CN108777208B - Radial quadrupole magnetizing device of sealed magnetic static ring - Google Patents
Radial quadrupole magnetizing device of sealed magnetic static ring Download PDFInfo
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- CN108777208B CN108777208B CN201810536648.9A CN201810536648A CN108777208B CN 108777208 B CN108777208 B CN 108777208B CN 201810536648 A CN201810536648 A CN 201810536648A CN 108777208 B CN108777208 B CN 108777208B
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- H01F13/003—Methods and devices for magnetising permanent magnets
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Abstract
The invention relates to a sealed magnetic static ring radial quadrupole magnetizing device, and belongs to the field of aircraft engines. The magnetizing magnetic pole radial motion devices are uniformly distributed at the top end of the magnetizing device; the magnetic pole is fixed on the magnetizing magnetic pole radial motion device and moves through the magnetizing magnetic pole radial motion device; the motion control device controls the motion device to move in the radial direction, the motion device drives the magnetic poles to move in the radial direction and clamp the magnetic static ring, and then the magnetizing control device, the magnetizing device and the magnetic poles magnetize the magnetic static ring. The invention realizes automation through a control system and a moving device, the magnetic pole clamping magnetic ring is realized by the device and the control, and the repeatability and the consistency of the clamping force and the clamping position are good. The magnetic pole of the convex structure is adopted, so that the magnetic leakage in the magnetizing process is less, the effects of good consistency of the magnetized product and good consistency of the magnetic force value of the product are achieved, and the magnetic sealing device with good consistency of sealing performance is favorably provided.
Description
Technical Field
The invention relates to a sealed magnetic static ring radial quadrupole magnetizing device, in particular to a four-magnetic-pole magnetizing device applied to a magnetic ring of a sealing device of an aircraft engine, and belongs to the field of aircraft engines.
Background
The aeroengine sealing technology, especially the end face sealing technology, the component for providing the contact force is gradually developed into a magnetic ring by a spring and a wave spring, and the application of the magnetic sealing technology in the aeroengine is more and more emphasized. In a magnetic sealing device, the existing magnetic ring providing the coupling force is usually the case of 2 magnetic poles. Along with the improvement of the aeroengine technology, in the field of aeroengine sealing, in order to improve the sealing performance, magnetic rings with 4 magnetic poles are gradually formed abroad, and the magnetic poles can provide better bonding force with better uniformity, so that the sealing performance of the sealing device is guaranteed. In order to realize the localization of the 4-magnetic-pole magnetic ring, the requirement of radial magnetization of 4 magnetic poles is provided in the field of aeroengines.
The prior art magnetizing machines are shown in document 1 (Liuchangzhi, DC dipolar magnetizing machine, China knowledge network data: 44) and document 2 (how to make the magnetizing machine, China knowledge network data: 27). The magnetizing machines described in these documents are mainly operated manually, which is of low automation, and moreover, the manual operation causes problems of poor repeatability of the clamping force and the clamping position of the magnetic pole when clamping the magnetic ring to be magnetized, and possibly poor consistency of the same batch of products. In addition, the ends of the magnetic poles of the magnetizing apparatus described in these documents contacting the magnetic ring are arc surfaces, and reports of magnetic poles having a structure of a shape like a Chinese character 'tu' at one end have not been found yet.
Disclosure of Invention
The invention aims to solve the problems that the existing magnetizing machine mainly depends on manual work, has low automation degree, poor repeated positioning and inconsistent clamping force, and provides a radial quadrupole magnetizing device for a sealed magnetic static ring. The device can magnetize the magnetic ring along the radial direction to form four magnetic poles, and the magnetized magnetic ring has good magnetic induction intensity uniformity and less attenuation along with time. The magnetizing device has less magnetic leakage in the magnetizing process, the magnetized product has good consistency, the product has good magnetic force value consistency, and the magnetic sealing device with good sealing performance consistency is favorably provided.
The purpose of the invention is realized by the technical scheme.
