CN110453322B - Separated permanent magnet suspension bearing structure for spinning spindle - Google Patents
Separated permanent magnet suspension bearing structure for spinning spindle Download PDFInfo
- Publication number
- CN110453322B CN110453322B CN201910805774.4A CN201910805774A CN110453322B CN 110453322 B CN110453322 B CN 110453322B CN 201910805774 A CN201910805774 A CN 201910805774A CN 110453322 B CN110453322 B CN 110453322B
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- spindle
- radial
- magnetic ring
- gasket
- foot
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- 239000000725 suspension Substances 0.000 title claims abstract description 52
- 238000009987 spinning Methods 0.000 title claims abstract description 19
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
- D01H7/02—Spinning or twisting arrangements for imparting permanent twist
- D01H7/04—Spindles
- D01H7/045—Spindles provided with flexible mounting elements for damping vibration or noise, or for avoiding or reducing out-of-balance forces due to rotation
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
- D01H7/02—Spinning or twisting arrangements for imparting permanent twist
- D01H7/04—Spindles
- D01H7/08—Mounting arrangements
- D01H7/12—Bolsters; Bearings
Abstract
The invention relates to a separated permanent magnet suspension bearing structure for spinning spindles, which belongs to the technical field of bearing preparation and structurally comprises a spindle rod, a spindle disc, an outer sleeve and spindle feet, wherein radial bearings and axial bearing structures are arranged in the spindle disc and the spindle feet, the structure is novel, the spindle disc and the spindle rod are driven by a motor to rotate under a support structure of the outer sleeve magnetic suspension bearing, an upper spindle disc magnetic ring and a lower spindle disc magnetic ring axially generate magnetic fields, the changing magnetic fields generate axial acting force on a spindle, so that the effect of balancing external force applied to the spindle is achieved, and the magnetic fields generated between a first small radial magnetic ring and a large magnetic ring and between a second small radial magnetic ring and the large magnetic ring generate radial acting force on the spindle.
Description
Technical Field
The invention belongs to the technical field of bearing preparation, relates to a magnetic suspension bearing structure, and particularly relates to a separated permanent magnet suspension bearing structure for a spinning spindle.
Background
At present, the bearing industry is the basic industry of manufacturing industry, and is also an important component matched with the national manufacturing industry of important equipment and precise equipment. The magnetic suspension technology has tremendous development in the bearing field and occupies an extremely important market share. The advantages of the common high-speed bearing are: the precision is high, the surface roughness is small, the gap is small, and the volume is small; the defects are that: when the high-speed bearing is high in load, the working temperature is high, the failure rate is high, the service life is short, and the power consumption is high; the corresponding magnetic suspension bearing has great development prospect and economic value due to a series of characteristics of low noise, environmental protection, high rotating speed, low friction and the like, and the spindle is driven by the motor to automatically suspend so as to realize stable friction-free operation, and the speed of hundreds of thousands of revolutions can be achieved without lubrication. At present, an independent magnetic bearing is adopted for restraining or adjusting a motor spindle, the adjusting precision and the sensitivity are not high, the structural size is large, and the magnetic bearing is used as a spinning spindle supporting structure, so that the spindle is easy to rotate at a low speed, low in adjusting precision and large in noise, the additional dynamic load of the spindle is increased, the spindle is poor in stability, the service life is low, and the working efficiency is influenced.
Disclosure of Invention
Aiming at the defects of low rotating speed, low adjusting precision, large noise and the like of the spindle of the existing spinning spindle supporting structure, the invention provides a separated permanent magnet suspension bearing structure for a spinning spindle, which adopts a symmetrical structure to form an axial radial symmetrical magnetic bearing, thereby greatly reducing the volume of the whole structure, being more convenient for adjusting the spindle position, achieving the effect of balancing the external force applied to the spindle and enabling the spindle to work more stably and at a higher speed.
