Ultrasonic detection device for R angle of cap-shaped stringer made of composite material

Abstract

The invention relates to the technical field of nondestructive testing of composite materials, in particular to an ultrasonic testing device for an R angle of a cap-shaped stringer of a composite material. The ultrasonic testing device comprises a mounting frame, a water tank, an X-axis movement mechanism and a Y-axis movement mechanism, the water tank is arranged in the mounting frame and is used for placing a cap-shaped stringer part to be detected so as to carry out scanning detection by a water immersion type ultrasonic reflection method; the X-axis movement mechanism is arranged on the mounting frame; the Y-axis movement mechanism is arranged on the X-axis movement mechanism and can move along the X-axis movement mechanism; the Y-axis movement mechanism comprises a Y-axis guide rail, a Y-axis sliding block and an ultrasonic probe; the Y-axis sliding block is arranged on the Y-axis guide rail in a sliding manner, and the ultrasonic probe is arranged on the Y-axis sliding block; and the Y-axis guide rail comprises a Y-axis horizontal guide rail, a Y-axis R-angle guide rail and a Y-axis inclined guide rail which are smoothly connected in sequence. According to the invention, the accuracy, reliability and detection efficiency of ultrasonic automatic scanning detection can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of nondestructive testing of composite materials, and in particular to an ultrasonic testing device for R angles of hat-shaped long stringers of composite materials. Background Art

[0002] Fiber-reinforced resin-based composite materials have become an indispensable material choice in the aerospace field due to their excellent high specific strength, high specific modulus and outstanding weight reduction effect. In particular, composite hat-shaped long spars have been increasingly widely used in aircraft structures due to their structural advantages, such as excellent rigidity of the wall panel structure, effective reduction of stress concentration and reduction of the weakening of the cross-sectional area of ​​the wall panel by nail holes. This structure not only improves the overall performance of the aircraft, but also significantly reduces the weight, meeting the stringent requirements of the modern aerospace industry for lightweight and high strength. As composite hat-shaped long spars are increasingly widely used in aircraft structures, the internal quality requirements for composite hat-shaped long spars are very high. Among them, the R angle position is the key part of the structural strength, and its internal quality inspection has become a top priority.

[0003] At present, there are two main methods for ultrasonic detection of the R angle position of composite hat-shaped long stringers: the first method is manual detection, which is usually carried out using a water bag or a probe equipped with a delay block matching the R angle. Although this method can achieve the detection purpose to a certain extent, it is inefficient and the coupling effect is not ideal. In addition, due to the limitations of human operation, the risk of missed detection is high, and it is difficult to meet the needs of efficient and accurate detection. The second method is automatic detection, which can be divided into contact ultrasonic automatic reflection method detection and water immersion ultrasonic automatic reflection method detection. Although the contact ultrasonic automatic reflection method detection uses a delay block or water bag consistent with the R angle structure for coupling, due to the poor coupling effect, the defect detection blind area at the R angle is large, and the reliability of the detection result is affected. The water immersion ultrasonic automatic reflection method requires at least a 4-axis scanning mechanism to cooperate, the equipment cost is high, and the operation is complicated, which is not conducive to wide application. Most of the existing ultrasonic detection devices only detect a single structural part, and cannot adapt to the detection needs of different structures at the same time, which limits the improvement of detection efficiency. Summary of the invention

[0004] In order to solve the problems of low efficiency, poor effect and limited detection structure types in the current detection of composite material R angle structures, the present application provides an ultrasonic detection device for composite material hat-shaped long stringer R angle, the ultrasonic detection device comprising a mounting frame, a water tank, an X-axis motion mechanism and a Y-axis motion mechanism;

[0005] The water tank is arranged in the mounting frame and is used to place the hat-shaped long stringer parts to be inspected for water immersion ultrasonic reflection method scanning inspection;

[0006] The X-axis motion mechanism is disposed on the mounting frame; the Y-axis motion mechanism is disposed on the X-axis motion mechanism and can move along the X-axis motion mechanism;

[0007] The Y-axis motion mechanism includes a Y-axis guide rail, a Y-axis slider, and an ultrasonic probe; the Y-axis slider is slidably arranged on the Y-axis guide rail, and the ultrasonic probe is arranged on the Y-axis slider; the Y-axis guide rail includes a Y-axis horizontal guide rail, a Y-axis R-angle guide rail, and a Y-axis inclined guide rail which are smoothly connected in sequence.

