CN109756089B - Axial split-phase mixed stepping motor - Google Patents
Axial split-phase mixed stepping motor Download PDFInfo
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- CN109756089B CN109756089B CN201910185934.XA CN201910185934A CN109756089B CN 109756089 B CN109756089 B CN 109756089B CN 201910185934 A CN201910185934 A CN 201910185934A CN 109756089 B CN109756089 B CN 109756089B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 238000004804 winding Methods 0.000 claims abstract description 26
- 239000000696 magnetic material Substances 0.000 claims description 13
- 230000005284 excitation Effects 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 108700041286 delta Proteins 0.000 description 6
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
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Abstract
The invention discloses an axial split-phase hybrid stepping motor, which comprises a stator part, a rotor part, a left end cover and a right end cover, wherein the left end cover and the right end cover are respectively arranged at two ends of the stator part, and the rotor part is positioned in the stator part; the stator part comprises an inner left stator, an outer left stator, an inner right stator, an outer right stator, a first winding ring, a first control coil, a second winding ring and a second control coil, the rotor part comprises a left rotor, a right rotor, a magnetic steel sheet and a rotating shaft, and 4n+1 small teeth are respectively arranged on the stator part and the rotor part. The stator part of the invention has no larger magnetic poles, the stator part and the rotor part are not provided with small teeth, the step angle can be adjusted by the number of the small teeth, the small teeth are simple to process, the production of the whole device is convenient, and the production cost is reduced.
Description
Technical Field
The invention relates to the field of motors, in particular to an axial split-phase hybrid stepping motor.
Background
The stepper motor is classified into a reluctance stepper motor, a permanent magnet stepper motor and a hybrid stepper motor. The reluctance type stepping motor has high precision, low manufacturing cost, high power consumption and small output torque and power; although the permanent magnet stepping motor has small power consumption, the stepping angle is large, and the operation precision is low. In contrast, the hybrid stepper motor combines the advantages of a reluctance stepper motor and a permanent magnet stepper motor, has small power consumption, large output torque and high control precision, and can provide certain self-positioning torque. However, the conventional hybrid stepper motor still has certain defects in terms of structure:
1. the design of the step angle in the traditional hybrid stepping motor is limited by the large number of teeth, and the small step angle is difficult to realize.
2. The winding of the winding in the traditional hybrid stepping motor is complex, and the stator part of the motor is difficult to install.
3. The permanent magnet of the traditional hybrid stepping motor is magnetized along the axial direction, the stator part and the rotor part iron core are formed by laminating silicon steel sheets, and a non-magnetic insulation layer exists between the silicon steel sheets, so that the axial magnetic permeability of the stator part and the rotor part iron core is reduced, and the rotational inertia of the motor is increased.
Disclosure of Invention
The invention aims to solve the problems that the traditional hybrid stepping motor is difficult to realize a small-step angle, the winding is complex, the stator is difficult to install, the magnetic permeability of a non-magnetic insulating layer between silicon steel sheets of a stator part and a rotor part iron core is reduced, and the rotational inertia of a motor is increased.
The invention realizes the above purpose through the following technical scheme: the axial split-phase hybrid stepping motor comprises a stator part, a rotor part, a left end cover and a right end cover, wherein the left end cover and the right end cover are respectively arranged at two ends of the stator part, and the rotor part is positioned in the stator part; the stator part comprises an inner left stator, an outer left stator, an inner right stator, an outer right stator, a first winding ring, a first control coil, a second winding ring and a second control coil, and annular grooves with square cross sections are formed in the inner left stator, the outer left stator, the inner right stator and the outer right stator; the annular groove of the outer left stator and the annular groove of the inner left stator form a first annular cavity, the first winding ring is arranged in the first annular cavity, and the first control coil is wound on the first winding ring to form a first phase current excitation source; the annular groove of the outer right stator and the annular groove of the inner right stator form a second annular cavity, the second winding ring is arranged in the second annular cavity, and the second control coil is wound on the second winding ring to form a second phase current excitation source; at least four installation pin holes corresponding to each other are formed in the inner left stator, the outer left stator, the inner right stator and the outer right stator; the inner left stator, the outer left stator, the inner right stator and the outer right stator are provided with 4n+1 uniformly arranged small teeth, wherein n is a positive integer; the rotor part comprises a left rotor, a right rotor, magnetic steel sheets, a bearing, a shaft sleeve and a rotating shaft, wherein the left rotor and the right rotor are provided with uniform small teeth with the same number as the stator part; square through holes are formed in the surfaces, close to each other, of the left rotor and the right rotor, square bosses are arranged on the rotating shaft, the rotating shaft sequentially penetrates through the left rotor, the magnetic steel sheets and the right rotor, and the sum of the length of the square through holes above the left rotor, the length of the square through holes above the right rotor and the thickness of the magnetic steel sheets is equal to the length of the square bosses above the rotating shaft; the rotating shaft is fixed with the left rotor and the right rotor and aligned with small teeth on the left rotor and the right rotor through square through holes on the square bosses and the left rotor and the right rotor; the two ends of the rotating shaft are respectively connected to the left end cover and the right end cover through bearings, the rotating shaft is also sleeved with two shaft sleeves, one shaft sleeve is sleeved on the rotating shaft between the left end cover and the left rotor, one end of the shaft sleeve is fixedly propped against the left rotor, and the other end is fixedly propped against the bearings on the left end cover; the other shaft sleeve is sleeved on the rotating shaft between the right end cover and the right rotor, one end of the shaft sleeve is fixedly propped against the right rotor, and the other end is fixedly propped against the bearing on the right end cover.
