Abrasive water jet polishing device based on air source

Abstract

The invention discloses an abrasive water jet polishing device based on an air source, and belongs to the technical field of optical part polishing. In order to solve the problem that a traditional pump power source is prone to abrasion, the air compressor is adopted as the power source, abrasive materials are prevented from flowing through a pump body, and the service life of equipment is prolonged. The device comprises an air compressor, a double-layer abrasive stirring barrel, a three-axis moving portal frame and a nozzle fixing mechanism. The double-layer stirring barrel realizes cyclic utilization of the polishing solution through gravity and pipeline connection, so that material waste is reduced; and the air compressor pressurizes the lower-layer stirring barrel to drive the grinding materials to be sprayed out through the nozzles to finish polishing. The three-axis movable portal frame can accurately control the path of the nozzle, and the diversified polishing effect is achieved by combining the adjustable target distance, pressure and abrasive parameters. And the rack is provided with a warning lamp and a display, so that the operation safety and the regulation and control convenience are improved. The polishing machine has the advantages of being reasonable in structure, low in abrasion, high in efficiency and high in environmental protection performance, and is suitable for polishing machining of precise parts such as optical glass.

Description

Technical Field

[0001] The invention patent relates to a parts polishing equipment, in particular to an optical glass part. Background Art

[0002] With the rapid development of industry, the demand for precision parts in modern industry is increasing, especially in optical instruments such as aerospace. It is difficult for traditional polishing devices to ensure the accuracy of optical glass polishing. Therefore, abrasive water jet polishing plays a vital role. Its advantage is that there is no thermal damage and no adverse effects on the workpiece during the polishing process. In addition, the abrasive particle size in the abrasive water jet is very small, which has the advantage of less scratches compared to traditional grinding wheel polishing.

[0003] However, the existing abrasive water jet polishing device usually uses a pump as a power source, that is, the pump is used to provide pressure to the nozzle so that the abrasive is sprayed onto the optical glass surface at high speed. The disadvantage of using a pump as a power source is that the abrasive will pass through the pump body, and the abrasive will cause wear to the pump over a long period of time. Summary of the invention

[0004] In order to overcome the defects of pump wear and tear in the prior art, the present invention proposes an abrasive water jet polishing device based on an air source. The device uses an air compressor as a power source, and its advantage is that the abrasive does not pass through the power element, and the pressure is injected into the abrasive mixing barrel by the air compressor, and then the abrasive is evenly mixed by the abrasive mixing barrel, and then the abrasive is sprayed out through the nozzle to complete the polishing.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an abrasive water jet polishing device based on an air source, comprising an upper actuator and a lower power source mechanism, wherein the upper and lower mechanisms are separated by a middle working platform. The upper actuator comprises a three-axis mobile gantry and a nozzle fixing device. The working table comprises a workpiece placement slot and a workpiece fixing fixture. The lower power source mechanism comprises an air compressor and a double-layer abrasive mixing barrel. A warning light and a display are fixed on the frame.

[0006] In the above-mentioned abrasive water jet polishing device, the three-axis mobile gantry in the upper actuator is connected to the nozzle fixing device. The nozzle fixing device is a cylindrical pipe-like object with a threaded hole at the bottom for connecting the nozzle, and can be connected to various types of nozzles through an adapter. The three-axis mobile gantry device completes the path movement of the polishing and the alignment with the workpiece.

[0007] In the above-mentioned abrasive water jet polishing device, the workpiece placement groove in the work surface is a square groove embedded in the work surface, in which a workpiece fixture is installed to fix the workpiece to prevent it from being washed away by the jet during the polishing process. A polishing liquid recovery hole is opened at the lower part of the placement groove to realize the recycling of the polishing liquid. The polishing liquid recovery hole is connected to the upper stirring barrel of the double-layer abrasive stirring barrel through a pipeline.

[0008] In the above-mentioned abrasive water jet polishing device, the air compressor in the lower power source mechanism is respectively connected to the upper and lower mixing barrels of the double-layer abrasive mixing barrel. The double-layer abrasive mixing barrel is fixed together by a columnar frame, the upper mixing barrel is connected to the lower mixing barrel by a pipe, and the lower mixing barrel is connected to the nozzle by a pipe.

[0009] In the above-mentioned abrasive water jet polishing device, the warning light in the polishing device frame is placed on the top of the frame to indicate a fault. The display is placed in the square of the frame to operate the three-axis mobile gantry and the start and stop of each mechanism.

[0010] The beneficial effect of the present invention is that the abrasive water jet polishing device based on air source adopts an air compressor as a power element, which ensures the safety of the power source mechanism and effectively solves the wear problem of the traditional pump as a power element. The double-layer abrasive stirring barrel is adopted to realize the recycling of the polishing liquid and improve the utilization rate of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 A schematic diagram of the three-dimensional structure of an abrasive water jet polishing device based on an air source is proposed in the present invention;

[0013] Figure 2 The present invention provides a schematic structural diagram of a three-axis movable gantry and a nozzle fixing device of an abrasive water jet polishing device based on an air source;

[0014] Figure 3 A schematic diagram of the frame structure of an abrasive water jet polishing device based on an air source is proposed in the present invention;

[0015] Figure 4 The present invention provides a structural schematic diagram of a double-layer abrasive stirring barrel of an abrasive water jet polishing device based on an air source.