A sealed magnetic static ring radial quadrupole magnetizing device, comprising: the magnetizing device, the magnetizing magnetic pole radial motion device, the magnetic pole, the magnetic static ring, the magnetizing control device and the motion control device;
the magnetizing magnetic pole radial motion devices are uniformly distributed at the top end of the magnetizing device; the magnetic pole is fixed on the magnetizing magnetic pole radial motion device and moves through the magnetizing magnetic pole radial motion device; the motion control device controls the motion device to move in the radial direction, the motion device drives the magnetic poles to move in the radial direction and clamp the magnetic static ring, and then the magnetizing control device, the magnetizing device and the magnetic poles magnetize the magnetic static ring.
The magnetizing magnetic pole radial motion device comprises: preceding baffle, track, slider, lead screw, backplate, motor and bottom plate.
The track is arranged on the bottom plate, the sliding block is arranged on the track, the lead screw is connected with the sliding block through threads, the lead screw is connected with the front baffle and the rear baffle through bearings, the front baffle and the rear baffle are connected with the bottom plate, and the motor is connected with the lead screw. The bottom plate is connected with the circular top plate of the magnetizing device. The slider is connected with the bottom surface of the magnetic pole.
One end of the magnetic pole, which is in contact with the magnetic static ring, is a convex end head which is matched with the magnetic static ring; the other end is a plane end head, and a notch is formed in the middle of the magnetic pole. The bottom surface of the magnetizing magnetic pole is connected with a sliding block of the moving device. The magnetizing magnetic pole is sleeved into the top of the pole column made of the soft magnetic material through a middle notch.
The excircle of the magnetic static ring is provided with a U-shaped groove which is matched with the convex end of the magnetic pole; by adopting the structure, the fit clearance between the magnetizing magnetic pole and the magnetic static ring to be magnetized is as small as possible, so that the magnetic leakage condition is reduced.
The magnetizing control device comprises an input terminal (connected with 220V alternating voltage), a power switch, a current magnitude regulating valve, a voltage magnitude regulating valve, a magnetizing switch and a constant current output end. The magnetizing control device can provide constant current with designed size and is input to the magnetizing device.
The magnetizing device comprises a circular top plate, a cylindrical side wall, a wiring input end, a soft magnetic material pole column, a circular bottom plate and a copper coil. The circular bottom plate and the cylindrical side wall as well as the cylindrical side wall and the circular top plate are connected through bolts to form an outer cover. The outer cover is made of aluminum material. The circular top plate is provided with four circular holes. Four soft magnetic material utmost point post bottom vertical fixation on circular bottom plate, utmost point post material is 1J22, diameter 120mm, two adjacent soft magnetic material utmost point post center distance are 600mm, form the copper coil with the even winding of copper line on the soft magnetic material utmost point post. And winding each pole of the soft magnetic material to form four copper coils. The copper coil is connected with the input end of the wiring. The two opposite soft magnetic material pole columns are in one group, and the magnetic poles generated by each group of soft magnetic material pole columns are consistent and are respectively in an N-level and an S-level. The tops of the four soft magnetic material pole columns extend out through four circular holes of the circle center top plate, the extending length is 100mm, and an extending end is formed. The lead wires of the four copper coils are connected with the wiring input end, and the wiring input end is fixed with the cylindrical side wall. The wiring input end is connected with four pairs of stable current output ends provided by the magnetizing control device.
The motion control device comprises: input, switch, forward motion button, reverse motion button, stop button and output. The input end is connected with a 220V power supply, and the output end is connected with a motor. The output end of the motion control device is connected with the motor. When the forward motion button is pressed, the motion control device sends a signal, the motor rotates to drive the lead screw to rotate, and the lead screw rotates to drive the sliding block to move along the track. The slide block drives the magnetic pole arranged on the slide block to move along the radial direction. The magnetic poles move along the radial direction to clamp the magnetic static ring along the circumferential direction. Pressing the stop button stops the motion.
