An ultra-thin airfoil skin clamping device and processing method

Abstract

The application discloses a kind of ultra-thin airfoil skin clamping devices and processing process method, it is related to skin processing technical field, to solve the problem of easy to fall off in the process of clamping in prior art ultra-thin skin, there is larger adsorption mark on surface.The ultra-thin airfoil skin clamping device of the application, including vacuum adsorption component, auxiliary adsorption unit and air extraction hole, the vacuum adsorption component is connected with the air extraction hole, the auxiliary adsorption unit is connected with the vacuum adsorption component, for transmitting the suction force generated by the vacuum adsorption component.The ultra-thin skin processing process method of the application, including the above-mentioned ultra-thin airfoil skin clamping device.The application can improve the adsorption fixing capacity of ultra-thin skin, prevent larger adsorption mark on the surface of ultra-thin skin, so as to improve the processing quality and processing precision of ultra-thin skin.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of skin processing, in particular to a super-thin airfoil skin clamping device and processing method. BACKGROUND

[0002] Super-thin skins have a wide range of applications in the field of aircraft. The use of super-thin skins can make the surface of the aircraft smoother, reduce air resistance, thereby improving the flight efficiency of the aircraft, reducing fuel consumption and playing a role in protecting the internal structure and equipment.

[0003] However, the manufacturing of super-thin skins requires extremely high precision. In the processing process, advanced numerical control processing technology and precision molds need to be used to ensure the dimensional accuracy and surface quality of the skin. In particular, in the clamping operation of super-thin skins, it is easy to cause deformation of super-thin skins, affecting the processing precision.

[0004] In the prior art, the conventional clamping method mainly uses a press plate bolt, which makes the super-thin skin prone to clamping deformation due to uneven stress. If magnetic adsorption is used, uniform clamping can be achieved, but it is easy to cause the super-thin skin to fall off during processing and cause large adsorption marks on the processed surface. SUMMARY

[0005] In view of the above analysis, the present application aims to provide a super-thin airfoil skin clamping device and processing method to solve the problem of easy falling off and large adsorption marks on the surface during the clamping process of super-thin skins in the prior art.

[0006] The purpose of the present application is mainly realized through the following technical solutions:

[0007] On the one hand, the present application provides a super-thin airfoil skin clamping device, comprising a vacuum adsorption assembly, an auxiliary adsorption unit and an air extraction hole, the vacuum adsorption assembly is connected with the air extraction hole, the auxiliary adsorption unit is connected with the vacuum adsorption assembly, and is used to transmit the suction force generated by the vacuum adsorption assembly.

[0008] Further, the vacuum adsorption assembly comprises an adsorption platform, an adsorption groove and an air extraction channel, the adsorption groove and the air extraction channel are arranged in the adsorption platform, and the adsorption groove is in communication with the air extraction hole through the air extraction channel.

[0009] Further, the auxiliary adsorption unit comprises an auxiliary adsorption support, a vacuum groove, an auxiliary adsorption groove and an adsorption air duct, one end of the auxiliary adsorption support is provided with the vacuum groove, the other end is provided with the auxiliary adsorption groove, and the vacuum groove is in communication with the auxiliary adsorption groove through the adsorption air duct.

[0010] Further, one end of the auxiliary adsorption support platform is placed on the adsorption platform, and the adsorption groove can transmit negative pressure adsorption force to the vacuum groove.

[0011] Further, the ultra-thin skin is placed at one end of the auxiliary adsorption groove of the auxiliary adsorption support platform, and the auxiliary adsorption groove is used to fix the ultra-thin skin.

[0012] Further, the auxiliary adsorption unit further comprises a sealing assembly, the sealing assembly comprises a first sealing ring, the first sealing ring is arranged around the auxiliary adsorption groove, and is used to maintain a sealed environment between the ultra-thin skin and the auxiliary adsorption groove.

