A vibration-damping support platform for multi-axis linkage machining of aerospace parts

Abstract

This utility model relates to a vibration-damping support platform for multi-axis linkage machining of aerospace parts, including a base frame. A vibration-damping component is mounted on the top of the base frame, a connecting plate is fixedly mounted on the top of the vibration-damping component, a multi-axis linkage is fixedly mounted on the top of the connecting plate, and a support platform is fixedly mounted on the top of the multi-axis linkage. A central controller is located on one side of the base frame, and a power module is installed inside the central controller. This vibration-damping support platform for multi-axis linkage machining of aerospace parts uses a combination of magnetorheological dampers and shape memory alloy springs. With the intelligent control of the central controller, the viscosity coefficient of the magnetorheological damper can be changed by a current regulator, and the elastic modulus of the shape memory alloy spring can be changed by a temperature control module, specifically suppressing vibrations in different frequency bands and solving the problem of the single vibration isolation method in traditional platforms. Simultaneously, the positioning rod and the connecting frame work together to limit lateral displacement, reducing the impact of vibration transmission.

Description

Technical Field

[0001] This utility model relates to the field of aviation industry technology, specifically to a vibration-damping support platform for multi-axis linkage machining of aviation parts. Background Technology

[0002] In the aerospace industry, aerospace parts (such as engine blades, casings, integral bladed disks, etc.) have complex structures and extremely high precision requirements. They usually require multi-axis linkage machining technology to achieve precision machining of complex curved surfaces, irregular holes, and other features. These parts are mostly made of difficult-to-machine materials such as titanium alloys and high-temperature alloys. During the machining process, they are easily affected by factors such as cutting force fluctuations, equipment vibration, and ground environment vibration, which can lead to excessive surface roughness, reduced dimensional accuracy, and even tool chipping, seriously affecting product quality and production efficiency.

[0003] Existing multi-axis linkage machining equipment support platforms mostly adopt traditional rigid supports or simple vibration isolation structures, which are difficult to effectively cope with multi-frequency vibrations during machining (such as low-frequency ground vibration, medium-frequency equipment resonance, and high-frequency cutting chatter). Specifically, traditional support platforms have the following shortcomings: First, the vibration isolation method is singular, mostly relying on springs or dampers with fixed stiffness, and cannot adaptively adjust the vibration isolation parameters according to different machining conditions (such as rough milling and fine boring), resulting in insufficient vibration resistance during heavy-load machining and poor vibration isolation effect during precision machining; Second, the integration of the sensing and control system is low, lacking real-time acquisition and analysis of vibration and load signals during machining, making it difficult to achieve dynamic optimization of vibration prevention strategies; Third, the design of the connection structure of each component is unreasonable, which can easily lead to loss of multi-axis linkage accuracy due to installation errors or vibration transmission, further affecting the machining quality.

[0004] Therefore, a vibration-damping support platform for multi-axis linkage machining of aerospace parts is proposed to solve the aforementioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a vibration-damping support platform for multi-axis linkage machining of aerospace parts. It has advantages such as strong adaptive vibration damping capability and solves the problem that traditional platforms rely on springs or dampers with fixed parameters and cannot adapt to different working conditions such as rough milling and fine boring.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibration-damping support platform for multi-axis linkage machining of aerospace parts, comprising a base frame, a vibration-damping component installed on the top of the base frame, a connecting plate fixedly installed on the top of the vibration-damping component, a multi-axis linkage fixedly installed on the top of the connecting plate, a support platform fixedly installed on the top of the multi-axis linkage, a central controller provided on one side of the base frame, a power module installed inside the central controller, a signal conditioning module installed on the side of the multi-axis linkage via a bracket, a spindle load sensor installed on the connecting flange between the spindle motor and the spindle box of the multi-axis linkage, and a vibration spectrum analyzer fixed to the bottom edge of the support platform by bolts;

[0007] The vibration damping assembly includes mounting plates bolted to the four corners of the top of the base frame, magnetorheological dampers fixedly mounted on the top of each of the four mounting plates, shape memory alloy springs sleeved on the surface of each of the four magnetorheological dampers, horizontal plates bolted to the top of the base frame on both sides of the connecting plate, positioning rods welded to the top of each of the two horizontal plates, and connecting frames fixedly mounted on both sides of the connecting plate.

[0008] Preferably, the base frame is made of welded steel profiles, and adjustable feet are bolted to the four corners of the bottom of the base frame.

