CN207358731U - A kind of multinomial movement is superimposed big magnetic circuit magnetorheological finishing device - Google Patents
A kind of multinomial movement is superimposed big magnetic circuit magnetorheological finishing device Download PDFInfo
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- CN207358731U CN207358731U CN201721313526.0U CN201721313526U CN207358731U CN 207358731 U CN207358731 U CN 207358731U CN 201721313526 U CN201721313526 U CN 201721313526U CN 207358731 U CN207358731 U CN 207358731U
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- rubbing head
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Abstract
A kind of multinomial movement is superimposed big magnetic circuit magnetorheological finishing device and method, and wherein rubbing head is made of shaft, fixture and the magnet that is placed in fixture, and horizontal reciprocating movement can be done while autobiography by the rubbing head transmission mechanism driving installed on the table；Polishing disk equipped with magnetic flow liquid is located at rubbing head lower part, drives rotation by the polishing coil motor in motor housing, and adjust its gap with workpiece bottom by the lifting platform on base station.Polished using the device, have the advantages that magnetic circuit scope is big, magnetic field homogenization is good, the multinomial movement interference of workpiece polishing effective district is superimposed, updated easy to polishing area magnetic flow liquid, machining chips are easily discharged, it is long to polish stroke, the workpiece surface Micro texture track that polishing is formed can be made complicated, homogeneity is good, and quality of finish is high.
Description
Technical field
Burnishing device equipment and technique are the utility model is related to, particularly one kind is polished workpiece using magnetic flow liquid
Device.
Background technology
It is easy to cause that sub-surface damage is serious, polishing fluid is dirty for workpiece outer surface corrosion existing for conventional polishing process
Dye, production cost are high, efficiency is low and the series of problems such as scrappage is high, occur a kind of magnetic current in recent years in Ultra-precision Turning field
Become glossing.It is by adding appropriate Polishing Powder in magnetic flow liquid, is cured using magnetic flow liquid in magnetic feature lower class,
Machining area formed with certain degree of hardness and elasticity, larger shear stress can be born, workpiece is polished.Magnetorheological Polishing is made
The optical surface being of high quality can be obtained, be easily achieved computer control, can obtain by having for novel intelligent polishing technology
More complicated face shape, removal efficiency be high, there is no the advantages that tool wear and clogging, has in Ultra-precision Turning field
High application value.The technique has been widely used in aerospace, electromechanical engineering, automobile engineering, civil engineering, precision
Process engineering, the control technical field such as engineering and Medical Devices.
Magnetorheological finishing device by rubbing head, polishing disk, produce the magnet (permanent magnet or electromagnet) in magnetic field and magnetorheological
Liquid forms, and is polished workpiece some and is placed on rubbing head, some is placed in polishing disk, various informative.
Existing magnetorheological device, mostly there are the technical problem of three influence workpiece processing qualities to some extent：One
It is that magnetic circuit coverage is small, and Magnetic field inhomogeneity, make the Micro texture uniformity of work piece surface undesirable；Second, burnishing device
Movement interference superposition is less, and the Micro texture track that workpiece surface is formed is single；Third, because magnetic field is parallel to polished surface
Immovable on direction, magnetic flow liquid exchanges not freely in polishing area, prevents machining chips to cause to polish from discharging in time
Surface integrity is poor.
ZL96198445.7 patents disclose a kind of magnetorheological precise machining device of certainty and method, it is to install workpiece
In carrier fluid near surface, carrier fluid drives magnetorheological introducing workpiece and carrier fluid gap location, and the reaction of magnetisation rheology is issued in magnetic fields,
Realize deterministic theory.This method polishes for point contact type, is to remove workpiece surface and the material of magnetic flow liquid contact portion,
The drawback is that：Magnetic flux density decays comparatively fast on the vertical direction of magnetic pole surfaces, and magnetic circuit coverage is small, after magnetic flow liquid cures
The polishing tool hardness of formation is uneven, and processing effect is not good enough, and the workpiece efficiency larger for polishing face is low.
ZL201410528441.9 patents disclose a kind of magnetorheological finishing device and method, and this method is utilized installed in past
Answering a pager's call in structure, the spinning motion of workpiece is overlapped mutually in the reciprocating motion of electromagnet and rubbing head, realizes workpiece table under compound motion
The removal of plane materiel material.It the method achieve the long and narrow big plane surface Polishing machining of workpiece, and the magnetorheological solid-liquid in workpiece polishing area
Exchange cycles are smooth, and machining chips can discharge in time.But because of still less (the only electromagnetism of workpiece polishing effective district movement interference superposition
The reciprocating motion of iron and the spinning motion of workpiece are overlapped mutually) and the original such as workpiece centre area linear velocity small (middle spot speed is zero)
Cause, material removal effect are still not ideal enough.
