Arc-shaped skin clamping device

Abstract

The utility model relates to the technical field of machining, and discloses an arc-shaped skin clamping device which comprises a supporting base, a first pressing assembly and a second pressing assembly, a containing groove is formed in the supporting base, and an arc-shaped skin can be attached to the groove wall of the containing groove; the first pressing assembly comprises a first pressing piece extending in the length direction of the arc-shaped skin, and the first pressing piece is used for pressing the length side edge of the arc-shaped skin to the groove wall of the containing groove. The second pressing assembly comprises a second pressing piece extending in the bending direction of the arc-shaped skin, and the second pressing piece is located at the end, in the length direction, of the arc-shaped skin and used for pressing the arc-shaped side edge of the end of the arc-shaped skin to the groove wall of the containing groove. The arc-shaped skin can be firmly pressed on the groove wall of the containing groove no matter the arc-shaped skin is milled in the length direction or the bending direction of the arc-shaped skin, the arc-shaped skin is not prone to deformation, the milling precision of the arc-shaped skin is guaranteed, and the safety of the skin milling environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of skin processing, in particular to an arc-shaped skin clamping device. Background Art

[0002] In the fields of aviation, aerospace and nuclear power, skins are often used to surround the skeleton structure of aircraft, nuclear bombs and other devices to form the shell of aircraft, nuclear bombs and other machines.

[0003] When processing the skin, the skin must be fixed first, and then the skin is milled by a milling device. However, the skin used for aircraft, especially the skin used for the leading edge of the aircraft wing, is mostly a plate-like structure with large size, small thickness and curvature. During the milling process, the curved surface is not easy to be firmly clamped, which can easily cause the skin as a whole to vibrate or cause the skin to deform at the milling point, thereby affecting the processing accuracy of the skin and posing certain safety hazards. For this reason, the existing skin clamping devices mostly set their bases to a structure that is compatible with the curvature of the skin. In addition, some devices also clamp the skin to the base by vacuum adsorbing the skin from below and pressing the skin with a clamping member from above to prevent the skin from vibrating. However, the clamping effect is general, the cost of vacuum adsorption is high, and the milling point of the skin is not effectively fixed, and the problem of easy deformation of the skin cannot be effectively solved.

[0004] Therefore, there is an urgent need for a curved skin clamping device to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a curved skin clamping device, which can firmly clamp the curved skin, ensure the processing accuracy of the curved skin, and improve the safety of the milling environment.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Provided is a curved skin clamping device, comprising:

[0008] A support base is provided with a receiving groove, the groove wall of the receiving groove is curved in an arc shape, and the arc-shaped skin can fit with the groove wall of the receiving groove;

[0009] The clamping mechanism includes a first clamping assembly and a second clamping assembly which are arranged on a supporting base. The first clamping assembly includes a first clamping piece, which extends along the length direction of the arc-shaped skin and is used to clamp the length side of the arc-shaped skin against the groove wall of the accommodating groove; the second clamping assembly includes a second clamping piece, which extends along the bending direction of the arc-shaped skin and is located at one end of the arc-shaped skin along the length direction and is used to clamp the arc-shaped side of the end of the arc-shaped skin against the groove wall of the accommodating groove.

[0010] Optionally, a lifting mechanism and a support beam are provided on the support base, the support beam extends along the length direction of the arc-shaped skin, the first clamping assembly and the second clamping assembly are both arranged on the support beam, and the output end of the lifting mechanism is connected to the support beam for driving the support beam to lift and lower so that the first clamping assembly and the second clamping assembly are close to or away from the receiving groove.

[0011] Optionally, the first clamping assembly also includes a first driving member, the first driving member having two output ends, two first clamping members are provided, the two first clamping members are symmetrically arranged along the width direction of the arc-shaped skin, and the two output ends of the first driving member are connected to the two first clamping members one by one, so as to drive the two first clamping members close to or away from the corresponding two length sides on the arc-shaped skin.

[0012] Optionally, the first clamping assembly also includes a first mounting bracket, a first end of the first mounting bracket is rotatably connected to the support beam, a second end of the first mounting bracket is fixedly connected to the first clamping member, and an output end of the first driving member is connected to the first mounting bracket.

[0013] Optionally, the second clamping assembly also includes multiple second driving members, which are arranged at intervals along the extension direction of the second clamping member, and the output end of each second driving member can contact the second clamping member to drive the second clamping member to press the arc-shaped skin against the groove wall of the accommodating groove.

[0014] Optionally, the second clamping assembly also includes a second mounting frame arranged on the support beam, the second clamping member is fixed on the second mounting frame, a plurality of second driving members are installed on the second mounting frame at intervals, and the plurality of second driving members are located on the side of the second clamping member facing away from the arc-shaped skin.

[0015] Optionally, the clamping mechanism also includes a third clamping member, which extends in the vertical direction. One end of the third clamping member is fixedly connected to the support beam, and the other end of the third clamping member can contact the arc-shaped skin and press the arc-shaped skin against the groove wall of the accommodating groove.

[0016] Optionally, the lifting mechanism includes a rotating drive member, a transmission assembly, a guide member and a lifting member, the rotating drive member and the guide member are both arranged on a supporting base, the lifting member extends in a vertical direction and is slidably connected to the guide member in a vertical direction, one end of the lifting member is fixedly connected to the support beam, and the other end of the lifting member is connected to the output end of the rotating drive member through the transmission assembly, and the rotating drive member is used to drive the transmission assembly to drive the lifting member to move in the vertical direction.

