CN202256640U - Magnetic declination measurement device - Google Patents
Magnetic declination measurement device Download PDFInfo
- Publication number
- CN202256640U CN202256640U CN2011202846083U CN201120284608U CN202256640U CN 202256640 U CN202256640 U CN 202256640U CN 2011202846083 U CN2011202846083 U CN 2011202846083U CN 201120284608 U CN201120284608 U CN 201120284608U CN 202256640 U CN202256640 U CN 202256640U
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- constriction device
- motor
- measuring axle
- bearing
- lower plate
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Abstract
The utility model discloses a measurement device for a relationship (magnetic declination) between the direction of a magnetic field of a permanent magnet and the shape of the permanent magnet. The device measures a horizontal magnetic flux component and a vertical magnetic flux component of the permanent magnet, and then calculates the magnetic declination and overall magnetic flux of the permanent magnet by taking a two-dimensional Helmholtz coil (3) as a measurement sensor based on a rotating measurement shaft (4), an indexing disc, an indexing switch (5) which is corresponding to the indexing disc, a motor and transmission deceleration system (11). The device is mainly characterized in that: the indexing disc and the indexing switch (5) corresponding to the indexing disc are arranged on the rotating measurement shaft (4); the rotating measurement shaft (4) is arranged between an upper bearing (6) and a lower bearing (7), and then the rotating measurement shaft (4) and the upper and lower bearings (6 and 7) are fixed and connected into a whole by an upper clamping plate (8), a lower clamping plate (9) and a bracket (10); the lower end of the rotating measurement shaft (4) is connected with the motor and transmission deceleration system (11); and the upper end of the rotating measurement shaft (4) is positioned in the center of the two-dimensional Helmholtz coil (3).
Description
Technical field
Native system relates to the measurement mechanism of relation (magnetic declination) between magnetic direction and the permanent magnet profile of permanent magnet.
Technical background
Along with the progress of science, the further popularization of permanent magnet applications scope has had higher requirement to relation between the magnetizing direction of permanent magnet and the permanent magnet profile; For relation (magnetic declination) between the magnetic direction of measuring permanent magnet and the permanent magnet profile, I measure with three-dimensional Helmholtz coils method in the past, owing to the factor that influences measuring accuracy is many; Debugging difficulty is big; The measurement consistance is not ideal, and measuring accuracy is low with respect to this measurement mechanism, and using number of patent application is 200810121769.3; " permanent magnet declination measuring meter and measuring method " method measuring speed is too slow again, can't satisfy the batch process needs.
Summary of the invention
The magnetic declination measurement mechanism is a device of measuring relation (magnetic declination) between magnetic direction and the permanent magnet profile.This measurement mechanism has that cost is low, precision is high, good reproducibility, production are debugged advantage simply and easily.
This measurement mechanism is made up of magnet fixed mount (1), tested magnet (2), Helmholtz coils (3), wheel measuring axle (4), head bearing (6), lower bearing (7), train wheel bridge (8), lower plate (9), support (10), motor and the transmission deceleration system (11) of two dimension, the motor frame (12) that fixed electrical machinery is used; Wheel measuring axle (4) places between head bearing (6) and the lower bearing (7); And head bearing (6) and lower bearing (7) are embedded in respectively in train wheel bridge (8) and the lower plate (9); Train wheel bridge (8) is fixed, is connected as a whole with lower plate (9) with support (10); Motor frame (12) is installed below lower plate (9); Motor and transmission deceleration system (11) are installed on the motor frame (12); And with the lower ends of wheel measuring axle (4), the upper end of wheel measuring axle (4) places the center of the Helmholtz coils (3) of two dimension, the Helmholtz coils (3) of two dimension is fixed on the train wheel bridge (8).
As preferably, include " index plate " and and " index plate " corresponding " calibration switch " (5) on the wheel measuring axle (4).
As improvement; The propelling constriction device train wheel bridge (15) that increases motor cover (13), linear advancement constriction device (14) and adorn for fixing linear advancement constriction device (14), advance to press from both sides under the constriction device and pull (16) and propelling constriction device fixed mount (17); Motor cover (13) covers motor and transmission deceleration system (11) and links to each other with lower plate (9); Linear advancement constriction device (14) links to each other with motor cover (13), and upper bracket (10) links to each other with advancing constriction device train wheel bridge (15), becomes the magnetic declination measurement mechanism that machinery extracts; At this moment; Head bearing (6) adopts and had both allowed wheel measuring axle (4) tangential movement, the deep trench that allows wheel measuring axle (4) to move up and down again not to have interior cover bearing, and lower plate (9) can slide up and down on support (10).
