CN203696617U - Magnetic-brush magneto-rheological composite polisher for medical micro bone screws - Google Patents
Magnetic-brush magneto-rheological composite polisher for medical micro bone screws Download PDFInfo
- Publication number
- CN203696617U CN203696617U CN201420086523.8U CN201420086523U CN203696617U CN 203696617 U CN203696617 U CN 203696617U CN 201420086523 U CN201420086523 U CN 201420086523U CN 203696617 U CN203696617 U CN 203696617U
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- Prior art keywords
- magnetic
- cylinder
- magneto
- cover
- drum
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- Expired - Lifetime
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title abstract 6
- 238000005498 polishing Methods 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000003082 abrasive agent Substances 0.000 claims description 12
- 239000011344 liquid material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 239000007767 bonding agent Substances 0.000 abstract description 3
- 210000004209 hair Anatomy 0.000 abstract 2
- 238000005507 spraying Methods 0.000 abstract 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000004400 mucous membrane Anatomy 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- LCKIEQZJEYYRIY-UHFFFAOYSA-N Titanium ion Chemical compound [Ti+4] LCKIEQZJEYYRIY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model discloses a magnetic-brush magneto-rheological composite polisher for medical micro bone screws. The composite polisher comprises a drum, a detachable left cover for enclosing the left end of the drum, a right cover for enclosing the right end of the drum, a base and a driving device which is arranged on the base and is used for driving the drum to rotate, wherein a magnetic conduction bar is arranged in the drum; the right end of the magnetic conduction bar is fixed to the right cover, and the axis of the magnetic conduction bar is coincided with the axis of the drum; a plurality of magnetic conduction brush hairs are uniformly arranged on the circumferential surface of the magnetic conduction bar. The composite polisher further comprises a liquid storage tank for storing a magneto-rheological fluid and abrasive mixture, and a hydraulic pump for spraying liquid in the liquid storage tank into the drum. A magnetic field generator is arranged at a position corresponding to the magnetic conduction bar on the left cover. The magnetic-brush magneto-rheological composite polisher has the advantages that an abrasive is fixed to the magnetic conduction brush hairs by taking the magneto-rheological fluid as a bonding agent, thus small portions of parts can be polished, a good polishing effect is achieved, portions such as roots of screws can be polished, dead angles are avoided, and products are prevented from being damaged. The composite polisher is convenient for automatic operation, and is environment-friendly.
Description
Technical field
The utility model relates to the magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type.
Background technology
Quality is light, intensity is high, corrosion resistance is excellent because have for titanium or titanium alloy, and can not produce the characteristics such as allergy to human body skin become the novel metal of the 21 century after steel, aluminium, magnesium, be widely used at biomedical sector as bone screw etc., bone screw is that Medical orthopaedic is indispensable, but the description of medical bone screw is many, tooth form is special (non-standard) mostly is camber, physical dimension is little and elongated, diameter is little of 1.5mm, length 5mm, the feature such as even less, has brought challenge to follow-up polishing process.
The finishing method of titanium or titanium alloy can be divided into machine glazed finish, chemical polishing.
Machine glazed finish, refer to polishing wheel High Rotation Speed, polished part and polishing wheel friction produce high temperature, polished part plastic deformation is improved, under the effect of polishing force, polished part surface produces plastic deformation, and the part of projection is pressed into and flows, recessed part is filled and led up, thereby uneven surface is improved.But after general machine glazed finish, there is the drawback of more serious polishing line.
Chemical polishing is acid corrosion, and the main matter adopting is the solution of hydrofluoric acid or fluorine ion.Its mechanism is: metal is in chemical brightening solution, and due to sour oxidation, surface forms the thicker mucous membrane of one deck, and this layer of mucous membrane is thinner at compare Tu position, metal surface, and more recessed part is thicker.Meanwhile, due to sour reduction, make metal surface that solubilizing reaction occur, the metal ion of dissolving is when spreading in solution, and contrary at compare Tu position, metal surface, this chemical reaction carries out repeatedly, thereby metal surface reaches the object of leveling.Titanium or titanium alloy substrate are carried out when chemical polishing is processed vigorous reaction can occur, the Stability of Metal Complexes of fluorine ion and titanium ion is very strong, can adsorbed close on the surface of titanium or titanium alloy, make titanium or titanium alloy substrate and air isolated, therefore titanium or titanium alloy-based surface also just cannot generate passivating film, this be also the plating of most of titanium or titanium alloy and other surface treatments with the solution corrosion that contains hydrofluoric acid the reason as pre-treatment.But hydrofluoric acid is a kind of highly toxic substance, highly volatile in air, not environmental protection.
