Device based on curved surface ultra-smooth surface machining technology

Abstract

The utility model discloses a device based on the curved surface ultra-smooth surface machining technology. The device comprises a positioning device and a vacuum adsorption device which are coaxial in the horizontal direction and oppositely arranged. The positioning device can move in the axial direction relative to the vacuum adsorption device. The positioning device and the vacuum adsorption device are used for mounting and positioning the rotating curved surface workpiece; a grinding and polishing rod is arranged on the axial side of the positioning device and the axial side of the vacuum adsorption device and detachably fixed to the moving assembly. A vacuum adsorption curved surface table of the vacuum adsorption device is of a curved surface structure; a workpiece leading-in groove is formed in the end part of the positioning device, and the workpiece leading-in groove and the vacuum adsorption device can coaxially rotate; according to the utility model, uneven abrasion of the surface of the workpiece and reduction of the polishing effect are effectively avoided, the structure of the curved-surface workpiece is protected, higher-precision and high-efficiency grinding and polishing processing is realized, and finally a super-smooth surface with nanoscale roughness and no surface defect is obtained.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultra-smooth surface polishing, in particular to a device based on curved ultra-smooth surface processing technology. Background Art

[0002] Most of the existing ultra-smooth surface polishing processing technologies are based on five-axis robotic arms for polishing. Although relatively high precision can be achieved at present, there are still problems with clamping difficulties and long processing time for special-shaped curved surfaces. The existing method clamps and fixes the workpiece by vacuum adsorption according to the special form of the special-shaped curved surface, avoiding the influence of traditional clamping methods on the processed surface. However, when processing high-order rotating special-shaped surfaces, the vacuum adsorption method is difficult to ensure the uniformity and stability of the adsorption force. There are certain limitations when grinding and clamping high-order rotating special-shaped curved surface workpieces, which can easily lead to uneven wear of the workpiece surface and reduced polishing effect. Utility Model Content

[0003] In view of the above-mentioned problems of the prior art, the utility model fully considers the ultra-smooth surface polishing technology of high-order rotating special-shaped curved workpieces, and provides a device based on the ultra-smooth surface processing technology of curved surfaces. The workpiece is fixed on the grinding and polishing machine through vacuum adsorption flexible clamping technology, and the workpiece is gradually ground and polished to finally obtain a rotating curved surface workpiece with nanometer-level roughness and no surface and sub-surface defects.

[0004] The utility model is realized through the following technical solutions:

[0005] The utility model discloses a device based on the technology of ultra-smooth surface processing of curved surfaces; it comprises a group of positioning devices and vacuum adsorption devices which are coaxial and relatively arranged in the horizontal direction; the positioning device can move axially relative to the vacuum adsorption device; the positioning device and the vacuum adsorption device are used to install and position a rotating curved surface workpiece; a grinding and polishing rod is provided on one axial side of the positioning device and the vacuum adsorption device, and the grinding and polishing rod is detachably fixed on the moving component; the vacuum adsorption curved surface table of the vacuum adsorption device is a curved surface structure; a workpiece introduction groove is provided at the end of the positioning device, and the workpiece introduction groove can rotate coaxially with the vacuum adsorption device.

[0006] In the above experimental scheme, one end of the rotating curved surface workpiece is fixed on the vacuum adsorption device through the vacuum adsorption curved surface table, and the other end is fixed on the positioning device through the workpiece introduction groove; the grinding and polishing rod changes its position under the drive of the moving component to realize the grinding and polishing of the rotating curved surface workpiece.

[0007] The device of the present invention is further provided with a slide rail, the direction of which is the same as the axial direction of the positioning device and the vacuum adsorption device, and the positioning device and the moving assembly are respectively slidably arranged on the slide rail.

[0008] A first slider is fixedly connected to the bottom of the positioning device, and the first slider is slidably connected to the slide rail; the positioning device is moved horizontally relative to the vacuum adsorption device by sliding the first slider on the slide rail, thereby fixing and clamping the rotating curved workpiece.

