An adaptively adjustable stator blade wire EDM fixture
By using an adaptive stator blade wire EDM fixture with components such as a limit plate, pressure plate, and electric push rod, the problems of stator blade wear and deterioration of positioning accuracy during processing are solved, thereby improving clamping stability and cutting accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI DONGXIONGJINYING TECH
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-17
AI Technical Summary
Stator blades are prone to wear during processing, resulting in poor positioning accuracy and thus poor cutting performance.
The stator blade wire EDM fixture, which adopts adaptive adjustment, includes a fixed frame, a support plate, a three-dimensional moving mechanism, and a cutting mechanism. Through components such as a limit plate, a pressure plate, an electric push rod, and a clamping block, it achieves multi-point contact and a detachable clamping block structure, adapting to the curvature changes of the blade blank and improving clamping stability and accuracy.
It improves the wear resistance of stator blades, maintains stable clamping force, reduces poor cutting problems caused by wear and poor positioning accuracy, and improves processing accuracy and efficiency.
Smart Images
Figure CN224508642U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stator blade processing technology, specifically to an adaptively adjustable stator blade wire cutting fixture. Background Technology
[0002] Stator blades are components of power plants such as aero engines, also known as stator blades. They are usually composed of several rows of blades fixed on the casing. Each row of blades is called a rectifier, and these blades are called rectifier blades or stator blades. Stator blades can be cut by wire cutting during the manufacturing process, which can improve the adaptability to materials and has high processing efficiency.
[0003] According to Chinese Patent Publication No. CN222448400U, entitled "A Fixture for Grinding Stator Blades," the main feature described is that when it is necessary to fix a stator blade, the stator blade is placed on a fixed seat. With the help of a rotating shaft, a fixed plate, a force-bearing arc plate, a hydraulic device, a baffle, an elastic rod, a clamping rod, and a limiting wheel, the rotation of the rotating shaft and the fixed plate is restricted, preventing excessive clamping of the stator blade and improving the protection of the stator blade. Common stator blades require drilling wire holes in the blank before wire cutting. With the help of a fixture, the stator blade blank can be cut into shape. A partition is needed on one side of the stator blade to provide support for multiple blades. The guide blade holding ring is formed by connecting multiple partitions. However, stator blades are prone to wear during processing, resulting in decreased positioning accuracy. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides an adaptively adjustable stator blade wire EDM fixture to improve the wear resistance of the adaptive fixture, maintain stable clamping force, and reduce poor blade cutting results caused by poor clamping accuracy.
[0005] The technical solution adopted by this utility model to solve the technical problem is: an adaptive adjustable stator blade wire cutting fixture, including a fixed frame, a support plate, a three-dimensional moving mechanism, and a cutting mechanism. A drive motor is fixedly connected to the bottom end of the fixed frame, and a rotating rod is fixedly connected to the output end of the drive motor. A cross-shaped limiting strip is fixedly connected to the upper end of the rotating rod, and a gear disk is sleeved on the upper end of the cross-shaped limiting strip. The upper end of the gear disk contacts the limiting disk, and the rotating rod is inserted into the limiting disk. A rough blank limiting groove is opened on one side of the limiting disk, and the rotating rod... A pressure plate is threaded to the end, and a sliding ball is rotatably embedded on all four sides of the bottom end of the pressure plate. The bottom side of the sliding ball contacts the upper end of the limiting plate. An arc-shaped rod is fixedly connected to one side of the fixed frame. The center of the arc-shaped rod coincides with the center of the limiting plate. A slider is sleeved on the arc-shaped rod. An electric push rod is fixedly connected to the side of the slider near the limiting plate. A triangular block is fixedly connected to the output end of the electric push rod. A locking block contacts one side of the triangular block. A limiting rod is fixedly connected to the side of the locking block near the arc-shaped rod. A fixing ring is threadedly connected to the limiting rod.
[0006] As a preferred technical solution of this utility model, anti-slip rods are fixedly connected to the six mutually spaced sides of the pressure plate. The bottom end of the anti-slip rod contacts the upper end of the limiting plate. By setting the anti-slip rods, the offset of the partition on one side of the stator blade can be reduced.
[0007] As a preferred technical solution of this utility model, a metal mesh cover is fixedly connected to the bottom end of the limiting plate, and the bottom end of the metal mesh cover is fixedly connected to the fixed frame. By setting the metal mesh cover, the impact of debris in the water inside the fixed frame on the rotation of the gear can be reduced.
[0008] As a preferred technical solution of this utility model, a pneumatic push rod is fixedly connected to one side of the fixed frame. The output end of the pneumatic push rod meshes with the gear disk. By setting the pneumatic push rod, the rotation of the gear disk can be limited.