[0009] Preferably, the cylinders of the four magnetorheological dampers are connected to the mounting plate via flanges, and the top of the piston rods of the four magnetorheological dampers are connected to the bottom of the connecting plate via spherical hinges, and the stroke of the four magnetorheological dampers is 50-80mm.

[0010] Preferably, each of the four shape memory alloy springs has a connecting lug welded to both ends, with one lug bolted to the mounting plate and the other lug bolted to the bottom of the connecting plate.

[0011] Preferably, the central controller is also equipped with a current regulator, which is connected to the central controller and four magnetorheological dampers via cables, and the current regulator is located on one side of the power module.

[0012] Preferably, the vibration damping assembly further includes four temperature control modules, which are respectively installed on the outside of four shape memory alloy springs. All four temperature control modules are connected to the central controller via cables, and the temperature control modules are fixed to the mounting plate with bolts.

[0013] Preferably, the signal conditioning module is connected to the spindle load sensor, vibration spectrum analyzer and central controller via shielded cables.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. This multi-axis linkage machining vibration-damping support platform for aerospace parts uses a combination of magnetorheological dampers and shape memory alloy springs. With the intelligent control of the central controller, the viscosity coefficient of the magnetorheological damper can be changed by the current regulator, and the elastic modulus of the shape memory alloy spring can be changed by the temperature control module. This can specifically suppress vibrations in different frequency bands, solving the problem of the single vibration isolation method of traditional platforms. At the same time, the positioning rod and the connecting frame work together to limit lateral displacement, reduce the impact of vibration transmission, significantly improve the stability of multi-axis linkage machining, and ensure the machining accuracy of aerospace parts.

[0016] 2. This multi-axis linkage machining vibration-damping support platform for aerospace parts uses a spindle load sensor to detect torque changes at the spindle connection flange in real time, and a vibration spectrum analyzer to collect machining vibration signals from the support platform. Both signals are processed by a signal conditioning module and then transmitted to a central controller to achieve real-time vibration monitoring. The central controller, combined with a preset program, quickly analyzes the working conditions and adjusts the vibration-damping components to avoid machining errors caused by sensor lag, ultimately improving the machining quality and efficiency of aerospace parts. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the vibration-damping support platform structure for multi-axis linkage machining of aerospace parts according to this utility model;

[0018] Figure 2 This is an enlarged view of a partial structure of the vibration-damping support platform for multi-axis linkage machining of aerospace parts according to this utility model;

[0019] Figure 3 This is a schematic diagram of the vibration-damping support platform structure for multi-axis linkage machining of aerospace parts according to this utility model;

[0020] Figure 4 This is a schematic diagram of the central controller and power module structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the circuit control for the vibration-damping support platform for multi-axis linkage machining of aerospace parts according to this utility model.

[0022] In the diagram: 1. Base frame; 2. Vibration damping component; 201. Mounting plate; 202. Magnetorheological damper; 203. Shape memory alloy spring; 204. Horizontal plate; 205. Positioning rod; 206. Connecting frame; 3. Connecting plate; 4. Multi-axis linkage; 5. Support platform; 6. Central controller; 7. Power module; 8. Signal conditioning module; 9. Spindle load sensor; 10. Vibration spectrum analyzer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This embodiment of a multi-axis linkage machining anti-vibration support platform for aerospace parts includes a base frame 1, an anti-vibration component 2 installed on the top of the base frame 1, a connecting plate 3 fixedly installed on the top of the anti-vibration component 2, a multi-axis linkage 4 fixedly installed on the top of the connecting plate 3, a support platform 5 fixedly installed on the top of the multi-axis linkage 4, a central controller 6 provided on one side of the base frame 1, a power module 7 installed inside the central controller 6, a signal conditioning module 8 installed on the side of the multi-axis linkage 4 via a bracket, a spindle load sensor 9 installed on the connecting flange between the spindle motor and the spindle box of the multi-axis linkage 4, and a vibration spectrum analyzer 10 fixed to the bottom edge of the support platform 5 by bolts.

[0025] The vibration damping component 2 includes mounting plates 201 bolted to the top four corners of the base frame 1, magnetorheological dampers 202 fixedly mounted on the top of each of the four mounting plates 201, shape memory alloy springs 203 sleeved on the surface of each of the four magnetorheological dampers 202, horizontal plates 204 bolted to the top of the base frame 1 on the left and right sides of the connecting plate 3, positioning rods 205 welded to the top of each of the two horizontal plates 204, and connecting frames 206 fixedly mounted on the left and right sides of the connecting plate 3.

