CN104779774A - Magnetic liquid micro torque difference buffering device - Google Patents
Magnetic liquid micro torque difference buffering device Download PDFInfo
- Publication number
- CN104779774A CN104779774A CN201510195628.6A CN201510195628A CN104779774A CN 104779774 A CN104779774 A CN 104779774A CN 201510195628 A CN201510195628 A CN 201510195628A CN 104779774 A CN104779774 A CN 104779774A
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- rotor
- magnetic liquid
- buffer
- magnetic
- stator
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Abstract
The invention relates to a magnetic liquid micro torque difference buffering device. A cylindrical surface and two end surfaces of a rotor are used as working surfaces, and under the condition that the size of the rotor is not increased, the outer surface of the rotor is effectively utilized and the working area of the rotor is increased. The magnetic liquid micro torque difference buffering device consists of excitation coils, magnetic liquid, a back end cover, a rotor, a shell, magnetism-isolating rings, screws, sealing rings, bearings, covering covers and a front end cover, wherein the shell and the two end covers form a stator of a buffer; the sealing rings are mounted between the rotor and the stator; a cavity between the rotor and the stator is filled with magnetic liquid; the magnetism-isolating rings are mounted between the end covers and the shell; the excitation coils are wound inside the end covers; the two groups of excitation coils generate magnetic fields in opposite directions; after electrification, the rotor of the buffer does magnetic induction line cutting movement. By adopting the structure, the cylindrical surface and the two end surfaces of the rotor are used as the working surfaces, so that the working area of the rotor of the buffer is significantly increased, and the defect of a low shear yield stress of the magnetic liquid is overcome.
Description
Technical field
The present invention relates to a kind of buffer, especially relate to the micro-difference in torque buffer unit of magnetic liquid.
Background technology
But multiple engineering fields such as magnetic liquid shakes at vibration damping with its superior rheological property, machine driving, Precision Machining and sealing have broad application prospects, wherein applied magnetic liquid development buffer devices is an important branch of magnetic liquid application technical research.
At present, magnetic liquid buffer can be divided into orthoscopic magnetic liquid buffer and rotary-type magnetic liquid buffer by its working method.Comparatively early, the research of its structural design, mechanical model is comparatively ripe for the research of orthoscopic magnetic liquid buffer.But some application scenario, the speed change of microelectronic product as higher in required precision and drive system etc., require that buffer can provide the torque-controllable of continuous rotation, therefore, the research of rotary-type magnetic liquid buffer has important application value.
Rotary-type magnetic liquid buffer carries out work by being filled in the controlled magnetic liquid of yield stress between shell and rotor, and the work area of rotor is one of principal element affecting bumper property.At present, rotary-type magnetic liquid buffer is mainly with two end faces of rotor as working face, and the buffer of this kind of structure has larger radial dimension usually.Have some rotary-type magnetic liquid buffer using the face of cylinder of rotor as working face, although increase the output torque that rotor axial and radial dimension all can increase buffer, this kind of structure fails to utilize the end face of rotor.In order to obtain larger buffering moment, occurred polydisc chip magnetic liquid buffer, this kind of buffer is utilize the end face of rotor as working face equally, and during work, the end face of multiple work disc interacts with stator respectively, to obtain larger buffering moment.In order to make full use of the outer surface of rotor, while raising bumper property, not increasing the complexity of its structure, devising novel rotary-type magnetic liquid buffer structure, add the working face of buffer.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of when not increasing rotor volume, efficiently utilize the outer surface of rotor, add the work area of rotor, and compact conformation, component is simple, is easy to the micro-difference in torque buffer unit of magnetic liquid processed and assemble.
In order to effectively obtain the 26S Proteasome Structure and Function of the micro-difference in torque buffer unit of above-described magnetic liquid, the present invention realizes as follows: this device is by magnet exciting coil, magnetic liquid, rear end cap, rotor, shell, magnetic partiting ring, screw, sealing ring, bearing, overspread, front end housing forms.The face of cylinder of rotor and two end faces are as working face; Rear end cap, shell and front end housing are connected by screw, form the stator of buffer; Install sealing ring between rotor and stator, magnetic liquid is filled in the cavity between rotor and stator, and rear end cap, front end housing install magnetic partiting ring respectively and between shell, and magnet exciting coil is wound in two end cap; Two groups of magnet exciting coils produce rightabout magnetic field, and during energising, the rotor of this buffer does cutting magnetic induction line motion.
When magnet exciting coil is energized, magnetic circuit is produced in rotor, stator and the gap between them, thus magnetic field is produced around magnetic flow liquid, magnetic liquid is magnetized instantaneously, magnetic liquid is made to have certain shear yield stress, thus rotor constantly does cutting magnetic field motion, by the object regulating the size of magnet exciting coil electric current to reach the electrodeless adjustment of moment of torsion.This device according to the size of rotor torque, can regulate the moment of torsion of buffer, providing the controlled buffering moment of continuous rotation by changing the size of current flowing through magnet exciting coil.
