CN110340742A - A kind of double rubbing head polishing processing devices of bioceramic spherical surface - Google Patents
A kind of double rubbing head polishing processing devices of bioceramic spherical surface Download PDFInfo
- Publication number
- CN110340742A CN110340742A CN201910648638.9A CN201910648638A CN110340742A CN 110340742 A CN110340742 A CN 110340742A CN 201910648638 A CN201910648638 A CN 201910648638A CN 110340742 A CN110340742 A CN 110340742A
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- polishing
- fixed
- hand screw
- assembly
- disk
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- 238000005498 polishing Methods 0.000 title claims abstract description 205
- 239000003462 bioceramic Substances 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 210000004394 hip joint Anatomy 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 208000036487 Arthropathies Diseases 0.000 description 1
- 101000911772 Homo sapiens Hsc70-interacting protein Proteins 0.000 description 1
- 208000012659 Joint disease Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/005—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes using a magnetic polishing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B11/00—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor
- B24B11/02—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor for grinding balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of double rubbing head polishing processing devices of bioceramic spherical surface, fixed polishing disk is fixed on station, left-hand screw polishing assembly and right-hand screw polishing assembly are symmetricly set on station about fixed polishing disk, between left-hand screw polishing assembly and the left side of fixed polishing disk, single helical groove is equipped between right-hand screw polishing assembly and the right side of fixed polishing disk, and the starting point of single helical groove is at the center of fixed polishing disk, single helical groove starting point at left and right sides of fixed polishing disk communicates, filled with Magnetorheologicai polishing liquid in single helical groove, magnetic field generator is equipped in left-hand screw polishing assembly and right-hand screw polishing assembly.Advantage is: being polished by the class solid Magnetorheologicai polishing liquid affected by magnetic fields that becomes, the rotation of left-hand screw polishing assembly and right-hand screw polishing assembly can control the polishing time of polished workpiece, so as to more accurately control polishing degree, it is able to achieve the polishing precision more increased, fully meets the throwing photometric requirement of bioceramic spherical surface.
Description
Technical field
The present invention relates to a kind of double rubbing head polishing processing devices of bioceramic spherical surface.
Background technique
Joint damage caused by arthropathy caused by human diseases or contingency destroys the normal function of human synovial
Can, very big inconvenience is brought to the life and work of patient.According to statistics, about the 10% of world population is replaced using artificial hip joint
Natural hip joint.Human hip is a kind of joint of spherical shape, comprising a spherical femoral head and one like bowl-shape acetabular bone.
Its alternative materials should have that light-high-strength, good biocompatibility, corrosion resistance be strong, fatigue caused by repeated stress is small, wear-resistant
Etc. properties.Material for joint replacement implants is mainly metal, ceramics, macromolecule and composite material.Ceramics are because having life
Object inertia, it is extremely stable in human body, hardness is high, the advantages that being hardly worn is widely used.But ceramic material has
The characteristics such as high rigidity, high intensity, brittleness is big are difficult to process；And the burr after Ceramic implants processing is more, and oxidation film is thicker,
As in medical intervention apparatus implantation human body, the surface roughness of material is higher, it is easy to lead to the formation of thrombus.Therefore, right
More stringent requirements are proposed for the surface of bioceramic artificial joint bulb and micro-roughened surface.
Summary of the invention
The purpose of the present invention is to provide a kind of double rubbing head polishing processing devices of bioceramic spherical surface, can effectively solve the problem that
The problem of implantation human body surface and asperity requirement is not achieved in existing bioceramic spherical surface polishing degree.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions: a kind of bioceramic spherical surface
Double rubbing head polishing processing devices, including station, left-hand screw polishing assembly, right-hand screw polishing assembly, fixed polishing disk and magnetic
Rheology polishing fluid, the fixed polishing disk are fixed on station, and the left-hand screw polishing assembly and right-hand screw polishing assembly close
It is symmetricly set on station in fixed polishing disk, feed inlet, the right-hand screw is provided at the top of the left-hand screw polishing assembly
It is provided with discharge port at the top of polishing assembly, between the left-hand screw polishing assembly and the left side of fixed polishing disk, right-hand screw throws
Single helical groove is equipped between optical assembly and the right side of fixed polishing disk, and the starting point of single helical groove is in fixed polishing disk
The heart, the single helical groove starting point fixed at left and right sides of polishing disk communicate, filled with Magnetorheologicai polishing liquid, the left side in the single helical groove
Magnetic field generator is equipped in helical polishing component and right-hand screw polishing assembly.