[0013] Further, the vacuum adsorption assembly further comprises a sealing groove arranged between the adsorption grooves.

[0014] Further, the sealing assembly further comprises a second sealing ring arranged along the outer edge of the vacuum groove, and the second sealing ring can be inserted into the sealing groove.

[0015] Further, the groove width of the auxiliary adsorption groove is smaller than the groove width of the adsorption groove.

[0016] Further, the groove width of the auxiliary adsorption groove is determined by the following formula:

[0017]

[0018] In the formula, l is the groove width of the adsorption groove;

[0019] l' is the groove width of the auxiliary adsorption groove;

[0020] y' max is the maximum deformation height that the ultra-thin skin can allow;

[0021] y max is the maximum deformation height of the ultra-thin skin when the ultra-thin skin is adsorbed by the vacuum adsorption assembly.

[0022] In another aspect, the present application provides a processing method of an ultra-thin airfoil skin, which uses the above-mentioned ultra-thin airfoil skin clamping device to fix the ultra-thin skin. Further, the method comprises the following steps:

[0023] S1: using the vacuum adsorption assembly to pre-adsorb the ultra-thin skin;

[0024] S2: designing an auxiliary adsorption unit;

[0025] S3: manufacturing the auxiliary adsorption unit;

[0026] S4: using the auxiliary adsorption unit to fix the ultra-thin skin.

[0027] Furthermore, step S2 specifically includes:

[0028] S21: Measure the maximum deformation height y of the adsorption traces on the surface of the ultrathin skin. max ;

[0029] S22: Measure the width l of the adsorption tank and the adsorption area;

[0030] S23: Calculate the width l' of the auxiliary adsorption tank.

[0031] Furthermore, in step S23, specifically, the maximum allowable deformation height y' of the ultra-thin skin is determined based on the actual working conditions and manufacturing requirements. max According to the formula The maximum deformation height y of the adsorption marks on the surface of the ultrathin skin max The maximum allowable deformation height y' of the adsorption tank width l and the ultra-thin skin. max Substituting into the formula, the width l' of the auxiliary adsorption tank is calculated; the adsorption area of ​​the adsorption region composed of the auxiliary adsorption tank is determined according to the adsorption area when the vacuum adsorption component pre-adsorbs the ultrathin skin, so that the adsorption area of ​​the adsorption region composed of the auxiliary adsorption tank is equal to the adsorption area when the adsorption tank adsorbs the ultrathin skin.

[0032] Furthermore, step S4 specifically includes the following steps:

[0033] S41: Insert the second sealing ring into the sealing groove;

[0034] S42: Place the ultra-thin skin on the auxiliary adsorption support;

[0035] S43: Air is extracted through the vent hole to fix the ultra-thin skin;

[0036] S44: Stop evacuating the air vent and remove the ultra-thin skin.

[0037] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0038] (1) The ultra-thin wing skin clamping device provided by the present invention, by setting up a vacuum adsorption component, an auxiliary adsorption unit and an air extraction hole, transmits the generated suction force to the auxiliary adsorption unit through the vacuum adsorption component, and the auxiliary adsorption unit adsorbs the ultra-thin skin, which can stably adsorb the ultra-thin skin and prevent the ultra-thin skin from being desorbed. The first sealing ring set around the outer edge of the adsorption area formed by the auxiliary adsorption groove can maintain the sealed environment between the ultra-thin skin and the auxiliary adsorption groove. By inserting the second sealing ring into the sealing groove, the sealed environment between the auxiliary adsorption unit and the vacuum adsorption component can be maintained, thereby improving the adsorption and fixation ability of the ultra-thin skin and preventing the loss of negative pressure adsorption force during the transmission process.