[0017] Optionally, the transmission assembly includes a driving gear, a driven gear and a transmission shaft, the lifting member includes a lifting cylinder, the transmission shaft extends in a vertical direction, one end of which is rotatably connected to a support base, and the other end of which extends into the lifting cylinder and cooperates with a thread of the lifting cylinder, the guide member includes a guide cylinder, the guide cylinder is coaxially and spaced outside the transmission shaft, the lifting cylinder is coaxially arranged in the guide cylinder, and is slidably connected to the guide cylinder in a vertical direction, the driving gear is arranged at the output end of the rotating driving member, the driven gear is coaxially fixed to the transmission shaft, and the driven gear is meshed with the driving gear.

[0018] Optionally, the supporting base includes a fixed seat, a movable frame, a plurality of arcuate plates, a first side plate and a second side plate. The movable frame is movably disposed on the fixed seat along the length direction of the arcuate skin. The plurality of arcuate plates are arranged on the movable frame at intervals along the length direction of the arcuate skin. The arcuate spaces of the plurality of arcuate plates are arranged to form a receiving groove. The first side plate and the second side plate both extend along the length direction of the arcuate skin. The first end of each arcuate plate is connected to the first side plate, and the second end of each arcuate plate is connected to the second side plate. The side surfaces of the first side plate and the second side plate facing the receiving groove are flush with the inner arcuate surface of the arcuate plate.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The arc-shaped skin clamping device provided by the utility model has an arc-shaped receiving groove, so that the receiving groove and the arc-shaped skin can fit closely, which is beneficial to improving the pressing effect of the pressing mechanism on the arc-shaped skin. The first pressing member extends along the length direction of the arc-shaped skin, and can press the length side of the arc-shaped skin against the groove wall of the receiving groove, so that when the length side of the arc-shaped skin is milled, the length side of the arc-shaped skin can be clamped by the groove wall of the receiving groove and the first pressing member without vibration and deformation; the second pressing member extends along the bending direction of the arc-shaped skin, and is located at one end along the length direction of the arc-shaped skin, and the arc-shaped side of the end of the arc-shaped skin can be pressed against the groove wall of the receiving groove by the second pressing member, so that when the milling device mills the end of the arc-shaped skin, the arc-shaped side of the end of the arc-shaped skin can be clamped by the groove wall of the receiving groove and the second pressing member without vibration and deformation. By setting the first pressing member and the second pressing member, when the arc-shaped skin is milled along the length direction or the bending direction of the arc-shaped skin, the arc-shaped skin can be firmly pressed against the groove wall of the accommodating groove by the pressing mechanism, and is not easy to deform, thereby ensuring the milling accuracy of the arc-shaped skin. In addition, during the milling process of the arc-shaped skin, the arc-shaped skin is always in a clamped state and will not move, so it will not collide with the surrounding milling devices and workers, thereby improving the safety of the milling environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the arc-shaped skin clamping device provided in this embodiment when the arc-shaped skin is not clamped;

[0022] Figure 2 A schematic diagram of the structure of the arc-shaped skin clamping device provided in this embodiment when clamping the arc-shaped skin;

[0023] Figure 3 A schematic structural diagram of an arc-shaped skin clamped by the arc-shaped skin clamping device provided in this embodiment;

[0024] Figure 4 A cross-sectional view of the support beam and lifting mechanism of the arc-shaped skin clamping device provided in this embodiment;

[0025] Figure 5 A schematic structural diagram of a first clamping assembly of the arc-shaped skin clamping device provided in this embodiment;

[0026] Figure 6 A schematic diagram of the connection between the first pressing member and the first mounting frame of the arc-shaped skin clamping device provided in this embodiment;

[0027] Figure 7 for Figure 1 The enlarged view of point A in the middle;

[0028] Figure 8 A schematic diagram of the structure of the second clamping assembly of the arc-shaped skin clamping device provided in this embodiment;

[0029] Fig. 9 A schematic diagram of the structure of the support base of the arc-shaped skin clamping device provided in this embodiment (with the drive motor hidden);

[0030] Fig.10 A schematic structural diagram of the support base of the arc-shaped skin clamping device provided in this embodiment.

[0031] in:

[0032] 100, curved skin;

[0033] 1. Support base; 11. Accommodating groove; 12. Fixed seat; 121. Driving motor; 13. Moving frame; 131. Moving beam; 132. Support seat; 1321. Right-angle support seat; 1322. U-shaped support seat; 133. Connecting rod; 14. Arc plate; 141. Connecting part; 15. First side plate; 16. Second side plate;

[0034] 2. First pressing assembly; 21. First pressing member; 211. Connecting ear; 22. First driving member; 231. First rotating rod; 2311. Ear hole 1; 232. Second rotating rod; 233. Connecting rod 1; 234. Connecting rod 2;

[0035] 3. Second pressing assembly; 31. Second pressing member; 32. Second driving member; 331. Connecting seat; 332. V-shaped plate; 333. Connecting plate;

[0036] 4. Lifting mechanism; 41. Rotating driving member; 42. Guide member; 43. Lifting member;

[0037] 5. Support beam; 51. Connecting ear plate; 52. Axle pin;

[0038] 6. Press the rod. DETAILED DESCRIPTION

[0039] It should be understood that, in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0041] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0042] like Figures 1 to 10 As shown, the arc-shaped skin clamping device provided in this embodiment relates to the field of skin processing technology, and can firmly clamp the arc-shaped skin 100, ensure the processing accuracy of the arc-shaped skin 100, and improve the safety of the milling environment. The arc-shaped skin clamping device includes a support base 1 and a clamping mechanism.

