CN109648457B - Six-degree-of-freedom swing magnetic grinding device and magnetic grinding method - Google Patents
Six-degree-of-freedom swing magnetic grinding device and magnetic grinding method Download PDFInfo
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- CN109648457B CN109648457B CN201910110187.3A CN201910110187A CN109648457B CN 109648457 B CN109648457 B CN 109648457B CN 201910110187 A CN201910110187 A CN 201910110187A CN 109648457 B CN109648457 B CN 109648457B
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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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- 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
- B24B31/102—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 using an alternating magnetic field
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a magnetic grinding device and a magnetic grinding method with six degrees of freedom swinging, wherein the device comprises a six degrees of freedom platform and a grinding device, and the grinding device consists of a grinding outer cylinder, a grinding inner cylinder, a fixed electromagnet and a grinding electromagnet; the grinding outer cylinder is arranged on the six-degree-of-freedom platform, the bottom center of the grinding outer cylinder is provided with a fixed electromagnet, the grinding inner cylinder is movably arranged in the grinding outer cylinder, the bottom surface of the grinding inner cylinder is contacted with the fixed electromagnet, and the top of the grinding inner cylinder is closed through an upper cover; a plurality of grinding electromagnets are uniformly arranged on the upper platform at the outer side of the grinding outer cylinder along the circumferential direction of the upper platform; the six-degree-of-freedom platform is driven by 6 servo electric cylinders. The invention can process the magnetic conductive piece and the non-magnetic conductive piece by using the same device, and the motion track of the grinding particles driven by magnetic field force can be more complex by sequentially controlling the six-degree-of-freedom platform and the grinding electromagnet, the grinding particles and the workpiece are scraped and impacted relatively in multiple directions and multiple angles at high frequency, and the effect of removing burrs can be achieved rapidly, so that the grinding processing efficiency and quality are improved.
Description
Technical Field
The invention relates to the technical field of magnetic grinding, in particular to a magnetic grinding device capable of swinging in six degrees of freedom and a magnetic grinding method.
Background
In traditional machining, after a workpiece is machined in a turning, milling, planing and other modes, surface quality defects such as burrs, scratches and the like can be generated on the surface of the workpiece, so that the use effect is affected, and in equipment with high machining precision requirements, the workpiece is required to be subjected to finishing machining such as deburring and the like, so that the service reliability of the workpiece is improved.
The magnetic grinding is an effective finishing processing method, but the traditional magnetic grinding machine can only process non-magnetic conductive pieces, the magnetic pole motion track of driving grinding particles is single, internal angles, dead zones and small cracks of some precise hardware workpieces cannot be processed well, and the processing uniformity of the surfaces of the workpieces cannot be guaranteed.
Chinese patent publication No. CN108312050a discloses a "double-pole disc magnetic grinder and magnetic grinding method with adjustable machining pitch", which can only machine non-magnetically conductive workpiece, and drive magnetic grinding particles to move through magnetic poles on grinding disc, and the motion track of the particles is relatively single.
In fact, most of the current magnetic grinding devices grind magnetic grinding particles through a single moving magnetic pole disc driven by magnetic force, and only a single non-magnetic-conductive piece can be processed, so that the magnetic-conductive piece cannot be processed in the same device. The magnetic pole disc rotates to drive the magnetic grinding particles to move along a single track, so that the quality distribution of the surface of the processed workpiece is uneven.
Disclosure of Invention
The invention provides a six-degree-of-freedom swinging magnetic grinding device and a magnetic grinding method, which can process a magnetic conductive piece and a non-magnetic conductive piece by using the same device, and can make the motion track of grinding particles driven by magnetic field force more complex by sequential control of a six-degree-of-freedom platform and a grinding electromagnet, and the grinding particles and a workpiece are scraped and impacted relatively in multiple directions, multiple angles and high frequency, so that the effect of removing burrs rapidly can be achieved, and the grinding processing efficiency and quality are improved.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the magnetic grinding device comprises a six-degree-of-freedom platform and a grinding device, wherein the grinding device consists of a grinding outer cylinder, a grinding inner cylinder, a fixed electromagnet and a grinding electromagnet; the grinding outer cylinder is detachably arranged on the six-degree-of-freedom platform, the fixed electromagnet is arranged at the center of the bottom of the grinding outer cylinder, the grinding inner cylinder is movably arranged in the grinding outer cylinder, the bottom surface of the grinding inner cylinder is contacted with the fixed electromagnet, and the top of the grinding inner cylinder is closed through the upper cover; a plurality of grinding electromagnets are uniformly arranged on the upper platform at the outer side of the grinding outer cylinder along the circumferential direction of the upper platform; the six-degree-of-freedom platform is driven by 6 servo electric cylinders; when the magnetic conductive piece is processed, the grinding inner cylinder is used for containing non-magnetic abrasive materials and grinding liquid/grinding paste, and when the non-magnetic conductive piece is processed, the grinding inner cylinder is used for containing magnetic abrasive materials, and the processed magnetic conductive workpiece or non-magnetic conductive workpiece is also arranged in the grinding inner cylinder.
