CN214351758U - Pulse water jet polishing device based on premixed abrasive - Google Patents
Pulse water jet polishing device based on premixed abrasive Download PDFInfo
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- CN214351758U CN214351758U CN202022949317.3U CN202022949317U CN214351758U CN 214351758 U CN214351758 U CN 214351758U CN 202022949317 U CN202022949317 U CN 202022949317U CN 214351758 U CN214351758 U CN 214351758U
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Abstract
The utility model discloses a pulse water jet polishing device based on premixed abrasives, which comprises an abrasive stirring unit, a moving workbench, a liquid supply unit, a polishing liquid backflow unit and a pulse injection unit, wherein the abrasive stirring unit comprises a stirrer, a stirring motor and a stirrer controller, and the liquid supply unit comprises a liquid supply pump, a liquid supply motor and a liquid storage device; the pulse injection unit comprises a nozzle, a pulse device, a pulse control motor and a pulse controller; the nozzle is used for jetting a jet water column; the state of the motor and the motion of the motion workbench are controlled by controlling the stirring motor, the liquid supply motor and the pulse control motor, and the contact pressure of the jet water column and the surface of the workpiece is adjusted by the pressure controller, so that the contact pressure and the speed of the jet water column and the surface of the workpiece are changed in a transient state, and the contact state of the jet water column and the surface of the workpiece is changed. The utility model discloses make efflux water column and workpiece surface realize the intermittent pulse contact, realize steerable intermittent abrasive material water jet, ensure that the polishing solution contact process is real-time controllable.
Description
Technical Field
The utility model relates to a polishing system especially relates to a premix abrasive water jet burnishing device.
Background
With the development of science and technology, the free-form surface gradually fills the lives of people, namely automobile lamps, glasses and lenses, and military equipment, and is widely applied to the fields of civil life, aerospace, national defense science and technology and the like. The traditional free-form surface processing mode comprises the following steps: ultra-precision turning, milling, grinding and the like, however, the free-form surface is often difficult to express through an accurate mathematical equation due to high precision requirements, which brings serious challenges to the traditional processing mode. In addition, the inevitable tool mark track of the traditional processing mode causes that the high-precision free-form surface needs to be processed by polishing.
The abrasive water jet technology is developed from a pure water jet technology, and is gradually applied to the field of precision polishing after being applied to water cutting, rock breaking and the like. The abrasive water jet technology is suitable for various free-form surfaces due to the super-strong processing flexibility, and the surface of a workpiece is continuously impacted and cut by micro abrasive particles in the processing process, so that almost no heat is generated, and almost no damage is caused. However, the traditional abrasive water jet technology has small removal rate of surface materials, and the main mode for improving the removal rate of the materials depends on the increase of jet pressure and the increase of abrasive particle size. Along with the increase of pressure or particle size, the wearing and tearing of efflux pipeline, booster pump, control valve are also aggravated thereupon, show to promote the processing cost.
The pulse water jet method can realize the action duration of the jet water column on the shock wave of the surface of the workpiece by controlling the contact state of the jet water column and the surface of the workpiece, and improve the contact speed of the abrasive and the surface of the workpiece, thereby realizing the purpose of efficient removal. The main control parameters for pulsed water jets include the pulse frequency and the ratio of process to pause duration. The pulse frequency can be divided into a fixed frequency and a variable frequency, the fixed frequency means that the impact frequency does not change along with time, and similarly, the variable frequency can be regarded as that the impact frequency changes along with the processing time. As the pulse frequency increases, the number of jet impacts per unit time increases. The proportion of the processing time length to the intermittent time length refers to the proportion of the processing time length to the intermittent time length, and as the intermittent time length is shortened, the actual processing time length in unit time is increased, which is also beneficial to improving the processing efficiency.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned prior art, the utility model provides a pulse water jet burnishing device based on mix abrasive material in advance takes to utilize pulse injection apparatus to cut the efflux water column, realizes steerable intermittent abrasive material water jet to ensure that the polishing solution contact process is real-time controllable.
