CN110605654A - Through hole polishing device and method under variable electric field and rotating magnetic field - Google Patents
Through hole polishing device and method under variable electric field and rotating magnetic field Download PDFInfo
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- CN110605654A CN110605654A CN201910984205.0A CN201910984205A CN110605654A CN 110605654 A CN110605654 A CN 110605654A CN 201910984205 A CN201910984205 A CN 201910984205A CN 110605654 A CN110605654 A CN 110605654A
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- 238000005498 polishing Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000005684 electric field Effects 0.000 title claims abstract description 19
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 63
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 53
- 230000001360 synchronised effect Effects 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 6
- 238000007517 polishing process Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 5
- 238000010146 3D printing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000006061 abrasive grain Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000010254 Jasminum officinale Nutrition 0.000 description 1
- 240000005385 Jasminum sambac Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005300 metallic glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 238000007639 printing Methods 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
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a through hole polishing device and a method thereof under a variable electric field and a rotating magnetic field, comprising a sliding guide rail clamping component, a rotating driving component, a movable end clamping component, a fixed end clamping component and a magnet component; the sliding guide rail clamping assembly comprises a guide rail driving motor, a horizontal linear module, a coupler, a motor base and a movable plate, the movable end clamping assembly comprises a left piston rod, a left piston pipe, a left bidirectional connecting base, a left workpiece clamping head and a left inflatable piston cover, and the fixed end clamping assembly comprises a right bidirectional connecting base, a right piston pipe, a right piston rod, a right inflatable piston cover, a right workpiece clamping head and a right fixed base; the rotary driving assembly comprises a bearing sleeve, a synchronous belt, a rotary driving motor, a driven belt wheel and a driving belt wheel, the polishing device can polish the bent inner hole on a machined workpiece printed by 3D by controlling liquid metal, and the polishing automation of the bent inner hole is realized.
Description
Technical Field
The invention relates to the field of liquid metal polishing, in particular to a through hole polishing device and method under the condition of changing an electric field and a rotating magnetic field.
Background
Polishing is a process that uses mechanical, chemical or electrochemical action to reduce the roughness of the surface of a workpiece to obtain a bright, flat surface. The method is to carry out modification processing on the surface of a workpiece by using a polishing tool and abrasive particles or other polishing media. Currently, mechanical polishing, chemical polishing, electrolytic polishing, etc. are commonly used polishing methods.
Liquid metal refers to an amorphous metal that can be viewed as a mixture of a positively ionic fluid and a free electron gas. Liquid metal is also an amorphous, flowable liquid metal. The liquid metal polishing refers to polishing work of a workpiece by liquid metal mixed liquid mixed with abrasive particles under a changing magnetic field and an electric field.
3D printing is one of the rapid prototyping technologies, which is a technology for constructing an object by using a bondable material such as powdered metal or plastic based on a digital model file and by printing layer by layer. Along with the continuous maturity of 3D printing technique, the application scope is more and more extensive, and does not have a suitable method to the through-hole processing of 3D printing product at present, mainly still through the manual work processing of polishing, can't realize the automatic polishing of through-hole, and machining efficiency is not high to the quality of processing can't obtain guaranteeing.
For polishing of a bent through hole of a workpiece, the traditional mechanical and chemical polishing technology cannot be adopted, so abrasive flow polishing and liquid metal polishing are generally adopted, but the efficiency of pure abrasive flow and liquid metal polishing is possibly low, and the polishing time is long.
Disclosure of Invention
The invention aims to solve the problems that the polishing efficiency of a bent inner hole of a 3D printed workpiece is low, the period is long, and automatic polishing cannot be realized, and provides a through hole polishing device and a through hole polishing method under a variable electric field and a rotating magnetic field, which can automatically realize polishing of the bent inner hole of the 3D printed workpiece, and have the advantages of high polishing efficiency, high automation degree, great labor cost saving and processing efficiency improvement.