[0009] The moving assembly includes an L-shaped guide rail for realizing the position movement of the grinding and polishing rod. The direction of the L-shaped guide rail is perpendicular to the axial direction of the positioning device and the vacuum adsorption device. A third slider is fixedly connected to the bottom of the L-shaped guide rail. The third slider is slidably connected to the slide rail. The sliding of the third slider on the slide rail realizes the horizontal movement of the L-shaped guide rail. A second slider is also provided on the L-shaped guide rail. The second slider is slidably connected to the L-shaped guide rail and can move in the vertical direction along the L-shaped guide rail. The second slider is also provided with a grinding and polishing rod clamping device for detachably fixing the grinding and polishing rod. The vertical movement of the grinding and polishing rod relative to the rotating curved workpiece is realized by the movement of the second slider along the vertical direction of the L-shaped guide rail. The position change of the grinding and polishing rod in the horizontal and vertical directions can ensure that the force between the grinding and polishing rod and the rotating curved workpiece is uniform and constant, thereby protecting the integrity of the workpiece and realizing high-precision polishing.

[0010] The moving component is also provided with a flow pump, which can be connected to different polishing liquid fluid storage devices according to different grinding and polishing requirements; the outlet of the flow pump is set directly opposite the grinding and polishing rod, and can be set above, below, left or right of the grinding and polishing rod, so that the polishing liquid is always evenly sprayed to the contact point between the grinding and polishing rod and the rotating curved workpiece to avoid damage to the workpiece.

[0011] Furthermore, the flow pump may be fixedly connected to the second slider.

[0012] The vacuum adsorption device includes a rotating platform for driving the vacuum adsorption device, which can rotate coaxially with the workpiece introduction slot. A micro vacuum pump and a vacuum adsorption curved surface table are fixedly installed on one side of the rotating platform, thereby achieving synchronous rotation with the rotating platform. The vacuum adsorption curved surface table is internally provided with a horizontal adsorption channel, one end of which extends to the bottom of the vacuum adsorption curved surface table and the other end extends to the surface of the vacuum adsorption curved surface table. One end of the adsorption channel is connected to the micro vacuum pump, and the other end is divided into at least two branches extending into the interior of the vacuum adsorption curved surface table. The adsorption channel and the air pipe maintain the vacuum state inside the vacuum adsorption curved surface table, which has the effect of adsorbing and fixing the rotating curved surface workpiece.

[0013] The rotating platform, which is designed to rotate coaxially with the workpiece guide slot, has a rotating shaft on its other side for driving the rotating platform. The rotating shaft is fixedly mounted coaxially with the vacuum adsorption curved surface table. The rotating shaft is tightly engaged with a pulley. The drive motor drives the pulley, driving the rotating shaft to rotate, thereby driving the rotating platform and vacuum adsorption curved surface table to rotate coaxially, and further driving the rotating curved surface workpiece.

[0014] In the above implementation plan, the movable or rotating components are equipped with corresponding motors to realize their movement functions; the specific form of realizing the movement is not limited, and exemplary specific forms include gear meshing, screw nut pairs or pulleys.

[0015] As some optimized designs, the surface of the vacuum adsorption curved table and the surface of the workpiece introduction groove are both provided with polytetrafluoroethylene pads; the polytetrafluoroethylene pads have an extremely low friction coefficient, and their presence greatly reduces the friction between the rotating curved workpiece and the vacuum adsorption curved table, thereby effectively preventing the risk of scratches on the surface of the rotating curved workpiece during rotation; some high-order rotating anisotropic curved workpieces are extremely susceptible to wear at the tip and tail, and the use of polytetrafluoroethylene pads plays a role of flexible clamping, avoiding the wear problem of the tip and tail.

