Special clamping tool for ultrasonic test blade
By designing a special clamping fixture for ultrasonic testing, the problem of unstable clamping of fan blades was solved, achieving stable clamping and efficient testing, avoiding equipment damage, and improving testing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-03-24
AI Technical Summary
Existing clamping fixtures cannot stably clamp fan blades with varying curvature and thickness, resulting in unstable clamping during ultrasonic testing, affecting testing results and potentially damaging the equipment.
A special clamping fixture for ultrasonic testing was designed, including a connecting plate, a support plate and a blade clamping platform. It uses multiple blade positioning blocks and thrust pads in combination, and the clamp lock is rotatably set. The blades are protected by protective pads to ensure stable clamping and avoid equipment collision.
This method achieves stable clamping of the fan blades, improves the reliability and scanning stability of ultrasonic testing, avoids collision damage between the equipment and the blades, and improves testing efficiency.
Smart Images
Figure CN224035335U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of ultrasonic detection, in particular to the field of clamping device. BACKGROUND
[0002] The fan blade ultrasonic detection mainly adopts the water immersion ultrasonic C scanning method to implement detection in the trial production and test decomposition process. During the ultrasonic detection operation of the fan blade, the blade needs to be clamped in the tooling, and then the ultrasonic automatic scanning of the blade is implemented by controlling the mechanical system of the water immersion ultrasonic C scanning equipment. The clamping tooling currently used has a simple structure and is mainly used for clamping regular parts such as flat plates, and cannot realize stable clamping of fan blades with variable curvature and variable thickness. SUMMARY
[0003] An object of the utility model is to provide a clamping tooling special for ultrasonic testing, which can realize stable clamping of fan blades.
[0004] To realize the above-mentioned purpose, the clamping tooling special for ultrasonic testing blades includes a connecting plate, a support plate and a blade clamping table. The connecting plate is used for connecting with the ultrasonic scanning equipment. The support plate is arranged on the connecting plate. The blade clamping table is located on the support plate and includes a plurality of blade positioning blocks and a thrust pad. The plurality of blade positioning blocks are used for collectively positioning the blade. The thrust pad is arranged on the bottom plate of the blade clamping table in an up-down telescopic manner and is used for abutting against the bottom of the blade.
[0005] In one or more embodiments, the end of the blade clamping table is also provided with a pair of clamp locks which are rotatably arranged on the blade clamping table to limit the end of the blade.
[0006] In one or more embodiments, the rotation shaft of the clamp lock is located on the plane of the blade clamping table and is perpendicular to the blade height direction of the blade.
[0007] In one or more embodiments, the clamp lock is rotatably connected with the blade clamping table through a hinge structure.
[0008] In one or more embodiments, the blade positioning block includes a blade top stopper and a blade bottom stopper.
[0009] In one or more embodiments, the blade top stopper and the blade bottom stopper are arranged on the clamp lock.
[0010] In one or more embodiments, the blade positioning block includes a side stopper located on the back side and / or the basin side of the blade.
[0011] In one or more embodiments, the surface of the blade positioning block is provided with a protective pad.
[0012] In one or more embodiments, the vane clamping table further comprises a threaded part threadedly connected with the bottom plate of the vane clamping table, and the thrust pad is arranged at an end of the threaded part.
[0013] In one or more embodiments, a protective pad is arranged on the bottom plate of the vane clamping table.
[0014] The special clamping tool for ultrasonic testing separates the vane clamping table from the ultrasonic scanning equipment by a connecting plate and a supporting plate, avoids collision between the scanning mechanical system and the clamping device and the fan blade, and facilitates automatic scanning of the scanning mechanical system. BRIEF DESCRIPTION OF DRAWINGS
[0015] The above and other features, properties, and advantages of the present application will become more apparent through the following description with reference to the accompanying drawings and embodiments.