The invention realizes the purpose through the following technical scheme: a through hole polishing device under a variable electric field and a rotary magnetic field comprises a sliding guide rail clamping assembly, a rotary driving assembly, a movable end clamping assembly, a fixed end clamping assembly and a magnet assembly;
the sliding guide rail clamping assembly comprises a guide rail driving motor, a horizontal linear module, a coupler, a motor base and a movable plate, wherein the horizontal linear module is horizontally arranged on the working table surface;
the movable end clamping assembly comprises a left piston rod, a left piston tube, a left bidirectional connecting seat, a left workpiece clamping head and a left inflation piston cover, one end of the left piston tube is fixedly connected with one end of the left bidirectional connecting seat, the left bidirectional connecting seat is fixedly connected with the left workpiece clamping head, the other end of the left piston tube is sleeved with the left inflation piston cover, a left piston is arranged in the left piston tube, one end of the left piston rod is connected with the left piston, the other end of the left piston rod penetrates through the left inflation piston cover to extend out of the left inflation piston cover, an inflation cavity communicated with an inner cavity of the left piston tube is arranged on the left inflation piston cover, an inflation port communicated with the inflation cavity is arranged on the left inflation piston cover, and an external inflation device with a control valve is connected with the inflation port of the left inflation piston cover through an inflation pipeline;
the fixed end clamping assembly comprises a right bidirectional connecting seat, a right piston tube, a right piston rod, a right inflating piston cover, a right workpiece clamping head and a right fixed seat, one end of the right piston tube is fixedly connected to one end of the right bidirectional connecting seat, the other end of the right bidirectional connecting seat is connected with the right inflating piston cover, a right piston is arranged in the right piston tube, one end of the right piston rod is connected with the right piston, the other end of the right piston rod sequentially penetrates through the right inflating piston cover of the right bidirectional connecting seat to extend out of the right inflating piston cover, an inflating cavity communicated with the inner cavity of the right piston tube is formed in the right inflating piston cover, an inflating port communicated with the inflating cavity is formed in the right inflating piston cover, and the inflating port of the right inflating piston cover is connected with an external inflating device with a control valve through another; the other end of the right piston tube is connected with a right workpiece clamping head through a bidirectional hexagonal threaded abrasive flow joint; the bidirectional hexagonal thread abrasive flow joint is provided with an abrasive flow inlet, the abrasive flow inlet is connected with an external abrasive flow generating device with an abrasive flow control valve through a pipeline, and the bidirectional hexagonal thread abrasive flow joint is communicated with a piston cavity on one side, close to a workpiece to be processed, of the right piston pipe;
the rotary driving assembly comprises a bearing sleeve, a synchronous belt, a rotary driving motor, a driven belt wheel and a driving belt wheel, the bearing sleeve is sleeved on the right piston tube through a bearing, the driven belt wheel is fixed on the bearing sleeve, the rotary driving motor is fixed on the right fixing seat, an output shaft of the rotary driving motor is connected with the driving belt wheel, and the driving belt wheel is connected with the driven belt wheel on the bearing sleeve through the synchronous belt; when the rotary driving motor moves, a synchronous belt mechanism consisting of a driving belt wheel, a driven belt wheel and a synchronous belt drives the bearing sleeve to rotate on the right piston pipe;
the magnet assembly comprises at least four strip-shaped permanent magnets, all the strip-shaped permanent magnets are horizontally arranged around a workpiece to be processed, one ends of all the strip-shaped permanent magnets are fixed on the bearing sleeve, and all the strip-shaped permanent magnets are uniformly distributed on the bearing sleeve along the circumferential direction;
the axial lead of left side two-way connecting seat, right side two-way connecting seat, left side work piece clamping head, right side work piece clamping head, left piston pipe and right piston pipe all is located same straight line, left side work piece clamping head and right side work piece clamping head centre gripping respectively are treating both ends about processing the work piece, treat that the one end of the crooked hole on the processing work piece is linked together through left side work piece clamping head and left piston pipe, treat that the other end of the crooked hole on the processing work piece is linked together through right side work piece clamping head and right piston pipe.
Furthermore, the left piston tube is connected with the left workpiece clamping head in a sealing mode through a sealing ring, and the right piston tube is connected with the right workpiece clamping head in a sealing mode through a sealing ring.
Furthermore, the left bidirectional connecting seat is provided with a left threaded connector and a right threaded connector, one end of the left piston tube is provided with an internal thread matched with the left threaded connector on the left bidirectional connecting seat, and the left piston tube is fixedly connected with the left bidirectional connecting seat through the matching of the internal thread and the left threaded connector on the left bidirectional connecting seat; the right-side bidirectional connecting seat is provided with a left-side threaded connector and a right-side threaded connector, one end of the right piston pipe is provided with an internal thread matched with the left-side threaded connector on the right-side bidirectional connecting seat, and the right piston pipe is fixedly connected with the right-side bidirectional connecting seat through the matching of the internal thread and the left-side threaded connector on the right-side bidirectional connecting seat.
Furthermore, the mounting ends of the left workpiece clamping head and the right workpiece clamping head are designed in a copying manner, different copying ends are designed for different workpieces, and two ends of the workpiece to be processed are respectively in sealing connection with the mounting ends of the left workpiece clamping head and the right workpiece clamping head.
Further, a sleeve is further sleeved on the right rotary pipeline, and the sleeve on the right rotary pipeline is arranged between the right rotary joint and the right bearing seat; still the cover is equipped with the sleeve on the rotatory pipeline of left side, and the sleeve setting on the rotatory pipeline of left side is between left rotary joint and left side bearing frame.
Furthermore, the installation ends of the left workpiece clamping head and the right workpiece clamping head are respectively provided with a conductive copper ring, and the two conductive copper rings are connected with two output lines of an external square wave alternating current power supply through two wires.
