Titanium alloy machine case internal defect intelligent detection equipment

Abstract

The application discloses a titanium alloy machine case internal defect intelligent detection equipment and relates to the technical field of nondestructive testing.The equipment comprises a supporting base, a self-adaptive electromagnetic active vibration isolation assembly and a magnetic suspension pneumatic fine adjustment assembly.The synergistic effect of the self-adaptive electromagnetic active vibration isolation assembly and the magnetic suspension pneumatic fine adjustment assembly realizes the ultra-stable vibration isolation and nanometer-level accurate positioning of the industrial CT three-coordinate measuring machine in the precise scanning process, which is different from the traditional passive air floating vibration isolation and mechanical transmission positioning hysteresis and friction scheme, so that the high-precision scanning operation is more stable and more accurate.The magnetic suspension pneumatic fine adjustment assembly is provided with a magnetic suspension frictionless support zero contact, zero wear and pneumatic nozzle matrix cooperation, breaks through the bottleneck of the traditional screw guide rail mechanism existing friction stick-slip, idle stroke and large positioning error, realizes smooth support in a non-contact suspension mode, realizes accurate micro power output in a pneumatic reaction force mode and ensures the full-scale range from macro positioning to nanometer-level fine adjustment.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of nondestructive testing, in particular to a titanium alloy machine case internal defect intelligent detection equipment. BACKGROUND

[0002] The titanium alloy machine case internal defect intelligent detection equipment is an automatic system integrating advanced nondestructive testing technology and artificial intelligence algorithm, which is specially used for finding the micro defects in the titanium alloy machine case for aerospace which cannot be seen by naked eyes and automatically identifying, classifying and evaluating.

[0003] In the existing titanium alloy machine case internal defect intelligent detection equipment, the existing high-precision industrial CT measurement equipment usually adopts a scanning system with a traditional mechanical guide rail type measuring machine and a rigid support structure, and the core detection process depends on the cooperative control of a multi-axis mechanical transmission system and a single form of rigid support. After the motor torque output and the transmission system motion conversion, the spatial displacement and scanning positioning of the detection assembly or the titanium alloy machine case are realized. However, this kind of pure mechanical adjustment or rigid connection operation mode has inherent motion precision defects and insufficient anti-vibration interference ability, so that the actual positioning accuracy of the equipment and the nanometer level stability required by the scanning cannot be accurately matched. In the detection process of the titanium alloy machine case, especially the special-shaped structure containing complex cooling channels and blade tenon grooves, the positioning error caused by the asynchronization of multi-axis motion, the measurement repeatability error caused by the mechanical transmission return gap and the imaging vibration caused by the vibration are often present. The traditional shock absorbing pad has inherent contradictions in vibration isolation adjustment, and the vibration isolation performance is easily affected by environmental frequency and amplitude changes. It cannot adaptively offset the wideband vibration interference caused by ground vibration, equipment internal driving and the nonlinear vibration response caused by the deviation of uneven distribution of the clamped weight of the titanium alloy machine case. When dealing with sudden strong vibration, the vibration isolation fails, thereby causing the measurement reliability to decrease and the equipment measurement precision evaluation conclusion to be distorted.

[0004] Therefore, the titanium alloy machine case internal defect intelligent detection equipment is proposed to solve the problems in the prior art. SUMMARY

[0005] The titanium alloy machine case internal defect intelligent detection equipment aims to provide a titanium alloy machine case internal defect intelligent detection equipment. With the synergistic effect of the self-adaptive electromagnetic active vibration isolation assembly and the magnetic suspension pneumatic fine adjustment assembly, the ultra-stable vibration isolation and nanometer level precise positioning of the industrial CT three-coordinate measuring machine in the precise scanning process are realized. Unlike the traditional passive air floating vibration isolation and mechanical transmission positioning hysteresis and friction scheme, the high-precision scanning operation is more stable, more accurate and more reliable.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a titanium alloy machine case internal defect intelligent detection equipment, comprising a support base, an adaptive electromagnetic active vibration isolation assembly, a magnetic suspension pneumatic fine adjustment assembly, the adaptive electromagnetic active vibration isolation assembly and the magnetic suspension pneumatic fine adjustment assembly are arranged on the top of the support base respectively, and the magnetic suspension pneumatic fine adjustment assembly is arranged on the top of the adaptive electromagnetic active vibration isolation assembly;