[0039] (2) The processing process method of the ultra-thin airfoil skin provided by the application, in the step S3 of designing the auxiliary adsorption unit, the adsorption area of the auxiliary adsorption groove is equal to the adsorption area of the adsorption groove when the ultra-thin skin is adsorbed, so as to ensure that the ultra-thin skin is not desorbed when the auxiliary adsorption unit is used to fix the ultra-thin skin. The groove width of the auxiliary adsorption groove is determined according to the maximum deflection formula, so as to reduce the risk of the ultra-thin skin being adsorbed into the auxiliary adsorption groove by keeping the groove width of the auxiliary adsorption groove small, and reduce the deformation amount of the surface of the ultra-thin skin when it is adsorbed and fixed, so as to prevent the existence of large adsorption marks on the surface of the ultra-thin skin.

[0040] (3) The processing process method of the ultra-thin airfoil skin provided by the application, by designing the auxiliary adsorption unit, the auxiliary adsorption unit can ensure that the ultra-thin skin is not desorbed when it is adsorbed and fixed. Compared with the prior art, the adsorption area of the auxiliary adsorption groove and the groove width of the auxiliary adsorption groove are obtained by calculation, the design parameters of the auxiliary adsorption unit are obtained by calculation, the large adsorption marks on the surface of the ultra-thin skin can be prevented, so as to improve the processing quality and processing precision of the ultra-thin skin. When the ultra-thin airfoil skin clamping device is used to adsorb and fix the ultra-thin skin, the operation is simple, and the negative pressure adsorption force can be transmitted to the auxiliary adsorption groove through the adsorption groove and the adsorption air duct through the air exhaust hole, so as to adsorb the ultra-thin skin. The operation is simple, the structure is simple, and the stability and sealing performance are good.

[0041] In the application, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the application will be described in the subsequent description, and some advantages will become apparent from the description or be understood by implementing the application. The purposes and other advantages of the application can be realized and obtained from the specific embodiments and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0042] The drawings are only used to illustrate the specific application, and are not considered as limiting the application, and the same reference signs represent the same parts throughout the drawings.

[0043] Figure 1 It is the overall structure schematic diagram of the ultra-thin airfoil skin clamping device of embodiment 1 of the application;

[0044] Figure 2 It is the internal structure schematic diagram of the vacuum adsorption assembly of embodiment 1 of the application;

[0045] Figure 3 It is the internal structure schematic diagram of the auxiliary adsorption unit of embodiment 1 of the application;

[0046] Figure 4This is a schematic flowchart of the processing method for the ultra-thin wing skin according to Embodiment 2 of the present invention;

[0047] Figure 5 This is a flowchart illustrating step S2 of Embodiment 2 of the present invention;

[0048] Figure 6 This is a flowchart illustrating step S4 of Embodiment 2 of the present invention.

[0049] Figure label:

[0050] 1-Vacuum adsorption assembly; 11-Adsorption platform; 12-Sealing groove; 13-Adsorption groove; 14-Gas extraction channel; 2-Auxiliary adsorption unit; 21-Auxiliary adsorption support; 22-Vacuum groove; 23-Auxiliary adsorption groove; 24-Adsorption air channel; 25-Sealing assembly; 251-First sealing ring; 252-Second sealing ring; 3-Gas extraction hole; 4-Ultra-thin skin. Detailed Implementation

[0051] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of the present invention and are used together with the invention to illustrate the principles of the invention.

[0052] Example 1

[0053] This embodiment provides an ultra-thin wing skin clamping device for clamping ultra-thin wing skins or other types of ultra-thin skins, such as... Figure 1 As shown, it includes a vacuum adsorption component 1, an auxiliary adsorption unit 2, and an extraction port 3. The vacuum adsorption component 1 is connected to the extraction port 3, through which air can be extracted from the vacuum adsorption component 1. The auxiliary adsorption unit 2 is connected to the vacuum adsorption component 1 and is used to transmit the suction force generated by the vacuum adsorption component 1, thereby fixing the ultra-thin skin 4 with a thickness of 0.1mm to 0.5mm onto the auxiliary adsorption unit 2. Further, as... Figures 1-2 As shown, the vacuum adsorption assembly 1 includes an adsorption platform 11, a sealing groove 12, adsorption grooves 13, and an extraction channel 14. The adsorption grooves 13 and the extraction channel 14 are disposed within the adsorption platform 11. Multiple adsorption grooves 13 are configured, and each adsorption groove 13 is connected to an extraction port 3 via the extraction channel 14. The sealing grooves 12 are disposed between the adsorption grooves 13. Extraction through the extraction port 3 allows the extraction channel 14 to create a negative pressure adsorption force in the adsorption grooves 13.