[0043] See also Figure 1 , Figure 2 , Figure 5 and Figure 8, a receiving groove 11 is arranged on the support base 1, and the groove wall of the receiving groove 11 is curved, and the curved skin 100 can fit with the groove wall of the receiving groove 11; the clamping mechanism includes a first clamping assembly 2 and a second clamping assembly 3 arranged on the support base 1, the first clamping assembly 2 includes a first clamping piece 21, the first clamping piece 21 extends along the length direction of the curved skin 100, and the first clamping piece 21 is used to press the length side of the curved skin 100 against the groove wall of the receiving groove 11; the second clamping assembly 3 includes a second clamping piece 31, the second clamping piece 31 extends along the bending direction of the curved skin 100, and the second clamping piece 31 is located at one end of the curved skin 100 along the length direction, and is used to press the curved side of the end of the curved skin 100 against the groove wall of the receiving groove 11. Among them, the length direction of the curved skin 100 is Figure 1 The length side of the arc skin 100 refers to the side of the arc skin 100 to be milled along the X direction, and the bending direction of the arc skin 100 is Figure 1 In the M direction, the arcuate side of the arcuate skin 100 refers to the side of the arcuate skin 100 to be milled along the M direction.

[0044] In the arc-shaped skin clamping device provided in this embodiment, the receiving groove 11 is curved in an arc shape, so that the receiving groove 11 and the arc-shaped skin 100 can fit tightly, which is beneficial to improving the clamping effect of the clamping mechanism on the arc-shaped skin 100. The first pressing piece 21 extends along the length direction of the arc-shaped skin 100, and can press the length side of the arc-shaped skin 100 against the groove wall of the accommodating groove 11, so that when the length side of the arc-shaped skin 100 is milled, the length side of the arc-shaped skin 100 can be clamped by the groove wall of the accommodating groove 11 and the first pressing piece 21 without vibrating or being deformed; the second pressing piece 31 extends along the bending direction of the arc-shaped skin 100, and is located at one end along the length direction of the arc-shaped skin 100, and the arc-shaped side of the end of the arc-shaped skin 100 can be pressed against the groove wall of the accommodating groove 11 by the second pressing piece 31, so that when the milling device mills the end of the arc-shaped skin 100, the arc-shaped side of the end of the arc-shaped skin 100 can be clamped by the groove wall of the accommodating groove 11 and the second pressing piece 31 without vibrating or being deformed. By setting the first pressing member 21 and the second pressing member 31, when the arc-shaped skin 100 is milled along the length direction or the bending direction of the arc-shaped skin 100, the arc-shaped skin 100 can be firmly pressed against the groove wall of the accommodating groove 11 by the pressing mechanism, and is not easily deformed, thereby ensuring the milling accuracy of the arc-shaped skin 100. In addition, during the milling process of the arc-shaped skin 100, the arc-shaped skin 100 is always in a clamped state and will not move, and will not collide with the surrounding milling devices and workers, thereby improving the safety of the milling environment.

[0045] In some embodiments, second clamping members 31 may be provided at both ends of the arc-shaped skin 100 along the length direction to further improve the clamping effect of the arc-shaped skin 100 and fully ensure the processing accuracy of the arc-shaped skin 100 .

[0046] In some embodiments, one or more groups of first pressing assemblies 2 may be provided according to the length of the arc-shaped skin 100. When multiple groups of first pressing assemblies 2 are provided, the multiple groups of first pressing assemblies 2 are arranged at intervals along the length direction of the arc-shaped skin 100, and the spacing between two adjacent groups of first pressing assemblies 2 shall not exceed a preset spacing. The preset spacing may be, but is not limited to, 20 mm, 30 mm, or 50 mm, as long as the two adjacent groups of first pressing assemblies 2 do not affect each other when pressing the arc-shaped skin 100 and the multiple groups of first pressing assemblies 2 can press the length side of the arc-shaped skin 100 against the groove wall of the accommodating groove 11.

[0047] For example, see Figure 1 and Figure 3 The arc-shaped skin 100 to be clamped in this embodiment is U-shaped and is used for the leading edge of an aircraft wing. Correspondingly, the receiving groove 11 is also set to be U-shaped.

[0048] In an alternative embodiment, see Figure 1 , Figure 2 and Figure 4 The support base 1 is provided with a lifting mechanism 4 and a support beam 5. The support beam 5 extends along the length direction of the arc-shaped skin 100. The first clamping assembly 2 and the second clamping assembly 3 are both provided on the support beam 5. The output end of the lifting mechanism 4 is connected to the support beam 5, and is used to drive the support beam 5 to lift and lower, so that the first clamping assembly 2 and the second clamping assembly 3 are close to or away from the receiving groove 11. Such a configuration enables the first clamping assembly 2 and the second clamping assembly 3 to be close to or away from the receiving groove 11 at the same time, which is convenient for placing the arc-shaped skin 100 in the receiving groove 11 and enabling the first clamping assembly 2 and the second clamping assembly 3 to perform a clamping operation on the arc-shaped skin 100. Moreover, the support beam 5 can support the first clamping assembly 2 and the second clamping assembly 3, so that the first clamping assembly 2 and the second clamping assembly 3 are stably arranged on the support base 1.