[0016] Figure 1 is a schematic view of a fan blade;
[0017] Figure 2 is a schematic view of a special clamping tool for ultrasonic testing;
[0018] Figure 3 is a structural top view of a connecting plate and a vane clamping table;
[0019] Figure 4 is a schematic view of a connecting structure of a connecting plate, a supporting plate, and a bottom plate of a vane clamping table;
[0020] Figure 5 is a schematic view of a connecting structure of a clamp lock and a hinge block;
[0021] Figure 6 is a schematic view of a connecting structure of a vane stop block, a clamp lock, a hinge block, and a bottom plate of a vane clamping table. DETAILED DESCRIPTION
[0022] The present application will be further described below in conjunction with specific embodiments and drawings, and more details are set forth in the following description to facilitate a full understanding of the present application, but the present application can obviously be implemented in many other ways different from the description, and those skilled in the art can make similar generalizations and deductions according to actual application conditions without departing from the connotation of the present application, and therefore the protection scope of the present application should not be limited by the content of the specific embodiments.
[0023] It should be noted that these and other subsequent drawings are only as an example, which is not drawn in accordance with the condition of the same scale, and should not be taken as the actual required protection scope of the utility model constitutes a limit.
[0024] Fan blade is one of the important parts of the turbine fan engine structure, and the quality of the parts is directly related to the performance of the aero-engine and the flight safety of the aircraft. With the continuous progress of science and technology in the field of aviation in recent years, the bypass ratio, thrust-to-weight ratio and expected service life of the aero-engine continue to improve, and the blade structure is more complex. The latest engine fan blade is mainly made of composite materials, mainly using layering or weaving process to form, and in order to improve the ability of the blade to resist bird impact, the leading edge of the blade is wrapped with a titanium alloy edge from top to bottom; at the same time, considering the factors such as aerodynamics and structural strength, the leading edge of the wide-chord fan blade is designed in the form of forward or backward sweep, so that the fan blade structure has the characteristics of variable curvature and variable thickness, as shown in Figure 1 These materials, forming processes and structural characteristics make it easy for fan blades to have defects such as delamination, porosity, debonding and cracking during trial production and testing, so it is necessary to use ultrasonic testing method to detect whether such defects exist inside the fan blade.
[0025] In the prior art, fan blade ultrasonic testing mainly uses water immersion ultrasonic C-scan method to implement detection during trial production and testing decomposition. The clamping tool used at present has a simple structure and is mainly used for clamping regular parts such as flat plates, mainly composed of a flat plate support frame and a clamping screw rod, and cannot realize stable clamping of fan blades with variable curvature and variable thickness structure, resulting in the inability to realize effective ultrasonic scanning; at the same time, because the mechanical system of the water immersion ultrasonic C-scan equipment needs to track the profile of the fan blade during ultrasonic automatic scanning, unlike the straight-line scanning method for regular flat plate parts, the clamping method of the support frame and screw rod of the existing clamping tool is easy to collide with the mechanical system, resulting in damage to the parts or equipment.
[0026] Based on this, the present disclosure proposes a special clamping tool for ultrasonic testing, which realizes stable clamping of fan blades and other complex structural components, and does not affect the mechanical profiling tracking of the equipment during water immersion ultrasonic C-scan detection, ensuring the convenient and efficient implementation of ultrasonic detection.
[0027] Figures 2 to 6 a schematic view of the special clamping tool for ultrasonic testing, Figure 2 is a side oblique view of the special clamping tool for ultrasonic testing of the blade, Figure 3 is a top view of the special clamping tool for ultrasonic testing of the blade, Figure 4 is Figure 3 a sectional view in A-A direction of Figure 5 is Figure 3 a sectional view in B-B direction of Figure 6 isFigure 3 Cross-sectional view in the C-C direction.
[0028] The special clamping tool for ultrasonic testing of the blade includes a connecting plate 1, a support plate 2, and a blade clamping table 3. One end of the connecting plate 1 is connected to the support frame of the ultrasonic scanning equipment such as the water-immersed ultrasonic C-scan equipment through the bolt hole 21 by means of a bolt, and the other end of the connecting plate 1 is connected to the support plate 2 by means of a first inner hexagonal cylindrical screw 23.