[0016] As some optimized designs, the polishing liquid in the flow pump is selected from one of a water polishing liquid, a coarse polishing liquid, and a fine polishing liquid. As some specific examples, the coarse polishing liquid can be selected from one of a diamond coarse polishing liquid, an aluminum oxide coarse polishing liquid, and a silicon carbide coarse polishing liquid; and the fine polishing liquid can be selected from one of a silicon dioxide nanopolishing liquid, an aluminum oxide fine polishing liquid, and an iron oxide fine polishing liquid. These polishing liquids can be selected appropriately based on different polishing requirements.

[0017] As some optimized designs, the grinding and polishing rod is selected from one of an oilstone rod, a wool rod, a sandpaper rod, and a polyurethane rod. The appropriate grinding and polishing rod material and type can be selected according to different grinding and polishing requirements.

[0018] As some optimized designs, the vacuum adsorption device is provided with an outer shell cylinder fixed to the machine tool. The outer shell cylinder is selected from one of steel plate, aluminum alloy plate, and stainless steel plate. The appropriate outer shell cylinder material can be selected according to the use environment and requirements of the machine tool to ensure its strength and durability.

[0019] The features and beneficial effects of this new application are:

[0020] (1) The present invention preferably adopts a curved surface structure on the surface of the vacuum adsorption curved surface table, which can better fit the irregular curved surface of the workpiece, and provides closely arranged adsorption channels inside the vacuum adsorption curved surface table, which can enhance the uniformity and stability of the adsorption force on the curved surface workpiece. A movable workpiece introduction groove is provided at the tip of the curved surface workpiece, which rotates synchronously with the rotating curved surface workpiece and the vacuum adsorption curved surface table, which can further fix the curved surface workpiece, thereby effectively avoiding uneven wear on the workpiece surface and reduction in polishing effect. The present invention also provides polytetrafluoroethylene pads on the surface of the workpiece introduction groove and the vacuum adsorption curved surface table. By adopting flexible clamping technology, the structure of the curved surface workpiece is better protected, and higher precision and high efficiency grinding and polishing of high-order rotating irregular curved surface workpieces are achieved, and finally an ultra-smooth surface with nanometer-level roughness and no surface defects can be obtained.

[0021] (2) The grinding and polishing rod of the present invention can move vertically along the L-shaped guide rail, and through the movement of the L-shaped guide rail on the horizontal slide rail, the grinding and polishing rod can simultaneously move in the horizontal and vertical directions, thereby improving the polishing efficiency of high-order rotating curved surface workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model when viewed from the front at 45°.

[0024] Figure 2 It is a schematic diagram of the overall structure of a specific embodiment of the utility model in the front view direction.

[0025] Figure 3 It is a schematic diagram of the overall structure of the right side vacuum adsorption device of a specific embodiment of the utility model.

[0026] Figure 4 It is a left side view of the right side vacuum adsorption device of a specific embodiment of the utility model.

[0027] Figure 5 This is a schematic diagram of a rotational curved surface workpiece product after processing in a specific embodiment of the present invention.

[0028] Figure 6 This is a white light interferometer detection report of the surface of a rotating curved surface workpiece product in a specific embodiment of the utility model.

[0029] Figure numerals: first machine tool base 1, second machine tool base 2, first motor 11, second motor 21, vacuum adsorption device 3, outer shell cylinder 31, through hole 311, pulley 32, drive motor 33, rotating shaft 34, micro vacuum pump 35, rotating platform 36, first rotating platform 361, second rotating platform 362, pillar 363, vacuum adsorption curved surface table 37, adsorption channel 371, small hole 372, bottom 373, air pipe 38, positioning device 4, third motor 41, workpiece introduction groove 42, rotating curved surface workpiece 5, grinding and polishing rod 6, moving assembly 7, grinding and polishing rod clamping device 71, second slider 72, L-shaped guide rail 73, fixed plate 8, slide rail 9, first slider 10, third slider 20, fourth motor 731, fifth motor 721, flow pump 30, polytetrafluoroethylene pad 40 DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the accompanying drawings. Embodiments of the present invention are given, but the scope of the present invention is not limited thereby.