[0049] Specifically, when the lifting mechanism 4 drives the support beam 5 to rise, the first clamping assembly 2 and the second clamping assembly 3 rise together with the support beam 5, and gradually move away from the receiving groove 11. At this time, the arc-shaped skin 100 can be taken out of the receiving groove 11 or the arc-shaped skin 100 can be placed in the receiving groove 11; when the lifting mechanism 4 drives the support beam 5 to descend, the first clamping assembly 2 and the second clamping assembly 3 descend together with the support beam 5, and gradually approach the receiving groove 11, so that the first clamping assembly 2 and the second clamping assembly 3 can perform a clamping operation on the arc-shaped skin 100, so that the clamping device only occupies a small space to allow the first clamping assembly 2 and the second clamping assembly 3 to approach or move away from the receiving groove 11.

[0050] Optionally, see Figure 1 and Figure 4 In this embodiment, the lifting mechanism 4 includes a rotary drive member 41, a transmission assembly, a guide member 42 and a lifting member 43. The rotary drive member 41 and the guide member 42 are both arranged on the support base 1. The lifting member 43 extends in the vertical direction and is slidably connected to the guide member 42 in the vertical direction. One end of the lifting member 43 is fixedly connected to the support beam 5, and the other end of the lifting member 43 is connected to the output end of the rotary drive member 41 through the transmission assembly. The rotary drive member 41 is used to drive the transmission assembly to drive the lifting member 43 to move in the vertical direction. Since the lifting member 43 is slidably connected to the guide member 42 in the vertical direction, the lifting member 43 can only move linearly in the vertical direction and cannot rotate, thereby stably driving the support beam 5 to rise and fall.

[0051] Specifically, in this embodiment, the transmission assembly includes a driving gear, a driven gear and a transmission shaft. The lifting member 43 includes a lifting cylinder. The transmission shaft extends in the vertical direction, one end of which is rotatably connected to the support base 1, and the other end of which extends into the lifting cylinder and cooperates with the lifting cylinder thread. The guide member 42 includes a guide cylinder, which is coaxial and spaced outside the transmission shaft. The lifting cylinder is coaxially arranged in the guide cylinder and slidably connected to the guide cylinder in the vertical direction. The driving gear is arranged at the output end of the rotating driving member, and the driven gear is coaxially fixed to the transmission shaft, and the driven gear is meshed with the driving gear. The rotating driving member 41 drives the driving gear to drive the driven gear to rotate, and the transmission shaft rotates with the driven gear, so that the lifting cylinder that cooperates with the transmission shaft thread can slide in the vertical direction relative to the guide cylinder, thereby realizing the lifting and lowering of the support beam 5. The setting of the transmission assembly enables the lifting member 43 to move stably in the vertical direction, and the moving distance is precisely controllable, thereby improving the stability and accuracy of the movement of the support beam 5. Among them, the vertical direction is Figure 1 The Z direction in .

[0052] For example, the guide cylinder and the lifting cylinder can be slidably connected via a sliding groove and a sliding block, and circumferential limitation between the lifting cylinder and the guide cylinder can be achieved; or the lifting cylinder is slidably connected to the guide cylinder via a linear bearing.

[0053] In other embodiments, a driving pulley and a driven pulley may be used to connect the rotary drive member 41 and the transmission shaft, and the driving pulley drives the driven pulley to rotate via a belt.

[0054] For example, in this embodiment, the rotary drive member 41 is a motor, and the transmission shaft is a screw rod adapted to the thread on the inner wall of the lifting cylinder. The stability of the lifting cylinder can be further improved by rotating with the thread.

[0055] In another optional embodiment, a translation mechanism and a support beam 5 are provided on the support base 1, the support beam 5 extends along the length direction of the arc-shaped skin 100, the first clamping assembly 2 and the second clamping assembly 3 are both provided on the support beam 5, and the output end of the translation mechanism is connected to the support beam 5, and is used to drive the support beam 5 to reciprocate along the length direction of the arc-shaped skin 100, so that the first clamping assembly 2 and the second clamping assembly 3 are close to or away from the receiving groove 11. With such a configuration, the clamping device of this embodiment can be applied to the situation where the height of the processing workshop is limited and the support beam 5 does not have enough space to move in the vertical direction.

[0056] Specifically, a slide rail extending along the length direction of the arc-shaped skin 100 is provided on the support base 1, and the translation mechanism includes a connecting member 1, a slider and a translation driving member. The connecting member 1 extends in the vertical direction ( Figure 1 The first clamping assembly 2 and the second clamping assembly 3 are connected to each other along the slide rail, and one end of the first clamping assembly 2 and the second clamping assembly 3 are connected to each other along the slide rail. The first clamping assembly 2 and the second clamping assembly 3 are connected to each other along the slide rail, and the slide rail is used to drive the slide rail to slide in the slide rail, so that the support beam 5 can translate relative to the accommodating groove 11, thereby driving the first clamping assembly 2 and the second clamping assembly 3 to move along the slide rail, thereby realizing that the first clamping assembly 2 and the second clamping assembly 3 are close to or away from the accommodating groove 11.

[0057] Illustratively, in this embodiment, the translation driving member may be a cylinder, and a piston rod of the cylinder is connected to a slider to drive the slider to reciprocate along the length direction of the arc-shaped skin 100 .

[0058] Furthermore, the support beam 5 is a hollow structure, which can not only reduce the energy output by the lifting mechanism 4 or the translation mechanism to drive the support beam 5 to move, but also provide an installation space for the connection between the first clamping assembly 2 and the second clamping assembly 3 and the support beam 5.