[0008] Further, the X-axis motion mechanism includes an X-axis drive unit guide rail, an X-axis driven guide rail, an X-axis drive unit guide rail slider, and an X-axis driven guide rail slider;

[0009] The X-axis driving unit guide rail and the X-axis driven guide rail are respectively arranged on both sides of the mounting frame, the X-axis driving unit guide rail slider is slidably arranged on the X-axis driving unit guide rail, and the X-axis driven guide rail slider is slidably arranged on the X-axis driven guide rail.

[0010] Furthermore, the Y-axis motion mechanism further includes a Y-axis horizontal plate and a Y-axis back plate which are perpendicular to each other;

[0011] The two ends of the Y-axis cross plate are respectively arranged on the X-axis driving unit guide slider and the X-axis driven guide slider, and the Y-axis back plate is connected to the Y-axis cross plate through a Y-axis connecting plate; the Y-axis guide rail is arranged on the Y-axis back plate.

[0012] Furthermore, the X-axis motion mechanism also includes an X-axis drive unit, an X-axis drive gear, and an X-axis rack;

[0013] The X-axis driving unit is arranged on the Y-axis horizontal plate, the X-axis driving gear is arranged on the X-axis driving unit, and the X-axis rack is arranged on the guide rail of the X-axis driving unit; the X-axis driving gear and the X-axis rack cooperate with each other.

[0014] Furthermore, the X-axis driving unit guide rail, the X-axis driven guide rail, and the X-axis rack are parallel to each other.

[0015] Further, the Y-axis slider includes a first Y-axis slider and a second Y-axis slider, and the ultrasonic probe includes a first ultrasonic probe and a second ultrasonic probe;

[0016] The first Y-axis slider is connected to the second Y-axis slider through a Y-axis slider connecting rod, the first ultrasonic probe is arranged on the first Y-axis slider, and the second ultrasonic probe is arranged on the second Y-axis slider.

[0017] Furthermore, a first ball bearing and a second ball bearing are respectively provided at both ends of the Y-axis slider connecting rod;

[0018] The first Y-axis slider is provided with a first central axis, and the first central axis is connected to the first ball bearing; the second Y-axis slider is provided with a second central axis, and the second central axis is connected to the second ball bearing.

[0019] Furthermore, the Y-axis slider further includes a first ultrasonic probe fixing rod and a second ultrasonic probe fixing rod;

[0020] The first Y-axis slider is provided with a first fixing slot, the first ultrasonic probe fixing rod is provided in the first fixing slot, and the first ultrasonic probe is provided on the first ultrasonic probe fixing rod;

[0021] The second Y-axis slider is provided with a second fixed slot, the second ultrasonic probe fixing rod is provided in the second fixed slot, and the second ultrasonic probe is provided on the second ultrasonic probe fixing rod.

[0022] Furthermore, the Y-axis motion mechanism also includes a Y-axis drive unit back plate, a Y-axis drive unit, a Y-axis drive gear, and a Y-axis rack;

[0023] The Y-axis driving unit back plate is arranged on the first Y-axis sliding block, the Y-axis driving unit is arranged on the Y-axis driving unit back plate, and the Y-axis driving gear is connected to the Y-axis driving unit;

[0024] The Y-axis rack is arranged on the Y-axis back plate and is parallel to the Y-axis horizontal guide rail; the Y-axis driving gear cooperates with the Y-axis rack.

[0025] Furthermore, the ultrasonic detection device also includes a first part fixing block and a second part fixing block;

[0026] The first part fixing block and the second part fixing block are arranged in the water tank and are used to fix the two ends of the hat-shaped long stringer part to be inspected.

