Dense group hole thin plate vacuum adsorption device and dense group hole thin plate machining method

Abstract

The invention provides a dense group hole thin plate vacuum adsorption device and a dense group hole thin plate machining method. The device comprises a base, vacuumizing equipment, a variable adsorption guide rail and a deformation spike suction cup. The variable adsorption guide rail comprises a guide rail main body, two movable air bags and an inflation and deflation assembly, the guide rail main body is provided with a groove and a narrow slit communicated with the groove, and the two movable air bags are inflated to define an adsorption cavity; the deformation spike sucking disc comprises a sucking disc main body and a sucking disc, the sucking disc main body is provided with a vacuumizing cavity connected with vacuumizing equipment, and the sucking disc is provided with a plurality of holes communicated with the vacuumizing cavity and a plurality of deformation spikes. The adsorption position can be flexibly adjusted according to the size of the thin plate, the process clamping area needed by a traditional clamping mode is reduced, and raw materials are saved. The deformed spikes can be inserted into the holes after the group holes are machined, the negative pressure state in the suction cup is maintained, thin plate deformation or bulging caused by electrolyte scouring is prevented, and the consistency and precision of group hole machining are improved.

Description

Technical Field

[0001] This invention relates to the field of electrochemical processing technology, and more specifically, to a vacuum adsorption device for densely porous thin plates and a method for processing densely porous thin plates. Background Technology

[0002] In modern aircraft and engine design, numerous integral, thin-walled, complex structures have emerged. Typical examples include perforated plates in aircraft APUs and engine cooling systems. To improve the temperature operating range and material strength, high-temperature alloys and high-temperature titanium alloys are typically used. Structurally, these structures often feature complex concave-convex shapes, high ribs, or irregularly shaped complex channels on thin walls. The sound-absorbing pads in aircraft APUs or aero-engines often have perforated plates with hundreds of thousands of holes densely packed on their surface. These holes bend and twist according to the engine's structural requirements, resulting in complex structures. Furthermore, the perforated plates in sound-absorbing structures are often thin-walled curved surfaces, easily deformed under stress and difficult to correct. The internal temperature of modern aero-engine combustion chambers reaches approximately 2200℃, far exceeding the melting point of the metal materials used in blades and combustion chamber walls. Therefore, to ensure the high-temperature combustion gases in the combustion chamber and exhaust section can continue to function properly at high temperatures, laminated cooling structures are widely used for high-temperature components in the combustion chamber. Laminated cooling technology is a very promising cooling technology that can significantly reduce cooling gas consumption, greatly increase cooling gas coverage, and thus improve combustion efficiency. The combustion chamber cooling structure mainly consists of a diffuser plate with dense clusters of holes and an impact plate with clusters of columns at the bottom. The processing of the diffuser plate also requires the processing of dense clusters of holes.

[0003] These integral, thin-walled, complex structural components share common characteristics: poor machinability of the material (high strength and hardness), complex shapes (various bosses, grooves, and curved surfaces, etc.), and thin and light structures (extremely large material removal rates during machining from blanks, sometimes reaching 60% to 80%, with part wall thicknesses as thin as approximately 0.5 mm). These characteristics make commonly used CNC milling difficult or even impossible, resulting in extremely low machining efficiency, high costs, poor surface quality, and deformation during machining that is difficult to control.

[0004] Machining densely packed holes on thin-walled structures is difficult to achieve using conventional methods, but photoelectrochemical machining can be employed. Photoelectrochemical machining is highly adaptable to various materials, not limited by material strength or hardness, and can be used to process almost all conductive materials. It features short production preparation cycles, high processing efficiency, and high processing precision, making it suitable for machining densely packed perforated plates for aircraft and engines.

[0005] The perforated plates constituting the sound-absorbing / cooling structure are typically thin plates with a thickness of 0.8mm to 1.5mm and an area of ​​not less than 500mm × 800mm. These thin plates are mostly delivered as hot-rolled coils, and in actual use, they are cut into smaller pieces. However, cutting the coiled strip results in warping, and during the electrolytic machining of the perforated plates, the electrolyte washes over them, causing the preset machining gap to become inconsistent, leading to short circuits or low machining accuracy.