In order to solve the technical problem, the utility model provides a pulse water jet polishing device based on premix abrasive material, including abrasive material stirring unit, motion workstation, liquid supply unit and polishing solution backward flow unit, abrasive material stirring unit includes agitator, agitator motor and agitator controller, the liquid supply unit includes liquid supply pump, liquid supply motor and reservoir; the pulse water jet polishing device also comprises a pulse jet unit, wherein the pulse jet unit comprises a nozzle, a pulse device, a pulse control motor and a pulse controller; a liquid inlet is arranged between the liquid storage device and the nozzle; the stirrer controller controls the state of the stirring motor, the pressure controller is used for controlling the state of the liquid supply motor, and the pulse controller controls the state of the pulse control motor; the nozzle is used for spraying jet water column, jet water column is formed by supplying the abrasive material in advance that the liquid unit provided, through the motion of motion workstation to realize the position of the relative jet water column of work piece, pulse controller is through control the pulse control motor realizes the position of the relative jet water column of pulse unit.
Further, pulse water jet burnishing device, wherein, pressure controller is through control the liquid supply motor realizes the injection pressure of the efflux water column that the nozzle sprays.
The polishing solution backflow unit comprises a water tank and a water tank.
Compared with the prior art, the beneficial effects of the utility model are that:
abrasive water jets have become one of the most promising polishing methods in the field of precision polishing. The traditional abrasive water jet method meets the requirements of precision and efficiency in the manufacturing process mainly by adjusting parameters such as liquid supply pressure, abrasive concentration, nozzle height and the like. Adopt the utility model provides a polish based on mix abrasive material pulse water jet burnishing device in advance mainly changes efflux water column and work piece contact mode through control pulse device for the efflux water column constantly strikes the work piece surface with the form of pulse, with precision and efficiency requirement in satisfying the manufacturing process. Use the utility model discloses polishing method's that burnishing device realized main characteristics lie in that low cost, easy control, the shock wave that the pulse produced are favorable to further improving abrasive water jet machining efficiency.
Drawings
FIG. 1 is a schematic diagram of the construction of a pre-mixed abrasive based pulse water jet polishing device of the present invention;
2-1 to 2-4 are schematic diagrams of the pulse jet process in the pulse water jet polishing process of the present invention;
fig. 3 is a schematic structural diagram of an example of the pulse device of the present invention.
In the figure:
1-stirrer 2-stirring motor 3-liquid supply motor 4-liquid supply pump
5-water tank 6-workpiece 7-pulse device 8-nozzle
9-reservoir 10-pulse control motor 11-motion workbench 12-stirrer controller
13-pressure controller 14-pulse controller 15-liquid inlet 16-jet water column
17-rotating disc
Detailed Description
The present invention will be further described with reference to the following drawings and specific examples, but the following examples are by no means limiting the present invention.
The design idea of the utility model is that: abrasive water jets have become one of the most promising polishing methods in the field of precision polishing. The traditional abrasive water jet method meets the requirements of precision and efficiency in the manufacturing process mainly by adjusting parameters such as liquid supply pressure, abrasive concentration, nozzle height and the like. The utility model provides a change efflux water column and work piece contact mode through control pulse device when polishing processing based on mix abrasive material pulse water jet burnishing device in advance for the efflux water column constantly strikes the workpiece surface with the form of pulse, with precision and efficiency requirement in satisfying the manufacturing process, is favorable to further improving abrasive material water jet machining efficiency.
The utility model provides a pulse water jet burnishing device based on mix abrasive material in advance, as shown in fig. 1, this pulse water jet burnishing device includes abrasive material stirring unit, motion workstation 11, supplies liquid unit, pulse injection unit and polishing solution backward flow unit.
The abrasive material stirring unit comprises a stirrer 1, a stirring motor 2 and a stirrer controller 12; the liquid supply unit comprises a liquid supply pump 4, a liquid supply motor 3 and a liquid storage device 9; the pulse spraying unit comprises a nozzle 8, a pulse device 7, a pulse control motor 10 and a pulse controller 14; the polishing solution backflow unit includes a water tank 5 and a water tank.