The six-degree-of-freedom platform consists of a lower bottom plate, 12 hook joints, 6 servo electric cylinders and an upper platform, wherein fixed ends of the 6 servo electric cylinders are respectively hinged with the lower bottom plate through the hook joints, and one ends of electric cylinder push rods of the 6 servo electric cylinders are respectively hinged with the upper platform through the hook joints.
The six-degree-of-freedom swinging magnetic grinding device further comprises a PLC controller, and each grinding electromagnet is connected with the PLC controller through an intermediate relay; the servo motor of each servo electric cylinder is connected with the PLC controller through a servo driver.
A plurality of rib plates are uniformly arranged on an upper platform at the outer side of the grinding outer cylinder along the circumferential direction, a flanging structure is arranged at the top of the grinding outer cylinder, and the flanging structure is fixedly connected with the tops of the rib plates through bolts; on the upper platform, grinding electromagnets and rib plates are arranged at intervals.
The number of the rib plates and the number of the grinding electromagnets are 6.
The top surface of the grinding inner cylinder is higher than the top surface of the grinding outer cylinder.
A magnetic lapping method based on the device, comprising:
1. the magnetic conductive workpiece is processed by the following specific steps:
1) Placing a magnetic conductive workpiece in an inner grinding cylinder, adding a non-magnetic abrasive material, grinding fluid/grinding paste into the inner grinding cylinder, and sealing the inner grinding cylinder by using an upper cover; the electromagnet is fixed to be electrified during processing, and the grinding electromagnet is not electrified; after the fixed electromagnet is electrified, magnetic force is generated, and a magnetic conductive workpiece placed in the grinding inner cylinder is adsorbed and fixed in the grinding inner cylinder;
2) The PLC is used for controlling each servo electric cylinder to sequentially act, and the six-degree-of-freedom platform drives the grinding device to perform overturning motions in different directions and angles; the grinding device is driven to swing through the posture adjustment of the six-degree-of-freedom platform, and the non-magnetic abrasive material is used for realizing multidirectional impact scratching of the magnetic conductive workpiece, so that the magnetic conductive workpiece is polished;
3) After finishing grinding, resetting the servo electric cylinder, and recovering the upper platform to an initial horizontal state; after the fixed electromagnet is powered off, the upper cover is opened, and the processed magnetic conductive workpiece is taken out from the grinding inner cylinder;
2. the non-magnetic conductive workpiece is processed by the following specific steps:
1) The method comprises the steps of (1) placing a processed non-magnetic conductive workpiece into an inner grinding cylinder, adding a magnetic abrasive into the inner grinding cylinder, and fixing an electromagnet to be not electrified during processing;
2) The PLC is used for controlling each grinding electromagnet to be powered on and powered off successively, so that the magnetic abrasive in the grinding inner cylinder is driven to impact and scratch the non-magnetic workpiece in the grinding inner cylinder, and grinding processing is realized;
3) The PLC is used for controlling each servo electric cylinder to sequentially act, and the six-degree-of-freedom platform drives the grinding device to perform overturning motions in different directions and angles, so that the motion track of the magnetic grinding material in the grinding inner cylinder is more complicated, and the grinding efficiency and the grinding quality are further improved;
4) After finishing grinding, resetting the servo electric cylinder, and recovering the upper platform to an initial horizontal state; the grinding electromagnet is powered off, the upper cover is opened, and the machined non-magnetic workpiece is taken out from the grinding inner cylinder.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention not only can realize the processing of the magnetic conduction piece and the non-magnetic conduction piece in the same device, but also can process the workpiece more uniformly, and has high automation degree and high grinding efficiency;
2) The motion of the six-degree-of-freedom platform in all directions realizes the complex diversification of the motion trail of the grinding particles in the grinding container, thereby realizing the grinding processing uniformity of the workpiece surface.
