Thin-wall workpiece clamping fixture

Abstract

The present invention belongs to the technical field of machining tooling, and specifically relates to a thin-walled workpiece clamping tooling. The thin-walled workpiece clamping tooling in the present invention includes a base plate, a locking assembly, a plurality of clamping assemblies, a plurality of first steering assemblies, a headless traction rope, an adjustment assembly and an adjustment traction rope; the locking assembly is connected to the base plate, and the locking assembly is used to fix the bottom of the thin-walled workpiece and the base plate; the first steering assembly is connected to the base plate, and the first steering assembly includes a first steering wheel; the headless traction rope passes through the wire passing member and the first steering wheel and the ends are connected to form a closed loop; the adjustment assembly is arranged on the base plate, and the adjustment assembly includes a wiring member, and the wiring member can move relative to the base plate; one end of the adjustment traction rope is connected to the headless traction rope, and the other end of the adjustment traction rope is connected to the wiring member. The thin-walled workpiece clamping tooling in this technical solution can effectively reduce the vibration during the processing of thin-walled workpieces, and will not cause structural deformation of the workpiece.

Description

Technical Field

[0001] The invention belongs to the technical field of machining tooling, and in particular relates to a thin-wall workpiece clamping tooling. Background Art

[0002] In the aerospace industry, most parts are thin-walled. To maintain the shape of thin-walled workpieces during machining, fixtures are often required for auxiliary support. However, since thin-walled workpieces are often made of difficult-to-machine materials such as high-temperature alloys or titanium alloys, and their wall thickness is relatively small, vibration often occurs during machining, seriously affecting machining accuracy and quality.

[0003] In the prior art, the following three different types of tooling are generally used for clamping thin-walled workpieces: overall adaptive flexible support tooling, multi-point auxiliary support tooling, or symmetrical follow-up flexible support tooling. In actual production and processing, thin-walled workpieces have various shapes, and the existing clamping tooling has poor versatility. When facing complex thin-walled structures, the ability to control traveling waves and standing waves in thin-walled workpieces is limited, and the workpiece is prone to flutter, and in severe cases, high-cycle fatigue damage may occur. In addition, after the tooling is removed, the stress applied to the workpiece is released, and the structure of the workpiece is prone to deformation, which in turn leads to a decrease in the quality of the workpiece. In the field of aerospace and aeroengines, the processing cost of thin-walled workpieces is very high, so vibration control and deformation control during the processing process are of paramount importance.

[0004] Therefore, it is urgent to propose a thin-walled workpiece clamping fixture to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to at least solve the problem of how to reduce vibration during the machining of thin-walled workpieces and deformation after tooling is removed. This purpose is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides a thin-walled workpiece clamping fixture, comprising:

[0007] base plate;

[0008] A locking assembly, the locking assembly being connected to the base plate and being used to fix the bottom of the thin-walled workpiece to the base plate;

[0009] A plurality of clamping assemblies, each of which is used to be connected to the top of the thin-walled workpiece, and each of which includes a wire-passing member;

[0010] a plurality of first steering assemblies, each of the first steering assemblies being connected to the base plate, one of the first steering assemblies being provided on each side of the clamping assembly, the first steering assemblies on both sides of the clamping assembly being equidistant from the clamping assembly, and the first steering assembly comprising at least one first steering wheel;

[0011] An endless traction rope, wherein the endless traction rope passes through the wire-passing member and the first steering wheel, and the ends of the endless traction rope are connected to form a closed loop, and the first steering wheel is used to change the traveling direction of the endless traction rope;

[0012] an adjustment assembly, the adjustment assembly being disposed on the base plate and comprising a connecting piece, the connecting piece being movable relative to the base plate;

[0013] An adjusting traction rope, one end of which is connected to the headless traction rope, and the other end of which is connected to the connecting piece.

[0014] The thin-walled workpiece clamping fixture provided by this technical solution secures the bottom and base plate of the thin-walled workpiece via a locking assembly, connects to the top of the thin-walled workpiece via a clamping assembly, and uses a headless traction rope to pass through a wire-passing member in the clamping assembly and a first steering wheel on a first steering assembly, allowing the headless rope to apply pressure to the thin-walled workpiece. By adjusting the position of the clamping assembly and the first steering assembly, the resultant force of the thin-walled workpiece in a direction perpendicular to itself is zero. The headless traction rope only applies pressure to the thin-walled workpiece in a direction that coincides with the thin-walled workpiece, thereby ensuring that the thin-walled workpiece is in a state of force balance. Consequently, the clamping and removal of the fixture will not affect the stress characteristics of the thin-walled workpiece, thereby achieving the purpose of controlling the deformation of the thin-walled workpiece.

[0015] A headless traction rope is a traction rope connected end to end to form a loop, a traction rope connected end to end on the same object to form a loop, or several traction ropes and several objects connected end to end to form a loop. The headless traction rope has two characteristics: 1) The headless traction rope is a flexible body, so it has no concentrated mass, and its natural frequency can change according to the change of tension, and it has the characteristic of easy frequency adjustment; 2) After the headless traction rope is tensioned, the tension of the traction rope on both sides of the thin-walled workpiece is consistent. This technical solution utilizes the characteristic of easy adjustment of the modal frequency of the headless traction rope, so that the natural frequency of the headless traction rope approaches the modal frequencies of different orders of the thin-walled workpiece, so that when the thin-walled workpiece is excited near its natural frequency, the vibration energy of the thin-walled workpiece can be transferred to the headless traction rope, forming a connected effect.

[0016] Furthermore, because the maximum modal frequency on the frequency spectrum that affects the vibration of thin-walled workpieces is different under different working conditions, the headless traction rope and the movable connecting piece in the adjustment assembly are connected by adjusting the traction rope, so that the thin-walled workpiece clamping fixture has a strong adaptability to the dynamic characteristics of the thin-walled workpiece. During operation, according to the natural mode of the thin-walled workpiece, the position of the connecting piece is moved to change the tension of the headless traction rope so as to apply a suitable amount of pressure to the thin-walled workpiece. In this way, the vibration energy of the modal frequency that affects the maximum vibration of the thin-walled workpiece can be transferred to the headless traction rope, thereby achieving the purpose of reducing the modal frequency of the thin-walled workpiece. Lowering the modal frequency of the thin-walled workpiece can make it avoid the main excitation frequency range during the processing process, thereby greatly reducing the amplitude of the thin-walled workpiece and achieving the effect of controlling the vibration of the thin-walled workpiece.

