CN110125787B - Centrifugal nano collagen micro inner hole surface polishing device and method - Google Patents
Centrifugal nano collagen micro inner hole surface polishing device and method Download PDFInfo
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- CN110125787B CN110125787B CN201910347496.2A CN201910347496A CN110125787B CN 110125787 B CN110125787 B CN 110125787B CN 201910347496 A CN201910347496 A CN 201910347496A CN 110125787 B CN110125787 B CN 110125787B
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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
- B24B31/006—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 for grinding the interior surfaces of hollow workpieces
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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
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
Abstract
The invention discloses a centrifugal nanometer collagen body microinner hole surface polishing device and a method, wherein nanometer collagen body polishing solution is injected into a liquid storage tank, the center of the bottom of the liquid storage tank is an upward bulge and is fixedly connected with a vertically arranged direct current motor, an output shaft of the direct current motor is connected with the middle of the bottom of a centrifugal disc through a coupling, and the centrifugal disc is injected with the nanometer collagen body polishing solution; 3-8 internal thread pipelines which extend downwards are uniformly distributed on the side wall of the centrifugal disc, the internal thread pipelines are coaxially and concentrically connected with the inner end of the nozzle, a nozzle outer sleeve is coaxially and concentrically tightly sleeved outside the nozzle, the outer end of the nozzle outer sleeve is fixedly connected with the inner end of a cylindrical workpiece outer sleeve, a workpiece is sleeved in the workpiece outer sleeve, and a through micro inner hole is formed in the center of the workpiece; the nano collagen is thrown into and washed by the centrifugal force generated by the high-speed rotation of the centrifugal disc driven by the direct current motor and passes through the micropores, so that the nano collagen can obtain high acceleration energy under the action of the centrifugal force, and the polishing quality of the surface of the microinner hole of the workpiece is improved.
Description
Technical Field
The invention belongs to the field of metal surface processing, and particularly relates to a device and a method for polishing the surface of a microhole, in particular to polishing the microhole with the diameter less than 1 mm.
Background
The micropores exist in a large amount in a mechanical structure, are generally used for occasions such as connection, conduction and the like, and are widely applied to industries such as aerospace, military industry, mechanical automation, chemical fibers, photoelectric instruments and meters, daily use and the like and some advanced products. The existing micropore machining field has various micropore machining methods, such as mechanical drilling, electric spark machining, laser micropore machining, plunge milling and the like, but most of the methods have respective defects, for example, mechanical drilling can cause burrs at a micropore outlet to influence assembly and use, and laser and electric spark machining can change the surface property of the micropore due to the characteristics of the machining principle, generate a recast layer and influence the use effect and the service life of the micropore; meanwhile, the methods cannot ensure high precision, so the method is only suitable for early-stage processing and is not suitable for high-precision micropore processing.
With the continuous development of Abrasive flow machining technology, Abrasive Flow Machining (AFM) technology is gradually becoming a latest machining method, which is a method of flowing an Abrasive medium (a flowable mixture doped with Abrasive particles) under pressure over a surface of a workpiece to be machined to remove burrs, fins and round corners, thereby reducing waviness and roughness of the surface of the workpiece and achieving a finish of precision machining. Due to its high adaptability (being able to process holes of different sizes, small holes as small as 0.2mm, spline channels as large as 50mm in diameter), abrasive flow processing methods are increasingly gaining importance in the field of micro-hole processing. However, the current micropore machining device for abrasive flow has limited machining efficiency, only adopts a simple pressurizing cylinder or a pressurizing cylinder to pressurize the abrasive flow, so that the abrasive flow cuts the micropore surface of a workpiece, and realizes micropore precision machining, the mode only depends on the pressurizing cylinder to give impact cutting energy to the abrasive flow, the abrasive flow always loses half of the flow energy of the abrasive flow under the action of flow resistance in a pipeline when the abrasive flow flows to the micropore of the workpiece, so that the impact and cutting energy is too low, the micropore machining efficiency is poor, especially for slender micropores, the abrasive flow basically loses the impact cutting energy for the micropore of the rear half section, the surface quality of the rear half section of the micropore is poor, the requirement for micropore high-precision machining cannot be met, and therefore, how to provide a high-performance and high-efficiency, the abrasive flow micropore machining device capable of applying extra vibration energy to the abrasive flow plays an extremely important role in machining the slender holes, and can realize the development of micropore machining.
