CN111843627A - Polishing method and polishing device based on magnetic composite fluid - Google Patents
Polishing method and polishing device based on magnetic composite fluid Download PDFInfo
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- CN111843627A CN111843627A CN202010691519.4A CN202010691519A CN111843627A CN 111843627 A CN111843627 A CN 111843627A CN 202010691519 A CN202010691519 A CN 202010691519A CN 111843627 A CN111843627 A CN 111843627A
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- composite fluid
- driving element
- fluid
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 201
- 238000005498 polishing Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000012530 fluid Substances 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 40
- 239000011553 magnetic fluid Substances 0.000 claims abstract description 19
- 239000003082 abrasive agent Substances 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 15
- 230000033001 locomotion Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 description 4
- 239000006061 abrasive grain Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005298 paramagnetic effect Effects 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a polishing method and a polishing device based on magnetic composite fluid, wherein the polishing method comprises the steps of arranging a tubular body to be polished, adding abrasive into the tubular body, and arranging a magnetic field to enable the magnetic fluid to form a magnetic chain brush and roll relative to the inner wall of the tubular body; the polishing device comprises a tubular body, a first driving element and a magnetic body, wherein the tubular body rotates on the basis of the axis of the tubular body, a magnetic fluid and abrasive particles are arranged in the tubular body, the magnetic fluid forms a magnetic chain brush under the action of a magnetic field, the abrasive particles are clamped at the top end and the lower portion of the magnetic chain brush, and in the process that the magnetic chain brush rolls in the tubular body, the abrasive particles and the inner wall of the tubular body generate relative motion, so that the polishing of the inner wall of the tubular body is realized. The polishing method and the polishing device are not limited by the aperture size of the tubular body and the internal structure of the tubular body, have good polishing effect, are convenient to clean and are convenient and fast to process.
Description
Technical Field
The invention relates to the technical field of polishing and automatic processing, in particular to a polishing method and a polishing device based on magnetic composite fluid.
Background
With the development of industrial production and science and technology, the precision requirements of aerospace, medical instruments and military industries on workpieces are continuously improved, and particularly high-precision pipe fittings have high requirements on the roughness of the inner walls and the outer surfaces of the pipe fittings.
In the traditional processing method, the roughness of the workpiece is reduced by polishing, so that the surface of the workpiece is smoother, and the use requirement of the workpiece is met. Due to the limitation of the use environment, the aperture of a plurality of pipe fittings is small, common tools are difficult to intervene, the polishing difficulty is high, and the roughness of the inner wall of a workpiece cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a polishing method and a polishing device based on magnetic composite fluid, so as to overcome the defects of high polishing difficulty and low smoothness of a pipe fitting.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a polishing method based on magnetic composite fluid comprises the following steps,
providing a tubular body to be polished;
adding an abrasive material into the tubular body, wherein the abrasive material comprises magnetic fluid and abrasive particles;
and setting a magnetic field, so that the magnetic fluid forms a magnetic chain brush and rolls relative to the inner wall of the tubular body, and the abrasive particles roll along the magnetic chain brush to polish the tubular body.
In a preferred embodiment, the method of rolling the magnetic link brush against the inner wall of the tubular body comprises: the tubular body rotates based on an axis of the tubular body.
In a preferred embodiment, the method of generating the magnetic field is: providing a magnetic body that generates a magnetic field, the tubular body being located within the magnetic field.
In a preferred embodiment, the method of rolling the magnetic link brush against the inner wall of the tubular body comprises: a magnetic field with changing magnetic induction lines is set, and the tubular body is placed in the magnetic field.
In a preferred embodiment, the method of generating the magnetic field with the changed magnetic induction lines comprises the following steps: a magnetic body is provided, which rotates in a direction parallel to the axis of the tubular body.
In a preferred embodiment, the magnetic link brush is reciprocated in the axial direction of the tubular body.
In a preferred embodiment, the method of reciprocating the magnetic link brush in the axial direction of the tubular body is: and a driving part is arranged, and the driving part is connected with the magnetic body and/or the tubular body and drives the magnetic body and/or the tubular body to move along the axis of the tubular body.
The invention also provides a polishing device based on the magnetic composite fluid, which comprises a tubular body, a first driving element and a magnetic body, wherein the first driving element is used for driving the magnetic body or the tubular body to be polished to rotate, the magnetic body is arranged on the side part of the tubular body, and an abrasive material is arranged in the tubular body and comprises magnetic fluid and abrasive particles.