[0026] In this embodiment, during machining, the spindle load sensor 9 detects the torque change at the connection flange between the spindle motor and the spindle box in real time, and the vibration spectrum analyzer 10 collects machining vibration signals through the installation position at the bottom of the support platform 5. Both transmit the raw signals to the signal conditioning module 8 on the side bracket of the multi-axis linkage 4 for processing. The processed signal is sent to the central controller 6 on one side of the base frame 1. The central controller 6 analyzes the working conditions in conjunction with the preset program, controls the current of the magnetorheological damper 202 in the anti-vibration component 2 through the internal current regulator to change its viscosity coefficient, and at the same time instructs the temperature control module on the outside of the shape memory alloy spring 203 to adjust the temperature to change the elastic modulus. During this process, the positioning rod 205 on the top horizontal plate 204 of the base frame 1 cooperates with the connecting frame 206 on both sides of the connecting plate 3 to limit lateral displacement. The power module 7 inside the central controller 6 supplies power to the entire system, realizing the synergy of dynamic vibration isolation and multi-axis linkage machining.

[0027] This platform, through the combination of magnetorheological damper 202 and shape memory alloy spring 203, and with the intelligent control of central controller 6, can specifically suppress vibrations in different frequency bands, solving the problem of the single vibration isolation method of traditional platforms and greatly improving processing stability. The integration of spindle load sensor 9, vibration spectrum analyzer 10 and signal conditioning module 8 realizes real-time monitoring and precise control of vibration, avoiding processing errors caused by sensing lag. The cooperation between positioning rod 205 and connecting frame 206 and the reliable connection of each component reduce the impact of installation errors and vibration transmission, ensuring the processing accuracy of multi-axis linkage 4, and ultimately improving the processing quality and efficiency of aerospace parts.

[0028] The cylinders of the four magnetorheological dampers 202 are all connected to the mounting plate 201 via flanges, and the top of the piston rods of the four magnetorheological dampers 202 are all connected to the bottom of the connecting plate 3 via spherical hinges. The stroke of the four magnetorheological dampers 202 is 50-80mm.

[0029] In this embodiment, the cylinders of the four magnetorheological dampers 202 are connected to the mounting plate 201 via flanges, and the top of the piston rod is connected to the bottom of the connecting plate 3 via a spherical hinge. This connection method, combined with a stroke of 50-80mm, ensures the rigidity of the connection to stably support the weight of the multi-axis linkage 4 and the support platform 5. At the same time, the spherical hinge allows for fine adjustment within a range of ±5°, which can compensate for installation errors and small displacements caused by vibration, and avoid component damage caused by stress concentration due to rigid connection. Meanwhile, the appropriate stroke range can effectively buffer vibration and impact under different processing conditions.

[0030] Each of the four shape memory alloy springs 203 has a connecting lug welded to both ends. One lug is bolted to the mounting plate 201, and the other lug is bolted to the bottom of the connecting plate 3.

[0031] In this embodiment, four shape memory alloy springs 203 are welded to two end plates and bolted to the bottom of the mounting plate 201 and the connecting plate 3, respectively. This detachable connection structure facilitates the individual replacement and maintenance of the springs, reducing the later maintenance cost. The bolted connection method can ensure the stability of the springs under force and avoid the stiffness adjustment effect due to loose connection. This ensures that when it works in conjunction with the magnetorheological damper 202, it can stably and accurately control the stiffness of the anti-vibration component 2 and improve the overall anti-vibration performance of the platform.

[0032] The central controller 6 is also equipped with a current regulator, which is connected to the central controller 6 and the four magnetorheological dampers 202 via cables, and the current regulator is located on the side of the power module 7.

[0033] In this embodiment, the central controller 6 can precisely regulate the current supplied to the four magnetorheological dampers 202 with the help of the current regulator, so that the magnetorheological dampers 202 can flexibly change the damping force according to actual needs, thereby improving the stability and adaptability of the equipment operation; at the same time, the current regulator is close to the power module 7, which can shorten the current transmission path, reduce energy loss, and ensure power supply efficiency.

[0034] The vibration damping component 2 also includes four temperature control modules, which are respectively installed on the outside of the four shape memory alloy springs 203. All four temperature control modules are connected to the central controller 6 via cables, and the temperature control modules are fixed to the mounting plate 201 with bolts.