[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the term "including" and any variations thereof in the description and claims of this application are intended to cover non-exclusive inclusions.

[0032] The utility model discloses a device based on curved surface ultra-smooth surface processing technology.

[0033] See also Figure 1-4 The device for ultra-smooth surface processing technology of curved surface includes a first machine tool base 1 and a second machine tool base 2. A vacuum adsorption device 3 is fixed on the first machine tool base 1, and a positioning device 4 that can move horizontally relative to the vacuum adsorption device 3 is provided on the second machine tool base 2. The positioning device 4 can rotate coaxially with the vacuum adsorption device 3; there is a rotating curved surface workpiece 5 between the vacuum adsorption device 3 and the positioning device 4, and a grinding and polishing rod 6 for grinding and polishing the rotating curved surface workpiece 5 is provided on the coaxial side of the positioning device 4 and the vacuum adsorption device 3. The grinding and polishing rod 6 is detachably fixed on a moving component 7, and the moving component 7 is used to drive the grinding and polishing rod 6 to change its position.

[0034] The first machine tool base 1 and the second machine tool base 2 are connected by a fixed plate 8, and the first machine tool base 1 and the second machine tool base 2 are respectively provided with a first motor 11 and a second motor 21; a slide rail 9 is fixedly provided on the fixed plate 8, and the direction of the slide rail 9 is the same as the axial direction of the positioning device 4 and the vacuum adsorption device 3, and the positioning device 4 and the moving component 7 are respectively slidably set on the slide rail 9.

[0035] A first slider 10 is fixedly connected to the positioning device 4, and the first slider 10 is slidably connected to the slide rail 9. The first slider 10 can slide horizontally along the slide rail 9 under the drive of the second motor 21. The sliding of the first slider 10 on the slide rail 9 realizes the horizontal movement of the positioning device 4 relative to the vacuum adsorption device 3, thereby playing a role in fixing and clamping the rotating curved surface workpiece 5. A workpiece introduction groove 42 is provided at the end of the positioning device 4, and the workpiece introduction groove 42 can fix the rotating curved surface workpiece 5; the tail of the positioning device 4 is provided with a third motor 41, which can drive the workpiece introduction groove 42 to rotate synchronously with the rotating curved surface workpiece 5 and to be coaxial with the vacuum adsorption device 3.

[0036] The moving assembly 7 includes a grinding and polishing rod clamping device 71, a second slider 72, and an L-shaped guide rail 73 for realizing the position movement of the grinding and polishing rod 6.

[0037] The direction of the L-shaped guide rail 73 is perpendicular to the axial direction of the positioning device 4 and the vacuum adsorption device 3. A third slider 20 is fixedly connected to the bottom of the L-shaped guide rail 73. The L-shaped guide rail 73 is slidably connected to the slide rail 9 through the third slider 20. The third slider 20 can drive the L-shaped guide rail 73 to achieve horizontal position changes along the slide rail 9 under the drive of the first motor 11; a second slider 72 is provided on the L-shaped guide rail 73, and the second slider 72 is slidably connected to the L-shaped guide rail 73. A fourth motor 731 is provided at the top of the L-shaped guide rail 73. The second slider 72 can be driven by the fourth motor 731 to achieve vertical movement along the L-shaped guide rail 73.

[0038] The second slider 72 is also fixedly mounted with a polishing rod clamping device 71 for removably securing the polishing rod 6, and a fifth motor 721 for rotating the polishing rod 6. The polishing rod 6 is removably secured to the polishing rod clamping device 71 and positioned above the rotating curved workpiece 5. Driven by the fifth motor 721, the polishing rod 6 rotates in a counter-rotating motion relative to the rotating curved workpiece 5 for polishing.