The technical scheme of the invention is as follows: a separated permanent magnet suspension bearing structure for spinning spindles comprises a spindle rod, a spindle disc arranged on the spindle rod, an outer sleeve, spindle feet, spindle foot blocks and a sleeve; the method is characterized in that: a group of radial magnetic suspension bearings and a group of axial magnetic suspension bearings are arranged between the spindle disc and the outer sleeve; the radial magnetic suspension bearing consists of a first radial small magnetic ring, a first radial large gasket and a first radial small gasket; the first radial large magnetic ring and the first radial large gasket are fixedly arranged on the inner wall of the spindle disk, and the first radial large magnetic ring is axially positioned and fixed through the first radial large gasket; the first radial small magnetic ring and the first radial small gasket are both arranged on an outer sleeve in the spindle disk, the first radial small magnetic ring is axially limited and fixed through the first radial small gasket, a suspension gap is formed between the first radial small magnetic ring and the first radial large magnetic ring in the radial direction, and a suspension gap is formed between the first radial large gasket and the first radial small gasket in the radial direction and in the axial direction; the axial magnetic suspension bearing consists of an upper spindle disc magnetic ring and a lower spindle disc magnetic ring; the upper spindle disc magnetic ring is fixedly arranged on the right end face of the spindle disc, the lower spindle disc magnetic ring is fixedly arranged on the left end face of the outer sleeve, and a suspension gap is formed between the upper spindle disc magnetic ring and the lower spindle disc magnetic ring in the axial direction; a group of spindle foot magnetic suspension bearing supporting structures are arranged between the spindle feet and the spindle foot blocks, and each supporting structure consists of a second radial large gasket, a second radial large magnetic ring, a second radial small gasket, a second radial small magnetic ring and an axial magnetic ring; the second radial large magnetic ring and the second radial large gasket are both fixed on the inner wall of the spindle foot, the second radial large magnetic ring is axially positioned through the second radial large gasket, the second radial small gasket and the second radial small magnetic ring are fixedly sleeved on the spindle rod, the second radial small magnetic ring is axially positioned through the second radial small gasket, the second radial small gasket is axially positioned through the sleeve, the second radial small magnetic ring and the second radial large magnetic ring form a suspension gap, a spindle bottom is arranged between the spindle foot block and the spindle foot, the axial magnetic ring is fixedly arranged on the end face of the spindle bottom, and a suspension gap is formed between the axial magnetic ring and the axial direction of the second radial large magnetic ring.
The spindle rod is provided with taper from the left end to the middle, and the diameter of the spindle rod is gradually increased; the middle to the right end of the spindle rod is of an equal-diameter structure.
The outer sleeve is provided with an external thread at the right end, an internal thread is arranged in a hole at the left end of the spindle foot, the outer sleeve is in threaded connection with the spindle foot, a second tightening nut is arranged on the outer sleeve, and the outer sleeve is fixedly connected with the spindle foot through the second tightening nut.
The outer part of the spindle foot block is provided with external threads, the right hole of the spindle foot is internally provided with internal threads, and the spindle foot block is in threaded connection with the spindle foot.
The spindle bottom is in transition fit with the spindle rod, external threads are arranged at the bottom of the spindle rod, and the spindle bottom is axially fixed on the spindle rod through the shaft end and the tightening nut.
The sleeve and the spindle rod form interference tight fit, and the outer sleeve is sleeved outside the sleeve in a hollow mode.
The outer contour of the spindle disc is provided with a belt groove, the spindle disc is connected with an external motor through a belt in the belt groove, the left side of the spindle disc is provided with a taper hole, and the spindle disc is in interference tight fit connection with the spindle rod through the taper hole.
The beneficial effects of the invention are as follows: the invention provides a separated permanent magnet suspension bearing structure for a spinning spindle, which is novel in structure and clear in working principle, structurally comprises a spindle rod, a spindle disc, an outer sleeve and spindle feet which are connected, wherein radial bearings and axial bearing structures are arranged in the spindle disc and the spindle feet, the spindle disc is driven by a motor to rotate, the spindle disc and the spindle rod start to rotate under the support structure of the outer sleeve magnetic suspension bearing, an upper spindle disc magnetic ring and a lower spindle disc magnetic ring axially generate magnetic fields, the changing magnetic fields generate axial acting force on a spindle, and therefore the effect of balancing external force applied to the spindle is achieved.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the present invention.