Further, the inner left stator, the outer left stator, the inner right stator and the outer right stator are formed by processing a whole soft magnetic material, and the left rotor and the right rotor are formed by processing the whole soft magnetic material.
Further, the outer contour shapes of the inner left stator, the outer left stator, the inner right stator and the outer right stator are identical.
Furthermore, the soft magnetic materials of the inner left stator, the outer left stator, the inner right stator, the outer right stator, the left rotor and the right rotor are made of metal soft magnetic materials with high magnetic permeability.
Further, the inner rings of the inner left stator, the outer left stator, the inner right stator and the outer right stator are provided with 45 uniformly arranged small teeth, the small teeth on the inner left stator and the small teeth on the outer left stator are staggered by 1/2 of the tooth pitch, the small teeth on the inner right stator and the small teeth on the outer right stator are staggered by 1/2 of the tooth pitch, and the small teeth on the inner left stator clockwise exceed the small teeth on the inner right stator by 1/4 of the tooth pitch.
Further, the positions of the small teeth on the inner left stator, the outer left stator, the inner right stator and the outer right stator are precisely positioned in staggered tooth relation through cylindrical pins.
Further, notches of left and right coil outlets are formed in the outer side faces of the outer left stator and the outer right stator.
Further, the left rotor and the right rotor are both processed into hollow annular shapes. The left rotor and the right rotor can be further reduced in weight, and the axial length of the inner rings of the left rotor and the right rotor is reduced by lengthening the length of the shaft sleeve.
Further, the magnetic steel sheet is fixed between the left rotor and the right rotor, the magnetic steel sheet is axially magnetized, the left side of the magnetic steel sheet is an N pole, and the right side of the magnetic steel sheet is an S pole.
The invention has the beneficial effects that:
1. the stator part of the invention has no larger magnetic poles, the stator part and the rotor part are not provided with small teeth, the step angle can be adjusted by the number of the small teeth, the small teeth are simple to process, the production of the whole device is convenient, and the production cost is reduced.
2. The four stators of the stator part and the two rotors of the rotor part are formed by processing a whole soft magnetic material, and compared with the stator part and the rotor part formed by laminating silicon steel sheets, the magnetic permeability of the stator part and the rotor part of the stator part is greatly improved, and the weight of the stator part and the rotor part is reduced.
3. The rotor part of the invention is internally provided with the square shape, so that the small teeth of the left rotor can generate 1/4 tooth pitch with the small teeth of the right rotor every 90 degrees of rotation, and the staggered teeth of the rotor part are convenient to install.
4. The rotor part of the invention adopts a hollow ring structure, thereby greatly reducing the moment of inertia of the device and improving the dynamic response capability of the device.
5. The stator part of the invention is divided into four sections of an inner left stator, an outer left stator, an inner right stator and an outer right stator to form two annular coil grooves, the coils are wound circumferentially, and the winding is convenient to install and wind.
Drawings
Fig. 1 is a schematic view of the overall structure of an axial split-phase hybrid stepper motor of the present invention.
Fig. 2 is a schematic structural view of a rotor portion of the present invention.
Fig. 3 is a schematic structural view of a stator portion of the present invention.
Fig. 4 is a schematic structural view of the rotating shaft of the present invention.
Fig. 5 to 13 are schematic diagrams of the working principle of the present invention.