Disclosure of Invention
Based on the technical problems, the invention aims to provide a high-performance and high-efficiency centrifugal nano collagen micro inner hole surface polishing device and a polishing method thereof, which are driven by a motor and realize automatic control.
In order to achieve the purpose, the centrifugal nano collagen micro inner hole surface polishing device adopts the technical scheme that: the centrifugal disc is provided with a liquid storage tank, nano collagen polishing liquid is filled in the liquid storage tank, an output port is formed in the side wall of the liquid storage tank, the output port of the liquid storage tank is connected with the top of the centrifugal disc through a circulating pump, an upward bulge is formed in the center of the bottom of the liquid storage tank and fixedly connected with a vertically arranged direct current motor, an output shaft of the direct current motor is connected with the middle of the bottom of the centrifugal disc through a coupling, and the nano collagen polishing liquid is filled in the centrifugal disc; the side wall of the centrifugal disc is uniformly provided with 3-8 internal thread pipelines which extend downwards, the internal thread pipelines are coaxially and concentrically connected with the inner end of a nozzle, the outer part of the nozzle is coaxially and concentrically and tightly sleeved with a nozzle outer sleeve, the outer end of the nozzle outer sleeve is fixedly connected with the inner end of a cylindrical workpiece outer sleeve, a workpiece is sleeved in the workpiece outer sleeve, the center of the workpiece is provided with a through micro inner hole, the outer end of the workpiece outer sleeve is the bottom of a cylinder, and the center of the bottom of the workpiece outer sleeve is provided with a through.
The polishing method of the centrifugal nano collagen microinner hole surface polishing device adopts the technical scheme that the polishing method comprises the following steps:
step A: the controller controls the circulation pump to be started, and the nano collagen polishing solution in the liquid storage tank is pumped into the centrifugal disc;
and B: the controller controls the direct current motor to be started, the centrifugal disc rotates, the workpiece rotates, and the nano collagen polishing solution enters the microinner hole of the workpiece under the action of centrifugal force, polishes the microinner hole and flows into the liquid storage tank;
and C: and after polishing is finished, closing the circulating pump and the direct current motor, and taking out the workpiece.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. the invention takes the nanometer collagen as the abrasive particles, the centrifugal disc is driven by the direct current motor to rotate at high speed to generate centrifugal force, the nanometer collagen is thrown into and washed and passes through the micropores, and under the action of the centrifugal force, the nanometer collagen can obtain high acceleration energy, so that the nanometer collagen can gather higher impact cutting energy to enter the workpiece, and the polishing quality of the surface of the microinner hole of the workpiece is improved.
2. The device of the invention is additionally provided with the nozzle between the centrifugal disc and the workpiece, so that the nano collagen body obtains higher initial speed before entering the micro inner hole of the workpiece.
3. The device also has the functions of centering clamping and nano collagen circulation, realizes the automatic centering clamping of the workpiece and the automatic circulation of the nano collagen respectively, realizes the efficiency improvement and the cost saving, and protects the environment at the same time.
4. The device adopts a centrifugal structural design, has simple structure and low energy consumption, can obtain a high-quality ultra-smooth surface and simultaneously improve the polishing efficiency, and can control the polishing rate by adjusting the rotating speed of the motor.
5. The centrifugal part in the device is of an assembled structure, and is simple and convenient to disassemble, maintain and clean.
6. The centrifugal disc station in the inventive apparatus can be customized according to the requirements of the working conditions, thereby maximizing the polishing efficiency.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
fig. 1 is a schematic structural diagram of a centrifugal nano collagen microinner hole surface polishing device of the invention:
in the figure: 1. a stirring tank; 2. a stirring paddle; 3. a raw material tank; 4. a controller; 6. a centrifugal pan; 7. a centrifugal pan level sensor; 8. a nozzle; 9. a nozzle jacket; 10. coating the workpiece; 11. a circulation pump; 12. a reservoir level sensor; 13. a workpiece; 14. a seal ring; 15. a coupling; 16. a direct current motor; 17. a liquid storage tank; 19. a material guide pump; 20. and (4) a valve.