In a preferred embodiment, the device further comprises a second driving element, wherein the second driving element is connected with the magnetic body and drives the magnetic body to rotate around a direction parallel to the axis of the tubular body, and the tubular body and the magnetic body rotate in the same direction.
In a preferred embodiment, the second driving element drives the magnetic body to move in a direction parallel to an axial direction of the tubular body.
In a preferred embodiment, the magnetic body further comprises a base, the first driving element and the second driving element are mounted on the base, a first clamp is mounted on the first driving element and used for clamping the tubular body, and a second clamp is mounted on the second driving element and used for clamping the magnetic body.
In a preferred embodiment, the abrasive further comprises magnetosensitive particles.
In a preferred embodiment, the abrasive further comprises alpha-cellulose.
The invention has at least the following beneficial effects:
the magnetic fluid and the abrasive particles are arranged in the tubular body, the magnetic fluid forms a magnetic linkage brush under the action of a magnetic field, the abrasive particles are clamped at the top end and the lower portion of the magnetic linkage brush, and in the process that the magnetic linkage brush rolls in the tubular body, the abrasive particles and the inner wall of the tubular body generate relative motion, so that the inner wall of the tubular body is polished. The polishing method and the polishing device are not limited by the aperture size of the tubular body and the internal structure of the tubular body, have good polishing effect, are convenient to clean and are convenient and fast to process.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a flow chart of one embodiment of a magnetic composite fluid-based polishing method;
FIG. 2 is a schematic diagram of an embodiment of a magnetic composite fluid-based polishing apparatus.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The technical characteristics of the invention can be combined interactively on the premise of not conflicting with each other.
First embodiment
In view of the problem of difficulty in polishing small-bore pipes, the present embodiment provides a polishing method based on a magnetic composite fluid, comprising the following steps:
referring to fig. 1, first, a tubular body to be polished is provided, and an abrasive including magnetic fluid and abrasive grains is thrown into the tubular body from an end surface thereof; then setting a magnetic field, wherein the tubular body is positioned in the magnetic field, and the paramagnetic micro powder in the magnetic fluid is magnetized along the direction of magnetic lines in the magnetic field and is arranged along the direction of the magnetic lines to form a magnetic chain brush which is similar to a solid shape and has certain rigidity and is attached to the inner surface of the tubular body; the abrasive particles are clamped at the top end and the lower part of the magnetic chain brush under the action of a magnetic field and are kept fixed relative to the magnetic chain brush; along with the rolling of the magnetic chain brush in the tubular body, the abrasive particles and the inner wall of the tubular body generate relative motion and continuously rub the inner wall of the tubular body, so that the polishing treatment of the inner wall of the tubular body is completed. The abrasive particles can also comprise magnetic-sensitive particles, and the magnetic-sensitive particles can enhance the strength of the magnetic chain brush and optimize the polishing effect.
The polishing method in the embodiment is not limited by the internal shape and the aperture size of the tubular body, the magnetic linkage brush can change along with the change of the internal shape of the pipe fitting, has good flexibility, can reach any part of a workpiece, and overcomes the problem that the internal roughness of the pipe fitting is limited due to the small aperture of the pipe fitting; and the abrasive material is liquid, and after finishing polishing, the accessible is blown or is washd remaining abrasive material, and processing is comparatively convenient.
The method for generating the magnetic field comprises the following steps: a magnetic body is provided, and the magnetic body generates a magnetic field to magnetize the magnetic fluid in the direction of the magnetic force line. The magnetic body may be a permanent magnet or an electromagnet, and the magnetic body in this embodiment is a permanent magnet.
The method of rolling the magnetic chain brush inside the tubular body is as follows: the tubular body is rotated based on an axis of the tubular body. In the rotating process of the tubular body, the magnetic chain brush is violently rolled in the tubular body under the action of centrifugal force, magnetic force and friction force, so that the inner wall of the tubular body is efficiently polished.
Second embodiment
This embodiment is different from the first embodiment in that the rolling of the flux linkage brush inside the tubular body is realized by providing a magnetic field in which the magnetic lines of force vary. Because the magnetic chain brushes are arranged along the direction of the magnetic force lines, when the magnetic force lines of the magnetic field change, the arrangement direction of the magnetic chain brushes changes simultaneously, and relative motion is generated between the abrasive particles and the inner wall of the tubular body, so that the polishing of the inner wall of the tubular body by the abrasive particles is realized.