When the magnetic pole clamps the magnetic static ring, the position of the magnetic static ring is ensured to be opposite to the center line of the convex end of the magnetic pole. In addition, the "protruding" font front end of the magnetic pole that requires to magnetize cooperates well with the "U" shape recess of the quiet ring of magnetism, and the magnetic pole corresponds the cooperation with two planes with the three arc surface of the quiet ring of magnetism promptly: the arc surface, the arc surface and the arc surface of the magnetic pole are sequentially superposed with the arc surface, the arc surface and the arc surface of the magnetic static ring; the plane and the plane of the magnetic pole are superposed with the plane and the plane of the magnetic static ring, so that the clamping is successful.
Therefore, the magnetic pole and the three arc surfaces of the magnetic static ring have the same curvature radius, and the radial size of the plane is the same, so that the surfaces are well attached, the magnetic leakage is as small as possible, and the magnetizing performance is improved.
The magnetic static ring is made of an alnico material and is arranged in the middle of the circular top plate, the magnetic static ring is concentric with the circular top plate as much as possible, the end face of the magnetic static ring is kept horizontal, a magnetic pole position marking line formed by heat treatment of the magnetic static ring is enabled to be opposite to the middle of the end of the convex character of one magnetizing magnetic pole, the forward motion button of the motion control device is started, and the four magnetizing magnetic poles move radially until the end of the convex character of the magnetic pole is well matched with the U-shaped groove of the magnetic static ring.
The input terminal of the magnetizing control device is connected with 220V alternating voltage, a power switch is turned on, a current regulating valve is regulated to be 5A, a magnetizing switch is turned on, and the magnetic static ring is magnetized for minutes. And closing the magnetizing switch, starting a reverse motion button of the motion control device, pressing a stop button after the magnetic static ring is separated from the magnetic pole, taking out the magnetic static ring, and completing the pole magnetizing of the magnetic static ring.
Advantageous effects
The invention relates to a sealed magnetic static ring radial quadrupole magnetizing device, which realizes automation through a control system and a moving device, a magnetic pole clamping magnetic ring is realized by the device and the control, and the repeatability and the consistency of the clamping force and the clamping position are good. The magnetic pole of the convex structure is adopted, so that the magnetic leakage in the magnetizing process is less, the effects of good consistency of the magnetized product and good consistency of the magnetic force value of the product are achieved, and the magnetic sealing device with good consistency of sealing performance is favorably provided.
The invention relates to a radial quadrupole magnetizing device for a sealed magnetic stationary ring, which is provided for the magnetic stationary ring of an aeroengine. In order to reduce magnetic leakage, the invention provides a design technology of the convex front end on the design of the magnetizing magnetic pole, and the convex front end of the magnetizing magnetic pole is well attached to the U-shaped groove of the magnetic static ring through the design. The front end of the magnetizing magnetic pole in the shape of a convex shape is composed of three arc surfaces and two planes, the magnetic static ring in the shape of a U is also composed of three arc surfaces and two planes, the design requirements are that the three arc surfaces of the magnetizing magnetic pole and the magnetic static ring have the same curvature radius, the radial sizes of the planes are the same, 5 surfaces are well attached, the magnetic leakage is enabled to be as small as possible, and the magnetizing performance and effect are improved.
Drawings
FIG. 1 is a schematic structural diagram of a four-pole magnetizing apparatus according to the present invention;
FIG. 2 is a schematic view of a radial motion device of the four-pole magnetizing apparatus of the present invention;
FIG. 3 is a schematic view of the magnetizing pole structure of the four-pole magnetizing apparatus according to the present invention;
FIG. 4 is a schematic view of a four pole magnetic stationary ring of the present invention;
FIG. 5 is a schematic view of a magnetization control device of the four-pole magnetization device according to the present invention;
FIG. 6 is a schematic view of a motion control device of the four-pole magnetizing apparatus of the present invention;
FIG. 7 is a schematic structural view of the "convex" end of the magnetizing pole of the four-pole magnetizing apparatus of the present invention;
FIG. 8 is a schematic view of a U-shaped groove structure of the four-pole magnetic ring of the present invention;
FIG. 9 is a schematic view of a four-pole magnetizing apparatus according to the present invention.