Preferably, the left-hand screw polishing assembly includes driving device, rotating polishing discs and helical polishing head, the driving
Device is fixed on station, and the driving device driving rotating polishing discs rotation, the helical polishing head is located to be thrown in rotation
It is fixedly connected between CD and fixed polishing disk and with fixed polishing disk, the end face of the fixed polishing disk of rotating polishing discs direction
It is provided with the first helicla flute, the second helicla flute is provided on the helical polishing head, the fixed polishing disk is opposite with rotating polishing discs
Face on be provided with third helicla flute, first helicla flute, the second helicla flute and third helicla flute form single helical groove, the rotation
Turn to be further fixed on the magnetic field generator on polishing disk.
Preferably, the cross section of first helicla flute is rectangle, and the magnetic field generator is fixed in the first helicla flute.
Preferably, the cross section of several second helicla flutes is Gothic.
Preferably, the cross section of the third helicla flute is arc-shaped.
Preferably, the driving device drives rotating polishing discs rotation by shaft coupling.
Preferably, the rotating polishing discs of the left-hand screw polishing assembly are being thrown with the rotating polishing discs of right-hand screw polishing assembly
The rotation direction of light time is opposite.
Preferably, the top of the fixed polishing disk is equipped with the deflector chute communicated with discharge port.
Compared with prior art, the invention has the advantages that by left-hand screw polishing assembly and right-hand screw polishing assembly and admittedly
The cooperation for determining polishing disk allows polished workpiece moved in the single helical groove on right side in the single helical groove in left side, by by magnetic
Field influence becomes the solid Magnetorheologicai polishing liquid of class and is polished, and passes through the rotation of left-hand screw polishing assembly and right-hand screw polishing assembly
Turn to can control the polishing time of polished workpiece, so as to more accurately control polishing degree, and Magnetorheologicai polishing liquid is not
It by being liquid when magnetic, can preferably be adapted to polished workpiece, tradition is polished switching to class solid-state phase after by magnetic field, it can be real
The polishing precision now more increased fully meets the throwing photometric requirement of bioceramic spherical surface.
The left-hand screw polishing assembly includes driving device, rotating polishing discs and helical polishing head, and the driving device is solid
Be scheduled on station, driving device driving rotating polishing discs rotation, the helical polishing head be located at rotating polishing discs with
It is fixedly connected between fixed polishing disk and with fixed polishing disk, the end face of the rotating polishing discs towards fixed polishing disk is provided with the
One helicla flute, is provided with the second helicla flute on the helical polishing head, on the fixed polishing disk face opposite with rotating polishing discs
It is provided with third helicla flute, first helicla flute, the second helicla flute and third helicla flute form single helical groove, the rotation polishing
The magnetic field generator is further fixed on disk.Single helical groove is composed of three helicla flutes, is more conducively processed, and passes through rotation
The rotation for turning polishing disk drives movement of the workpiece to be processed in single helical groove.
The cross section of first helicla flute is rectangle, and the magnetic field generator is fixed in the first helicla flute.Cross section
Magnetic field generator can be preferably placed for rectangle, and shortens magnetic field generator at a distance from Magnetorheologicai polishing liquid, to magnetic
Rheology polishing fluid generates better effect.
The cross section of several second helicla flutes is Gothic.Gothic, that is, two sections circular arc, the left and right sides is opened
Mouthful, convenient for cooperating with left polishing disk and right polishing disk, while being adapted to the structure of bioceramic spherical surface.
