Vibration suppression device in gas turbine blade machining process

Abstract

The utility model discloses a vibration suppression device in the gas turbine blade machining process. The vibration suppression device comprises a base. The bottom table assembly comprises a bottom plate movably arranged at the top of the base, a rubber plate arranged at the top of the bottom plate and a top plate arranged at the top of the rubber plate; the vibration suppression clamping base comprises a clamping frame fixed to the top of the top plate, hydraulic rods symmetrically and movably connected to the two sides of the clamping frame, and fixing sleeves fixed to the surface of the clamping frame and arranged at the outer ends of the hydraulic rods in a sleeving mode. Through the fixing sleeve, the damper and other structures arranged at the outer end of the hydraulic rod, the hydraulic rod has a certain elastic adjusting capacity, and the rubber ferrule and the rubber plate are elastic, so that when vibration occurs, on one hand, energy generated in vibration can be absorbed and weakened, and on the other hand, vibration is reduced; and on the other hand, the damper can apply restraining force in the direction opposite to the vibration direction to the hydraulic rod, so that the vibration amplitude is weakened, and therefore under the cooperation of the structure, the good restraining and weakening effect on the vibration of the blade can be achieved, and smooth proceeding of machining work is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of gas turbine parts processing technology, specifically relating to a vibration suppression device in the gas turbine blade processing process. Background Technology

[0002] A gas turbine is an advanced power machine that uses a continuously flowing gas as its working fluid to convert the chemical energy of fuel into mechanical energy. It boasts advantages such as high power output, high efficiency, rapid start-up, and stable operation, and is widely used in power generation, aviation, and shipbuilding. Blades are a key component of a gas turbine. Compressor blades rotate to perform work on the air, increasing its pressure to provide high-pressure air for combustion. Turbine blades utilize the energy of the high-temperature, high-pressure gas to drive the rotor, outputting mechanical work. Together, they ensure the efficient operation of the gas turbine. The machining accuracy of the blades directly affects the performance and reliability of the gas turbine. During machining, the blades must first be clamped and fixed, and then various machining operations are performed on their surface using specific tools. During this process, the blades are prone to vibration due to cutting forces or machine tool vibrations.

[0003] Vibrations generated during machining can alter the relative position between the cutting tool and the blade, leading to a decrease in the dimensional and surface shape accuracy of the blade, making it difficult to meet the high precision requirements of gas turbine blades. Secondly, vibration reduces the surface quality of the blade. Vibration can cause tool chatter, leaving vibration marks on the blade surface, increasing surface roughness, affecting the aerodynamic performance of the blade, and consequently reducing the overall efficiency of the gas turbine. Furthermore, vibration accelerates tool wear. Vibration subjectes the tool to alternating loads, easily leading to tool chipping and accelerated wear, increasing tool replacement frequency and machining costs, while also affecting machining efficiency. Severe vibration may even cause equipment failure, jeopardizing the safety of the machining process. Therefore, a vibration suppression device needs to be designed to address this problem. Utility Model Content

[0004] The purpose of this invention is to provide a vibration suppression device for the processing of gas turbine blades, in order to solve the problem mentioned in the background art that blades are prone to vibration during processing, which is not conducive to the smooth progress of processing work.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vibration suppression device during the processing of gas turbine blades, comprising...

[0006] Base;

[0007] The base assembly includes a base plate movably mounted on top of the base, a rubber plate mounted on top of the base plate, and a top plate mounted on top of the rubber plate.

[0008] The vibration damping clamp includes a clamping frame fixed to the top of the top plate, hydraulic rods symmetrically and movably connected to both sides of the clamping frame, a fixing sleeve fixed to the surface of the clamping frame and fitted over the outer end of the hydraulic rod, a damper fixed inside the fixing sleeve and abutting against the outer end of the hydraulic rod, two fixing plates fixed to the surface of the hydraulic rod, and a rubber sleeve fitted over the surface of the hydraulic rod and located between the fixing plates and the clamping frame.

[0009] Preferably, the base assembly further includes bolts, and the base plate, rubber plate and top plate are fixedly connected by bolts.

[0010] Preferably, the vibration damping clamp further includes a rubber pad, which is fixed to the inner side of the bottom end of the clamping frame.

[0011] Preferably, the vibration damping clamp further includes a clamping head, which is connected to the inner end of the hydraulic rod, and the inner end of the hydraulic rod and the clamping head are movably connected by a ball-and-socket structure.

[0012] Preferably, the two fixing plates are located on the inner and outer sides of the clamping frame, respectively, and the two sides of the rubber sleeve are in contact with the fixing plates and the clamping frame.