ZL200620155638.3 patents disclose a kind of flat grinding-and-buffing attachment using magnetorheological effect, it is by multiple works
Part is separately mounted to do on the workbench of rotary motion；It can pacify around the dot matrix magnetically grinding instrument (rubbing head) of central axis
Mounted in the top of workpiece, and adjusting its lateral position to feed system by X makes it corresponding with workpiece to be machined, passes through Y-direction
Feed system adjusts its gap between workpiece；It is right using slurry nozzle to filling lapping liquid between milling tool and workpiece
It is distributed in the touring grinding and polishing of workpiece of workbench upper rotary movement.What this method was taken is face contact type polishing, although having
The advantages of magnetic circuit coverage is big, (while processing multiple workpiece) high in machining efficiency, but there is also shortcoming：Because having in workpiece polishing
Effect area only has workbench rotation and milling tool rotation, and (milling tool is mixing up X to simply rotation behind position, not reciprocal fortune
It is dynamic) the interference superpositions of two kinds of movements, the linear velocity of the rotary motion reason such as not is done on rotary table plus each workpiece, is made
Grind clearance is not uniform enough, easily forms the defects of finished surface Micro texture track is single and surface homogenization is poor.
ZL201210304530.6 patents disclose a kind of magnetorheological plane polishing processing technology of cluster, it is to utilize cluster
The i.e. effect curing characteristic of micro- bistrique, becomes single magnet as multiple micro- magnetic pole bodies in burnishing device, it is embedded in non-magnetic matrix
In, utilize the material removal efficiency of the micro- bistrique of the parametric variations such as the arrangement mode of magnetic pole, size.This method (cluster magnetic current
Become) formed bingham model into large area platy structure, a wide range of coating workpieces polishing area of magnetic circuit, but magnetic flow liquid polishing add
Solid-liquid exchanges not smooth in work area, and work pieces process chip easily remains in Stuart Bingham plate surface, it is impossible to discharges, influences the polishing of workpiece
Quality.
Utility model content
For above-mentioned technical problem existing in the prior art, the purpose of this utility model is to provide a kind of magnetic circuit coverage
Greatly, magnetic field homogenization is good, workpiece polishing effective district is superimposed by multinomial movement interference, polishing area magnetic flow liquid is multinomial easy to renewal
Movement is superimposed big magnetic circuit magnetorheological finishing device.
Multinomial movement provided by the utility model, which is superimposed big magnetic circuit magnetorheological finishing device, includes rack, rubbing head and polishing
Disk, has magnetic flow liquid in polishing disk；
The rack by base station, found support column on base station and formed installed in the workbench of upper part of the supporting column；It is described
Rubbing head is made of shaft, the fixture installed in shaft lower end and the magnet that is placed in fixture, and by installing on the table
Rubbing head transmission mechanism driving horizontal reciprocating movement while around axial rotation；The polishing disk is located at the lower part of rubbing head,
Driven by the polishing coil motor in polishing disk motor housing around axial rotation, and pass through the lifting on the base station
Platform adjusts the gap between polishing disk and the workpiece being anchored in the fixture.
The rubbing head transmission mechanism includes rubbing head motor housing, drives rubbing head to rotate in rubbing head motor housing
Rubbing head motor, be laid with slide block guide rail on the table and the reciprocal transmission installed in workbench rubbing head motor housing sidepiece
Motor, reciprocal transmission motor, along slide block guide rail horizontal reciprocating movement, drive rubbing head by eccentric wheel drive rubbing head motor housing
Horizontal reciprocating movement.
The method being polished using the big magnetic circuit magnetorheological finishing device of above-mentioned multinomial movement superposition, is comprised the following steps：
(1) magnet for selecting magnetic flux density big is placed in the top of the fixture of rubbing head, is being thrown work piece using lasso
The lower part of the fixture of shaven head, and the polished face of workpiece is higher by the bottom surface of fixture, pass through the upper bottom of lifting platform adjustment polishing disk
Put, it is setting value to make the gap between the polished face of workpiece and polishing disk, and magnetic flow liquid is then injected in polishing disk；
(2) rubbing head motor is started, driving rubbing head rotates, and drives fixture, magnet and workpiece to rotate synchronously；
(3) reciprocal transmission motor is started, being rotated by eccentric wheel makes rubbing head motor housing, fixture, magnet and workpiece together
Horizontal reciprocating movement；
(4) polishing coil motor is started, driving polishing disk rotates, and makes workpiece carry out table under the conditions of the superposition of multinomial movement interference
Mirror polish；
(5) polishing terminates, and closes down rubbing head motor, polishing coil motor and reciprocal transmission motor, is adjusted and thrown by lifting platform
The gap of shaven head and polishing disk, makes workpiece leave magnetic flow liquid, then unloads workpiece from fixture.