The cross section of the third helicla flute is arc-shaped.The preferably shape of adaptation bioceramic spherical surface, to single-screw
The side of slot is blocked.
The rotating polishing discs of the rotating polishing discs of the left-hand screw polishing assembly and right-hand screw polishing assembly are in polishing
Rotation direction is opposite.Guarantee that parts to be processed can enter from side polishing assembly, from the other side, polishing assembly is come out, without
It shuts down and takes part.
The top of the fixed polishing disk is equipped with the deflector chute communicated with discharge port.The part processed enters from discharge port
Deflector chute facilitates taking-up.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the double rubbing head polishing processing devices of bioceramic spherical surface of the present invention；
Fig. 2 is the main view that polishing disk is fixed in the present invention；
Fig. 3 is A-A cross-sectional view in Fig. 2；
Fig. 4 is the main view of rotating polishing discs in the present invention；
Fig. 5 is B-B cross-sectional view in Fig. 4.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instructions such as " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
It is refering to fig. 1 a kind of embodiment of the double rubbing head polishing processing devices of bioceramic spherical surface of the present invention to Fig. 5, it is a kind of
The double rubbing head polishing processing devices of bioceramic spherical surface, including station 5, left-hand screw polishing assembly 3, right-hand screw polishing assembly 4,
Fixed polishing disk 2 and Magnetorheologicai polishing liquid 6, the fixed polishing disk 2 are fixed on station 5, the left-hand screw polishing assembly 3
It is symmetricly set on station 5, that is, presses shown in the position in Fig. 1, left spiral shell about fixed polishing disk 2 with right-hand screw polishing assembly 4
The left side that polishing assembly 3 is located at fixed polishing disk 2 is revolved, right-hand screw polishing assembly 4 is located at the right side of fixed polishing disk 2, the left side
The top of helical polishing component 3 is provided with feed inlet, and the top of the right-hand screw polishing assembly 4 is provided with discharge port, the left-hand screw
Between polishing assembly 3 and the left side of fixed polishing disk 2, between right-hand screw polishing assembly 4 and the right side of fixed polishing disk 2
Equipped with single helical groove, and the starting point of single helical groove is in the center of fixed polishing disk 2, the single-screw of fixed 2 left and right sides of polishing disk
Slot starting point communicates, filled with Magnetorheologicai polishing liquid 6, the left-hand screw polishing assembly 3 and right-hand screw polishing group in the single helical groove
Magnetic field generator 8 is equipped in part 4.
For specific 3 structure of left-hand screw polishing assembly, the left-hand screw polishing assembly 3 includes driving device 11, rotation
Polishing disk 9 and helical polishing head 7, the driving device 11 are fixed on station 5, the driving of the driving device 11 rotation polishing
Disk 9 rotates, and the helical polishing head 7 is located between rotating polishing discs 9 and fixed polishing disk 2 and fixes with fixed polishing disk 2
The end face of connection, the rotating polishing discs 9 towards fixed polishing disk 2 is provided with the first helicla flute 91, opens on the helical polishing head 7
There is the second helicla flute, is provided with third helicla flute 21 on the fixed polishing disk 2 face opposite with rotating polishing discs 9, described first
Helicla flute 91, the second helicla flute and third helicla flute 21 form single helical groove, are further fixed on the magnetic on the rotating polishing discs 9
Field generator 8.
In general, the cross section of first helicla flute 91 is rectangle, the magnetic field generator 8 is fixed on the first helicla flute
In 91, the cross sections of several second helicla flutes is Gothic, the cross section of the third helicla flute 21 be it is arc-shaped, pass through
First helicla flute 91 and third helicla flute 21 are located at the two sides of the second helicla flute, form a complete single helical groove, from
And facilitates and processed.