[0059] Optionally, see Figure 1 , Figure 2 and Figure 5 The first clamping assembly 2 also includes a first driving member 22. The first driving member 22 has two output ends. Two first clamping members 21 are provided. The two first clamping members 21 are symmetrically arranged along the width direction of the arc-shaped skin 100. The two output ends of the first driving member 22 are connected to the two first clamping members 21 in a one-to-one correspondence, and are used to drive the two first clamping members 21 to approach or move away from the two corresponding length sides of the arc-shaped skin 100. With such a configuration, the two length sides of the arc-shaped skin 100 can be simultaneously pressed against the groove wall of the accommodating groove 11, which can avoid the movement of the arc-shaped skin 100 in the accommodating groove 11 when the length sides of the arc-shaped skin 100 are pressed one by one, and can also improve the clamping efficiency of the arc-shaped skin 100. Among them, the width direction of the arc-shaped skin 100 is Figure 1 in the Y direction.

[0060] Exemplarily, in this embodiment, the first driving member 22 is an oil cylinder or a gas cylinder with double piston rods, each piston rod is connected to each first clamping member 21 in a one-to-one correspondence, and the oil cylinder or the gas cylinder can drive two piston rods at the same time to improve the clamping efficiency of the first clamping assembly 2. Specifically, when the piston rod is extended relative to the oil cylinder or the gas cylinder, the two symmetrically arranged first clamping members 21 move away from each other and gradually approach the two length sides of the arc-shaped skin 100, thereby clamping the arc-shaped skin 100; when the piston rod is retracted relative to the oil cylinder or the gas cylinder, the two symmetrically arranged first clamping members 21 move closer to each other and gradually move away from the two length sides of the arc-shaped skin 100, thereby releasing the clamping of the arc-shaped skin 100.

[0061] Optionally, see Figure 1 , Figure 2 and Figure 5 The first clamping assembly 2 also includes a first mounting frame, a first end of the first mounting frame is rotatably connected to the support beam 5, a second end of the first mounting frame is fixedly connected to the first clamping member 21, and an output end of the first driving member 22 is connected to the first mounting frame. When the first clamping member 21 is raised and lowered with the support beam 5, the two symmetrically arranged first clamping members 21 are spaced apart along the width direction of the arc-shaped skin 100 ( Figure 1 The distance in the Y direction (in the Y direction) gradually increases or decreases. At this time, the first mounting frame is rotated relative to the support beam 5, so that the first driving member 22 can adjust the distance between the two first pressing members 21. The first end and the second end are the two ends of the first mounting frame.

[0062] See also Figure 1 , Figure 2 and Figure 5 The side of the first pressing member 21 in contact with the arc-shaped skin 100 is a plane, and the plane can fit tightly with the length side of the arc-shaped skin 100 to ensure the pressing effect on the length side of the arc-shaped skin 100.

[0063] In this embodiment, refer to Figure 1 , Figure 2 and Figure 5Each group of first clamping components 2 is provided with two first mounting frames, and the two first mounting frames are used to install two first clamping members 21 respectively. Each first mounting bracket includes a first rotating rod 231, a second rotating rod 232 and a connecting rod 233. The first rotating rod 231 and the second rotating rod 232 are respectively arranged at the two ends of the first clamping member 21, and the first rotating rod 231 and the second rotating rod 232 are both rotatably connected to the support beam 5, so that both ends of the first clamping member 21 are constrained, thereby ensuring the stability of the first clamping member 21, and also facilitating the clamping effect of the first clamping member 21 on the arc-shaped skin 100; one end of the connecting rod 233 is connected to the first rotating rod 231, and the other end is connected to the second rotating rod 232, and the output end of the first driving member 22 is rotatably connected to the connecting rod 233. Such a configuration can enable the output end of the first driving member 22 to adapt to the rotation of the first rotating rod 231 and the second rotating rod 232 relative to the support beam 5, thereby preventing interference between the first driving member 22 and the first mounting bracket, and ensuring smooth rotation of the first mounting bracket.

[0064] Further, see Figure 5 and Figure 6 A connecting ear 211 is also provided on the first clamping member 21, and the first mounting frame also includes a second connecting rod 234, the second connecting rod 234 passes through the connecting ear 211, and one end of the second connecting rod 234 is fixedly connected to the first rotating rod 231, and the other end is fixedly connected to the second rotating rod 232, so as to connect the first clamping member 21 with the first rotating rod 231 and the second rotating rod 232.

[0065] In other embodiments, each first mounting bracket may also include only one third rotating rod, the first end of the third rotating rod is rotatably connected to the support beam 5, the second end of the third connecting rod is fixedly connected to the first clamping member 21 via the connecting ear 211 and the connecting rod 234, and the output end of the first driving member 22 can be rotatably connected to the third rotating rod via parts such as a pin shaft.

[0066] For example, see Figure 7 The side wall of the support beam 5 is provided with a connecting ear plate 51, and the connecting ear plate 51 is provided with an axle pin 52, and the first mounting frame is rotatably connected to the connecting ear plate 51 through the axle pin 52. Specifically, the first end of the first rotating rod 231 is provided with an ear hole 1 2311, and the connecting ear plate 51 is provided with an ear hole 2, and the pin body of the axle pin 52 passes through the ear hole 1 2311 and the ear hole 2, and the pin cap of the axle pin 52 abuts against the connecting ear plate 51, and the pin passes through the axle pin hole on the pin body, so as to rotatably connect the connecting ear plate 51 with the first rotating rod 231. The connection method between the second rotating rod 232 and the connecting ear plate 51 is the same as the connection method between the first rotating rod 231 and the connecting ear plate 51.