[0013] Preferably, the base is provided with a drive assembly, which includes a connecting frame slidably disposed inside the base, a lead screw threadedly connected to the connecting frame, and a motor fixedly connected to one end of the lead screw.

[0014] Preferably, the connecting frame has a U-shaped structure, with the top of both ends fixedly connected to the base plate, and the motor is installed on one side of the base.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By using a fixed sleeve and damper at the outer end of the hydraulic rod, the hydraulic rod has a certain degree of elastic adjustment capability. Both the rubber sleeve and the rubber plate are elastic. When vibration occurs, on the one hand, they can absorb and weaken the energy generated by the vibration, and on the other hand, the damper can apply a suppressive force to the hydraulic rod in the opposite direction of the vibration, thereby weakening the vibration amplitude. Therefore, with the cooperation of the above structures, the vibration of the blade can be effectively suppressed and weakened, ensuring the smooth progress of the processing work. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a side sectional view of the vibration suppression clamp of this utility model;

[0019] Figure 3 This is a cross-sectional view of the hydraulic rod of this utility model;

[0020] Figure 4 This is an exploded view of one end of the base assembly of this utility model;

[0021] Figure 5 This is a three-dimensional schematic diagram of the drive component of this utility model;

[0022] In the diagram: 100, base; 200, base assembly; 201, base plate; 202, rubber plate; 203, top plate; 204, bolt; 300, vibration damping clamp; 301, clamping frame; 302, rubber pad placement; 303, hydraulic rod; 304, clamping head; 305, fixing sleeve; 306, damper; 307, fixing plate; 308, rubber collar; 400, drive assembly; 401, connecting frame; 402, lead screw; 403, motor. 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] Example

[0025] Please see Figures 1 to 5 This embodiment provides a technical solution: a vibration suppression device during the processing of gas turbine blades, comprising...

[0026] Base 100;

[0027] The base assembly 200 includes a base plate 201 movably disposed on top of the base 100, a rubber plate 202 disposed on top of the base plate 201, and a top plate 203 disposed on top of the rubber plate 202. The base assembly 200 is composed of the base plate 201, the rubber plate 202, and the top plate 203. The rubber plate 202 inside is elastic and can absorb and weaken vibrations. There are two base assemblies 200.

[0028] The vibration suppression clamp 300 includes a clamping frame 301 fixed to the top of the top plate 203, hydraulic rods 303 symmetrically and movably connected to both sides of the clamping frame 301, a fixing sleeve 305 fixed to the surface of the clamping frame 301 and sleeved on the outer end of the hydraulic rods 303, a damper 306 fixed inside the fixing sleeve 305 and abutting against the outer end of the hydraulic rods 303, two fixing pieces 307 fixed to the surface of the hydraulic rods 303, and a rubber collar 308 sleeved on the surface of the hydraulic rods 303 and located between the fixing pieces 307 and the clamping frame 301. The blade can be placed between the two hydraulic rods 303 for clamping. Vibration will be generated during processing. The flexible rubber collar 308 can absorb and weaken the vibration, while the damper 306 can generate a suppressive force on the vibration, thereby playing the role of suppressing vibration.

[0029] In this embodiment, preferably, the base assembly 200 further includes bolts 204. The base plate 201, rubber plate 202 and top plate 203 are fixedly connected by bolts 204. The bolts 204 fix the base plate 201, rubber plate 202 and top plate 203 to ensure a stable connection between the three and prevent misalignment or displacement between them.

[0030] In this embodiment, preferably, the vibration suppression clamp 300 further includes a rubber pad 302, which is fixed to the inner side of the bottom end of the clamping frame 301. Before clamping the blade, the bottom of the blade can be placed on the rubber pad 302 to avoid wear on the bottom of the blade.

[0031] In this embodiment, preferably, the vibration suppression clamp 300 further includes a clamping head 304, which is connected to the inner end of the hydraulic rod 303. The inner end of the hydraulic rod 303 and the clamping head 304 are movably connected through a ball-and-socket structure. The clamping head 304 can clamp the blade. Through the ball-and-socket structure, the clamping head 304 can be adjusted in various directions to adapt to the curvature of the blade surface and ensure stable clamping of the blade.

[0032] In this embodiment, preferably, the two fixing plates 307 are located on the inner and outer sides of the clamping frame 301, respectively. The rubber sleeves 308 are in contact with the fixing plates 307 and the clamping frame 301 on both sides. The two fixing plates 307 can also limit the hydraulic rod 303 to prevent it from displacing excessively. The rubber sleeves 308 can buffer and block the movement of the hydraulic rod 303, thereby absorbing and weakening the vibration.