[0007] The magnetic suspension pneumatic fine adjustment assembly comprises a group of permanent magnets, a group of eddy current sensors, a group of electromagnets, four worms, four turbines, eight nozzles and eight high-speed air valves, the group of permanent magnets are used for providing a static bias magnetic field, the group of electromagnets are used for generating a controllable repulsive force with the group of permanent magnets, the group of eddy current sensors are used for real-time monitoring of a suspension state, the four worms and the four turbines are used for accurately adjusting the jet angle of each two nozzles, the eight high-speed air valves are used for providing high-speed airflow, and the eight nozzles are used for jetting the high-speed airflow to generate a reaction force.

[0008] The adaptive electromagnetic active vibration isolation assembly comprises four elastic matrices, four groups of conductive coils and eight flexible electrodes, the four elastic matrices, the four groups of conductive coils and the eight flexible electrodes constitute four electromagnetic elastic bodies, and the four electromagnetic elastic bodies are used for actively inhibiting high-frequency micro-vibration.

[0009] The top of the support base is provided with a vibration isolation platform, the top of the support base is connected with a laser interferometer assembly through bolts, the top of the vibration isolation platform is connected with a CT detection assembly, and the bottom of the CT detection assembly is provided with a titanium alloy machine case.

[0010] Preferably, the magnetic suspension pneumatic fine adjustment assembly further comprises a marble platform and a suspension table, the top of the marble platform is connected with the bottom of the group of permanent magnets in a embedded mode, the top of the marble platform is connected with the bottom of the group of eddy current sensors, a group of grooves are formed in the bottom of the suspension table, and the top of the suspension table is connected with the bottom of the titanium alloy machine case.

[0011] Preferably, the inner walls of the group of grooves are connected with the outer walls of the group of electromagnets, the bottom of the suspension table is connected with a ring track, eight rollers are slidably connected between the outer walls of the ring track, the bottom of each two rollers is connected with a fixed plate, the bottom of each four fixed plates is connected with an inner gear ring through bolts, and the bottom of the suspension table is connected with a transmission motor.

[0012] Preferably, the power output end of the transmission motor is rotatably connected with a driving gear, and the driving gear is rotatably connected with an inner gear ring, the bottom of the inner gear ring is circumferentially provided with four connecting frames, the outer wall of each of the four connecting frames is provided with a micro servo motor, the power output end of each of the four micro servo motors is rotatably connected with a corresponding worm, and the four worms are fixed between the outer walls of the connecting frames through two bearings.

[0013] Preferably, the bottom of each of the four worms is rotatably connected with a corresponding turbine, a rotating shaft is inserted between the inner surfaces of the four turbines, the outer surface of each of the four rotating shafts is symmetrically connected with a roller bearing, the outer surface of each of the two roller bearings is connected with a bearing seat, the top of each of the two bearing seats is connected with the bottom of a corresponding connecting frame, the outer wall of each of the four rotating shafts is fixedly sleeved with a connecting plate, the bottom of each of the two connecting plates is connected with a support plate, the bottom of each of the four support plates is connected with the top of a corresponding nozzle, and the gas inlet end of each of the eight nozzles is in communication with the gas outlet end of a corresponding high-speed gas valve.

[0014] Preferably, the self-adapting electromagnetic active vibration isolation assembly further comprises four metal seats and eight flange plates, the bottom of each of the four metal seats is boltedly connected with the top of the support base, and each of the four metal seats is provided with a hydraulic servo cylinder.