In the figure, a 1-right end cover, a 2-bearing, a 3-rotating shaft, a 4-shaft sleeve, a 5-right rotor, a 6-outer right stator, a 7-first winding ring, an 8-left rotor, a 9-outer left stator, a 10-left end cover, an 11-nut, a 12-cylindrical pin, a 13-inner left stator, a 14-inner right stator, a 15-first control coil, a 16-magnetic steel sheet, a 17-second winding ring, a 18-second control coil and a 19-mounting pin hole are arranged.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 13, an axial split-phase hybrid stepping motor comprises a stator part, a rotor part, a left end cover 10 and a right end cover 1, wherein the left end cover 10 and the right end cover 1 are respectively arranged at two ends of the stator part, and the rotor part is positioned in the stator part.
The stator part comprises an inner left stator 13, an outer left stator 9, an inner right stator 14, an outer right stator 6, a first winding ring 14, a first control coil 15, a second winding ring 17 and a second control coil 18, wherein the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 are all formed by processing a whole soft magnetic material, annular grooves with square cross sections are formed in the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6The cross section of the groove is square, so that the installation of the inner coil part is convenient; the annular groove of the outer left stator 9 and the annular groove of the inner left stator 13 form a first annular cavity, the first winding ring 14 is arranged in the first annular cavity, and the first control coil 15 is wound on the first winding ring 14 to form a first phase current excitation source; the annular groove of the outer right stator 6 and the annular groove of the inner right stator 14 form a second annular cavity, the second winding ring 17 is arranged in the second annular cavity, and the second control coil 18 is wound on the second winding ring 17 to form a second phase current excitation source; the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 are respectively provided with at least four mounting pin holes 19 which are in one-to-one correspondence, the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 are fixedly connected through cylindrical pins 12 penetrating through the mounting pin holes 19, one end of each cylindrical pin 13 is provided with threads and is fixedly connected with a threaded hole on a left end cover, and the other end of each cylindrical pin 13 is fixed through a nut 11; the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 are provided with 4n+1 uniformly arranged small teeth, wherein n is a positive integer. Adjacent stators can realize staggered tooth installation as follows: 0,1/4t s ，1/2t s ，3/4t s ，t s Wherein t is s Is the stator pitch.
The outer contour shapes of the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 are identical. The outer profiles of the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 are square as a whole, square grooves are formed in four corners of the square, the weight of the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 is further reduced, the weight of the whole device is reduced, and mounting pin holes are formed in two sides of the square grooves.
The inner rings of the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 are respectively provided with 45 uniformly arranged small teeth, the small teeth on the inner left stator 13 and the small teeth on the outer left stator 9 are staggered by 1/2 of the tooth pitch, the small teeth on the inner right stator 14 and the small teeth on the outer right stator 6 are staggered by 1/2 of the tooth pitch, and the small teeth on the inner left stator 13 are clockwise more than the small teeth on the inner right stator 14 by 1/4 of the tooth pitch.
The positions of the small teeth on the inner left stator 13, the outer left stator 9, the inner right stator 14 and the outer right stator 6 are precisely positioned in staggered relationship with each other through the cylindrical pin 12.
The outer side surfaces of the outer left stator 9 and the outer right stator 6 are provided with notches of left and right coil outlets. The two notches are respectively communicated with the first annular cavity and the second annular cavity and are used for the external connection of the lines of the first control coil 15 and the second control coil 18.
The rotor part comprises a left rotor 8, a right rotor 5, magnetic steel sheets 16 and a rotating shaft 3, wherein the left rotor 8 and the right rotor 5 are formed by processing a whole soft magnetic material, and uniform small teeth with the same number as that of the stator part are arranged on the left rotor 8 and the right rotor 5; square through holes are formed in the surfaces, close to each other, of the left rotor 8 and the right rotor 5, square bosses are arranged on the rotating shaft 3, and the sum of the length of the square through holes above the left rotor 8, the length of the square through holes above the right rotor 5 and the thickness of the magnetic steel sheet is equal to the length of the square bosses above the rotating shaft 3; the rotating shaft 3 sequentially passes through the left rotor 8, the magnetic steel sheet 16 and the right rotor 5, and the rotating shaft 3 is fixed with the left rotor 8 and the right rotor 5 and aligned with small teeth on the left rotor 8 and the right rotor 5 through square through holes on the square bosses and the left rotor 8 and the right rotor 5; two ends of the rotating shaft 3 are respectively connected to the left end cover 10 and the right end cover 1 through bearings 2, two shaft sleeves 4 are sleeved on the rotating shaft, one shaft sleeve 4 is sleeved on the rotating shaft between the left end cover 10 and the left rotor, one end of the shaft sleeve 4 is fixedly propped against the left rotor 8, and the other end is fixedly propped against the bearings 2 on the left end cover 10; the other shaft sleeve 4 is sleeved on the rotating shaft 3 between the right end cover 1 and the right rotor 5, one end of the shaft sleeve 4 is fixedly propped against the right rotor 5, and the other end is fixedly propped against the bearing 2 on the right end cover 1. .