[0067] Optionally, see Figure 1 , Figure 2 and Figure 8The second pressing assembly 3 further includes a plurality of second driving members 32, which are arranged at intervals along the extension direction of the second pressing member 31, and the output end of each second driving member 32 can contact the second pressing member 31 to drive the second pressing member 31 to press the arc-shaped skin 100 against the groove wall of the accommodating groove 11. With such an arrangement, the clamping device of this embodiment can clamp the arc-shaped skin 100 along the bending direction of the arc-shaped skin 100, thereby ensuring the clamping effect of the arc-shaped skin 100 and the processing accuracy of the arc-shaped skin 100.

[0068] Exemplarily, in this embodiment, the second driving member 32 is a cylinder. When the cylinder is working, the piston rod of the cylinder moves and gradually contacts the second pressing member 31 to press the second pressing member 31 against the arc-shaped skin 100 .

[0069] Optionally, see Figure 1 , Figure 2 and Figure 8 The second clamping assembly 3 further includes a second mounting frame arranged on the support beam 5, a second clamping member 31 is fixed on the second mounting frame, a plurality of second driving members 32 are installed on the second mounting frame at intervals, and the plurality of second driving members 32 are located on the side of the second clamping member 31 facing away from the arc-shaped skin 100. The second mounting frame is provided to facilitate the installation of the plurality of second driving members 32, and can also connect the second clamping assembly 3 with the support beam 5, so as to facilitate the movement of the second clamping assembly 3, thereby improving the clamping efficiency of the arc-shaped skin 100.

[0070] For example, see Figure 1 , Figure 2 and Figure 8 In this embodiment, the second mounting frame includes a connecting seat 331 and a V-shaped plate 332 arranged on the connecting seat. The side of the connecting seat 331 facing away from the V-shaped plate 332 is an arc surface, and the arc surface is in contact with and fixedly connected to the second clamping member 31. Multiple second driving members 32 are all installed and fixed on the side of the V-shaped plate 332 facing the second clamping member 31, and multiple second driving members 32 are symmetrically arranged on the V-shaped plate 332 with the connecting seat 331 as the center, so as to ensure that the end side edges of the arc-shaped skin 100 are uniformly stressed. Furthermore, a connecting plate 333 is arranged in the groove in the middle of the V-shaped plate 332, and the connecting plate 333 extends along the Y direction. The connecting plate 333 is fixedly connected to the top surface of the support beam 5 by a screw, thereby realizing the connection between the second clamping assembly 3 and the support beam 5. Specifically, the rod of the bolt passes through the connecting plate 333 and the top surface of the support beam 5, the head of the bolt abuts against the top surface of the connecting plate 333 or the support beam 5, and the nut is threadedly connected to the end of the screw rod away from the bolt head to fix the connecting plate 333 to the top surface of the support beam 5.

[0071] Optionally, the pressing mechanism further includes a third pressing member, which extends in the vertical direction, one end of which is fixedly connected to the support beam 5, and the other end of which can contact the arc-shaped skin 100 and press the arc-shaped skin 100 against the groove wall of the receiving groove 11. The third pressing member works together with the first pressing member 21 and the second pressing member 31, so that the arc-shaped skin 100 can be firmly pressed against the receiving groove 11 in multiple directions, preventing the arc-shaped skin 100 from vibrating or deforming during milling, and ensuring the milling accuracy of the arc-shaped skin 100.

[0072] See also Figure 1 and Figure 2 In this embodiment, the third pressing member is a plurality of pressing rods 6, and the plurality of pressing rods 6 are fixed on the support beam 5 at intervals. Specifically, one end of the pressing rod 6 is fixedly connected to the bottom surface of the support beam 5, and the other end of the pressing rod 6 is provided with rubber to prevent the pressing rod 6 from hard contact with the arc-shaped skin 100, and prevent the arc-shaped skin 100 from being damaged during the pressing process. Moreover, the arc-shaped skin 100 is not easy to be deformed in the horizontal direction ( Figure 1 When the support beam 5 rises, the plurality of clamping rods 6 rise together with the support beam 5, gradually moving away from the arc-shaped skin 100, and relaxing the restriction on the arc-shaped skin 100; when the support beam 5 falls, the plurality of clamping rods 6 fall together with the support beam 5, gradually approaching the arc-shaped skin 100, and the end of the clamping rod 6 provided with rubber will contact the arc-shaped skin 100 and press the arc-shaped skin 100.

[0073] Optionally, see Figure 1 , Figure 2 and Fig. 9The support base 1 includes a fixed seat 12, a movable frame 13, a plurality of arc-shaped plates 14, a first side plate 15 and a second side plate 16. The movable frame 13 is movably arranged on the fixed seat 12 along the length direction of the arc-shaped skin 100. The plurality of arc-shaped plates 14 are arranged on the movable frame 13 at intervals along the length direction of the arc-shaped skin 100. The arc-shaped spaces of the plurality of arc-shaped plates 14 are enclosed to form a receiving groove 11, and the inner arc surface of the arc-shaped plate 14 is the arc-shaped groove wall of the receiving groove 11. The first side panel 15 and the second side panel 16 both extend along the length direction of the arc-shaped skin 100, the first end of each arc-shaped panel 14 is connected to the first side panel 15, the second end of each arc-shaped panel 14 is connected to the second side panel 16, and the side faces of the first side panel 15 and the second side panel 16 facing the accommodating groove 11 are both flush with the inner arc surface of the arc-shaped panel 14, so that the two length side edges of the arc-shaped skin 100 can correspond to the inner side faces of the first side panel 15 and the inner side faces of the second side panel 16, respectively. The movable frame 13 can move relative to the fixed seat 12, so that the clamping device as a whole, except for the fixed seat 12, can move along the length direction of the arc-shaped skin 100 to approach or move away from the milling device, which can be used in situations where the position of the milling device is fixed and the milling range is limited. Among them, the first end and the second end of the arc-shaped panel 14 refer to the arc-shaped panel 14 along its bending direction ( Figure 1 Both ends of the M direction).