[0017] In addition, each component of the thin-walled workpiece clamping fixture adopts a modular design. The thin-walled workpiece is fixed using multiple independent locking components and multiple independent clamping components. Furthermore, the endless traction rope and the adjustable traction rope can be freely transformed in shape. Therefore, the thin-walled workpiece clamping fixture can be applied to clamping workpieces of other shapes, such as flat plates, arcs, and rings. During use, the appropriate number of components and the appropriate clamping position can be selected according to the curvature of the thin-walled workpiece. During use, when the endless traction rope is tightened, the force applied by the clamping module on the thin-walled workpiece is always perpendicular to the thin-walled workpiece.

[0018] In summary, the thin-walled workpiece clamping fixture can effectively reduce the vibration during the processing of thin-walled workpieces without causing structural deformation of the thin-walled workpieces; it has a wide range of applications and can be applied to the processing of workpieces of other shapes such as flat plates, arcs and rings; the modularly designed components are easy to assemble and disassemble, and the travel mode of the headless traction rope can be quickly changed according to usage needs.

[0019] In addition, the thin-walled workpiece clamping fixture of the present invention may also have the following additional technical features:

[0020] In some embodiments of the present invention, the headless traction rope includes a first section and a second section, the first section is passed through the line member and the first steering wheel, the second section is connected to the adjustment traction rope, the first end of the first section and the first end of the second section are connected through a first dynamometer, and the second end of the first section and the second end of the second section are connected through a second dynamometer, and the first dynamometer and the second dynamometer are used to measure the tension applied to the headless traction rope.

[0021] In some embodiments of the present invention, a damper is provided on the endless traction rope.

[0022] In some embodiments of the present invention, the damper includes two spliced ​​shells, and a wire passing groove is provided on one side of the shell for splicing. The two wire passing grooves are connected to form a wire passing hole, and the headless traction rope is passed through the wire passing hole. The shell has a cavity, and vibration-damping particles are provided inside the cavity.

[0023] In some embodiments of the present invention, the locking assembly includes a connecting seat arranged in a pair, and the connecting seat includes a base plate connecting plate and a pressure block connecting plate connected to each other, the base plate connecting plate is connected to the base plate, and the thin-walled workpiece is clamped between the two pressure block connecting plates, and a first mounting hole is provided on the pressure block connecting plate, and a pressure block is provided in the first mounting hole, and the pressure block can move toward the direction close to the thin-walled workpiece.

[0024] In some embodiments of the present invention, the clamping assembly includes a connecting body, the connecting body includes a wire passing piece connecting part and two moving block connecting parts, the wire passing piece is connected to the wire passing piece connecting part, the two moving block connecting parts are respectively connected to the wire passing piece connecting part and the two moving block connecting parts are arranged at intervals, and the interval between the two moving block connecting parts is used to insert the thin-walled workpiece, a second mounting hole is provided on the moving block connecting part, and a moving block is provided in the second mounting hole, and the moving block can move in a direction close to the thin-walled workpiece.

[0025] In some embodiments of the present invention, the wire passing member connecting portion is connected to a connecting shaft, the wire passing member is a pulley rotatably connected to the connecting shaft, and the pulley and the headless traction rope are rollingly connected.

[0026] In some embodiments of the present invention, the first steering assembly includes a first base, the first steering wheel is rotatably connected to the first base, and the first base is connected to the bottom plate.

[0027] In some embodiments of the present invention, the thin-walled workpiece clamping tool also includes a second steering assembly, the second steering assembly includes a second base and at least one second steering wheel, the second steering wheel is rotatably connected to the base, the second base is connected to the base plate, and the second steering wheel is used to change the travel direction of the adjustment traction rope.

[0028] In some embodiments of the present invention, the adjustment assembly further includes a fixed seat, a transmission rod and an adjustment base, the fixed seat is connected to the base plate, the transmission rod is passed through the adjustment base and is threadedly connected to the adjustment base, both ends of the transmission rod are rotatably connected to the fixed seat, the wiring member is arranged on the adjustment base, and by rotating the transmission rod, the adjustment base can drive the wiring member to move back and forth along the transmission rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0030] Figure 1 The following schematically shows the structure of the thin-walled workpiece clamping fixture according to an embodiment of the present invention in a use state (the thin-walled workpiece is in the shape of a flat plate);

[0031] Figure 2 The following schematically shows the structure of the thin-walled workpiece clamping fixture according to an embodiment of the present invention in a use state (the thin-walled workpiece is in the shape of an arc plate);

[0032] Figure 3 The following schematically shows the structure of the thin-walled workpiece clamping fixture according to an embodiment of the present invention in a use state (the thin-walled workpiece is in the shape of an annular plate);

[0033] Figure 4 Schematically shows a partial structural diagram of a thin-walled workpiece clamping fixture in use according to an embodiment of the present invention;

[0034] Figure 5 Schematically shows a structural diagram of a damper according to an embodiment of the present invention;

[0035] Figure 6 Schematically shows an exploded view of a damper according to an embodiment of the present invention;

[0036] Figure 7 Schematically shows a structural diagram of a locking base according to an embodiment of the present invention;

[0037] Figure 8 Schematically shows a partial structural exploded view of a locking base according to an embodiment of the present invention;

[0038] Figure 9 The structure of the clamping assembly according to the embodiment of the present invention is schematically shown. Figure 1 ;

[0039] Figure 10 schematically illustrates an exploded view of a clamping assembly according to an embodiment of the present invention;

[0040] Figure 11 The structure of the clamping assembly according to the embodiment of the present invention is schematically shown. Figure 2 ;

[0041] Figure 12The figure schematically shows the structure of the connection body according to an embodiment of the present invention at a certain viewing angle;

[0042] Figure 13 Schematically shows a structural diagram of a connecting body according to an embodiment of the present invention at another viewing angle;

[0043] Figure 14 Schematically shows a schematic diagram of the dimensional relationship between a connecting body and a thin-walled workpiece according to an embodiment of the present invention;

[0044] Figure 15 Schematically shows a structural diagram of a first steering assembly according to an embodiment of the present invention;

[0045] Figure 16 Schematically shows a structural diagram of a second steering assembly according to an embodiment of the present invention;

[0046] Figure 17 The schematic diagram of the structure of the adjustment component according to the embodiment of the present invention is shown schematically.