[0015] Preferably, the four hydraulic servo cylinders are used for macro and low-frequency vibration compensation, the shaft end of each of the four hydraulic servo cylinders is sleeved with a corresponding flange plate, the top of each of the four flange plates is connected with the bottom of the vibration isolation platform, and the opposite sides of each of the two flange plates are connected with a gasket.

[0016] Preferably, the opposite sides of each of the two gaskets are connected with two corresponding flexible electrodes, the opposite sides of each of the two flexible electrodes are connected with the top and the bottom of an elastic matrix, and the outer surface of each of the four elastic matrices is sleeved with a corresponding group of conductive coils.

[0017] Preferably, the outer surface of each of the four elastic matrices is coated with an encapsulation shell, the outer wall of each of the four flange plates is provided with a vibration displacement sensor, and each of the four vibration displacement sensors is used for real-time absolute displacement and acceleration change of the vibration isolation platform.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] In the application, by the synergistic effect of the adaptive electromagnetic active vibration isolation assembly and the magnetic suspension pneumatic fine adjustment assembly, the ultra-stable vibration isolation and nanometer-level accurate positioning of the industrial CT three-coordinate measuring machine in the precision scanning process are realized, which is different from the traditional passive air floating vibration isolation and mechanical transmission positioning hysteresis and friction scheme, so that the high-precision scanning operation is more stable, more accurate and more reliable. Firstly, the magnetic suspension pneumatic fine adjustment assembly breaks through the bottleneck of the traditional screw guide mechanism with friction stick-slip and large idle stroke leading to large positioning error, realizes smooth support by non-contact suspension, realizes accurate micro power output by pneumatic reaction force, ensures smooth and accurate workpiece pose adjustment in the full-scale range from macro positioning to nanometer-level fine adjustment, avoids stick-slip phenomenon caused by mechanical friction, prevents CT image jitter and measurement error caused by rigid transmission overshoot, and simultaneously realizes the composite design of macro leveling by the hydraulic servo cylinder and high-frequency active vibration suppression by the electromagnetic elastomer of the adaptive electromagnetic active vibration isolation assembly, which can overcome the low-frequency vibration of the foundation through the large stroke output of the hydraulic system, and actively offset the high-frequency micro-vibration through the millisecond response of the electromagnetic body, completely get rid of the problems of vibration isolation blind area and resonance caused by changes in environmental vibration frequency and amplitude in the traditional passive vibration isolation scheme, and dynamically adapt to the interference caused by sudden ground vibration and equipment internal motor start-stop, thereby greatly reducing the blur and reconstruction artifact risk of the CT projection image, and far exceeding the performance limit of the traditional vibration isolation method. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structure perspective view of the titanium alloy machine case internal defect intelligent detection equipment of the application;

[0021] Figure 2 It is a side view structure perspective view of the titanium alloy machine case internal defect intelligent detection equipment of the application;

[0022] Figure 3 It is a structure perspective view of the magnetic suspension pneumatic fine adjustment assembly of the titanium alloy machine case internal defect intelligent detection equipment of the application;

[0023] Figure 4 It is an installation position structure schematic view of the electromagnet, annular track and inner gear ring of the titanium alloy machine case internal defect intelligent detection equipment of the application;

[0024] Figure 5 It is an installation position structure schematic view of the suspension table, groove and electromagnet of the titanium alloy machine case internal defect intelligent detection equipment of the application;

[0025] Figure 6 It is an installation position structure schematic view of the inner gear ring and driving gear of the titanium alloy machine case internal defect intelligent detection equipment of the application;

[0026] Figure 7is an enlarged view of the structure at A in Figure 3

[0027] Figure 8 is an enlarged view of the structure at B in Figure 5

[0028] Figure 9 is an installation position structure diagram of a roller and a fixed plate in a titanium alloy machine case internal defect intelligent detection equipment;

