Eccentric adjustable jet-assisted water bag polishing device

Abstract

This invention relates to the field of polishing technology, specifically to an eccentric adjustable jet-assisted water bag polishing device. An eccentric adjustment component is provided above the cavity. The eccentric adjustment component includes an adjustment tube and an adjustment plate on the adjustment tube. The adjustment tube is connected to the cavity, and the adjustment plate can slide radially relative to the cavity. Two connecting ears are symmetrically provided on the adjustment plate, and adjusting bolts are threaded onto the two connecting ears, allowing the two adjusting bolts to abut tightly against the outer periphery of the cavity. A hydraulic chuck is provided on the outer periphery of the adjustment tube, and a rotary joint is connected above the adjustment tube. A driven gear is provided on the outer periphery of the rotary joint, and the driven gear is fixedly connected to the hydraulic chuck. The driven gear meshes with a driving gear, and the driving gear is connected to a drive motor. This invention, by setting an eccentric adjustment component, allows the cavity and connecting tube to be arranged in both eccentric and concentric configurations. A single drive motor can achieve single-rotation or a combination of revolution and rotation of the polishing mold, improving the polishing effect and efficiency.

Description

Technical Field

[0001] This invention relates to the field of polishing technology, and more specifically to an eccentric adjustable jet-assisted water bag polishing device. Background Technology

[0002] With the rapid development of optical systems such as telescopes, lasers, and space cameras, the demand for ultra-precision optical components has exploded, especially for high-precision aspherical, cylindrical, and freeform surfaces. These demands not only place new requirements on ultra-precision CNC machine tools but also on ultra-precision optical processing tools, thereby further promoting the research and development of new processing tools.

[0003] Polishing is a common method for precision machining of optical curved surfaces. Compared with traditional polishing tools, airbag polishing tools can conform to the shape of the curved surface and maintain a relatively stable contact area with the workpiece surface. By changing the gas pressure inside the airbag and the downward pressure of the polishing tool, different contact areas and contact pressures can be achieved, flexibly adapting to the polishing of workpieces of different sizes. However, existing airbag polishing devices can only rotate during polishing, resulting in less than ideal polishing effects and efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose an eccentric adjustable jet-assisted water bag polishing device that can improve the polishing effect and polishing efficiency.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] An eccentric adjustable jet-assisted water bag polishing device includes a cavity with a pressurizing device inside. A jet head is connected to the lower part of the cavity, and a polishing mold is located inside the jet head, with the bottom end of the polishing mold extending beyond the jet head. An eccentric adjustment component is connected to the upper part of the cavity. The eccentric adjustment component includes an adjustment tube and an adjustment plate located on the outer periphery of the adjustment tube. The adjustment tube is connected to the cavity, and the adjustment plate can slide radially relative to the cavity. Two connecting ears are symmetrically provided on the adjustment plate, and adjusting bolts are threaded onto the two connecting ears, which can tightly abut against the outer periphery of the cavity. A hydraulic chuck is provided on the outer periphery of the adjustment tube, and a rotary joint is connected to the upper part of the adjustment tube. A driven gear is provided on the outer periphery of the rotary joint, and the driven gear is fixedly connected to the hydraulic chuck. A driving gear is meshed with the driven gear, and a drive motor is drivenly connected to the driving gear.

[0007] Furthermore, the drive motor is fixed on the bracket; the bracket has a mounting hole, and a roller bearing is installed in the mounting hole, with the inner ring of the roller bearing fixedly connected to the hydraulic chuck.

[0008] Furthermore, the polishing mold is provided with spiral blades above it.

[0009] Furthermore, the inner diameter of the cavity is larger than the inner diameter of the regulating tube.

[0010] Furthermore, the bottom of the adjustment piece is slidably connected to the top of the cavity via a groove, so that the adjustment piece drives the adjustment tube to slide radially relative to the cavity, and the sliding direction of the cavity is consistent with the central axis direction of the adjustment bolt.

[0011] Furthermore, the polishing mold is capable of moving up and down relative to the jet head.

[0012] Furthermore, a spray gap is left between the polishing mold and the jet head.

[0013] Furthermore, the top of the polishing mold is engaged with the bottom of the jet head via an L-shaped stepped structure.

[0014] Furthermore, the bottom of the polishing mold has a hemispherical structure.

[0015] Furthermore, the pressurization device is screwed into the cavity via threads.

[0016] Technical effects of the present invention:

[0017] Compared with existing technologies, the eccentric adjustable jet-assisted water bag polishing device of the present invention, by setting an eccentric adjustment component and using an adjusting bolt to adjust the relative radial movement of the adjusting tube and the cavity, allows the cavity and connecting tube to be set in two ways: eccentric and concentric. A single drive motor can achieve single rotation of the polishing mold or a combination of revolution and rotation, effectively improving polishing efficiency. Jet-assisted polishing increases material removal efficiency and reduces the surface roughness of the workpiece. The hemispherical bottom of the polishing mold can make close contact with the surface of workpieces of various shapes, and the force applied to all points on the workpiece surface is consistent, reducing the requirements for workpiece assembly and adjustment. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural schematic diagram of the eccentric adjustable jet-assisted water bag polishing device of the present invention.