Drawings
Fig. 1 is a schematic perspective view of a six-degree-of-freedom swing magnetic grinding device according to the present invention.
Fig. 2 is a schematic perspective view of a six-degree-of-freedom swing magnetic grinding device according to the second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the polishing apparatus according to the present invention (for example, a magnetically conductive workpiece is processed).
Fig. 4 is a schematic distribution diagram of grinding electromagnets according to the present invention.
In the figure: 1. the lower bottom plate 2, the Hooke's joint 3, the servo electric cylinder 4, the electric cylinder push rod 5, the upper platform 6, the rib plate 7, the upper cover 8, the grinding inner cylinder 9, the grinding outer cylinder 10, the fixed electromagnet 11, the grinding electromagnet 12, the groove 13, the bolt 14, the grinding liquid/grinding paste 15, the magnetic conductive workpiece 16 and the non-magnetic abrasive material
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 1-3, the six-degree-of-freedom swinging magnetic grinding device comprises a six-degree-of-freedom platform and a grinding device, wherein the grinding device consists of a grinding outer cylinder 9, a grinding inner cylinder 8, a fixed electromagnet 10 and a grinding electromagnet 11; the grinding outer cylinder 9 is detachably arranged on the six-degree-of-freedom platform, a fixed electromagnet 10 is arranged at the center of the bottom of the grinding outer cylinder 9, the grinding inner cylinder 8 is movably arranged in the grinding outer cylinder 9, the bottom surface is contacted with the fixed electromagnet 10, and the top is closed by the upper cover 7; a plurality of grinding electromagnets 11 (shown in fig. 4) are uniformly arranged on the upper platform 5 outside the grinding outer cylinder 9 along the circumferential direction thereof; the six-degree-of-freedom platform is driven by 6 servo electric cylinders 3; when the magnetic conductive piece is processed, the grinding inner cylinder 8 is used for containing non-magnetic abrasive materials and grinding liquid/grinding paste, when the non-magnetic conductive piece is processed, the grinding inner cylinder 8 is used for containing magnetic abrasive materials, and a processed magnetic conductive workpiece or non-magnetic conductive workpiece is also arranged in the grinding inner cylinder 8.
The six-degree-of-freedom platform consists of a lower base plate 1, 12 Hooke hinges 2, 6 servo electric cylinders 3 and an upper platform 5, wherein fixed ends of the 6 servo electric cylinders 3 are respectively hinged with the lower base plate 1 through the Hooke hinges 2, and one ends of electric cylinder push rods 4 of the 6 servo electric cylinders 3 are respectively hinged with the upper platform 5 through the Hooke hinges 2.
The six-degree-of-freedom swinging magnetic grinding device further comprises a PLC controller, and each grinding electromagnet 11 is connected with the PLC controller through an intermediate relay; the servo motor of each servo motor cylinder 3 is connected with the PLC controller through a servo driver.
A plurality of rib plates 6 are uniformly arranged on the upper platform 5 on the outer side of the grinding outer cylinder 9 along the circumferential direction, a flanging structure is arranged at the top of the grinding outer cylinder 9, and the flanging structure is fixedly connected with the tops of the rib plates 6 through bolts 13; on the upper platform 5, grinding electromagnet 11 and rib plate 6 are arranged at intervals.
The number of the rib plates 6 and the number of the grinding electromagnets 11 are 6.
The top surface of the grinding inner cylinder 8 is higher than the top surface of the grinding outer cylinder 9.