The through hole polishing method under the variable electric field and the rotating magnetic field based on the through hole polishing device under the variable electric field and the rotating magnetic field specifically comprises the following steps:
the method comprises the following steps: fixing one end of a workpiece to be machined in a right workpiece clamping head, starting a guide rail driving motor, driving the whole body consisting of a sliding block and a movable plate of a horizontal linear module to move along a straight line through a coupler, enabling a left workpiece clamping head to be gradually close to the other end of the workpiece to be machined until the workpiece to be machined is clamped between the left workpiece clamping head and the right workpiece clamping head, completely sealing the two ends of the workpiece to be machined with the left workpiece clamping head and the right workpiece clamping head, stopping the guide rail driving motor at the moment, and respectively communicating the two ends of a bent inner hole on the workpiece to be machined with the insides of the left workpiece clamping head and the right workpiece clamping head;
step two: injecting a liquid metal abrasive particle mixed solution into the whole device through a bidirectional hexagonal threaded abrasive particle flow joint by utilizing an abrasive particle flow generating device connected with an abrasive particle flow inlet on the bidirectional hexagonal threaded abrasive particle flow joint through a pipeline until the interior of a bent inner hole on a workpiece to be processed is filled with the liquid metal abrasive particle mixed solution;
step three: respectively connecting inflation ports of the right side inflatable piston cover and the left side inflatable piston cover with inflation devices with control valves, performing interval air supply on inflation cavities in the right side inflatable piston cover and the left side inflatable piston cover by controlling the opening and closing of the control valves, closing the control valves connected with the left side inflatable piston cover when the control valves connected with the right side inflatable piston cover are opened, and closing the control valves connected with the right side inflatable piston cover when the control valves connected with the left side inflatable piston cover are opened, so that the pistons connected with the left piston rod and the right piston rod are pushed to move continuously left and right, and liquid metal abrasive grain mixed liquid in a bent inner hole on a workpiece to be processed is pushed to reciprocate left and right;
step four: turning on a rotary driving motor, wherein the rotary driving motor drives the whole body consisting of the bearing sleeve and the strip-shaped permanent magnet to rotate through a synchronous belt mechanism consisting of a driving belt wheel, a synchronous belt and a driven belt wheel, so that a rotating magnetic field is formed at the periphery of the workpiece to be processed, liquid metal of a liquid metal abrasive particle mixed solution in the bent through hole of the workpiece to be processed is driven to start rotating, and abrasive particles are driven to efficiently polish the bent through hole;
step five: after a certain time, the bent inner hole on the workpiece to be machined is machined, the rotary driving motor is turned off, the guide rail driving motor is started to enable the workpiece clamping head on the left side to move back, the workpiece to be machined is taken down, the liquid metal abrasive particle mixed liquid in the whole device is poured out, and the whole bent inner hole polishing process is completed.
Further, when waiting to process the work piece and making by metal material, open external square wave alternating current power supply, for copper ring switch-on square wave alternating current on left side work piece holding head and the right side work piece holding head, because it is metal material to wait to process the work piece, make things convenient for the alternating current finally to use in the liquid metal of liquid metal abrasive particle mixed liquid, make liquid metal take place axial fluctuation, further make the abrasive particle in the liquid metal abrasive particle mixed liquid take place axial vibration, process limit etc. is more unordered when making a round trip to polish the crooked hole on waiting to process the work piece.
The invention has the beneficial effects that: .
1. According to the invention, the polishing of the bent inner hole on the workpiece to be processed printed by 3D can be realized by controlling the liquid metal, the automation of the polishing of the bent inner hole is realized, the labor cost is saved, and higher polishing precision can be obtained by the automatic processing, so that the efficiency is greatly improved.
2. According to the invention, the liquid metal is mixed with the abrasive particles to polish the bent inner hole of the workpiece to be processed, so that higher polishing precision can be obtained, and the liquid metal in the liquid metal abrasive particle mixed liquid can be controlled to a certain degree, so that the polishing is more sufficient and controllable.
3. The invention assembles a plurality of bar-shaped permanent magnets outside a workpiece to be processed, then generates a rotating magnetic field by rotating the bar-shaped permanent magnets, and drives the liquid metal in the liquid metal abrasive particle mixed liquid in the workpiece to be processed to rotate by utilizing the rotating magnetic field applied by the bar-shaped permanent magnets, so that the abrasive particles in the liquid metal abrasive particle mixed liquid continuously polish the inner hole of the workpiece.
4. According to the invention, by applying square wave alternating current, an axially-changing electric field is formed in the liquid metal abrasive particle mixed liquid to push the liquid metal in the liquid metal jasmine mixed liquid to axially reciprocate, so that the liquid metal abrasive particle mixed liquid is more disordered and disordered in the polishing process, the dead-angle-free polishing of a bent inner hole of a workpiece is realized by combining a rotating magnetic field, and the polishing quality is also ensured.
