CN108274306B - Magnetorheological polishing device for efficient high-precision ceramic balls - Google Patents
Magnetorheological polishing device for efficient high-precision ceramic balls Download PDFInfo
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- CN108274306B CN108274306B CN201711412761.8A CN201711412761A CN108274306B CN 108274306 B CN108274306 B CN 108274306B CN 201711412761 A CN201711412761 A CN 201711412761A CN 108274306 B CN108274306 B CN 108274306B
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- ring sleeve
- ceramic balls
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- 238000005498 polishing Methods 0.000 title claims abstract description 98
- 239000000919 ceramic Substances 0.000 title claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 239000002245 particle Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 20
- 230000005291 magnetic effect Effects 0.000 claims description 11
- 239000003302 ferromagnetic material Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 8
- 238000003672 processing method Methods 0.000 description 8
- 238000007517 polishing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a magnetorheological polishing device of high-efficiency high-precision ceramic balls, which comprises an outer ring barrel (1), wherein an inner ring sleeve (2) is arranged in the outer ring barrel (1), a magnet (6) is arranged in the inner ring sleeve (2), a plurality of retainers (4) are arranged on the outer diameter of the inner ring sleeve (2), a ball accommodating structure (3) is arranged on the retainers (4), a magnetorheological polishing liquid space (10) is arranged between the outer ring barrel (1) and the retainers (4), and the ball accommodating structure (3) and the magnetorheological polishing liquid space (10) are arranged in a penetrating manner. The magnetorheological polishing liquid filled in the device provided by the invention generates the magnetorheological polishing pad (5) capable of self-sharpening and renewing abrasive particles, so that ceramic balls in the retainer (4) are ground and polished. The ultra-precise ceramic ball has the advantages of simple and compact structure, low cost and high processing efficiency, and can obtain ultra-precise ceramic balls with high surface quality and shape precision and no subsurface damage.
Description
Technical Field
The invention relates to a ceramic ball grinding and polishing device and a polishing method thereof, in particular to a precise grinding and polishing processing device for high-precision ceramic balls in a high-speed and high-precision ceramic ball bearing, belonging to the processing technology of high-precision spherical parts.
Background
With the rapid development of the industrial level, the requirements for the precision and the reliability of machine tool equipment and working instruments are higher and higher. Compared with the traditional metal materials, the high-precision advanced ceramic has the characteristics of high strength, large elastic modulus, high temperature resistance, high pressure resistance, wear resistance, low thermal expansion coefficient, good thermal stability and chemical stability and the like, is widely used in ball bearings, and is a key part thereof. Meanwhile, the ceramic ball plays a very important role in precision instruments such as ball roundness measuring instruments, gyroscopes, precision measuring instruments and the like, has large demand, and has very important roles in aerospace, precision machinery, national defense and military, petrochemical industry, automobile manufacturing industry and the like.
However, the ceramic balls used in the precise instruments have extremely high requirements on spherical deviation, ball diameter fluctuation and surface roughness, and the parameters directly influence the technical indexes such as movement precision, working noise, service life and the like of the balls, thereby influencing the performances of equipment and instruments. Surface defects such as concave-convex and cracks on the surface of the ball have great influence on the motion precision and service life of the bearing. Therefore, to achieve high surface quality requirements, it is critical to eliminate surface damage during the final polishing stage.
The existing grinding and polishing processing method of the precise ceramic ball mainly comprises a V-shaped groove grinding processing method, a circular groove grinding processing method, a conical disc grinding processing method, an automatic rotation angle control grinding method, a magnetic suspension grinding processing method and the like. The V-shaped groove grinding processing method is the most main and common at present, and has the advantages of larger ball loading amount at a time and higher processing efficiency. However, the V-groove polishing method has many disadvantages in that the ceramic ball can only perform a polishing motion of "constant relative orientation" during the polishing process, so that the surface of the ceramic ball cannot be polished with a full envelope, and it is difficult to achieve a uniform polishing effect. In most other grinding methods, many grinding devices have a large number of power sources, complex structures and control systems, high requirements on manufacturing and assembling precision, and high processing cost.
Therefore, for the processing of high-precision balls of difficult-to-process materials such as silicon nitride ceramic balls, the existing high-precision grinding and polishing processing device for the ceramic balls, which has the advantages of higher processing precision and processing efficiency, simple device structure and lower manufacturing cost, is urgently needed, and solves the current situations of lower processing efficiency, poorer processing consistency and higher cost of the ceramic balls in the prior art, and realizes the high-precision grinding and polishing processing of the ceramic balls.