The left rotor 8 and the right rotor 5 are both processed into hollow annular shapes. So that the left rotor 8 and the right rotor 5 can be further reduced in weight, and the axial length of the inner rings of the left rotor 8 and the right rotor 5 is reduced by lengthening the length of the sleeve 4. The magnetic steel sheet 16 is fixed between the left rotor 8 and the right rotor 5, the magnetic steel sheet 16 is axially magnetized, the left side of the magnetic steel sheet 16 is an N pole, and the right side is an S pole. The soft magnetic materials of the inner left stator 13, the outer left stator 9, the inner right stator 14, the outer right stator 6, the left rotor 8 and the right rotor 5 are metal soft magnetic materials with high magnetic permeability.
The control mode of the axial split-phase hybrid stepping motor can be a stepping mode, a subdivision stepping mode or even a continuous tracking control mode according to different application occasions. The working principle of the motor is described below by taking a stepping control two-phase eight-beat as an example.
From left to right, the stator and rotor portions form four annular working air gaps δ1, δ2, δ3 and δ4. The position where the device keeps stable balance is the position where the total air gap conductance of the stator part and the rotor part is maximum. It is assumed that the direction of current flow to the first control coil 15 and the second control coil 18 in the paper surface is positive, and the direction out of the paper surface is negative. When the first control coil 15 and the second control coil 18 are not energized, the positional relationship of the stator portion and the rotor portion is as shown in fig. 5 according to the magnetic circuit symmetry and the principle of maximum magnetic conductance; when the first control coil 11 is electrified in the negative direction and the second control coil 15 is not electrified, the direction of the current control magnetic field under the working air gap delta 1 is opposite to that of the magnetic steel polarized magnetic field, the magnetic field strength is weakened, the direction of the current control magnetic field under the working air gap delta 2 is the same as that of the magnetic steel polarized magnetic field, the magnetic field strength is enhanced, the rotor part is rotated by 1/8 of the tooth pitch by clockwise moment, and the position relationship between the stator part and the rotor part is shown in fig. 6; when the first control coil 11 is electrified in the negative direction and the second control coil 15 is electrified in the positive direction, the directions of the current control magnetic fields under the working air gaps delta 1 and delta 3 are opposite to the directions of the magnetic steel polarized magnetic fields, the magnetic field strength is weakened, the directions of the current control magnetic fields under the working air gaps delta 2 and delta 4 are the same as the directions of the magnetic steel polarized magnetic fields, the magnetic field strength is strengthened, the rotor part is rotated by 1/8 tooth pitch by clockwise moment, and the position relationship between the stator part and the rotor part is shown in figure 7; when the second control coil 15 is electrified in the positive direction and the first control coil 11 is not electrified, the direction of the current control magnetic field under the working air gap delta 3 is opposite to that of the magnetic steel polarized magnetic field, the magnetic field strength is weakened, the direction of the current control magnetic field under the working air gap delta 4 is the same as that of the magnetic steel polarized magnetic field, the magnetic field strength is enhanced, the rotor part is rotated by 1/8 of the tooth pitch by clockwise moment, and the position relationship between the stator part and the rotor part is shown in fig. 8; when the first control coil 11 and the second control coil 15 are electrified in the positive direction at the same time, the current control magnetic field under the working air gaps delta 1 and delta 4 is the same as the direction of the magnetic steel polarized magnetic field, the magnetic field strength is enhanced, the current control magnetic field under the working air gaps delta 2 and delta 3 is opposite to the direction of the magnetic steel polarized magnetic field, the magnetic field strength is weakened, the rotor part is rotated by 1/8 of the tooth pitch by clockwise moment, and the position relationship between the stator part and the rotor part is shown in figure 9; when the first control coil 11 is electrified in the positive direction and the second control coil 15 is not electrified, the current control magnetic field under the working air gap delta 1 is the same as the direction of the magnetic steel polarized magnetic field, the magnetic field strength is enhanced, the current control magnetic field under the working air gap delta 2 is opposite to the direction of the magnetic steel polarized magnetic field, the magnetic field strength is weakened, the rotor part is rotated by 1/8 of the tooth pitch by clockwise moment, and the position