As further improvement; The motor frame (12) that the magnetic declination measurement mechanism is used by magnet fixed mount (1), tested magnet (2), Helmholtz coils (3), wheel measuring axle (4), head bearing (6), lower bearing (7), train wheel bridge (8), lower plate (9), support (10), stepper motor, the fixed electrical machinery of two dimension is formed; Wheel measuring axle (4) places between head bearing (6) and the lower bearing (7); And head bearing (6) and lower bearing (7) are embedded in respectively in train wheel bridge (8) and the lower plate (9); Train wheel bridge (8) is fixed, is connected as a whole with lower plate (9) with support (10); Motor frame (12) is installed below lower plate (9), and stepper motor is installed on the motor frame (12), and with the lower ends of wheel measuring axle (4); The upper end of wheel measuring axle (4) places the center of the Helmholtz coils (3) of two dimension, and the Helmholtz coils (3) of two dimension is fixed on the train wheel bridge (8).
As further improvement, include " index plate " and and " index plate " corresponding " calibration switch " (5) on the wheel measuring axle (4).
As further improvement; The propelling constriction device train wheel bridge (15) that increases motor cover (13), linear advancement constriction device (14) and adorn for fixing linear advancement constriction device (14), advance to press from both sides under the constriction device and pull (16) and propelling constriction device fixed mount (17); Motor cover (13) covers stepper motor and links to each other with lower plate (9); Linear advancement constriction device (14) links to each other with motor cover (13), and upper bracket (10) links to each other with advancing constriction device train wheel bridge (15), becomes the magnetic declination measurement mechanism that machinery extracts; At this moment; Head bearing (6) adopts and had both allowed wheel measuring axle (4) tangential movement, the deep trench that allows wheel measuring axle (4) to move up and down again not to have interior cover bearing, and lower plate (9) can slide up and down on support (10).
" index plate " mentioned in content of the present invention and claims, actual is a chain wheel relevant with the position angle, and " calibration switch " actual be an inductive switch.In the time of stepper motor or motor and transmission deceleration system (11) driven in rotation measurement axis (4), also driven index plate, after the index plate revolution is crossed certain angle, will trigger the calibration switch and make measuring system be able to perception.Like Fig. 4 is the index plate synoptic diagram, and the index plate center pit is used to install the wheel measuring axle, and the index plate outer is a gear-like.On limit, dentation outer calibration switch (1) is installed.
Description of drawings
Fig. 1 is the synoptic diagram of the angle (magnetic declination) between the vertical line of true field central shaft and magnet profile reference surface of magnet
Fig. 2 is two-dimentional Helmholtz coils instrumentation plan
Fig. 3 is horizontal Helmholtz coils axis and the coil plane synoptic diagram when not parallel
Fig. 4 is index plate and calibration switch synoptic diagram
Synoptic diagram when Fig. 5 is vertical Helmholtz coils axis and coil plane out of plumb
Fig. 6 does not have interior cover bearing for deep trench
Instance master drawing when Fig. 7 is manual the extraction
Instance master drawing when Fig. 8 is the machinery extraction
Embodiment
Like Fig. 7 is the manual instance appearance of extracting
The Helmholtz coils (3) of two dimension among the figure, the one dimension Helmholtz coils is measured the magnetic flux on the horizontal direction, the magnetic flux on another dimension Helmholtz coils measuring vertical direction.Magnet fixed mount (1) is to prevent that magnet moves and establishes in the rotary course, when magnet self is enough heavy, when in rotary course, being unlikely to move, this fixed mount can be installed.Tested magnet (2) is placed in the top of wheel measuring axle (4).Require the axis of wheel measuring axle (4) higher verticality to be arranged with the end face of laying magnet.Index plate reaches with the corresponding calibration switch of index plate (5) and is installed on the wheel measuring axle (4), and purpose is to improve measuring accuracy.Head bearing (6), lower bearing (7) are used for alleviating resistance and the swing of wheel measuring axle (4) at rotary course.Train wheel bridge (8), lower plate (9) and support (10) are used for fixing wheel measuring axle (4), and make wheel measuring axle (4), Helmholtz coils (3) keep relatively-stationary position.Stepper motor or motor and transmission deceleration system (11) are used for driven rotary measurement axis (4) rotation and reduce rotational speed.Motor frame (12) is used for fixing motor and transmission deceleration system (11).
In the above-mentioned member, except that motor, all use non-magnet material.If under the not high situation of measurement requirement, partial component can be used low permeability magnetic material, even permeability magnetic material certainly.
