CN112157485A - Ball tool magneto-rheological polishing device under three-dimensional driving - Google Patents
Ball tool magneto-rheological polishing device under three-dimensional driving Download PDFInfo
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- CN112157485A CN112157485A CN202011012692.3A CN202011012692A CN112157485A CN 112157485 A CN112157485 A CN 112157485A CN 202011012692 A CN202011012692 A CN 202011012692A CN 112157485 A CN112157485 A CN 112157485A
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- ball
- tool
- magnetorheological
- rotating shaft
- arc
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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
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
- B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The application discloses a magnetorheological grinding and polishing device for a ball tool under three-dimensional driving, which comprises a rack, a magnetorheological fluid circulating supply mechanism and a rotatable ball tool, wherein the magnetorheological fluid circulating supply mechanism is rotatably arranged on the rack, the ball tool is arranged below the rack, the ball tool comprises a rigid ball shell and an arc-shaped magnetic pole arranged in the ball shell, and the arc-shaped magnetic pole is kept at the bottom of the rotating ball shell; the magnetorheological fluid circulating supply mechanism comprises an output passage and a recovery passage, the output passage and the recovery passage extend to the positions close to the spherical shell and are distributed at the two ends of the arc-shaped magnetic pole, the rheological property of the magnetorheological fluid under the action of a magnetic field is utilized to restrain and control the grinding materials, the magnetic polishing ball (spherical tool) and the magnetorheological fluid circulating supply device are utilized to realize non-contact type polishing and polishing on the workpiece, the rigidity and the stability of the device are improved, and higher processing precision can be obtained.
Description
Technical Field
The invention relates to the technical field of grinding and polishing processing, in particular to a magnetorheological grinding and polishing device for a ball tool under three-dimensional driving.
Background
In precision grinding and polishing, the processing trace is one of the key directions of research, and how to form an ideal processing trace which is irregular, flat and uniform is a current research difficulty. The sphere is used as a three-dimensional symmetrical body, the surface of the sphere is the same everywhere, and compared with a traditional circular end face machining tool, the three-degree-of-freedom freely-rotating sphere tool cannot form regular machining marks.
Publication No. CN108637874B discloses a three-degree-of-freedom sphere rotation type polishing device, which uses a solid rubber ball and a polishing pad to perform contact polishing. Since the polishing tool needs a certain flexibility to ensure the processing precision of the workpiece surface in contact polishing, the reduction of the rigidity leads to poor polishing stability of the scheme. Therefore, how to maintain high processing accuracy under the condition of enhancing the overall rigidity of the device is a problem to be solved.
Disclosure of Invention
Aiming at the technical problems, the invention provides a magnetorheological grinding and polishing device for a ball tool under three-dimensional driving, which solves the technical problems of improving the machining precision during grinding and polishing and having irregular machining traces and no subsurface damage on the premise of ensuring the rigidity of the ball tool.
The magnetorheological ball tool magnetorheological grinding and polishing device under three-dimensional driving comprises a rack, a magnetorheological fluid circulating supply mechanism and a rotatable spherical tool, wherein the magnetorheological fluid circulating supply mechanism is rotatably arranged on the rack, the spherical tool is arranged below the rack, the spherical tool comprises a rigid spherical shell and an arc-shaped magnetic pole arranged in the spherical shell, and the arc-shaped magnetic pole is kept at the bottom of the rotating spherical shell; the magnetorheological fluid circulating supply mechanism comprises an output passage and a recovery passage, and the output passage and the recovery passage extend to the two ends which are close to the ball shell and distributed on the arc-shaped magnetic poles. The spherical tool is changed into a magnetic spherical tool by adding the arc-shaped magnetic pole, and then the magnetorheological fluid circulating supply mechanism is added, so that the non-contact type grinding and polishing of the workpiece is realized.
Furthermore, magnetorheological suspensions circulation feed mechanism includes revolving stage, magnetorheological suspensions container, centrifugal pump, peristaltic pump and pipe, the revolving stage sets up in the frame rotatoryly, magnetorheological suspensions container set up in on the revolving stage, centrifugal pump with the peristaltic pump set up in the both sides of magnetorheological suspensions container are in order to export and retrieve magnetorheological suspensions, the centrifugal pump with the peristaltic pump all connects a pipe in order to form the output route and the recovery route of magnetorheological suspensions, the pipe is followed frame both sides downwardly extending sets up to being close to the ball casing. The centrifugal pump and the peristaltic pump provide a liquid supply basis, the rheological property of the magnetorheological fluid under the action of a magnetic field is utilized to restrain and control the grinding materials, and the processing can be completed under the non-contact condition and the high surface quality is ensured.