In the figure: spindle rod 1, spindle disc 2, outer sleeve 3, spindle foot 4, spindle foot block 5, sleeve 6, first radial small magnetic ring 7, first radial large magnetic ring 8, first radial large gasket 9, first radial small gasket 10, upper spindle disc magnetic ring 11, lower spindle disc magnetic ring 12, second radial small gasket 13, second radial large gasket 14, second radial small magnetic ring 15, second radial large magnetic ring 16, axial magnetic ring 17, spindle bottom 18, first tightening nut 19, second tightening nut 20, shaft end tightening nut 21.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-2, a split permanent magnet suspension bearing structure for a spinning spindle comprises a spindle rod 1, a spindle disc 2 arranged on the spindle rod 1, an outer sleeve 3, spindle feet 4, spindle foot blocks 5 and a sleeve 6; a group of radial magnetic suspension bearings and a group of axial magnetic suspension bearings are arranged between the spindle disc 2 and the outer sleeve 3; the radial magnetic suspension bearing consists of a first radial small magnetic ring 7, a first radial large magnetic ring 8, a first radial large gasket 9 and a first radial small gasket 10; the first radial large magnetic ring 8 and the first radial large gasket 9 are fixedly arranged on the inner wall of the spindle disk 2, and the first radial large magnetic ring 8 is axially positioned and fixed through the first radial large gasket 9; the first radial small magnetic ring 7 and the first radial small gasket 10 are both arranged on the outer sleeve 3 in the spindle disk 2, the first radial small magnetic ring 7 is axially limited and fixed through the first radial small gasket 10, a suspension gap is formed between the first radial small magnetic ring 7 and the first radial large magnetic ring 8 in the radial direction, and a suspension gap is formed between the first radial large gasket 9 and the first radial small gasket 10 in the radial direction and the axial direction; the axial magnetic suspension bearing consists of an upper spindle disk magnetic ring 11 and a lower spindle disk magnetic ring 12; the upper spindle disk magnetic ring 11 is fixedly arranged on the right end surface of the spindle disk 2, the lower spindle disk magnetic ring 12 is fixedly arranged on the left end surface of the outer sleeve 3, and a suspension gap is formed between the upper spindle disk magnetic ring 11 and the lower spindle disk magnetic ring 12 in the axial direction; a group of spindle foot magnetic suspension bearing supporting structures are arranged between the spindle feet 4 and the spindle foot blocks 5, and each supporting structure consists of a second radial large gasket 14, a second radial large magnetic ring 16, a second radial small gasket 13, a second radial small magnetic ring 15 and an axial magnetic ring 17; the second radial large magnetic ring 16 and the second radial large gasket 14 are both fixed on the inner wall of the spindle foot 4, the second radial large magnetic ring 16 is axially positioned through the second radial large gasket 14, the second radial small gasket 13 and the second radial small magnetic ring 15 are fixedly sleeved on the spindle rod 1, the second radial small magnetic ring 15 is axially positioned through the second radial small gasket 13, the second radial small gasket 13 is axially positioned through the sleeve 6, the second radial small magnetic ring 15 and the second radial large magnetic ring 16 form a suspension gap, a spindle bottom 18 is arranged between the spindle foot block 5 and the spindle foot 4, the axial magnetic ring 17 is fixedly arranged on the end face of the spindle bottom 18, and a suspension gap is formed between the axial magnetic ring 17 and the axial direction of the second radial large magnetic ring 16.
As shown in fig. 1-2, a split permanent magnet suspension bearing structure for spinning spindles, wherein the spindle rod is tapered from the left end to the middle, and the diameter of the spindle rod is gradually increased; the middle to the right end of the spindle rod is of an equal-diameter structure; the right end of the outer sleeve 3 is provided with external threads, the hole at the left end of the spindle foot 4 is internally provided with internal threads, the outer sleeve 3 is in threaded connection with the spindle foot 4, the outer sleeve 3 is provided with a second tightening nut 20, and the outer sleeve 3 is fixedly connected with the spindle foot 4 through the second tightening nut 20; the outer part of the spindle foot block 5 is provided with external threads, the right hole of the spindle foot 4 is internally provided with internal threads, and the spindle foot block 5 is in threaded connection with the spindle foot 4; the ingot bottom 18 is in transition fit with the ingot rod 1, external threads are arranged at the bottom of the ingot rod 1, and the ingot bottom 18 is axially fixed on the ingot rod 1 through a shaft end and a tightening nut 21; the sleeve 6 and the spindle rod 1 form interference tight fit, and the outer sleeve 3 is sleeved outside the sleeve 6 in an empty mode; the outer contour of the spindle disc 2 is provided with a belt groove, the spindle disc 2 is connected with an external motor through a belt in the belt groove, the left side of the spindle disc 2 is provided with a taper hole, and the spindle disc 2 is in interference tight fit connection with the spindle rod 1 through the taper hole.