[0006] Currently, the actual electrolytic machining of such rolled sheets mainly uses a clamping block to press the four corners. This clamping method has three main problems: First, clamping requires reserving a process clamping area of ​​no less than 30mm around the workpiece sheet, resulting in material waste. Second, when the sheet is pressed tightly around the edges, a bulge often appears in the middle. When the tool cathode moves from the edge to the middle, the gap between the workpiece and the anode can become smaller, affecting the consistency of the holes; in some cases, the electrode may even come into direct contact with the workpiece, causing a short circuit and burning of both the workpiece and the electrode. Finally, when the entire sheet is electrolytically machined to create holes, the electrolyte flows through the already machined holes, into the back of the sheet, fills the gap between the sheet and the machine tool's marble table, lifts the workpiece, affects the interval during electrolytic machining, and impacts the accuracy of the holes. Summary of the Invention

[0007] (a) Technical problems to be solved The technical problem to be solved by this invention is that large-diameter perforated thin plates are prone to bulging during electrolytic processing, resulting in poor processing consistency, and the reserved clamping area around the workpiece leads to excessive raw material consumption.

[0008] (II) Technical Solution To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a vacuum adsorption device for a thin plate with densely packed holes, comprising a base, a vacuum pumping device, a variable adsorption guide rail, and a deformable spiked suction cup; the variable adsorption guide rail includes a guide rail body, two movable airbags, and an inflation / deflation assembly; the guide rail body has a groove and a narrow slit communicating with the groove; the two movable airbags are arranged opposite to each other in the groove and surround to form an adsorption cavity; the bottom of the adsorption cavity is provided with a straight-through nozzle for an air pipe connected to the vacuum pumping device; the inflation / deflation assembly is connected to the movable airbags and is used to inflate or deflate the movable airbags; the groove is used to contact the peripheral area of ​​the thin plate part; the deformable spiked suction cup includes a suction cup body and a suction cup; the suction cup is connected to the suction cup body; the suction cup body has a vacuum pumping cavity connected to the vacuum pumping device; the suction cup has multiple holes communicating with the vacuum pumping cavity; the suction cup also has multiple deformable spikes, which are used to contact the hole processing area of ​​the thin plate part. This technical solution effectively solves the problem of fixing thin sheet parts during electrolytic machining through the synergistic effect of a variable adsorption guide rail and a deformable spiked chuck. The movable airbag design of the variable adsorption guide rail allows for flexible adjustment of the adsorption position according to the size of the thin sheet, reducing the process clamping area required by traditional clamping methods and saving raw materials. The deformable spikes on the deformable spiked chuck can be inserted into the holes after multi-hole machining, maintaining a negative pressure state within the chuck and preventing electrolyte erosion that could cause deformation or bulging of the thin sheet, thereby ensuring the stability of the machining gap and improving the consistency and accuracy of multi-hole machining.

[0009] Preferably, the system further includes a gas-liquid separator, which comprises a cylinder, a first partition, and a second partition. The cylinder has a collection chamber. Multiple first partitions are disposed within the collection chamber and are spaced apart and connected to the upper side wall of the cylinder. Multiple second partitions are disposed within the collection chamber and are spaced apart and connected to the lower side wall of the cylinder. The multiple first partitions and multiple second partitions are staggered to form an S-shaped flow channel. The cylinder has an inlet, a gas outlet, and an electrolyte outlet. The inlet is located at the end of the S-shaped flow channel, the gas outlet is located at the top of the cylinder, and the electrolyte outlet is located at the bottom of the cylinder. The gas outlet is connected to the vacuum pump, and the inlet is connected to the gas tube nozzle and the suction cup body. The gas-liquid separator effectively separates the electrolyte and air mixture recovered from the variable adsorption guide rail and the deformable spiked suction cup. Its internal S-shaped flow channel design increases the gas-liquid contact area and path, achieving efficient separation using density differences and preventing electrolyte from entering the vacuum pump and causing blockage or corrosion. Meanwhile, the gas-liquid separator acts as a stable vacuum "reservoir," which helps maintain the vacuum level of the entire adsorption system, further improving the reliability of adsorption on thin plate parts and enabling the recycling of electrolyte, which aligns with the concept of green manufacturing.