[0054] like Figure 3As shown, the auxiliary adsorption unit 2 comprises an auxiliary adsorption support 21, a vacuum groove 22, auxiliary adsorption grooves 23 and an adsorption air duct 24. The auxiliary adsorption support 21 is provided with the vacuum groove 22 at one end and a plurality of auxiliary adsorption grooves 23 at the other end. The plurality of auxiliary adsorption grooves 23 form an adsorption area. The vacuum groove 22 is in communication with the auxiliary adsorption grooves 23 through the adsorption air duct 24. The end of the auxiliary adsorption support 21 provided with the vacuum groove 22 is placed on the adsorption platform 11 so that the vacuum groove 22 cooperates with the adsorption groove 13. The adsorption groove 13 can transmit negative pressure adsorption force to the vacuum groove 22. The auxiliary adsorption grooves 23 form an adsorption area for adsorbing and fixing the ultra-thin skin 4. The auxiliary adsorption grooves 23 form an adsorption area which cooperates with the ultra-thin skin 4. The vacuum groove 22 transmits the negative pressure adsorption force from the adsorption groove 13 to the auxiliary adsorption grooves 23 through the adsorption air duct 24, so that the ultra-thin skin 4 is adsorbed and fixed by the auxiliary adsorption grooves 23.

[0055] Further, the auxiliary adsorption unit 2 further comprises a sealing assembly 25. The sealing assembly 25 comprises a first sealing ring 251 and a second sealing ring 252. The first sealing ring 251 and the second sealing ring 252 are connected to the auxiliary adsorption support 21. The first sealing ring 251 is arranged around the outer edge of the adsorption area formed by the auxiliary adsorption grooves 23, and is used to maintain a sealed environment between the ultra-thin skin 4 and the auxiliary adsorption grooves 23. The second sealing ring 252 is arranged along the outer edge of the vacuum groove 22. The second sealing ring 252 can be inserted into the sealing groove 12, thereby maintaining a sealed environment between the auxiliary adsorption unit 2 and the vacuum adsorption assembly 1.

[0056] Preferably, the outer edge of the adsorption area formed by the auxiliary adsorption grooves 23 is provided with an adsorption sealing groove. The first sealing ring 251 is arranged in the adsorption sealing groove, thereby increasing the stability of the connection between the first sealing ring 251 and the auxiliary adsorption support 21.

[0057] Preferably, the size of the first sealing ring 251 is 2mm-4mm smaller than the outer edge of the ultra-thin skin 4, thereby improving the sealing effect between the ultra-thin skin 4 and the adsorption area formed by the auxiliary adsorption grooves 23.

[0058] Further, the groove width of the auxiliary adsorption grooves 23 is smaller than the groove width of the adsorption groove, thereby reducing the adsorption marks on the surface of the ultra-thin skin 4 while ensuring that the ultra-thin skin 4 is not desorbed.

[0059] When the groove width of the auxiliary adsorption grooves 23 is small, the auxiliary adsorption support 21 can provide better support for the ultra-thin skin 4, thereby avoiding the ultra-thin skin 4 being sucked into the auxiliary adsorption grooves 23 and causing large deformation on the surface of the ultra-thin skin 4.