[0047] The reference numerals in the accompanying drawings represent the following:

[0048] 10. Thin-walled workpieces;

[0049] 100, bottom plate;

[0050] 200, locking assembly; 210, connecting seat; 211, bottom plate connecting plate; 212, pressure block connecting plate; 2121, first mounting hole; 220, pressure block; 221, guide sleeve; 230, first connecting plate; 240, first locking bolt; 250, first limiting plate; 251, first avoidance hole; 260, first gasket;

[0051] 300, clamping assembly; 310, wire-passing member; 320, connecting body; 321, wire-passing member connecting portion; 322, moving block connecting portion; 3221, second mounting hole; 330, moving block; 340, second connecting plate; 350, second locking bolt; 360, second limiting plate; 361, second avoidance hole; 370, connecting shaft; 380, second gasket;

[0052] 400, first steering assembly; 410, first base; 420, first steering wheel;

[0053] 500, endless traction rope; 510, first section; 520, second section; 501, first dynamometer; 502, second dynamometer; 530, damper; 531, housing; 5311, wire groove; 5312, positioning protrusion; 5313, positioning hole; 532, housing connection portion;

[0054] 600, adjustment assembly; 610, connection piece; 620, fixing base; 621, aluminum profile; 622, support plate; 630, transmission rod; 640, adjustment base; 650, adjustment platform; 660, crank handle; 670, locking piece; 671, clamping block; 672, connecting bolt; 673, locking handle; 674, connecting nut;

[0055] 700, adjusting the traction rope; 710, connecting wheel;

[0056] 800, second steering assembly; 810, second base; 820, second steering wheel. DETAILED DESCRIPTION

[0057] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0058] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0059] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0060] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped over, an element described as "below" or "beneath" another element or feature would then be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0061] Since the thin-walled workpiece 10 is a continuous flexible body with no concentrated mass, it is equivalent to having infinite degrees of freedom and therefore infinite modal frequencies. In addition, depending on the different clamping positions, support methods, and the direction and magnitude of the preload force, the stiffness distribution of the thin-walled workpiece 10 will be different, and thus the modal frequency will have a certain migration, so it has the characteristic of easy migration of modal frequency. The present invention utilizes the characteristic of easy migration of the modal frequency of the thin-walled workpiece 10 and applies a preload force to the thin-walled workpiece 10 through components such as the clamping assembly 300, the first steering assembly 400, and the headless traction rope 500, so that the modal frequency of the thin-walled workpiece 10 migrates, thereby causing its modal frequency to avoid the excitation frequency during the processing process to reduce vibration during the processing process.

[0062] Figure 1 The schematic structural diagram of the thin-walled workpiece clamping fixture according to the embodiment of the present invention in the use state is shown (the thin-walled workpiece 10 is in the shape of a flat plate). Figure 2 The schematic structural diagram of the thin-walled workpiece clamping fixture according to the embodiment of the present invention in the use state is shown (the thin-walled workpiece 10 is in the shape of an arc plate). Figure 3 The schematic structural diagram of the thin-walled workpiece clamping fixture according to the embodiment of the present invention in the use state is shown (the thin-walled workpiece 10 is an annular plate). Figure 4 The following schematically shows a partial structural diagram of a thin-walled workpiece clamping fixture according to an embodiment of the present invention in use. Figures 1 to 4The present invention proposes a thin-walled workpiece clamping tool, comprising a base plate 100, a locking assembly 200, a plurality of clamping assemblies 300, a plurality of first steering assemblies 400, a headless traction rope 500, an adjustment assembly 600 and an adjustment traction rope 700; the locking assembly 200 is connected to the base plate 100, and the locking assembly 200 is used to fix the bottom of the thin-walled workpiece 10 and the base plate 100; the first steering assembly 400 is connected to the base plate 100, and a first steering assembly 400 is respectively provided on both sides of the clamping assembly 300, and the first steering assemblies 400 on both sides of the clamping assembly 300 are connected to the clamping assembly 300, the first steering assembly 400 includes at least one first steering wheel 420; the headless traction rope 500 passes through the wire member 310 and the first steering wheel 420 and the ends of the headless traction rope 500 are connected to form a closed loop, and the first steering wheel 420 is used to change the travel direction of the headless traction rope 500; the adjustment assembly 600 is arranged on the base plate 100, and the adjustment assembly 600 includes a wiring member 610, which can move relative to the base plate 100; one end of the adjustment traction rope 700 is connected to the headless traction rope 500, and the other end of the adjustment traction rope 700 is connected to the wiring member 610.

[0063] The thin-walled workpiece clamping fixture provided by the present technical solution fixes the bottom of the thin-walled workpiece 10 and the base plate 100 through the locking assembly 200, connects to the top of the thin-walled workpiece 10 through the clamping assembly 300, and uses a headless traction rope 500 to pass through the wire-passing member 310 in the clamping assembly 300 and the first steering wheel 420 on the first steering assembly 400, so that the headless traction rope 500 applies pressure to the thin-walled workpiece 10. By adjusting the position of the clamping assembly 300 and the first steering assembly 400, the resultant force of the thin-walled workpiece 10 in the direction perpendicular to itself is zero, and the headless traction rope 500 only applies pressure to the thin-walled workpiece 10 in a direction that coincides with the thin-walled workpiece 10, thereby ensuring that the thin-walled workpiece 10 is in a state of force balance. Furthermore, the clamping and removal of the fixture will not affect the stress characteristics of the thin-walled workpiece 10, thereby achieving the purpose of controlling the deformation of the thin-walled workpiece 10.