[0010] Preferably, there are two inlets, one located at one end of the S-shaped flow channel and the other at the other end. This dual-inlet design allows the gas-liquid mixture to enter the gas-liquid separator independently via the variable adsorption guide rail and the deformable spiked suction cup, improving separation efficiency and processing capacity, and ensuring stable operation of the system under high-load processing. Simultaneously, the gas-liquid mixtures flowing in opposite directions collide in the middle, creating an "aeration" effect that effectively separates the gas from the electrolyte.

[0011] Preferably, the base includes a marble platform and a support, the support being connected to the marble platform, and the variable adsorption guide rail being disposed on the support.

[0012] Preferably, the movable airbag includes an airbag body, an airbag strip, and an inflation / deflation nozzle. The airbag body is disposed within the groove, the airbag strip is connected to the airbag body and disposed within the narrow slit, and the inflation / deflation nozzle is connected to the airbag body and the inflation / deflation assembly. This structural design allows the airbag body to tightly fill the groove and fix its position after inflation, while the airbag strip seals both ends of the narrow slit, forming a better line or surface contact seal with the bottom of the thin plate part, enhancing the sealing performance of the adsorption chamber. The inflation / deflation nozzle facilitates quick connection to the inflation / deflation assembly, enabling airbag inflation and deflation operations and improving clamping efficiency.

[0013] Preferably, the groove is a cylindrical groove, and the airbag body is a cylindrical airbag. The cylindrical shape of the groove and airbag body provides better structural strength and sealing uniformity. After inflation, the airbag forms a uniform contact pressure with the inner wall of the cylindrical groove, which helps to form a stable and reliable adsorption cavity and reduces the risk of gas leakage.

[0014] Preferably, the deformable spikes and the holes are staggered. This staggered arrangement of the deformable spikes and vacuum holes prevents the spikes from completely blocking the vacuum channel. Even after the spikes are inserted into the group of holes, the effective formation and maintenance of negative pressure inside the suction cup is ensured, guaranteeing the suction cup's continued adsorption capacity after the group of holes has been processed.

[0015] Preferably, the deformable spikes are made of silicone material. Silicone material is soft, elastic, and corrosion-resistant. The soft deformable spikes are easy to bend and insert into the holes without scratching the processed hole walls; their good elasticity ensures a tight fit with the hole walls, effectively sealing off air; their corrosion resistance allows them to adapt to electrolyte environments, extending their service life.

[0016] Secondly, the present invention provides a method for processing densely porous thin plates, which uses the aforementioned vacuum adsorption device for processing densely porous thin plates. The processing method includes the following steps: Adjust the position of the two movable airbags so that their positions correspond to the placement position of the sheet metal part; The thin sheet part is placed on a variable adsorption guide rail, and the narrow slit is made to contact the bottom of the thin sheet part. The inflation / deflation assembly inflates the movable airbag, causing the movable airbag to expand. The two movable airbags and the groove together form an adsorption cavity. The vacuum equipment evacuates the adsorption chamber, and the thin plate part is adsorbed and fixed on the variable adsorption guide rail; Photoelectric electrolytic machining is performed on the hole processing area of ​​the thin plate part to form a group of holes. Multiple deformable spikes pass through the group of holes to seal them. A vacuum pump evacuates the suction cup body, and the suction cup adheres to the thin plate part.

[0017] (III) Beneficial Effects The above-described technical solution of the present invention has at least the following advantages: 1. In this invention, the movable airbag can move within the groove of the guide rail body to change its fixed position. The airbag is inflated by the inflation / deflation assembly to create a closed adsorption chamber. The thin-plate part is placed on a narrow slit in the adsorption chamber, and then a vacuum device is used to evacuate the adsorption chamber to achieve adsorption and fixation of the thin-plate part. This invention, by changing the fixed position of the movable airbag, can meet the adsorption and fixation needs of thin plates of different sizes and specifications, exhibiting strong adaptability and reducing material consumption in the reserved clamping area.