At the magnetorheological polishing machine of reporting in the past, the curve form surface of rule comparatively (as optical mirror slip etc.) polishing is processed with to good effect, but but run into very large difficulty in the more complicated machine components parts surface of shape particularly resembles the undersized polishings such as screw, or even impossibility.
Summary of the invention
The purpose of this utility model is to provide medical miniature bone screw magnetic brush type magneto-rheological combined polishing machine, can effectively solve the miniature bone screw of medical titanium alloy and be difficult to the problem that polishing reaches regulation requirement or environment had to severe contamination.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: the magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type, comprise cylinder, by dismountable left cover of cylinder left end sealing, by the sealing of cylinder right-hand member and right cover, base and be arranged on the drive unit that on base, head roll rotates, in described cylinder, be provided with magnetic conductive rod, described magnetic conductive rod right-hand member is fixed in right cover and the axis of magnetic conductive rod and the dead in line of cylinder, and the periphery of described magnetic conductive rod is provided with some magnetic conduction bristles;
Also comprise storage magnetic flow liquid and abrasive mixture fluid reservoir, liquid in fluid reservoir is sprayed into the hydraulic pump in cylinder, position corresponding with magnetic conductive rod in described left cover is provided with magnetic field generator.
Preferably, also comprise ultrasonic wave amplitude transformer, described ultrasonic wave amplitude transformer comprises the tool bar that is arranged in magnetic conductive rod, be arranged on ultrasonic transformer that in magnetic conductive rod, right-hand member is connected with tool bar, be fixed on fixing end cap in right cover, be arranged on the transducer in right cover; Further can carry out ultrasonic polishing, polishing effect is provided.
Preferably, on the inwall of described cylinder, have some the grooves parallel with cylinder axis; Part in cylinder is better moved up and carry out polishing.
Preferably, have the hand-hole of being convenient in magnetic flow liquid and abrasive mixture injection cylinder in described left cover, described hydraulic pump is connected with hand-hole by detachable conduit; Convenient by magnetic flow liquid and abrasive mixture injection cylinder.
Preferably, the diameter of described left cover and the diameter of right cover are all greater than the diameter of cylinder, two rotating shafts that described drive unit comprises drive motors, driven by drive motors, two rotating shafts are rotated and are fixed on base, described left cover is erected between two rotating shaft left ends, and described right cover is erected between two rotating shaft right-hand members; Be convenient to the handling of cylinder, be also convenient to head roll rotation part is carried out to polishing.
Compared with prior art, the utility model has the advantages that: utilize magnetic flow liquid to meet the curing feature of magnetic, magnetic flow liquid is fixed on abrasive material on magnetic conduction bristle as bonding agent, thereby can all carry out polishing to the tiny part of part, polishing effect is good, can be polished to the parts such as screw root of the tooth, do not stay dead angle, to product not damaged, be particularly suitable for small product, and utilize the specific of magnetic flow liquid automatically to repair after wearing and tearing, and formation can be carried out " the flexible magnetic rheology brush " of polishing processing continuously, and automation mechanized operation is convenient, environmental protection.
Accompanying drawing explanation
Fig. 1 is the structural representation of the magneto-rheological combined polishing machine of the utility model medical miniature bone screw magnetic brush type while not adding magnetic flow liquid;
Fig. 2 is that the magneto-rheological combined polishing machine of the utility model medical miniature bone screw magnetic brush type adds the structural representation after magnetic flow liquid magnetization;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the top view of the magneto-rheological combined polishing machine of the utility model medical miniature bone screw magnetic brush type.