[0039] The vertical movement of the grinding and polishing rod 6 relative to the rotating curved workpiece 5 is achieved by the vertical movement of the second slider 72 along the L-shaped guide rail 73; at the same time, the horizontal movement of the grinding and polishing rod 6 relative to the rotating curved workpiece 5 is achieved by the horizontal position change of the third slider 20 along the slide rail 9; the position change of the grinding and polishing rod 6 in the horizontal and vertical axial directions can ensure that a uniform and constant force is maintained between the grinding and polishing rod 6 and the rotating curved workpiece 5, thereby protecting the integrity of the workpiece and achieving high-precision polishing.

[0040] A flow pump 30 is also secured to the second slider 72 of the movable assembly 7. The outlet of the flow pump 30 is positioned above the polishing rod 6. This ensures that as the polishing rod 6 moves with the second slider 72, the polishing fluid in the outlet of the flow pump 30 is always sprayed directly onto the contact point between the polishing rod 6 and the rotating curved workpiece 5, preventing damage to the workpiece. The flow pump 30 can be connected to various polishing fluid storage devices to meet different polishing requirements.

[0041] The vacuum adsorption device 3 is fixed on the first machine tool base 1 through the outer shell cylinder 31. The vacuum adsorption device 3 includes a pulley 32, a drive motor 33, a rotating shaft 34, a micro vacuum pump 35, a rotating platform 36, a vacuum adsorption curved surface table 37, and an air pipe 38. The rotating platform 36 includes a first rotating platform 361 and a second rotating platform 362; wherein, the pulley 32, the rotating shaft 34, the first rotating platform 361, the second rotating platform 362, the vacuum adsorption curved surface table 37 and the workpiece introduction groove 42 are coaxially arranged relative to each other to ensure stable adsorption of the rotating curved surface workpiece 5.

[0042] Specifically, the pulley 32 is arranged on the outer side of the middle part of the outer shell cylinder 31 and is connected to the driving motor 33. A through hole 311 is opened in the middle of the outer shell cylinder 31 and the pulley 32. The rotating shaft 34 is inserted into the through hole 311 in the horizontal direction. One end of the rotating shaft 34 is tightly fitted with the pulley 32, and when the driving motor 33 drives the pulley 32 to rotate, it drives the rotating shaft 34 to rotate; the other end of the rotating shaft 34 is fixedly connected to the first rotating platform 361, and the first rotating platform 361 and the second rotating platform 362 are fixedly connected by the support 363. The vacuum adsorption curved surface table 37 is fixed on the outer side of the middle part of the second rotating platform 362 to ensure that the vacuum adsorption curved surface table 37, the first rotating platform 361, and the second rotating platform 362 rotate coaxially under the drive of the rotating shaft 34, thereby adsorbing the rotating curved surface workpiece 5 to rotate.

[0043] Inside the vacuum adsorption curved surface platform 37, a dense array of horizontal adsorption channels 371 are provided. These channels 371 extend from one end to the bottom 373 of the vacuum adsorption curved surface platform 37, where they are interconnected. Their other ends extend to the surface of the vacuum adsorption curved surface platform 37, where they are formed with a number of small holes 372 for adsorption and connection with the rotating curved surface workpiece 5, thereby achieving adsorption and fixation of the rotating curved surface workpiece 5. A micro-vacuum pump 35 is located inside the central portion of the first rotating platform 361. An air pipe 38 is connected to the micro-vacuum pump 35 at one end and branches into at least two branches at the other end, passing through the second rotating platform 362 and extending into the interior of the vacuum adsorption curved surface platform 37. The micro-vacuum pump 35 maintains the vacuum state within the vacuum adsorption curved surface platform. All adsorption channels 371 are interconnected at one end at the bottom 373 of the vacuum adsorption curved surface platform 37. Therefore, connecting the air pipe 38 to any adsorption channel 371 allows it to connect to all of them, maintaining the vacuum state within the vacuum adsorption curved surface platform.