Detailed Description
Referring to fig. 1, the centrifugal polishing device for the surface of the nanometer collagen microinner hole, provided by the invention, comprises a liquid storage tank 17, wherein an input port and an output port are formed in the side wall of the liquid storage tank 17, the input port of the liquid storage tank 17 is connected with the output port of a stirring tank 1 through a material guide pump 19, the stirring tank 1 is placed beside the liquid storage tank 17, nanometer collagen polishing liquid is injected into the stirring tank 1, and the nanometer collagen polishing liquid is pumped into the liquid storage tank 17 through the material guide pump 19. The output port of the liquid storage tank 17 is connected with the top of the centrifugal disc 6 through the circulating pump 12, the centrifugal disc 6 is arranged right above the inside of the liquid storage tank 17, and the liquid storage tank 17 pumps the nano collagen polishing solution out through the circulating pump 12 and sends the nano collagen polishing solution into the centrifugal disc 6. The circulating pump 12 is connected with the controller 4 through a control line, and the start and stop of the circulating pump are controlled by the controller 4.
The nano collagen polishing solution in the stirring tank 1 is prepared from SiO with the concentration of 90 percent2The solution and water are mixed according to the mass ratio of 1: 1. SiO 90% concentration2The solution and the water are respectively placed in two different raw material tanks 3, the liquid outflow of the raw material tanks 3 is controlled by a bottom valve 20, the two raw materials flow into a stirring tank 1 according to the mass ratio of 1:1, stirring paddles 2 are arranged in the stirring tank 1, the rotating speed of the stirring paddles 2 is 100 r/min, the stirring paddles 2 rotate, the two raw materials are uniformly mixed, and the particle size of the nano collagen polishing solution is 10 nm.
The stirring paddle 2 and the material guide pump 19 are both connected with the controller 4 through respective control lines, the controller 4 controls the start and stop of the stirring paddle 2, and the material guide pump 19 is controlled to pump the prepared nano collagen polishing solution into the liquid storage tank 17.
The center of the bottom of the liquid storage tank 17 is provided with an upward convex boss, a direct current motor 16 is arranged in the middle of the boss, the direct current motor 16 is vertically arranged, the bottom of a shell of the direct current motor is vertically fixed on the central boss of the liquid storage tank 17 through bolts, an output shaft of the direct current motor is vertically and upwards coaxially connected with the lower end of a coupler 15, the upper end of the coupler 15 is coaxially and concentrically connected with the middle of the bottom of the centrifugal disc 6, and therefore the direct current motor 16 is connected with the middle of the bottom of the centrifugal disc 6 through the coupler 15 to drive the. The default rotating speed of the direct current motor 16 is 200r/min, the rotating speed can be adjusted according to actual needs, and meanwhile, the rotating direction and time can be set. The direct current motor 16 is connected with the controller 4 through a control line, and the start and stop of the direct current motor are controlled by the controller 4.
The lateral wall equipartition of centrifugal dish 6 ~ 8 downward sloping extension internal thread pipeline, processing external screw thread on the inner feed liquor end of nozzle 8, centrifugal dish 6 passes through the inner feed liquor end of internal thread pipeline connection nozzle 8, and the center pin of nozzle 8 and the center pin collineation of internal thread pipeline.
A nozzle jacket 9 is coaxially and tightly sleeved on the outside of the nozzle 8, and the outer end of the nozzle jacket 9 and the inner end of a workpiece jacket 10 are fixed together through bolts. The workpiece outer sleeve 10 is cylindrical, the inner end of the workpiece outer sleeve is an opening, the outer end of the workpiece outer sleeve is a cylindrical bottom, the workpiece 13 is sleeved in the workpiece outer sleeve 10, the inner diameter of the workpiece outer sleeve 10 is the same as the outer diameter of the workpiece 13, the axial length of the workpiece outer sleeve 10 is the same as the axial length of the workpiece 13, and the workpiece 13 is guaranteed to be clamped by the workpiece outer sleeve 10 in the radial direction and the axial direction all the time.
The center of the workpiece 13 is provided with a through microinner hole, the center of the bottom of the cylinder at the outer end of the workpiece outer sleeve 10 is provided with a through hole with the diameter larger than the microinner hole, and the through hole is communicated with the liquid storage tank 17 to ensure the outflow of the polishing liquid.