The device comprises a magnetizing device 1, a magnetizing magnetic pole radial motion device 2, a magnetic pole 3, a magnetic static ring 4, a magnetizing control device 5 and a motion control device 6. 11-circular top plate, 12-cylindrical side wall, 13-wiring input end, 14-pole of soft magnetic material, 15-circular bottom plate, 16-copper coil, 21-front baffle, 22-track, 23-slider, 24-lead screw, 25-rear baffle, 26-motor, 27-bottom plate, 50-input terminal, 51-power switch, 52-current size regulating valve, 53-voltage size regulating valve, 54-magnetizing switch, 55-constant current output end, 60-input end, 61-switch, 62-forward motion button, 63-reverse motion button, 64-stop button and 65-output end.
Detailed Description
The invention is further described with reference to the following figures and examples.
Example 1
As shown in figure 1, the invention is composed of a magnetizing device 1, a magnetizing magnetic pole radial motion device 2, a magnetic pole 3, a magnetic static ring 4, a magnetizing control device 5 and a motion control device 6. The magnetizing magnetic pole 3 is connected with the magnetizing magnetic pole radial motion device 2, the magnetizing device 1 is connected with the motion device 2, and the motion control device 6 is connected with the magnetizing magnetic pole radial motion device 2. The magnetizing control device 5 is connected with the magnetizing device 1 and provides constant current for magnetizing. The number of the magnetizing poles is 4.
As shown in fig. 9, the magnetizing apparatus 1 includes a circular top plate 11, a cylindrical side wall 12, four connection input terminals 13, a pole 14 of soft magnetic material, a circular bottom plate 15, a copper coil 16, and four circular holes 17. The circular bottom plate 15 and the cylindrical side wall 12, and the cylindrical side wall 12 and the circular top plate 11 are connected through bolts to form a housing. The bottoms of the four soft magnetic material pole columns 14 are vertically fixed on the circular bottom plate 15, the 4 copper coils 16 are wound on the pole columns 14, and the tops of the four soft magnetic material pole columns 14 extend out through the 4 circular holes 17 of the circular top plate 11 to form extending ends. The 4 copper coils form 4 pairs of terminals connected with the wiring input end 13, and the wiring input end 13 is fixed with the cylindrical side wall 12.
As shown in fig. 2, the magnetizing magnetic pole radial movement device 2 includes a front barrier 21, a rail 22, a slider 23, a lead screw 24, a back barrier 25, a motor 26, and a base plate 27. The track 22 is arranged on the bottom plate 27, the sliding block 23 is arranged on the track 22, the lead screw 24 is in threaded connection with the sliding block 23, the lead screw 24 is connected with the front baffle 21 and the rear baffle 25 through bearings, the front baffle 21 and the rear baffle 25 are connected with the bottom plate 27, and the motor 26 is connected with the lead screw 24.
As shown in fig. 3, one end of the magnetizing pole 3 is a "convex" end 32, the other end is a flat end 31, a middle notch 33, and a bottom 34 thereof.
As shown in fig. 7, the "convex" end 32 of the magnetic pole 3 includes an arc surface 35, an arc surface 36, an arc surface 37, a flat surface 38 and a flat surface 39.
As shown in fig. 4, the magnetic stationary ring 4 forms the initial 4 magnetic poles, two N poles, and two S poles after the heat treatment process is completed. The position 41 of the initial magnetic pole is marked on the outer cylindrical surface of the magnetic stationary ring 4.
As shown in fig. 8, the outer circle of the stationary magnetic ring 4 is provided with a U-shaped groove, the section of the stationary magnetic ring 4 is concave, the concave is formed by three arc surfaces and two planes, the three arc surfaces are an arc surface 44, an arc surface 45 and an arc surface 46, and the two planes are a plane 42 and a plane 43.