Furthermore, the spherical tool further comprises a rotating shaft, a rotating joint and a connecting rod, wherein the rotating shaft passes through the spherical center of the spherical shell and is rotatably connected with two positions on the spherical shell, the rotating joint comprises a first joint part sleeved in the middle of the rotating shaft and a second joint part rotatably connected with the first joint part, one end of the connecting rod is connected with the second joint part, and the other end of the connecting rod is connected with the arc-shaped magnetic pole. The rotating shaft is arranged along the center of the sphere and rotates in the spherical shell, and the arc-shaped magnetic poles are not influenced by the rotation of the spherical shell around the rotating shaft by matching with the rotating joints.
Furthermore, the rotating shaft is obliquely arranged in the ball shell and extends out of the ball shell, and an included angle between the rotating shaft and the vertical direction is an acute angle. Namely, the rotating shaft and the vertical direction are kept at a certain angle, so that the interference caused by the change of the angle of the rotating shaft and the friction fluted disc or the retainer is avoided in the machining process.
Furthermore, the spherical tool further comprises a limiting mechanism, wherein the limiting mechanism is sleeved on one side of the rotating shaft and connected with the arc-shaped magnetic pole so as to limit the angle range between the arc-shaped magnetic pole and the rotating shaft.
Further, stop gear includes connecting rod, guide rail frame and connecting block, the guide rail frame cover is located one side of rotation axis, set up the guide rail in the guide rail frame, and the guide rail with the rotation axis is parallel, the connecting block cover is located the guide rail with on the rotation axis, and can follow the guide rail with the rotation axis slides, connecting rod one end is rotatably connected the connecting block, one end is rotatably connected the arc magnetic pole. Further, the arc-shaped magnetic poles are kept at the bottom of the ball shell and do not move along with the rotation of the ball shell.
Further, the spherical tool rotating mechanism comprises a retainer and positioning balls, the retainer is suspended below the rack and is provided with an annular part, and the positioning balls are distributed on the annular part to position the spherical tool. The spherical tool is positioned and supported, and is prevented from falling.
Furthermore, the spherical tool rotating mechanism further comprises three motors and friction fluted discs, the motors are circumferentially distributed below the rack, the friction fluted discs are installed on the motors, the axes of the three motors are perpendicular to each other, and the friction fluted discs drive the spherical tool to rotate. The friction fluted disc and the positioning ball are matched to clamp the spherical tool, and under the geometric position relationship, the autorotation motion of the spherical tool caused by each motor is mutually vertical, three rotational degrees of freedom in a corresponding space are realized, and 360-degree free rotation of the spherical tool is realized.
Furthermore, the friction fluted disc drives the ball shell to rotate around the rotating shaft and simultaneously drives the ball shell to rotate around a vertical central line passing through the center of the ball, and the rotation is combined to form an irregular polishing track.
Further, the weight of the arc-shaped magnetic pole is satisfied that the arc-shaped magnetic pole keeps the position at the bottom of the rotating earth shell through self-weight.
The magnetorheological fluid is used for restraining and controlling the abrasive material under the action of the magnetic field, and the magnetic polishing ball (spherical tool) and the magnetorheological fluid circulating supply device are used for realizing non-contact polishing of the workpiece, so that the rigidity and the stability of the device are improved, and higher processing precision can be obtained.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the invention. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic block diagram according to one embodiment of the invention;
FIG. 2 is a schematic illustration of a partial structure of a ball tool according to a specific embodiment of the invention;
FIG. 3 is a schematic diagram of an embodiment of a position adjustment mechanism according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of another embodiment of the position adjusting mechanism according to a specific embodiment of the invention.
Fig. 5 is a schematic illustration of magnetorheological fluid supply recovery in accordance with an embodiment of the invention.