In order to improve the rolling strength and polishing effect of the magnetic chain brush inside the tubular body, the method of realizing the rolling of the magnetic chain brush in the first embodiment and the second embodiment may be combined, that is, the rotating tubular body is placed in the magnetic field with the changing magnetic force lines. The grinding material inside the tubular body rolls continuously and is combined again to form a new magnetic brush, the form of the grinding material which is relatively fixed is changed, the grinding particles tightly attached to the wall surface of the tubular body are updated continuously, the grinding particles are kept sharp, the friction between the grinding particles and the inner wall of the tubular body is increased along with the rotation of the tubular body, the polishing strength of the grinding particles to the inner wall of the tubular body is enhanced, the utilization rate of the grinding particles is improved, and the polishing effect of the inner wall of the tubular body is improved.
The method for generating the magnetic field with the changed magnetic force line comprises the following steps: the magnetic body is arranged and rotated in a direction parallel to the axis of the tubular body, and the direction of the magnetic lines of force generated by the magnetic body is changed along with the rotation of the magnetic body. The magnetic body may be provided as a permanent magnet, and the method of providing a magnetic field in which the magnetic lines of force vary is not limited to this, and the relative position between the magnetic body and the tubular body may also be varied.
Third embodiment
In addition to the first and second embodiments, the magnetic brush in the present embodiment can be repeatedly moved along the axis of the tubular body in the tubular body. The magnetic chain brush can polish every part of the inner wall of the tubular body through which the magnetic chain brush passes by moving in the tubular body, so that the polishing effect of the abrasive on the tubular body is optimized; and the magnetic chain brush repeatedly polishes the inner wall of the tubular body through the reciprocating movement of the magnetic chain brush in the tubular body, so that the polishing precision and the polishing finish of the inner wall of the tubular body are improved.
The method for reciprocating the magnetic chain brush along the axial direction of the tubular body comprises the following steps: and the driving part is connected with the magnetic body and/or the tubular body and drives the magnetic body and the tubular body to move relatively along the axis direction of the tubular body, so that the magnetic linkage brush positioned in the tubular body performs reciprocating movement relative to the axis of the tubular body under the action of magnetic force.
Referring to fig. 2, the present invention further provides a polishing apparatus based on a magnetic composite fluid, the apparatus including a first driving element 20 and a magnetic body 10, the first driving element 20 is used for driving a tubular body 30 to be polished to rotate, the magnetic body 10 is used for generating a magnetic field, and an abrasive for polishing is disposed inside the tubular body 30. Specifically, the tubular body 30 is fixed on the first driving element 20, so that the tubular body 30 rotates under the driving action of the first driving element 20; the tubular body 30 is arranged in a magnetic field generated by the magnetic body 10, the abrasive material comprises magnetic fluid and abrasive particles, paramagnetic micro powder in the magnetic fluid is magnetized along the direction of magnetic force lines to form a magnetic chain brush, the abrasive particles are clamped at the top end and the lower part of the magnetic chain brush under the action of the magnetic field, and the abrasive particles and the inner wall of the tubular body 30 generate relative motion along with the rotation of the tubular body 30 to polish the inner wall of the tubular body 30; the abrasive particles also comprise magnetic-sensitive particles, and the magnetic-sensitive particles can enhance the strength of the magnetic chain brush and optimize the polishing effect.
Still include second drive element 40, second drive element 40 is connected with magnetic substance 10 and drives magnetic substance 10 and rotate around the direction parallel with the axis of siphonozooid 30, when magnetic substance 10 rotated, the magnetic line of force changes, the inside magnetic chain brush of siphonozooid 30 is rearranged along with the change of magnetic line of force direction, the rotation that abrasive material followed siphonozooid 30 constantly rolls in the inside of siphonozooid 30, the grit constantly updates, make the grit of hugging closely siphonozooid 30 internal face constantly carry out the metabolism, keep the self-sharpening of grit, improve polishing effect.
The rotation directions of the tubular body 30 and the magnetic body 10 are the same, so that the movement direction of the magnetic chain brush inside the tubular body 30 is opposite to the rotation direction of the tubular body 30, the friction strength between the abrasive particles and the inner wall of the tubular body 30 is enhanced, and the polishing efficiency of the abrasive particles on the inner wall of the tubular body 30 is improved.