relationship between the stator part and the rotor part is shown in fig. 10; when the first control coil 11 is electrified in the positive direction and the second control coil 15 is electrified in the negative direction, the current control magnetic field under the working air gaps delta 1 and delta 3 is the same as the direction of the magnetic steel polarized magnetic field, the magnetic field strength is enhanced, the current control magnetic field under the working air gaps delta 2 and delta 4 is opposite to the direction of the magnetic steel polarized magnetic field, the magnetic field strength is weakened, the rotor part is rotated by 1/8 tooth pitch by clockwise moment, and the position relationship between the stator part and the rotor part is shown in figure 11; when the second control coil 15 is electrified in the negative direction and the first control coil 11 is not electrified, the current control magnetic field under the working air gap delta 3 is the same as the direction of the magnetic steel polarized magnetic field, the magnetic field strength is enhanced, the current control magnetic field under the working air gap delta 4 is opposite to the direction of the magnetic steel polarized magnetic field, the magnetic field strength is weakened, the rotor part is rotated by 1/8 of the tooth pitch by clockwise moment, and the position relationship between the stator part and the rotor part is shown in fig. 12; when the first control coil 11 and the second control coil 15 are electrified in the negative direction at the same time, the directions of the current control magnetic fields under the working air gaps delta 1 and delta 4 are opposite to the directions of the magnetic steel polarized magnetic fields, the magnetic field strength is weakened, the directions of the current control magnetic fields under the working air gaps delta 2 and delta 3 are the same as the directions of the magnetic steel polarized magnetic fields, the magnetic field strength is strengthened, the rotor part is rotated by 1/8 of the tooth pitch by the clockwise moment, and the position relationship between the stator part and the rotor part is shown in fig. 13; each time 8 power-up changes are made, the rotor portion will rotate clockwise through one pitch. When the entire device is cycled on all the way up, the rotor portion will continue to rotate clockwise.
The embodiments are only preferred embodiments of the present invention, and are not limited to the technical solutions of the present invention, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort should be considered to fall within the scope of protection of the patent claims of the present invention.
Claims (7)
1. An axial split-phase hybrid stepper motor, characterized in that: the motor comprises a stator part, a rotor part, a left end cover (10) and a right end cover (1), wherein the left end cover (10) and the right end cover (1) are respectively arranged at two ends of the stator part, and the rotor part is positioned in the stator part; the stator part comprises an inner left stator (13), an outer left stator (9), an inner right stator (14), an outer right stator (6), a first winding ring (7), a first control coil (15), a second winding ring (17) and a second control coil (18), and annular grooves with square cross sections are formed in the inner left stator (13), the outer left stator (9), the inner right stator (14) and the outer right stator (6); the annular groove of the outer left stator (9) and the annular groove of the inner left stator (13) form a first annular cavity, the first winding ring (7) is arranged in the first annular cavity, and the first control coil (15) is wound on the first winding ring (7) to form a first phase current excitation source; the annular groove of the outer right stator (6) and the annular groove of the inner right stator (14) form a second annular cavity, the second winding ring (17) is arranged in the second annular cavity, and the second control coil (18) is wound on the second winding ring (17) to form a second phase current excitation source; the inner left stator (13), the outer left stator (9), the inner right stator (14) and the outer right stator (6) are respectively provided with at least four installation pin holes (19) corresponding to each other in position one by one, and the inner left stator (13), the outer left stator (9), the inner right stator (14) and the outer right stator (6) are fixedly connected through cylindrical pins (12) penetrating through the installation pin holes (19); the inner left stator (13), the outer left stator (9), the inner right stator (14) and the outer right stator (6) are provided with 4n+1 uniformly arranged small teeth, wherein n is a positive integer; the rotor part comprises a left rotor (8), a right rotor (5), a magnetic steel sheet (16), a bearing (2), a shaft sleeve (4) and a rotating shaft (3), wherein the left rotor (8) and the right rotor (5) are provided with uniform small teeth with the same number as the stator part; square through holes are formed in the surfaces, close to each other, of the left rotor (8) and the right rotor (5), square bosses are arranged on the rotating