[0029] Figure 10 is an installation position structure diagram of a bearing seat, a connecting plate and a support plate in a titanium alloy machine case internal defect intelligent detection equipment;

[0030] Figure 11 is an installation position structure diagram of a connecting frame, a micro servo motor and a worm in a titanium alloy machine case internal defect intelligent detection equipment;

[0031] Figure 12 is a structure perspective view of a self-adaptive electromagnetic active vibration isolation assembly in a titanium alloy machine case internal defect intelligent detection equipment;

[0032] Figure 13 is an installation position structure diagram of a gasket, a hydraulic servo cylinder and a flange plate in a titanium alloy machine case internal defect intelligent detection equipment;

[0033] Figure 14 is an installation position structure diagram of an elastic matrix, a conductive coil and a packaging shell in a titanium alloy machine case internal defect intelligent detection equipment.

[0034] In the figure: 100, support base; 200, vibration isolation platform; 300, CT detection assembly; 400, titanium alloy machine case; 500, self-adaptive electromagnetic active vibration isolation assembly; 501, metal seat; 502, hydraulic servo cylinder; 503, flange plate; 504, gasket; 505, flexible electrode; 506, elastic matrix; 507, conductive coil; 508, packaging shell; 509, vibration displacement sensor; 600, magnetic suspension pneumatic fine adjustment assembly; 601, marble platform; 602, permanent magnet; 603, electric eddy current sensor; 604, suspension table; 605, grooving; 606, electromagnet; 607, annular track; 608, inner gear ring; 609, transmission motor; 610, driving gear; 611, roller; 612, fixed plate; 613, connecting frame; 614, micro servo motor; 615, worm; 616, turbine; 617, rotating shaft; 618, roller bearing; 619, bearing seat; 620, connecting plate; 621, support plate; 622, nozzle; 623, high-speed air valve; 700, laser interferometer assembly. DETAILED DESCRIPTION ​​

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] As shown in Figures 1-2 The present embodiment discloses a titanium alloy case internal defect intelligent detection equipment, which comprises a supporting base 100, an adaptive electromagnetic active vibration isolation assembly 500, and a magnetic suspension pneumatic fine adjustment assembly 600. The adaptive electromagnetic active vibration isolation assembly 500 and the magnetic suspension pneumatic fine adjustment assembly 600 are respectively arranged on the top of the supporting base 100, and the magnetic suspension pneumatic fine adjustment assembly 600 is arranged on the top of the adaptive electromagnetic active vibration isolation assembly 500.

[0037] As shown in Figures 3-4 and Figure 11 The magnetic suspension pneumatic fine adjustment assembly 600 comprises a group of permanent magnets 602, a group of eddy current sensors 603, a group of electromagnets 606, four worms 615, four turbines 616, eight nozzles 622, and eight high-speed air valves 623. The group of permanent magnets 602 is used to provide a static bias magnetic field, the group of electromagnets 606 is used to generate a controllable repulsive force with the group of permanent magnets 602, the group of eddy current sensors 603 is used for real-time monitoring of the suspension state, the four worms 615 and the four turbines 616 are used to accurately adjust the jet angle of each two nozzles 622, and the eight high-speed air valves 623 are used to provide high-speed airflow, and the eight nozzles 622 are used to jet high-speed airflow to generate a reaction force.

[0038] As shown in Figure 14 The adaptive electromagnetic active vibration isolation assembly 500 comprises four elastic matrices 506, four groups of conductive coils 507, and eight flexible electrodes 505. The four elastic matrices 506, the four groups of conductive coils 507, and the eight flexible electrodes 505 form four electromagnetic elastic bodies, and the four electromagnetic elastic bodies are used for active suppression of high-frequency micro-vibration.