As shown in fig. 1-2, a separate permanent magnet suspension bearing structure for a spinning spindle works as follows: the spindle disc is in driving connection with an external motor through a belt in the belt groove, the motor drives the spindle disc to rotate, the spindle disc is in interference tight fit connection with the spindle rod, the spindle disc drives the spindle rod to start rotating, and the sleeve, the second radial small washer, the second radial small magnetic ring and the spindle bottom which are assembled on the spindle rod synchronously rotate; after the rotating speed is increased, the upper spindle disc magnetic ring and the lower spindle disc magnetic ring generate magnetic fields, the changed magnetic fields generate axial acting force on the spindle, the effect of balancing the external force applied to the spindle rod is achieved, and the magnetic fields generated between the first radial small magnetic rings and the first radial large magnetic rings and between the second radial small magnetic rings and the second radial large magnetic rings generate radial acting force on the spindle rod, so that the spindle rod is free from contact and friction when rotating at high speed. During practical operation, the spindle rod rotates at high speed, the bobbin with the outer side in tight fit with the spindle rod starts to rotate, and two or more strands of single yarns are twisted to form one strand. In the traditional spindle supporting structure, roller bearings are arranged between a spindle disc and an outer sleeve to form rolling fit, a spindle and a spindle bottom are in sliding fit, vibration is generated during working, noise is large, lubricating oil is required to be added, a coil spring damper is arranged, the spindle supporting structure is complex, cost is increased, meanwhile, the rotating speed of the spindle is limited, the spindle is in a common type of ten thousand-thousand rotation, and the spindle is in high-speed type of two-play and has low working efficiency. The invention changes sliding friction between spindle and spindle foot into air friction by the action of permanent magnetic bearing, without contact, friction, lubrication, shock absorption and other measures, the structure is simpler, the rotating speed is improved, the rotating speed of spindle is improved from more than three thousand to twenty thousand, twisting efficiency is improved, twisting quality is also greatly improved, equipment cost is reduced, and working efficiency is improved.
Claims (7)
1. A separated permanent magnet suspension bearing structure for a spinning spindle comprises a spindle rod (1), a spindle disc (2), an outer sleeve (3), spindle feet (4), spindle foot blocks (5) and a sleeve (6) which are arranged on the spindle rod (1); the method is characterized in that: a group of radial magnetic suspension bearings and a group of axial magnetic suspension bearings are arranged between the spindle disc (2) and the outer sleeve (3); the radial magnetic suspension bearing consists of a first radial small magnetic ring (7), a first radial large magnetic ring (8), a first radial large gasket (9) and a first radial small gasket (10); the first radial large magnetic ring (8) and the first radial large gasket (9) are fixedly arranged on the inner wall of the spindle disk (2), and the first radial large magnetic ring (8) is axially positioned and fixed through the first radial large gasket (9); the first radial small magnetic ring (7) and the first radial small gasket (10) are both arranged on an outer sleeve (3) in the spindle disk (2), the first radial small magnetic ring (7) is axially limited and fixed through the first radial small gasket (10), a suspension gap is formed between the first radial small magnetic ring (7) and the first radial large magnetic ring (8) in the radial direction, and a suspension gap is formed between the first radial large gasket (9) and the first radial small gasket (10) in the radial direction and the axial direction; the axial magnetic suspension bearing consists of an upper spindle disc magnetic ring (11) and a lower spindle disc magnetic ring (12); the upper spindle disk magnetic ring (11) is fixedly arranged on the right end face of the spindle disk (2), the lower spindle disk magnetic ring (12) is fixedly arranged on the left end face of the outer sleeve (3), and a suspension gap is formed between the upper spindle disk magnetic ring (11) and the lower spindle disk magnetic ring (12) in the axial direction; a group of spindle foot magnetic suspension bearing supporting structures are arranged between the spindle feet (4) and the spindle foot blocks (5), and each supporting structure consists of a second radial large gasket (14), a second radial large magnetic ring (16), a second radial small gasket (13), a second radial small magnetic ring (15) and an axial magnetic ring (17); the second radial large magnetic ring (16) and the second radial large gasket (14) are both fixed on the inner wall of the spindle foot (4), the second radial large magnetic ring (16) is axially positioned through the second radial large gasket (14), the second radial small gasket (13) and the second radial small magnetic ring (15) are fixedly sleeved on the spindle rod (1), the second radial small magnetic ring (15) is axially positioned through the second radial small gasket (13), the second radial small gasket (13) is axially positioned through the sleeve (6), a suspension gap is formed between the second radial small magnetic ring (15) and the second radial large magnetic ring (16), a spindle bottom (18) is arranged between the spindle foot block (5) and the spindle foot (4), the axial magnetic ring (17) is fixedly arranged on the end face of the spindle bottom (18), and a suspension gap is formed between the axial magnetic ring (17) and the second radial large magnetic ring (16) in the axial direction.
