CN1224159C - Step-by-step motor rotor magnetic field structure and its manufacture method - Google Patents
Step-by-step motor rotor magnetic field structure and its manufacture method Download PDFInfo
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- CN1224159C CN1224159C CN 02148447 CN02148447A CN1224159C CN 1224159 C CN1224159 C CN 1224159C CN 02148447 CN02148447 CN 02148447 CN 02148447 A CN02148447 A CN 02148447A CN 1224159 C CN1224159 C CN 1224159C
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- magnetic field
- rotor
- silicon steel
- magnetized head
- tilt angle
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Abstract
The present invention discloses a rotor magnetic field structure of a step motor and a manufacturing method thereof. A plurality of silicon steel sheets are respectively manufactured for passing through slots of conducting wires, and then a magnetism charging head is stacked by a mould to form a magnetism charging seat and a plurality of channels and is rotated to obtain an inclined angle theta<s>; then, the magnetism charging head is inserted in a cooling system, and a rotor is arranged in the magnetism charging seat of the magnetism charging head for charging magnetism, so that the rotor has the magnetic field structure with the inclined angle theta<s> after being charged with the magnetism.
Description
Technical field
The present invention relates to a kind of step motor rotor magnetic field structure and manufacture method thereof, especially refer to a kind of magnetic field structure that makes step motor rotor have certain angle of inclination, and can slow down the adjusting microinching torque that produces when stepper motor turns round, and then can reduce the manufacture method of vibrations and noise.
Background technology
As shown in Figure 1 and Figure 2, be the rotor of existing stepper motor, this rotor 8 is in the mode that forever magnetizes, and makes rotor 8 produce the magnetic field structure of most magnetic field lines 81, and can close with the magnetic pole of the stator tooth lotus root that an electric power excitation mode magnetizes, rotor 8 can be turned round according to magnetizing of magnetic pole tooth.
Yet the magnetic field line 81 of these rotor 8 magnetic field structures is and rotor 8 axially parallels, therefore 81 of this magnetic field line 81 and magnetic field lines can be at a distance of spacings 82, and this rotor 8 magnetic field structure so, the magnetic field line 81 that can make rotor 8 and the magnetic pole tooth of stator lotus root continuously close and join, and when rotor 8 is turned round according to magnetizing of magnetic pole tooth, produce that to produce adjusting microinching torque (DetentTorque) when incoherent running action causes the stepper motor running excessive, and cause vibrations and noise.
Summary of the invention
The objective of the invention is: a kind of step motor rotor magnetic field structure and manufacture method thereof are provided, utilize a mold stack to become a magnetized head by most silicon steel sheets, and the rotation magnetized head is obtained a tilt angle theta s, magnetized head is inserted in the cooling system again, again rotor is inserted in the magnetism-filling base and magnetize, make rotor after magnetizing, have the magnetic field structure of certain tilt angle theta s, when this rotor is turned round according to magnetizing of magnetic pole tooth, produce the running action of continuity, make the running of stepper motor smooth and easy, and can slow down the adjusting microinching torque (Detent Torque) that produces when turning round, and then reduce vibrations and noise.
Technical scheme of the present invention is: a kind of step motor rotor magnetic field structure, a plurality of magnetic field lines magnetizes on this rotor, respectively this magnetic field line becomes certain angle of inclination respectively with rotor axial, and respectively the upper/lower terminal of this magnetic field line and adjacent magnetic field line can join but be not overlapping, and formula 0 degree＜θ s≤θ * 50% is used in obtaining of this tilt angle theta s, and the obtaining of this angle θ, as formula θ=360 degree/N, N is the quantity of magnetic field line.