[0027] The above technical solution of the present application has the following advantages:

[0028] The ultrasonic detection device for the R angle of the hat-shaped long stringer of the composite material provided by the present application realizes the contour scanning trajectory by adopting a two-axis motion mechanism, and can automatically and accurately scan the R angle position of the composite long stringer, thereby reducing the time and manpower required for manual detection, reducing the labor intensity, significantly improving the detection efficiency, effectively eliminating the influence of subjective factors in manual detection, and improving the accuracy and reliability of defect detection. Through the ingenious design of the present application, only a two-axis motion mechanism is required to complete the scanning of the two structures of the R angle and the flat plate, without the need for a complex 4-axis or more axis scanning mechanism, thus reducing the equipment cost, and the detection device has a simple and lightweight structure, and the detection position can be moved according to the detection needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A front schematic diagram of an ultrasonic detection device for R angle of a composite hat-shaped long stringer provided in the present application;

[0031] Figure 2 A schematic diagram of the back side of the ultrasonic detection device for the R angle of the hat-shaped long stringer of the composite material provided in the present application;

[0032] Figure 3 This is a schematic diagram of the Y-axis slider connection structure provided in this application.

[0033] Figure numerals: 1. mounting frame, 2. water tank, 3. X-axis drive unit guide rail, 4. X-axis rack, 5. X-axis drive unit guide rail slider, 6. Y-axis cross plate, 7. X-axis drive unit, 8. Y-axis back plate, 9. Y-axis rack, 10. Y-axis horizontal guide rail, 11. Y-axis drive unit back plate, 12. Y-axis drive unit, 13. first Y-axis slider, 14. first fixed card slot, 15. first ultrasonic probe fixing rod, 16. first ultrasonic probe, 17. Y-axis slider connecting rod, 17A. first ball bearing, 17B. second ball bearing, 17C. first Spindle, 17D. Second center axis, 18. Second Y-axis slider, 19. Second fixed slot, 20. Second ultrasonic probe fixing rod, 21. First ultrasonic probe, 22. First part fixing block, 23. X-axis driven guide rail, 24. Y-axis inclined guide rail, 25. Y-axis R-angle guide rail, 26. X-axis driven guide rail slider, 27. Fixed wheel, 28. Detected hat-shaped long stringer part, 29. Second part fixing block, 30. First Y-axis connecting plate, 31. Second Y-axis connecting plate, 32. Third Y-axis connecting plate, 33. Y-axis driving gear, 34. X-axis driving gear. DETAILED DESCRIPTION

[0034] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0038] Fiber reinforced resin matrix composite materials have been widely used in the field of aerospace. Composite hat-shaped long stringers have the advantages of high specific strength and high specific modulus, good rigidity of wall panel structure, good weight reduction effect, etc., which reduce stress concentration and the weakening of the cross-sectional area of ​​the wall panel by nail holes. They have been more and more widely used in aircraft structures. Therefore, the quality requirements for composite hat-shaped long stringers are very high, and the R angle position is the focus of attention. The commonly used methods at present are: manual detection, using water bags or probes with delay blocks with R angle matching structure for detection. This method has low detection efficiency, poor coupling effect, and easy to miss detection; the second is automatic detection, one is to use contact ultrasonic automatic reflection method detection, the automatic detection device uses a delay block or water bag consistent with the R angle structure for coupling detection, due to the poor coupling effect, the defect detection blind area at the R angle is large, the second is to use water immersion ultrasonic automatic reflection method, this method requires at least 4-axis scanning mechanism for coordinated scanning, and the equipment cost is high. In addition, the existing ultrasonic detection device often detects a single structural part, and cannot detect different structures at the same time, and the detection efficiency is low.

[0039] The purpose of this application is to propose a device for ultrasonic automatic scanning and detection of composite material hat-shaped long girders in mass production, so as to improve the accuracy, reliability and detection efficiency of ultrasonic automatic scanning and detection.

[0040] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0041] An embodiment of the present application provides an ultrasonic detection device for the R angle of a composite hat-shaped long stringer, the ultrasonic detection device comprising a mounting frame, a water tank, an X-axis motion mechanism and a Y-axis motion mechanism; the water tank is arranged in the mounting frame, and is used to place the hat-shaped long stringer parts to be detected for water immersion ultrasonic reflection method scanning detection; the X-axis motion mechanism is arranged on the mounting frame; the Y-axis motion mechanism is arranged on the X-axis motion mechanism and can move along the X-axis motion mechanism; the Y-axis motion mechanism comprises a Y-axis guide rail, a Y-axis slider, and an ultrasonic probe; the Y-axis slider can be slidably arranged on the Y-axis guide rail, and the ultrasonic probe is arranged on the Y-axis slider; the Y-axis guide rail comprises a Y-axis horizontal guide rail, a Y-axis R angle guide rail, and a Y-axis inclined guide rail which are smoothly connected in sequence.