[0044] In the above experimental scheme, the specific form of the movement mode of the motor drive assembly is not limited. Exemplary specific forms include gear meshing, screw-nut pair or pulley.

[0045] The surface of the vacuum adsorption curved surface table 37 of the present invention is a curved surface structure, and its curved surface shape can have a better adsorption and fixing effect on the rotating curved surface workpiece 5. The densely arranged adsorption channels 371 are arranged inside, which can enhance the adsorption capacity of the rotating curved surface workpiece 5 and maintain its stability and not easy to fall off.

[0046] The vacuum adsorption curved surface table 37 involved in the present invention adopts a unique curved surface structure. The shape of this curved surface can provide a better adsorption effect for the rotating curved surface workpiece 5, so that the rotating curved surface workpiece 5 can be more firmly fixed on the vacuum adsorption curved surface table 37, thereby ensuring the accuracy and stability during the processing. The curved surface design of the vacuum adsorption curved surface table 37 not only fits the shape of the rotating curved surface workpiece 5, but also significantly enhances the adsorption force on the rotating curved surface workpiece 5 through the densely arranged adsorption channels 371 inside it. The uniform distribution of these adsorption channels 371 can ensure that the adsorption force acts evenly on all parts of the rotating curved surface workpiece 5, thereby effectively preventing the rotating curved surface workpiece 5 from being displaced or falling off during the processing, ensuring stability and safety during the processing. At the same time, the workpiece introduction groove 42 on the positioning device 4 can further support the tail of the rotating curved surface workpiece 5, and it can rotate synchronously with the rotating curved surface workpiece 5, reducing the wear on the tip of the rotating curved surface workpiece 5 during the processing. The clamping design of the utility model for workpieces with special-shaped curved surfaces not only improves the adsorption efficiency of the workpiece, but also greatly enhances the reliability of the machining process, providing strong support for precision machining.

[0047] As some optimized designs, a first polytetrafluoroethylene pad 40 is fixedly arranged between the vacuum adsorption curved surface table 37 and the rotating curved surface workpiece 5, and a second polytetrafluoroethylene pad 40 is arranged at the connection between the workpiece introduction groove 42 and the rotating curved surface workpiece 5; the polytetrafluoroethylene pad 40 is a material with an extremely low friction coefficient. Its presence greatly reduces the friction between the rotating curved surface workpiece 5 and the vacuum adsorption curved surface table 37, thereby effectively preventing the risk of the surface of the rotating curved surface workpiece 5 being scratched during rotation; for the high-order rotating anisotropic curved surface workpiece of the utility model, its tip and tail are extremely susceptible to wear, and the use of the polytetrafluoroethylene pad 40 plays a role of flexible clamping, avoiding the wear problem of the tip and tail.

[0048] As some optimized designs, the polishing liquid in flow pump 30 is selected from one of a water polishing liquid, a coarse polishing liquid, and a fine polishing liquid. As some specific examples, the coarse polishing liquid can be selected from one of a diamond coarse polishing liquid, an aluminum oxide coarse polishing liquid, and a silicon carbide coarse polishing liquid; and the fine polishing liquid can be selected from one of a silicon dioxide nano-polishing liquid, an aluminum oxide fine polishing liquid, and an iron oxide fine polishing liquid. These polishing liquids can be selected appropriately according to different polishing requirements.

[0049] As some optimized designs, the grinding and polishing rod 6 is selected from one of an oilstone rod, a wool rod, a sandpaper rod, and a polyurethane rod. The appropriate grinding and polishing rod material and type can be selected according to different grinding and polishing requirements.

[0050] As some optimized designs, the outer shell cylinder 31 is selected from one of steel plate, aluminum alloy plate, and stainless steel plate. The appropriate outer shell cylinder material can be selected according to the use environment and requirements of the machine tool to ensure its strength and durability.