[0018] 2. In this invention, the front end of the chuck of the deformable spiked chuck is provided with deformable spikes. The soft deformable spikes penetrate into the pre-machined holes on the thin plate part, block the air in the holes, maintain the negative air pressure in the chuck, thereby preventing the workpiece from being lifted by the electrolyte and affecting the machining accuracy.

[0019] 3. In this invention, the gas-liquid separator can separate the recovered electrolyte and air, preventing the electrolyte from drying out and precipitating salt that could clog pipes and damage the vacuum equipment. Simultaneously, the gas-liquid separator also acts as a "reservoir" for vacuuming, which helps the variable adsorption guide rail and deformable spiked suction cups maintain a stable vacuum level, ensuring the reliability of the adsorption thin plate parts. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the structure of the densely porous thin-plate vacuum adsorption device provided in an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the variable adsorption guide provided in an embodiment of the present invention.

[0023] Figure 3 This is a cross-sectional view of the deformable spiked suction cup provided in an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the deformable spiked suction cup provided in an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the gas-liquid separator provided in an embodiment of the present invention.

[0026] Figure 6 This is a structural cross-sectional view of the gas-liquid separator provided in an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the structure of the perforated heat insulation panel provided in an embodiment of the present invention.

[0028] The labels for the attached figures are as follows: 100. Thin plate parts; 1. Base; 2. Vacuum equipment; 3. Variable adsorption guide rail; 4. Deformable spiked suction cup; 5. Gas-liquid separator; 11. Marble platform; 12. Support; 31. Guide rail body; 32. Movable airbag; 33. Adsorption chamber; 41. Suction cup body; 42. Suction cup; 51. Cylinder; 52. First partition; 53. Second partition; 54. S-shaped flow channel; 311. Groove; 312. Narrow slit; 321. Airbag body; 322. Airbag strip; 323. Inflation / depression nozzle; 331. Straight-insertion air tube nozzle; 411. Vacuum chamber; 421. Hole; 422. Deformable spike; 511. Collection chamber; 512. Inlet; 513. Gas outlet; 514. Electrolyte outlet. Detailed Implementation

[0029] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this invention will be described in more detail below with reference to specific embodiments: like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment of the invention provides a vacuum adsorption device for a densely porous thin plate, including a base 1, a vacuum pumping device 2, and a deformable spiked suction cup 4; the variable adsorption guide rail 3 includes a guide rail body 31, two movable airbags 32, and an inflation / deflation assembly. The guide rail body 31 is provided with a groove 311 and a narrow slit 312 communicating with the groove 311. The two movable airbags 32 are arranged opposite to each other in the groove 311 and enclose to form an adsorption cavity 33. The bottom of the adsorption cavity 33 is provided with a straight-through nozzle 331 for the air pipe connected to the vacuum pumping device 2. The inflation / deflation assembly is connected to the movable airbags 311. The movable airbag 32 and the inflation / deflation assembly are used to inflate or deflate the movable airbag 32. The groove 311 is used to contact the peripheral area of ​​the thin plate part 100. The deformable spike suction cup 4 includes a suction cup body 41 and a suction cup 42. The suction cup 42 is connected to the suction cup body 41. The suction cup body 41 has a vacuum chamber 411 connected to the vacuum pumping device 2. The suction cup 42 has a plurality of holes 421 that communicate with the vacuum chamber 411. The suction cup 42 also has a plurality of deformable spikes 422, which are used to contact the hole processing area of ​​the thin plate part 100.

[0033] Specifically, the main function of the deformable spiked suction cup 4 is to solve the problems of thin plate parts 100 easily curling and bulging, and the thin plate easily bulging due to electrolyte erosion, resulting in unstable processing gaps. Before electrolytic machining, the holes on the surface of the thin plate part 100 are not machined. Under atmospheric pressure, the deformable spikes 422 of the deformable spiked suction cup 4 are squeezed and bent under the thin plate part 100, while firmly adhering to the thin plate part 100. During electrolytic machining, when the holes on the thin plate part 100 are machined, air enters the suction cup 42 through the holes on the thin plate part 100. The air pressure inside and outside the suction cup 42 is balanced, and the deformable spikes 422 are released by atmospheric force. The deformable spikes 422 extend into the machined holes, squeezing out the air entering the suction cup space. As the deformable spikes 422 enter the holes of the thin plate, the air pressure inside the suction cup 42 continues to decrease, and the thin plate part 100 is re-adhered to the surface of the suction cup 42, thereby avoiding changes in the processing gap.