[0064] The headless traction rope 500 refers to a traction rope connected end to end to form a loop, a traction rope connected end to end on the same object to form a loop, or several traction ropes and several objects connected end to end to form a loop. The headless traction rope 500 has two characteristics: 1) The headless traction rope 500 is a flexible body, therefore, there is no concentrated mass, and its natural frequency can change according to the change of tension, and it has the characteristic of easy frequency adjustment; 2) After the headless traction rope 500 is tensioned, the tension of the traction ropes on both sides of the thin-walled workpiece 10 is consistent. This technical solution utilizes the characteristic of the easy adjustment of the modal frequency of the headless traction rope 500, so that the natural frequency of the headless traction rope 500 approaches the modal frequencies of different orders of the thin-walled workpiece 10, so that when the thin-walled workpiece 10 is excited near its natural frequency, the vibration energy of the thin-walled workpiece 10 can be transferred to the headless traction rope 500, forming a connected effect.

[0065] Because the maximum modal frequency on the frequency spectrum that affects the vibration of the thin-walled workpiece 10 is different under different working conditions, the headless traction rope 500 and the movable connecting piece 610 in the adjustment assembly 600 are connected by adjusting the traction rope 700, so that the thin-walled workpiece clamping fixture has a strong adaptability to the dynamic characteristics of the thin-walled workpiece 10. During operation, according to the natural mode of the thin-walled workpiece 10, the position of the connecting piece 610 is moved to change the tension of the headless traction rope 500 so as to apply a suitable amount of pressure to the thin-walled workpiece 10. In this way, the vibration energy of the modal frequency that affects the maximum vibration of the thin-walled workpiece 10 can be transferred to the headless traction rope 500, thereby achieving the purpose of reducing the modal frequency of the thin-walled workpiece 10. Lowering the modal frequency of the thin-walled workpiece 10 can avoid the main excitation frequency range during the processing process, thereby significantly reducing the amplitude of the thin-walled workpiece 10 and achieving the effect of controlling the vibration of the thin-walled workpiece 10.

[0066] In addition, each component of the thin-walled workpiece clamping fixture adopts a modular design. The thin-walled workpiece 10 is fixed using multiple independent locking components 200 and multiple independent clamping components 300. Furthermore, the endless traction rope 500 and the adjustable traction rope 700 are freely changeable in shape. Therefore, the thin-walled workpiece clamping fixture can be applied to clamping workpieces of other shapes, such as flat plates, arcs, and rings. During use, the appropriate number of components and the appropriate clamping position can be selected according to the curvature of the thin-walled workpiece 10, so that when the endless traction rope 500 is tightened, the force applied by the clamping module to the thin-walled workpiece 10 is always perpendicular to the thin-walled workpiece 10.

[0067] In summary, the thin-walled workpiece clamping fixture can effectively reduce the vibration during the processing of the thin-walled workpiece 10, and will not cause structural deformation of the thin-walled workpiece 10; it has a wide range of applications and can be applied to the processing of workpieces of other shapes such as flat plates, arcs and rings; the modularly designed components are easy to assemble and disassemble, and the travel mode of the headless traction rope 500 can be quickly changed according to usage needs.

[0068] Optionally, both the endless traction rope 500 and the adjustable traction rope 700 are made of steel wire rope. Steel wire rope can withstand large tension, has good wear resistance and a long service life. In addition, the friction coefficient of the steel wire rope is small, and the friction between the steel wire rope and the wire passing member 310 can be ignored.

[0069] It can be understood that the arrangement of the locking assembly 200, the clamping assembly 300 and the endless traction rope 500 is related to the structure of the thin-walled workpiece 10. Figure 1 As shown, when the thin-walled workpiece 10 is in the shape of a flat plate, multiple locking bases are equidistantly arranged, multiple clamping assemblies 300 are equidistantly arranged, and a first steering assembly 400 is provided on both sides of each clamping assembly 300. The first steering assemblies 400 on both sides of the thin-walled workpiece 10 are symmetrically arranged, thereby ensuring that the projection of the headless traction rope 500 between the two first steering assemblies 400 on the bottom plate 100 is perpendicular to the thin-walled workpiece 10. This arrangement makes the resultant force of the thin-walled workpiece 10 in the direction perpendicular to itself zero, and the direction of the resultant force is vertically downward. Figure 2 and Figure 3 As shown, when the thin-walled workpiece 10 is in the shape of an arcuate plate or an annular plate, multiple locking bases are equidistantly spaced, multiple clamping assemblies 300 are equidistantly spaced, and a first steering assembly 400 is provided on both sides of each clamping assembly 300. The two first steering assemblies 400 are equidistant from the clamping assembly 300, and the projection of the endless traction rope 500 between the two first steering assemblies 400 on the base plate 100 is perpendicular to the tangent direction of the thin-walled workpiece 10 at the clamping assembly 300. As a result, the resultant force on the thin-walled workpiece 10 in the direction perpendicular to itself is zero, and the direction of the resultant force is vertically downward. It can be understood that when the thin-walled workpiece 10 is in the shape of an annular plate, the projection of the endless traction rope 500 between the first steering assemblies 400 on the base plate 100 on the first steering assemblies 400 on both sides of any clamping assembly 300 is located in the radial direction of the thin-walled workpiece 10. It should be noted that no matter what the structure of the thin-walled workpiece 10 is, in the arrangement of the locking assembly 200, the clamping assembly 300 and the headless traction rope 500, as long as the resultant force of the thin-walled workpiece 10 in the direction perpendicular to itself is zero, the headless traction rope 500 only applies pressure to the thin-walled workpiece 10 in a direction that coincides with the thin-walled workpiece 10, and there is no specific limitation on the position and number of the locking assembly 200 and the clamping assembly 300.