5. Under the combined action of the variable rotating magnetic field and the axially constantly-changing electric field, the liquid metal in the liquid metal abrasive particle mixed liquid can drive abrasive particles mixed in the liquid metal abrasive particle mixed liquid to better and more fully process the inner hole of the workpiece, and the moving efficiency of the piston is higher than that of the traditional piston.
Drawings
FIG. 1 is a schematic diagram showing the overall structure of a through-hole polishing apparatus according to the present invention under varying electric fields and rotating magnetic fields.
Fig. 2 is a top view of a via hole polishing apparatus under varying electric and rotating magnetic fields in accordance with the present invention.
Fig. 3 is a schematic cross-sectional view of the loose-end clamp assembly of the present invention.
Fig. 4 is a schematic cross-sectional view of a fixed end clamp assembly of the present invention.
Figure 5 is a schematic structural view of a first embodiment of a left workpiece holding head and a right workpiece holding head of the present invention.
Figure 6 is a schematic structural view of a left workpiece holding head and a right workpiece holding head according to a second embodiment of the present invention.
Figure 7 is a schematic structural view of a third embodiment of a left workpiece holding head and a right workpiece holding head of the present invention.
In the figure, 1-synchronous belt, 2-right workpiece clamping head, 3-workpiece to be processed, 4-movable plate, 5-horizontal linear module, 6-coupler, 7-guide rail driving motor, 8-left piston rod, 9-left side inflating piston cover, 10-left piston tube, 11-left side bidirectional connecting seat, 12-left workpiece clamping head, 13-bidirectional hexagonal thread abrasive particle flow joint, 14-strip permanent magnet, 15-right piston tube, 16-bearing sleeve, 17-driven pulley, 18-right side fixing seat, 19-right side bidirectional connecting seat, 20-right piston rod, 21-right side inflating piston cover, 22-rotary driving motor, 23-rotary motor seat, 24-O type sealing ring, 25-conductive copper ring, 27-deep groove ball bearing, 28-sleeve, 29-piston retaining ring, 30-left piston, 31-right piston and 32-inflation port.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in FIGS. 1 to 7, the through hole polishing device under the condition of changing the electric field and the rotating magnetic field comprises a sliding guide rail clamping assembly, a rotating driving assembly, a movable end clamping assembly, a fixed end clamping assembly and a magnet assembly.
Slide rail clamping components includes guide rail driving motor 7, horizontal linear module 5, shaft coupling 6, motor cabinet and fly leaf 4, horizontal linear module 5 horizontal installation is on table surface, and guide rail driving motor 7 passes through the motor cabinet to be fixed in the one end of horizontal linear module 5, and guide rail driving motor 7's output shaft passes through shaft coupling 6 and connects horizontal linear module 5, fly leaf 4 is fixed on horizontal linear module 5's slider, and the slider of drive horizontal linear module 5 and fly leaf 4 are at horizontal direction linear motion when guide rail driving motor 7 moves.
The movable end clamping component comprises a left piston rod 8, a left piston tube 10, a left bidirectional connecting seat 11, a left workpiece clamping head 12 and a left inflating piston cover 9, one end of the left piston tube 10 is fixedly connected with one end of a left bidirectional connecting seat 11, the left bidirectional connecting seat 11 is fixedly connected with a left workpiece clamping head 12, the other end of the left piston tube 10 is sleeved with a left inflation piston cover 9, a left piston 30 is arranged in the left piston tube 10, one end of a left piston rod 8 is connected with the left piston 30, the other end of the left piston rod 8 passes through the left inflation piston cover 9 and extends out of the left inflation piston cover 9, an inflation cavity communicated with the inner cavity of the left piston tube 10 is formed in the left inflation piston cover 9, an inflation opening 32 communicated with the inflation cavity is formed in the left inflation piston cover 9, and the inflation opening 32 of the left inflation piston cover 9 is connected with an external inflation device with a control valve through an inflation pipeline. The end of the left piston tube 10 is provided with a piston stop ring 29 for preventing the left piston 30 from extending out of the left piston tube 10.
The fixed end clamping component comprises a right bidirectional connecting seat 19, a right piston tube 15, a right piston rod 20, a right inflatable piston cover 21, a right workpiece clamping head 2 and a right fixed seat 18, one end of the right piston tube 15 is fixedly connected with one end of the right bidirectional connecting seat 19, the other end of the right bidirectional connecting seat 19 is connected with the right inflatable piston cover 21, the right piston 31 is arranged in the right piston tube 15, one end of the right piston rod 20 is connected with the right piston 31, the other end of the right piston rod 20 sequentially penetrates through the right inflatable piston cover 21 of the right bidirectional connecting seat 19 and extends out of the right inflatable piston cover 21, an inflation cavity communicated with the inner cavity of the right piston tube 15 is formed in the right inflation piston cover 21, an inflation opening 32 communicated with the inflation cavity is formed in the right inflation piston cover 21, and the inflation opening 32 of the right inflation piston cover 21 is connected with an external inflation device with a control valve through another inflation pipeline; the other end of the right piston tube 15 is connected with a right workpiece clamping head 2 through a bidirectional hexagonal threaded abrasive flow joint 13; the bidirectional hexagonal thread abrasive flow joint 13 is provided with an abrasive flow inlet, the abrasive flow inlet is connected with an external abrasive flow generating device with an abrasive flow control valve through a pipeline, and the bidirectional hexagonal thread abrasive flow joint 13 is communicated with a piston cavity on one side, close to the workpiece 3 to be processed, of the right piston pipe 15. The right piston tube 15 is further sleeved with a sleeve 28, and the sleeve 28 is arranged between the bearing sleeve 16 and the right bidirectional connecting seat 19 and used for preventing the bearing sleeve 16 from axially moving when rotating.