[0042] In some embodiments, the X-axis motion mechanism includes an X-axis drive unit guide rail, an X-axis driven guide rail, an X-axis drive unit guide rail slider, and an X-axis driven guide rail slider; the X-axis drive unit guide rail and the X-axis driven guide rail are respectively arranged on both sides of the mounting frame, the X-axis drive unit guide rail slider is slidably arranged on the X-axis drive unit guide rail, and the X-axis driven guide rail slider is slidably arranged on the X-axis driven guide rail.

[0043] In some embodiments, the Y-axis motion mechanism also includes a Y-axis cross plate and a Y-axis back plate that are perpendicular to each other; the two ends of the Y-axis cross plate are respectively arranged on the X-axis drive unit guide slider and the X-axis driven guide slider, and the Y-axis back plate is connected to the Y-axis cross plate through a Y-axis connecting plate; the Y-axis guide rail is arranged on the Y-axis back plate.

[0044] In some embodiments, the X-axis motion mechanism also includes an X-axis drive unit, an X-axis drive gear, and an X-axis rack; the X-axis drive unit is arranged on the Y-axis horizontal plate, the X-axis drive gear is arranged on the X-axis drive unit, and the X-axis rack is arranged on the guide rail of the X-axis drive unit; the X-axis drive gear and the X-axis rack cooperate with each other.

[0045] In some embodiments, the X-axis driving unit guide rail, the X-axis driven guide rail, and the X-axis rack are parallel to each other.

[0046] In some embodiments, the Y-axis slider includes a first Y-axis slider and a second Y-axis slider, and the ultrasonic probe includes a first ultrasonic probe and a second ultrasonic probe; the first Y-axis slider is connected to the second Y-axis slider through a Y-axis slider connecting rod, the first ultrasonic probe is arranged on the first Y-axis slider, and the second ultrasonic probe is arranged on the second Y-axis slider.

[0047] In some embodiments, a first ball bearing and a second ball bearing are respectively provided at both ends of the Y-axis slider connecting rod; a first center axis is provided on the first Y-axis slider, and the first center axis is connected to the first ball bearing; a second center axis is provided on the second Y-axis slider, and the second center axis is connected to the second ball bearing.

[0048] In some embodiments, the Y-axis slider also includes a first ultrasonic probe fixing rod and a second ultrasonic probe fixing rod; a first fixed slot is provided on the first Y-axis slider, the first ultrasonic probe fixing rod is provided in the first fixed slot, and the first ultrasonic probe is provided on the first ultrasonic probe fixing rod; a second fixed slot is provided on the second Y-axis slider, the second ultrasonic probe fixing rod is provided in the second fixed slot, and the second ultrasonic probe is provided on the second ultrasonic probe fixing rod.

[0049] In some embodiments, the Y-axis motion mechanism also includes a Y-axis drive unit backplate, a Y-axis drive unit, a Y-axis drive gear, and a Y-axis rack; the Y-axis drive unit backplate is disposed on the first Y-axis slider, the Y-axis drive unit is disposed on the Y-axis drive unit backplate, and the Y-axis drive gear is connected to the Y-axis drive unit; the Y-axis rack is disposed on the Y-axis backplate and is parallel to the Y-axis horizontal guide rail; the Y-axis drive gear and the Y-axis rack cooperate with each other.

[0050] In some embodiments, the ultrasonic detection device further includes a first part fixing block and a second part fixing block; the first part fixing block and the second part fixing block are disposed in the water tank and are used to fix both ends of the hat-shaped long stringer part to be detected.

[0051] like Figures 1 to 3 As shown, the ultrasonic detection device provided in the embodiment of the present application includes a mounting frame 1 and a water tank 2, wherein the water tank 2 is placed in the mounting frame 1, a part fixing block is installed in the water tank 2, the hat-shaped long stringer part 28 to be detected is placed on the first part fixing block 22 and the second part fixing block 29, the R angle of the detected part 28 coincides with the R angle of the first part fixing block 22 and the second part fixing block 29, an X-axis drive unit guide rail 3 is installed on the upper edge of one side of the mounting frame 1, an X-axis drive unit guide rail slider 5 is installed on the X-axis drive unit guide rail 3, an X-axis rack 4 is installed on the inner side of the X-axis drive unit guide rail 3, an X-axis driven guide rail 23 is installed on the other side edge of the mounting frame, and an X-axis driven guide rail slider 26 is installed on the X-axis driven guide rail.