2. A split permanent magnet suspension bearing structure for a spinning spindle according to claim 1, characterized in that: the spindle rod is provided with taper from the left end to the middle, and the diameter of the spindle rod is gradually increased; the middle to the right end of the spindle rod is of an equal-diameter structure.
3. A split permanent magnet suspension bearing structure for a spinning spindle according to claim 1, characterized in that: the outer sleeve (3) right-hand member is equipped with the external screw thread, is equipped with the internal screw thread in spindle foot (4) left end hole, outer sleeve (3) and spindle foot (4) threaded connection are equipped with second and close nut (20) on outer sleeve (3), make outer sleeve (3) and spindle foot (4) be connected fixedly through second and close nut (20).
4. A split permanent magnet suspension bearing structure for a spinning spindle according to claim 1, characterized in that: the spindle foot block (5) is externally provided with external threads, the right hole of the spindle foot (4) is internally provided with internal threads, and the spindle foot block (5) is in threaded connection with the spindle foot (4).
5. A split permanent magnet suspension bearing structure for a spinning spindle according to claim 1, characterized in that: the spindle bottom (18) is in transition fit with the spindle rod (1), external threads are arranged at the bottom of the spindle rod (1), and the spindle bottom (18) is axially fixed on the spindle rod (1) through a shaft end tightening nut (21).
6. A split permanent magnet suspension bearing structure for a spinning spindle according to claim 1, characterized in that: the sleeve (6) and the spindle blade (1) form interference tight fit, and the outer sleeve (3) is sleeved outside the sleeve (6).
7. A split permanent magnet suspension bearing structure for a spinning spindle according to claim 1, characterized in that: the spindle disk (2) is provided with a belt groove on the outer contour, the spindle disk (2) is connected with an external motor through a belt in the belt groove, the left side of the spindle disk (2) is provided with a taper hole, and the spindle disk (2) is in interference tight fit connection with the spindle rod (1) through the taper hole.
Priority Applications (1)
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CN201910805774.4A CN110453322B (en) | 2019-08-29 | 2019-08-29 | Separated permanent magnet suspension bearing structure for spinning spindle |
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CN201910805774.4A CN110453322B (en) | 2019-08-29 | 2019-08-29 | Separated permanent magnet suspension bearing structure for spinning spindle |
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CN110453322A CN110453322A (en) | 2019-11-15 |
CN110453322B true CN110453322B (en) | 2024-03-08 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110670183B (en) * | 2019-11-21 | 2024-04-02 | 扬州大学 | Mixed magnetic suspension bearing for driving spindle of rotor ultra-high speed motor |
CN111270358A (en) * | 2020-03-25 | 2020-06-12 | 如皋市丁堰纺织有限公司 | Spinning frame superspeed twisting winding device |
CN112391707A (en) * | 2020-11-06 | 2021-02-23 | 衡阳新新纺织机械有限公司 | Separated permanent magnetic suspension bearing structure for spinning spindle |
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CN210826494U (en) * | 2019-08-29 | 2020-06-23 | 扬州大学 | Separated permanent magnetic suspension bearing structure for spinning spindle |
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2019
- 2019-08-29 CN CN201910805774.4A patent/CN110453322B/en active Active
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US3747998A (en) * | 1971-02-23 | 1973-07-24 | Siemens Ag | High speed magnetic shaft bearing |
CN2036959U (en) * | 1988-04-29 | 1989-05-03 | 林光腾 | Magnetic suspension spindle of spinning machine |
CN1052342A (en) * | 1989-12-09 | 1991-06-19 | 吉海玲 | Electromagnetic suspended spindle and calutron |
JPH0441720A (en) * | 1990-06-04 | 1992-02-12 | Teijin Seiki Co Ltd | Overhung type spindle |
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