[0034] like Figure 5 and Figure 6 As shown, in one embodiment, a gas-liquid separator 5 is also included. The gas-liquid separator 5 includes a cylinder 51, a first partition 52, and a second partition 53. The cylinder 51 has a collection chamber 511. Multiple first partitions 52 are disposed in the collection chamber 511 and are spaced apart and connected to the upper side wall of the cylinder 51. Multiple second partitions 53 are disposed in the collection chamber 511 and are spaced apart and connected to the lower side wall of the cylinder 51. The multiple first partitions 52 and multiple second partitions 53 are staggered to form an S-shaped flow channel 54. The cylinder 51 has an inlet 512, a gas outlet 513, and an electrolyte outlet 514. The inlet 512 is located at the end of the S-shaped flow channel 54, the gas outlet 513 is located at the top of the cylinder 51, and the electrolyte outlet 514 is located at the bottom of the cylinder 51. The gas outlet 513 is connected to a vacuum device 2, and the inlet 512 is connected to a gas pipe direct insertion nozzle 331 and a suction cup body 41.

[0035] During electrolytic machining, the electrolyte passes through the variable adsorption guide rail 3 and the deformable spiked suction cup 4, and finally flows into the vacuum pumping equipment 2. As electrolytic machining ends, water evaporates, and industrial salt precipitates, clogging the pipeline and damaging the vacuum pumping equipment 2. To address the blockage and corrosion caused by the electrolyte to the pipeline and vacuum pumping equipment 2, a gas-liquid separator 5 is designed in the vacuum pumping pipeline. The gas-liquid separator mainly has four interfaces, such as... Figure 5 and Figure 6 As shown: Gas outlet 513 is located at the top of gas-liquid separator 5, serving as the main interface for the vacuum-sealed pipe; the two inlets 512 are the inlets for the electrolyte flowing from the variable adsorption guide rail 3 and the deformable spiked suction cup 4 into gas-liquid separator 5, where the pipes mainly contain a mixture of electrolyte and air; electrolyte outlet 514 is the outlet for the electrolyte after gas-liquid separation, connected to the liquid delivery system. The interior of gas-liquid separator 5 is shown below. Figure 6As shown, the gas-liquid mixture is collected by the variable adsorption guide rail 3 and the deformable spiked suction cup 4, flowing in from the inlets 512 at both ends. It then passes over the interlocking first and second partitions 52 and 53. The air, being less dense, is located at the top of the collection chamber 511, while the electrolyte, being denser, settles at the bottom. The lighter air is drawn away by the vacuum device 2 through the gas outlet 513, while the heavier electrolyte flows back to the delivery system through the electrolyte outlet 514. The gas-liquid separator also acts as a "vacuum reservoir," which helps the variable adsorption guide rail 3 and the deformable spiked suction cup 4 maintain a stable vacuum level, ensuring the reliability of the adsorption plate connection 100.

[0036] In one embodiment, there are two inlets 512, one inlet 512 is located at one end of the S-shaped flow channel 54, and the other inlet 512 is located at the other end of the S-shaped flow channel 54.

[0037] In one embodiment, the base 1 includes a marble platform 11 and a support 12, the support 12 being connected to the marble platform 11, and a variable adsorption guide rail 3 being disposed on the support 12.

[0038] In one embodiment, the movable airbag 32 includes an airbag body 321, an airbag strip 322, and an inflation / deflation nozzle 323. The airbag body 321 is disposed in a groove 311, the airbag strip 322 is connected to the airbag body 321 and disposed in a narrow slit 312, and the inflation / deflation nozzle 323 is connected to the airbag body 321 and to an inflation / deflation assembly.