[0070] Continue to see Figures 1 to 3 The endless traction rope 500 includes a first section 510 and a second section 520. The first section 510 passes through the wire member 310 and the first steering wheel 420. The first end of the first section 510 and the first end of the second section 520 are connected via a first dynamometer 501. The second end of the first section 510 and the second end of the second section 520 are connected via a second dynamometer 502. The second section 520 is connected to the adjustable traction rope 700. The first dynamometer 501 and the second dynamometer 502 are used to measure the tension applied to the endless traction rope 500. It can be understood that the first section 510, the first dynamometer 501, the second section 520, and the second dynamometer 502 are connected end to end to form a closed loop, so that the tension of the endless traction rope 500 can be adjusted by adjusting the position of the connecting member 610. To achieve optimal vibration and deformation control, a suitable model of endless traction rope 500 is selected through simulation calculations. Furthermore, the preset range should be calculated based on parameters such as the modal frequency of the thin-walled workpiece 10 and the characteristics of the endless traction rope 500. Understandably, a larger diameter endless traction rope 500 can bear greater loads, but also results in greater stiffness and internal stress, which results in greater friction between the endless traction rope 500 and the wire guide. Therefore, a suitable thickness of endless traction rope 500 is necessary. Simulation calculations can typically determine the required diameter range for the endless traction rope 500, but more precise diameter determination requires experimentation or actual operation. The model and preset range of the endless traction rope 500 should be selected so that its natural modes approximate those of the thin-walled workpiece 10, creating a resonant effect and thereby directing all vibrations during machining to the endless traction rope 500. The selection method for the endless traction rope 500 and the calculation of the preset range are well-established techniques in the art and will not be elaborated upon here.

[0071] See also Figure 4 The end where the adjustable traction rope 700 connects to the endless traction rope 500 is provided with a connecting wheel 710, and the endless traction rope 500 and the connecting wheel 710 are connected in a rolling manner. Specifically, the end where the adjustable traction rope 700 connects to the endless traction rope 500 is provided with a connecting buckle, which is provided with a connecting rod, and the connecting wheel 710 is rotatably connected to the connecting rod. This connection method can minimize friction between the components.

[0072] Furthermore, Figure 5 The structure diagram of the damper 530 according to the embodiment of the present invention is schematically shown. Figure 6 The exploded view of the damper 530 according to the embodiment of the present invention is schematically shown. The damper 530 can absorb the vibration on the endless traction rope 500 and enhance the vibration reduction effect.

[0073] Furthermore, the damper 530 includes two spliced ​​shells 531, and a wire groove 5311 is provided on one side of the shell 531 for splicing. The two wire grooves 5311 are connected to form a wire hole. The headless traction rope 500 is passed through the wire hole. The shell 531 has a cavity, and vibration-damping particles are provided inside the cavity. Through the collision and friction between the vibration-damping particles and the interaction between the vibration-damping particles and the inner wall of the shell 531, a highly nonlinear and complex physical phenomenon is formed, which can absorb vibrations within a wide frequency range. The damper 530 acts as a broadband vibration absorber. A plurality of dampers 530 can be provided on the headless traction rope 500 between the clamping assembly 300 and the first steering assembly 400. These dampers 530 can absorb and dissipate the vibrations transmitted to the headless traction rope 500 during the processing of the thin-walled workpiece 10, thereby keeping the thin-walled workpiece 10 and the headless traction rope 500 stable.

[0074] In this embodiment, the shells 531 are symmetrically arranged, forming an ellipsoidal shape when joined. Shell connectors 532 are provided at each end of the shells 531. After joining, the two shells 531 are secured together using bolts. Preferably, each shell 531 has a positioning hole 5313 and a positioning protrusion 5312 on the side intended for joining. During assembly, the positioning holes 5313 and the positioning protrusions 5312 engage. The positioning holes 5313 not only provide positioning during assembly, but also serve as a placement port for vibration-damping particles. It is understood that larger vibration-damping particles provide a better damping effect on low-frequency vibrations, while smaller particles provide a better damping effect on high-frequency vibrations. Therefore, the volume of the vibration-damping particles can be selected based on specific usage requirements. Preferably, the filling ratio of the vibration-damping particles within the cavity is 50%, which ensures optimal vibration damping. Optionally, the shell 531 may be made of aluminum alloy, and the vibration-damping particles may be rubber particles, plastic particles, metal particles, or the like.

[0075] Furthermore, Figure 7 The structural diagram of the locking base according to the embodiment of the present invention is schematically shown. Figure 8 Schematically shows a partial structural explosion diagram of the locking base according to an embodiment of the present invention. Figure 7 and Figure 8 The locking assembly 200 includes a pair of connecting seats 210, and the connecting seats 210 include a base plate connecting plate 211 and a pressure block connecting plate 212 that are connected to each other. The base plate connecting plate 211 is connected to the base 100, and the thin-walled workpiece 10 is clamped between the two pressure block connecting plates 212. A first mounting hole 2121 is provided on the pressure block connecting plate 212, and a pressure block 220 is provided in the first mounting hole 2121. The pressure block 220 can move toward the direction close to the thin-walled workpiece 10.

[0076] Furthermore, a first connecting plate 230 is connected to the side of the pressure block connecting plate 212 facing away from the thin-walled workpiece 10, and a first locking bolt 240 is passed through the first connecting plate 230. The first locking bolt 240 and the pressure block 220 are threadedly connected, and a first limiting plate 250 is connected to the side of the first connecting plate 230 facing away from the pressure block connecting plate 212. A first avoidance hole 251 is provided on the first limiting plate 250, which is opposite to the first locking bolt 240. The first limiting plate 250 and the head of the first locking bolt 240 are in contact with each other, and the first avoidance hole 251 is used to rotate the first locking bolt 240 to make the pressure block 220 close to the thin-walled workpiece 10.