Disclosure of Invention
The invention aims to overcome the defects of low processing efficiency and high cost in the prior art, and provides grinding and polishing sphere equipment which has the advantages of high processing precision, high processing efficiency and high processing consistency, and meanwhile, the device has a simple structure, low cost and low assembly precision requirement.
The invention adopts the technical scheme that: the utility model provides a high-efficient high accuracy ceramic ball's magneto-rheological polishing device, includes outer circle section of thick bamboo (1), the inside of outer circle section of thick bamboo (1) is equipped with inner circle sleeve (2), be equipped with magnet (6) in inner circle sleeve (2), be equipped with a plurality of holders (4) on the external diameter of inner circle sleeve (2), be equipped with ball holding structure (3) on holder (4), outer circle section of thick bamboo (1) with between holder (4), inner circle sleeve (2) with all be equipped with magneto-rheological polishing liquid space (10) between holder (4), ball holding structure (3) with magneto-rheological polishing liquid space (10) link up the setting.
Preferably, the base of the outer ring barrel (1) is made of ferromagnetic materials, the inner wall of the base is provided with a circular groove, and the circular groove is matched and connected with the magnet (6), so that the magnet (6) is embedded on the outer ring base in a suction way and rotates along with the outer ring.
Preferably, the inner wall of the base of the outer ring barrel (1) is also provided with an annular groove, and the annular groove is matched and connected with the inner ring sleeve (2).
Preferably, the bottom end of the outer ring barrel (1) is provided with an outer ring sealing cover (7).
Preferably, a sealing felt ring (8) is arranged at the joint of the outer ring cylinder (1) and the bottom end of the inner ring sleeve (2).
Preferably, the retainers (4) are separated by washers (9).
Preferably, the outer ring barrel (1) is placed on the ball mill in a sealing way by an outer ring sealing cover (7) and rotates along with a parallel shaft of the ball mill or is driven by another driving device.
Preferably, the inner ring sleeve (2) is fixed on the ball mill frame by bolts.
Preferably, the cage (4) is arranged coaxially to the inner ring sleeve (2).
Preferably, a magnetorheological polishing liquid space (10) between the inner ring sleeve (2) and the retainer (4) is filled with magnetorheological polishing liquid, and a certain gap is formed between the magnet (6) and the inner ring sleeve (2) and is coaxially arranged; when the outer ring barrel (1) drives the magnet (6) to rotate, the inner ring sleeve (2) is fixed on the frame, so that a moving magnetic field is formed and between the outer ring barrel (1) and the retainer (4), magnetorheological polishing liquid between the inner ring sleeve (2) and the retainer (4) generates a magnetorheological polishing pad (5) capable of self-sharpening abrasive particle updating, and ceramic balls in the retainer (4) are polished.
Compared with the prior art, the invention has the beneficial effects that: (1) The magnetorheological polishing processing device adopted by the invention has simple structure and convenient installation, the rotating speed of the outer ring cylinder and the gap between the inner ring cylinder can be accurately controlled through the driving shaft, the motion state of the ball blank in the grinding and polishing process can be actively controlled, the rotation angle theta of the ball blank is continuously changed, the grinding track line is uniformly distributed on the spherical surface, the full-envelope polishing can be realized, and the processing consistency and the stability of the grinding and polishing sphere are improved; (2) The retainer can accurately fix each ceramic ball, so that the motion states of the ceramic balls are basically the same, and the interference of other factors is reduced, thereby further ensuring that the sphericity and roughness of the ceramic balls after processing are consistent and uniform; (3) The polishing device creatively realizes magnetorheological polishing under the action of a dynamic magnetic field, and the cylindrical magnet continuously rotates along with the outer ring barrel, so that the magnetic field continuously changes on the outer wall of the inner ring barrel, abrasive particles in the magnetorheological polishing pad can realize self-sharpening update, self-sharpening repair of the polishing pad is realized, the processing efficiency is improved, and the high-quality and smooth ceramic ball surface with excellent dimensional precision and shape precision can be efficiently obtained.