[0060] Further, the groove width of the auxiliary adsorption grooves 23 is determined by the following formula:

[0061] According to the maximum deflection formula, the maximum deformation height of the ultra-thin skin 4 when the vacuum suction assembly 1 is used to suck the ultra-thin skin 4 is:

[0062]

[0063] The maximum deformation height of the ultra-thin skin 4 that can be allowed is:

[0064]

[0065] Through formula transformation, we get:

[0066]

[0067] In the formula, l is the groove width of the suction groove 13;

[0068] l' is the groove width of the auxiliary suction groove 23;

[0069] y' max The maximum deformation height of the ultra-thin skin 4 that can be allowed;

[0070] y max The maximum deformation height of the ultra-thin skin 4 when the vacuum suction assembly 1 is used to suck the ultra-thin skin 4;

[0071] F is the suction force;

[0072] E is the elastic modulus of the ultra-thin skin 4;

[0073] I is the moment of inertia;

[0074] It can be understood that E and I are the properties of the material itself, and for the ultra-thin skin 4 of the same material, the values of E and I are fixed constants.

[0075] For example, y' max = 0.02mm.

[0076] The auxiliary suction unit 2 is placed on the vacuum suction assembly 1, the second sealing ring 252 is inserted into the sealing groove 12, the vacuum suction assembly 1 is vacuumized using the air suction hole 3, and the suction groove 13 transmits the negative pressure suction force to the auxiliary suction groove 23 through the suction air duct 24 to suck the ultra-thin skin 4.

[0077] By setting the auxiliary suction unit 2, the maximum deformation height of the ultra-thin skin 4 can be controlled, the risk of the ultra-thin skin 4 being sucked into the auxiliary suction groove 23 is reduced under the premise of ensuring that the ultra-thin skin 4 is not desorbed, the deformation amount of the surface of the ultra-thin skin 4 when being sucked and fixed is reduced, thereby preventing the existence of large suction marks on the surface of the ultra-thin skin 4, and improving the apparent quality and flatness of the ultra-thin skin 4.

[0078] Embodiment 2

[0079] The embodiment provides a processing method of an ultrathin airfoil skin, adopts an ultrathin airfoil skin clamping device, as shown in the drawings, and comprises the following steps. Figure 4 The embodiment provides a processing method of an ultrathin airfoil skin, adopts an ultrathin airfoil skin clamping device, as shown in the drawings, and comprises the following steps.

[0080] S1: Pre-adsorbing the ultrathin skin 4 by using the vacuum adsorption assembly 1.

[0081] S2: Designing the auxiliary adsorption unit 2.

[0082] S3: Manufacturing the auxiliary adsorption unit 2.

[0083] S4: Fixing the ultrathin skin 4 by using the auxiliary adsorption unit 2.

[0084] In step S1, the ultrathin skin 4 is placed on the adsorption platform 11, the vacuum adsorption assembly 1 is exhausted through the exhaust hole 3, the ultrathin skin 4 is adsorbed and fixed in the adsorption groove 13, and the minimum adsorption force F that does not cause the ultrathin skin 4 to be desorbed is determined.

[0085] Further, as shown in the drawings, step S2 specifically comprises: Figure 5

[0086] S21: Measuring the maximum deformation height y of the adsorption trace on the surface of the ultrathin skin 4 max .

[0087] S22: Measuring the groove width l and the adsorption area of the adsorption groove 13.

[0088] S23: Calculating the groove width l' of the auxiliary adsorption groove 23.

[0089] In step S21, specifically, the vacuum adsorption assembly 1 is released from the adsorption and fixation of the ultrathin skin 4 by stopping the exhaust through the exhaust hole 3, the ultrathin skin 4 is taken off from the vacuum adsorption assembly 1, the adsorption trace on the surface of the ultrathin skin 4 is measured, and the maximum deformation height y of the adsorption trace on the surface of the ultrathin skin 4 max is obtained.

