CN111128510A - Magnetizing device for super-strong hybrid stepping motor - Google Patents
Magnetizing device for super-strong hybrid stepping motor Download PDFInfo
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- CN111128510A CN111128510A CN201911387941.4A CN201911387941A CN111128510A CN 111128510 A CN111128510 A CN 111128510A CN 201911387941 A CN201911387941 A CN 201911387941A CN 111128510 A CN111128510 A CN 111128510A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
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Abstract
The invention discloses a magnetizing device of a super-strong hybrid stepping motor, wherein the magnetizing device of a rotor comprises a magnetizing fixture structural part of the rotor, the inner cavity of the magnetizing fixture structural part of the rotor is provided with a first coil placing groove, a second coil placing groove, a third coil placing groove, a first charging coil, a second charging coil, a third coil placing groove, a fourth coil placing groove, a third coil placing groove, a fifth charging coil, a stator core center and a space between an upper group of stator radial magnetizing tooth groove small magnetic strips and a lower group of stator radial magnetizing tooth groove small magnetic strips, the torque characteristics of the rotor and the stator after being magnetized are assembled are greatly improved, and the torque of the stepping motor with the same standard size is doubled, i.e. improved by 100%.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a magnetizing device of a super-strong hybrid stepping motor.
Background
The stepping motor is a core component of an industrial control or motion control system, is second to the AC servo motor in importance, has outstanding advantages in the field of low power and has no alternative dominance. The main stream product of the stepping motor is a two-phase hybrid stepping motor, the technology is mature and industrialized, the structure of the super-strong hybrid stepping motor is almost the same as that of a standard hybrid stepping motor, only high-performance permanent magnet small magnetic strips are embedded in small tooth grooves of a stator and a rotor of the standard hybrid stepping motor, the torque of the stepping motor is doubled under the condition that the material and the cost are not increased much, the super-strong hybrid stepping motor becomes an upgrading and updating product of the stepping motor, and the super-strong hybrid stepping motor has great influence on a motion control system. However, in order to provide a high torque for the super-strong hybrid stepping motor, a small magnetic strip needs to be magnetized, but no good magnetizing device is provided at present, and the required magnetic quantity can be charged for the stator and the rotor of the super-strong hybrid stepping motor, so that the super-strong hybrid stepping motor meets the requirement of mass production of the super-strong hybrid stepping motor.
Disclosure of Invention
Based on the defects of the prior art, the invention aims to provide a magnetizing device of a super-strong hybrid stepping motor.
The technical scheme of the invention is as follows:
the utility model provides a super strong type hybrid stepping motor's rotor subassembly anchor clamps that magnetize which characterized in that: including the rotor anchor clamps structure that magnetizes that magnetic permeability is greater than or equal to 1, the inner chamber of rotor anchor clamps structure that magnetizes is used for setting up the rotor that needs magnetize, and wherein, the middle part of rotor is provided with rotor axial permanent magnet magnetic ring, and the circumference that lies in the both sides of rotor axial permanent magnet magnetic ring on the rotor respectively is provided with a plurality of vertical and perpendicular to rotor axial permanent magnet magnetic ring's interval arrangement, along the radial magnetized little magnetic stripe of rotor tooth's socket, the inner chamber of rotor anchor clamps structure that magnetizes is from last to down spaced first to third coil standing groove that is provided with in proper order, has placed first to third charging coil in proper order in it, and the position of second charging coil is in the coplanar with rotor axial permanent magnet magnetic ring, and first to third charging coil are configured as a set of first charging coil and third charging coil and second charging coil pass through not strong pulse current of equidirectional intensity not at first simultaneously behind the strong pulse current of equidirectional .
Further, the first coil placing groove, the first charging coil and the third coil placing groove inside the first coil placing groove, and the third charging coil inside the third coil placing groove are located outside the axial space of the small magnetic stripe magnetized in the radial direction of the rotor tooth space.
Furthermore, the thickness of the second charging coil is 0.5-3 times of the thickness of the magnetic ring of the axial permanent magnet of the rotor, and the thickness of the first charging coil and the thickness of the third charging coil are larger than that of the second charging coil.