Drawings
FIG. 1 is a horizontal cross-sectional view of a magnetorheological polishing apparatus for high-efficiency high-precision ceramic balls of the present invention;
FIG. 2 is a schematic right side view of a magnetorheological polishing apparatus for high efficiency and high precision ceramic balls in accordance with the present invention;
FIG. 3 is a vertical cross-sectional view of a magnetorheological polishing apparatus for high efficiency and high precision ceramic balls in accordance with the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to specific embodiments.
As shown in fig. 1-3, a magnetorheological polishing device for high-efficiency high-precision ceramic balls comprises an outer ring barrel (1), an inner ring sleeve (2) is arranged in the outer ring barrel (1), a magnet (6) is arranged in the inner ring sleeve (2), a plurality of retainers (4) are arranged on the outer diameter of the inner ring sleeve (2), ball accommodating structures (3) are arranged on the retainers (4), magnetorheological polishing liquid spaces (10) are arranged between the outer ring barrel (1) and the retainers (4), and the ball accommodating structures (3) are communicated with the magnetorheological polishing liquid spaces (10).
In the specific technical scheme of the invention, the base of the outer ring barrel (1) is made of ferromagnetic material, the inner wall of the base is provided with a circular groove, and the circular groove is matched and connected with the magnet (6) so that the magnet (6) is sucked and embedded on the outer ring base and rotates along with the outer ring; the inner wall of the base of the outer ring barrel (1) is also provided with an annular groove, and the annular groove is matched and connected with the inner ring sleeve (2).
Further, the bottom end of the outer ring barrel (1) is provided with an outer ring sealing cover (7), a sealing felt ring (8) is arranged at the joint of the outer ring barrel (1) and the bottom end of the inner ring sleeve (2), and the arrangement ensures that the outer ring barrel (1) realizes complete sealing, and polishing liquid is prevented from leaking and external interference is avoided when the polishing liquid is particularly used; the retainers (4) are separated by washers (9) so that the retainers (4) are independent; the outer ring cylinder (1) is hermetically placed on the ball mill by an outer ring sealing cover (7) and rotates along with a parallel shaft of the ball mill or is driven by another driving device, and the inner ring sleeve (2) is fixed on a ball mill frame by bolts.
Further, the retainer (4) and the inner ring sleeve (2) are coaxially arranged; a magnetorheological polishing liquid space (10) between the inner ring sleeve (2) and the retainer (4) is filled with magnetorheological polishing liquid, and a certain gap is reserved between the magnet (6) and the inner ring sleeve (2) and is coaxially arranged; when the outer ring barrel (1) drives the magnet (6) to rotate, the inner ring sleeve (2) is fixed on the frame, so that a moving magnetic field is formed, magnetorheological polishing liquid between the outer ring barrel (1) and the retainer (4) generates a magnetorheological polishing pad (5) capable of self-sharpening abrasive particle updating, and ceramic balls in the retainer (4) are polished.
The base of the outer ring cylinder (1) is made of ferromagnetic materials, a circular groove and an annular groove are formed in the inner wall of the base, and the opening end of the outer ring cylinder (1) is sealed by an outer ring sealing cover (7) and a sealing felt ring (8); the cylindrical magnet (6) is embedded into a circular groove of the base of the outer ring cylinder (1), and the base end of the outer ring cylinder (1) and the cylindrical magnet (6) are attracted into a whole, namely a movement unit; the cylindrical magnet (6) is also arranged in the inner ring sleeve (2) at the same time, a certain gap is reserved between the magnet (6) and the inner ring sleeve (2) and the magnet is coaxial with the magnet, the outer ring sleeve (1) and the retainer (4) are arranged between the inner ring sleeve (2) and the retainer (4), and magnetorheological polishing liquid spaces (10) are respectively arranged between the inner ring sleeve (2) and the retainer (4) and are used for accommodating magnetorheological polishing liquid when the magnetorheological polishing liquid is used; one end of the inner ring sleeve (2) passes through the outer ring sealing cover (7) and is fixed on the frame by a bolt, the other end of the inner ring sleeve is inserted into an annular groove at the base end of the outer ring barrel (1), and the blocking magnet (6) is directly contacted with the magnetorheological polishing liquid; ceramic balls to be processed are placed in the ceramic ball retainer (4), the retainer (4) is separated by a gasket and uniformly sleeved on the outer wall of the inner ring sleeve (2), the retainer and the inner ring sleeve (2) are placed coaxially, and the ball accommodating structure (3) is communicated with the magnetorheological polishing liquid accommodating structure.