A kind of manufacture method of aforesaid step motor rotor magnetic field structure, it comprises the following steps:
Make silicon steel sheet: with the line cutting mode, the periphery of silicon steel sheet is offered location notch relative more than two, and offer a circular hole in the center of this silicon steel sheet, the periphery of this circular hole offers a plurality of short slots identical with the magnetic field line quantity of this rotor;
Pile up: will these a plurality of silicon steel sheets that completed, become a magnetized head by a mold stack, and make the circular hole alignment of each silicon steel sheet, forming a magnetism-filling base, and respectively after this short slot alignment, to form conduit together;
Gyration: will be stacked in a plurality of silicon steel sheets on this mould, and, make respectively this conduit and axis after the alignment be inclined to a tilt angle theta s by this mould one angle of rotation;
Fixed angle: will be rotated into the location notch cementation of a plurality of silicon steel sheets one side of this tilt angle theta s, making a plurality of silicon steel sheets that are rotated into this tilt angle theta s fixed is one;
Magnetized head is finished: a plurality of silicon steel sheets with side location notch cementation, take off from this mould, and again with the location notch cementation of opposite side, making these a plurality of silicon steel sheets fixed is one to have the magnetized head of the conduit of constant tilt angle θ s;
Wear lead: a plurality of leads that will be identical with this conduit quantity penetrate respectively in respectively this conduit of this magnetized head;
Implant cooling system: this magnetized head that has worn lead is implanted in the cooling system, magnetized with preparation;
Fixing cord: it is fixing that a plurality of leads on this magnetized head are insulated respectively, causes short circuit to avoid respectively being in contact with one another between this lead;
Insert rotor: a rotor that does not magnetize is inserted in the magnetism-filling base at this magnetized head center, with preparation this rotor that magnetizes;
Magnetize: with a plurality of lead energisings of this magnetized head, with this rotor that magnetizes;
Finish: this rotor that has magnetized is taken out in this magnetized head, and this rotor promptly has the magnetic field structure of the magnetic field line of these a plurality of tilt angle theta s.
Advantage of the present invention is:
1. because this rotor has the magnetic field structure of the magnetic field line of most tilt angle theta s, its each magnetic field line all has tilt angle theta s, therefore this magnetic field line and the adjacent magnetic field line hypotelorism of being separated by, the magnetic pole tooth that makes magnetic field line and stator lotus root continuously closes and joins, and when this rotor is turned round according to magnetizing of magnetic pole tooth, the adjusting microinching torque (Detent Torque) that produces when generation slows down running, and then reduce vibrations and noise.
2. as shown in figure 19, running test curve figure for the rotor of tool tilt angle theta s magnetic field structure of the present invention, and it is shown in Figure 20, running test curve figure for existing rotor, by both more as can be known, under the same conditions, the present invention in the running, the curve drop of its adjusting microinching torque (Detent Torque) relaxes, and existing rotor in the running, the curve drop of its adjusting microinching torque (Detent Torque) is bigger, so the present invention can slow down the adjusting microinching torque (Detent Torque) that when running produces really, and then reduces vibrations and noise.
Description of drawings
The invention will be further described below in conjunction with embodiment:
Fig. 1 is the outside drawing of existing rotor;
Fig. 2 is existing rotor field structural representation;
Wherein: 8 rotors; 81 magnetic field lines; 82 spacings.
Fig. 3 is the schematic diagram of rotor field of the present invention structure;
Fig. 4 makes the flow chart of rotor field structure for the present invention;
Fig. 5 is a silicon steel sheet structural representation of the present invention;
Fig. 6 is the part enlarged drawing of silicon steel sheet circular hole of the present invention;
Fig. 7 is the three-dimensional exploded view of mould structure of the present invention;
Fig. 8 utilizes the schematic diagram of mold stack silicon steel sheet for the present invention;
Fig. 9 for the present invention with the mold stack silicon steel sheet schematic diagram before the gyration not;
Figure 10 is the schematic diagram of the present invention after with mold stack silicon steel sheet gyration;
Figure 11 is the present invention this conduit and the schematic diagram that axially becomes the angle of inclination behind gyration;
Figure 12 is outside drawing fixing behind the silicon steel sheet gyration of the present invention;
Figure 13 wears the schematic diagram of lead for the present invention;
Figure 14 is the three-dimensional exploded view of cooling system structure of the present invention;
Figure 15 is the schematic diagram in the magnetized head implantation cooling system of the present invention;
Figure 16 inserts the schematic diagram of magnetism-filling base for rotor of the present invention;
The schematic diagram that Figure 17 magnetizes for the present invention's energising;
Figure 18 is for having the magnetic field structure schematic diagram of most angles of inclination magnetic field line behind the magnetizing of the present invention;
Figure 19 is running test curve figure of the present invention;
Figure 20 is the running test curve figure of existing rotor.