[0039] The embodiment is mainly aimed at the existing intelligent detection equipment for internal defects of titanium alloy case 400, the existing high-precision industrial CT measurement equipment usually adopts a scanning system with a traditional mechanical guide rail type measuring machine and a rigid support structure, and its core detection process relies on the cooperative control of a multi-axis mechanical transmission system and a single form of rigid support. After the motor torque output and the transmission system motion conversion, the spatial displacement and scanning positioning of the detection assembly or the titanium alloy case 400 are realized. However, this pure mechanical adjustment or rigid connection operation mode has inherent motion precision defects and insufficient anti-vibration interference ability, which makes it difficult to accurately match the actual positioning accuracy and the required nanometer-level stable scanning requirement. In the detection process of the titanium alloy case 400, especially the special-shaped structure containing complex cooling channels and blade tenon grooves, positioning errors caused by multi-axis motion asynchronization, measurement repeatability errors caused by mechanical transmission back gap, and imaging artifacts caused by vibration often occur. The use of traditional shock absorbing pads for vibration isolation adjustment has inherent contradictions, and its vibration isolation performance is easily affected by environmental frequency and amplitude changes. It cannot adaptively offset the wideband vibration interference caused by ground vibration, equipment internal driving, and the nonlinear vibration response caused by the uneven distribution of the clamped weight of the titanium alloy case 400. In the case of sudden strong vibration, the vibration isolation fails, resulting in a decrease in measurement reliability and distortion of the equipment measurement precision evaluation conclusion, etc.

[0040] The embodiment is completed to solve the problems of the prior art, and through the cooperation of the adaptive electromagnetic active vibration isolation assembly 500 and the magnetic suspension pneumatic fine adjustment assembly 600, the ultra-stable vibration isolation and nanoscale accurate positioning of the industrial CT three-coordinate measuring machine in the precise scanning process are realized, which is different from the traditional passive air floating vibration isolation and mechanical transmission positioning hysteresis and friction scheme, so that the high-precision scanning operation is more stable, more accurate and more reliable. Firstly, the magnetic suspension pneumatic fine adjustment assembly 600 has zero contact and zero wear in the magnetic suspension friction-free support and cooperates with the pneumatic nozzle matrix, breaks through the bottleneck of the traditional screw guide mechanism with frictional stick-slip and large positioning error caused by idle stroke, realizes smooth support in non-contact suspension, realizes accurate micro power output in pneumatic reaction force, ensures smooth and accurate workpiece pose adjustment in the full-scale range from macro positioning to nanoscale fine adjustment, avoids stick-slip phenomenon caused by mechanical friction, prevents CT image shaking and measurement error caused by rigid transmission overshoot, and simultaneously realizes the composite design of the adaptive electromagnetic active vibration isolation assembly 500 through the macro leveling of the hydraulic servo cylinder 502 and the high-frequency active vibration suppression of the electromagnetic elastomer, which can overcome the low-frequency vibration of the foundation through the large stroke output of the hydraulic system and actively offset the high-frequency micro-vibration through the millisecond response of the electromagnetic elastomer, completely get rid of the problems of vibration isolation blind area and resonance caused by changes in environmental vibration frequency and amplitude in the traditional passive vibration isolation scheme, and dynamically adapt to the interference caused by sudden ground vibration and equipment internal motor start-stop, thereby greatly reducing the blur and reconstruction artifact risk of the CT projection image, far exceeding the performance limit of the traditional vibration isolation method.

[0041] According to Figure 1 and Figure 2 , the top of the support base 100 is provided with a vibration isolation platform 200, the top of the support base 100 is bolted with a laser interferometer assembly 700, the top of the vibration isolation platform 200 is connected with a CT detection assembly 300, and the bottom of the CT detection assembly 300 is provided with a titanium alloy machine case 400.