[0019] In the diagram, 1. Bracket; 2. Drive motor; 3. Drive gear; 4. Roller bearing; 5. Adjusting bolt; 6. Pressure booster; 7. Polishing mold; 8. Jet head; 9. Cavity; 10. Spiral blade; 11. Adjusting plate; 12. Rotary joint; 13. Driven gear; 14. Hydraulic chuck; 15. Adjusting pipe; 16. Connecting ear; 17. Mounting hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] Example 1:

[0022] like Figure 1 As shown, this embodiment relates to an eccentric adjustable jet-assisted water bag polishing device, including a cavity 9. A pressurizing device 6 is installed inside the cavity 9, screwed into the cavity 9. A rotary joint 12 is connected to the pressurizing device 6, and the rotary joint 12 is externally connected to a polishing fluid circulation system (not shown in the figure) to allow the polishing fluid to be input into the pressurizing device 6 via the rotary joint 12. A jet head 8 is connected to the lower side of the cavity 9. A polishing mold 7 is installed inside the jet head 8, with its bottom end extending out of the jet head 8. The polishing fluid, pressurized by the pressurizing device 6, can enter the jet head 8. The polishing mold 7 can move up and down relative to the jet head 8. During operation, the polishing mold 7 is completely in contact with the workpiece surface. The spray volume of the polishing mold 7 can be adjusted automatically according to the shape and height of the workpiece, ensuring that the force exerted by the polishing mold 7 on the workpiece surface is consistent throughout, forming a force-controlled polishing device. The top of the polishing mold 7 can be engaged with the jet head 8 via an L-shaped step structure, preventing it from falling out of the jet head 8.

[0023] A jet gap is left between the polishing mold 7 and the jet head 8 to perform jet-assisted polishing on the workpiece.

[0024] The cavity 9 and the rotary joint 12 are connected by an eccentric adjustment component, which includes an adjustment tube 15 and an adjustment piece 11 vertically and integrally connected to the outer periphery of the adjustment tube 15. A hydraulic chuck 14 is sleeved and fixed to the outer periphery of the adjustment tube 15. A driven gear 13 is fixed above the hydraulic chuck 14. The driven gear 13 is sleeved on the outer periphery of the rotary joint 12. A driving gear 3 is meshed with the driven gear 13. A drive motor 2 is driven and connected to the drive gear 3. The drive motor 2 is fixed to a bracket 1, which is used to connect to the tool shaft of the machine tool (not shown in the figure). The bottom of the adjustment piece 11 is slidably connected to the top of the cavity 9 through a sliding groove, so that the adjustment piece 11 can drive the adjustment tube 15 to slide and adjust radially relative to the cavity 9, allowing the position of the cavity 9 to be flexibly adjusted. Two connecting ears 16 are symmetrically provided on the adjusting plate 11. An adjusting bolt 5 is threadedly connected to each connecting ear 16. The central axis of the adjusting bolt 5 is consistent with the sliding direction of the adjusting plate 11. The tail ends of the two adjusting bolts 5 can be tightly pressed against the circumferential side of the cavity 9 to firmly fix the adjusting plate 11 and the cavity 9.

[0025] The relative radial movement of the adjusting tube 15 and the cavity 9 is adjusted by the adjusting bolt 5, so that the cavity 9 and the adjusting tube 15 can be set in two ways: eccentric and concentric. That is, the polishing mold 7 can be rotated by a single drive motor 2 or in a combination of revolution and rotation.

[0026] The inner diameter of the cavity 9 is larger than the inner diameter of the regulating tube 15, so that the regulating tube 15 can be adjusted within the diameter range of the cavity 9, so that the cavity 9 and the regulating tube 15 are eccentric or concentric to different degrees.

[0027] The adjustment piece 11 is located at the bottom end of the adjustment tube 15, and the top end of the cavity 9 is preferably provided with a sealing ring (not shown in the figure). When the adjustment tube 15 is adjusted relative to the cavity 9, the bottom surface of the adjustment piece 11 can form a sealed connection with the cavity 9.

[0028] The hydraulic chuck 14 is fitted with a roller bearing 4 on its outer periphery, and the inner ring of the roller bearing 4 is fixed to the hydraulic chuck 14. The bracket 1 is provided with a mounting hole 17 that matches the roller bearing 4, and the outer ring of the roller bearing 4 is fixed in the mounting hole 17, thereby the eccentric adjustment component can be firmly fixed to the bracket 1.

[0029] A spiral blade 10 is fixedly connected above the polishing mold 7 inside the jet head 8. When the polishing liquid pressurized by the pressurizing device 6 is sprayed onto the spiral blade 10 above the polishing mold 7, the rotation of the spiral blade 10 can drive the polishing mold 7 to rotate at high speed.

[0030] The polishing mold 7 has a hollow hemispherical bottom made of flexible material. High-pressure polishing fluid causes it to expand, and polishing material can be adhered to the outside as needed. The hemispherical shape allows for close contact with workpiece surfaces of various shapes, and the force applied to all points on the workpiece surface is consistent, resulting in lower requirements for workpiece assembly and adjustment.