The good effect of the micro-difference in torque buffer unit of magnetic liquid of the present invention is: when not increasing rotor volume, efficiently utilize the outer surface of rotor, add the work area of rotor, and whole apparatus structure is compact, component is simple, is easy to processing and assembling.In addition, this device according to the size of rotor torque, can regulate the moment of torsion of buffer, providing the controlled buffering moment of continuous rotation by changing the size of current flowing through magnet exciting coil.
Accompanying drawing explanation
Figure is the internal structure schematic diagram of the micro-difference in torque buffer unit of magnetic liquid of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in more detail.
In the drawings, the micro-difference in torque buffer unit of magnetic liquid of the present invention, its internal structure is made up of magnet exciting coil 1, magnetic liquid 2, rear end cap 3, rotor 4, shell 5, magnetic partiting ring 6, screw 7, sealing ring 8, bearing 9, overspread 10, front end housing 11.The face of cylinder of rotor 4 and two end faces are as working face; Shell 5, rear end cap 3, front end housing 11 are connected by screw 7, form the stator of buffer; Install sealing ring 8 between rotor 4 and stator, magnetic liquid 2 is filled in the cavity between rotor 4 and stator; Rear end cap 3, install magnetic partiting ring 6 between front end housing 11 and shell 5, magnet exciting coil 1 is wound in two end cap; Two groups of magnet exciting coils 1 produce rightabout magnetic field 12, and during energising, the rotor 4 of this buffer does cutting magnetic induction line 12 and moves.
When magnet exciting coil 1 is energized, produce magnetic circuit 12 in rotor 4, stator and the gap between them, thus produce magnetic field around magnetic liquid 2, magnetic liquid 2 is magnetized instantaneously, makes magnetic liquid have certain shear yield stress.Regulate the size of current by magnet exciting coil 1, the cutting torsion that magnetic liquid 2 is produced is enough to overcome external rotor difference in torque, finally makes to rotate with same moment of torsion each other.
Claims (1)
1. the micro-difference in torque buffer unit of magnetic liquid, this device is made up of magnet exciting coil, magnetic liquid, rear end cap, rotor, shell, magnetic partiting ring, screw, sealing ring, bearing, overspread, front end housing; It is characterized in that: shell (5), rear end cap (3), front end housing (11) form the stator of buffer, install sealing ring (8) between rotor (4) and stator, magnetic liquid (2) is filled in the cavity between rotor (4) and stator; Rear end cap (3), between front end housing (11) and shell (5), magnetic partiting ring (6) is installed, magnet exciting coil (1) is wound in two end cap, and two groups of magnet exciting coils (1) produce rightabout magnetic field (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510195628.6A CN104779774A (en) | 2015-04-19 | 2015-04-19 | Magnetic liquid micro torque difference buffering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510195628.6A CN104779774A (en) | 2015-04-19 | 2015-04-19 | Magnetic liquid micro torque difference buffering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104779774A true CN104779774A (en) | 2015-07-15 |
Family
ID=53621066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510195628.6A Pending CN104779774A (en) | 2015-04-19 | 2015-04-19 | Magnetic liquid micro torque difference buffering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104779774A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505557A (en) * | 2017-08-03 | 2017-12-22 | 中南大学 | Flexible loading test device for microelectronic component |
| CN110454525A (en) * | 2019-08-12 | 2019-11-15 | 南京理工大学 | Magneto-rheological grease brake for Robot elbow joint |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB823110A (en) * | 1957-03-26 | 1959-11-04 | Leslie Reginald Blake | Improvements relating to electromagnetic interaction pumps |
| CN102979847A (en) * | 2012-12-03 | 2013-03-20 | 河北工业大学 | Rotary type magneto-rheological damper |
| CN204497949U (en) * | 2015-04-19 | 2015-07-22 | 孙美娜 | The micro-difference in torque buffer unit of magnetic liquid |
-
2015
- 2015-04-19 CN CN201510195628.6A patent/CN104779774A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB823110A (en) * | 1957-03-26 | 1959-11-04 | Leslie Reginald Blake | Improvements relating to electromagnetic interaction pumps |
| CN102979847A (en) * | 2012-12-03 | 2013-03-20 | 河北工业大学 | Rotary type magneto-rheological damper |
| CN204497949U (en) * | 2015-04-19 | 2015-07-22 | 孙美娜 | The micro-difference in torque buffer unit of magnetic liquid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505557A (en) * | 2017-08-03 | 2017-12-22 | 中南大学 | Flexible loading test device for microelectronic component |
| CN110454525A (en) * | 2019-08-12 | 2019-11-15 | 南京理工大学 | Magneto-rheological grease brake for Robot elbow joint |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150715 |