The specific embodiment
Consult Fig. 1, Fig. 2 is the embodiment of the magneto-rheological combined polishing machine of the utility model medical miniature bone screw magnetic brush type, the magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type, comprise cylinder 1, by dismountable left cover 2 of cylinder 1 left end sealing, by cylinder 1 right-hand member sealing and right cover 3, base 4 and be arranged on the drive unit that on base 4, head roll 1 rotates, in described cylinder 1, be provided with magnetic conductive rod 5, described magnetic conductive rod 5 right-hand members are fixed in right cover 3 and the dead in line of the axis of magnetic conductive rod 5 and cylinder 1, the periphery of described magnetic conductive rod 5 is provided with some magnetic conduction bristles 6,
Also comprise storage magnetic flow liquid and abrasive material 8 mixtures fluid reservoir 7, liquid in fluid reservoir 7 is sprayed into the hydraulic pump 10 in cylinder 1, in described left cover 2, the position corresponding with magnetic conductive rod 5 is provided with magnetic field generator 11.
Also comprise ultrasonic wave amplitude transformer 12, described ultrasonic wave amplitude transformer 12 comprises the tool bar 13 that is arranged in magnetic conductive rod 5, be arranged on ultrasonic transformer 14 that the interior right-hand member of magnetic conductive rod 5 is connected with tool bar 13, be fixed on fixing end cap 15 in right cover 3, be arranged on the transducer 16 in right cover 3.
As shown in Figure 3, on the inwall of described cylinder 1, have some the grooves 17 parallel with cylinder 1 axis, in described left cover 2, have the hand-hole 18 of being convenient in magnetic flow liquid and abrasive material 8 mixtures injection cylinders 1, described hydraulic pump 10 is connected with hand-hole 18 by detachable conduit 19, the diameter of the diameter of described left cover 2 and right cover 3 is all greater than the diameter of cylinder 1, described drive unit comprises drive motors, two rotating shafts 20 that driven by drive motors, as shown in Figure 4, two rotating shafts 20 are rotated and are fixed on base 4, described left cover 2 is erected between two rotating shaft 20 left ends, described right cover 3 is erected between two rotating shaft 20 right-hand members.
When use, now need the miniature bone screw of polishing to put into cylinder 1, then cover left cover 2, cylinder 1 is placed on drive unit, make left cover 2 between two rotating shaft 20 left ends, right cover 3 is erected between two rotating shaft 20 right-hand members, thereby driving rotating shaft 20 to rotate by drive motors rotates cylinder 1, before cylinder 1 rotates, first make magnetic field generator 11 work, make magnetic conduction bristle 6 be with magnetic, then the mixture to the interior injection magnetic flow liquid of cylinder 1 and abrasive material 8 by hand-hole 18, enter mixture in cylinder 1 and receive the effect in magnetic conduction bristle 6 magnetic fields, magnetic flow liquid particle 9 can polarize rapidly and abrasive material 8 is arranged on magnetic conduction bristle 6 according to certain rule, and cause the rheologic behavio(u)r of liquid to change rapidly, its shear yield stress and hardness number also will greatly improve, form a kind of Binghaln material of similar solid.Magnetic flow liquid particle 9 is just as the bonding agent in plain wheel, non magnetic abrasive material 8 is clamped between magnetic chain, form magnetic current brush by magnetic conduction bristle 6, magnetic flow liquid particle 9 and abrasive material 8, if it is destroyed to form magnetic current brush in process, magnetic current brush new under the effect in magnetic field can generate rapidly again, thereby forms " the flexible magnetic rheology brush " that can carry out continuously polishing processing.Therefore can adapt to the precision finishing of complicated surface bow and arrow, after the mixture filling of magnetic flow liquid and abrasive material 8, main-inlet need to be sealed.
Annotate after the mixture of magnetic flow liquid and abrasive material 8, restart drive unit, by being arranged on the speed-regulating switch on base 4, regulate rotating shaft 20 to suitable rotating speed, rotating shaft 20 drives left cover 2 and right cover 3 to rotate, and cylinder 1 also just rotates, and the groove 17 on cylinder 1 inwall is with the rotation of actuating miniature workpiece, magnetic current brush carries out miniature workpiece polishing, and each position that magnetic current brush can be polished to miniature workpiece comprises teeth and the root of the tooth of screw thread.For better polishing effect, ultrasonic wave amplitude transformer 12 is opened, by transducer 16 and ultrasonic transformer 14 adjustment means bar 13 amplitudes, make magnetic conduction bristle 6, magnetic flow liquid particle 9 and abrasive material 8 vibrations colleagues produce cavitation effect, miniature workpiece is carried out to ultrasonic polishing.
