on the top of pole 3 abutted with electronic scale 2.
Claims (6)
1. a kind of motor cogging torque measurement apparatus, it is characterised in that：Including support frame, put down
Weighing apparatus bar (4), pole (3) and electronic scale (2), support frame as described above are provided with stator support plate (9)
With rotor support shield (8), motor stator (10) two ends are installed in rotation on respectively different determines
On sub- support plate (9), rotor axis of electric (5) two ends are installed in rotation on different turning respectively
On sub- support plate (8), balancing pole (4) middle part is fixed on the end of rotor axis of electric (5)
Portion, balancing pole (4) two ends are respectively perpendicular fixes a pole (3), electronic scale (2)
It is arranged on support frame as described above, pole (3) lower end of balancing pole (4) either end and institute
Electronic scale (2) abutting is stated, the balancing pole (4) is in horizontality in measurement.
2. motor cogging torque measurement apparatus according to claim 1, it is characterised in that：
Support frame as described above includes base plate (1), stator support plate (9) and rotor support shield (8), wherein two
Individual stator support plate (9) is arranged on the base plate (1), outside each stator support plate (9)
Side is equipped with a rotor support shield (8), and electronic scale (2) is arranged at the base plate (1) of support frame
On.
3. motor cogging torque measurement apparatus according to claim 1 and 2, its feature
It is：The free end of the stator support plate (9) is provided with stator spring bearing (7), described turn
The free end of sub- support plate (8) is provided with rotor supports bearing (6).
4. motor cogging torque measurement apparatus according to claim 3, it is characterised in that：
The stator spring bearing (7) and rotor supports bearing (6) with rotor axis of electric (5)
With one heart.
5. motor cogging torque measurement apparatus according to claim 1, it is characterised in that：
Balancing pole (4) middle part is fixed on the rotor axis of electric (5) that motor is provided with encoder side
End.
6. motor cogging torque measurement apparatus according to claim 1, it is characterised in that：
During measurement, on the balancing pole (4), in the pole (3) offseted with the electronic scale (2)
Surface is provided with a balancing weight (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988215.3A CN106918416B (en) | 2015-12-24 | 2015-12-24 | Motor tooth space torque measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988215.3A CN106918416B (en) | 2015-12-24 | 2015-12-24 | Motor tooth space torque measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106918416A true CN106918416A (en) | 2017-07-04 |
| CN106918416B CN106918416B (en) | 2024-01-30 |
Family
ID=59456684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510988215.3A Active CN106918416B (en) | 2015-12-24 | 2015-12-24 | Motor tooth space torque measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106918416B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116026275A (en) * | 2023-02-27 | 2023-04-28 | 鱼台感创精密机械有限公司 | Accurate detection device of axial float error of rotor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057108A (en) * | 1990-06-04 | 1991-12-18 | 航空航天工业部第一研究院第十三研究所 | Balance type motor torque tester |
| JPH05149803A (en) * | 1991-11-29 | 1993-06-15 | Canon Inc | Apparatus and method for measuring cogging torque of motor |
| JPH06109565A (en) * | 1992-09-29 | 1994-04-19 | Canon Inc | Apparatus and method for cogging torque of motor |
| JPH06129920A (en) * | 1992-10-14 | 1994-05-13 | Yaskawa Electric Corp | Minute torque measuring instrument |
| CN102322996A (en) * | 2011-06-15 | 2012-01-18 | 武汉理工大学 | Rotary drum device for chassis dynamometer |
| CN104697685A (en) * | 2015-03-21 | 2015-06-10 | 黑龙江科技大学 | Device and method for measuring cogging torque of permanent magnet synchronous motor |
| CN205246255U (en) * | 2015-12-24 | 2016-05-18 | 沈阳高精数控智能技术股份有限公司 | Motor tooth's socket torque measuring device |
-
2015
- 2015-12-24 CN CN201510988215.3A patent/CN106918416B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057108A (en) * | 1990-06-04 | 1991-12-18 | 航空航天工业部第一研究院第十三研究所 | Balance type motor torque tester |
| JPH05149803A (en) * | 1991-11-29 | 1993-06-15 | Canon Inc | Apparatus and method for measuring cogging torque of motor |
| JPH06109565A (en) * | 1992-09-29 | 1994-04-19 | Canon Inc | Apparatus and method for cogging torque of motor |
| JPH06129920A (en) * | 1992-10-14 | 1994-05-13 | Yaskawa Electric Corp | Minute torque measuring instrument |
| CN102322996A (en) * | 2011-06-15 | 2012-01-18 | 武汉理工大学 | Rotary drum device for chassis dynamometer |
| CN104697685A (en) * | 2015-03-21 | 2015-06-10 | 黑龙江科技大学 | Device and method for measuring cogging torque of permanent magnet synchronous motor |
| CN205246255U (en) * | 2015-12-24 | 2016-05-18 | 沈阳高精数控智能技术股份有限公司 | Motor tooth's socket torque measuring device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116026275A (en) * | 2023-02-27 | 2023-04-28 | 鱼台感创精密机械有限公司 | Accurate detection device of axial float error of rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106918416B (en) | 2024-01-30 |
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