The rotary driving assembly comprises a bearing sleeve 16, a synchronous belt 1, a rotary driving motor 22, a driven belt pulley 17 and a driving belt pulley, wherein the bearing sleeve 16 is arranged on the right piston tube 15 through the bearing sleeve 16, the driven belt pulley 17 is fixed on the bearing sleeve 16, the rotary driving motor 22 is fixed on the right fixed seat 18, an output shaft of the rotary driving motor 22 is connected with the driving belt pulley, and the driving belt pulley is connected with the driven belt pulley 17 on the bearing sleeve 16 through the synchronous belt 1; when the rotary driving motor 22 moves, the synchronous belt 1 mechanism composed of the driving pulley, the driven pulley 17 and the synchronous belt 1 drives the bearing sleeve 16 to rotate on the right piston tube 15.
The magnet assembly comprises at least four strip-shaped permanent magnets 14, all the strip-shaped permanent magnets 14 are horizontally arranged around the workpiece 3 to be processed, one ends of all the strip-shaped permanent magnets 14 are fixed on the bearing sleeve 16, and all the strip-shaped permanent magnets 14 are uniformly distributed on the bearing sleeve 16 along the circumferential direction.
The axial lead of two-way connecting seat 11 in left side, two-way connecting seat 19 in right side, left side work piece clamping head 12, right side work piece clamping head 2, left piston pipe 10 and right piston pipe 15 all is located same straight line, left side work piece clamping head 12 and right side work piece clamping head 2 centre gripping are treating both ends about processing work piece 3 respectively, treat that the one end of the crooked hole on processing work piece 3 is linked together through left side work piece clamping head 12 and left piston pipe 10, treat that the other end of the crooked hole on processing work piece 3 is linked together through right side work piece clamping head 2 and right piston pipe 15.
The left piston tube 10 is connected with the left workpiece clamping head 12 in a sealing mode through a sealing ring, and the right piston tube 15 is connected with the right workpiece clamping head 2 in a sealing mode through a sealing ring.
The left bidirectional connecting seat 11 is provided with a left threaded joint and a right threaded joint, one end of the left piston tube 10 is provided with an internal thread matched with the left threaded joint on the left bidirectional connecting seat 11, and the left piston tube 10 is fixedly connected with the left bidirectional connecting seat 11 through the matching of the internal thread and the left threaded joint on the left bidirectional connecting seat 11; the right bidirectional connecting seat 19 is provided with a left threaded joint and a right threaded joint, one end of the right piston pipe 15 is provided with an internal thread matched with the left threaded joint on the right bidirectional connecting seat 19, and the right piston pipe 15 is fixedly connected with the right bidirectional connecting seat 19 through the matching of the internal thread and the left threaded joint on the right bidirectional connecting seat 19.
As shown in fig. 5 to 7, the installation ends of the left workpiece holding head 12 and the right workpiece holding head 2 are designed in a copying manner, different copying ends are designed for different workpieces, and not only can the shapes of the two ends of the workpiece to be processed be round, triangular and square, but also can be designed into other arbitrary copying shapes, and only sealing after installation is required to be ensured, so that the two ends of the workpiece to be processed 3 are respectively connected with the installation ends of the left workpiece holding head 12 and the right workpiece holding head 2 in a sealing manner.
The sleeve on the right rotary pipeline is arranged between the right rotary joint and the right bearing seat; still the cover is equipped with the sleeve on the rotatory pipeline of left side, and the sleeve setting on the rotatory pipeline of left side is between left rotary joint and left side bearing frame.
And the mounting ends of the left workpiece clamping head 12 and the right workpiece clamping head 2 are both provided with conductive copper rings 25, and the two conductive copper rings 25 are connected with two output lines of an external square wave alternating current power supply through two wires.