[0077] By rotating the first locking bolt 240, the pressure block 220 can be moved toward the thin-walled workpiece 10, so that the pressure blocks 220 on both sides of the thin-walled workpiece 10 clamp the thin-walled workpiece 10. The base plate connecting plate 211 and the pressure block connecting plate 212 are arranged vertically to ensure that the thin-walled workpiece 10 can be vertically fixed to the base plate 100. Optionally, the base plate connecting plate 211 is connected to the base plate 100 via bolts and nuts, which is very convenient for assembly and disassembly. It can be understood that the first mounting hole 2121 is a non-circular hole, and the shape of the pressure block 220 is set to correspond to the shape of the first mounting hole 2121 to prevent the pressure block 220 from rotating with the first locking bolt 240 when the first locking bolt 240 is rotated. In this embodiment, the first mounting hole 2121 is roughly triangular, and its corners are rounded to reduce stress concentration. In other embodiments, the shape of the first mounting hole 2121 can also be elliptical, waist-shaped, or polygonal. Optionally, a first locking bolt 240 is disposed in the middle of the first connecting plate 230, and the middle portion of the pressure block 220 is threadedly connected to the first locking bolt 240, thereby ensuring balanced force on the pressure block 220 and enabling the thin-walled workpiece 10 to be stably clamped by the pressure block 220. A guide sleeve 221 is provided on the side of the pressure block 220 facing the first locking bolt 240. The guide sleeve 221 guides the first locking bolt 240, facilitating insertion of the first locking bolt 240. Preferably, a receiving groove for accommodating a first gasket 260 is provided on the side of the pressure block 220 facing the thin-walled workpiece 10. By providing the first gasket 260 between the pressure block 220 and the thin-walled workpiece 10, hard contact between the pressure block 220 and the thin-walled workpiece 10 can be avoided, thereby effectively protecting the thin-walled workpiece 10 from wear. Optionally, the first gasket 260 may be a rubber pad. Furthermore, the first connecting plate 230 is connected to the pressing block connecting plate 212 via bolts, and the first limiting plate 250 is connected to the first connecting plate 230 via bolts.

[0078] Furthermore, Figure 9 The structure of the clamping assembly 300 according to the embodiment of the present invention is schematically shown. Figure 1 . Figure 10Schematically shows an exploded view of a clamping assembly 300 according to an embodiment of the present invention. Figure 9 and Figure 10 The clamping assembly 300 includes a connecting body 320, and the connecting body 320 includes a wire-passing piece connecting portion 321 and two moving block connecting portions 322. The wire-passing piece 310 is connected to the wire-passing piece connecting portion 321, and the two moving block connecting portions 322 are respectively connected to the wire-passing piece connecting portion 321 and the two moving block connecting portions 322 are arranged at intervals. The interval between the two moving block connecting portions 322 is used to insert the thin-walled workpiece 10. A second mounting hole 3221 is provided on the moving block connecting portion 322, and a moving block 330 is provided in the second mounting hole 3221. The moving block 330 can move in a direction close to the thin-walled workpiece 10.

[0079] Furthermore, a second connecting plate 340 is connected to the side of the moving block connecting portion 322 facing away from the thin-walled workpiece 10, and a second locking bolt 350 is passed through the second connecting plate 340. The second locking bolt 350 and the moving block 330 are threadedly connected, and a second limiting plate 360 ​​is connected to the side of the second connecting plate 340 facing away from the moving block connecting portion 322. A second avoidance hole 361 is provided on the second limiting plate 360 ​​facing the second locking bolt 350, and the second limiting plate 360 ​​and the head of the second locking bolt 350 abut against each other. The second avoidance hole 361 is used to rotate the second locking bolt 350 to make the moving block 330 close to the thin-walled workpiece 10.

[0080] By rotating the second locking bolt 350, the movable block 330 can be moved toward the thin-walled workpiece 10, so that the movable blocks 330 on both sides of the thin-walled workpiece 10 clamp the thin-walled workpiece 10. In this embodiment, there are three second mounting holes 3221, and each second mounting hole 3221 is provided with a movable block 330. The shape of the second mounting hole 3221 is roughly triangular, and its corners are transitioned by rounded corners to reduce stress concentration. The shape of the movable block 330 is consistent with the shape of the second mounting hole 3221. By providing multiple movable blocks 330, a stable connection between the clamping assembly 300 and the thin-walled workpiece 10 can be ensured. In other embodiments, the second mounting hole 3221 can also be a non-circular hole such as a waist-shaped hole, an elliptical hole or a polygonal hole, and the shape of the movable block 330 is set according to the shape of the second mounting hole 3221. Optionally, the second connecting plate 340 is connected to the movable block connecting portion 322 by bolts, and the second limiting plate 360 ​​is connected to the second connecting plate 340 by bolts. Optionally, a second gasket 380 is provided between the moving block 330 and the thin-walled workpiece 10. The provision of the second gasket 380 effectively prevents wear or deformation of the thin-walled workpiece 10. Preferably, the clamping assembly 300 is primarily made of aluminum alloy and titanium alloy, resulting in minimal additional mass and preventing excessive pressure on the thin-walled workpiece 10. This allows the endless traction rope 500 to have a wide range of tension adjustment, enabling it to apply appropriate pressure to the thin-walled workpiece 10.

[0081] Furthermore, in one embodiment, the wire-passing member connecting portion 321 is connected to a connecting shaft 370 , and the wire-passing member 310 is a pulley rotatably connected to the connecting shaft 370 , and the pulley and the headless traction rope 500 are rollingly connected.

[0082] The pulley has a low coefficient of friction, and there is rolling contact between the pulley and the endless traction rope 500. By using pulleys at the support points of the endless traction rope 500, the tension of each small section of the endless traction rope 500 on both sides of the thin-walled workpiece 10 is basically consistent. Therefore, when the connecting member 610 is adjusted, the tension at each point of the endless traction rope 500 can be coordinated to increase or decrease, ensuring sensitivity when adjusting the modal frequency of the endless traction rope 500.

[0083] Furthermore, Figure 11 The structure of the clamping assembly 300 according to the embodiment of the present invention is schematically shown. Figure 2 See also Figure 11In this embodiment, the wire-passing member is a lifting ring. The lifting ring includes a ring-shaped structure for passing the endless traction rope 500 and a rod-shaped structure for connecting to the wire-passing member connecting portion 321, and the ring-shaped structure is connected to the rod-shaped structure. In order to install the lifting ring and the wire-passing member connecting portion 321, a wire-passing member mounting hole is provided on the top of the wire-passing member connecting portion 321. The wire-passing member mounting hole is provided with an internal thread, and the rod-shaped structure is provided with an external thread. The wire-passing member mounting hole and the rod-shaped structure are threadedly connected via the internal and external threads.