[0029] The support plate 2 is connected to the bottom plate 4 of the blade clamping table 3 by means of a positioning pin 8 and is fixed by means of a first fastening screw 22. The bottom protection pad 5 is installed on the bottom plate 4 of the blade clamping table 3 by means of a countersunk screw 7 and serves to protect the tenon of the fan blade, so as to avoid damage to the fan blade during clamping. Figure 3 and Figure 4 The support plate 2 keeps the blade clamping table 3 at a certain distance from the support frame of the water-immersed ultrasonic C-scan equipment, so as to avoid collision between the mechanical system of the water-immersed ultrasonic C-scan equipment and the clamping device and the fan blade and facilitate automatic scanning and profile tracking of the multi-curved surface by the mechanical system of the water-immersed ultrasonic C-scan equipment.
[0030] The end of the blade clamping table is also provided with a pair of clamp locks 19 which are rotatably arranged on the blade clamping table 3 to limit the end of the blade, as shown in Figure 3 The rotation shaft of the clamp lock is located in the plane of the blade clamping table 3 and is perpendicular to the blade height direction of the blade, and cooperates with the blade positioning block, so as to fix the fan blade on the blade clamping table.
[0031] Specifically, the clamp lock 19 is rotatably connected to the blade clamping table 3 by means of a hinge structure, as shown in Figure 5 The hinge structure includes a hinge 25 and a hinge block 24, the hinge 25 is sleeved on the hinge block 24, is fixed by means of a second fastening screw 26, and is connected to the clamp lock 19. The movable bolt 20 is inserted into the hinge block 24 and can be inserted into the hinge block 24. When the movable bolt 20 is pulled, the clamp lock 19 can be rotated around the hinge 25 to a position perpendicular to the blade clamping table bottom plate 4. When the clamp lock 19 is rotated to a position in the same plane as the blade clamping table bottom plate 4, the movable bolt 20 is automatically inserted back into the hinge block 24, thereby locking the clamp lock 19, and thereby clamping the fan blade on the blade clamping table.
[0032] The blade positioning block includes a blade top stop block and a blade bottom stop block, and also includes a side stop block located on the back side and / or the basin side of the blade, so as to fix the position of the tenon of the fan blade inserted into the blade clamping table, thereby ensuring the positioning of the fan blade defined by the mechanical system of the water-immersed ultrasonic C-scan equipment. At the same time, protective pads are designed on the blade clamping table bottom plate, the blade top, the bottom, and the side stop block, which serve to protect the tenon of the fan blade and avoid damage to the fan blade during clamping.
[0033] As shown in Figure 3 and Figure 6 The blade top block 15 and the blade top side block 16 are installed on the clamp lock 19 by the second hexagonal cylinder screw 11. The blade top side protection pad 17 and the blade top protection pad 18 are installed on the blade top block 15 and the blade top side block 16 by the third hexagonal cylinder screw 31, which plays a role in protecting the fan blade tenon to avoid damage to the fan blade during clamping. Figure 6 As shown in
[0034] Further, the blade bottom block 9 and the blade bottom side block 10 are installed at the bottom end of the blade clamping table bottom plate 4 by the second hexagonal cylinder screw 11. The blade bottom side protection pad 12 and the blade bottom protection pad 13 are installed on the blade bottom block 9 and the blade bottom side block 10 by the third hexagonal cylinder screw 31, which plays a role in protecting the fan blade tenon to avoid damage to the fan blade during clamping. The clamping block 32 is connected to the blade clamping table bottom plate 4 by the fourth hexagonal cylinder screw 30, and the flat head screw 29 is installed on the clamping block 32. The thrust pad 14 is installed on the flat head screw 29, and rotating the flat head screw 29 can make the thrust pad 14 move up and down in the blade clamping table bottom plate 4. When the fan blade tenon is inserted between the blocks, adjust the flat head screws at both ends of the blade clamping table to make the thrust pad push the fan blade tenon to contact with the blocks, realize clamping of the fan blade tenon, and thus realize stable clamping of the fan blade.
