CN1216723C - Magnetic rheologic polishing head in electromagnetic mode - Google Patents
Magnetic rheologic polishing head in electromagnetic mode Download PDFInfo
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- CN1216723C CN1216723C CN 03153996 CN03153996A CN1216723C CN 1216723 C CN1216723 C CN 1216723C CN 03153996 CN03153996 CN 03153996 CN 03153996 A CN03153996 A CN 03153996A CN 1216723 C CN1216723 C CN 1216723C
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- wheel carrier
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 44
- 238000005498 polishing Methods 0.000 title abstract description 39
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention relates to a magnetic rheologic polishing head in an electromagnetic mode, which belongs to the field of a precise surface processing tool. The present invention discloses the magnetic rheologic polishing head in an electromagnetic mode so as to overcome the defects that processing parameters in the existing magnetic rheologic polishing are not flexible, and the polishing removing quantity is not easy to control. The magnetic rheologic polishing head comprises an electromagnetic wheel carrier, a magnetism isolation ring, an electromagnetic coil, a magnetism conduction tray and a wheel core. The present invention is characterized in that the polishing head forms a disk shape, both sides of the magnetism isolation ring are provided with steps which are installed on the exterior margin of the electromagnetic wheel carrier and the magnetism conduction tray by interference fit; the electromagnetic wheel carrier, the magnetism conduction tray and the wheel core are installed together by interference fit; the electromagnetic coil which is a disk coil is positioned in a cavity formed by the electromagnetic wheel carrier and the magnetism condition disk tray; the wheel core is connected with an external rotating axis by a key. The present invention solves a problem in the prior art, and the present invention can satisfy requirements of flexible polishing processing and can realize effective control of polishing and processing.
Description
Technical field
The invention belongs to accurate Machining of Curved Surface field of tool.
Background technology
Aspheric surface optical accessory is a kind of very important optical element, and relatively commonly used have paraboloidal mirror, hyperbolic mirror, an off-axis paraboloids and ellipsoids mirrors etc.Aspheric surface optical accessory can be proofreaied and correct multiple aberration easily, and for spherical optics part, needs a plurality of parts to combine usually and just can reach same effect.Like this, the use of aspherical mirror can improve the image quality of optical system greatly, simplifies optical system.And with respect to symmetrical non-spherical lens, free-form surface lens has bigger advantage.The processing method of free-form surface lens also has a lot, wherein the computer control optical surface is shaped (CCOS) technology by specific polishing algorithm, control grinding and polishing head, according to detecting the dimension deviation that data provide, the finishing machined parameters, can realize the ultraprecise processing of free form surface, be a research direction of current Free-Form Surface Machining.
Magnetic fluid is a kind of colloid admixture of solid-liquid two-phase, and uses magnetic material as the solid phase particles in the colloid admixture.Magnetic fluid has certain fluidity as colloid admixture, the more important thing is because magnetic fluid has magnetization property, can control the viscosity and the local shape of magnetic fluid by the control external magnetic field.In a single day under the effect of outside magnetic field, Magnetorheologicai polishing liquid shows significant rheological behaviour, if Magnetorheologicai polishing liquid makes to become the state of similar solid when being subjected to a strong magnetic field action, and leaves magnetic field, become flowing liquid again immediately.Under the effect of high-gradient magnetic field, Magnetorheologicai polishing liquid viscosity and hardness increase, and form the ribbon shape of projection, become to form to have viscoplastic medium.When medium contacts with surface of the work, concurrent looks just can produce shearing force, thereby make the surface of the work material be removed, thereby reach the effect of polishing during to motion on surface of the work.Shape, the hardness of the projection that forms during magnetorheological the polishing can be controlled by magnetic field fully, and flowing owing to magnetic flow liquid, machining area constantly is updated, so do not have wearing and tearing or problem on deformation, thereby guaranteed the uniformity of the working unit characterisitic function in whole polishing process, so just can accurately control the removal of material.In magnetic fluid, sneak into certain polish abrasive according to the actual needs of polishing and realize polishing, utilize the characteristic of magnetic fluid to polish promptly and be called " magnetorheological polishing ".