A magnetic lapping method based on the device, comprising:
1. the magnetic conductive workpiece is processed by the following specific steps:
1) As shown in fig. 3, a magnetic conductive workpiece 15 is placed in the grinding inner cylinder 8, a non-magnetic abrasive 16 and grinding fluid/grinding paste are added into the grinding inner cylinder 8, and then the grinding inner cylinder 8 is sealed by an upper cover 7; the fixed electromagnet 10 is powered on during processing, and the grinding electromagnet 11 is not powered on; after the fixed electromagnet 10 is electrified, magnetic force is generated, and a magnetic conductive workpiece 15 placed in the grinding inner cylinder 8 is adsorbed and fixed in the grinding inner cylinder 8;
2) The PLC is used for controlling each servo electric cylinder 3 to sequentially act, and the six-degree-of-freedom platform drives the grinding device to perform overturning motions in different directions and angles; the grinding device is driven to swing through the posture adjustment of the six-degree-of-freedom platform, the non-magnetic grinding material 16 is used for realizing multidirectional impact scratching of the magnetic conductive workpiece 15, and the magnetic conductive workpiece 15 is polished;
3) After finishing grinding, resetting the servo electric cylinder 3, and recovering the upper platform 5 to an initial horizontal state; after the fixed electromagnet 10 is powered off, the upper cover 7 is opened, and the processed magnetic conductive workpiece 15 is taken out from the grinding inner cylinder 8;
2. the non-magnetic conductive workpiece is processed by the following specific steps:
1) The method comprises the steps of (1) placing a processed non-magnetic conductive workpiece into an inner grinding cylinder 8, adding a magnetic abrasive into the inner grinding cylinder 8, and fixing an electromagnet 10 to be not electrified during processing;
2) The PLC controls each grinding electromagnet 11 to be powered on and powered off successively, so that the magnetic abrasive in the grinding inner cylinder 8 is driven to impact and scratch the non-magnetic workpiece in the grinding inner cylinder 8, and grinding processing is realized;
3) The PLC is used for controlling each servo electric cylinder 3 to sequentially act, and the six-degree-of-freedom platform drives the grinding device to perform overturning motions in different directions and angles, so that the motion track of the magnetic grinding material in the grinding inner cylinder 8 is more complicated, and the grinding efficiency and the grinding quality are further improved;
4) After finishing grinding, resetting the servo electric cylinder 3, and recovering the upper platform 5 to an initial horizontal state; the grinding electromagnet 11 is powered off, the upper cover 7 is opened, and the machined non-magnetic workpiece is taken out from the grinding inner cylinder 8.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present invention, but the scope of the present invention is not limited to the following examples. The methods used in the examples described below are conventional methods unless otherwise specified.
[ example ]
In the six-degree-of-freedom swinging magnetic grinding device, a lower base plate 1 is positioned at the lowest part of the whole device, 6 grooves 14 connected with Hooke hinges 2 are formed in the lower base plate 1 and are connected with the Hooke hinges 2 through connectors, the Hooke hinges 2 are connected with 6 servo electric cylinders 3 at different positions and different angles, and the telescopic action of the servo electric cylinders 3 is controlled by a PLC (programmable logic controller) through a servo driver. One end of an electric cylinder push rod 4 of the servo electric cylinder 3 is connected with the upper platform 5 through a hook joint 2. When the 6 servo electric cylinders 3 perform telescopic actions, the upper platform 5 can be driven to do space motions such as lifting, pitching, rotating and overturning.
The center of the upper platform 5 is provided with a through hole for placing the grinding outer barrel 9, 6 rib plates 6 are uniformly arranged on the upper platform 5 outside the grinding outer barrel 9 along the circumferential direction, and the rib plates 6 are used for supporting the grinding outer barrel 9. The outer side of the grinding outer cylinder 9 and between each rib plate 6 are uniformly provided with 6 grinding electromagnets 11, the grinding electromagnets 11 are connected with a PLC (programmable logic controller) through an intermediate relay, and sequential power-on and power-off of the grinding electromagnets 11 can be realized through simple programming, so that the purpose of driving an internal magnetic abrasive to process a non-magnetic workpiece is realized.
The top of the grinding outer cylinder 9 is provided with a flanging structure, and the grinding outer cylinder is detachably connected with each rib plate 6 through bolts 13. A fixed electromagnet 10 is arranged at the center of the bottom of the grinding outer cylinder 9 and is used for fixing a magnetic conductive workpiece 15 to be processed.