[0009] As a preferred technical solution of this utility model, a support rod is contacted on one side of the fixed frame. The support rod is fixedly connected to one side of the electric push rod. By setting the support rod, the stability of the electric push rod in limiting the stator blade can be improved. This utility model has the following advantages: by setting an adjustable-height pressure plate in the fixed frame in conjunction with a gear plate and a limiting plate, the stator blade blank can be limited, and then a rough blank is formed by wire cutting. At the same time, the arc-shaped rod can adjust the position of the electric push rod and the clamping block, and can adjust the contact surface with the rough blank as the processing progresses, which can improve the adaptability of the stator blade, thereby facilitating wire cutting. Furthermore, the detachable clamping block structure can adapt to the arc surface of the rough blank, making it easy to replace the clamping block and improving the processing accuracy of the contact surface. Attached Figure Description
[0010] Figure 1This is a side sectional view of a preferred embodiment of the present invention, showing an adaptively adjustable stator blade wire cutting fixture. Figure 2 This is a three-dimensional structural diagram of the limiting disk of an adaptively adjustable stator blade wire cutting fixture according to a preferred embodiment of the present invention. Figure 3 This is a three-dimensional structural diagram of the triangular block of an adaptively adjustable stator blade wire cutting fixture according to a preferred embodiment of the present invention. Figure 4 This is an enlarged structural diagram of point A of a preferred embodiment of an adaptively adjustable stator blade wire cutting fixture of this utility model. Reference numerals: 1. Fixed frame; 2. Support plate; 3. Three-dimensional moving mechanism; 4. Cutting mechanism; 5. Rotating rod; 6. Cross-shaped limiting strip; 7. Gear disk; 8. Limiting disk; 9. Rough blank limiting groove; 10. Pressure plate; 11. Arc-shaped rod; 12. Slider; 13. Electric push rod; 14. Triangular block; 15. Locking block; 16. Limiting rod; 17. Fixed ring; 18. Anti-slip rod; 19. Pneumatic push rod; 20. Metal mesh cover; 21. Support rod; 22. Sliding ball. Detailed Implementation
[0011] The present invention will be further described below with reference to the accompanying drawings.
[0012] Please refer to the following: Figure 1-4The adaptive adjustable stator blade wire EDM fixture shown includes a fixed frame 1, a support plate 2, a three-dimensional moving mechanism 3, and a cutting mechanism 4. The three-dimensional moving mechanism 3 includes three servo motors, two screws, two slide plates, and an electric telescopic rod. A drive motor is fixedly connected to the bottom of the fixed frame 1, which can rotate the rotating rod 5, thereby aligning the stator blade blank with the resistance wire of the cutting mechanism 4. The cutting mechanism 4 includes an electrode wire and a pulse current system, and is also cooled by a coolant. The output end of the drive motor is fixedly connected to the support plate 2. A rotating rod 5 is fixedly connected to the upper end of the rotating rod 5, and a cross-shaped limiting strip 6 is fixedly connected to the upper end of the cross-shaped limiting strip 6. A gear disk 7 is sleeved on the upper end of the cross-shaped limiting strip 6. The gear disk 7 has two arc-shaped grooves. Under gravity, the gear disk 7 engages with the cross-shaped limiting strip 6, providing a drive for the rotation of the limiting disk 8 and the stator blade blank. The upper end of the gear disk 7 contacts the limiting disk 8, and the rotating rod 5 is inserted into the limiting disk 8. A blank limiting groove 9 is opened on one side of the limiting disk 8. The blank limiting groove 9 connects with the stator blade blank, and then the anti-slip rod 18 limits the rotation of the stator blade blank. A pressure plate 10 is threaded to the upper end of rod 5. Sliding balls 22 are rotatably embedded on all four sides of the bottom of pressure plate 10. The bottom of the sliding balls 22 contacts the upper end of the limiting plate 8. An arc-shaped rod 11 is fixedly connected to one side of the fixed frame 1. A slider 12 is positioned on the arc-shaped rod 11 and can be manually adjusted to change the contact surface between the locking block 15 and the stator blade blank. The center of the arc-shaped rod 11 coincides with the center of the limiting plate 8. A slider 12 is sleeved on the arc-shaped rod 11. An electric push rod 13 is fixedly connected to the side of the slider 12 closest to the limiting plate 8. The extension and contraction allow the locking block 15 to contact the stator blade blank, and at the same time, it can limit the cut groove after the cutting mechanism 4 cuts, maintaining the contact surface. The output end of the electric push rod 13 is fixedly connected to a triangular block 14, and one side of the triangular block 14 contacts the locking block 15. The side of the locking block 15 near the arc rod 11 is fixedly connected to a limiting rod 16, and a fixing ring 17 is threaded on the limiting rod 16. Different locking blocks 15 can be replaced by removing the fixing ring 17, thereby achieving the effect of stable contact with the stator blade blank.