[0090] In step S22, the groove width l of the adsorption groove 13 is measured, and the adsorption area of the vacuum adsorption assembly 1 pre-adsorbing the ultrathin skin 4 is measured.

[0091] In step S23, specifically, the maximum deformation height y' max of the ultrathin skin 4 that can be allowed is determined according to actual working conditions and manufacturing requirements, the groove width l' of the auxiliary adsorption groove 23 is calculated according to the formula

[0092]

[0093] The maximum deformation height y of the adsorption trace on the surface of the ultrathin skin 4 max , the groove width l of the adsorption groove 13 and the maximum deformation height y' max ​Substitute into the formula, the calculation of the auxiliary adsorption tank 23 tank width l'; because the adsorption area determines the size of the adsorption force, according to the vacuum adsorption assembly 1 pre-adsorption of ultra-thin skin 4 when the adsorption area to determine the adsorption area of the auxiliary adsorption tank 23 composed of the adsorption area, so that the auxiliary adsorption tank 23 composed of the adsorption area of the adsorption area and the adsorption area of the adsorption tank 13 adsorption of ultra-thin skin 4, so as to ensure that the use of auxiliary adsorption unit 2 fixed ultra-thin skin 4 does not desorption.

[0094] In step S3, specifically, according to the size of the ultra-thin skin 4 and the auxiliary adsorption tank 23 tank width l' and the adsorption area of the vacuum adsorption assembly 1 pre-adsorption of ultra-thin skin 4 when the adsorption area to determine the shape and size of the auxiliary adsorption unit 2, get the design parameters of the auxiliary adsorption unit 2, according to the design parameters of the auxiliary adsorption unit 2 to make auxiliary adsorption unit 2.

[0095] Further, as shown in Figure 6 S4 specifically includes the following steps:

[0096] S41: the second sealing ring 252 is inserted into the sealing groove 12;

[0097] S42: the ultra-thin skin 4 is placed on the auxiliary adsorption platform 21;

[0098] S43: through the air hole 3, the ultra-thin skin 4 is fixed;

[0099] S44: stop the air hole 3, take off the ultra-thin skin 4.

[0100] In step S41, specifically, the second sealing ring 252 is inserted into the sealing groove 12, so that the auxiliary adsorption unit 2 is connected with the vacuum adsorption assembly 1, and the vacuum tank 22 and the adsorption tank 13 are kept in a sealed state.

[0101] In step S42, specifically, the adsorption sealing groove is arranged along the adsorption area composed of the auxiliary adsorption tank 23, the first sealing ring 251 is inserted into the adsorption sealing groove, the ultra-thin skin 4 is placed on the auxiliary adsorption platform 21, the position of the ultra-thin skin 4 corresponds to the adsorption area composed of the auxiliary adsorption tank 23, and the first sealing ring 251 is sealed between the ultra-thin skin 4 and the adsorption area composed of the auxiliary adsorption tank 23.

[0102] In step S43, specifically, the vacuum adsorption assembly 1 is pumped through the air hole 3, so that the negative pressure adsorption force generated by the vacuum adsorption assembly 1 is transmitted to the auxiliary adsorption tank 23 through the adsorption gas channel 24 from the adsorption tank 13 via the vacuum tank 22, and the ultra-thin skin 4 is adsorbed and fixed by the auxiliary adsorption tank 23.

[0103] In step S44, specifically, after the processing of the ultra-thin skin 4 is completed, the suction through the suction hole 3 is stopped, the auxiliary adsorption groove 23 stops adsorbing and fixing the ultra-thin skin 4, and the ultra-thin skin 4 is removed for the next processing procedure.

[0104] The processing method of the ultra-thin airfoil skin provided by the application controls the adsorption capacity of the auxiliary adsorption unit 2 and the maximum deformation height of the ultra-thin skin 4 through the design parameters of the auxiliary adsorption unit 2 obtained in step S2, prevents the ultra-thin skin 4 from producing large adsorption marks on the surface under the premise that the ultra-thin skin 4 does not desorb, and improves the processing quality and processing precision of the ultra-thin skin 4, which is simple to operate.