The through hole polishing method under the variable electric field and the rotating magnetic field based on the through hole polishing device under the variable electric field and the rotating magnetic field specifically comprises the following steps:
the method comprises the following steps: fixing one end of a workpiece 3 to be machined in a right workpiece clamping head 2, starting a guide rail driving motor 7, driving the whole body consisting of a sliding block and a movable plate 4 of a horizontal linear module 5 to move along a straight line through a coupler 6, enabling a left workpiece clamping head 12 to gradually approach to the other end of the workpiece 3 to be machined until the workpiece 3 to be machined is clamped between the left workpiece clamping head 12 and the right workpiece clamping head 2, completely sealing two ends of the workpiece 3 to be machined between the left workpiece clamping head 12 and the right workpiece clamping head 2, stopping the guide rail driving motor 7 at the moment, and respectively communicating two ends of a bent inner hole on the workpiece 3 to be machined with the insides of the left workpiece clamping head 12 and the right workpiece clamping head 2;
step two: injecting a liquid metal abrasive particle mixed solution into the whole device through the bidirectional hexagonal threaded abrasive particle flow joint 13 by using an abrasive particle flow generating device connected with an abrasive particle flow inlet on the bidirectional hexagonal threaded abrasive particle flow joint 13 through a pipeline until the inside of a bent inner hole on the workpiece 3 to be processed is filled with the liquid metal abrasive particle mixed solution;
step three: respectively connecting the inflating ports 32 of the right inflating piston cover 21 and the left inflating piston cover 9 with inflating devices with control valves, performing interval air supply on inflating cavities in the right inflating piston cover 21 and the left inflating piston cover 9 by controlling the opening and closing of the control valves, closing the control valve connected with the left inflating piston cover 9 when the control valve connected with the right inflating piston cover 21 is opened, and closing the control valve connected with the right inflating piston cover 21 when the control valve connected with the left inflating piston cover 9 is opened, so that the pistons connected with the left piston rod 8 and the right piston rod 20 are pushed to continuously move left and right, and liquid metal abrasive grain in a bent inner hole on the workpiece 3 to be processed is pushed to reciprocate left and right;
step four: turning on a rotary driving motor 22, wherein the rotary driving motor 22 drives the whole body consisting of the bearing sleeve 16 and the strip-shaped permanent magnet 14 to rotate through a synchronous belt 1 mechanism consisting of a driving belt wheel, a synchronous belt 1 and a driven belt wheel 17, so that a rotary magnetic field is formed at the periphery of the workpiece 3 to be processed, liquid metal of a liquid metal abrasive particle mixed liquid in a bent through hole of the workpiece 3 to be processed is driven to rotate, and the abrasive particles are driven to efficiently polish the bent through hole;
step five: after a certain time, the bent inner hole on the workpiece 3 to be machined is machined, the rotary driving motor 22 is turned off, the guide rail driving motor 7 is started to enable the workpiece clamping head 12 on the left side to move back, the workpiece 3 to be machined is taken down, the liquid metal abrasive particle mixed liquid in the whole device is poured out, and the whole bent inner hole polishing process is completed.
When waiting to process work piece 3 and being made by metal material, open external square wave alternating current power supply, for the copper ring switch-on square wave alternating current on left side work piece holding head 12 and the right side work piece holding head 2, because it is metal material to wait to process work piece 3, make things convenient for the alternating current finally to use in the liquid metal of liquid metal abrasive particle mixed liquid, make the liquid metal take place axial fluctuation, further make the abrasive particle in the liquid metal abrasive particle mixed liquid take place axial vibration, the process becomes more unordered when making a round trip to polish the crooked hole on waiting to process work piece 3.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (8)
1. The utility model provides a through-hole burnishing device under change electric field and rotating magnetic field which characterized in that: the device comprises a sliding guide rail clamping assembly, a rotary driving assembly, a movable end clamping assembly, a fixed end clamping assembly and a magnet assembly;
the sliding guide rail clamping assembly comprises a guide rail driving motor (7), a horizontal linear module (5), a coupler (6), a motor base and a movable plate (4), the horizontal linear module (5) is horizontally installed on a workbench surface, the guide rail driving motor (7) is fixed at one end of the horizontal linear module (5) through the motor base, an output shaft of the guide rail driving motor (7) is connected with the horizontal linear module (5) through the coupler (6), the movable plate (4) is fixed on a sliding block of the horizontal linear module (5), and the sliding block of the horizontal linear module (5) and the movable plate (4) are driven to linearly move in the horizontal direction when the guide rail driving motor (7) moves;