Wherein: 1 rotor; 11 magnetic field lines; 2 silicon steel sheets; 21 location notchs; 22 circular holes; 23 short slots; 3 moulds; 31 bases; 32 newels; 33 loam cakes; 34 guide rods; 341 embedding ribs; 342 elliptical apertures; 343 screws; 4 magnetized heads; 41 magnetism-filling bases; 42 conduits; 5 leads; 6 cooling systems; 61 pedestals, 62 water channels; 63 rooms; 64 water inlets; 65 delivery ports; 66 lids; 661 perforation.
Embodiment
Embodiment: as shown in Figure 3, be the selected embodiment step of the present invention.
The present invention is a kind of step motor rotor magnetic field structure and manufacture method thereof, the magnetic field structure of this rotor, lie in most magnetic field line 11 that magnetizes on this rotor 1, respectively this magnetic field line 11 axially becomes certain tilt angle theta s with rotor 1 respectively, and on magnetic field line 11 and the adjacent magnetic field line 11, following two ends can join but be not overlapping, and formula 0 degree＜θ s≤θ * 50% is used in obtaining of this tilt angle theta s, and the obtaining of this angle θ, as formula θ=360 degree/N, N is the quantity of magnetic field line, in the present embodiment, the quantity of this magnetic field line 11 is 18, so this angle θ s is 20 degree, so this tilt angle theta s is between 0 degree and 10 is spent, in the present embodiment, this tilt angle theta s is an example with 10 degree.
To shown in Figure 180, the manufacture method of this rotor tool angle of inclination magnetic field structure comprises as Fig. 4:
Make silicon steel sheet: with the line cutting mode, the periphery of silicon steel sheet 2 is offered two relative location notchs 21, and offer a circular hole 22 in the center of this silicon steel sheet 2, the periphery of this circular hole 22 offers the most short slots 23 identical with magnetic field line 11 quantity, in the present embodiment, the quantity of this magnetic field line 11 is 18, so this circular hole 22 offers 18 short slots 23;
Pile up: the silicon steel sheet 2 that should majority have completed, be stacked into a magnetized head 4 by a mould 3, in the present embodiment, pile up with 32 silicon steel sheets 2, and lying in a base 31, this mould 3 is provided with a newel 32, the sheathed loam cake 33 in the top of this newel 32, and be provided with a guide rod 34 in a side of newel 32, one side of these guide rod 34 relative newels 32 has an embedding rib 341, and the upper/lower terminal of this guide rod 34 is offered an elliptical aperture 342 respectively, and can be respectively be fixed at base 31 and loam cake 33 with a screw 343 elliptical aperture 342 that stretches through.Whereby can be with should majority silicon steel sheet 2, be placed in its circular hole 22 on the newel 32 of mould 3, and the location notch 21 that makes silicon steel sheet 2 one sides is embedded on the embedding rib 341 of this guide rod 34, and the circular hole 22 of each silicon steel sheet 2 is alignd, to form a magnetism-filling base 41, and after each short slot 23 alignment of circular hole 22, to form conduit 42 together;
Gyration: will be stacked in the most silicon steel sheets 2 on this mould 3, and, make respectively this conduit 42 after the alignment be inclined to a tilt angle theta s with axis by these mould 3 one angles of rotation;
Fixed angle: will be rotated into the location notch 21 of most silicon steel sheets 2 one sides of this tilt angle theta s, and, make that the most silicon steel sheets 2 that are rotated into this tilt angle theta s are fixed to be one with the glue cementation;
Magnetized head is finished: with most silicon steel sheets 2 of a side location notch 21 cementation, take off from this mould 3, again with the location notch 21 of opposite side, with the glue cementation, making this majority silicon steel sheet 2 fixed is one to have the magnetized head 2 of constant tilt angle θ s conduit 42;
Wear lead: most leads 5 that will be identical with these conduit 42 quantity, i.e. 18 leads 5, in the present embodiment, this lead 5 is an enamelled wire, penetrates respectively in respectively this conduit 42 of this magnetized head 4;