[0105] The above description is only the preferred embodiment of the application, but the protection scope of the application is not limited to this. Any changes or replacements within the technical range disclosed by the application can be easily thought of by those skilled in the art, and should be covered in the protection scope of the application.

Claims

1. An ultra-thin airfoil skin clamping device, characterized by, The device comprises a vacuum suction assembly (1), an auxiliary suction unit (2) and a suction hole (3), the vacuum suction assembly (1) is connected with the suction hole (3), the auxiliary suction unit (2) is connected with the vacuum suction assembly (1) and is used for transmitting the suction force generated by the vacuum suction assembly (1); The vacuum suction assembly (1) comprises a suction platform (11), a suction groove (13) and a suction passage (14), the suction groove (13) and the suction passage (14) are arranged in the suction platform (11), and the suction groove (13) is communicated with the suction hole (3) through the suction passage (14); The auxiliary suction unit (2) comprises an auxiliary suction support (21), a vacuum groove (22), an auxiliary suction groove (23) and a suction air duct (24), one end of the auxiliary suction support (21) is provided with the vacuum groove (22), the other end is provided with the auxiliary suction groove (23), and the vacuum groove (22) is communicated with the auxiliary suction groove (23) through the suction air duct (24); The groove width of the auxiliary suction groove (23) is smaller than that of the suction groove (13); The groove width of the auxiliary suction groove (23) is determined by the following formula: According to the maximum deflection formula, when the vacuum suction assembly (1) is used to suck the ultra-thin skin (4), the maximum deformation height of the ultra-thin skin (4) is ； The maximum deformation height that can be allowed by the ultra-thin skin (4) is ； Through formula transformation, we obtain: ； In the formula, - the width of the adsorption tank (13); - the width of the auxiliary adsorption channel (23); - maximum deformation height that the ultra-thin skin (4) can allow; - the maximum deformation height of the ultra-thin skin (4) when it is sucked by the vacuum suction assembly (1); - adsorption force; - the modulus of elasticity of the ultra-thin skin (4); I - moment of inertia; E and I are the properties of the material itself, and for the ultra-thin skin (4) made of the same material, the values of E and I are fixed constants.

2. The ultra-thin airfoil skin clamping device of claim 1, wherein, The end of the auxiliary suction support (21) provided with the vacuum groove (22) is placed on the suction platform (11), and the negative pressure suction force can be transmitted to the vacuum groove (22) through the suction groove (13).

3. The ultra-thin airfoil skin clamping device of claim 2, wherein, The ultra-thin skin (4) is placed at the end of the auxiliary suction support (21) provided with the auxiliary suction groove (23), and the auxiliary suction groove (23) is used to fix the ultra-thin skin (4).

4. The ultra-thin airfoil skin clamping device of claim 3, wherein, The auxiliary suction unit (2) further comprises a sealing assembly (25), the sealing assembly (25) comprises a first sealing ring (251), the first sealing ring (251) surrounds the auxiliary suction groove (23) and is used to maintain a sealed environment between the ultra-thin skin (4) and the auxiliary suction groove (23).

5. The ultra-thin airfoil skin clamping device of claim 4, wherein, The vacuum suction assembly (1) further comprises a sealing groove (12), and the sealing groove (12) is arranged between the suction grooves (13).

6. The ultra-thin airfoil skin clamping device of claim 5, wherein, The sealing assembly (25) further comprises a second sealing ring (252), the second sealing ring (252) is arranged along the outer edge of the vacuum groove (22), and the second sealing ring (252) can be inserted into the sealing groove (12).

7. A process for the manufacture of an ultra-thin airfoil skin, characterized in that, The ultra-thin skin (4) is fixed by using the ultra-thin airfoil skin clamping device according to any one of claims 1-6.

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