As shown in fig. 5, the magnetization control device 5 is composed of an input terminal 50 (connected to 220V ac voltage), a power switch 51, a current magnitude adjustment valve 52, a voltage magnitude adjustment valve 53, a magnetization switch 54, and a constant current output terminal 55.
As shown in fig. 6, the motion control device 6 includes: input 60, switch 61, forward motion button 62, reverse motion button 63, stop button 64, output 65.
The specific implementation process of the sealed magnetic static ring radial quadrupole magnetizing device is as follows:
the bottom plate 27 of the magnetizing magnetic pole radial motion device 2 is connected with the circular top plate 11 of the magnetizing device 1. The magnetizing magnetic pole 3 is sleeved on the top of the soft magnetic material pole 14 of the magnetizing device 1 through a middle slotted opening 33. The slider 23 of the magnetizing magnetic pole radial movement device 2 is connected with the bottom surface 34 of the magnetic pole 3.
The input end 60 of the motion control device 6 is connected with a 220V alternating current power supply, and the output end 64 is connected with the motor 26 of the motion device 2.
The magnetic static ring 4 is arranged in the middle of the circular top plate 11 of the magnetizing device 1, the magnetic static ring 4 is concentric with the circular top plate 11 as much as possible, the end face of the magnetic static ring 4 is kept horizontal, and an initial magnetic pole position mark line 41 formed by the heat treatment process of the magnetic static ring 4 is opposite to the middle of the convex end 32 of one magnetizing magnetic pole 3.
When a switch 61 of the motion control device 6 is pressed and a forward motion button 62 is pressed, the motion control device 6 sends a signal, the motor 26 rotates to drive the lead screw 24 to rotate, and the lead screw 24 rotates to drive the slide block 23 to move along the track 22. The slide 23 carries the magnetic pole 3 mounted thereon in a radial direction. The magnetic poles 3 move along the radial direction to clamp the magnetic static ring 4 along the circumferential direction. The clamping requirement is that the front end of the shape of the convex character of the magnetizing magnetic pole 3 is well matched with the U-shaped groove of the magnetic static ring 4, namely the magnetic pole 3 and the three arc surfaces of the magnetic static ring 4 are correspondingly matched with two planes: the arc surface 35, the arc surface 36 and the arc surface 37 of the magnetic pole 3 are sequentially overlapped with the arc surface 44, the arc surface 45 and the arc surface 46 of the magnetic stationary ring 4; the planes 38 and 39 of the magnetic poles 3 coincide with the planes 43 and 42 of the magnetic stationary ring 4, and the clamping is successful. After confirming that the grip is successful, the stop button 64 is pressed to stop the movement. And finishing the magnetizing clamping process.
The input terminal 50 of the magnetizing control device 5 is connected with 220V alternating voltage, the constant current output terminal 55 is connected with the wiring input terminal 13 of the magnetizing device 1, the power switch 51 of the magnetizing control device 5 is opened, the current magnitude regulating valve 52 is opened, and the magnitude of the regulating current is 5A. And (3) turning on the magnetizing switch 54 to allow the 4 magnetizing coils 16 to pass through, wherein the coils generate magnetic fields, so that the four poles 14 form 4 magnetic poles, two N poles and two S poles, and the generated magnetic fields are guided by the 4 magnetic poles 3 to radially magnetize the magnetic static ring 4 for 3 minutes. After the time is reached, the magnetizing switch 54 is closed, the reverse motion button 63 of the motion control device 6 is started, the magnetic pole 3 moves reversely, the stop button 64 is pressed after the magnetic static ring 4 is separated from the magnetic pole 3, the magnetic static ring 4 is taken out, and the 4 poles of the magnetic static ring 4 are magnetized.
After magnetizing, the magnetic static ring 4 is detected by adopting a special tool and equipment so as to verify the consistency of the magnetic force or the consistency of the magnetizing effect of the same batch of magnetic static rings.