The utility model provides a stator module anchor clamps that magnetize of super strong type hybrid stepper motor which characterized in that: including the firm structure body that the magnetic permeability is greater than or equal to 1, firm structure body sets up the inside at super strong type hybrid step motor stator module, the outside of firm structure body has set gradually fourth to sixth coil standing groove from last to down along the axial, fourth to sixth coil standing groove have set gradually fourth to sixth charging coil, and wherein, fifth charging coil and stator core center in fifth coil standing groove and the fifth coil standing groove are in the coplanar, and the space between the little magnetic stripe of two sets of stator radial magnetization tooth's socket about being located, fourth to sixth charging coil are configured into fourth charging coil and sixth charging coil and are led to respectively with the strong pulse electric current of equidirectional not of equidirectional for a set ofly with the fifth charging coil.
Furthermore, the fourth coil placement groove, the sixth coil placement groove, the fourth charging coil inside the fourth coil placement groove, and the sixth charging coil inside the sixth coil placement groove are respectively and correspondingly located outside the axial space of the small magnetic stripe in the radial magnetizing tooth slot of the stator.
The invention has the beneficial effects that: the utility model provides a super strong type hybrid stepper motor's rotor subassembly anchor clamps that magnetize and super strong type hybrid stepper motor's stator module anchor clamps that magnetize can carry out saturation magnetization to the magnetic ring and the little magnetic stripe in super strong type hybrid stepper motor's the rotor and the stator respectively, and the torque characteristic after rotor and the stator assembly after magnetizing is improved greatly.
Drawings
FIG. 1 is a schematic view of a magnetizing fixture for a rotor assembly of a super-strong hybrid stepping motor according to the present embodiment;
fig. 2 is a schematic diagram illustrating a state of magnetic lines of force when a strong pulse current is applied to the first step of the rotor magnetizing fixture of the super-strong hybrid stepping motor according to the embodiment;
fig. 3 is a schematic diagram of the state of magnetic lines of force when the rotor magnetizing fixture of the super-strong hybrid stepping motor of the present embodiment is energized with a strong pulse current in the second step;
fig. 4 is a schematic view of a magnetizing fixture for a stator assembly of the super-strong hybrid stepping motor according to the embodiment;
fig. 5 is a schematic diagram illustrating a state of magnetic lines when a strong pulse current is applied to the stator magnetizing fixture of the super-strong hybrid stepping motor in this embodiment;
fig. 6 is a diagram illustrating an example of torque measurement of the super-strong hybrid stepping motor according to the present embodiment.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features of the following embodiments and examples may be combined with each other without conflict.
As shown in fig. 1, a rotor assembly magnetizing fixture of a super-strong hybrid stepping motor comprises a rotor magnetizing fixture structure 1 with a magnetic permeability greater than or equal to 1, an inner cavity of the rotor magnetizing fixture structure is used for arranging a rotor 2 to be magnetized, wherein a rotor axial permanent magnet magnetic ring 21 is arranged in the middle of the rotor 2, a plurality of vertical small magnetic stripes 22 which are perpendicular to the rotor axial permanent magnet magnetic ring 21 and are arranged at intervals and magnetized along the radial direction of a rotor tooth space are respectively arranged on the rotor 2 in the circumferential direction at two sides of the rotor axial permanent magnet magnetic ring 21, first to third coil placing grooves are sequentially arranged in the inner cavity of the rotor magnetizing fixture structure from top to bottom at intervals, the first coil placing groove and the third coil placing groove have the same structure and size, a first charging coil and a third charging coil are respectively arranged in the first charging coil and the third charging coil, and the first charging coil 3 and the third charging coil 4 have the same structure and size, the position of the second charging coil 5 and the rotor axial permanent magnet magnetic ring 21 are in the same plane.
First coil standing groove and inside first charging coil 3 and third coil standing groove and inside third charging coil 4 all are located the rotor tooth's socket and along the radial outside magnetic stripe of magnetization of rotor tooth's socket.