The grinding inner cylinder 8 is arranged in the grinding outer cylinder 9, and the bottom of the grinding inner cylinder is contacted with a fixed electromagnet 10 in the grinding outer cylinder 9. The top upper edge of the grinding inner cylinder 8 is higher than the top upper edge of the grinding outer cylinder 9, so that the grinding inner cylinder 8 is conveniently taken out of the grinding outer cylinder 9, and the grinding inner cylinder 8 is sealed by the upper cover 7 during grinding, so that the grinding materials in the grinding inner cylinder are prevented from splashing. The upper cover 7 is engaged and fixed with the grinding inner cylinder 8.
In this embodiment, the method for performing magnetic grinding by using the six-degree-of-freedom swinging magnetic grinding device is as follows:
1. when the magnetic conduction piece is processed:
1) Placing a magnetic conductive workpiece 15 in the grinding inner cylinder 8, adding a non-magnetic abrasive 16 and grinding fluid/grinding paste 14 into the grinding inner cylinder 8, wherein the non-magnetic abrasive 16 comprises silicon carbide, brown alumina and the like, and then sealing the grinding inner cylinder 8 by using an upper cover 7; after the fixed electromagnet 10 is electrified, magnetic force is generated, and a magnetic conductive workpiece 15 placed in the grinding inner cylinder 8 is adsorbed and fixed in the grinding inner cylinder 8;
2) The PLC is used for controlling each servo electric cylinder 3 to sequentially act, and the six-degree-of-freedom platform drives the grinding device to perform overturning motions in different directions and angles; the grinding device is driven to swing through the posture adjustment of the six-degree-of-freedom platform, the non-magnetic grinding material 16 is used for realizing multidirectional impact scratching of the magnetic conductive workpiece 15, and the magnetic conductive workpiece 15 is polished;
3) After finishing grinding, resetting the servo electric cylinder 3, and recovering the upper platform 5 to an initial horizontal state; after the fixed electromagnet 10 is powered off, the upper cover is opened, and the processed magnetic conductive workpiece 15 is taken out from the grinding inner cylinder 8;
2. processing a non-magnetic conductive piece:
1) The processed non-magnetic conductive workpiece is placed in an inner grinding cylinder 8, a magnetic abrasive is added in the inner grinding cylinder 8, and a fixed electromagnet 10 is not electrified; the magnetic abrasive is prepared by sintering iron powder and aluminum oxide powder, crushing and sieving;
2) The PLC controls each grinding electromagnet 11 to be powered on and powered off successively, so that the magnetic abrasive in the grinding inner cylinder 8 is driven to impact and scratch the non-magnetic workpiece in the grinding inner cylinder 8, and grinding processing is realized;
3) The PLC is used for controlling each servo electric cylinder 3 to sequentially act, and the six-degree-of-freedom platform drives the grinding device to perform overturning motions in different directions and angles, so that the motion track of the magnetic grinding material in the grinding inner cylinder 8 is more complicated, and the grinding efficiency and the grinding quality are further improved;
4) After finishing grinding, resetting the servo electric cylinder 3, and recovering the upper platform 5 to an initial horizontal state; the grinding electromagnet 11 is powered off, the upper cover 7 is opened, and the machined non-magnetic workpiece is taken out from the grinding inner cylinder 8.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. A magnetic grinding method, which is characterized in that the magnetic grinding device based on six-degree-of-freedom swing is realized; the six-degree-of-freedom swinging magnetic grinding device comprises a six-degree-of-freedom platform and a grinding device, wherein the grinding device consists of a grinding outer cylinder, a grinding inner cylinder, a fixed electromagnet and a grinding electromagnet; the grinding outer cylinder is detachably arranged on the six-degree-of-freedom platform, the fixed electromagnet is arranged at the center of the bottom of the grinding outer cylinder, the grinding inner cylinder is movably arranged in the grinding outer cylinder, the bottom surface of the grinding inner cylinder is contacted with the fixed electromagnet, and the top of the grinding inner cylinder is closed through the upper cover; a plurality of grinding electromagnets are uniformly arranged on the upper platform at the outer side of the grinding outer cylinder along the circumferential direction of the upper platform; the six-degree-of-freedom platform is driven by 6 servo electric cylinders; when the magnetic conductive workpiece is processed, the grinding inner cylinder is used for containing non-magnetic abrasive materials and grinding liquid/grinding paste, and when the non-magnetic conductive workpiece is processed, the grinding inner cylinder is used for containing magnetic abrasive materials, and the processed magnetic conductive workpiece or the non-magnetic conductive workpiece is also arranged in the grinding inner cylinder;