The central axes of the through holes at the outer ends of the workpiece 13, the micro inner hole, the workpiece outer sleeve 10, the nozzle outer sleeve 9, the nozzle 8 and the workpiece outer sleeve 10 are collinear, and the central axes are inclined downwards.
The quantity of 3-8 stations and the inclination angle of the centrifugal disc 6 can be set according to the requirement, and the inclination angle of the common central shaft of the workpiece 13, the nozzle 8 and the like in the centrifugal disc is 10-15 degrees.
A centrifugal disc liquid level sensor 7 is arranged on the inner wall of the centrifugal disc 6 and used for detecting the liquid level of the nano collagen polishing solution in the centrifugal disc 6. The liquid level sensor 12 of the liquid storage tank is arranged on the inner wall of the liquid storage tank 17 and is used for detecting the liquid level of the nano collagen polishing liquid in the liquid storage tank 17. The centrifugal disc liquid level sensor 7 and the liquid storage tank liquid level sensor 12 are both connected with the controller 4 through signal lines, and the detected liquid level value is transmitted to the controller 4.
And a sealing ring 14 is embedded on the connecting surface of the connecting part of the nozzle 8 and the workpiece outer sleeve 10 to ensure sealing.
When the centrifugal nano collagen micro inner hole surface polishing device works, a workpiece 13 is placed in a workpiece outer sleeve 10, a micro inner hole of a workpiece II 13 on the inner end opening side of the workpiece outer sleeve 10 is aligned to the center of the outer end output end of a nozzle II 8, and bolts of the workpiece outer sleeve 10 and the nozzle outer sleeve 9 are screwed down. Then, the valves 20 of the two raw material tanks 3 are opened to flow the raw materials into the agitation tank 1. The controller 4 sends a signal, the stirring paddle 2 is started, and the stirring paddle 2 stirs the raw materials. After the stirring, the controller 4 controls the material-guiding pump 19 to be started, and the nano collagen polishing solution is pumped into the liquid storage tank 17. When the liquid level in the liquid storage tank 17 rises to the height of the liquid storage tank liquid level sensor 12, the liquid storage tank liquid level sensor 12 transmits a signal to the controller 4, and the controller 4 turns off the guide pump 19. Meanwhile, the controller 4 controls the circulating pump 11 to be started, the nano collagen polishing solution is pumped into the centrifugal disc 6, and when the liquid level in the centrifugal disc 6 is higher than the centrifugal disc liquid level sensor 7 on the inner wall of the centrifugal disc 6, the controller 4 controls the circulating pump 11 to be closed, so that the automatic circulation of the nano collagen is realized.
The controller 4 turns on the direct current motor 16, the centrifugal disc 6 rotates, and polishing starts. When the centrifugal disc 6 rotates, the workpiece 13 rotates along with the centrifugal disc 6, and the nano collagen polishing solution in the centrifugal disc 6 flows in from the liquid inlet end at the inner end of the nozzle 8 under the action of centrifugal force, enters the microinner hole of the workpiece 13, flows out from the microinner hole of the workpiece 13, and then flows into the liquid storage tank 17. The nano collagen polishing solution passes through the microholes under the action of centrifugal force, is washed and passes through the microholes, and thus the polishing effect is achieved.
After polishing, the controller 4 sends a signal to turn off the circulating pump 11 and the direct current motor 16, and after the centrifugal disc 6 completely stops rotating, the bolts of the workpiece outer sleeve 10 and the nozzle outer sleeve 9 are unscrewed, and the workpiece 13 is taken out.
Claims (8)
1. The utility model provides a little hole surface finish device of centrifugal nanometer collagen body, has a reservoir (17), and nanometer collagen body polishing solution is filled in reservoir (17), and it has the delivery outlet to open on the lateral wall of reservoir (17), characterized by: the output port of the liquid storage tank (17) is connected with the top of the centrifugal disc (6) through a circulating pump (11), the center of the bottom of the liquid storage tank (17) is an upward bulge and is fixedly connected with a vertically arranged direct current motor (16), an output shaft of the direct current motor (16) is connected with the middle of the bottom of the centrifugal disc (6) through a coupling (15), and the centrifugal disc (6) is filled with nano collagen polishing liquid; the side wall equipartition of centrifugal disc (6) is 3 ~ 8 internal thread pipelines that the downward sloping extends, the inner of nozzle (8) is connected with the same axle heart to the internal thread pipeline, outside coaxial heart of nozzle (8) closely overlaps has nozzle overcoat (9), the outer end of nozzle overcoat (9) and the inner fixed connection of cylindric work piece overcoat (10), work piece overcoat (10) endotheca has work piece (13), open at the center of work piece (13) has the little hole that link up, the outer end of work piece overcoat (10) is that drum bottom and bottom center open has a diameter to be greater than the through-hole of little hole.