[0074] Specifically, after the arc-shaped skin 100 is placed in the accommodating groove 11, the two first clamping members 21 can respectively press the two length sides of the arc-shaped skin 100 against the inner side surfaces of the first side panel 15 and the inner side surfaces of the second side panel 16. Since the first side panel 15 and the second side panel 16 both extend along the length direction of the arc-shaped skin 100, the length sides of the arc-shaped skin 100 can be effectively supported in the entire length direction, thereby preventing the length sides of the arc-shaped skin 100 from being deformed during the milling process.

[0075] See also Figure 2 and Fig. 9 In this embodiment, the mobile frame 13 includes a mobile beam 131, a support seat 132 and a connecting rod 133. The mobile beam 131 is slidably connected to the fixed seat 12. A driving motor 121 is provided on the fixed seat 12. The output end of the driving motor 121 is transmission-connected with the mobile beam 131 to drive the mobile beam 131 to slide relative to the fixed seat 12. The supporting seat 132 is fixed on the mobile beam 131, and two supporting seats 132 are arranged at intervals. The connecting rod 133 is fixed on the two supporting seats 132, and the connecting rod 133 extends along the length direction of the arc skin 100. An arc plate 14 is respectively installed and fixed at both ends of the connecting rod 133. The two arc plates 14 are respectively used to support the two ends of the arc skin 100 along the X direction. The remaining arc plates 14 are installed on the two supporting seats 132. The part of the arc plates 14 is used to support the middle position of the arc skin 100 to improve the support stability of the arc skin 100.

[0076] In other embodiments, one or more support seats 132 may be provided, and the number of support seats 132 to be provided is determined according to the length of the arc-shaped skin 100 .

[0077] See also Figure 2 , Fig. 9 and Fig.10 , the plurality of arc-shaped plates 14 assembled on the support seat 132 include a connecting portion 141, and the connecting portion 141 is clamped in the support seat 132 to fix the arc-shaped plates 14. Specifically, two arc-shaped plates 14 are fixed on each support seat 132, and each support seat 132 includes two right-angle support seats 1321 and a U-shaped support seat 1322, and the U-shaped support seat 1322 is located between the two right-angle support seats 1321, and the connecting portion 141 is clamped between the right-angle support seat 1321 and the U-shaped support seat 1322. Further, a stiffening plate can be provided on the right-angle support seat 1321 and the U-shaped support seat 1322 to increase the overall strength of the support seat 132, so as to support the arc-shaped plates 14 more stably.

[0078] Optionally, multiple positioning members are provided on the first end and the second end of the multiple arc plates 14 to locate the placement of the arc skin 100 in the receiving groove 11, so that the arc skin 100 can be accurately placed in the receiving groove 11, which facilitates the subsequent pressing operation and milling operation of the arc skin 100, thereby improving the processing accuracy of the arc skin 100.

[0079] Specifically, a plurality of positioning holes 1 are provided on the arc skin 100, and a positioning hole 2 is provided on the first end and the second end of each arc plate 14. The plurality of positioning holes 2 are arranged correspondingly to the plurality of positioning holes 1, and the positioning pieces are inserted into the corresponding positioning holes 1 and 2.

[0080] The process of the arc-shaped skin clamping device provided in this embodiment clamping the arc-shaped skin 100 is as follows:

[0081] S1: Control the lifting mechanism 4 to drive the support beam 5 to drive the first pressing assembly 2, the second pressing assembly 3 and the third pressing member to rise, so as to place the arc-shaped skin 100 in the receiving groove 11 along its length direction;

[0082] S2: adjusting the position of the arc-shaped skin 100 in the receiving groove 11 until the positioning piece can be inserted into the corresponding positioning hole 1 and positioning hole 2;

[0083] S3: Control the lifting mechanism 4 to drive the support beam 5 to descend until the third pressing member presses the arc-shaped skin 100 against the wall of the accommodating groove 11 in the vertical direction;

[0084] S4: Control the first driving member 22 to drive the first pressing member 21 to approach the arc-shaped skin 100 until the first pressing member 21 presses the length side of the arc-shaped skin 100 against the groove wall of the accommodating groove 11; at the same time, control the second driving member 32 to drive the second pressing member 31 to approach the arc-shaped skin 100 until the second pressing member 31 presses the arc-shaped side of the arc-shaped skin 100 against the groove wall of the accommodating groove 11.