[0039] The movable airbag 32 has its internal air pressure controlled by the inflation / deflation nozzle 323. When the movable airbag 32 is fully inflated, it expands and fills the groove 311 of the guide rail body 31, locking itself in the groove 311. The groove 311 between the two inflated movable airbags 32 forms a closed inner cavity (adsorption cavity 33). The top of the adsorption cavity 33 has a narrow slit 312, and the bottom of the adsorption cavity 33 has a straight-through air pipe nozzle 331. The adsorption cavity 33 is connected to a vacuum device 2 (preferably an air compressor) through the straight-through air pipe nozzle 331 and the air pipe to maintain the air pressure inside the adsorption cavity 33 below atmospheric pressure. The top of the narrow slit 312 covers the thin plate part 100 with holes to be processed. Under atmospheric pressure, the thin plate part 100 is adsorbed onto the surface of the guide rail body 31, thus fixing the thin plate part 100. When the movable airbag 32 is deficient in air pressure, the movable airbag 32 contracts, the adsorption chamber 33 fails, and air enters the adsorption chamber 33. The movable airbag 32 can move, allowing the workpiece to be replaced or the position of the movable airbag 32 to meet the fixing requirements of thin plate parts 100 of different sizes.

[0040] In one embodiment, the groove 311 is a cylindrical groove, and the airbag body 321 is a cylindrical airbag.

[0041] In one embodiment, the deformable spikes 422 and holes 421 are arranged alternately.

[0042] In one embodiment, the deformable spikes 422 are made of silicone material.

[0043] This invention provides a method for processing densely porous thin plates, which uses a vacuum adsorption device for processing densely porous thin plates. The processing method includes the following steps: Adjust the positions of the two movable airbags 32 so that their positions correspond to the placement position of the thin plate part 100; The thin plate 100 is placed on the variable adsorption guide rail 3, and the narrow slit 312 is in contact with the bottom of the thin plate part 100. The inflation and deflation assembly inflates the movable airbag 32, causing the movable airbag 32 to expand. The two movable airbags 32 and the groove 311 together form an adsorption cavity 33. Vacuum equipment 2 evacuates the adsorption chamber 33, and thin plate parts 100 are adsorbed and fixed on the variable adsorption guide rail 3. Photoelectric electrolytic machining is performed on the hole processing area on the thin plate part 100 to form a group of holes in the hole processing area on the thin plate part 100; Multiple deformable spikes 422 pass through the group of holes to seal them. Vacuum equipment 2 vacuums the suction cup body 41, and the suction cup 42 adsorbs the thin plate part 100.

[0044] The following are specific embodiments provided in this application: Taking the installation and fixing of an oblong perforated heat insulation panel during photoelectric electrolytic processing as an example, common styles of perforated heat insulation panels are as follows: Figure 7 As shown, the heat insulation screen perforated plate has an irregular structure, with a trapezoidal short side of 420mm, a trapezoidal long side of 568mm, a height of 176mm, a plate thickness of 0.8mm, and densely distributed φ1.2mm holes on the thin plate.

[0045] Steps for fixing the perforated plate of the heat insulation screen onto the guide rail: (1) Adjust the distance between the two variable adsorption guide rails 3 so that the distance between the outer edges of the variable adsorption guide rails 3 is less than 176mm.

[0046] (2) Release the compressed gas in the variable adsorption guide rail 3 respectively, and move the movable airbag 32 to the bottom of the thin plate part 100. Re-energize the movable airbag 32 until the internal air pressure reaches more than 3 bar, and ensure that the inner wall of the movable airbag 32 squeezes the groove 311 does not slide and there is no gas leakage.

[0047] (3) Place the thin plate part 100, observe the protruding part of the thin plate part 100, record the position, remove the thin plate part 100, and place the deformable spike suction cup 4 at the recorded position.

[0048] (4) Connect the vacuum pumping device 2 to the variable adsorption guide rail 3, the deformable spiked suction cup 4 and the gas-liquid separator 5.

[0049] (5) Reposition the thin plate part 100, turn on the vacuum equipment 2, and maintain the vacuum degree of the variable adsorption guide rail 3, the deformable spike suction cup 4 and the gas-liquid separator 5 between -3 and -6 bar, so that the thin plate part 100 can be fixed on the device.