[0052] The Y-axis cross plate 6 is placed on the X-axis driving guide slider 5 and the X-axis driven guide slider 26, the X-axis driving unit 7 is installed on the Y-axis cross plate 6, the X-axis driving gear 34 is installed below the X-axis driving unit 7, the X-axis driving gear 34 is mechanically matched with the X-axis rack 4, the Y-axis back plate 8 is fixedly connected to the Y-axis cross plate 6 through the Y-axis connecting plate 30, the Y-axis rack 9 is installed above the Y-axis back plate 8, the Y-axis horizontal guide rail 10 is installed below the Y-axis rack 9, the right end of the Y-axis horizontal guide rail 10 is connected to the Y-axis R angle guide rail 25, and the Y-axis R angle guide rail 25 is connected to the Y-axis inclined guide rail 24 below.

[0053] The Y-axis horizontal guide rail 10 is installed with a first Y-axis slider 13 and a second Y-axis slider 18. A Y-axis drive unit back plate 11 is installed above the first Y-axis slider 13. The Y-axis drive unit 12 is installed on the Y-axis drive unit back plate 11. The Y-axis drive gear 33 is connected to the Y-axis drive unit 12. A first fixed slot 14 is installed on the first Y-axis slider 13. A first ultrasonic probe fixing rod 15 is installed on the first fixed slot 14. A first ultrasonic probe 16 is installed on one end of the first ultrasonic probe fixing rod 15. A second fixed slot 19 is installed on the second Y-axis slider 18. A second ultrasonic probe fixing rod 20 is installed on the second fixed slot 19. A second ultrasonic probe 21 is installed on one end of the second ultrasonic probe fixing rod 20. The first Y-axis slider 13 is connected to the second Y-axis slider 18 through a Y-axis slider connecting rod 17.

[0054] The Y-axis R-angle guide 25 is concentric with the detected R-angle of the part fixing block, the Y-axis horizontal guide 10 is tangent to the Y-axis R-angle guide 25, the Y-axis R-angle guide 25 is tangent to the Y-axis inclined guide 24, and the first part fixing block 22 and the second part fixing block 29 are parallel to the X-axis driven shaft guide 23 in the X-axis direction.

[0055] The height of the Y-axis horizontal guide rail 10 is calculated by the following formula:

[0056] H=Rrh

[0057] Wherein, H is the height of the Y-axis horizontal guide rail 10 from the lower edge of the Y-axis back plate 8, R is the center radius of the Y-axis R angle guide rail 25, r is the center radius of the R angle on the part fixing block, and h is the height from the upper surface of the part fixing block to the lower edge of the Y-axis back plate 8.

[0058] In the above-mentioned R-angle ultrasonic detection device of the composite hat-shaped long stringer, the first ultrasonic probe fixing rod 15 can move up and down in the first fixing slot 14 , and the second ultrasonic probe fixing rod 20 can move up and down in the second fixing slot 19 .

[0059] In the ultrasonic detection device for the R angle of the composite hat-shaped long stringer, ball bearings are installed at both ends of the Y-axis slider connecting rod 17, a first central axis 17C is installed on the right side of the first Y-axis slider 13, and the first central axis 17C is connected to the first ball bearing 17A, and a second central axis 17D is installed on the left side of the second Y-axis slider 18, and the second central axis 17D is connected to the second ball bearing 17B. The length of the Y-axis slider connecting rod 17 is calculated and determined by the following formula:

[0060]

[0061] Wherein, L is the length of the Y-axis slider connecting rod 17, S is the length of the Y-axis horizontal guide rail 10, D is the straight-line distance between the two ends of the Y-axis R angle guide rail 25, and d is the length of the Y-axis slider in the length direction.

[0062] The X-axis driving unit guide rail 3 is parallel to the X-axis driving unit rack 4 and the X-axis driven guide rail 23. The X-axis driving unit 7 drives the Y-axis cross plate 6 to move along the X-axis direction, so that the first ultrasonic probe 16 and the second ultrasonic probe 21 move along the X-axis direction.