CCOS technology and Technique of Magnetorheological Finishing are combined, and the advantage of comprehensive two technology becomes a kind of effective means of ultraprecise aspherical mirror machining.Employed magnetic field is many to be provided by permanent magnet and existing Technique of Magnetorheological Finishing is studied, can't be according to actual machining status flexible modulation magnetic field intensity, like this, realize different polishing removal amounts, just need control polishing residence time, just surperficial speed of related movement is realized, makes process discontinuous.Use electromagnet to provide processing required magnetic field, just can change magnetic field intensity and control the polishing removal amount, rather than change residence time, make process more stable.
Fig. 1 has showed the working method that a kind of existing Technique of Magnetorheological Finishing adopted.Convex surface spare 12 is immersed in the Magnetorheologicai polishing liquid 13 and moving coil 14 maintains a certain distance, and has formed very little gap like this between moving coil 14 and surface of the work.And magnetic pole 15 is placed on the another side of moving coil 14, and the magnetic field that provides polishing required is provided.When Magnetorheologicai polishing liquid 13 is sent near the gap between moving coil 14 and the workpiece to be machined 12, under the effect of high-gradient magnetic field, the magnetic flow liquid 13 stressed moving coils 14 of pressing to, can form the ribbon shape of projection, Magnetorheologicai polishing liquid viscosity and hardness increase simultaneously, form to have viscoplastic medium.When medium with moving coil 14 be moved into the little gap that workpiece 12 and moving coil form the time, the zone that surface of the work is contacted with it will produce shearing force, thereby make the surface of the work material be removed.This mode control workpiece 12 incline direction and with the relative position relation of magnetic pole 15, realize polishing action, thereby finish polishing processing workpiece 12 to diverse location.Magnetic field is fixed in this polishing processing, mainly be to rotatablely move or feeding realizes removal requirement to the surface of the work diverse location by the workpiece 12 that is positioned at the top, so be difficult to realize the bigger workpiece of processing dimension, the processing bore generally has only tens millimeters.Secondly processing work certain restriction also arranged in shape, can not realize profile processing to deep camber, the processing of concave surface is also inconvenient.
Summary of the invention
Dumb in order to solve the machined parameters that has now in the magnetorheological polishing, the polishing removal amount is not allowed manageable shortcoming, the present invention proposes the magnetorheological rubbing head of a kind of electromagnetic mode, comprise electromagnetism wheel carrier, magnetism-isolating loop, solenoid, magnetic conductive disk and core wheel, it is characterized in that: described rubbing head is a disc, there is step described magnetism-isolating loop both sides, are installed in the outer rim of electromagnetism wheel carrier and magnetic conductive disk by interference fit; Described electromagnetism wheel carrier and magnetic conductive disk and core wheel are installed together by interference fit; Described solenoid is a disccoil, is positioned among the cavity of electromagnetism wheel carrier and magnetic conductive disk formation; Pass through key connecting between the described core wheel and the external axis of rotation.
Electromagnetism wheel carrier of the present invention and magnetic conductive disk are soft magnetic materials.
Magnetism-isolating loop of the present invention is non-ferromagnetic material.
Core wheel of the present invention is non-ferromagnetic material.
The employed power supply of solenoid of the present invention is dc source or square wave alternating-current power supply.
Electromagnetic mode rubbing head of the present invention is according to certain forms of motion, and combining with digital control three-dimensional grinding machine can be realized the grinding and polishing to surface of the work.After the solenoid conduction, promptly produce Distribution of Magnetic Field in the rubbing head outer rim, and rubbing head itself exists and rotatablely moves, when Magnetorheologicai polishing liquid enters magnetic field, become and have viscoplastic Stuart Bingham (Bingham) medium, to stick to the rubbing head outer rim, and form protruding, when this projection contacts with surface of the work and when having relative motion, can produce certain shearing force in the zone that surface of the work contacts with it, thereby remove the surface of the work material, like this in the machine tooling scope, the surface of the work of arbitrary shape can be processed, and the effect that general Technique of Magnetorheological Finishing can reach can be reached fully in crudy.In addition, rotatablely moving of rubbing head is public rotation compound motion among the present invention, makes the lines that adds man-hour complicated more like this, can further improve quality of finish.Experiment showed, that the present invention can be applied to the optical work of the machining shape complexity, large-scale and non-rotating symmetry.