[0016] Legend: 1. Air compressor; 2. Working platform; 3. Three-axis mobile gantry mechanism; 4. Warning light; 5. Display; 6. Double-layer abrasive mixing barrel; 8. Abrasive mixing barrel fixing frame; 9. Switch valve; 10. Stirring paddle; 11. Stirring motor; 12. Upper mixing barrel; 13. Lower mixing barrel; 14. Observation window; 15 Inspection window; 16. X-axis moving module; 17. Y-axis moving module; 18. Nozzle abrasive pipe; 19. Nozzle; 20. Nozzle connector; 21. Nozzle fixing block; 22. Z-axis moving module. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Embodiment 1

[0020] like Figure 1-4 As shown, the present invention provides an abrasive water jet polishing device based on an air source, comprising an air compressor 1 and a double-layer abrasive stirring barrel 6. The air compressor 1 is connected to the air inlets of the upper stirring barrel 12 and the lower stirring barrel 13 in the double-layer abrasive stirring barrel 6 respectively. The lower stirring barrel 13 is connected to the nozzle abrasive pipeline 18, and the upper stirring barrel 12 is connected to the recovery pipeline of the working platform. The upper stirring barrel 12 is connected to the lower stirring barrel 13 through a pipeline, and the pipeline is provided with a switch valve 9.

[0021] The double-layer abrasive stirring barrel 6 is filled with polishing liquid, and the stirring motor 11 is powered on to drive the stirring paddle 10 to rotate so that the abrasive is fully mixed.

[0022] The evenly mixed polishing liquid is pressurized by the air compressor 1 to the lower stirring barrel 13 , and under the action of the pressure, the polishing liquid is passed from the lower stirring barrel 13 into the nozzle abrasive pipe 18 .

[0023] The nozzle abrasive pipe 18 is connected to the nozzle connector 20, and the nozzle connector 20 is connected to the nozzle 19, and fixed together with the Z-axis moving module 22 through the nozzle fixing block 21. Under the action of pressure, the polishing liquid is sprayed out from the nozzle for polishing. The workpiece is placed on the working platform 2, and the working platform 2 is provided with a polishing liquid recovery pipeline, which is connected to the upper stirring barrel 12 to form a circulating liquid circuit.

[0024] The nozzle 19 mentioned above performs path planning through the three-axis mobile gantry mechanism 3 to achieve polishing of the workpiece surface.

[0025] The warning light 4 can be green or red when polishing is completed or an error occurs during the polishing process, and yellow during the polishing process to remind the staff. The display 5 can control the three-axis mobile gantry mechanism 3 to achieve polishing of different workpieces.

[0026] By adjusting the Z-axis moving module, the target distance between the nozzle and the workpiece can be changed, and different polishing effects can be achieved by adjusting the target distance. By adjusting the pressure provided by the air compressor 1, the pressure at the nozzle inlet can be changed, and different polishing effects can be achieved by adjusting the nozzle inlet pressure. By adjusting the abrasive concentration, abrasive particle diameter and abrasive particle type in the double-layer abrasive mixing barrel 6, different polishing effects can be achieved. By adjusting the moving speed of the X-axis moving module 16 and the Y-axis moving module 17, different polishing effects can be achieved.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An abrasive water jet polishing device based on an air source, comprising an air compressor (1) and a double-layer abrasive stirring barrel (6), wherein the air compressor (1) is connected to the double-layer abrasive stirring barrel (6) through pipelines, and a switch valve is installed on the pipeline to control the introduction of high-pressure gas. Under the action of pressure, the polishing liquid in the lower stirring barrel (13) is sprayed out from the nozzle (19), and the sprayed polishing liquid flows into the upper stirring barrel (12) through the recovery pipeline in the working platform (2), completing the circulation of the liquid circuit, and an alarm light (4) and a display (5) are installed on the frame.

2. The double-layer mixing barrel (6) according to claim 1, characterized in that The upper stirring barrel (12) is placed vertically and is connected to the lower stirring barrel (13) through a pipeline, on which a switch valve (9) is installed, and the polishing liquid in the upper stirring barrel (12) can flow into the lower stirring barrel (13) by gravity.

3. The nozzle (19) according to claim 1 is connected by a nozzle connector (20) and fixed to the Z-axis moving module (22) by a nozzle fixing block (21), characterized in that Polishing to meet different requirements can be achieved by changing the model of the nozzle (19).

4. The working platform (2) according to claim 1, characterized in that The polishing workpiece is fixed therein, and a polishing liquid recovery pipeline is provided on the working platform (2) and connected to the upper stirring barrel (12). A switch valve is installed on the pipeline to control the opening and closing of the recovery pipeline.

5. The double-layer mixing barrel (6) according to claim 1, characterized in that A stirring paddle (10) is installed in the stirring barrel. The stirring paddle (10) is driven by a stirring motor (11). The abrasive is mixed evenly by the rotation of the stirring paddle (10).

6. The frame according to claim 1, characterized in that An alarm light (4) is installed on it to provide an indication signal to the operator, a display (5) provides the operator with the control of the three-axis mobile gantry mechanism (3), an observation window (14) is installed on it to observe the polishing process, and an inspection window (15) is installed at the bottom to inspect and repair the equipment.

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