Compared with prior art, the beneficial effects of the utility model are：
1st, since magnet and workpiece are synchronized with the movement in whole polishing process, magnet can produce sufficiently large the utility model
Magnetic circuit come the effective polishing area of coating workpieces, form the magnetorheological bingham model of large area, make effective polishing area of workpiece whole
(see Fig. 4) in magnetorheological bingham model, magnetic circuit scope is big, and magnetic field homogenization is good, and workpiece can be made to obtain a wide range of polishing, throws
Light is abundant, and workpiece material removes obvious.
2nd, it is overlapped mutually by workpiece rotation and reciprocal two kinds of movements with polishing disk rotation triathlon, movement interference fills
Point, make the Micro texture track that workpiece machining surface is formed complicated, polished surface quality is complete.
3rd, workpiece and magnet move reciprocatingly while rotating, and the magnetic flow liquid bingham model in polishing disk is synchronous therewith
Mobile, avoiding single position magnetic flow liquid, solid-liquid converts repeatedly so that effective polishing area bingham model of workpiece is continuously replenished
Renewal, chip easy to process follow the magnetic flow liquid for switching to liquid phase to leave workpiece polishing area, improve the quality of finish of workpiece.
4. the utility model magnetorheological finishing device is simple in structure, compact, easily operated.
Brief description of the drawings
Fig. 1 is the tomograph of the utility model magnetorheological finishing device；
Fig. 2 is the tomograph of rubbing head transmission mechanism in Fig. 1；
Fig. 3 polishes schematic three dimensional views for the utility model workpiece；
Fig. 4 is the utility model polishing principles schematic diagram.
In figure：1- rubbing head motor housings, 2- eccentric wheels, 3- reciprocal transmission motors, 4- slide block guide rails, 5- workbench, 6- turn
Axis, 7- fixtures, 8- magnet, 9- lassos, 10- workpiece, 11- magnetic flow liquids, 12- polishing disks, 13- polishing disk motor housings, 14- liters
Platform, 15- support columns, 16- base stations drop.
Embodiment
Below in conjunction with drawings and examples, the utility model is described in further detail.
As shown in Figure 1, the utility model magnetorheological finishing device includes rack, rubbing head and polishing disk 12.
The rack by base station 16, found four support columns 15 on base station and the workbench 5 installed in upper part of the supporting column
Composition.
With reference to Fig. 1, Fig. 3 and Fig. 4, the rubbing head is by shaft 6, the fixture 7 being fixedly connected by screw with shaft lower end
Formed with the magnet 8 for being placed in fixture top, because magnetic flux density can be influenced be subject to range attenuation between magnet and effective polishing area,
Therefore magnet selects ferromagnetic material, to ensure that the magnetic flux density of processing effective district is sufficiently large, shaft, fixture and polishing disk are using non-
Permeability magnetic material is made, and avoids that magnetic circuit influence occurs with magnet.Rubbing head is driven by the rubbing head transmission mechanism installed on the table
Move horizontal reciprocating movement while around axial rotation.As shown in Fig. 2, rubbing head transmission mechanism is by the throwing positioned at workbench top
Bare headed motor housing 1, the rubbing head motor that driving rubbing head rotates in rubbing head motor housing, the cunning of laying on the table
Block guide rail 4 and reciprocal transmission motor 3 installed in workbench rubbing head motor housing sidepiece form.Wherein motor housing is by passing through screw
Six coaming plates fastened are formed, the rubbing head motor (not shown) that inside installation driving rubbing head rotates.In rubbing head motor housing
A side wall on open up slotted eye, enclosed construction is cooperatively formed with eccentric wheel 2, by installing on the table reciprocal
Driving motor driving eccentric wheel rotates, and rubbing head motor housing is driven along slide block guide rail horizontal reciprocating movement around axial rotation
Rubbing head does horizontal reciprocating movement at the same time.
As shown in Figure 1, the polishing disk is located at the lower part of rubbing head, there is magnetic flow liquid 11 in polishing disk.Polishing disk is by pacifying
Polishing coil motor in polishing disk motor housing 13 can be turned by the driving (not shown) of shaft coupling and polishing disk shaft around axial
Dynamic, polishing disk motor housing is seated in the top of the lifting platform 14 controlled with handwheel, and lifting platform is installed on base station 16, passes through control
The upper-lower height of lifting platform can adjust the gap between polishing disk and the workpiece 10 being anchored in the polishing fixture head.