[0063] The Y-axis horizontal guide rail 10 is parallel to the Y-axis rack 9, and the Y-axis driving unit 12 drives the first Y-axis slider 13 to move along the Y-axis horizontal guide rail 10 so that the first ultrasonic probe 16 moves along the Y-axis horizontal guide rail 10. The first Y-axis slider 13 drives the second Y-axis slider 18 to move along the Y-axis horizontal guide rail 10 and the Y-axis R-angle guide rail 25 through the Y-axis slider connecting rod 17 so that the second ultrasonic probe 16 moves along the Y-axis horizontal guide rail 10 and the Y-axis R-angle guide rail 25.

[0064] In the angle ultrasonic detection device of the composite material hat-shaped long stringer R in the embodiment of the present application, the R angle of the hat-shaped long stringer part 28 to be detected is detected, the X-axis driving unit 7 drives the Y-axis cross plate 6 to move along the X direction, the second ultrasonic probe 21 scans the R angle of the composite material hat-shaped long stringer part 28 to be detected, the Y-axis driving unit 12 drives the first Y-axis slider 13 to move along the Y direction, and the first Y-axis slider 13 drives the second Y-axis slider 18 to move along the Y-axis R angle slider 25 through the Y-axis slider connecting rod 17 until the R angle of the hat-shaped long stringer part 28 to be detected is completely detected.

[0065] In the ultrasonic detection device for the R angle of the composite hat-shaped long stringer in the embodiment of the present application, composite flat plate parts can be detected, the X-axis driving unit 7 drives the Y-axis cross plate 6 to move along the X direction, the first ultrasonic probe 16 scans the flat plate parts, and the Y-axis driving unit 12 drives the first Y-axis slider 13 to move along the Y direction until all the flat plate parts are inspected.

[0066] In the ultrasonic detection device for R angle of a composite hat-shaped long stringer according to the embodiment of the present application, the X-axis driving unit 7 and the Y-axis driving unit 12 may be structures such as motors or electric cylinders.

[0067] By adjusting the position of the second ultrasonic probe fixing rod 20 in the second fixing slot 19, adjusting the distance between the second ultrasonic probe 21 and the R corner of the composite hat-shaped long stringer part 28 to be inspected, and by adjusting the position of the first ultrasonic probe fixing rod 15 in the first fixing slot 14, adjusting the distance between the first ultrasonic probe 16 and the inspected flat plate part, a series of ultrasonic scanning inspection tests were completed successively. The test results show that the inspected composite hat-shaped long stringer part 28 and the composite flat plate part can be quickly and effectively ultrasonically covered and scanned, achieving a good ultrasonic scanning effect.

[0068] In order to solve the problems of low efficiency, poor effect and limited detection structure types in the current composite material R-angle structure detection, the embodiment of the present application proposes a 2-axis motion mechanism with a guide rail design that matches the shape of the composite material hat-shaped long stringer R-angle structure. The mechanism uses a motor drive system to accurately implement the contour scanning path of the R-angle structure, and then performs water immersion ultrasonic reflection method scanning detection. It can not only perform special R-angle scanning on the R-type structure, but also perform flat-panel scanning on the straight part, thereby realizing the detection capabilities of two different structural forms.

[0069] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application.

[0070] It should be clear that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The present application is not limited to the specific structures described above and shown in the figures. In addition, for the sake of simplicity, detailed descriptions of known methods and technologies are omitted here.

[0071] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An ultrasonic detection device for R angle of a hat-shaped long stringer of a composite material, characterized in that: The ultrasonic detection device includes a mounting frame, a water tank, an X-axis motion mechanism and a Y-axis motion mechanism; The water tank is arranged in the mounting frame and is used to place the hat-shaped long stringer parts to be inspected for water immersion ultrasonic reflection method scanning inspection; The X-axis motion mechanism is disposed on the mounting frame; the Y-axis motion mechanism is disposed on the X-axis motion mechanism and can move along the X-axis motion mechanism; The Y-axis motion mechanism includes a Y-axis guide rail, a Y-axis slider, and an ultrasonic probe; the Y-axis slider is slidably arranged on the Y-axis guide rail, and the ultrasonic probe is arranged on the Y-axis slider; the Y-axis guide rail includes a Y-axis horizontal guide rail, a Y-axis R-angle guide rail, and a Y-axis inclined guide rail which are smoothly connected in sequence.