shaft (3), the rotating shaft (3) sequentially penetrates through the left rotor (8), the magnetic steel sheet (16) and the right rotor (5), and the sum of the length of the square through holes above the left rotor (8), the length of the square through holes above the right rotor (5) and the thickness of the magnetic steel sheet is equal to the length of the square bosses above the rotating shaft (3); the rotating shaft (3) is fixed with the left rotor (8) and the right rotor (5) and is aligned with small teeth on the left rotor (8) and the right rotor (5) through square through holes on the square bosses and the left rotor (8) and the right rotor (5); two ends of the rotating shaft (3) are respectively connected to the left end cover (10) and the right end cover (1) through bearings (2), two shaft sleeves (4) are sleeved on the rotating shaft, one shaft sleeve (4) is sleeved on the rotating shaft between the left end cover (10) and the left rotor, one end of the shaft sleeve (4) is fixedly propped against the left rotor (8), and the other end is fixedly propped against the bearings (2) on the left end cover (10); the other shaft sleeve (4) is sleeved on the rotating shaft (3) between the right end cover (1) and the right rotor (5), one end of the shaft sleeve (4) is firmly propped against the right rotor (5), and the other end is firmly propped against the bearing (2) on the right end cover (1);
the inner left stator (13), the outer left stator (9), the inner right stator (14) and the outer right stator (6) are all formed by processing a whole soft magnetic material, and the left rotor (8) and the right rotor (5) are all formed by processing the whole soft magnetic material;
the inner rings of the inner left stator (13), the outer left stator (9), the inner right stator (14) and the outer right stator (6) are provided with 45 uniformly arranged small teeth, the small teeth on the inner left stator (13) and the small teeth on the outer left stator (9) are staggered by 1/2 tooth pitch, the small teeth on the inner right stator (14) and the small teeth on the outer right stator (6) are staggered by 1/2 tooth pitch, and the small teeth on the inner left stator (13) clockwise exceed the small teeth 1/4 tooth pitch on the inner right stator (14).
2. An axial split-phase hybrid stepper motor as defined in claim 1, wherein: the soft magnetic materials of the inner left stator (13), the outer left stator (9), the inner right stator (14), the outer right stator (6), the left rotor (8) and the right rotor (5) are made of metal soft magnetic materials with high magnetic permeability.
3. An axial split-phase hybrid stepper motor as defined in claim 1, wherein: the outer contour shapes of the inner left stator (13), the outer left stator (9), the inner right stator (14) and the outer right stator (6) are identical.
4. An axial split-phase hybrid stepper motor as defined in claim 1, wherein: the positions of the small teeth on the inner left stator (13), the outer left stator (9), the inner right stator (14) and the outer right stator (6) are precisely positioned in staggered tooth relation through cylindrical pins (12).
5. An axial split-phase hybrid stepper motor as defined in claim 1, wherein: the outer side surfaces of the outer left stator (9) and the outer right stator (6) are provided with notches of left and right coil outlets.
6. An axial split-phase hybrid stepper motor as defined in claim 1, wherein: the left rotor (8) and the right rotor (5) are processed into hollow rings, weight of the left rotor (8) and the right rotor (5) can be further reduced, and the axial length of the inner rings of the left rotor (8) and the right rotor (5) is reduced by lengthening the length of the shaft sleeve (4).
7. An axial split-phase hybrid stepper motor as defined in claim 1, wherein: the magnetic steel sheet (16) is fixed between the left rotor (8) and the right rotor (5), the magnetic steel sheet (16) is axially magnetized, the left side of the magnetic steel sheet (16) is an N pole, and the right side of the magnetic steel sheet is an S pole.
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| CN201910185934.XA CN109756089B (en) | 2019-03-12 | 2019-03-12 | Axial split-phase mixed stepping motor |
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| CN101232230A (en) * | 2007-01-25 | 2008-07-30 | 中国电子科技集团公司第二十一研究所 | Axial direction split-phase biphase (four phase) hybrid type stepping motor |
| CN103812241A (en) * | 2014-03-13 | 2014-05-21 | 山东大学 | Stator permanent magnet mixed stepping motor |
| CN209627188U (en) * | 2019-03-12 | 2019-11-12 | 浙江工业大学 | A kind of axial phase hybrid type stepping motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165121A1 (en) * | 2015-04-17 | 2016-10-20 | 王晓明 | New-type constant-force constant-torque uniform magnetic field induction servo motor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232230A (en) * | 2007-01-25 | 2008-07-30 | 中国电子科技集团公司第二十一研究所 | Axial direction split-phase biphase (four phase) hybrid type stepping motor |
| CN103812241A (en) * | 2014-03-13 | 2014-05-21 | 山东大学 | Stator permanent magnet mixed stepping motor |
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