[0050] (6) Electrolytically process the thin plate part 100 to form a group of holes thereon.

[0051] 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 within the protection scope of the present invention.

Claims

1. A vacuum adsorption device for a densely porous thin plate, characterized in that, include: Base; Vacuum equipment; A variable adsorption guide rail includes a guide rail body, two movable airbags, and an inflation / deflation assembly. The guide rail body has a groove and a narrow slit connected to the groove. The two movable airbags are arranged opposite each other in the groove and enclose an adsorption chamber. The bottom of the adsorption chamber is provided with a straight-through nozzle for air pipes connected to a vacuum pump. The inflation / deflation assembly is connected to the movable airbags and is used to inflate or deflate the movable airbags. The groove is used to contact the peripheral area of ​​the thin plate part. A deformable spiked suction cup includes a suction cup body and a suction cup. The suction cup is connected to the suction cup body. The suction cup body has a vacuum chamber connected to the vacuum pumping device. The suction cup has multiple holes communicating with the vacuum chamber. The suction cup also has multiple deformable spikes for contacting the hole processing area of ​​the thin plate part.

2. The vacuum adsorption device for densely porous thin plates as described in claim 1, characterized in that, It also includes a gas-liquid separator, which comprises a cylinder, a first partition, and a second partition. The cylinder has a collection chamber. Multiple first partitions are disposed in the collection chamber and are spaced apart and connected to the upper side wall of the cylinder. Multiple second partitions are disposed in the collection chamber and are spaced apart and connected to the lower side wall of the cylinder. The multiple first partitions and multiple second partitions are staggered to form an S-shaped flow channel. The cylinder has an inlet, a gas outlet, and an electrolyte outlet. The inlet is located at the end of the S-shaped flow channel. The gas outlet is located at the top of the cylinder. The electrolyte outlet is located at the bottom of the cylinder. The gas outlet is connected to the vacuum equipment. The inlet is connected to the gas pipe direct insertion nozzle and the suction cup body.

3. The vacuum adsorption device for densely porous thin plates as described in claim 2, characterized in that, There are two inlets, one located at one end of the S-shaped flow channel and the other located at the other end of the S-shaped flow channel.

4. The vacuum adsorption device for densely porous thin plates as described in claim 1, characterized in that, The base includes a marble platform and a support, the support is connected to the marble platform, and the variable adsorption guide rail is disposed on the support.

5. The vacuum adsorption device for densely porous thin plates as described in claim 1, characterized in that, The movable airbag includes an airbag body, an airbag strip, and an inflation / deflation nozzle. The airbag body is disposed in the groove, the airbag strip is connected to the airbag body and disposed in the narrow slit, the inflation / deflation nozzle is connected to the airbag body, and the inflation / deflation nozzle is connected to the inflation / deflation assembly.

6. The vacuum adsorption device for densely porous thin plates as described in claim 5, characterized in that, The groove is a cylindrical groove, and the airbag body is a cylindrical airbag.

7. The vacuum adsorption device for densely porous thin plates as described in claim 1, characterized in that, The deformable spikes are arranged alternately with the holes.

8. The vacuum adsorption device for densely porous thin plates as described in claim 1, characterized in that, The deformable spikes are made of silicone material.

9. A method for processing a densely perforated thin plate, characterized in that, The processing is carried out using the vacuum adsorption device for densely porous thin plates as described in any one of claims 1-8, and the processing method includes the following steps: Adjust the position of the two movable airbags so that their positions correspond to the placement position of the sheet metal part; The thin sheet part is placed on a variable adsorption guide rail, and the narrow slit is made to contact the bottom of the thin sheet part. The inflation / deflation assembly inflates the movable airbag, causing the movable airbag to expand. The two movable airbags and the groove together form an adsorption cavity. The vacuum equipment evacuates the adsorption chamber, and the thin plate part is adsorbed and fixed on the variable adsorption guide rail; Photoelectric electrolytic machining is performed on the hole processing area of ​​the thin plate part to form a group of holes. Multiple deformable spikes pass through the group of holes to seal them. A vacuum pump evacuates the suction cup body, and the suction cup adheres to the thin plate part.

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