As the three arc surfaces of the magnetic static ring 4 and the magnetizing magnetic pole 3 have the same curvature radius and the same plane radial dimension, 5 surfaces of the magnetic static ring and the magnetizing magnetic pole are well jointed, the magnetic flux leakage is as small as possible, the magnetizing effect is improved, and the consistency of products is ensured.
Claims (7)
1. The utility model provides a radial quadrupole of sealed magnetism quiet ring magnetization device which characterized in that: the method comprises the following steps: the device comprises a magnetizing device (1), a magnetizing magnetic pole radial motion device (2), a magnetic pole (3), a magnetic static ring (4), a magnetizing control device (5) and a motion control device (6);
the magnetizing magnetic pole radial motion devices (2) are uniformly distributed at the top end of the magnetizing device (1); the magnetic pole (3) is fixed on the magnetizing magnetic pole radial motion device (2) and moves through the magnetizing magnetic pole radial motion device (2); the motion control device (6) controls the motion device (2) to move radially, the motion device (2) drives the magnetic pole (3) to move radially and clamp the magnetic static ring (4), and then the magnetizing control device (5), the magnetizing device (1) and the magnetic pole (3) magnetize the magnetic static ring (4);
the magnetizing device (1) comprises a circular top plate (11), a cylindrical side wall (12), a wiring input end (13), a soft magnetic material pole column (14), a circular bottom plate (15) and a copper coil (16); the circular bottom plate (15) and the cylindrical side wall (12) as well as the cylindrical side wall (12) and the circular top plate (11) are connected through bolts to form an outer cover; the outer cover is made of aluminum material; the round top plate (11) is provided with 4 round holes (17); the bottoms of four soft magnetic material pole columns (14) are vertically fixed on a circular bottom plate (15), the pole columns are made of 1J22, the diameter of each pole column is 120mm, the center distance between every two adjacent soft magnetic material pole columns is 600mm, and copper wires are uniformly wound on the soft magnetic material pole columns to form copper coils (16); each pole of the soft magnetic material is wound by 60 turns to form 4 copper coils (16); the copper coil is connected with a wiring input end (13); the two opposite soft magnetic material pole columns (14) form a group, and the magnetic poles generated by each group of soft magnetic material pole columns (14) are consistent and are respectively N-level and S-level; the tops of the four soft magnetic material poles (14) extend out through 4 circular holes (17) of the circular top plate (11), the extending length is 100mm, and an extending end is formed; the lead wires of the 4 copper coils are connected with a wiring input end (13), and the wiring input end (13) is fixed with the cylindrical side wall (12); the wiring input end (13) is connected with 4 pairs of stable current output ends (55) provided by the magnetizing control device (5).
2. A sealed magnetic static ring radial quadrupole magnetizing apparatus according to claim 1, wherein: the magnetizing magnetic pole radial movement device (2) comprises: the device comprises a front baffle (21), a track (22), a slide block (23), a screw rod (24), a rear baffle (25), a motor (26) and a bottom plate (27);
the track (22) is installed on the bottom plate (27), the sliding block (23) is installed on the track (22), the lead screw (24) is connected with the sliding block (23) through threads, the lead screw (24) is connected with the front baffle (21) and the rear baffle (25) through bearings, the front baffle (21) and the rear baffle (25) are connected with the bottom plate (27), and the motor (26) is connected with the lead screw (24); the bottom plate (27) is connected with a circular top plate (11) of the magnetizing device (1); the sliding block (23) is connected with the bottom surface (34) of the magnetic pole (3).
3. A sealed magnetic static ring radial quadrupole magnetizing apparatus according to claim 1, wherein: one end of the magnetic pole (3) contacting the magnetic static ring (4) is a convex end (32) matched with the magnetic static ring (4); the other end is a plane end head (31), and a notch (33) is formed in the middle of the magnetic pole (3); the bottom surface (34) of the magnetic pole (3) is connected with a sliding block (23) of the moving device; the magnetic pole (3) is sleeved on the top of the pole column made of the soft magnetic material through a middle slotted opening (33).