[0085] The above description is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. Technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims

1. A curved skin clamping device, characterized in that: include: A support base (1), wherein a receiving groove (11) is provided on the support base (1), the groove wall of the receiving groove (11) is curved in an arc shape, and the arc-shaped skin (100) can fit with the groove wall of the receiving groove (11); The clamping mechanism comprises a first clamping assembly (2) and a second clamping assembly (3) which are arranged on the support base (1), wherein the first clamping assembly (2) comprises a first clamping piece (21), which extends along the length direction of the arc-shaped skin (100), and the first clamping piece (21) is used to clamp the length side of the arc-shaped skin (100) against the groove wall of the accommodating groove (11); the second clamping assembly (3) comprises a second clamping piece (31), which extends along the bending direction of the arc-shaped skin (100), and the second clamping piece (31) is located at one end of the arc-shaped skin (100) along the length direction, and is used to clamp the arc-shaped side of the end of the arc-shaped skin (100) against the groove wall of the accommodating groove (11).

2. The arc-shaped skin clamping device according to claim 1, characterized in that: The support base (1) is provided with a lifting mechanism (4) and a support beam (5), the support beam (5) extending along the length direction of the arc-shaped skin (100), the first clamping assembly (2) and the second clamping assembly (3) are both arranged on the support beam (5), and the output end of the lifting mechanism (4) is connected to the support beam (5) for driving the support beam (5) to rise and fall, so that the first clamping assembly (2) and the second clamping assembly (3) are close to or away from the receiving groove (11).

3. The arc-shaped skin clamping device according to claim 2, characterized in that: The first clamping assembly (2) further comprises a first driving member (22), the first driving member (22) having two output ends, two first clamping members (21) are provided, the two first clamping members (21) are symmetrically arranged along the width direction of the arc-shaped skin (100), the two output ends of the first driving member (22) are connected to the two first clamping members (21) in a one-to-one correspondence, and are used to drive the two first clamping members (21) to approach or move away from the two corresponding length sides on the arc-shaped skin (100).

4. The arc-shaped skin clamping device according to claim 3, characterized in that: The first clamping assembly (2) further comprises a first mounting frame, a first end of the first mounting frame being rotatably connected to the support beam (5), a second end of the first mounting frame being fixedly connected to the first clamping member (21), and an output end of the first driving member (22) being connected to the first mounting frame.

5. The arc-shaped skin clamping device according to claim 2, characterized in that: The second clamping assembly (3) further comprises a plurality of second driving members (32), wherein the plurality of second driving members (32) are arranged at intervals along the extension direction of the second clamping member (31), and the output end of each second driving member (32) can contact the second clamping member (31) to drive the second clamping member (31) to press the arc-shaped skin (100) against the groove wall of the accommodating groove (11).

6. The arc-shaped skin clamping device according to claim 5, characterized in that: The second clamping assembly (3) also includes a second mounting frame arranged on the support beam (5), the second clamping member (31) is fixed on the second mounting frame, a plurality of second driving members (32) are installed on the second mounting frame at intervals, and the plurality of second driving members (32) are located on the side of the second clamping member (31) facing away from the arc-shaped skin (100).

7. The arc-shaped skin clamping device according to claim 2, characterized in that: The clamping mechanism also includes a third clamping member, which extends in a vertical direction, one end of which is fixedly connected to the support beam (5), and the other end of which is capable of contacting the arc-shaped skin (100) and pressing the arc-shaped skin (100) against the groove wall of the accommodating groove (11).

8. The arc-shaped skin clamping device according to claim 2, characterized in that: The lifting mechanism (4) comprises a rotary drive member (41), a transmission assembly, a guide member (42) and a lifting member (43); the rotary drive member (41) and the guide member (42) are both arranged on the support base (1); the lifting member (43) extends in a vertical direction and is slidably connected to the guide member (42) in the vertical direction; one end of the lifting member (43) is fixedly connected to the support beam (5); the other end of the lifting member (43) is connected to the output end of the rotary drive member (41) through the transmission assembly; the rotary drive member (41) is used to drive the transmission assembly to drive the lifting member (43) to move in the vertical direction.

9. The arc-shaped skin clamping device according to claim 8, characterized in that: The transmission assembly comprises a driving gear, a driven gear and a transmission shaft, the lifting member (43) comprises a lifting cylinder, the transmission shaft extends along the vertical direction, one end of which is rotatably connected to the support base (1), and the other end of which extends into the lifting cylinder and is threadedly matched with the lifting cylinder, the guide member (42) comprises a guide cylinder, the guide cylinder is coaxially and spaced outside the transmission shaft, the lifting cylinder is coaxially arranged in the guide cylinder, and is slidably connected to the guide cylinder along the vertical direction, the driving gear is arranged at the output end of the rotating drive member, the driven gear is coaxially fixed to the transmission shaft, and the driven gear is meshed with the driving gear.

10. The arc-shaped skin clamping device according to any one of claims 1 to 9, characterized in that: The support base (1) comprises a fixed seat (12), a movable frame (13), a plurality of arc-shaped plates (14), a first side plate (15) and a second side plate (16); the movable frame (13) is movably arranged on the fixed seat (12) along the length direction of the arc-shaped skin (100); the plurality of arc-shaped plates (14) are arranged on the movable frame (13) at intervals along the length direction of the arc-shaped skin (100); the arc-shaped spaces of the plurality of arc-shaped plates (14) enclose the accommodating space The first side panel (15) and the second side panel (16) are both extended along the length direction of the arc-shaped skin (100), the first end of each arc-shaped panel (14) is connected to the first side panel (15), the second end of each arc-shaped panel (14) is connected to the second side panel (16), and the side surfaces of the first side panel (15) and the second side panel (16) facing the inside of the accommodating groove (11) are both flush with the inner arc surface of the arc-shaped panel (14).

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