[0051] The grinding and polishing process corresponding to the above-mentioned device based on curved surface ultra-smooth surface processing technology is:

[0052] 1. Clamping and fixing: First, the head curved surface part of the rotating curved surface workpiece 5 is brought into close contact with the vacuum adsorption curved surface table 37. Then, the motor 11 is started to drive the positioning device 4 to move horizontally along the slide rail 9 by relying on the first slider 10, so that the tip and tail of the rotating curved surface workpiece 5 are fixed in the workpiece introduction groove 42. Then, the micro vacuum pump 35 is turned on for vacuum adsorption, and the rotating curved surface workpiece 5 is fixedly adsorbed on the vacuum adsorption curved surface table 37. The clamping is completed.

[0053] 2. Rough grinding: Start the drive motor 33, which drives the pulley 32 to rotate. Driven by the pulley 32, the rotating shaft 34, the rotating platform 361, and the vacuum adsorption curved surface table 37 start to rotate synchronously. At the same time, start the motor 11 to drive the workpiece introduction groove 42 to rotate synchronously with the rotating curved surface workpiece 5; fix the oilstone rod with a mesh number of 400 as the grinding and polishing rod 6 on the grinding and polishing rod clamping device 71, start the motor 11 to drive the oilstone rod to rotate, and the oilstone rod contacts the rotating curved surface workpiece 5 to start grinding. During the processing, the oilstone rod moves up and down on the L-shaped guide rail 73 through the second slider 72, and the L-shaped guide rail moves horizontally along the slide rail 9 driven by the third slider 20; ensure that the rotating curved surface workpiece 5 and the oilstone rod maintain a constant contact pressure, and at the same time, the flow pump 30 is connected to water, and the rotating curved surface workpiece 5 and the oilstone rod are cooled during the processing to maintain a uniform processing effect.

[0054] 3. Fine grinding: Fix the oilstone rod with a mesh number of 1200 as the grinding and polishing rod 6 on the grinding and polishing rod clamping device 71, and repeat the above steps.

[0055] 4. Rough polishing: Replace the oilstone rod with a wool rod as the polishing rod 6 and fix it on the polishing rod clamping device 71, and repeat the above steps. In this step, the flow pump 30 is connected to the diamond rough polishing liquid to perform rough polishing on the rotating curved surface workpiece 5.

[0056] 5. Fine polishing: Replace the wool rod with a polyurethane rod as the polishing rod 6 and fix it on the polishing rod clamping device 71. Repeat the above steps. In this step, the flow pump 30 is connected to the silicon dioxide nano-polishing liquid for final polishing.

[0057] 6. After processing, use Spanish sensorfar high-precision white light interferometer to test the product surface. The test results are as follows: Figure 5 As shown in Table 1, it can be seen from the figure that an ultra-smooth surface with nano-scale roughness and no surface defects can be obtained.

[0058] Table 1 is ISO 25178-Roughness (SL)

[0059] Height parameter Sq 1.747 nm RMS height Sa 1.345 nm Arithmetic mean height

[0060] Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and should not be construed as limiting the present invention. Those skilled in the art may modify, alter, replace, and distort the above embodiments within the scope of the present invention. Furthermore, those skilled in the art may combine and incorporate the different embodiments or examples described in this specification, as well as features of the different embodiments or examples, without conflicting with each other.

Claims

1. A device based on curved surface ultra-smooth surface processing technology, characterized in that: The invention comprises a group of positioning devices (4) and vacuum adsorption devices (3) which are coaxially and relatively arranged in the horizontal direction; the positioning device (4) can move axially relative to the vacuum adsorption device (3); the positioning device (4) and the vacuum adsorption device (3) are used to install and position a rotating curved surface workpiece (5); a grinding and polishing rod (6) is provided on one axial side of the positioning device (4) and the vacuum adsorption device (3), and the grinding and polishing rod (6) is detachably fixed on a moving component (7); the vacuum adsorption curved surface table (37) of the vacuum adsorption device (3) is a curved surface structure; a workpiece introduction groove (42) is provided at the end of the positioning device (4), and the workpiece introduction groove (42) can rotate coaxially with the vacuum adsorption device (3).