The thickness of the second charging coil is 0.5-3 times of the thickness of the rotor axial permanent magnet magnetic ring 21. The thickness of the first and third charging coils is greater than the thickness of the second charging coil.
The rotor assembly magnetizing clamp of the super-strong hybrid stepping motor magnetizes the rotor in the following process: the first step, regard first charging coil 3 and third charging coil 4 as a set of, pass through the not equidirectional strong pulse current of different intensity simultaneously with second charging coil 5, make the little magnetic stripe 22 saturation magnetization of rotor tooth's socket radial magnetization, at this moment in the magnetic field of being produced in the tooth's socket magnet steel of the rotor subassembly that magnetizes 0.6 ~ 7T within range, at this moment the polarity of rotor axial magnet steel is opposite with actual requirement.
Fig. 2 shows the state of the magnetic lines at this time; and secondly, the first charging coil 3 and the third charging coil 4 are used as a group, and the strong pulse currents with different intensities and the same direction are simultaneously passed through the second charging coil 5, so that the maximum field intensity of the axial magnetic steel is within the range of 2-7T, the radial tooth space magnetic steel and the axial magnetic steel finally reach saturation magnetization, the rotor axial permanent magnet magnetic ring is further subjected to saturation magnetization according to the direction required by the motor magnetic ring, the demagnetization of the rotor tooth space permanent magnet small magnetic strip is not caused, and the magnetic line state at the moment is represented by a figure 3.
As shown in fig. 4, a stator module magnetizing fixture of a super-strong hybrid stepping motor comprises a solid structure body 6 with a magnetic permeability greater than or equal to 1, wherein the solid structure body 6 is arranged inside a super-strong hybrid stepping motor stator module 11, the solid structure body 6 is provided with fourth to sixth coil placing grooves along the axial direction, the fourth to sixth coil placing grooves are provided with fourth to sixth charging coils in sequence, and the fifth charging coils 7 in the fifth coil placing grooves and the fifth coil placing grooves are located on the same plane as the center of a stator core.
And the fourth coil placing groove, the sixth coil placing groove, the fourth charging coil 8 and the sixth charging coil 9 are respectively positioned outside the axial space of the small magnetic stripe 10 of the radial magnetization tooth slot in the stator tooth slot.
The stator component magnetizing clamp of the super-strong hybrid stepping motor magnetizes the stator in the following process: regard as a set with fourth charging coil 8 and sixth charging coil 9, lead to the strong pulse current with the different directions of different intensity with fifth charging coil 7, the magnetic field that produces in the radial tooth's socket magnet steel of the stator module that is magnetized is in 0.6 ~ 7T within range. In this way, the small magnetic strips 10 in the radial magnetized slot in the stator slot are saturated and magnetized, and fig. 5 shows the magnetic line state at this time.
As shown in figure 6, the two super-strong hybrid stepping motors keep actual measured data of torque, the two motors are completely the same and only have different magnetizing modes, ☉ in the figure shows that under the condition of no magnetizing clamp, the rotor magnetic ring, the stator small magnetic strip and the rotor small magnetic strip are assembled after being magnetized in advance, although the assembly and the magnetizing are not suitable for batch production, the rotor magnetic ring and the permanent magnet small strip can reach saturated magnetizing, x in the figure shows that the magnetizing device is used for magnetizing after the stator and the rotor are assembled, then the actual measured data points of the motors are obtained, x and ☉ in the figure are difficult to be respectively connected into two different characteristics, and can be connected into the torque keeping characteristic which is consistent between the two motor phases, therefore, the effectiveness of the magnetizing device and the magnetizing method can be proved, the rotor and the stator and rotor small magnetic strips can be respectively saturated and magnetized along the axial direction and the radial direction, in the rotor magnetic ring of the embodiment, 100 small magnetic strips of the rotor and 72 small magnetic strips of the stator are magnetized to easily achieve saturation magnetization, the torque characteristic of the integrally magnetized motor is kept consistent with that of the separately magnetized motor, the magnetic strips of the magnetic ring are all saturated and magnetized, and the torque characteristic of the motor is improved.