[0035] Due to the structural characteristics of variable curvature and variable thickness of the fan blade, clamping the blade body will affect the water immersion ultrasonic C-scan mechanical scanning, so the fan blade tenon part needs to be clamped. Through the above-mentioned blade clamping table, the fan blade tenon is inserted into the position between the blade top block, the bottom block, and the side block along the blade clamping table bottom plate, so as to realize stable clamping of the fan blade in a vertical state, which is convenient for automatic scanning implementation of water immersion ultrasonic C-scan detection.
[0036] The above-mentioned ultrasonic test blade special clamping tool can effectively solve the problem of ultrasonic detection of the fan blade of the aero-engine, realize stable clamping of the fan blade and effective connection with the ultrasonic water immersion C-scan equipment, and thus improve the reliability of the detection result, the stability and convenience of the scanning, and the detection efficiency.
[0037] Also, certain terminology has been used in the description for the purpose of reference only. As one skilled in the art will appreciate, the terms "one embodiment," "an embodiment,” "some embodiments,” and "one alternative” are not intended to refer to the same embodiments or to a single alterative unless explicitly so identified. Rather, the terms are used solely to distinguish different embodiments. Moreover, the use of the terms first, second, etc., merely designate the different steps in the methods for purposes of clarity and are not intended to be limiting.
[0038] The utility model discloses although the above-mentioned preferable embodiment is disclosed, but it is not used to limit the utility model, and any person skilled in the art can make possible change and modification without departing from the spirit and scope of the utility model. Therefore, all the modifications, equivalent changes and modifications of the above embodiment according to the technical essence of the utility model, all fall into the protection scope defined in the utility model claim.
Claims
1. A special clamping fixture for ultrasonic testing blades, characterized in that, include: A connecting plate for connecting to ultrasound scanning equipment; A support plate is disposed on the connecting plate; as well as The blade clamping platform, located on the support plate, includes multiple blade positioning blocks and thrust pads. The multiple blade positioning blocks are used to jointly position the blade, and the thrust pads are vertically extendable and extendable on the bottom plate of the blade clamping platform to abut against the bottom of the blade.
2. The special clamping fixture for ultrasonic testing blades as described in claim 1, characterized in that, The blade clamping platform is also provided with a pair of clamp locks at its end, which are rotatably mounted on the blade clamping platform to limit the blade end.
3. The special clamping fixture for ultrasonic testing blades as described in claim 2, characterized in that, The pivot of the clamp lock is located on the plane of the blade clamping table and is perpendicular to the blade height direction.
4. The special clamping fixture for ultrasonic testing blades as described in claim 2, characterized in that, The clamp lock is rotatably connected to the blade clamping table via a hinge structure.
5. The special clamping fixture for ultrasonic testing blades as described in claim 2, characterized in that, The blade positioning block includes a blade top stop block and a blade bottom stop block.
6. The special clamping fixture for ultrasonic testing blades as described in claim 5, characterized in that, The blade top stop and the blade bottom stop are mounted on the clamp lock.
7. The special clamping fixture for ultrasonic testing blades as described in claim 1, characterized in that, The blade positioning block includes a side stop located on the back side and / or the leaf base side of the blade.
8. The special clamping fixture for ultrasonic testing blades as described in claim 1, characterized in that, The surface of the blade positioning block is provided with a protective pad.
9. The special clamping fixture for ultrasonic testing blades as described in claim 1, characterized in that, The blade clamping platform also includes a threaded component that is threadedly connected to the base plate of the blade clamping platform, and the thrust pad is disposed at the end of the threaded component.
10. The special clamping fixture for ultrasonic testing blades as described in claim 1, characterized in that, The base plate of the blade clamping platform is equipped with a protective pad.