The course of work is following:
Tested magnet (2) is placed on the central point of wheel measuring axle (4) upper surface; The axis direction of magnetizing direction and wheel measuring axle (4) is consistent basically; Start stepper motor or motor and transmission deceleration system (11), under the driving of stepper motor or motor and transmission deceleration system (11), the tested magnet (2) of wheel measuring axle (4) and upper end thereof rotates in the horizontal direction; Revolution moves an angle; Measure electronic circuit through perception calibration switch (5), the magnetic flux value on the horizontal direction under this position angle of recording level Helmholtz coils (3), measure a week after; Stepper motor or motor and transmission deceleration system (11) stall; Extract magnet by hand, electronic circuit records the magnetic flux on the vertical direction through vertical Helmholtz coils (3), last magnetic declination and the total magnetic flux of electronic circuit through calculating this tested magnet.
Like Fig. 8 is the instance appearance that machinery extracts, and this routine cathetus advances constriction device (14) to realize with cylinder, and with the cylinder core regain, extraction operation.
Basic and manual extract the same of the first half of Fig. 8, different is head bearing (6), not only allows wheel measuring axle (4) to horizontally rotate, and also allows wheel measuring axle (4) to twitch up and down.What another were different is that lower plate (9) is not to be fixed on the support (10), but on support (10), can slide up and down.Linear advancement constriction device (14) is realized with cylinder.Advance constriction device train wheel bridge (15), advance to press from both sides under the constriction device and pull (16) and advance constriction device fixed mount (17) to be used for fixing the linear advancement constriction device.Movable part in the linear advancement constriction device (14) (this instance appearance is the cylinder core, hereinafter to be referred as " cylinder core ") links to each other with motor cover (13), and motor cover (13) links to each other with lower plate (9) again.
The course of work is following:
The cylinder core ejects wheel measuring axle (4) earlier; Make the upper surface of wheel measuring axle (4) place Helmholtz to measure the outside of coil (3), tested magnet (2) is placed on the central point of wheel measuring axle (4) upper surface, the axis direction of magnetizing direction and wheel measuring axle (4) is consistent basically; Fixing tested magnet (2) with magnet fixed mount (1) (extracts owing to usefulness is mechanical in this example; Necessary with magnet fixed mount (1)), start cylinder, the cylinder core is moved downward; Enter into Helmholtz coils (3) up to tested magnet (2), write down the vertical component value of the magnetic flux of this magnet.After the cylinder core is regained; Start stepper motor or motor and transmission deceleration system (11), stepper motor or motor and transmission deceleration system (11) are rotated through driven in rotation measurement axis (4) in the horizontal direction, and revolution moves an angle; Measure electronic circuit through perception calibration switch (5); Magnetic flux value on the horizontal direction under this position angle of recording level Helmholtz coils (3), measure a week after, stepper motor or motor and transmission deceleration system (11) stall; The cylinder core ejects wheel measuring axle (4), measures tested magnet (2) simultaneously and ejects the vertical flux component under the situation at wheel measuring axle (4).Tested magnet (2) is under the effect of cylinder core and wheel measuring axle (4); Carried out withdrawal, rotated, ejected; These motions are gone up at level and vertical Helmholtz coils (3) and are produced induction electromotive force; And, finally draw the magnetic declination and the total magnetic flux of this tested magnet through electronic circuit integration, computing.
Claims (10)
1. magnetic declination measurement mechanism; It is characterized in that forming by magnet fixed mount (1), tested magnet (2), Helmholtz coils (3), wheel measuring axle (4), head bearing (6), lower bearing (7), train wheel bridge (8), lower plate (9), support (10), motor and the transmission deceleration system (11) of two dimension, the motor frame (12) that fixed electrical machinery is used; Wheel measuring axle (4) places between head bearing (6) and the lower bearing (7); And head bearing (6) and lower bearing (7) are embedded in respectively in train wheel bridge (8) and the lower plate (9); Train wheel bridge (8) is fixed, is connected as a whole with lower plate (9) with support (10); Motor frame (12) is installed below lower plate (9), and motor and transmission deceleration system (11) are installed on the motor frame (12), and with the lower ends of wheel measuring axle (4); The upper end of wheel measuring axle (4) places the center of the Helmholtz coils (3) of two dimension, and the Helmholtz coils (3) of two dimension is fixed on the train wheel bridge (8).
2. magnetic declination measurement mechanism according to claim 1 is characterized in that including on the wheel measuring axle (4) " index plate " and and " index plate " corresponding " calibration switch " (5).