[0013] Among them, anti-slip rods 18 are fixedly connected to the six mutually spaced sides of the pressure plate 10. The bottom end of the anti-slip rod 18 contacts the upper end of the limiting plate 8. By setting the anti-slip rod 18, the pressure plate 10 and the limiting plate 8 can be kept stable.
[0014] Among them, a metal mesh cover 20 is fixedly connected to the bottom of the limiting plate 8. The bottom of the metal mesh cover 20 is fixedly connected to the fixed frame 1. By setting the metal mesh cover 20, the contact of cutting debris with the gear plate 7 is reduced, thus reducing the impact on the rotation of the limiting plate 8.
[0015] A pneumatic push rod 19 is fixedly connected to one side of the fixed frame 1. The output end of the pneumatic push rod 19 meshes with the gear disk 7. By setting the pneumatic push rod 19, the end of the pneumatic push rod 19 is inserted into the tooth groove of the gear disk 7, which can provide stable positioning.
[0016] One side of the fixed frame 1 is in contact with a support rod 21, which is fixedly connected to one side of the electric push rod 13. By setting the support rod 21, the stability of the electric push rod 13 during movement can be improved.
[0017] The devices used in this article, such as the electric linear actuator 13, drive motor, and servo motor, are all existing technologies and will not be described in detail here. Working principle: The stator blade blank is placed in the blank limiting groove 9, and then the pressure plate 10 corresponds to the limiting plate 8. The anti-slip rod 18 prevents the stator blade blank from falling off. The electric push rod 13 and the clamping block 15 on one side of the slider 12 contact the stator blade blank or the side of the cut stator blade blank. During the processing, the end of the pneumatic push rod 19 can be used to limit the rotation of the gear disk 7. At this time, the three-dimensional moving mechanism 3 drives the electrode wire on the cutting mechanism 4 to contact the stator blade blank, thereby realizing the cutting. The multi-point contact method can improve the stability of wire cutting. At the same time, the detachable clamping block 15 structure can adapt to the arc surface of the stator blade blank, which can facilitate the replacement of the clamping block 15. The wear of the contact surface of the clamping block 15 can affect the processing accuracy.
[0018] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
[0019] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.
[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A self-adjusting stator blade linear cutting fixture, comprising a fixed frame (1), a support plate (2), a three-dimensional moving mechanism (3) and a cutting mechanism (4), characterized in that, A drive motor is fixedly connected to the bottom of the fixed frame (1), and a rotating rod (5) is fixedly connected to the output end of the drive motor. A cross-shaped limiting strip (6) is fixedly connected to the upper end of the rotating rod (5), and a gear disk (7) is sleeved on the upper end of the cross-shaped limiting strip (6). The upper end of the gear disk (7) contacts a limiting disk (8), and the rotating rod (5) is inserted into the limiting disk (8). A rough blank limiting groove (9) is opened on one side of the limiting disk (8). A pressure plate (10) is threadedly connected to the upper end of the rotating rod (5). Sliding balls (22) are rotatably embedded on all four sides of the bottom end of the pressure plate (10). The bottom side of the sliding balls (22) is in contact with the upper side of the limiting disk (8). The fixed frame (1) is fixedly connected to one side of the fixed frame (1), and the center of the arc rod (11) coincides with the center of the limiting plate (8). A slider (12) is sleeved on the arc rod (11). An electric push rod (13) is fixedly connected to the side of the slider (12) near the limiting plate (8). A triangular block (14) is fixedly connected to the output end of the electric push rod (13). A locking block (15) is in contact with one side of the triangular block (14). A limiting rod (16) is fixedly connected to the side of the locking block (15) near the arc rod (11). A fixing ring (17) is threaded onto the limiting rod (16).
2. An adaptive-adjustment stator vane linear cutting fixture according to claim 1, wherein, Anti-slip rods (18) are fixedly connected to the six mutually spaced sides of the pressure plate (10), and the bottom end of the anti-slip rods (18) contacts the upper end of the limiting plate (8).
3. An adaptive-adjustment stator vane linear cutting fixture as claimed in claim 2, wherein, The bottom end of the limiting plate (8) is fixedly connected to a metal mesh cover (20), and the bottom end of the metal mesh cover (20) is fixedly connected to the fixing frame (1).
4. An adaptive-adjustment stator vane linear cutting fixture as claimed in claim 3, wherein, A pneumatic push rod (19) is fixedly connected to one side of the fixed frame (1), and the output end of the pneumatic push rod (19) meshes with the gear disk (7).
5. An adaptive-adjustment stator vane linear cutting fixture as claimed in claim 4, wherein, The fixed frame (1) has a support rod (21) in contact with one side, and the support rod (21) is fixedly connected to one side of the electric push rod (13).