2. The ultrasonic detection device for R angle of composite hat-shaped long stringer according to claim 1, characterized in that: The X-axis motion mechanism includes an X-axis drive unit guide rail, an X-axis driven guide rail, an X-axis drive unit guide rail slider, and an X-axis driven guide rail slider; The X-axis driving unit guide rail and the X-axis driven guide rail are respectively arranged on both sides of the mounting frame, the X-axis driving unit guide rail slider is slidably arranged on the X-axis driving unit guide rail, and the X-axis driven guide rail slider is slidably arranged on the X-axis driven guide rail.

3. The ultrasonic detection device for R angle of composite hat-shaped long stringer according to claim 2, characterized in that: The Y-axis motion mechanism also includes a Y-axis horizontal plate and a Y-axis back plate which are perpendicular to each other; The two ends of the Y-axis cross plate are respectively arranged on the X-axis driving unit guide slider and the X-axis driven guide slider, and the Y-axis back plate is connected to the Y-axis cross plate through a Y-axis connecting plate; the Y-axis guide rail is arranged on the Y-axis back plate.

4. The ultrasonic detection device for R angle of composite hat-shaped long stringer according to claim 3, characterized in that: The X-axis motion mechanism also includes an X-axis drive unit, an X-axis drive gear, and an X-axis rack; The X-axis driving unit is arranged on the Y-axis horizontal plate, the X-axis driving gear is arranged on the X-axis driving unit, and the X-axis rack is arranged on the guide rail of the X-axis driving unit; the X-axis driving gear and the X-axis rack cooperate with each other.

5. The ultrasonic detection device for R angle of composite hat-shaped long stringer according to claim 4, characterized in that: The X-axis driving unit guide rail, the X-axis driven guide rail, and the X-axis rack are parallel to each other.

6. The ultrasonic detection device for R angle of composite hat-shaped long stringer according to claim 5, characterized in that: The Y-axis slider includes a first Y-axis slider and a second Y-axis slider, and the ultrasonic probe includes a first ultrasonic probe and a second ultrasonic probe; The first Y-axis slider is connected to the second Y-axis slider through a Y-axis slider connecting rod, the first ultrasonic probe is arranged on the first Y-axis slider, and the second ultrasonic probe is arranged on the second Y-axis slider.

7. The ultrasonic detection device for R angle of composite hat-shaped long stringer according to claim 6, characterized in that: The two ends of the Y-axis slider connecting rod are respectively provided with a first ball bearing and a second ball bearing; The first Y-axis slider is provided with a first central axis, and the first central axis is connected to the first ball bearing; the second Y-axis slider is provided with a second central axis, and the second central axis is connected to the second ball bearing.

8. The ultrasonic detection device for R angle of composite hat-shaped long stringer according to claim 7, characterized in that: The Y-axis slider also includes a first ultrasonic probe fixing rod and a second ultrasonic probe fixing rod; The first Y-axis slider is provided with a first fixing slot, the first ultrasonic probe fixing rod is provided in the first fixing slot, and the first ultrasonic probe is provided on the first ultrasonic probe fixing rod; The second Y-axis slider is provided with a second fixed slot, the second ultrasonic probe fixing rod is provided in the second fixed slot, and the second ultrasonic probe is provided on the second ultrasonic probe fixing rod.

9. The ultrasonic detection device for R angle of composite hat-shaped long stringer according to claim 8, characterized in that: The Y-axis motion mechanism also includes a Y-axis drive unit back plate, a Y-axis drive unit, a Y-axis drive gear, and a Y-axis rack; The Y-axis driving unit back plate is arranged on the first Y-axis sliding block, the Y-axis driving unit is arranged on the Y-axis driving unit back plate, and the Y-axis driving gear is connected to the Y-axis driving unit; The Y-axis rack is arranged on the Y-axis back plate and is parallel to the Y-axis horizontal guide rail; the Y-axis driving gear cooperates with the Y-axis rack.

10. The ultrasonic detection device for R angle of a composite hat-shaped long stringer according to claim 9, characterized in that: The ultrasonic detection device also includes a first part fixing block and a second part fixing block; The first part fixing block and the second part fixing block are arranged in the water tank and are used to fix the two ends of the hat-shaped long stringer part to be inspected.

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