Implant cooling system: this magnetized head 4 that has worn lead 5 is implanted in the cooling system 6, this cooling system 6 has a pedestal 61, has water channel 62 in this pedestal 61, these water channel 62 centers are a room 63, and these water channel 62 two ends are respectively equipped with a water inlet 64 and a delivery port 65, and the end face of this pedestal 61 is covered with the lid 66 of tool perforation 661, whereby, this magnetized head 4 that has worn lead 5 is implanted in the room 63 of this cooling system 6, again this lid 66 is covered on the pedestal 61, make water channel 62 airtight and fix this magnetized head 4, and the lead 5 on this magnetized head 4 is passed by the perforation 661 of this lid 66;
Fixing cord: it is fixing that the most leads 5 on this magnetized head 4 are insulated respectively, causes short circuit to avoid respectively 5 in this lead to be in contact with one another;
Insert rotor: a rotor that does not magnetize 1 is inserted in the magnetism-filling base 41 at these magnetized head 4 centers, with preparation this rotor 1 that magnetizes;
Magnetize: with a plurality of leads 5 energisings of this magnetized head 4, with this rotor 1 that magnetizes, because when magnetizing, magnetized head 4 can produce high temperature, can inject cooling fluid in the water channel 62 of this cooling system 6, and with water inlet 64 and delivery port 65, the mode of one-in-and-one-out makes liquid circulation, to reduce the high temperature that is produced when magnetized head 4 magnetizes;
Finish: this rotor that has magnetized 1 is taken out in this magnetized head 4, and this rotor 1 promptly has the magnetic field structure of the magnetic field line of this majority tilt angle theta s.
Because it is as can be known above-mentioned, step motor rotor magnetic field structure of the present invention and manufacture method thereof, it mainly is earlier with the line cutting mode, the silicon steel sheet 2 of majority is produced location notch 21 respectively, circular hole 11 and short slot 23, silicon steel sheet 2 that again should majority, be stacked into a magnetized head 4 with a mould 3, and every silicon steel sheet 2 circular holes 22 are alignd, to form a magnetism-filling base 41, and after each short slot 23 alignment, to form conduit 42 together, rotate this mould 3 one angles again, make respectively this conduit 42 after the alignment be inclined to this tilt angle theta s with axis, to be rotated into most silicon steel sheets 2 of this tilt angle theta s more, location notch 21 with glue cementation both sides, making this majority silicon steel sheet 2 fixed is the magnetized head 4 of a tool constant tilt angle θ s conduit 42, again with most leads 5 of identical these conduit 42 quantity, penetrate respectively in respectively this conduit 42 of magnetized head 4, again this magnetized head 4 is implanted in the cooling system 6, it is fixing the most leads 5 on the magnetized head 4 to be insulated respectively, again a rotor that does not magnetize 1 is inserted in the magnetism-filling base 41 at these magnetized head 4 centers, again with 5 energisings of the most leads on the magnetized head 4, with the rotor 1 that magnetizes, the rotor 1 that will magnetize again takes out in the magnetism-filling base 41 of magnetized head 4, and this rotor 1 promptly has the magnetic field structure of the magnetic field line 11 of most tilt angle theta s.
Because this rotor 1 has the magnetic field structure of the magnetic field line 11 of most tilt angle theta s, its each magnetic field line 11 all has tilt angle theta s, therefore this magnetic field line 11 and adjacent magnetic field line 11 hypotelorism of being separated by, the magnetic pole tooth that makes magnetic field line 11 and stator lotus root continuously closes and joins, and when this rotor 1 is turned round according to magnetizing of magnetic pole tooth, the adjusting microinching torque (Detent Torque) that produces when generation slows down running, and then reduce vibrations and noise.