Reservoir 9 with be equipped with inlet 15 between the nozzle 8, nozzle 8 is used for jetting efflux water column 16, efflux water column 16 is formed by the abrasive material in advance that supplies that the liquid unit provided.
The stirrer controller 12 controls the state of the stirring motor 2, the pressure controller 13 is used for controlling the state of the liquid supply motor 3, and the pressure controller 13 controls the liquid supply motor 3 to realize the injection pressure of the jet water column 16 injected by the nozzle 8; the pulse controller 14 controls the state of the pulse-controlled motor 10. Through the motion of motion workstation 11 to realize the position of work piece 6 relative efflux water column 16, pulse controller 14 is through control pulse control motor 10 realizes the position of pulser 7 relative efflux water column 16.
Because, can form the shock wave in the twinkling of an eye at efflux water column 16 and workpiece surface contact, the shock wave can influence the speed and the pressure distribution of contact surface, the utility model discloses a pulse water jet burnishing device mainly can control the release of shock wave through real time control efflux water column 16 and workpiece surface contact state (for example, control efflux water column 16 and workpiece 6 are not contacted completely for a long time of complete contact) to the realization is to the control of contact surface speed and pressure.
The method for realizing the pulse water jet polishing by utilizing the pulse water jet polishing device comprises the following steps: the pulse controller 14 adjusts the movement speed of the pulse device 7 and the position of the pulse device 7 relative to the jet water column 16 through the pulse control motor 10, and adjusts the contact pressure of the jet water column 16 and the surface of the workpiece 6 through the pressure controller 13. The contact form (namely the contact area) of the jet water column and the workpiece is continuously changed by controlling the position of the pulse device relative to the jet water column, so that the contact pressure and the speed of the jet water column 16 and the surface of the workpiece are subjected to transient change, and the contact state of the jet water column 16 and the surface of the workpiece is changed.
The specific process of the pulse water jet polishing is as follows: firstly, a workpiece 6 is fixed on a moving workbench 11, and during machining, the liquid inlet 15 provides polishing liquid, and jet water columns 16 are sprayed through the nozzles 8 to implement jet.
The position of the pulse device 7 relative to the jet water column 16 is then controlled by the pulse controller 14, and when the pulse device 7 is moved away from the jet water column 16, the jet water column 16 completely impinges directly on the surface of the workpiece 6. As the position of the pulsing device 7 relative to the jet water column 16 changes, as shown in fig. 2-1, 2-2, 2-3 and 2-4, gradually approaches and partially cuts (fig. 2-1 and 2-2) → completely cuts (fig. 2-3) → partially cuts and gradually detaches (fig. 2-4) → detaches; in the position change process, the actual contact mode of the jet water column 16 and the surface of the workpiece changes, and the jet water column is completely separated from the workpiece 6 along with the further movement of the pulse device 7. The actual contact variation of the jet water column 16 with the surface of the workpiece 6 is as follows: part of the jet water column 16 is blocked → the jet water column 16 is completely separated from the workpiece 6 → part of the jet water column 16 is blocked → the jet water column 16 is gradually contacted with the surface of the workpiece 6, i.e. the contact surface of the jet water column 16 and the surface of the workpiece 6 is gradually increased, so that shock waves are formed and released at high speed, the movement speed of the abrasive in the polishing solution is increased, and the removal rate of the surface material of the workpiece is increased.
The utility model discloses in, the pulser is relative the position change process of efflux water column 16 is according to being close to gradually and partial cutting → complete cutting → partial cutting and break away from gradually → break away from the circulation repetitive motion for the intermittent pulse contact is realized on the surface of efflux water column 16 and work piece 6.