4. A sealed magnetic static ring radial quadrupole magnetizing apparatus according to claim 1, wherein: the magnetizing control device (5) comprises an input terminal (50) connected with 220V alternating voltage, a power switch (51), a current magnitude regulating valve (52), a voltage magnitude regulating valve (53), a magnetizing switch (54) and a constant current output end (55); the magnetizing control device (5) can provide constant current with designed size and is input to the magnetizing device.
5. A sealed magnetic static ring radial quadrupole magnetizing apparatus according to claim 3, wherein: the motion control device (6) comprises: an input end (60), a switch (61), a forward motion button (62), a reverse motion button (63), a stop button (64) and an output end (65); the input end (60) is connected with a 220V power supply, and the output end is connected with the motor (26); the output end (65) of the motion control device (6) is connected with the motor (26); a forward motion button (62) is pressed, a motion control device (6) sends a signal, a motor (26) rotates to drive a lead screw (24) to rotate, and the lead screw (24) rotates to drive a sliding block (23) to move along a track (22); the slide block (23) drives the magnetic pole (3) arranged on the slide block to move along the radial direction; the magnetic pole (3) moves along the radial direction and clamps the magnetic static ring (4) along the circumferential direction; pressing a stop button (64) to stop the movement;
when the magnetic pole (3) clamps the magnetic static ring (4), the magnetic pole position marking line (41) of the magnetic static ring (4) is ensured to be opposite to the central line of the convex-shaped end (32) of the magnetic pole (3); in addition, the front end of the shape of the convex character of the magnetic pole (3) is required to be well matched with the U-shaped groove of the magnetic static ring (4), namely the magnetic pole (3) is correspondingly matched with three circular arc surfaces and two planes of the magnetic static ring (4): the arc surface (35), the arc surface (36) and the arc surface (37) of the magnetic pole (3) are sequentially superposed with the arc surface (44), the arc surface (45) and the arc surface (46) of the magnetic static ring (4); the planes (38, 39) of the magnetic poles (3) are superposed with the planes (43, 42) of the magnetic static ring (4), so that the clamping is successful;
therefore, the three arc surfaces of the magnetic pole (3) and the magnetic static ring (4) have the same curvature radius, and the radial size of the plane is the same, so that the surfaces are well attached, the magnetic leakage is small as much as possible, and the magnetizing performance is improved.
6. A sealed magnetic static ring radial quadrupole magnetizing apparatus according to claim 3, wherein: the excircle of the magnetic static ring (4) is provided with a U-shaped groove (47) which is matched with the convex end of the magnetic pole (3); by adopting the structure, the fit clearance between the magnetic pole (3) and the magnetic static ring (4) to be magnetized is reduced, thereby reducing the occurrence of magnetic leakage.
7. A sealed magnetic static ring radial quadrupole magnetizing apparatus according to claims 1-6, wherein: the magnetizing method of the four-pole magnetizing device comprises the following steps: the magnetic static ring (4) is arranged in the middle of the circular top plate (11), the magnetic static ring (4) is concentric with the circular top plate (11), the end face of the magnetic static ring (4) is kept horizontal, a magnetic pole position marking line (41) formed by heat treatment of the magnetic static ring (4) is opposite to the middle of a convex end (32) of a magnetizing magnetic pole, a forward movement button (62) of a movement control device (6) is started, and 4 magnetic poles (3) move radially until the convex end (32) of the magnetic pole (3) is well matched with a U-shaped groove of the magnetic static ring (4);
an input terminal (50) of the magnetizing control device (5) is connected with 220V alternating voltage, a power switch (51) is turned on, a current size regulating valve (52) is regulated to be 5A, a magnetizing switch (54) is turned on, and the magnetic static ring (4) is magnetized for 3 minutes; and (3) closing the magnetizing switch (54), starting a reverse motion button (63) of the motion control device (6), pressing a stop button (64) after the magnetic static ring (4) is separated from the magnetic pole (3), taking out the magnetic static ring (4), and magnetizing the 4 poles of the magnetic static ring (4).
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| CN108777208A (en) | 2018-11-09 |
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