[0084] Furthermore, Figure 12 The structure diagram of the connection body 320 according to an embodiment of the present invention is schematically shown at a certain viewing angle. Figure 13 The structure diagram of the connection body 320 according to the embodiment of the present invention is schematically shown at another viewing angle. Figure 14 Schematically shows the dimensional relationship between the connecting body 320 and the thin-walled workpiece 10 according to an embodiment of the present invention. Figures 12 to 14 The maximum width W of the connecting body 320 and the distance B between the two movable block connecting portions 322 are set according to the curvature radius R and thickness T of the thin-walled workpiece 10. For example, when the curvature radius is small, a connecting body 320 with a smaller maximum width B is selected to prevent the installation of the connecting body 320 from causing the shape of the thin-walled workpiece 10 to change.

[0085] Furthermore, Figure 15 The first steering assembly 400 according to an embodiment of the present invention is schematically shown. The first steering assembly 400 includes a first base 410 , a first steering wheel 420 rotatably connected to the first base 410 , and the first base 410 is connected to the bottom plate 100 .

[0086] Optionally, the first base 410 is connected to the base plate 100 via bolts. Two first steering wheels 420 are provided on the first base 410. The axes of the two first steering wheels 420 are perpendicular to each other, ensuring that the endless traction rope 500 can pass between adjacent clamping assemblies 300 and first steering assemblies 400, as well as between two adjacent first steering assemblies 400. A first steering wheel support portion is provided on the first base 410 for connecting to the first steering wheels 420. The shape of the first steering wheel support portion can be configured according to the actual use, as long as the first steering wheels 420 can rotate.

[0087] Furthermore, Figure 16 Schematically shows the structure of the second steering assembly 800 according to an embodiment of the present invention. Figure 16The thin-walled workpiece clamping fixture also includes a second steering assembly 800, which includes a second base 810 and at least one second steering wheel 820. The second steering wheel 820 is rotatably connected to the second base 810, and the second base 810 is connected to the base plate 100. The second steering wheel 820 is used to change the travel direction of the adjustment traction rope 700.

[0088] Optionally, the second base 810 is connected to the base plate 100 by bolts. According to the position of the headless traction rope 500 and the terminal block 610, the direction of the adjusting traction rope 700 is changed by 90° through the second steering wheel 820, and the end of the adjusting traction rope 700 connected to the terminal block 610 is adjusted to a suitable height, so that the adjusting traction rope 700 can connect the headless traction rope 500 and the terminal block 610. In this embodiment, the number of terminal blocks 610 is three. In other embodiments, the number of terminal blocks 610 is set according to usage needs. A second steering wheel support portion for connecting the second steering wheel 820 is provided on the second base 810, and its shape is set according to usage needs, as long as it is ensured that the second steering wheel 820 can rotate.

[0089] Figure 17 The following schematically illustrates the structure of an adjustment assembly 600 according to an embodiment of the present invention. The adjustment assembly 600 further includes a fixed seat 620, a transmission rod 630, and an adjustment base 640. The fixed seat 620 is connected to the base plate 100. The transmission rod 630 passes through the adjustment base 640 and is threadedly connected to the adjustment base 640. Both ends of the transmission rod 630 are rotatably connected to the fixed seat 620. The connector 610 is disposed on the adjustment base 640. Rotating the transmission rod 630 causes the adjustment base 640 to drive the connector 610 to reciprocate along the transmission rod 630.

[0090] The adjustment assembly 600 also includes a fixed base 620, a transmission rod 630, and an adjustment base 640. The transmission rod 630 is disposed through the adjustment base 640 and is threadedly connected to the adjustment base 640. Both ends of the transmission rod 630 are rotatably connected to the fixed base 620. A terminal 610 is disposed on the adjustment base 640. By rotating the transmission rod 630, the adjustment base 640 can drive the terminal 610 to reciprocate along the transmission rod 630. Optionally, the fixed base 620 includes an aluminum profile 621 and support plates 622 connected to both ends of the aluminum profile 621. The support plates 622 and the aluminum profile 621 are fixedly connected by bolts. Optionally, the aluminum profile 621 is connected to the base plate 100 by bolts. Both ends of the transmission rod 630 are rotatably connected to the support plate 622, and one end of the transmission rod 630 extends through the support plate 622 and is connected to the crank handle 660. The crank 660 has a sleeve portion, which is sleeved on the end of the transmission rod 630 and fixedly connected to the transmission rod 630 by a bolt. When the crank 660 is shaken, the transmission rod 630 and the crank 660 rotate synchronously, and at the same time, the adjustment base 640 moves along the transmission rod 630.

[0091] Optionally, a locking member 670 is provided at one end of the transmission rod 630 that passes through the support plate 622, and the locking member 670 is located between the sleeve portion and the support plate 622. Exemplarily, the locking member 670 includes a clamping block 671, a connecting bolt 672, a locking handle 673 and a connecting nut 674. The clamping block 671 includes an adjustment portion, and the two adjustment portions are spaced apart to form an adjustment gap. The clamping block 671 has a through hole, and the adjustment gap and the through hole are connected. The locking handle 673 is fixedly sleeved on the connecting bolt 672, and the bottom of the connecting bolt 672 passes through the adjustment portion and is connected to the connecting nut 674. When it is necessary to fix the position of the adjustment base 640, the locking handle 673 is turned to lock the connecting bolt 672 and the connecting nut 674. At the same time, the adjustment gap is reduced, and the clamping block 671 clamps the transmission rod 630, thereby preventing the screw from rotating.

[0092] Furthermore, the adjustment assembly 600 further includes an adjustment platform 650, which is fixedly connected to the adjustment base 640, and a connection member 610 is connected to the adjustment platform 650. Optionally, the connection member 610 can be a pulley rotatably connected to the adjustment platform 650, or a lifting ring fixedly connected to the adjustment platform 650, as long as it can be connected to the adjustment traction rope 700.

[0093] It can be understood that the base plate 100 has connecting holes at the positions where the locking assembly 200, the first steering assembly 400, the second steering assembly 800 and the adjustment assembly 600 need to be connected. The connecting holes can be circular holes or bar holes, and their specific shape, position and number are set according to the structure of the thin-walled workpiece 10 and the number and position of each component.