The processing method comprises the following steps: the cylindrical magnet (6) is adsorbed in a circular groove at the base end of the outer ring barrel (1), the inner ring sleeve (2) is inverted after passing through the outer ring cover (7), a plurality of retainers (4) are separated and positioned by using gaskets (9), the retainers are uniformly placed on the outer cylindrical surface of the inner ring sleeve (2), and the ceramic balls to be processed are placed in the ball accommodating structures (3) of the retainers (4); the outer ring cylinder (1) is vertically sleeved outside the inner ring cylinder (2), and the top end of the inner ring cylinder (2) is just inserted into the annular groove at the base end of the outer ring; turning the whole device for 180 degrees, filling a proper amount of magnetorheological polishing liquid into a magnetorheological polishing liquid space (10) in the outer ring barrel (1), and forming a magnetorheological polishing pad (5) on the outer surface of the inner ring barrel (2) by a cylindrical magnet (6) adsorbed at the base end of the outer ring in the inner ring barrel (2); when the outer ring barrel (1) rotates, the cylindrical magnet (6) rotates along with the outer ring barrel (1), and the inner ring sleeve (2) is fixed on the frame through bolt connection and has a relative rotating speed with the magnet, so that the dynamic magnetic field magnetorheological flexible polishing pad (5) with self-sharpening repairing capability is formed; the magnetorheological polishing pad (5) is in flexible contact with the ceramic balls in the retainer (4); the outer ring cylinder (1) is directly placed on the ball mill to rotate along with a parallel shaft after being sealed by the outer ring cover (7), or the outer ring cylinder (1) is driven to rotate by a special driving device, and the motion state and the rotation angle of the ceramic ball blank in the grinding and polishing process can be actively controlled by adjusting the relative gap and the rotation speed between the inner ring sleeve (2) and the outer ring cylinder (1). The device can process a plurality of ceramic balls simultaneously, and each ceramic ball is isolated from each other and can not collide and squeeze when polishing, so that the collision damage of the surface and the fragmentation are avoided, and the high-quality ultra-precise ceramic ball without subsurface damage is polished and processed.
The polishing effect of the magnetorheological polishing device for the high-efficiency high-precision ceramic balls can be controlled by adjusting the rotating speed of the driving shaft, namely the rotating speed of the outer ring barrel (1), gaps among the outer ring barrel (1), the inner ring sleeve (2) and the retainer (4), the component proportion of the magnetorheological polishing liquid and the magnetic field intensity of the cylindrical magnet (6) in the inner ring sleeve (2). Further, the outer ring cylinder (1) rotates at a constant speed or a non-constant speed; the inner ring sleeve (2) is fixedly connected to the ball mill frame through a bolt, and can also be connected with a spring or a flexible part such as a ball valve; the power system is a ball mill or other devices capable of driving the outer ring cylinder (1) to rotate; the surface roughness of the spherical surface of the ceramic ball after polishing can be well improved, and cracking and subsurface damage can not be generated; meanwhile, due to the effect of the retainer (4), the shape precision of the ceramic balls is not affected basically, so that the required high-precision and high-efficiency polishing effect is achieved.