And driving device 11 generally uses motor, drives rotating polishing discs 9 to rotate by shaft coupling 10, and left-hand screw is thrown
The rotation direction of the rotating polishing discs 9 of optical assembly 3 and the rotating polishing discs 9 of right-hand screw polishing assembly 4 in polishing is on the contrary, in this way
Polished part to be processed can be allowed to enter from side, come out from the other side.
The structure of right-hand screw polishing assembly 4 and the structure of left-hand screw polishing assembly 3 are completely the same, about solid when only installing
Determine 2 mirror settings of polishing disk.
When specific processing, the top of left-hand screw polishing assembly 3 is selected as feed inlet or discharge port, and right-hand screw polishing group
The top of part 4 is discharge port or feed inlet, and 22 connection of deflector chute at 2 top of discharge port and fixed polishing disk, passes through charging
Mouthful the Magnetorheologicai polishing liquid 6 of liquid is injected into single helical groove, starts magnetic field generator 8, generate magnetic field, liquid it is magnetorheological
Polishing fluid 6 under the influence of a magnetic field, is become the magnetorheological brush of class solid chain from liquid, spiral track is formd in single helical groove
Mark section is circular magnetorheological brush, and element 100 to be processed is put into cavity, two driving devices in starting left and right by feed inlet
11 rotations make one rotate forward a reversion, and driving two sides rotating polishing discs 9 rotate and reverse, and pass through polishing disc spins driving
Element 100 to be processed is moved along the cavity of helical trajectory, polishes element 100 to be processed by magnetorheological brush, is thrown by fixed
CD 2 be provided centrally with through-hole will the two single helical groove connection in left and right, make element 100 to be processed in the cavity at Circulated polishing
Reason reaches requirement to polishing precision, is discharged from discharge port and passes through deflector chute 22 and be drawn off.
Above is only a specific embodiment of the present invention, but technical characteristic of the invention is not limited thereto, Ren Heben
Within the field of the present invention, made changes or modifications all cover within the scope of the patent of the present invention the technical staff in field.
Claims (8)
1. a kind of double rubbing head polishing processing devices of bioceramic spherical surface, it is characterised in that: thrown including station (5), left-hand screw
Optical assembly (3), right-hand screw polishing assembly (4), fixed polishing disk (2) and Magnetorheologicai polishing liquid (6), the fixed polishing disk (2)
It is fixed on station (5), the left-hand screw polishing assembly (3) and right-hand screw polishing assembly (4) are right about fixed polishing disk (2)
Claim to be arranged on station (5), feed inlet, the right-hand screw polishing assembly are provided at the top of the left-hand screw polishing assembly (3)
(4) it is provided with discharge port at the top of, between the left-hand screw polishing assembly (3) and the left side of fixed polishing disk (2), right-hand screw throws
Single helical groove is equipped between optical assembly (4) and the right side of fixed polishing disk (2), and the starting point of single helical groove is polished fixed
The center of disk (2), the single helical groove starting point at left and right sides of fixed polishing disk (2) communicates, filled with magnetorheological in the single helical groove
Magnetic field generator (8) are equipped in polishing fluid (6), the left-hand screw polishing assembly (3) and right-hand screw polishing assembly (4).
2. the double rubbing head polishing processing devices of a kind of bioceramic spherical surface as described in claim 1, it is characterised in that: the left side
Helical polishing component (3) includes driving device (11), rotating polishing discs (9) and helical polishing head (7), the driving device (11)
It is fixed on station (5), driving device (11) driving rotating polishing discs (9) rotation, the helical polishing head (7) is located at
It is fixedly connected between rotating polishing discs (9) and fixed polishing disk (2) and with fixed polishing disk (2), the rotating polishing discs (9)
It is provided with the first helicla flute (91) towards the end face of fixed polishing disk (2), is provided with the second helicla flute on the helical polishing head (7),
It is provided with third helicla flute (21) on the fixed polishing disk (2) and rotating polishing discs (9) opposite face, first helicla flute
(91), the second helicla flute and third helicla flute (21) form single helical groove, are further fixed on the magnetic on the rotating polishing discs (9)
Field generator (8).