[0042] In the embodiment of the present application, the support base 100 is first adopted as the core bearing unit of the device, which is integrally casted by high-rigidity alloy material, and its structure is optimized by finite element analysis, so as to stably bear the overall load of the top vibration isolation platform 200, the CT detection assembly 300, the titanium alloy machine case 400 and the laser interferometer assembly 700. The integrated design effectively avoids the stress concentration and micro-deformation caused by welding or bolt connection of the traditional spliced base, and provides a very high installation reference flatness and long-term stability for the top adaptive electromagnetic active vibration isolation assembly 500 and the magnetic suspension pneumatic fine adjustment assembly 600. The top of the support base 100 is rigidly connected with the laser interferometer assembly 700 through high-strength bolts, and the laser beam emitted thereby can accurately measure the absolute position and micro-angle change of the suspended platform 604 and the titanium alloy machine case 400 in three-dimensional space in real time and non-contact manner, so as to provide ultimate feedback data for the nanometer positioning of the magnetic suspension pneumatic fine adjustment assembly 600, and ensure the authenticity and accuracy of the fine adjustment result. The vibration isolation platform 200 is a key structure connecting the upper and lower parts, and its core function is to losslessly transmit the active vibration suppression effect generated by the adaptive electromagnetic active vibration isolation assembly 500 upward. On one hand, it provides an extremely stable installation carrier for the CT detection assembly 300, and on the other hand, it ensures that the relative geometric relationship among the X-ray source, the detector and the titanium alloy machine case 400 of the CT detection assembly 300 is always stable.

[0043] According to Figure 3 and Figure 5 It is shown that the magnetic suspension pneumatic fine adjustment assembly 600 further comprises a marble platform 601 and a suspended platform 604. The top of the marble platform 601 and the bottom of a group of permanent magnets 602 are embedded and connected. The top of the marble platform 601 and the bottom of a group of eddy current sensors 603 are connected. A group of grooves 605 are arranged on the bottom of the suspended platform 604, and the top of the suspended platform 604 and the bottom of the titanium alloy machine case 400 are connected.

[0044] In the embodiment of the present application, firstly, the marble platform 601 is selected from natural marble material with low thermal expansion coefficient, and the marble platform 601 is hardly affected by environmental temperature fluctuations, which can effectively avoid the deformation of the traditional metal platform due to temperature changes, thereby providing an un-deformed installation reference for the embedded permanent magnet 602 and the eddy current sensor 603 on the top, secondly, the groove 605 at the bottom of the suspension platform 604 is precisely matched with the installation size of the electromagnet 606, which ensures the positional accuracy of the electromagnet 606 corresponding to the lower permanent magnet 602, and further realizes the stable repulsive force between the two, so that the suspension platform 604 is separated from the rigid contact of the marble platform 601, completely eliminating the frictional resistance of the traditional mechanical guide rail, and at the same time, the eddy current sensor 603 can monitor the gap distance between the suspension platform 604 and the marble platform 601 in real time, and the current of the electromagnet 606 can be corrected in time to avoid the suspension height deviation of the suspension platform 604 due to uneven weight distribution after clamping the titanium alloy cartridge 400, thereby ensuring the stability of the reference after the cartridge is installed.

[0045] According to Figures 8-9 As shown in FIG. 6, the inner wall of a group of grooves 605 is connected with the outer wall of a group of electromagnets 606, the bottom of the suspension platform 604 is connected with a ring-shaped track 607, eight rollers 611 are slidingly connected between the outer walls of the ring-shaped track 607, the bottom of every two rollers 611 is connected with a fixed plate 612, the bottom of four fixed plates 612 is bolted with an inner gear ring 608, and the bottom of the suspension platform 604 is connected with a transmission motor 609.