the movable end clamping assembly comprises a left piston rod (8), a left piston tube (10), a left bidirectional connecting seat (11), a left workpiece clamping head (12) and a left inflatable piston cover (9), one end of the left piston tube (10) is fixedly connected to one end of the left bidirectional connecting seat (11), the left bidirectional connecting seat (11) is fixedly connected with the left workpiece clamping head (12), the other end of the left piston tube (10) is sleeved with the left inflatable piston cover (9), a left piston (30) is arranged in the left piston tube (10), one end of the left piston rod (8) is connected with the left piston (30), the other end of the left piston rod (8) penetrates through the left inflatable piston cover (9) to extend out of the left inflatable piston cover (9), an inflatable cavity communicated with the inner cavity of the left piston tube (10) is arranged on the left inflatable piston cover (9), an inflation port (32) communicated with the inflatable cavity is arranged on the left inflatable piston cover (9), the inflation inlet (32) of the left inflation piston cover (9) is connected with an external inflation device with a control valve through an inflation pipeline;
the fixed end clamping assembly comprises a right bidirectional connecting seat (19), a right piston tube (15), a right piston rod (20), a right inflatable piston cover (21), a right workpiece clamping head (2) and a right fixing seat (18), one end of the right piston tube (15) is fixedly connected to one end of the right bidirectional connecting seat (19), the other end of the right bidirectional connecting seat (19) is connected with the right inflatable piston cover (21), a right piston (31) is arranged in the right piston tube (15), one end of the right piston rod (20) is connected with the right piston (31), the other end of the right piston rod (20) sequentially penetrates through the right bidirectional connecting seat (19), the right inflatable piston cover (21) extends out of the right inflatable piston cover (21), an inflatable cavity communicated with the inner cavity of the right piston tube (15) is arranged on the right inflatable piston cover (21), and an inflation port (32) communicated with the inflatable cavity is arranged on the right inflatable piston cover (21), the inflation inlet (32) of the right inflation piston cover (21) is connected with an external inflation device with a control valve through another inflation pipeline; the other end of the right piston tube (15) is connected with a right workpiece clamping head (2) through a bidirectional hexagonal threaded abrasive flow joint (13); the bidirectional hexagonal threaded abrasive flow joint (13) is provided with an abrasive flow inlet, the abrasive flow inlet is connected with an external abrasive flow generating device with an abrasive flow control valve through a pipeline, and the bidirectional hexagonal threaded abrasive flow joint (13) is communicated with a piston cavity on one side, close to a workpiece (3) to be processed, of the right piston pipe (15);
the rotary driving component comprises a bearing sleeve (16), a synchronous belt (1), a rotary driving motor (22), a driven pulley (17) and a driving pulley, wherein the bearing sleeve (16) is arranged on the right piston tube (15) through the bearing sleeve (16), the driven pulley (17) is fixed on the bearing sleeve (16), the rotary driving motor (22) is fixed on a right fixed seat (18), an output shaft of the rotary driving motor (22) is connected with the driving pulley, and the driving pulley is connected with the driven pulley (17) on the bearing sleeve (16) through the synchronous belt (1); when the rotary driving motor (22) moves, a synchronous belt (1) mechanism consisting of a driving belt wheel, a driven belt wheel (17) and a synchronous belt (1) drives a bearing sleeve (16) to rotate on the right piston tube (15);
the magnet assembly comprises at least four strip-shaped permanent magnets (14), all the strip-shaped permanent magnets (14) are horizontally arranged around the workpiece (3) to be processed, one ends of all the strip-shaped permanent magnets (14) are fixed on the bearing sleeve (16), and all the strip-shaped permanent magnets (14) are uniformly distributed on the bearing sleeve (16) along the circumferential direction;
the axial lead of left side two-way connecting seat (11), right side two-way connecting seat (19), left side work piece clamping head (12), right side work piece clamping head (2), left piston pipe (10) and right piston pipe (15) all is located same straight line, left side work piece clamping head (12) and right side work piece clamping head (2) centre gripping respectively are treating both ends about processing work piece (3), treat that the one end of the crooked hole on processing work piece (3) is linked together through left side work piece clamping head (12) and left piston pipe (10), treat that the other end of the crooked hole on processing work piece (3) is linked together through right side work piece clamping head (2) and right piston pipe (15).
2. The apparatus according to claim 1, wherein the polishing apparatus comprises: the left piston tube (10) is connected with the left workpiece clamping head (12) in a sealing mode through a sealing ring, and the right piston tube (15) is connected with the right workpiece clamping head (2) in a sealing mode through a sealing ring.
3. The apparatus according to claim 1, wherein the polishing apparatus comprises: the left bidirectional connecting seat (11) is provided with a left threaded connector and a right threaded connector, one end of the left piston pipe (10) is provided with an internal thread matched with the left threaded connector on the left bidirectional connecting seat (11), and the left piston pipe (10) is matched with the left threaded connector on the left bidirectional connecting seat (11) through the internal thread and is fixedly connected with the left bidirectional connecting seat (11); the right-side bidirectional connecting seat (19) is provided with a left-side threaded connector and a right-side threaded connector, one end of the right piston pipe (15) is provided with an internal thread matched with the left-side threaded connector on the right-side bidirectional connecting seat (19), and the right piston pipe (15) is fixedly connected with the right-side bidirectional connecting seat (19) through the matching of the internal thread and the left-side threaded connector on the right-side bidirectional connecting seat (19).
