CN111360589A - Medical micro screw magneto-rheological polishing device - Google Patents
Medical micro screw magneto-rheological polishing device Download PDFInfo
- Publication number
- CN111360589A CN111360589A CN202010252713.2A CN202010252713A CN111360589A CN 111360589 A CN111360589 A CN 111360589A CN 202010252713 A CN202010252713 A CN 202010252713A CN 111360589 A CN111360589 A CN 111360589A
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- China
- Prior art keywords
- wall
- vessel
- polishing
- motor
- magneto
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- Granted
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 55
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 229910001069 Ti alloy Inorganic materials 0.000 description 4
- 239000007943 implant Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Images
Classifications
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- 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
- 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
-
- 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
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
-
- 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
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a medical micro-screw magneto-rheological polishing device which comprises a vessel, magneto-rheological polishing liquid, a magnetic field generator and a first motor, wherein a processing cavity is formed in the vessel, the magneto-rheological polishing liquid is positioned in the processing cavity, the bottom of the vessel is connected with a motor shaft of the first motor, the vessel is driven to rotate by the first motor, and the magnetic field generator is arranged below the vessel; the processing chamber includes diapire and lateral wall, the diapire level sets up, the lateral wall is including erecting wall, skew wall and circular arc wall, the skew wall is located and erects the wall below, be connected through the circular arc wall between skew wall and the diapire, the skew wall is 45 degrees ~ 60 degrees with the horizontal plane contained angle, the center of diapire is equipped with the round platform. The invention has the advantages that: the medical micro screw in the vessel rubs with the magnetorheological fluid which is converted into a solid state by the magnetic field generator, so that the surface of the medical micro screw is finely ground.
Description
Technical Field
The invention relates to a medical micro-screw magneto-rheological polishing device.
Background
At present, medical intramedullary nails, bone screws and the like are mostly made of titanium alloy materials, and the titanium alloy implant materials have the main problems of corrosion, on one hand, corrosion products enter human bodies due to corrosion, and serious physiological hazards such as tissue poisoning, cell distortion and the like are caused; on the other hand, the failure behaviors of loosening, early fracture and the like of the implanted prosthesis are caused. The corrosion resistance of titanium alloys decreases with the increase of their surface roughness, wherein smooth and micro-rough surfaces have good corrosion resistance and lower ion release rate. Therefore, it is necessary to perform proper surface finishing treatment on the medical titanium alloy screw implant.
Disclosure of Invention
The invention aims to provide a magnetorheological polishing device for a medical miniature screw, which can effectively solve the problem that the surface of the existing medical miniature screw is difficult to polish.
In order to solve the technical problems, the invention is realized by the following technical scheme: the medical micro screw magneto-rheological polishing device comprises a vessel, magneto-rheological polishing liquid, a magnetic field generator and a first motor, wherein a processing cavity is formed in the vessel, the magneto-rheological polishing liquid is positioned in the processing cavity, the bottom of the vessel is connected with a motor shaft of the first motor, the vessel is driven to rotate by the first motor, and the magnetic field generator is arranged below the vessel;
the processing chamber includes diapire and lateral wall, the diapire level sets up, the lateral wall is including erecting wall, skew wall and circular arc wall, the skew wall is located and erects the wall below, be connected through the circular arc wall between skew wall and the diapire, the skew wall is 45 degrees ~ 60 degrees with the horizontal plane contained angle, the center of diapire is equipped with the round platform.
Preferably, the circular truncated cone is large in top and small in bottom, and the height of the circular truncated cone is higher than the lowest point of the vertical wall, so that the stability of rotary polishing is guaranteed.
Preferably, the magnetic field generator is fixed on the support, the support is connected with a second motor for driving the support to rotate, the rotation axis of the support is overlapped with the rotation axis of the vessel, the second motor drives the magnetic field generator to rotate, the relative movement speed of the magnetorheological polishing solution converted into the solid state by the magnetic field and the medical miniature screw is increased, and therefore the polishing efficiency is improved.
Preferably, the support is a U-shaped frame, and magnetic field generators are fixed on two sides of the top end of the support, so that the magnetic field generators avoid the first motor, and the distance between the magnetic field generators and the vessel is reduced.
Preferably, the magnetorheological polishing solution comprises magnetorheological fluid, polishing particles and polishing needles, the magnetorheological fluid, the polishing particles and the polishing needles are uniformly mixed, the magnetorheological fluid is converted into a solid state under the action of a magnetic field, and the polishing particles and the polishing needles are mixed in the magnetorheological fluid, so that the surface of the mold is polished better, and a better polishing effect is achieved.