[0031] Working Principle: During processing, the support 1 is fixed on the tool shaft of the high-precision machine tool (not shown in the figure). The drive motor 2 drives the driving gear 3 and the driven gear 13 to rotate. The driven gear 13 drives the hydraulic chuck 14 to rotate, and the hydraulic chuck 14 drives the adjusting tube 15 to rotate as well. Since the adjusting bolt 5 is tightly fixed to the cavity 9, when the adjusting tube 15 and the cavity 9 are adjusted to be eccentrically connected by the adjusting bolt 5, the cavity 9 can revolve. The polishing mold 7 is driven to revolve by the jet head 8. At the same time, the polishing liquid is sprayed onto the spiral blades 10 of the polishing mold 7 through the rotary joint 12, the eccentric adjustment component, and the pressurizing device 6, causing the polishing mold 7 to rotate and extend, pressing the polishing mold 7 onto the surface of the workpiece. Part of the polishing liquid is sprayed onto the surface of the workpiece through the spray gap between the jet head 8 and the polishing mold 7. Through the revolution of the polishing mold 7, the rotation of the polishing mold 7, and the spraying of the polishing liquid, the purpose of material removal is achieved. This improves the polishing effect and polishing efficiency. The polishing mold 7 revolves and rotates on the workpiece surface to obtain a Gaussian-like removal function. Then, combined with various processing parameters, it can be applied to the deterministic processing of the surface of optical components, effectively improving polishing efficiency.

[0032] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of the present invention should fall within the patent protection scope of the present invention.

Claims

1. An eccentric adjustable jet-assisted water bag polishing device, characterized in that: The device includes a cavity (9), which is equipped with a pressurizing device (6); a jet head (8) is connected to the lower part of the cavity (9), and a polishing mold (7) is provided inside the jet head (8). A spiral blade (10) is provided above the polishing mold (7); the bottom end of the polishing mold (7) can extend out of the jet head (8); an eccentric adjustment component is connected to the upper part of the cavity (9); the eccentric adjustment component includes an adjustment tube (15) and an adjustment plate (11) located on the outer periphery of the adjustment tube (15). The adjustment tube (15) is connected to the cavity (9), and the adjustment plate (11) can slide radially relative to the cavity (9). Two connecting ears (16) are symmetrically provided on the adjustment plate (11), and adjustment bolts (5) are threadedly connected to the two connecting ears (16). The adjusting bolt (5) can be tightly pressed against the outer periphery of the cavity (9); the outer periphery of the adjusting tube (15) is provided with a hydraulic chuck (14), the upper part of the adjusting tube (15) is connected to a rotary joint (12), the outer periphery of the rotary joint (12) is provided with a driven gear (13), the driven gear (13) is fixedly connected to the hydraulic chuck (14), the driven gear (13) is meshed with a driving gear (3), and the driving gear (3) is driven by a drive motor (2); the adjusting bolt (5) is used to adjust the relative radial movement of the adjusting tube (15) and the cavity (9), so that the cavity (9) and the adjusting tube (15) can be set in two ways: eccentric and concentric. A drive motor (2) is used to realize the single rotation or revolution and rotation of the polishing mold (7).

2. The eccentric adjustable jet-assisted water bag polishing device according to claim 1, characterized in that: The drive motor (2) is fixed on the bracket (1); the bracket (1) has a mounting hole (17), and a roller bearing (4) is provided in the mounting hole (17). The inner ring of the roller bearing (4) is fixedly connected to the hydraulic chuck (14).

3. The eccentric adjustable jet-assisted water bag polishing device according to claim 1, characterized in that: The inner diameter of the cavity (9) is larger than the inner diameter of the regulating tube (15).

4. The eccentric adjustable jet-assisted water bag polishing device according to claim 1, characterized in that: The bottom of the adjustment piece (11) is slidably connected to the top of the cavity (9) through a groove, so that the adjustment piece (11) drives the adjustment tube (15) to slide radially relative to the cavity (9), and the sliding direction of the cavity (9) is consistent with the central axis direction of the adjustment bolt (5).

5. The eccentric adjustable jet-assisted water bag polishing device according to claim 1, characterized in that: The polishing mold (7) can move up and down relative to the jet head (8).

6. The eccentric adjustable jet-assisted water bag polishing device according to claim 5, characterized in that: A spray gap is left between the polishing mold (7) and the jet head (8).

7. The eccentric adjustable jet-assisted water bag polishing device according to claim 6, characterized in that: The top of the polishing mold (7) is engaged with the bottom of the jet head (8) through an L-shaped step structure.

8. The eccentric adjustable jet-assisted water bag polishing device according to any one of claims 1-7, characterized in that: The bottom of the polishing mold (7) has a hemispherical structure.

9. The eccentric adjustable jet-assisted water bag polishing device according to claim 8, characterized in that: The pressurizing device (6) is screwed into the cavity (9) by threads.

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