3. the double rubbing head polishing processing devices of a kind of bioceramic spherical surface as claimed in claim 2, it is characterised in that: described the
The cross section of one helicla flute (91) is rectangle, and the magnetic field generator (8) is fixed in the first helicla flute (91).
4. the double rubbing head polishing processing devices of a kind of bioceramic spherical surface as claimed in claim 2, it is characterised in that: the number
The cross section of second helicla flute is Gothic.
5. the double rubbing head polishing processing devices of a kind of bioceramic spherical surface as claimed in claim 2, it is characterised in that: described the
The cross section of three helicla flutes (21) is arc-shaped.
6. the double rubbing head polishing processing devices of a kind of bioceramic spherical surface as claimed in claim 2, it is characterised in that: the drive
Dynamic device (11) pass through shaft coupling (10) driving rotating polishing discs (9) rotation.
7. the double rubbing head polishing processing devices of a kind of bioceramic spherical surface as claimed in claim 2, it is characterised in that: the left side
The rotating polishing discs (9) of helical polishing component (3) and the rotating polishing discs (9) of right-hand screw polishing assembly (4) turn in polishing
It moves contrary.
8. the double rubbing head polishing processing devices of a kind of bioceramic spherical surface as described in claim 1, it is characterised in that: described solid
The top for determining polishing disk (2) is equipped with the deflector chute (22) communicated with discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648638.9A CN110340742B (en) | 2019-07-18 | 2019-07-18 | Biological ceramic sphere double-polishing-head polishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648638.9A CN110340742B (en) | 2019-07-18 | 2019-07-18 | Biological ceramic sphere double-polishing-head polishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110340742A true CN110340742A (en) | 2019-10-18 |
| CN110340742B CN110340742B (en) | 2021-08-27 |
Family
ID=68178733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910648638.9A Active CN110340742B (en) | 2019-07-18 | 2019-07-18 | Biological ceramic sphere double-polishing-head polishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110340742B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113635169A (en) * | 2021-08-10 | 2021-11-12 | 江苏吉星新材料有限公司 | Burr trimming mechanism and polishing device |
| CN113732874A (en) * | 2021-11-02 | 2021-12-03 | 杭州高卡机械有限公司 | Device for manufacturing fine beads |
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| SU522949A1 (en) * | 1974-09-17 | 1976-07-30 | Витебский Станкостроительный Завод Им.С.М.Кирова | Ball Finishing Device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113635169A (en) * | 2021-08-10 | 2021-11-12 | 江苏吉星新材料有限公司 | Burr trimming mechanism and polishing device |
| CN113732874A (en) * | 2021-11-02 | 2021-12-03 | 杭州高卡机械有限公司 | Device for manufacturing fine beads |
| CN113732874B (en) * | 2021-11-02 | 2022-02-11 | 杭州高卡机械有限公司 | Device for manufacturing fine beads |
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| Publication number | Publication date |
|---|---|
| CN110340742B (en) | 2021-08-27 |
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Denomination of invention: A polishing device for bioceramic spherical surface with double polishing heads Effective date of registration: 20221205 Granted publication date: 20210827 Pledgee: Industrial and Commercial Bank of China Limited Jinhua Branch Pledgor: CANWELL MEDICAL Co.,Ltd. Registration number: Y2022330003493 |
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Date of cancellation: 20231205 Granted publication date: 20210827 Pledgee: Industrial and Commercial Bank of China Limited Jinhua Branch Pledgor: CANWELL MEDICAL Co.,Ltd. Registration number: Y2022330003493 |
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Denomination of invention: A Bioceramic Spherical Double Polishing Head Polishing Device Granted publication date: 20210827 Pledgee: Industrial and Commercial Bank of China Limited Jinhua Branch Pledgor: CANWELL MEDICAL Co.,Ltd. Registration number: Y2024980000673 |
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