Compared with the prior art, the invention has the advantages that: the first motor drives the vessel to rotate, so that the medical micro screw in the vessel rubs the magnetorheological fluid which is converted into a solid state by the magnetic field generator, the surface of the medical micro screw is finely ground, and the friction between the medical micro screw and the magnetorheological polishing fluid is further improved by continuously stirring the side wall arranged in the processing cavity, so that the polishing efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of a magnetorheological polishing device for a medical minisize screw according to the invention in a non-working state;
FIG. 2 is a schematic structural view of the medical micro-screw magnetorheological polishing device in a working state.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, an embodiment of the medical micro screw magnetorheological polishing device of the invention is shown, and the medical micro screw magnetorheological polishing device comprises a vessel 1, magnetorheological polishing liquid 16, a magnetic field generator 2 and a first motor 5, wherein a processing cavity is formed in the vessel 1, the magnetorheological polishing liquid 16 is located in the processing cavity, the bottom of the vessel 1 is connected with a motor shaft of the first motor 5, the vessel 1 is driven to rotate by the first motor 5, and the magnetic field generator 2 is arranged below the vessel 1;
the processing chamber includes diapire 13 and lateral wall, diapire 13 level sets up, the lateral wall includes vertical wall 14, skew wall 11 and circular arc wall 12, skew wall 11 is located vertical wall 14 below, be connected through circular arc wall 12 between skew wall 11 and the diapire 13, skew wall 11 and horizontal plane contained angle are 45 degrees ~ 60 degrees, and the too little performance ability weak of contact surface of inclination too big, and the too little throwing away magnetorheological suspensions 7 and medical miniature screw when rotatory of obliquity, the center of diapire 13 is equipped with round platform 15.
The vessel 1 is driven to rotate by the first motor 5, so that the medical micro screw in the vessel 1 rubs against the magnetorheological fluid 7 which is converted into a solid state by the magnetic field generator 2, the surface of the medical micro screw is finely ground, and the friction between the medical micro screw and the magnetorheological polishing fluid 16 is further improved by continuously stirring the side wall arranged in the processing cavity, so that the polishing efficiency is improved.
The round platform 15 is fixed at the center of the bottom wall 13 in a large-sized manner, the round platform 15 and the vessel 1 are generally manufactured integrally, and the height of the round platform 15 is higher than the lowest point of the vertical wall 14.
In order to improve the polishing efficiency, the magnetic field generator 2 is fixed on the support 3, the support 3 is connected with a second motor 4 for driving the support 3 to rotate, the rotation axis of the support 3 coincides with the rotation axis of the vessel 1, the support 3 is a U-shaped frame, the magnetic field generator 2 is fixed on both sides of the top end of the support 3, and the first motor 5 can be accommodated in the middle of the U-shaped frame, so that the distance between the magnetic field generator 2 and the vessel 1 is shortened, and the polishing efficiency is improved.
The magnetorheological polishing liquid 16 generally comprises magnetorheological fluid 7, polishing particles 8 and polishing needles 6, the specifications of the polishing particles 8 and the polishing needles 6 are adjusted according to the requirements of the roughness of the surface of a die to be polished, and the proportions of the polishing particles 8, the polishing needles 6 and the magnetorheological fluid 7 can be determined after accounting according to the processing cost.
As shown in fig. 2, the working state is two, one is that only the first motor 5 is started, the first motor 5 drives the vessel 1 to rotate, and the magnetorheological polishing solution 16 in the processing cavity forms a solid magnetic beam brush under the action of the magnetic field generator 2 to polish the medical miniature screw 100 in the processing cavity; the second is to start the second motor 4 on the basis of the first one, so as to rotate the magnetic field generator 2, thereby increasing the relative speed between the magnetic brush and the medical miniature screw 100, and improving the polishing efficiency, wherein the rotating direction of the first motor 5 is opposite to that of the second motor 4.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (5)
1. Medical miniature screw magnetic current becomes burnishing device which characterized in that: the magnetorheological polishing fluid polishing device comprises a vessel (1), magnetorheological polishing fluid (16), a magnetic field generator (2) and a first motor (5), wherein a processing cavity is formed in the vessel (1), the magnetorheological polishing fluid (16) is positioned in the processing cavity, the bottom of the vessel (1) is connected with a motor shaft of the first motor (5), the vessel (1) is driven to rotate by the first motor (5), and the magnetic field generator (2) is arranged below the vessel (1);
the processing chamber includes diapire (13) and lateral wall, diapire (13) level sets up, the lateral wall is including erecting wall (14), skew wall (11) and circular arc wall (12), skew wall (11) are located and erect wall (14) below, be connected through circular arc wall (12) between skew wall (11) and diapire (13), skew wall (11) are 45 degrees ~ 60 degrees with the horizontal plane contained angle, the center of diapire (13) is equipped with round platform (15).
2. The medical minisize screw magneto-rheological polishing device as set forth in claim 1, wherein: the round platform (15) is big end down, and the height of round platform (15) is higher than the minimum of erecting wall (14).
3. The medical minisize screw magneto-rheological polishing device as set forth in claim 1, wherein: the magnetic field generator (2) is fixed on the support (3), a second motor (4) for driving the support (3) to rotate is connected to the support (3), and the rotation axis of the support (3) coincides with the rotation axis of the vessel (1).
4. The medical minisize screw magneto-rheological polishing device as set forth in claim 3, wherein: the support (3) is a U-shaped frame, and the magnetic field generators (2) are fixed on two sides of the top end of the support (3).