[0035] In this embodiment, the four temperature control modules correspond to the four shape memory alloy springs 203, which can accurately regulate their temperature, allowing the shape memory alloy springs 203 to flexibly change their elastic properties according to temperature changes, thereby enhancing the adaptability of the anti-vibration component 2; and the temperature control modules are connected to the central controller 6, which can realize intelligent temperature control.

[0036] In summary, this multi-axis linkage machining vibration-damping support platform for aerospace parts utilizes a combination of a magnetorheological damper 202 and a shape memory alloy spring 203. With the intelligent control of the central controller 6, the viscosity coefficient of the magnetorheological damper 202 can be changed via a current regulator, and the elastic modulus of the shape memory alloy spring 203 can be changed via a temperature control module. This allows for targeted suppression of vibrations in different frequency bands, solving the problem of the single vibration isolation method in traditional platforms. Simultaneously, the positioning rod 205 and the connecting frame 206 work together to limit lateral displacement, reducing the impact of vibration transmission and significantly improving the stability of multi-axis linkage machining, thus ensuring the machining accuracy of aerospace parts.

[0037] Furthermore, the spindle load sensor 9 detects the torque change at the spindle connection flange in real time, and the vibration spectrum analyzer 10 collects the processing vibration signal of the support platform 5. Both are processed by the signal conditioning module 8 and transmitted to the central controller 6 to realize real-time vibration monitoring. The central controller 6 combines the preset program to quickly analyze the working conditions and adjust the anti-vibration component 2 to avoid processing errors caused by sensor lag, and ultimately improve the processing quality and efficiency of aerospace parts.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-vibration support platform for multi-axis linkage machining of an aeronautical part, comprising a base frame (1), characterized in that: The base frame (1) is equipped with a vibration damping component (2) on top, a connecting plate (3) is fixedly installed on top of the vibration damping component (2), a multi-axis linkage (4) is fixedly installed on top of the connecting plate (3), a support platform (5) is fixedly installed on top of the multi-axis linkage (4), a central controller (6) is provided on one side of the base frame (1), a power module (7) is installed inside the central controller (6), a signal conditioning module (8) is installed on the side of the multi-axis linkage (4) through a bracket, a spindle load sensor (9) is installed on the connecting flange between the spindle motor and the spindle box of the multi-axis linkage (4), and a vibration spectrum analyzer (10) is fixed to the bottom edge of the support platform (5) by bolts. The vibration damping component (2) includes mounting plates (201) bolted to the top four corners of the base frame (1), magnetorheological dampers (202) fixedly mounted on the top of the four mounting plates (201), shape memory alloy springs (203) sleeved on the surface of the four magnetorheological dampers (202), horizontal plates (204) bolted to the top of the base frame (1) on the left and right sides of the connecting plate (3), positioning rods (205) welded to the top of the two horizontal plates (204), and connecting frames (206) fixedly mounted on the left and right sides of the connecting plate (3).

2. The vibration isolation support platform for multi-axis machining of an aircraft part of claim 1, wherein: The base frame (1) is made of welded steel, and adjustable feet are installed at the four corners of the bottom of the base frame (1) by bolts.

3. The vibration isolation support platform for multi-axis machining of an aircraft part of claim 1, wherein: The cylinders of the four magnetorheological dampers (202) are connected to the mounting plate (201) via flanges, and the top of the piston rods of the four magnetorheological dampers (202) are connected to the bottom of the connecting plate (3) via spherical hinges, and the stroke of the four magnetorheological dampers (202) is 50-80mm.

4. The vibration isolation support platform for multi-axis machining of an aircraft part of claim 1, wherein: The four shape memory alloy springs (203) are all welded to both ends with connecting lugs. One lug is bolted to the mounting plate (201), and the other lug is bolted to the bottom of the connecting plate (3).

5. The vibration isolation support platform for multi-axis machining of an aircraft part of claim 1, wherein: The central controller (6) is also equipped with a current regulator. The current regulator is connected to the central controller (6) and four magnetorheological dampers (202) via cables, and the current regulator is located on the side of the power module (7).

6. The vibration isolation support platform for multi-axis machining of an aircraft part of claim 1, wherein: The vibration damping component (2) also includes four temperature control modules, which are respectively installed on the outside of four shape memory alloy springs (203). All four temperature control modules are connected to the central controller (6) via cables, and the temperature control modules are fixed to the mounting plate (201) by bolts.

7. The vibration isolation support platform for multi-axis machining of an aircraft part of claim 1, wherein: The signal conditioning module (8) is connected to the spindle load sensor (9), vibration spectrum analyzer (10) and central controller (6) respectively via shielded cables.

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