The second driving element 40 can also drive the magnetic body 10 to reciprocate along the direction parallel to the axis of the tubular body 30, so that the magnetic chain brush moves in the interior of the tubular body 30 along with the movement of the magnetic body 10, and the abrasive particles polish different parts of the inner wall of the tubular body 30 along with the rolling of the abrasive in the interior of the tubular body 30, thereby optimizing the polishing effect. The abrasive grains repeatedly polish the inner wall of the tubular body 30 following the reciprocating movement of the magnetic body 10, and the polishing effect of the abrasive grains on the tubular body 30 is further improved.
The relative movement between the magnetic body 10 and the tubular body 30 is not limited to this, for example, the first driving element 20 can drive the tubular body 30 to move along the axis of the tubular body 30, and the magnetic body 10 is kept fixed to realize the relative movement between the tubular body 30 and the magnetic body 10; or the first driving element 20 drives the tubular body 30 to move along the axis of the tubular body 30, and the second driving element 40 drives the magnetic body 10 to move along the direction parallel to the axis of the tubular body 30, the moving directions of the tubular body 30 and the magnetic body 10 are opposite, and the relative motion of the two is also realized, so that the magnetic chain brush moves back and forth in the interior of the tubular body 30.
The magnetic driving device further includes a base 50, the first driving element 20 and the second driving element 40 are mounted on the base 50, the first driving element 20 and the second driving element 40 in this embodiment are distributed on two sides of the base 50, and the magnetic body 10 is located on a side portion of the tubular body 30. The first driving element 20 is also provided with a first clamp 60, the first clamp 60 being used for clamping the tubular body 30; the second driving element 40 is further provided with a second clamp 70, and the second clamp 70 is used for clamping the magnetic body 10 to realize the relative fixation between the magnetic body 10 and the second driving element 40 and the relative fixation between the tubular body 30 and the first driving element 20. The distance between the outer surface of the magnetic body 10 and the outer surface of the tubular body 30 is 1mm-10mm, which ensures that the tubular body 30 has enough magnetic field strength, so that the abrasive particles can polish the tubular body 30 under the action of enough magnetic field force.
The first drive element 20 may be a dc motor and the second drive element 40 may be a stepper motor, the first drive element 20 having a maximum rotational speed of 6000r/min and the second drive element 40 having a maximum rotational speed of 2500 r/min. The preferred rotation speed of tubular body 30 is 4000r/min and the preferred rotation speed of magnetic body 10 is 600 r/min. The second clamp 70 may be a three-jaw chuck, a screw rod is mounted on the second driving element 40, and the magnetic body 10 is fixed on the screw rod, so that the magnetic body 10 is driven by the second driving element 40 to move along a direction parallel to the tubular body 30; alternatively, the second driving element 40 is slidably mounted on the base 50, and the second driving element 40 can move on the base 50 along the axial direction of the tubular body 30, so that the second driving element 40 drives the magnetic body 10 to rotate and simultaneously drives the magnetic body 10 to move. Two first clamps 60 are arranged on the base 50 to clamp the tubular body 30, and the two first clamps 60 are respectively arranged at two ends of the tubular body 30 to realize the relative fixation of the tubular body 30 and the base 50, so that the tubular body 30 is kept balanced and stable in the polishing process, and the polishing effect is optimized. The tubular body 30 may be a small bore and non-magnetic tubule, slender tube, capillary tube, straight tube, or bent tube.
The magnetic body 10 may be a permanent magnet or an electromagnet, and the magnetic body 10 in this embodiment is a permanent magnet, such as a square magnet or a circular cylindrical magnet; because the annular cylindrical magnet is in the rotation process, the magnetic line of force produces periodic variation, and magnetic field intensity is even, has better polishing effect, preferably annular cylindrical magnet, and the material is neodymium iron boron and magnetizes along the diameter direction.