As shown in figure 19, running test curve figure for the rotor of tool tilt angle theta s magnetic field structure of the present invention, and it is shown in Figure 20, running test curve figure for existing rotor, by both more as can be known, under the same conditions, the present invention in the running, the curve drop of its adjusting microinching torque (Detent Torque) relaxes, and existing rotor in the running, the curve drop of its adjusting microinching torque (Detent Torque) is bigger, so the present invention can slow down the adjusting microinching torque (Detent Torque) that when running produces really, and then reduces vibrations and noise.
Claims (2)
1. step motor rotor magnetic field structure, a plurality of magnetic field lines magnetizes on this rotor, respectively this magnetic field line becomes certain angle of inclination respectively with rotor axial, and respectively the upper/lower terminal of this magnetic field line and adjacent magnetic field line can join but be not overlapping, and formula 0 degree＜θ s≤θ * 50% is used in obtaining of this tilt angle theta s, and formula θ=360 degree/N are used in obtaining of this angle θ, and N is the quantity of magnetic field line.
2. the manufacture method of a step motor rotor magnetic field structure as claimed in claim 1, it comprises the following steps:
Make silicon steel sheet: with the line cutting mode, the periphery of silicon steel sheet is offered location notch relative more than two, and offer a circular hole in the center of this silicon steel sheet, the periphery of this circular hole offers a plurality of short slots identical with the magnetic field line quantity of this rotor;
Pile up: will these a plurality of silicon steel sheets that completed, become a magnetized head by a mold stack, and make the circular hole alignment of each silicon steel sheet, forming a magnetism-filling base, and respectively after this short slot alignment, to form conduit together;
Gyration: will be stacked in a plurality of silicon steel sheets on this mould, and, make respectively this conduit and axis after the alignment be inclined to a tilt angle theta s by this mould one angle of rotation;
Fixed angle: will be rotated into the location notch cementation of a plurality of silicon steel sheets one side of this tilt angle theta s, making a plurality of silicon steel sheets that are rotated into this tilt angle theta s fixed is one;
Magnetized head is finished: a plurality of silicon steel sheets with side location notch cementation, take off from this mould, and again with the location notch cementation of opposite side, making these a plurality of silicon steel sheets fixed is one to have the magnetized head of the conduit of constant tilt angle θ s;
Wear lead: a plurality of leads that will be identical with this conduit quantity penetrate respectively in respectively this conduit of this magnetized head;
Implant cooling system: this magnetized head that has worn lead is implanted in the cooling system, magnetized with preparation;
Fixing cord: it is fixing that a plurality of leads on this magnetized head are insulated respectively, causes short circuit to avoid respectively being in contact with one another between this lead;
Insert rotor: a rotor that does not magnetize is inserted in the magnetism-filling base at this magnetized head center, with preparation this rotor that magnetizes;
Magnetize: with a plurality of lead energisings of this magnetized head, with this rotor that magnetizes;
Finish: this rotor that has magnetized is taken out in this magnetized head, and this rotor promptly has the magnetic field structure of the magnetic field line of these a plurality of tilt angle theta s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02148447 CN1224159C (en) | 2002-12-03 | 2002-12-03 | Step-by-step motor rotor magnetic field structure and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02148447 CN1224159C (en) | 2002-12-03 | 2002-12-03 | Step-by-step motor rotor magnetic field structure and its manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1423399A CN1423399A (en) | 2003-06-11 |
| CN1224159C true CN1224159C (en) | 2005-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02148447 Expired - Fee Related CN1224159C (en) | 2002-12-03 | 2002-12-03 | Step-by-step motor rotor magnetic field structure and its manufacture method |
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| Country | Link |
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| CN (1) | CN1224159C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4089527B2 (en) * | 2003-06-27 | 2008-05-28 | 三菱電機株式会社 | Permanent magnet rotating electric machine |
| JP2010279156A (en) * | 2009-05-28 | 2010-12-09 | Fuji Electric Systems Co Ltd | Permanent magnet type rotating machine |
| CN102510137B (en) * | 2011-10-25 | 2015-05-27 | 捷和电机（深圳）有限公司 | Magnetic component, motor and ceiling fan comprising motor |
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2002
- 2002-12-03 CN CN 02148447 patent/CN1224159C/en not_active Expired - Fee Related
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| CN1423399A (en) | 2003-06-11 |
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