4. A device for polishing a via hole under varying electric field and rotating magnetic field according to claim 3, wherein: the mounting ends of the left workpiece clamping head (12) and the right workpiece clamping head (2) are designed in a copying manner, different copying ends are designed for different workpieces, and the two ends of the workpiece (3) to be processed are respectively connected with the mounting ends of the left workpiece clamping head (12) and the right workpiece clamping head (2) in a sealing manner.
5. The apparatus according to claim 1, wherein the polishing apparatus comprises: the sleeve on the right rotary pipeline is arranged between the right rotary joint and the right bearing seat; still the cover is equipped with the sleeve on the rotatory pipeline of left side, and the sleeve setting on the rotatory pipeline of left side is between left rotary joint and left side bearing frame.
6. The apparatus according to claim 1, wherein the polishing apparatus comprises: and the mounting ends of the left workpiece clamping head (12) and the right workpiece clamping head (2) are respectively provided with a conductive copper ring (25), and the two conductive copper rings (25) are connected with two output lines of an external square wave alternating current power supply through two wires.
7. The through hole polishing method under the variable electric field and the rotating magnetic field of the through hole polishing device under the variable electric field and the rotating magnetic field according to claim 1, characterized in that: the method specifically comprises the following steps:
the method comprises the following steps: one end of a workpiece (3) to be machined is fixed in a right workpiece clamping head (2), a guide rail driving motor (7) is started, the whole composed of a sliding block and a movable plate (4) of a horizontal linear module (5) is driven to move linearly through a coupler (6), so that a left workpiece clamping head (12) is gradually close to the other end of the workpiece (3) to be machined until the workpiece (3) to be machined is clamped between the left workpiece clamping head (12) and the right workpiece clamping head (2), the two ends of the workpiece (3) to be machined are completely sealed with the left workpiece clamping head (12) and the right workpiece clamping head (2), the guide rail driving motor (7) is stopped at the moment, and the two ends of a bent inner hole in the workpiece (3) to be machined are respectively communicated with the insides of the left workpiece clamping head (12) and the right workpiece clamping head (2);
step two: injecting a liquid metal abrasive particle mixed solution into the whole device through a two-way hexagonal threaded abrasive particle flow joint (13) by utilizing an abrasive particle flow generating device connected with an abrasive particle flow inlet on the two-way hexagonal threaded abrasive particle flow joint (13) through a pipeline until the inside of a bent inner hole on a workpiece (3) to be processed is filled with the liquid metal abrasive particle mixed solution;
step three: respectively connecting inflation ports (32) of a right side inflation piston cover (21) and a left side inflation piston cover (9) with inflation devices with control valves, performing interval air supply on inflation cavities in the right side inflation piston cover (21) and the left side inflation piston cover (9) by controlling the opening and closing of the control valves, closing the control valves connected with the left side inflation piston cover (9) when the control valves connected with the right side inflation piston cover (21) are opened, and closing the control valves connected with the right side inflation piston cover (21) when the control valves connected with the left side inflation piston cover (9) are opened, so that the pistons connected with a left piston rod (8) and a right piston rod (20) are pushed to continuously move left and right, and liquid metal abrasive particle mixed liquid in a bent inner hole on a workpiece (3) to be processed is pushed to reciprocate left and right;
step four: a rotary driving motor (22) is started, the rotary driving motor (22) drives the whole body consisting of the bearing sleeve (16) and the strip-shaped permanent magnet (14) to rotate through a synchronous belt (1) mechanism consisting of a driving belt wheel, a synchronous belt (1) and a driven belt wheel (17), so that a rotary magnetic field is formed at the periphery of the workpiece to be processed (3), liquid metal of a liquid metal abrasive particle mixed liquid in a bent through hole of the workpiece to be processed (3) is driven to rotate, and the abrasive particles are driven to efficiently polish the bent through hole;
step five: after a certain time, the bent inner hole on the workpiece (3) to be machined is machined, the rotary driving motor (22) is turned off, the guide rail driving motor (7) is started to enable the left workpiece clamping head (12) to move back, the workpiece (3) to be machined is taken down, the liquid metal abrasive particle mixed liquid in the whole device is poured out, and the whole bent inner hole polishing process is completed.
8. The apparatus according to claim 7, wherein the polishing apparatus comprises: when waiting to process work piece (3) and making by metal material, open external square wave alternating current power supply, for the copper ring switch-on square wave alternating current on left side work piece holding head (12) and the right side work piece holding head (2), because it is metal material to wait to process work piece (3), make things convenient for the alternating current finally to use in the liquid metal of liquid metal abrasive particle mixed liquid, make liquid metal take place axial fluctuation, further make the abrasive particle in the liquid metal abrasive particle mixed liquid take place axial vibration, the process becomes more unordered when making a round trip to polish the crooked hole on waiting to process work piece (3).
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| CN201910984205.0A CN110605654A (en) | 2019-10-16 | 2019-10-16 | Through hole polishing device and method under variable electric field and rotating magnetic field |
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