5. The medical minisize screw magneto-rheological polishing device as set forth in claim 1, wherein: the magnetorheological polishing liquid (16) comprises magnetorheological fluid (7), polishing particles (8) and a polishing needle (6), and the magnetorheological fluid (7), the polishing particles (8) and the polishing needle (6) are uniformly mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010252713.2A CN111360589B (en) | 2020-03-27 | 2020-03-27 | Medical micro screw magneto-rheological polishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010252713.2A CN111360589B (en) | 2020-03-27 | 2020-03-27 | Medical micro screw magneto-rheological polishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111360589A true CN111360589A (en) | 2020-07-03 |
| CN111360589B CN111360589B (en) | 2021-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010252713.2A Active CN111360589B (en) | 2020-03-27 | 2020-03-27 | Medical micro screw magneto-rheological polishing device |
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| Country | Link |
|---|---|
| CN (1) | CN111360589B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114211404A (en) * | 2021-11-25 | 2022-03-22 | 浙江康飞思医疗科技有限公司 | Magnetic jet polishing machine for medical bone grafting forming plate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3651606A (en) * | 1968-02-26 | 1972-03-28 | Continental Can Co | Margin preparation machine |
| SU712236A1 (en) * | 1978-04-26 | 1980-01-30 | Сумский Филиал Харьковского Политехнического Института Им. Ленина | Container for three-dimensional abrasive working of parts |
| SU1060438A1 (en) * | 1982-05-11 | 1983-12-15 | Пензенский Политехнический Институт | Container for three-dimensional abrasive working |
| TW200827096A (en) * | 2006-12-26 | 2008-07-01 | Univ Nat Pingtung Sci & Tech | Pulverizing apparatus |
| CN204248629U (en) * | 2014-07-24 | 2015-04-08 | 凤城市大方增压器有限公司 | A kind of workpiece cleaner |
| CN106425699A (en) * | 2016-09-22 | 2017-02-22 | 浙江师范大学 | Magnetorheological polishing machine for small-size part |
| CN206029573U (en) * | 2016-08-30 | 2017-03-22 | 广州市瑞晖铸造机械有限公司 | Tray formula magnetic force burnishing machine |
| DE102015218005A1 (en) * | 2015-09-18 | 2017-03-23 | Festo Ag & Co. Kg | Device for processing and / or treating a workpiece and / or material |
| CN108296885A (en) * | 2017-01-13 | 2018-07-20 | 昆山纳诺新材料科技有限公司 | Magnetorheological three-dimensional burnishing device and Magnetorheologicai polishing liquid |
-
2020
- 2020-03-27 CN CN202010252713.2A patent/CN111360589B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3651606A (en) * | 1968-02-26 | 1972-03-28 | Continental Can Co | Margin preparation machine |
| SU712236A1 (en) * | 1978-04-26 | 1980-01-30 | Сумский Филиал Харьковского Политехнического Института Им. Ленина | Container for three-dimensional abrasive working of parts |
| SU1060438A1 (en) * | 1982-05-11 | 1983-12-15 | Пензенский Политехнический Институт | Container for three-dimensional abrasive working |
| TW200827096A (en) * | 2006-12-26 | 2008-07-01 | Univ Nat Pingtung Sci & Tech | Pulverizing apparatus |
| CN204248629U (en) * | 2014-07-24 | 2015-04-08 | 凤城市大方增压器有限公司 | A kind of workpiece cleaner |
| DE102015218005A1 (en) * | 2015-09-18 | 2017-03-23 | Festo Ag & Co. Kg | Device for processing and / or treating a workpiece and / or material |
| CN206029573U (en) * | 2016-08-30 | 2017-03-22 | 广州市瑞晖铸造机械有限公司 | Tray formula magnetic force burnishing machine |
| CN106425699A (en) * | 2016-09-22 | 2017-02-22 | 浙江师范大学 | Magnetorheological polishing machine for small-size part |
| CN108296885A (en) * | 2017-01-13 | 2018-07-20 | 昆山纳诺新材料科技有限公司 | Magnetorheological three-dimensional burnishing device and Magnetorheologicai polishing liquid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114211404A (en) * | 2021-11-25 | 2022-03-22 | 浙江康飞思医疗科技有限公司 | Magnetic jet polishing machine for medical bone grafting forming plate |
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| Publication number | Publication date |
|---|---|
| CN111360589B (en) | 2021-08-17 |
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Effective date of registration: 20220620 Address after: 321016 No. 466, Xianhua South Street, Jinhua City, Zhejiang Province Patentee after: CANWELL MEDICAL Co.,Ltd. Address before: Taizhou University, 1139 Shifu Avenue, Taizhou, Zhejiang 318000 Patentee before: TAIZHOU University |
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Application publication date: 20200703 Assignee: Zhejiang Kangfeishi Medical Technology Co.,Ltd. Assignor: CANWELL MEDICAL Co.,Ltd. Contract record no.: X2023980049015 Denomination of invention: Medical micro screw magnetorheological polishing device Granted publication date: 20210817 License type: Common License Record date: 20231129 |