[0094] The method of using the thin-walled workpiece clamping fixture provided by this technical solution is as follows:

[0095] The bottom of the thin-walled workpiece 10 is fixed to the base plate 100 using the locking assembly 200, the clamping assembly 300 is connected to the thin-walled workpiece 10, the first section 510 of the endless traction rope 500 is passed through the wire-passing member 310 and the first steering wheel 420, the second section 520 is passed around the connecting wheel 710 on the adjusting traction rope 700, the first end of the first section 510 is connected to the first end of the second section 520 using the first dynamometer 501, the second end of the first section 510 is connected to the second end of the second section 520 using the second dynamometer 502, and the other end of the adjusting traction rope 700 is connected to the connecting member 610 via the second steering assembly 800;

[0096] Move the connecting piece 610 to adjust the tension on the endless traction rope 500, and adjust the positions of the components so that the readings of the first dynamometer 501 and the second dynamometer 502 are the same and within a preset range;

[0097] The thin-walled workpiece 10 is processed, and the positions of the components are adjusted so that the readings of the first dynamometer 501 and the second dynamometer 502 remain the same and within a preset range until the processing is completed.

[0098] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A thin-walled workpiece clamping fixture, characterized in that: include: Bottom plate (100); A locking assembly (200), the locking assembly (200) being connected to the base plate (100), the locking assembly (200) being used to fix the bottom of the thin-walled workpiece (10) and the base plate (100); A plurality of clamping assemblies (300), the clamping assemblies (300) being used to be connected to the top of the thin-walled workpiece (10), the clamping assemblies (300) comprising a wire-passing member (310); a plurality of first steering assemblies (400), wherein the first steering assemblies (400) are connected to the base plate (100), one first steering assembly (400) is respectively provided on both sides of the clamping assembly (300), the first steering assemblies (400) on both sides of the clamping assembly (300) are equidistant from the clamping assembly (300), and the first steering assembly (400) includes at least one first steering wheel (420); a headless traction rope (500), wherein the headless traction rope (500) passes through the wire-passing member (310) and the first steering wheel (420), and the ends of the headless traction rope (500) are connected to form a closed loop, and the first steering wheel (420) is used to change the traveling direction of the headless traction rope (500); an adjustment component (600), the adjustment component (600) being disposed on the base plate (100), the adjustment component (600) comprising a connecting piece (610), the connecting piece (610) being movable relative to the base plate (100); an adjusting traction rope (700), one end of the adjusting traction rope (700) being connected to the headless traction rope (500), and the other end of the adjusting traction rope (700) being connected to the connecting piece (610); The endless traction rope (500) is provided with a damper (530); The damper (530) comprises two spliced ​​shells (531), a spliced ​​side of the shell (531) is provided with a wire groove (5311), the two wire grooves (5311) are connected to form a wire hole, the headless traction rope (500) is passed through the wire hole, the shell (531) has a cavity, and vibration-damping particles are provided inside the cavity.

2. The thin-walled workpiece clamping fixture according to claim 1, characterized in that: The headless traction rope (500) comprises a first section (510) and a second section (520), the first section (510) is passed through the line-passing member (310) and the first steering wheel (420), the first end of the first section (510) and the first end of the second section (520) are connected via a first dynamometer (501), the second end of the first section (510) and the second end of the second section (520) are connected via a second dynamometer (502), the second section (520) is connected to the adjustment traction rope (700), and the first dynamometer (501) and the second dynamometer (502) are used to measure the tension applied to the headless traction rope (500).

3. The thin-walled workpiece clamping fixture according to claim 1, characterized in that: The locking assembly (200) includes a pair of connecting seats (210), the connecting seats (210) including a base plate connecting plate (211) and a pressure block connecting plate (212) connected to each other, the base plate connecting plate (211) is connected to the base plate (100), the thin-walled workpiece (10) is clamped between the two pressure block connecting plates (212), a first mounting hole (2121) is provided on the pressure block connecting plate (212), a pressure block (220) is provided in the first mounting hole (2121), and the pressure block (220) can move in a direction close to the thin-walled workpiece (10).

4. The thin-walled workpiece clamping fixture according to claim 1, characterized in that: The clamping assembly (300) includes a connecting body (320), the connecting body (320) includes a wire-passing piece connecting portion (321) and two moving block connecting portions (322), the wire-passing piece (310) is connected to the wire-passing piece connecting portion (321), the two moving block connecting portions (322) are respectively connected to the wire-passing piece connecting portion (321), and the two moving block connecting portions (322) are arranged at intervals, and the interval between the two moving block connecting portions (322) is used to insert the thin-walled workpiece (10), a second mounting hole (3221) is provided on the moving block connecting portion (322), and a moving block (330) is provided in the second mounting hole (3221), and the moving block (330) can move in a direction close to the thin-walled workpiece (10).

5. The thin-walled workpiece clamping fixture according to claim 4, characterized in that: The wire-passing member connecting portion (321) is connected to a connecting shaft (370), the wire-passing member (310) is a pulley rotatably connected to the connecting shaft (370), and the pulley and the endless traction rope (500) are connected in a rolling manner.

6. The thin-walled workpiece clamping fixture according to claim 1, characterized in that: The first steering assembly (400) includes a first base (410), the first steering wheel (420) is rotatably connected to the first base (410), the first base (410) is connected to the base plate (100), and the first steering wheel (420) is used to change the travel direction of the endless traction rope (500).

7. The thin-walled workpiece clamping fixture according to claim 1, characterized in that: The thin-walled workpiece clamping fixture further includes a second steering assembly (800), the second steering assembly (800) including a second base (810) and at least one second steering wheel (820), the second steering wheel (820) being rotatably connected to the second base (810), the second base (810) being connected to the base plate (100), and the second steering wheel (820) being used to change the travel direction of the adjusting traction rope (700).

8. The thin-walled workpiece clamping fixture according to claim 1, characterized in that: The adjustment assembly (600) further comprises a fixed seat (620), a transmission rod (630) and an adjustment base (640), wherein the fixed seat (620) is connected to the base plate (100), the transmission rod (630) is passed through the adjustment base (640) and is threadedly connected to the adjustment base (640), and both ends of the transmission rod (630) are rotatably connected to the fixed seat (620), and the connecting member (610) is arranged on the adjustment base (640), and by rotating the transmission rod (630), the adjustment base (640) can drive the connecting member (610) to move back and forth along the transmission rod (630).

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