2. The device for polishing the surface of the centrifugal nano collagen microhole as claimed in claim 1, wherein: an input port is formed in the side wall of the liquid storage tank (17), the input port is connected with an output port of the stirring tank (1) through a material guide pump (19), nano collagen polishing liquid is injected into the stirring tank (1), a stirring paddle (2) is arranged in the stirring tank (1), and the stirring tank (1) pumps the nano collagen polishing liquid into the liquid storage tank (17) through the material guide pump (19).
3. The device for polishing the surface of the centrifugal nano collagen microhole as claimed in claim 1, wherein: the nano collagen polishing solution is prepared from SiO with the concentration of 90 percent2The solution and water are mixed according to the mass ratio of 1: 1.
4. The device for polishing the surface of the centrifugal nano collagen microhole as claimed in claim 1, wherein: the inner diameter of the workpiece outer sleeve (10) is the same as the outer diameter of the workpiece (13), and the axial length of the workpiece outer sleeve (10) is the same as the axial length of the workpiece (13).
5. The device for polishing the surface of the centrifugal nano collagen microhole as claimed in claim 1, wherein: the central axes of the workpiece (13), the micro inner hole on the workpiece (13), the workpiece outer sleeve (10), the nozzle outer sleeve (9), the nozzle (8) and the through hole on the bottom of the cylinder at the outer end of the workpiece outer sleeve (10) are collinear.
6. The device for polishing the surface of the centrifugal nano collagen microhole as claimed in claim 1, wherein: the centrifugal disc liquid level sensor (7) is arranged on the inner wall of the centrifugal disc (6), the liquid storage tank liquid level sensor (12) is arranged on the inner wall of the liquid storage tank (17), and the centrifugal disc liquid level sensor (7) and the liquid storage tank liquid level sensor (12) are both connected with the controller (4) through signal lines.
7. The device for polishing the surface of the centrifugal nano collagen microhole as claimed in claim 1, wherein: a sealing ring (14) is embedded on the connecting surface of the nozzle (8) and the workpiece outer sleeve (10).
8. A polishing method of the centrifugal nanoskin collagen microhole surface polishing device according to claim 1, comprising the steps of:
step A: the controller (4) controls the circulation pump (11) to be started, and the nano collagen polishing solution in the liquid storage tank (17) is pumped into the centrifugal disc (6);
and B: the controller (4) controls the direct current motor (16) to be started, the centrifugal disc (6) rotates, the workpiece (13) rotates, and the nano collagen polishing solution enters the microinner hole of the workpiece (13) under the action of centrifugal force, polishes the microinner hole and flows into the liquid storage tank (17);
and C: and after polishing is finished, the circulating pump (11) and the direct current motor (16) are closed, and the workpiece (13) is taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910347496.2A CN110125787B (en) | 2019-04-28 | 2019-04-28 | Centrifugal nano collagen micro inner hole surface polishing device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347496.2A CN110125787B (en) | 2019-04-28 | 2019-04-28 | Centrifugal nano collagen micro inner hole surface polishing device and method |
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| CN110125787A CN110125787A (en) | 2019-08-16 |
| CN110125787B true CN110125787B (en) | 2020-12-18 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0244764B1 (en) * | 1986-05-05 | 1993-07-07 | Roberto Polenghi | Method and device for feeding a cleaning solution with suspended abrasive substances, into work-piece finishing machine |
| CN105817990B (en) * | 2016-03-30 | 2017-10-10 | 张家界绿源文化发展有限责任公司 | A kind of moire stone stone carving hollow out burnishing device and its method |
| CN105881185B (en) * | 2016-04-08 | 2018-04-17 | 广东工业大学 | A kind of supercharging high speed abrasive particle magnetic current internal surface of hole polishing method and device certainly |
| CN109590891B (en) * | 2018-12-28 | 2023-09-26 | 浙江工业大学 | Efficient centrifugal pump volute polishing device |
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