The magnetic fluid is base fluid of magnetic composite fluid grinding, and is preferably water-based suspension of nano ferroferric oxide particles with good flowing property. The abrasive particles can be micron-sized aluminum oxide particles or diamond powder, have high hardness, can polish the inner wall of the tubular body 30, are circular, cannot scratch the inner wall of the tubular body 30 during polishing, and preferably have a diameter of 3-7 microns. The magnetic sensitive particles can be micron-sized carbonyl iron powder which is dispersed in the magnetic fluid, so that the strength of the magnetic linkage brush can be enhanced, the shear yield stress and the material removal rate of the magnetic linkage brush are improved, and the polishing effect is optimized; and the carbonyl iron powder has high magnetic conductivity and low magnetic coercive force, and can meet the rheological property requirement of the magnetic fluid. The abrasive also comprises alpha-cellulose, and the alpha-cellulose can be interwoven in the magnetic chain brush to improve the strength and the toughness of the magnetic chain brush.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (13)
1. A polishing method based on magnetic composite fluid is characterized by comprising the following steps,
providing a tubular body to be polished;
adding an abrasive material into the tubular body, wherein the abrasive material comprises magnetic fluid and abrasive particles;
and setting a magnetic field, so that the magnetic fluid forms a magnetic chain brush and rolls relative to the inner wall of the tubular body, and the abrasive particles roll along the magnetic chain brush to polish the tubular body.
2. The magnetic composite fluid-based polishing method according to claim 1, wherein the method of rolling the magnetic link brush against the inner wall of the tubular body is: the tubular body rotates based on an axis of the tubular body.
3. The magnetic composite fluid-based polishing method of claim 1, wherein the magnetic field is generated by: providing a magnetic body that generates a magnetic field, the tubular body being located within the magnetic field.
4. The magnetic composite fluid-based polishing method according to any one of claims 1 to 3, wherein the method of rolling the magnetic linkage brush against the inner wall of the tubular body is: a magnetic field with changing magnetic induction lines is set, and the tubular body is placed in the magnetic field.
5. The magnetic composite fluid-based polishing method according to claim 4, wherein the magnetic field method for generating the variation of magnetic induction lines is: a magnetic body is provided, which rotates in a direction parallel to the axis of the tubular body.
6. The magnetic composite fluid-based polishing method according to claim 3 or 5, wherein the magnetic link brush is reciprocated in the axial direction of the tubular body.
7. The magnetic composite fluid-based polishing method according to claim 6, wherein the method of reciprocating the magnetic link brush in the axial direction of the tubular body is: and a driving part is arranged, and the driving part is connected with the magnetic body and/or the tubular body and drives the magnetic body and/or the tubular body to move along the axis of the tubular body.
8. The polishing device based on the magnetic composite fluid is characterized by comprising a tubular body, a first driving element and a magnetic body, wherein the first driving element is used for driving the magnetic body or the tubular body to be polished to rotate, the magnetic body is arranged on the side portion of the tubular body, abrasive materials are arranged inside the tubular body, and the abrasive materials comprise magnetic fluid and abrasive particles.
9. The magnetic composite fluid-based polishing device according to claim 8, further comprising a second driving element connected to the magnetic body and driving the magnetic body to rotate in a direction parallel to an axis of the tubular body, the tubular body and the magnetic body rotating in the same direction.
10. The magnetic composite fluid-based polishing device according to claim 9, wherein the second driving element drives the magnetic body to move in a direction parallel to the axial direction of the tubular body.
11. The magnetic composite fluid-based polishing apparatus according to claim 9, further comprising a base, wherein the first driving element and the second driving element are mounted on the base, the first driving element having a first holder mounted thereon for holding the tubular body, the second driving element having a second holder mounted thereon for holding the magnetic body.
12. The magnetic composite fluid-based polishing device of claim 8, wherein the abrasive further comprises magnetically sensitive particles.
13. The magnetic composite fluid-based polishing device of claim 9, wherein the abrasive further comprises alpha-cellulose.
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| CN202010691519.4A CN111843627A (en) | 2020-07-17 | 2020-07-17 | Polishing method and polishing device based on magnetic composite fluid |
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| CN202010691519.4A CN111843627A (en) | 2020-07-17 | 2020-07-17 | Polishing method and polishing device based on magnetic composite fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115194563A (en) * | 2022-06-27 | 2022-10-18 | 深圳市恒永达科技股份有限公司 | System and method for controlling polishing of magnetic fluid on inner wall of capillary tube |
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| CN213106270U (en) * | 2020-07-17 | 2021-05-04 | 南方科技大学 | Polishing device based on magnetic composite fluid |
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| CN115194563A (en) * | 2022-06-27 | 2022-10-18 | 深圳市恒永达科技股份有限公司 | System and method for controlling polishing of magnetic fluid on inner wall of capillary tube |
| CN115194563B (en) * | 2022-06-27 | 2023-04-28 | 深圳市恒永达科技股份有限公司 | Magnetic fluid polishing control system and method for inner wall of capillary tube |
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