the magnetic grinding method comprises the following steps:
1. the magnetic conductive workpiece is processed by the following specific steps:
1) Placing a magnetic conductive workpiece in an inner grinding cylinder, adding a non-magnetic abrasive material, grinding fluid/grinding paste into the inner grinding cylinder, and sealing the inner grinding cylinder by using an upper cover; the electromagnet is fixed to be electrified during processing, and the grinding electromagnet is not electrified; after the fixed electromagnet is electrified, magnetic force is generated, and a magnetic conductive workpiece placed in the grinding inner cylinder is adsorbed and fixed in the grinding inner cylinder;
2) The PLC is used for controlling each servo electric cylinder to sequentially act, and the six-degree-of-freedom platform drives the grinding device to perform overturning motions in different directions and angles; the grinding device is driven to swing through the posture adjustment of the six-degree-of-freedom platform, and the non-magnetic abrasive material is used for realizing multidirectional impact scratching of the magnetic conductive workpiece, so that the magnetic conductive workpiece is polished;
3) After finishing grinding, resetting the servo electric cylinder, and recovering the upper platform to an initial horizontal state; after the fixed electromagnet is powered off, the upper cover is opened, and the processed magnetic conductive workpiece is taken out from the grinding inner cylinder;
2. the non-magnetic conductive workpiece is processed by the following specific steps:
1) The method comprises the steps of (1) placing a processed non-magnetic conductive workpiece into an inner grinding cylinder, adding a magnetic abrasive into the inner grinding cylinder, and fixing an electromagnet to be not electrified during processing;
2) The PLC is used for controlling each grinding electromagnet to be powered on and powered off successively, so that the magnetic abrasive in the grinding inner cylinder is driven to impact and scratch the non-magnetic workpiece in the grinding inner cylinder, and grinding processing is realized;
3) The PLC is used for controlling each servo electric cylinder to sequentially act, and the six-degree-of-freedom platform drives the grinding device to perform overturning motions in different directions and angles, so that the motion track of the magnetic grinding material in the grinding inner cylinder is more complicated, and the grinding efficiency and the grinding quality are further improved;
4) After finishing grinding, resetting the servo electric cylinder, and recovering the upper platform to an initial horizontal state; the grinding electromagnet is powered off, the upper cover is opened, and the machined non-magnetic workpiece is taken out from the grinding inner cylinder.
2. The magnetic grinding method according to claim 1, wherein the six-degree-of-freedom platform is composed of a lower base plate, 12 hook joints, 6 servo electric cylinders and an upper platform, fixed ends of the 6 servo electric cylinders are respectively hinged with the lower base plate through the hook joints, and one ends of electric cylinder push rods of the 6 servo electric cylinders are respectively hinged with the upper platform through the hook joints.
3. The method of claim 1, further comprising a PLC controller, each grinding electromagnet being connected to the PLC controller by an intermediate relay; the servo motor of each servo electric cylinder is connected with the PLC controller through a servo driver.
4. The magnetic grinding method according to claim 1, wherein a plurality of rib plates are uniformly arranged on the upper platform outside the grinding outer cylinder along the circumferential direction, a flanging structure is arranged at the top of the grinding outer cylinder, and the flanging structure is fixedly connected with the tops of the rib plates through bolts; on the upper platform, grinding electromagnets and rib plates are arranged at intervals.
5. The method of claim 4, wherein the number of ribs and grinding electromagnets is 6.
6. The method of claim 1, wherein the top surface of the inner grinding cylinder is higher than the top surface of the outer grinding cylinder.
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| CN110181385B (en) * | 2019-05-28 | 2021-07-23 | 上饶市鸿创新材料有限公司 | Aluminum magnesium alloy die casting surface treatment device and treatment method |
| CN111230717B (en) * | 2020-01-14 | 2022-03-08 | 江苏科技大学 | Burr removing device for inner hole and outer surface of workpiece |
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| Title |
|---|
| 超声振动辅助磁力研磨协同增效 机制与试验研究;康璐，陈燕，赵杨，马学东;《航空制造技术》;第第61卷卷(第第21期期);57-62 * |
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| CN109648457A (en) | 2019-04-19 |
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