As shown in fig. 3, taking a turntable 17 as an example of the pulse device, a plurality of circular holes are formed on one concentric circle of the turntable 17, and the turntable 17 is driven to rotate by a rotating motor (i.e., the pulse control motor 10). When the nozzle 8 is aligned with a round hole on the turntable 17, the jet water column passes through the round hole to directly contact with the workpiece, and when the nozzle 8 is aligned with the entity of the turntable 17, the jet water column impacts the barrier separated by the entity part of the turntable, so that the contact between the jet water column and the workpiece is blocked. As the turntable 17 rotates, the jet water column makes intermittent contact with the workpiece surface. The pulsed water jet of the present embodiment is different from a conventional abrasive water jet in that the contact pressure and the contact speed of the jet water column with the surface of the workpiece gradually tend to be stable over time. And the utility model discloses the pulse water jet that can adopt makes the efflux water column constantly cut off, and efflux water column and workpiece surface contact pressure and speed take place transient variation. Therefore, the cutting speed of the abrasive and the workpiece is increased, and the removal efficiency of the surface material of the workpiece is improved.
When the circular holes on the turntable 17 are uniformly arranged, and simultaneously, when the rotating motor rotates at a constant speed, the jet water columns are periodically contacted and separated with the surface of the workpiece. Compared with the traditional abrasive water jet technology, the contact time of the jet water column and the surface of the workpiece is shortened on the whole, but the speed of the abrasive and the surface of the workpiece is remarkably increased due to transient diffusion of shock waves and accurate control of a rotating motor. However, the relative movement speed of the abrasive and the workpiece surface is a significant factor influencing the removal rate of the material surface, and therefore, the pulse water jet technology is an effective way to improve the processing efficiency of the abrasive water jet. Meanwhile, the contact state of the jet flow water column and the surface of the workpiece can be changed by adjusting the rotating speed of the rotating motor, the aperture of the round hole on the turntable 17 and the indexing angle (namely the distance between two adjacent round holes) of the round holes, so that good workpiece surface material removing efficiency and precision can be obtained.
Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit of the present invention.
Claims (3)
1. A pulse water jet polishing device based on premixed abrasives comprises an abrasive stirring unit, a moving workbench (11), a liquid supply unit and a polishing liquid backflow unit, wherein the abrasive stirring unit comprises a stirrer (1), a stirring motor (2) and a stirrer controller (12), and the liquid supply unit comprises a liquid supply pump (4), a liquid supply motor (3) and a liquid storage device (9); it is characterized in that the preparation method is characterized in that,
the pulse water jet polishing device also comprises a pulse jet unit, wherein the pulse jet unit comprises a nozzle (8), a pulse device (7), a pulse control motor (10) and a pulse controller (14); a liquid inlet (15) is arranged between the liquid storage device (9) and the nozzle (8);
the stirrer controller (12) controls the state of the stirring motor (2), the pressure controller (13) is used for controlling the state of the liquid supply motor (3), and the pulse controller (14) is used for controlling the state of the pulse control motor (10);
nozzle (8) are used for jetting efflux water column (16), efflux water column (16) are formed by the premix abrasive that the confession liquid unit provided, through the motion of motion workstation (11) to realize the position of the relative efflux water column of work piece (16), pulse controller (14) are through control pulse control motor (10) realize the position of pulser (7) relative efflux water column (16).
2. The pulse water jet polishing device according to claim 1, wherein the pressure controller (13) implements the ejection pressure of the jet water column (16) ejected from the nozzle (8) by controlling the liquid supply motor (3).
3. The pulsed water jet polishing device according to claim 1 or 2, wherein the polishing liquid reflux unit comprises a water tank (5) and a water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022949317.3U CN214351758U (en) | 2020-12-08 | 2020-12-08 | Pulse water jet polishing device based on premixed abrasive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022949317.3U CN214351758U (en) | 2020-12-08 | 2020-12-08 | Pulse water jet polishing device based on premixed abrasive |
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| Publication Number | Publication Date |
|---|---|
| CN214351758U true CN214351758U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022949317.3U Active CN214351758U (en) | 2020-12-08 | 2020-12-08 | Pulse water jet polishing device based on premixed abrasive |
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| CN (1) | CN214351758U (en) |
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- 2020-12-08 CN CN202022949317.3U patent/CN214351758U/en active Active
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