Reference numbers in the figures:
1-a frame; 2, a motor; 3-friction fluted disc; 4-a cage; 5-positioning the ball; 6-a spherical tool; 7-rotating table; 8-magnetorheological fluid container; 9-a centrifugal pump; 10-a peristaltic pump; 11-upper spherical shell; 12-lower spherical shell; 13-a rotating shaft; 14-a rotary joint; 15-arc magnetic pole; 16-a catheter; 17-a nut; 18-a guide rail; 19-a connecting rod; 20-guide rail bracket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the structure of a magnetorheological polishing device for a three-dimensional driven ball tool according to the present invention. Specifically, the ball tool magnetorheological grinding and polishing device under three-dimensional driving comprises a rack 1, a magnetorheological fluid circulating supply mechanism, a rotatable ball tool 6 and a ball tool rotating mechanism, wherein the magnetorheological fluid circulating supply mechanism comprises a rotating table 7, a magnetorheological fluid container 8, a centrifugal pump 9, a peristaltic pump 10 and a guide pipe 16, the rotating table 7 is rotatably arranged on the rack 1, magnetorheological fluid is filled in the magnetorheological fluid container 8 and is arranged on the rotating table 7, the centrifugal pump 9 and the peristaltic pump 10 are arranged on two sides of the magnetorheological fluid container 8 to output and recover the magnetorheological fluid, the centrifugal pump 9 and the peristaltic pump 10 are respectively connected with the guide pipe 16 to form an output passage and a recovery passage of the magnetorheological fluid, and the guide pipe 16 extends downwards from two sides of the rack 1 to be close to the ball shell.
In the embodiment, the spherical tool rotating mechanism comprises a retainer 4, positioning balls 5, three motors 2 circumferentially distributed below the rack and a friction fluted disc 3 installed on the motors, wherein the retainer 4 is suspended below the rack 1, the rack 1 is provided with an annular part, and the positioning balls 5 are distributed on the annular part to position the spherical tool 6 to prevent the spherical tool from falling. The axes of the three motors 2 are vertical to each other, and the friction fluted disc 3 drives the spherical tool 6 to rotate. The rotation of the friction toothed disc 3 driving the spherical tool 6 can be decomposed into: the spherical tool 6 can be driven to rotate around the rotating shaft 13, and the spherical tool 6 can be driven to rotate around the shaft passing through the vertical center line direction of the sphere center, and the two components are compounded to form an irregular polishing track. The friction fluted disc and the positioning ball are matched to clamp the spherical tool, and under the geometric position relationship, the autorotation motion of the spherical tool caused by each motor is mutually vertical, three rotational degrees of freedom in a corresponding space are realized, and 360-degree free rotation of the spherical tool is realized.
Further, as shown in fig. 2, a partial structure of the spherical tool is schematically illustrated, and the spherical shell includes an upper spherical shell 11 and a lower spherical shell 12, and the upper spherical shell 11 and the lower spherical shell 12 constitute the spherical shell, i.e. the working surface, of the spherical tool.
Referring to fig. 2 and 3 again, the spherical tool includes a rotating shaft 13, a rotating joint 14, a connecting rod and an arc-shaped magnetic pole 15, the rotating shaft 13 is disposed in the spherical shell in an inclined manner and extends out of the spherical shell, and is rotatably connected with two places on the spherical shell through the spherical center of the spherical shell, in this embodiment, the rotating shaft 13 is rotatably connected with the upper spherical shell 11 and the lower spherical shell 12, respectively, and the spherical shell can rotate around the rotating shaft 13. The rotary joint 14 comprises a joint part sleeved in the middle of the rotary shaft 13 and a joint part II rotationally connected with the joint part I, one end of the connecting rod is connected with the joint part II, one end of the connecting rod is connected with the arc-shaped magnetic pole 15, and the weight of the arc-shaped magnetic pole 15 meets the requirement that the arc-shaped magnetic pole 15 keeps the position at the bottom of the rotary earth shell through self weight. The rotating shaft 13, the ball shell and the rotating joint 14 are connected through a bearing, so that the arc-shaped magnetic pole 15 is not influenced by the rotation of the ball shell around the rotating shaft 13 and is always positioned at the bottom of the ball shell.
In a particular embodiment, the angle between the axis of rotation 13 and the vertical is acute. Namely, the rotating shaft and the vertical direction are kept at a certain angle, so that the interference caused by the change of the angle of the rotating shaft and the friction fluted disc or the retainer is avoided in the machining process. To explain from another angle, the rotation of the spherical tool needs to be controlled during the polishing process, so that the rotating shaft and the vertical direction are kept at a certain angle, and the interference with the friction fluted disc or the retainer caused by the angle change of the rotating shaft can be avoided during the machining process.
Further, as shown in fig. 4, the rail frame 20 is sleeved on one side of the rotating shaft 13, the rail frame 20 is provided with the rail 18, the rail 18 is arranged parallel to the rotating shaft 13, the connecting block 17 is sleeved on the rail 18 and the rotating shaft 13 and can slide along the rail 18 and the rotating shaft 13 within the range of the rail frame 20, one end of the connecting rod 19 is rotatably connected with the connecting block 17, and the other end of the connecting rod is rotatably connected with the arc-shaped magnetic pole 15. The range of variation of the angle between the axis of rotation 13 and the arcuate pole 15 is limited by the connection 19, further keeping the arcuate pole at the bottom of the ball housing and free of movement with the rotation of the ball housing.
As shown in fig. 5, when the device is used for processing, magnetorheological fluid is discharged from a magnetorheological fluid container 8 through a centrifugal pump 9, is sprayed on the spherical shell through a guide pipe 16, is adsorbed at the head end of the arc-shaped magnetic pole 15, and along with the rotation of the spherical tool 6, magnetic fluid forms a magnetic polishing belt in the direction of the arc-shaped magnetic pole 15 and is absorbed into the magnetorheological fluid container 8 through the peristaltic pump 10 at the tail end of the arc-shaped magnetic pole 15 through the guide pipe 16 to form a liquid supply circulation.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention according to the present invention is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the scope of the invention as defined by the appended claims. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.
Claims (10)
1. The magnetorheological ball tool magnetorheological grinding and polishing device under three-dimensional driving is characterized by comprising a rack, a magnetorheological fluid circulating supply mechanism and a rotatable spherical tool, wherein the magnetorheological fluid circulating supply mechanism is rotatably arranged on the rack, the spherical tool is arranged below the rack, the spherical tool comprises a rigid ball shell and an arc-shaped magnetic pole arranged in the ball shell, and the arc-shaped magnetic pole is kept at the bottom of the rotating ball shell; the magnetorheological fluid circulating supply mechanism comprises an output passage and a recovery passage, and the output passage and the recovery passage extend to the two ends which are close to the ball shell and distributed on the arc-shaped magnetic poles.
2. The three-dimensional driven ball tool magnetorheological grinding and polishing device according to claim 1, wherein the magnetorheological fluid circulating supply mechanism comprises a rotating table, a magnetorheological fluid container, a centrifugal pump, a peristaltic pump and a conduit, the rotating table is rotatably arranged on a frame, the magnetorheological fluid container is arranged on the rotating table, the centrifugal pump and the peristaltic pump are arranged on two sides of the magnetorheological fluid container to output and recover the magnetorheological fluid, the centrifugal pump and the peristaltic pump are connected with one conduit to form an output passage and a recovery passage of the magnetorheological fluid, and the conduit extends downwards from two sides of the frame to be close to the ball shell.
3. The three-dimensional driven magnetorheological finishing and throwing device for the ball tool under the condition of the power according to claim 1, wherein the ball tool further comprises a rotating shaft, a rotating joint and a connecting rod, the rotating shaft passes through the spherical center of the ball shell and is rotatably connected with two positions on the ball shell, the rotating joint comprises a first joint part sleeved in the middle of the rotating shaft and a second joint part rotatably connected with the first joint part, one end of the connecting rod is connected with the second joint part, and the other end of the connecting rod is connected with the arc-shaped magnetic pole.
4. The three-dimensional driven ball tool magnetorheological finishing and polishing device according to claim 3, wherein the rotating shaft is obliquely arranged in the ball shell and extends out of the ball shell, and the included angle between the rotating shaft and the vertical direction is an acute angle.
5. The three-dimensional driven magnetorheological finishing and throwing device for the ball tool under the condition of the power according to claim 3, wherein the ball tool further comprises a limiting mechanism, and the limiting mechanism is sleeved on one side of the rotating shaft and connected with the arc-shaped magnetic pole so as to limit the angle range between the arc-shaped magnetic pole and the rotating shaft.
6. The magnetorheological finishing and polishing device for the ball tool under three-dimensional driving of claim 5, wherein the limiting mechanism comprises a connecting rod, a guide rail frame and a connecting block, the guide rail frame is sleeved on one side of the rotating shaft, the guide rail is arranged in the guide rail frame and is parallel to the rotating shaft, the connecting block is sleeved on the guide rail and the rotating shaft and can slide along the guide rail and the rotating shaft, one end of the connecting rod is rotatably connected with the connecting block, and the other end of the connecting rod is rotatably connected with the arc-shaped magnetic pole.
7. The three-dimensional driven ball tool magnetorheological finishing and polishing device according to claim 1, further comprising a ball tool rotating mechanism comprising a holder and positioning balls, the holder being suspended below the frame, the holder having a ring portion, the positioning balls being distributed on the ring portion to position the ball tool.
8. The three-dimensional driven magnetorheological ball tool polishing device according to claim 1, wherein the spherical tool rotating mechanism further comprises three motors circumferentially distributed below the frame and friction fluted discs mounted on the motors, the axes of the three motors are perpendicular to each other, and the friction fluted discs drive the spherical tool to rotate.
9. The three-dimensional driven ball tool magnetorheological finishing device of claim 8, wherein the friction chainring drives the ball housing about the rotational axis while driving the ball housing about a vertical centerline passing through the center of the sphere.
10. The three-dimensional actuated ball tool magnetorheological finishing device of claim 1, wherein the arcuate magnetic poles are weighted such that the arcuate magnetic poles are held in position by their own weight at the bottom of the rotating earth's casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011012692.3A CN112157485A (en) | 2020-09-23 | 2020-09-23 | Ball tool magneto-rheological polishing device under three-dimensional driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011012692.3A CN112157485A (en) | 2020-09-23 | 2020-09-23 | Ball tool magneto-rheological polishing device under three-dimensional driving |
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| CN112157485A true CN112157485A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011012692.3A Pending CN112157485A (en) | 2020-09-23 | 2020-09-23 | Ball tool magneto-rheological polishing device under three-dimensional driving |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352826A (en) * | 2008-09-28 | 2009-01-28 | 清华大学 | Method for polishing inner concave surface of optical elements as well as device |
| CN101559571A (en) * | 2009-03-11 | 2009-10-21 | 清华大学 | Method and device for polishing magnetic field auxiliary flexible rotary brush for optical element |
| EP1727648B1 (en) * | 2004-02-27 | 2012-12-05 | Kecskeméti Föiskola Gamf Kar | Apparatus and method for deburring and roller-burnishing machine parts |
| CN207616256U (en) * | 2017-12-25 | 2018-07-17 | 山东科技大学 | Magnetorheological finishing device |
| CN108637874A (en) * | 2018-05-25 | 2018-10-12 | 厦门大学 | Three Degree Of Freedom sphere rotation type grinding and polishing device |
| CN111283544A (en) * | 2020-04-03 | 2020-06-16 | 厦门大学 | Magnetorheological precession polishing tool and device |
-
2020
- 2020-09-23 CN CN202011012692.3A patent/CN112157485A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1727648B1 (en) * | 2004-02-27 | 2012-12-05 | Kecskeméti Föiskola Gamf Kar | Apparatus and method for deburring and roller-burnishing machine parts |
| CN101352826A (en) * | 2008-09-28 | 2009-01-28 | 清华大学 | Method for polishing inner concave surface of optical elements as well as device |
| CN101559571A (en) * | 2009-03-11 | 2009-10-21 | 清华大学 | Method and device for polishing magnetic field auxiliary flexible rotary brush for optical element |
| CN207616256U (en) * | 2017-12-25 | 2018-07-17 | 山东科技大学 | Magnetorheological finishing device |
| CN108637874A (en) * | 2018-05-25 | 2018-10-12 | 厦门大学 | Three Degree Of Freedom sphere rotation type grinding and polishing device |
| CN111283544A (en) * | 2020-04-03 | 2020-06-16 | 厦门大学 | Magnetorheological precession polishing tool and device |
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Application publication date: 20210101 |
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