The foregoing is only specific embodiment of the utility model, but technical characterictic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification are all encompassed among the scope of the claims of the present utility model.
Claims (5)
1. the magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type, it is characterized in that: comprise cylinder (1), by dismountable left cover (2) of cylinder (1) left end sealing, by cylinder (1) right-hand member sealing and right cover (3), base (4) and be arranged on the drive unit that the upper head roll (1) of base (4) rotates, in described cylinder (1), be provided with magnetic conductive rod (5), described magnetic conductive rod (5) right-hand member is fixed on right cover (3) above and the axis of magnetic conductive rod (5) and the dead in line of cylinder (1), the periphery of described magnetic conductive rod (5) is provided with some magnetic conduction bristles (6),
Also comprise the fluid reservoir (7) of storage magnetic flow liquid and abrasive material (8) mixture, liquid in fluid reservoir (7) is sprayed into the hydraulic pump (10) in cylinder (1), the upper position corresponding with magnetic conductive rod (5) of described left cover (2) is provided with magnetic field generator (11).
2. the magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type as claimed in claim 1, it is characterized in that: also comprise ultrasonic wave amplitude transformer (12), described ultrasonic wave amplitude transformer (12) comprises the tool bar (13) that is arranged in magnetic conductive rod (5), be arranged on ultrasonic transformer (14) that the interior right-hand member of magnetic conductive rod (5) is connected with tool bar (13), be fixed on fixing end cap (15) in right cover (3), be arranged on the transducer (16) in right cover (3).
3. the magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type as claimed in claim 1 or 2, is characterized in that: on the inwall of described cylinder (1), have some the grooves (17) parallel with cylinder (1) axis.
4. the magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type as claimed in claim 1 or 2, it is characterized in that: in described left cover (2), have the hand-hole (18) of being convenient in magnetic flow liquid and abrasive material (8) mixture injection cylinder (1), described hydraulic pump (10) is connected with hand-hole (18) by detachable conduit (19).
5. the magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type as claimed in claim 1 or 2, it is characterized in that: the diameter of the diameter of described left cover (2) and right cover (3) is all greater than the diameter of cylinder (1), two rotating shafts (20) that described drive unit comprises drive motors, driven by drive motors, two rotating shafts (20) are rotated and are fixed on base (4), described left cover (2) is erected between two rotating shafts (20) left end, and described right cover (3) is erected between two rotating shafts (20) right-hand member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420086523.8U CN203696617U (en) | 2014-02-21 | 2014-02-21 | Magnetic-brush magneto-rheological composite polisher for medical micro bone screws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420086523.8U CN203696617U (en) | 2014-02-21 | 2014-02-21 | Magnetic-brush magneto-rheological composite polisher for medical micro bone screws |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203696617U true CN203696617U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420086523.8U Expired - Lifetime CN203696617U (en) | 2014-02-21 | 2014-02-21 | Magnetic-brush magneto-rheological composite polisher for medical micro bone screws |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203696617U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801993A (en) * | 2014-02-21 | 2014-05-21 | 浙江师范大学 | Magnetic-brush type magneto-rheological composite polishing machine of medical miniature bone screw |
| CN104858723A (en) * | 2015-05-26 | 2015-08-26 | 浙江师范大学 | Spiral magneto-rheological brush polishing machine for non-magnetic elements |
| CN107855834A (en) * | 2017-10-26 | 2018-03-30 | 广东工业大学 | A kind of rolling bearing type magnetorheological finishing device of high-precision ceramic balls |
-
2014
- 2014-02-21 CN CN201420086523.8U patent/CN203696617U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801993A (en) * | 2014-02-21 | 2014-05-21 | 浙江师范大学 | Magnetic-brush type magneto-rheological composite polishing machine of medical miniature bone screw |
| CN103801993B (en) * | 2014-02-21 | 2016-06-08 | 浙江师范大学 | The magneto-rheological combined polishing machine of medical miniature bone screw magnetic brush type |
| CN104858723A (en) * | 2015-05-26 | 2015-08-26 | 浙江师范大学 | Spiral magneto-rheological brush polishing machine for non-magnetic elements |
| CN107855834A (en) * | 2017-10-26 | 2018-03-30 | 广东工业大学 | A kind of rolling bearing type magnetorheological finishing device of high-precision ceramic balls |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |