Titanium alloy structural member appearance defect detection equipment

Abstract

The invention provides titanium alloy structural member appearance defect detection equipment, and particularly relates to the technical field of titanium alloy detection.The titanium alloy structural member appearance defect detection equipment comprises a main cabinet, a working table is arranged at the top of the main cabinet, two sets of concave vertical frames are fixedly installed on the two sides of the table top of the working table, and a Y-direction moving structure is jointly installed on the two sets of concave vertical frames; a loading detection table is assembled on the second X-direction moving structure; according to the titanium alloy structural part surface defect detection equipment, the spraying position is adjusted through double micro telescopic rods and a position sensor, a fan-shaped nozzle enables a coupling agent to form a relatively uniform coupling layer, the coupling agent does not need to be manually coated, an independent spraying station is omitted, the spraying efficiency is improved, the labor intensity of workers is reduced, and the labor intensity of the workers is reduced. The detection process is shortened, especially during batch detection, the procedure connection time is greatly shortened, the detection efficiency is improved, meanwhile, the elastic corrugated sleeve can be compressed and sealed, the stability of the negative pressure environment is ensured, interference of air to ultrasonic signals is reduced, and the accuracy of the detection result is improved.

Description

TECHNICAL FIELD

[0001] The application provides a titanium alloy structural member outer surface defect detection equipment, and particularly relates to the titanium alloy detection technical field. BACKGROUND

[0002] Titanium alloy material is a kind of metal material in the field of new materials, which has excellent metal properties and is widely used in the fields of aviation and automobile. The defects on the surface of titanium alloy structural members directly affect the performance of the final product. The current detection methods include visual detection and ultrasonic detection.

[0003] However, in the process of detecting the outer surface defects of the titanium alloy structural member, the ultrasonic detection method needs to rely on a coupling agent to realize the transmission of sound waves, such as the titanium alloy bar detection equipment of CN120177623B. However, there are significant defects. On the one hand, the ultrasonic detection area lacks a sealing function, and external air is easy to invade from the edge of the contact surface between the coupling agent and the workpiece, forming an air gap, causing the ultrasonic signal to attenuate, and further inducing the defect misjudgment or omission phenomenon. On the other hand, the coupling agent coating operation generally relies on manual intervention, resulting in low coating efficiency and difficulty in ensuring uniformity, which easily causes the coupling agent to flow or the coverage area to shift. At the same time, the coating process and the ultrasonic probe detection action are completely separated, and additional connection steps need to be arranged, causing a long detection process and complex operation. SUMMARY

[0004] The purpose of the present application is to provide a titanium alloy structural member outer surface defect detection equipment, which has the advantages of improving detection efficiency, ensuring uniformity of coupling agent coating, simplifying operation process, reducing air gap interference, improving detection precision, and being suitable for titanium alloy planar structural members.

[0005] The application provides a titanium alloy structural member outer surface defect detection equipment, and the technical scheme is as follows: A titanium alloy structural member outer surface defect detection equipment, comprising a main cabinet, a workbench is arranged on the top of the main cabinet, two groups of concave stands are fixedly installed on both sides of the workbench table top, a Y-direction moving structure is commonly installed on the two groups of concave stands, a horizontal rack is assembled on the Y-direction moving structure, a first X-direction moving structure is assembled on the horizontal rack, a concave loading plate is assembled on the first X-direction moving structure, a second X-direction moving structure is fixedly installed on the workbench of the main cabinet, and a loading detection table is assembled on the second X-direction moving structure; the equipment further comprises a composite detection mechanism, and the composite detection mechanism is arranged on the concave loading plate. The composite detection mechanism comprises a detection assembly, a matching assembly and a pre-coating assembly. The detection assembly comprises a Z-direction telescopic cylinder, a loading seat and an ultrasonic probe, the Z-direction telescopic cylinder is fixedly installed on the concave loading plate, the piston rod end of the Z-direction telescopic cylinder is fixedly installed with the loading seat, and the ultrasonic probe is installed on the loading seat. The matching assembly is arranged outside the ultrasonic probe; The matching assembly comprises a barrel seal and an annular pipe, the top of the barrel seal is detachably connected with the loading seat, the annular pipe is fixedly connected with the barrel seal, and the annular pipe is communicated with an external air source through an external pipe head; The pre-coating assembly is fixedly installed at the bottom of the loading seat, and is used for spraying the coupling agent to the to-be-measured part of the titanium alloy structural member on the loading detection table.

[0006] Further, in the application, the annular pipe is provided with a plurality of built-in pipe heads, the built-in pipe heads are located inside the barrel seal and are annularly distributed, and the ends of the built-in pipe heads are open towards the top region of the barrel seal.

[0007] Further, in the application, the barrel seal comprises a sealing sleeve, an elastic corrugated sleeve and a convex ring, the sealing sleeve is detachably connected with the loading seat, the top of the sealing sleeve is embedded with an annular sealing ring, and the annular sealing ring is matched with an annular embedding groove at the bottom of the loading seat. The elastic corrugated sleeve is fixedly connected with the bottom of the sealing sleeve, and the convex ring is fixedly connected with the bottom of the elastic corrugated sleeve.

[0008] Further, in the application, the bottom of the convex ring is provided with a magnetic ring, the end face of the magnetic ring is flush with the end face of the convex ring, and the magnetic ring is used for improving the close-fitting degree of the convex ring and the surface of the titanium alloy structural member.

[0009] Further, in the application, the pre-coating assembly comprises an L-shaped hanging plate, a first micro telescopic rod, a clamping seat, a second micro telescopic rod and a spraying pipe, the L-shaped hanging plate is fixedly connected with the bottom of the loading seat, the first micro telescopic rod is fixedly installed on the L-shaped hanging plate, the clamping seat is fixedly installed at the end of the telescopic shaft of the first micro telescopic rod, the second micro telescopic rod is fixedly installed on the clamping seat, and the end of the telescopic shaft of the second micro telescopic rod is fixedly connected with the spraying pipe. The bottom of the spraying pipe is communicated with a plurality of spraying nozzles, the distribution range of the plurality of spraying nozzles covers the detection end region of the ultrasonic probe, and the top of the spraying pipe is communicated with an external coupling agent injection system through an external pipe.

[0010] Further, in the application, position sensors are respectively installed on the first micro telescopic rod and the second micro telescopic rod, and the position sensors are used for detecting the vertical distance and the horizontal distance between the spraying nozzles and the to-be-measured surface of the titanium alloy structural member.

[0011] Further, in the application, a gas pressure sensor is embedded in the inner wall of the sealing sleeve, the gas pressure sensor is electrically connected with a controller of an external air source, and is used for feeding back the gas pressure value in the barrel seal.

[0012] Further, in the application, after the bottom of the cylindrical seal is attached to the to-be-detected part of the titanium alloy structure, the external air source extracts the air inside the cylindrical seal through the annular pipe.

[0013] Further, in the application, the spraying work of the pre-coating assembly is prior to the detection action of the detection assembly, and after the spraying is completed, the pre-coating assembly is retracted and reset, and the retracted pre-coating assembly is located in the side area of the ultrasonic probe, and the detection assembly drives the ultrasonic probe to continue to move downward.

[0014] Further, in the application, after the air inside the cylindrical seal is extracted, the Z-direction telescopic air cylinder drives the ultrasonic probe to continue to move downward, and the elastic corrugated sleeve is compressed until the detection end of the ultrasonic probe contacts the couplant and the to-be-detected part of the titanium alloy structure.

[0015] In summary, compared with the prior art, the above technical solutions provided by the application have at least one of the following beneficial effects: The titanium alloy structure external defect detection equipment adjusts the spraying position through the double micro telescopic rods and the position sensor, and the fan-shaped nozzle forms a relatively uniform coupling layer of the couplant, without manual coating of the couplant, so that a separate spraying station is saved, the detection process is shortened, especially when batch detection is performed, the process connection time is greatly reduced, and the detection efficiency is improved; At the same time, the annular pipe in the matching assembly and the built-in pipe head distributed in a ring shape and arranged with an upward opening can be used to simultaneously extract air to avoid air residue and prevent the couplant from being blocked; the magnetic ring assists the convex ring to attach to the workpiece, thereby making up for slight uneven gaps; and the elastic corrugated sleeve can be compressed and sealed, thereby ensuring the stability of the negative pressure environment, reducing the interference of air on the ultrasonic signal, and improving the accuracy of the detection result; The concave stand provides stable support for the Y-direction moving structure, and in combination with the first and second X-direction moving structures, the relative position of the detection mechanism and the workpiece can be adjusted from multiple directions, without manual carrying of the workpiece, thereby reducing the labor intensity of the operator and reducing the error caused by manual adjustment, laying a foundation for subsequent accurate detection; In addition, the Z-direction telescopic air cylinder moves downward at a low speed to protect the ultrasonic probe, the air pressure sensor is linked to the vacuum pump to prevent damage to the components caused by excessive air extraction, and the modules of the entire equipment are coordinated to realize automation from positioning to detection, thereby prolonging the service life of the components and ensuring the reliability of each detection, and meeting the high-precision detection requirements of titanium alloy parts. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front perspective view of the application; Figure 2 is a partial perspective view of related components at the concave carrier plate in the application; Figure 3 is a partial perspective view of related components at the loading seat in the application; Figure 4 Figure 3 is a partial perspective view of the relevant components in the separation state of the cylindrical seal and the loading seat in the present application; Figure 5 Figure 4 is a partial perspective view of the relevant components at the annular tube and the cylindrical seal in the present application; Figure 6 Figure 5 is a partial top view of the relevant components at the built-in tube head in the present application; Figure 7 Figure 6 is a partial exploded perspective view of the relevant components at the matching assembly in the present application; Figure 8 Figure 7 is a partial bottom perspective view of the relevant components at the magnetic ring and the convex ring in the present application; Figure 9 Figure 8 is a partial perspective view of the relevant components at the pre-coating assembly in the present application; Figure 10 Figure 9 is a partial bottom perspective view of the relevant components at the pre-coating assembly in the present application.

[0017] The reference numbers in the figures respectively represent: 1, main cabinet; 11, concave stand; 12, horizontal stand; 13, first X-direction moving structure; 131, concave loading plate; 14, Y-direction moving structure; 15, second X-direction moving structure; 151, loading detection table; 2, composite detection mechanism; Detection assembly: 21, Z-direction telescopic cylinder; 22, loading seat; 23, ultrasonic probe; Matching assembly: 24, cylindrical seal; 241, sealing sleeve; 242, annular sealing ring; 243, elastic corrugated sleeve; 244, convex ring; 245, magnetic ring; 25, annular tube; 251, external tube head; 252, built-in tube head; 3, pre-coating assembly; 31, L-shaped hanging plate; 32, first micro telescopic rod; 33, clamping seat; 34, second micro telescopic rod; 35, spraying tube; 351, spraying nozzle; 36, external tube. DETAILED DESCRIPTION

[0018] The present application will be further described below in combination with examples.

[0019] As the first embodiment of the present application: Reference is made to the accompanying drawings Figures 1 to 8As shown, a titanium alloy structural member external defect detection device, including main cabinet 1, the top of main cabinet 1 is provided with a workbench, two groups of concave stands 11 are fixedly installed on both sides of the workbench top, a Y-direction moving structure 14 is jointly installed on the two groups of concave stands 11, a horizontal rack 12 is assembled on the Y-direction moving structure 14, a first X-direction moving structure 13 is assembled on the horizontal rack 12, a concave loading plate 131 is assembled on the first X-direction moving structure 13, a second X-direction moving structure 15 is also fixedly installed on the workbench of the top of main cabinet 1, and a loading detection table 151 is assembled on the second X-direction moving structure 15, and the device further comprises a composite detection mechanism 2, which is arranged on the concave loading plate 131; The composite detection mechanism 2 comprises a detection assembly and a matching assembly; wherein the detection assembly comprises a Z-direction telescopic air cylinder 21, a loading seat 22 and an ultrasonic probe 23, the Z-direction telescopic air cylinder 21 is fixedly installed on the concave loading plate 131, the piston rod end of the Z-direction telescopic air cylinder 21 is fixedly installed with the loading seat 22, and the loading seat 22 is installed with the ultrasonic probe 23; The matching assembly is sleeved outside the ultrasonic probe 23; The matching assembly comprises a cylindrical seal 24 and an annular pipe 25, the top of the cylindrical seal 24 is detachably connected with the loading seat 22, the annular pipe 25 is fixedly communicated on the cylindrical seal 24, and the annular pipe 25 is communicated with an external air source through an external pipe head 251.

[0020] As a specific implementation, a plurality of built-in pipe heads 252 are arranged on the annular pipe 25, the built-in pipe heads 252 are located inside the cylindrical seal 24 and are annularly distributed, and the ends of the built-in pipe heads 252 are open towards the top region of the cylindrical seal 24; this can avoid the coupling agent being sucked into the pipe head during air extraction, and the annular distribution can simultaneously extract air from multiple directions to prevent local air residues from affecting the sealing effect.

[0021] As a specific implementation, the cylindrical seal 24 comprises a sealing sleeve 241, an elastic corrugated sleeve 243 and a convex ring 244, the sealing sleeve 241 is detachably connected with the loading seat 22, the top of the sealing sleeve 241 is embedded with an annular sealing ring 242, and the annular sealing ring 242 is matched with an annular embedding groove at the bottom of the loading seat 22; the annular sealing ring 242 is made of butyronitrile rubber material, which is resistant to oil and aging, and has good elasticity, so as to effectively fill the gap between the sealing sleeve 241 and the loading seat 22 and block the external air from entering.

[0022] The elastic corrugated sleeve 243 is fixedly connected with the bottom of the sealing sleeve 241, and the convex ring 244 is fixedly connected with the bottom of the elastic corrugated sleeve 243.

[0023] As a specific implementation, a magnetic ring 245 is provided at the bottom of the convex ring 244. The end face of the magnetic ring 245 is flush with the end face of the convex ring 244 to improve the tightness of the fit between the convex ring 244 and the surface of the titanium alloy structural component. The magnetic ring 245 is made of neodymium iron boron permanent magnet material and is bonded and fixed to the convex ring 244 with strong adhesive. Although titanium alloy is a paramagnetic material with weak magnetic attraction, it is sufficient to help the convex ring 244 fit the surface of the workpiece. Especially for the case of slight unevenness of the workpiece surface, the gap can be compensated by magnetic force.

[0024] As a specific implementation, a pressure sensor is embedded in the inner wall of the sealing sleeve 241. The pressure sensor is electrically connected to the controller of the external air source and is used to provide feedback on the air pressure value inside the cylindrical seal 24. The detection end of the pressure sensor faces the inside of the cylindrical seal 24. The sensor and the sealing sleeve 241 are sealed with sealant to prevent air leakage from affecting the detection accuracy. When the sensor detects that the internal air pressure reaches the preset negative pressure threshold, it sends a signal to the controller. The controller then controls the external air source to stop pumping air to avoid excessive pumping that could damage the elastic corrugated sleeve 243 due to excessive negative pressure.

[0025] In a specific implementation, after the bottom of the cylindrical seal 24 is attached to the part to be tested of the titanium alloy structure, an external air source draws air from inside the cylindrical seal 24 through the annular pipe 25. The external air source is preferably a vacuum pump. During the evacuation process, the controller will receive feedback signals from the air pressure sensor in real time. If the air pressure drops too slowly, it is determined that there may be a problem with the seal, and the equipment alarm will be triggered to remind the operator to check the fit of the cylindrical seal 24.

[0026] In a specific implementation, after the air inside the cylindrical seal 24 is completely evacuated, the Z-axis telescopic cylinder 21 drives the ultrasonic probe 23 to continue moving downwards, compressing the elastic corrugated sleeve 243 until the detection end of the ultrasonic probe 23 contacts the coupling agent and the part to be tested on the titanium alloy structural component. The downward movement speed of the Z-axis telescopic cylinder 21 is adjusted by the flow valve. At this time, the speed is adjusted to a low speed to avoid the probe from contacting the workpiece too quickly and causing damage. At the same time, the compression of the elastic corrugated sleeve 243 can be controlled by the cylinder's stroke sensor to ensure that the probe just contacts the coupling agent without pressing on the workpiece surface.

[0027] As a second embodiment of this application: Reference Appendix Figure 1 , Figures 8 to 10 As shown, the above-mentioned titanium alloy structural component surface defect detection equipment also includes a pre-coating component 3, which is fixedly installed at the bottom of the loading seat 22 and is used to spray coupling agent onto the titanium alloy structural component to be tested on the loading test table 151.

[0028] The pre-coating assembly 3 includes an L-shaped hanging plate 31, a first micro telescopic rod 32, a clamping seat 33, a second micro telescopic rod 34, and a spray pipe 35. The L-shaped hanging plate 31 is fixedly connected to the bottom of the loading seat 22. The first micro telescopic rod 32 is fixedly installed on the L-shaped hanging plate 31. The clamping seat 33 is fixedly installed at the telescopic shaft end of the first micro telescopic rod 32. The second micro telescopic rod 34 is fixedly installed on the clamping seat 33. The telescopic shaft end of the second micro telescopic rod 34 is fixedly connected to the spray pipe 35. The bottom of the spray tube 35 is connected to several spray nozzles 351, and the distribution range of the spray nozzles 351 covers the detection end area of ​​the ultrasonic probe 23. The spray nozzles 351 are fan-shaped nozzles to ensure that a uniform coupling agent layer is formed after the coupling agent is sprayed, avoiding local accumulation. The top of the spray tube 35 is connected to the external coupling agent injection system through the external pipe 36. The external pipe 36 is made of corrosion-resistant PU tubing, and a solenoid valve is installed on the pipe. The solenoid valve is electrically connected to the equipment control system and is used to control the start and stop of the coupling agent spraying and the spraying amount.

[0029] In a specific implementation, position sensors are installed on the first micro telescopic rod 32 and the second micro telescopic rod 34 respectively. The position sensors are used to detect the vertical and horizontal distances between the spray nozzle 351 and the surface to be measured of the titanium alloy structural component. The position sensors are infrared rangefinders, and the detection signals of the sensors are transmitted to the control system in real time. If the distance between the spray nozzle 351 and the workpiece surface is detected to be too close, the control system will control the first micro telescopic rod 32 to retract upward to prevent the spray nozzle from touching the workpiece. If the horizontal position is offset, the control system will adjust the second micro telescopic rod 34 to ensure accurate spraying range.

[0030] In a specific implementation, the spraying of the pre-coating component 3 precedes the detection action of the detection component. After spraying, the pre-coating component 3 retracts and resets. The retracted pre-coating component 3 is located in the lateral area of ​​the ultrasonic probe 23, and the detection component drives the ultrasonic probe 23 to continue to move downward. After spraying, the control system will delay for 1-2 seconds before controlling the retraction of the pre-coating component 3 to ensure that the coupling agent has enough time to form a stable film on the workpiece surface. During retraction, the first micro telescopic rod 32 first retracts upward and then moves to the side through the second micro telescopic rod 34 to avoid the spraying pipe 35 from hitting the mating component or probe during the retraction process.

[0031] The complete working and usage principle of the above embodiments is as follows: First, the inspection personnel load and initially position the workpiece, placing the titanium alloy structural component to be inspected, such as an aerospace titanium alloy plate, stably on the loading and inspection table 151, and clamping the titanium alloy plate with existing fixtures. Then, the equipment is started, and the control system inside the main cabinet 1 synchronously drives multiple moving structures: the second X-axis moving structure 15 drives the loading and inspection table 151 to slide along the X-axis, initially moving the part of the titanium alloy component to be inspected into the inspection area; simultaneously, the Y-axis moving structure 14 carries the horizontal frame 12 along the guide rail of the concave upright frame 11, and the first X-axis moving structure 13 drives the concave carrier plate 131 and the composite inspection mechanism 2 above it to make minor adjustments along the X-axis. The three work together to precisely align the composite inspection mechanism 2 directly above the part of the titanium alloy component to be inspected, completing the pre-inspection positioning calibration and preventing deviations during subsequent inspections.

[0032] After positioning is completed, the pre-coating component 3 is started to spray the coupling agent. The control system adjusts the position of the spray tube 35 according to the detection signals of the position sensors on the first micro telescopic rod 32 and the second micro telescopic rod 34. The first micro telescopic rod 32 adjusts the vertical distance between the spray nozzle 351 and the surface of the titanium alloy part to prevent the spray nozzle from touching the workpiece if the distance is too close or the spray nozzle from being too far away, resulting in uneven spraying. The second micro telescopic rod 34 adjusts the horizontal position of the spray tube 35 to ensure that the distribution range of several fan-shaped spray nozzles 351 just covers the subsequent detection area of ​​the ultrasonic probe 23.

[0033] After the position is adjusted, the external coupling agent injection system delivers coupling agent to the spray tube 35 through the external tube 36 (note: the external tube 36 is a corrosion-resistant PU tube). The coupling agent is evenly sprayed from the spray nozzle 351 onto the titanium alloy part to be tested, forming a thin and uniform coupling agent layer. After spraying, the control system delays for a short period of time to allow the coupling agent to fully adhere to the workpiece surface before controlling the second micro telescopic rod 34 to return to its original position to the side, and the first micro telescopic rod 32 retracts upward to retract the spray tube 35 to the area above and to the side of the ultrasonic probe 23, avoiding obstruction of subsequent detection actions.

[0034] Next, the mating components are activated for sealing and evacuation. The Z-axis telescopic cylinder 21 moves the loading seat 22, ultrasonic probe 23, and mating components downwards until the convex ring 244 at the bottom of the cylindrical seal 24 adheres to the surface of the titanium alloy part. The magnetic ring 245 at the bottom of the convex ring 244 generates a weak adsorption force with the surface of the titanium alloy part, which can compensate for gaps even if there are slight unevennesses on the workpiece surface, ensuring a tight fit. At this time, an external vacuum pump is connected through the external pipe head 251 on the annular tube 25 to extract air from inside the cylindrical seal 24. The built-in pipe heads 252 on the inner side of the annular tube 25 are arranged in a ring and the opening faces the top of the cylindrical seal 24, which can simultaneously extract air from multiple directions to avoid local air residue and prevent coupling agent from being sucked into the pipe head and causing blockage. The air pressure sensor on the inner wall of the sealing sleeve 241 feeds back the internal air pressure value to the vacuum pump controller in real time. When the air pressure reaches the preset negative pressure threshold, the vacuum pump stops pumping air to ensure that a stable closed negative pressure environment is formed inside the cylindrical seal 24, preventing external air from entering the contact surface between the coupling agent and the workpiece.

[0035] Finally, ultrasonic testing is performed. The Z-axis telescopic cylinder 21 is adjusted to a low speed via the flow valve, continuing to move the ultrasonic probe 23 downwards. At this time, the elastic corrugated sleeve 243 of the cylindrical seal 24 is compressed due to the force. This sleeve is made of fluororubber, which can deform flexibly and has good sealing performance, neither hindering the movement of the probe nor hindering the internal negative pressure state. When the detection end of the ultrasonic probe 23 contacts the coupling agent on the surface of the workpiece, the stroke sensor of the cylinder feeds back a signal, and the cylinder stops moving downwards. The ultrasonic probe 23 then emits an ultrasonic detection signal, which is transmitted to the interior of the titanium alloy part through the coupling agent. When it encounters a defect, it will generate a reflected echo. After receiving the echo signal, the probe transmits it to the control system. After processing, the defect location, size, and other information are displayed in real time on the external screen of the main unit cabinet 1. Note: This is existing technology and is not shown in the figure. Thus, the inspection process for surface defects of the titanium alloy structural part is completed. If other parts of the workpiece need to be inspected, the above positioning, spraying, sealing, and inspection steps can be repeated.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 of the technical features. These modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. It should be understood that in this application, the rotating, sliding, meshing, belt-driven and other moving parts are well lubricated and not prone to slippage or wear, and each of them is provided with a corresponding protective shell. However, in the accompanying drawings of this application, the connection state of each moving part is not shown. In addition, it should be understood that each part in this application is made of metal or plastic material with adaptable strength in the relevant field to ensure that its structural rigidity meets the actual requirements.

Claims

1. A surface defect detection device for titanium alloy structural parts, comprising a main cabinet (1), a workbench on the top of the main cabinet (1), two sets of concave uprights (11) fixedly installed on both sides of the workbench surface, a Y-axis moving structure (14) jointly installed on the two sets of concave uprights (11), a horizontal frame (12) mounted on the Y-axis moving structure (14), a first X-axis moving structure (13) mounted on the horizontal frame (12), a concave carrier plate (131) mounted on the first X-axis moving structure (13), and a second X-axis moving structure (15) fixedly installed on the workbench on the top of the main cabinet (1), a loading detection table (151) mounted on the second X-axis moving structure (15), characterized in that, It also includes a composite testing mechanism (2), which is mounted on a concave carrier plate (131); The composite testing mechanism (2) includes testing components, mating components and pre-coating components (3); The detection assembly includes a Z-axis telescopic cylinder (21), a loading seat (22), and an ultrasonic probe (23). The Z-axis telescopic cylinder (21) is fixedly installed on the concave carrier plate (131). The loading seat (22) is fixedly installed at the piston rod end of the Z-axis telescopic cylinder (21). The ultrasonic probe (23) is installed on the loading seat (22). The mating assembly is sleeved on the outside of the ultrasonic probe (23); The fitting components include a cylindrical seal (24) and an annular tube (25). The top of the cylindrical seal (24) is detachably connected to the loading seat (22). The annular tube (25) is fixedly connected to the cylindrical seal (24) and is connected to an external air source through an external pipe connector (251). The cylindrical seal (24) includes a sealing sleeve (241), an elastic corrugated sleeve (243), and a convex ring (244). The sealing sleeve (241) is detachably connected to the loading seat (22). An annular sealing ring (242) is embedded at the top of the sealing sleeve (241), and the annular sealing ring (242) cooperates with the annular groove at the bottom of the loading seat (22). The elastic corrugated sleeve (243) is fixedly connected to the bottom of the sealing sleeve (241), and the convex ring (244) is fixedly connected to the bottom of the elastic corrugated sleeve (243). The pre-coating component (3) is fixedly installed at the bottom of the loading seat (22) and is used to spray coupling agent onto the titanium alloy structural parts to be tested on the loading test table (151).