Examples:
referring to fig. 1, 2 and 3, the magnetorheological polishing device for the high-efficiency high-precision ceramic balls comprises an outer ring barrel (1), an inner ring sleeve (2), a ball accommodating structure (3), a retainer (4), a magnetorheological polishing pad (5), a ring magnet (6), an outer ring sealing cover (7), a sealing felt ring (8), a gasket (9) and a magnetorheological polishing liquid space (10). The outer ring cylinder (1) can be sealed by an outer ring sealing cover (7), and the inner ring sleeve (2) can be fixed on the ball mill frame by bolts; the cylindrical magnet (6) is placed in a cylindrical groove at the bottom end of the outer ring barrel (1), and the cylindrical magnet and the cylindrical groove are attracted into a whole; the inner ring sleeve (2) is inverted after passing through the outer ring cover (7), a plurality of retainers (4) are separated and positioned by gaskets (9), and are uniformly placed on the outer cylindrical surface of the inner ring sleeve (2), and ceramic balls to be processed are placed in the ball accommodating structures (3) of the retainers (4); the outer ring cylinder (1) is vertically sleeved outside the inner ring cylinder (2), and the top end of the inner ring cylinder (2) is just inserted into the annular groove at the base end of the outer ring; turning the whole device for 180 degrees, filling a proper amount of magnetorheological polishing liquid into a magnetorheological polishing liquid space (10) of the outer ring barrel (1), and forming a magnetorheological polishing pad (5) on the outer surface of the inner ring barrel (2) by a cylindrical magnet (6) adsorbed at the base end of the outer ring in the inner ring barrel (2); when the outer ring barrel (1) rotates, the cylindrical magnet (6) rotates along with the outer ring barrel (1), and the inner ring sleeve (2) is fixed on the frame through bolt connection and has a relative rotating speed with the magnet, so that the dynamic magnetic field magnetorheological flexible polishing pad (5) with self-sharpening repairing capability is formed; the magnetorheological polishing pad is in flexible contact with the ceramic balls in the retainer (4); the outer ring cylinder (1) is directly placed on the ball mill to rotate along with a parallel shaft after being sealed by the outer ring cover (7), or is driven to rotate by a special driving device, and the motion state and the rotation angle of the ceramic ball blank in the grinding and polishing process can be actively controlled by adjusting the relative gap and the rotation speed between the inner ring sleeve and the outer ring cylinder.
The working process of the embodiment is as follows: during specific processing, firstly, a cylindrical magnet (6) is placed into a cylindrical groove at the bottom end of an outer ring barrel (1), an inner ring sleeve (2) is inverted after passing through an outer ring cover (7), a plurality of retainers (4) are separated and positioned by using gaskets (9), the retainers are uniformly placed on the outer cylindrical surface of the inner ring sleeve (2), and ceramic balls to be processed are placed in a ball accommodating structure (3) of the retainers (4); the outer ring cylinder (1) is vertically sleeved outside the inner ring cylinder (2), and the top end of the inner ring cylinder (2) is just inserted into the annular groove at the base end of the outer ring; and turning over the whole device for 180 degrees, filling a proper amount of magnetorheological polishing solution (10) into the outer ring barrel (1), and finally sealing the outer ring barrel (1) by using an outer ring sealing cover (7). The outer ring cylinder (1) is placed on a parallel shaft or a special driving device of the ball mill, and then the inner ring sleeve (2) is fixed with the frame through bolt connection. The ball mill or the driving shaft switch is turned on, the outer ring barrel (1) carries the cylindrical magnet (6) to rotate along with the driving shaft, the inner ring sleeve (2) can have a relative rotating speed with the magnet (6) due to being fixed on the frame, and the surface of the inner ring sleeve (2) forms a magneto-rheological polishing pad (5) under the action of a moving magnetic field. The motion state of the ceramic ball blank in the grinding and polishing process can be actively controlled by adjusting the relative rotation speed between the inner ring sleeve (2) and the outer ring sleeve (1), so that the high-efficiency and high-precision polishing is achieved. The device can process a plurality of ceramic balls simultaneously, and each ceramic ball is isolated from each other and can not collide and squeeze when polishing, so that the collision damage of the surface and the fragmentation are avoided, and the high-quality ultra-precise ceramic ball without subsurface damage is polished and processed.
The principle of the processing method is as follows: a magnetorheological polishing liquid space (10) is arranged between the outer ring sleeve (1) and the retainer (4), a proper amount of magnetorheological polishing liquid (10) is filled in the space between the inner ring sleeve (2) and the retainer (4), the polishing liquid forms a magnetorheological polishing pad (5) on the outer surface of the inner ring sleeve (2), and the polishing liquid forms the magnetorheological polishing pad (5) on the inner surface of the outer ring sleeve (1); the magnetorheological polishing pad (5) is in flexible contact with the ceramic balls in the retainer (4), and when the whole device rotates on a parallel shaft of a rotary power source and the relative rotation speed of the inner ring cylinder and the outer ring cylinder is accurately controlled, the ceramic balls to be processed can fully rotate and revolve in the retainer, so that the full-envelope uniform polishing of the surfaces of the ceramic balls is realized. The invention has simple and compact structure, low production cost and high processing efficiency, and can obtain the ultra-precise ceramic ball with high surface quality and shape precision and no subsurface damage.
Various other corresponding changes and modifications will occur to those skilled in the art from the foregoing description and the accompanying drawings, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (6)
1. A magnetorheological polishing device for high-efficiency high-precision ceramic balls is characterized in that: the magnetic flux polishing device comprises an outer ring barrel (1), wherein an inner ring sleeve (2) is arranged in the outer ring barrel (1), a magnet (6) is arranged in the inner ring sleeve (2), a plurality of retainers (4) are arranged on the outer diameter of the inner ring sleeve (2), ball accommodating structures (3) are arranged on the retainers (4), magnetorheological polishing liquid spaces (10) are respectively arranged between the outer ring barrel (1) and the retainers (4) and between the inner ring sleeve (2) and the retainers (4), and the ball accommodating structures (3) and the magnetorheological polishing liquid spaces (10) are communicated;
a magnetorheological polishing liquid space (10) between the outer ring cylinder (1) and the retainer (4) and between the inner ring sleeve (2) and the retainer (4) is filled with magnetorheological polishing liquid, and a certain gap is reserved between the magnet (6) and the inner ring sleeve (2) and is coaxially arranged; when the outer ring cylinder (1) drives the magnet (6) to rotate, the inner ring sleeve (2) is fixed on the frame and is fixed, so that a moving magnetic field is formed, and magnetorheological polishing liquid between the outer ring cylinder (1) and the retainer (4) and between the inner ring sleeve (2) and the retainer (4) generates a magnetorheological polishing pad (5) capable of self-sharpening abrasive particle updating, so that ceramic balls in the retainer (4) are polished;
the base of the outer ring cylinder (1) is made of ferromagnetic material, the inner wall of the outer ring cylinder is provided with a circular groove, and the circular groove is connected with the magnet (6) in an attractive fit manner;
the inner wall of the base of the outer ring barrel (1) is also provided with an annular groove which is matched and connected with the inner ring sleeve (2);
an outer ring sealing cover (7) is arranged at the opening end of the outer ring barrel (1).
2. The magnetorheological polishing device for the high-efficiency and high-precision ceramic balls, according to claim 1, wherein the magnetorheological polishing device is characterized in that: a sealing felt ring (8) is arranged between the outer ring sealing cover (7) and the inner ring sleeve (2).
3. The magnetorheological polishing device for the high-efficiency and high-precision ceramic balls, according to claim 1, wherein the magnetorheological polishing device is characterized in that: the retainers (4) are separated by washers (9).
4. The magnetorheological polishing device for the high-efficiency and high-precision ceramic balls, according to claim 1, wherein the magnetorheological polishing device is characterized in that: the outer ring cylinder (1) is hermetically placed on the ball mill by an outer ring sealing cover (7) and rotates along with a parallel shaft of the ball mill or is driven by another driving device.
5. The magnetorheological polishing device for the high-efficiency and high-precision ceramic balls, according to claim 1, wherein the magnetorheological polishing device is characterized in that: the inner ring sleeve (2) is fixed on the ball mill frame through bolts.
6. The magnetorheological polishing device for the high-efficiency and high-precision ceramic balls, according to claim 1, wherein the magnetorheological polishing device is characterized in that: the retainer (4) and the inner ring sleeve (2) are coaxially arranged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412761.8A CN108274306B (en) | 2017-12-24 | 2017-12-24 | Magnetorheological polishing device for efficient high-precision ceramic balls |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711412761.8A CN108274306B (en) | 2017-12-24 | 2017-12-24 | Magnetorheological polishing device for efficient high-precision ceramic balls |
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| CN108274306A CN108274306A (en) | 2018-07-13 |
| CN108274306B true CN108274306B (en) | 2024-03-29 |
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| CN110216529B (en) * | 2019-07-18 | 2021-01-26 | 浙江科惠医疗器械股份有限公司 | Biological ceramic artificial joint spherical surface circulating polishing machine |
| CN110253416B (en) * | 2019-07-18 | 2021-02-19 | 浙江科惠医疗器械股份有限公司 | Biological pottery artificial joint sphere is with two polishing passageway burnishing devices |
| CN111438567B (en) * | 2020-04-07 | 2021-02-05 | 台州学院 | Magnetorheological polishing knife |
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| CN2860737Y (en) * | 2006-01-23 | 2007-01-24 | 中北大学 | Magnetic fluid grinding device for grinding ceramic ball surface |
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