2. The device based on curved surface ultra-smooth surface processing technology according to claim 1, characterized in that: The device is provided with a slide rail (9), the direction of the slide rail (9) is the same as the axial direction of the positioning device (4) and the vacuum adsorption device (3), and the positioning device (4) and the moving component (7) are respectively slidably arranged on the slide rail (9).

3. The device based on curved surface ultra-smooth surface processing technology according to claim 1, characterized in that: A first sliding block (10) is fixedly connected to the bottom of the positioning device (4), and the first sliding block (10) is slidably connected to the slide rail (9).

4. The device based on curved surface ultra-smooth surface processing technology according to claim 1, characterized in that: The moving assembly (7) includes an L-shaped guide rail (73), and the direction of the L-shaped guide rail (73) is perpendicular to the axial direction of the positioning device (4) and the vacuum adsorption device (3); A third slider (20) is fixedly connected to the bottom of the L-shaped guide rail (73) for enabling the L-shaped guide rail (73) to move horizontally on the slide rail (9), and the third slider (20) is slidably connected to the slide rail (9); A second slider (72) is provided on the L-shaped guide rail (73) for driving the polishing rod (6) to move in a vertical direction. The second slider (72) is slidably connected to the L-shaped guide rail (73) and moves in a vertical direction along the L-shaped guide rail (73). A grinding and polishing rod clamping device (71) for detachably fixing the grinding and polishing rod (6) is fixedly arranged on the second sliding block (72).

5. The device based on curved surface ultra-smooth surface processing technology according to claim 1, characterized in that: A polytetrafluoroethylene pad (40) is provided on the surface of the workpiece introduction groove (42).

6. The device based on curved surface ultra-smooth surface processing technology according to claim 1, characterized in that: The moving component (7) is provided with a flow pump (30); The outlet of the flow pump (30) is arranged facing the polishing rod (6); The flow pump (30) is fixedly connected to the second slider (72); In the flow pump (30), the polishing liquid is selected from one of a coarse polishing liquid and a fine polishing liquid.

7. The device based on curved surface ultra-smooth surface processing technology according to claim 1, characterized in that: The vacuum adsorption device (3) comprises a rotating platform (36) for driving the vacuum adsorption device (3) to rotate; A micro vacuum pump (35) and a vacuum adsorption curved surface platform (37) are fixed on one side of the rotating platform (36); a horizontally arranged adsorption channel (371) is provided inside the vacuum adsorption curved surface platform (37); one end of the adsorption channel (371) extends to the bottom (373) of the vacuum adsorption curved surface platform (37), and the other end extends to the surface of the vacuum adsorption curved surface platform (37); one end of the air pipe (38) is connected to the micro vacuum pump (35), and the other end is divided into at least two branches that penetrate into the interior of the vacuum adsorption curved surface platform (37); A rotating shaft (34) for driving the rotating platform (36) to rotate is fixedly provided on the other side of the rotating platform (36), and the rotating shaft (34) is fixedly provided coaxially with the vacuum adsorption curved surface platform (37).

8. The device based on curved surface ultra-smooth surface processing technology according to claim 7, characterized in that: A polytetrafluoroethylene pad (40) is provided on the surface of the vacuum adsorption curved surface platform (37).

9. The device based on curved surface ultra-smooth surface processing technology according to claim 1, characterized in that: The polishing rod (6) is selected from one of an oilstone rod, a wool rod, a sandpaper rod, and a polyurethane rod.

10. The device based on curved surface ultra-smooth surface processing technology according to claim 1, characterized in that: The vacuum adsorption device (3) is provided with an outer shell cylinder (31) outside, and the outer shell cylinder is selected from one of a steel plate and an aluminum alloy plate.

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