3. magnetic declination measurement mechanism according to claim 1 and 2; The propelling constriction device train wheel bridge (15) that it is characterized in that increasing motor cover (13), linear advancement constriction device (14) and adorn for fixing linear advancement constriction device (14), advance constriction device down folder pull (16) and propelling constriction device fixed mount (17); Motor cover (13) covers motor and transmission deceleration system (11) and links to each other with lower plate (9); Linear advancement constriction device (14) links to each other with motor cover (13), and upper bracket (10) links to each other with advancing constriction device train wheel bridge (15).
4. magnetic declination measurement mechanism according to claim 3 is characterized in that head bearing (6) employing had both allowed wheel measuring axle (4) tangential movement, the deep trench that allows wheel measuring axle (4) to move up and down again not to have interior cover bearing.
5. magnetic declination measurement mechanism according to claim 4 is characterized in that lower plate (9), can on support (10), slide up and down.
6. magnetic declination measurement mechanism; It is characterized in that forming by the motor frame (12) that magnet fixed mount (1), tested magnet (2), Helmholtz coils (3), wheel measuring axle (4), head bearing (6), lower bearing (7), train wheel bridge (8), lower plate (9), support (10), stepper motor, the fixed electrical machinery of two dimension are used; Wheel measuring axle (4) places between head bearing (6) and the lower bearing (7); And head bearing (6) and lower bearing (7) are embedded in respectively in train wheel bridge (8) and the lower plate (9); Train wheel bridge (8) is fixed, is connected as a whole with lower plate (9) with support (10); Motor frame (12) is installed below lower plate (9), and stepper motor is installed on the motor frame (12), and with the lower ends of wheel measuring axle (4); The upper end of wheel measuring axle (4) places the center of the Helmholtz coils (3) of two dimension, and the Helmholtz coils (3) of two dimension is fixed on the train wheel bridge (8).
7. magnetic declination measurement mechanism according to claim 6 is characterized in that including on the wheel measuring axle (4) " index plate " and and " index plate " corresponding " calibration switch " (5).
8. according to claim 6 or 7 described magnetic declination measurement mechanisms; The propelling constriction device train wheel bridge (15) that it is characterized in that increasing motor cover (13), linear advancement constriction device (14) and adorn for fixing linear advancement constriction device (14), advance constriction device down folder pull (16) and propelling constriction device fixed mount (17); Motor cover (13) covers stepper motor and links to each other with lower plate (9); Linear advancement constriction device (14) links to each other with motor cover (13), and upper bracket (10) links to each other with advancing constriction device train wheel bridge (15).
9. magnetic declination measurement mechanism according to claim 8 is characterized in that head bearing (6) employing had both allowed wheel measuring axle (4) tangential movement, the deep trench that allows wheel measuring axle (4) to move up and down again not to have interior cover bearing.
10. magnetic declination measurement mechanism according to claim 9 is characterized in that lower plate (9), can on support (10), slide up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202846083U CN202256640U (en) | 2011-08-05 | 2011-08-05 | Magnetic declination measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202846083U CN202256640U (en) | 2011-08-05 | 2011-08-05 | Magnetic declination measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256640U true CN202256640U (en) | 2012-05-30 |
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ID=46117859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202846083U Expired - Fee Related CN202256640U (en) | 2011-08-05 | 2011-08-05 | Magnetic declination measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256640U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412267A (en) * | 2013-08-20 | 2013-11-27 | 黄可可 | Method and device for measuring magnetic declination of tile-shaped magnet element |
| CN104020426A (en) * | 2014-05-23 | 2014-09-03 | 宁波兴隆磁性技术有限公司 | Method for measuring flux of magnetic element and device thereof |
| CN107422286A (en) * | 2017-08-22 | 2017-12-01 | 深圳市东升磁业有限公司 | Magnetic declination measurement device and method |
-
2011
- 2011-08-05 CN CN2011202846083U patent/CN202256640U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412267A (en) * | 2013-08-20 | 2013-11-27 | 黄可可 | Method and device for measuring magnetic declination of tile-shaped magnet element |
| CN103412267B (en) * | 2013-08-20 | 2015-11-18 | 黄可可 | For measuring the method and apparatus of the magnetic declination of tile magnetic element |
| CN104020426A (en) * | 2014-05-23 | 2014-09-03 | 宁波兴隆磁性技术有限公司 | Method for measuring flux of magnetic element and device thereof |
| CN107422286A (en) * | 2017-08-22 | 2017-12-01 | 深圳市东升磁业有限公司 | Magnetic declination measurement device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130805 |