2. The surface defect detection equipment for titanium alloy structural parts according to claim 1, characterized in that, The annular tube (25) is provided with a plurality of built-in tube heads (252). The built-in tube heads (252) are located inside the cylindrical seal (24) and are distributed in an annular manner. The end opening of the built-in tube heads (252) faces the top area of ​​the cylindrical seal (24).

3. The surface defect detection equipment for titanium alloy structural parts according to claim 1, characterized in that, The bottom of the convex ring (244) is provided with a magnetic ring (245), the end face of the magnetic ring (245) is flush with the end face of the convex ring (244), which is used to improve the tightness of the fit between the convex ring (244) and the surface of the titanium alloy structural component.

4. The surface defect detection equipment for titanium alloy structural parts according to claim 1, characterized in that, The pre-coating assembly (3) includes an L-shaped hanging plate (31), a first micro telescopic rod (32), a clamping seat (33), a second micro telescopic rod (34), and a spray pipe (35). The L-shaped hanging plate (31) is fixedly connected to the bottom of the loading seat (22). The first micro telescopic rod (32) is fixedly installed on the L-shaped hanging plate (31). The clamping seat (33) is fixedly installed at the telescopic shaft end of the first micro telescopic rod (32). The second micro telescopic rod (34) is fixedly installed on the clamping seat (33). The telescopic shaft end of the second micro telescopic rod (34) is fixedly connected to the spray pipe (35). The bottom of the spray tube (35) is connected to several spray nozzles (351), and the distribution range of the several spray nozzles (351) covers the detection end area of ​​the ultrasonic probe (23). The top of the spray tube (35) is connected to the external coupling agent injection system through the external tube (36).

5. The surface defect detection equipment for titanium alloy structural parts according to claim 4, characterized in that, Position sensors are installed on the first micro telescopic rod (32) and the second micro telescopic rod (34), respectively. The position sensors are used to detect the vertical distance and horizontal distance between the spray nozzle (351) and the surface to be tested of the titanium alloy structure.

6. The surface defect detection equipment for titanium alloy structural parts according to claim 1, characterized in that, The inner wall of the sealing sleeve (241) is equipped with a pressure sensor, which is electrically connected to the controller of the external air source and is used to provide feedback on the air pressure value inside the cylindrical seal (24).

7. The surface defect detection equipment for titanium alloy structural parts according to claim 1, characterized in that, When the bottom of the cylindrical seal (24) is attached to the part to be tested of the titanium alloy structure, the external air source draws air from inside the cylindrical seal (24) through the annular pipe (25).

8. The surface defect detection equipment for titanium alloy structural parts according to claim 1, characterized in that, The spraying of the pre-coating component (3) precedes the detection action of the detection component. After the spraying is completed, the pre-coating component (3) retracts and resets. The retracted pre-coating component (3) is located in the side area of ​​the ultrasonic probe (23). The detection component drives the ultrasonic probe (23) to continue to move downward.

9. The surface defect detection equipment for titanium alloy structural parts according to claim 1, characterized in that, After the air inside the cylindrical seal (24) is completely extracted, the Z-axis telescopic cylinder (21) drives the ultrasonic probe (23) to continue to move downward, and the elastic corrugated sleeve (243) is compressed until the detection end of the ultrasonic probe (23) contacts the coupling agent and the part to be tested of the titanium alloy structure.

Images