Description of drawings
Fig. 1 is the process principle schematic diagram of existing Technique of Magnetorheological Finishing.
Fig. 2 is a main cutaway view of the present invention.
Fig. 3 is a right view of the present invention.
Fig. 4 is a work schematic diagram of the present invention.
The specific embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Fig. 2 has showed the project organization of rubbing head, from the figure as can be seen, comprise electromagnetism wheel carrier 1, magnetism-isolating loop 2, solenoid 3, magnetic conductive disk 4 and core wheel 5, it is characterized in that: described rubbing head is a disc, there is step magnetism-isolating loop 2 both sides, be installed in the outer rim of electromagnetism wheel carrier 1 and magnetic conductive disk 4 by interference fit, when magnetism-isolating loop 2 plays the support structure effect, also coil played the effect of seal protection; Electromagnetism wheel carrier 1 and magnetic conductive disk 4 and core wheel 5 are installed together by interference fit; Solenoid 3 is a disccoil, is positioned among the cavity of electromagnetism wheel carrier 1 and magnetic conductive disk 4 formation, and utilizes electromagnetism wheel carrier 1 and magnetic conductive disk 4 to form required magnetic conductive loop; Pass through key connecting between the core wheel 5 and the external axis of rotation.
Electromagnetism wheel carrier and magnetic conductive disk can adopt soft magnetic materials, comprise not alloy (1J50) of soft iron or glass.
Magnetism-isolating loop can adopt non-ferromagnetic material, comprises aluminium alloy or stainless steel.
Core wheel can adopt non-ferromagnetic material, comprises aluminium alloy or stainless steel.
The employed power supply of solenoid is dc source or square wave alternating-current power supply.
Fig. 3 is a right view of the present invention, shows that described instrument is discoid.
Fig. 4 has expressed work operating position of the present invention.Power supply required for the present invention is that brush is supplied with.Rotatablely moving of rubbing head 9 of the present invention is the compound motion of public rotation, the rotating speed w1 that wherein revolves round the sun, and rotation rotating speed w2, brush just need use respectively at revolution and two simple rotation movement positions of rotation place like this.By revolution brush 8, power supply can be led the revolution motion level by lead 7, and by rotation brush 6, power supply can arrive the rubbing head rotating shaft by lead 7.Bore blind hole at an end of central shaft, power supply can arrive at the solenoid in the rubbing head smoothly like this, in order to produce the needed magnetic field of polishing processing.After the energising, just had Distribution of Magnetic Field in the rubbing head outer rim, entered the effect that this regional Magnetorheologicai polishing liquid 10 is subjected to magnetic field, be adsorbed on the polishing wheel 9 by magnetic force, simultaneously, viscosity and hardness also change.Polishing fluid contacts with workpiece 11 surfaces, and follows polishing wheel in workpiece 11 surface generation relative motions, like this, just can produce shearing forces on workpiece 11 surfaces, reach the purpose that material is removed.By computer numerical control, rubbing head is advanced with path planning on workpiece 11 surfaces, just can realize the polishing processing of any free form surface.