The embodiment being polished using above-mentioned magnetorheological finishing device
The present embodiment is to utilize above-mentioned magnetorheological finishing device pair radius r=20mm, thickness h=6mm, preprocessing rear surface
K9 optical glass (calling workpiece in the following text) surface Polishing machining of coarse Ra=240nm, carries out according to the following steps：
(1) magnet that magnetic flux density is 3000Gs is fixedly mounted on the top of fixture, and is consolidated with shaft and clamp bolt
Tightly, enclosed magnet；With lasso 9 and work pieces mate, it is fixed using jackscrew installed in the lower part of fixture, and makes workpiece bottom height
Go out the bottom surface of fixture, ensure that workpiece can comprehensive polishing；The handwheel of lifting platform is rotated, adjusts the gap of polishing disk and workpiece bottom
For 1mm, magnetic flow liquid is then noted into polishing disk；
(2) eccentricity of eccentric wheel is adjusted, it is 180mm electromagnet is moved back and forth stroke；
(3) rubbing head motor is started, drive shaft rotates, regulation motor rotating speed, drives fixture, magnet and workpiece with n1
=150r/min is rotated together；
(4) reciprocal transmission motor is started, driving eccentric wheel rotates, and regulation motor rotating speed, drives rubbing head motor housing, folder
Tool, magnet and workpiece are with v=50mm/s together horizontal reciprocating movement；
(5) polishing coil motor is started, driving polishing disk rotates, and regulation motor rotating speed, makes polishing disk with n2=100r/min
Rotate；
(6) under multinomial movement interference superposition, workpiece is polished 30 minutes, completes the removal of workpiece surface material；
(7) polishing terminates, and closes down rubbing head motor, polishing coil motor and reciprocal transmission motor, rubbing head and polishing disk and stops
Only operate, rotate lifting platform handwheel, expand polishing disk and polishing disk spacing, workpiece is left magnetic flow liquid, unloaded from fixture.
K9 optical glass after above-mentioned steps polish, after testing, its polished surface material removing rate MRR=
0.362mg/min, material removing rate are higher；Surface roughness Ra=46nm of optical glass, surface roughness are significantly dropped
It is low, and the surface roughness value measured along polished surface any direction is basically identical；Surface microscopic texture homogenizing characteristic is preferable,
Quality of finish is higher.
Claims (2)
1. a kind of multinomial movement is superimposed big magnetic circuit magnetorheological finishing device, including rack, rubbing head and polishing disk (12), polishing disk
In have magnetic flow liquid (11)；It is characterized in that：
The rack by base station (16), found the support column (15) on base station and workbench (5) group installed in upper part of the supporting column
Into；The rubbing head is made of shaft (6), the fixture (7) installed in shaft lower end and the magnet (8) that is placed in fixture, and by
The rubbing head transmission mechanism of installation on the table drives horizontal reciprocating movement while around axial rotation；The polishing disk position
In the lower part of rubbing head, driven by the polishing coil motor in polishing disk motor housing (13) around axial rotation, and pass through peace
Lifting platform (14) on the base station adjusts the gap between polishing disk and the workpiece (10) being anchored in the fixture.
2. multinomial movement according to claim 1 is superimposed big magnetic circuit magnetorheological finishing device, it is characterised in that：
The rubbing head transmission mechanism includes rubbing head motor housing (1), drives rubbing head to rotate in rubbing head motor housing
Rubbing head motor, be laid with slide block guide rail (4) on the table and installed in the reciprocal of workbench rubbing head motor housing sidepiece
Driving motor (3), reciprocal transmission motor drive rubbing head motor housing along slide block guide rail horizontal reciprocating movement by eccentric wheel (2),
Drive rubbing head horizontal reciprocating movement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721313526.0U CN207358731U (en) | 2017-10-12 | 2017-10-12 | A kind of multinomial movement is superimposed big magnetic circuit magnetorheological finishing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721313526.0U CN207358731U (en) | 2017-10-12 | 2017-10-12 | A kind of multinomial movement is superimposed big magnetic circuit magnetorheological finishing device |
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| CN207358731U true CN207358731U (en) | 2018-05-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486758A (en) * | 2017-10-12 | 2017-12-19 | 辽宁科技学院 | A kind of multinomial motion is superimposed big magnetic circuit magnetorheological finishing device and method |
| CN110842744B (en) * | 2019-11-27 | 2021-03-26 | 含山县承力铸造厂 | Polishing mechanism for grinding working surface of clutch pressure plate |
-
2017
- 2017-10-12 CN CN201721313526.0U patent/CN207358731U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486758A (en) * | 2017-10-12 | 2017-12-19 | 辽宁科技学院 | A kind of multinomial motion is superimposed big magnetic circuit magnetorheological finishing device and method |
| CN110842744B (en) * | 2019-11-27 | 2021-03-26 | 含山县承力铸造厂 | Polishing mechanism for grinding working surface of clutch pressure plate |
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