[0033] In this embodiment, preferably, a drive assembly 400 is provided inside the base 100. The drive assembly 400 can drive the vibration suppression clamp 300 to move. The drive assembly 400 includes a connecting frame 401 slidably disposed inside the base 100, a lead screw 402 threadedly connected to the connecting frame 401, and a motor 403 fixedly connected to one end of the lead screw 402. The connecting frame 401 has a U-shaped structure, and the tops of both ends are fixedly connected to the base plate 201. The motor 403 is installed on one side of the base 100. The motor 403 drives the lead screw 402 to move, thereby driving the connecting frame 401 and the base assembly 200 on it to move.

[0034] Working principle: When machining the blade, the position of the vibration suppression clamps 300 on both sides needs to be adjusted first. The motors 403 on both sides can be started, driving the lead screws 402 to rotate, thereby driving the connecting frame 401 to move, which in turn moves the base assembly 200 along with the vibration suppression clamps 300 on it. Then, the blade is placed between the clamping heads 304 on both sides, with the bottom of the blade resting on the rubber pad 302. The hydraulic rod 303 is then controlled to push the clamping heads 304, using the clamping heads 304 on both sides to firmly clamp and fix the blade in the middle. The clamping heads 304 and the hydraulic rod 303 are movably connected, so the hydraulic rod 304 can adaptively adjust its angle to ensure stable contact with the blade surface and guarantee clamping stability. Afterwards, the blade surface can be machined using a cutting tool. Vibration is inevitable during the machining process. Since the hydraulic rod 303 is movably mounted on the clamping frame 301 and a damper 306 is provided at the tail end of the hydraulic rod 303, it can absorb and weaken the vibration force on the one hand, and automatically generate a damping force to suppress the vibration on the other hand. The rubber ring 308 between the clamping frame 301 and the fixing plate 307 is also elastic, so it can further weaken the vibration. Finally, the remaining weak vibration is transmitted to the bottom of the clamping frame 301 and will eventually be absorbed by the rubber plate 202, thus weakening the vibration again. With the cooperation of the above structures, the vibration generated during the machining process is greatly reduced. On the one hand, it can ensure the accuracy of the machining process, and on the other hand, it can protect the cutting tools used for machining, which is conducive to the smooth progress of the machining work.

[0035] Although embodiments of the present invention have been shown and described (see the detailed description above), 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. A vibration suppression device during the processing of gas turbine blades, characterized in that: include Base (100); The base assembly (200) includes a base plate (201) movably disposed on top of the base (100), a rubber plate (202) disposed on top of the base plate (201), and a top plate (203) disposed on top of the rubber plate (202). The vibration damping clamp (300) includes a clamping frame (301) fixed to the top of the top plate (203), hydraulic rods (303) symmetrically and movably connected to both sides of the clamping frame (301), a fixing sleeve (305) fixed to the surface of the clamping frame (301) and sleeved on the outer end of the hydraulic rod (303), a damper (306) fixed inside the fixing sleeve (305) and abutting against the outer end of the hydraulic rod (303), two fixing plates (307) fixed to the surface of the hydraulic rod (303), and a rubber sleeve (308) sleeved on the surface of the hydraulic rod (303) and located between the fixing plates (307) and the clamping frame (301).

2. The vibration suppression device during the processing of gas turbine blades according to claim 1, characterized in that: The base assembly (200) also includes bolts (204), and the base plate (201), rubber plate (202) and top plate (203) are fixedly connected by bolts (204).

3. The vibration suppression device for gas turbine blade processing according to claim 2, characterized in that: The vibration damping clamp (300) also includes a rubber pad (302) which is fixed to the inner side of the bottom end of the clamping frame (301).

4. The vibration suppression device for gas turbine blade processing according to claim 3, characterized in that: The vibration suppression clamp (300) also includes a clamping head (304), which is connected to the inner end of the hydraulic rod (303). The inner end of the hydraulic rod (303) and the clamping head (304) are movably connected through a ball-and-socket structure.

5. The vibration suppression device for gas turbine blade processing according to claim 4, characterized in that: The two fixing pieces (307) are located on the inner and outer sides of the clamping frame (301), respectively, and the rubber sleeve (308) is in contact with the fixing pieces (307) and the clamping frame (301) on both sides.

6. A vibration suppression device for gas turbine blade processing according to claim 5, characterized in that: The base (100) is provided with a drive assembly (400), which includes a connecting frame (401) slidably disposed inside the base (100), a lead screw (402) threadedly connected to the connecting frame (401), and a motor (403) fixedly connected to one end of the lead screw (402).

7. A vibration suppression device for the processing of gas turbine blades according to claim 6, characterized in that: The connecting frame (401) has a U-shaped structure, and the top of both ends is fixedly connected to the base plate (201). The motor (403) is installed on one side of the base (100).

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