Claims (1)
1. the magnetorheological rubbing head of electromagnetic mode, comprise electromagnetism wheel carrier (1), magnetism-isolating loop (2), solenoid (3), magnetic conductive disk (4) and core wheel (5), it is characterized in that: described rubbing head is a disc, described magnetism-isolating loop (2) is non-ferromagnetic material, there is step both sides, are installed in the outer rim of electromagnetism wheel carrier (1) and magnetic conductive disk (4) by interference fit; Described electromagnetism wheel carrier (1) and magnetic conductive disk (4) are soft magnetic materials, are installed together by interference fit with core wheel (5); Described solenoid (3) is a disccoil, is positioned among the cavity of electromagnetism wheel carrier (1) and magnetic conductive disk (4) formation; Described core wheel (5) is non-ferromagnetic material, and passes through key connecting between the external axis of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153996 CN1216723C (en) | 2003-08-22 | 2003-08-22 | Magnetic rheologic polishing head in electromagnetic mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153996 CN1216723C (en) | 2003-08-22 | 2003-08-22 | Magnetic rheologic polishing head in electromagnetic mode |
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| Publication Number | Publication Date |
|---|---|
| CN1486821A CN1486821A (en) | 2004-04-07 |
| CN1216723C true CN1216723C (en) | 2005-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03153996 Expired - Fee Related CN1216723C (en) | 2003-08-22 | 2003-08-22 | Magnetic rheologic polishing head in electromagnetic mode |
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| Country | Link |
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| CN (1) | CN1216723C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436052C (en) * | 2006-09-04 | 2008-11-26 | 厦门大学 | Polishing wheel with parameter adjustable type magnetic rheology |
| CN102602469A (en) * | 2012-03-25 | 2012-07-25 | 杨利民 | Combined magnetic wheel |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328007C (en) * | 2004-11-23 | 2007-07-25 | 哈尔滨工业大学 | Ultrasonic magnetic rheological composite polishing method and polisher thereof |
| DE102006033004A1 (en) * | 2005-08-09 | 2007-09-13 | Löcker, Christian | Working, smoothing and cold-hardening of the surface of tools, machine parts or other parts comprises hammering the surface with an electromagnetically controlled hammer head |
| CN100436064C (en) * | 2007-02-15 | 2008-11-26 | 厦门大学 | Composite abrasion wheel for grinding and polishing |
| CN101862998B (en) * | 2010-05-21 | 2011-09-28 | 厦门大学 | Modular freely-assembled polishing wheel |
| CN101972952B (en) * | 2010-07-13 | 2012-01-04 | 厦门大学 | Axisymmetric variable magnetic field polishing wheel |
| CN101972996B (en) * | 2010-07-13 | 2012-10-17 | 厦门大学 | Polishing wheel of small grinding head of controllable alternating magnetic field |
| US8613640B2 (en) * | 2010-12-23 | 2013-12-24 | Qed Technologies International, Inc. | System for magnetorheological finishing of substrates |
| WO2013091208A1 (en) * | 2011-12-22 | 2013-06-27 | 中国科学院长春光学精密机械与物理研究所 | Polishing device for fork type support |
| CN103111917B (en) * | 2013-01-28 | 2015-11-18 | 嘉兴纳美精密机械有限公司 | The efficient magnetorheological grinding and polishing device that a kind of magnetic circuit break-make is controlled |
| CN107825230B (en) * | 2017-11-23 | 2019-04-05 | 东北大学 | A kind of resultant field formula Magnetorheological Polishing head |
| CN108788937A (en) * | 2018-06-19 | 2018-11-13 | 东北大学 | A kind of rotary pole magnetorheological finishing device and method |
| CN110076703A (en) * | 2019-03-12 | 2019-08-02 | 湘潭大学 | A kind of hydraulic grinding wheel of magnetic fluid and its controllable type polishing processing method |
| CN110064997A (en) * | 2019-06-05 | 2019-07-30 | 中国工程物理研究院机械制造工艺研究所 | Mangneto rheological deformation effect burnishing device and method for thin wall special-shaped curved surface |
| CN111687696A (en) * | 2020-07-25 | 2020-09-22 | 浙江师范大学 | Flexible polishing head based on magnetorheological elastomer |
-
2003
- 2003-08-22 CN CN 03153996 patent/CN1216723C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436052C (en) * | 2006-09-04 | 2008-11-26 | 厦门大学 | Polishing wheel with parameter adjustable type magnetic rheology |
| CN102602469A (en) * | 2012-03-25 | 2012-07-25 | 杨利民 | Combined magnetic wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1486821A (en) | 2004-04-07 |
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