The above embodiments are merely representative of the centralized embodiments of the present invention, and the description thereof is specific and detailed, but it should not be understood as the limitation of the scope of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the spirit of the present invention, and these changes and modifications all fall into the protection scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (5)
1. The utility model provides a super strong type hybrid stepping motor's rotor subassembly anchor clamps that magnetize which characterized in that: including the rotor anchor clamps structure that magnetizes that magnetic permeability is greater than or equal to 1, the inner chamber of rotor anchor clamps structure that magnetizes is used for setting up the rotor that needs magnetize, and wherein, the middle part of rotor is provided with rotor axial permanent magnet magnetic ring, and the circumference that lies in the both sides of rotor axial permanent magnet magnetic ring on the rotor respectively is provided with a plurality of vertical and perpendicular to rotor axial permanent magnet magnetic ring's interval arrangement, along the radial magnetized little magnetic stripe of rotor tooth's socket, the inner chamber of rotor anchor clamps structure that magnetizes is from last to down spaced first to third coil standing groove that is provided with in proper order, has placed first to third charging coil in proper order in it, and the position of second charging coil is in the coplanar with rotor axial permanent magnet magnetic ring, and first to third charging coil are configured as a set of first charging coil and third charging coil and second charging coil pass through not strong pulse current of equidirectional intensity not at first simultaneously behind the strong pulse current of equidirectional .
2. The magnetizing jig for a rotor assembly of a super-strong hybrid stepping motor according to claim 1, wherein: the first coil placing groove, the first charging coil inside the first coil placing groove, the third coil placing groove and the third charging coil inside the third coil placing groove are located outside the axial space of the small magnetic stripe magnetized in the radial direction of the rotor tooth space.
3. The magnetizing jig for a rotor assembly of a super-strong hybrid stepping motor according to claim 1, wherein: the thickness of the second charging coil is 0.5-3 times of the thickness of the magnetic ring of the axial permanent magnet of the rotor, and the thickness of the first charging coil and the thickness of the third charging coil are larger than that of the second charging coil.
4. The utility model provides a stator module anchor clamps that magnetize of super strong type hybrid stepper motor which characterized in that: including the firm structure body that the magnetic permeability is greater than or equal to 1, firm structure body sets up the inside at super strong type hybrid step motor stator module, firm structure originally outside has set gradually fourth to sixth coil standing groove from last to down along the axial, fourth to sixth coil standing groove have set gradually fourth to sixth charging coil in, wherein, fifth charging coil and stator core center in fifth coil standing groove and the fifth coil standing groove are in the coplanar, and are located the space between the little magnetic stripe of two sets of radial magnetization tooth's socket of upper and lower stator, fourth to sixth charging coil are configured into fourth charging coil and sixth charging coil and are led to respectively with the strong pulse electric current of equidirectional not strong with the fifth charging coil for a set ofly.
5. The stator assembly magnetizing jig of a hybrid stepping motor of claim 4, wherein: and the fourth coil placing groove, the sixth coil placing groove, the fourth charging coil and the sixth charging coil are respectively and correspondingly positioned outside the axial space of the small magnetic stripe of the radial magnetized tooth slot of the stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387941.4A CN111128510A (en) | 2019-12-30 | 2019-12-30 | Magnetizing device for super-strong hybrid stepping motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387941.4A CN111128510A (en) | 2019-12-30 | 2019-12-30 | Magnetizing device for super-strong hybrid stepping motor |
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| CN111128510A true CN111128510A (en) | 2020-05-08 |
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| CN201911387941.4A Pending CN111128510A (en) | 2019-12-30 | 2019-12-30 | Magnetizing device for super-strong hybrid stepping motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613569A (en) * | 2022-03-14 | 2022-06-10 | 华中科技大学 | Method and device for axially magnetizing permanent magnet ring |
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2019
- 2019-12-30 CN CN201911387941.4A patent/CN111128510A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613569A (en) * | 2022-03-14 | 2022-06-10 | 华中科技大学 | Method and device for axially magnetizing permanent magnet ring |
| CN114613569B (en) * | 2022-03-14 | 2022-11-11 | 华中科技大学 | Method and device for axially magnetizing permanent magnet ring |
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