[0046] In the embodiment of the present application, firstly, the interference fit design of the groove 605 and the electromagnet 606 ensures that the electromagnet 606 is firmly installed at the bottom of the suspension platform 604, avoiding the magnetic field imbalance caused by the displacement of the electromagnet 606 under high-frequency vibration, secondly, the ring-shaped track 607 adopts an I-shaped cross-section design, and the grooves on both sides can precisely fit the flanges of the rollers 611, which can not only limit the sliding track of the rollers 611, but also bear the radial force transmitted by the inner gear ring 608, thereby avoiding the derailment of the rollers 611 during sliding, wherein the eight rollers 611 are connected by the fixed plate 612 and the inner gear ring 608 in groups of two, so that the weight of the inner gear ring 608 is evenly distributed to the four fixed plates 612, which can ensure that the inner gear ring 608 slides along the ring-shaped track 607 with balanced force, reducing the wear of the ring-shaped track 607 caused by excessive local force, and the transmission motor 609 is fixed on the motor support at the bottom of the suspension platform 604 by bolts, and the installation position is concentric with the center axis of the inner gear ring 608, which ensures that the transmission is stable when the subsequent driving gear 610 meshes with the inner gear ring 608, and avoids uneven meshing gap caused by eccentricity.

[0047] According to Figure 11As shown, the power output end of the transmission motor 609 is rotatably connected with a driving gear 610, and the driving gear 610 is rotatably connected with the inner gear ring 608, the bottom of the inner gear ring 608 is arrayed with four connecting frames 613, the outer wall of the four connecting frames 613 is respectively installed with a micro servo motor 614, the power output end of the four micro servo motors 614 is rotatably connected with a corresponding worm 615, and the four worms 615 are fixed between the outer walls of the connecting frames 613 through two bearings.

[0048] In the embodiment of the application, firstly, the power output end of the transmission motor 609 is fixed with the driving gear 610 through key connection, which not only ensures the reliability of power transmission, but also facilitates disassembly and assembly during subsequent maintenance, secondly, the tooth shape angle of the driving gear 610 and the inner gear ring 608 is consistent, which can effectively reduce the common slippage phenomenon in traditional belt transmission, thereby ensuring the positioning accuracy of the suspension platform 604 during the circumferential movement along the annular track 607, the four connecting frames 613 are fixed on the bottom of the inner gear ring 608 through welding, and the welding points are subjected to stress relief treatment to avoid power transmission error caused by frame vibration during subsequent operation of the micro servo motor 614, wherein the worm 615 is fixed on the connecting frame 613 through two deep groove ball bearings, which can reduce the radial runout of the worm 615 during rotation, thereby providing guarantee for the accuracy of subsequent angle adjustment of the nozzle 622.

[0049] According to Figures 10-11 As shown, the bottom of the four worms 615 is rotatably connected with a corresponding turbine 616, the inner surfaces of the four turbines 616 are respectively inserted with a rotating shaft 617, the outer surfaces of the four rotating shafts 617 are symmetrically connected with a roller bearing 618, the outer surfaces of every two roller bearings 618 are connected with a bearing seat 619, the top of every two bearing seats 619 is connected with the bottom of a corresponding connecting frame 613, the outer walls of the two ends of the four rotating shafts 617 are fixedly sleeved with a connecting plate 620, the bottom of every two connecting plates 620 is connected with a support plate 621, the bottom of the four support plates 621 is connected with the top of a corresponding two nozzles 622, and the gas inlet end of the eight nozzles 622 is in communication with the gas outlet end of a corresponding high-speed gas valve 623.

[0050] In the embodiment of the present application, the hand procedure worm 615 and the turbine 616 adopt Archimedes spiral tooth design, which has accurate transmission ratio and self-locking characteristics, can effectively avoid the situation that the angle drift occurs after the nozzle 622 is adjusted to the target angle due to external force, wherein the rotating shaft 617 and the turbine 616 are connected through interference fit, which ensures that the rotating motion of the turbine 616 can be synchronously transmitted to the rotating shaft 617, then the roller bearing 618 selects high-precision angular contact ball bearing, which can bear radial force and axial force at the same time, avoiding the axial movement of the rotating shaft 617 during rotation, then the bearing seat 619 is fixed on the bottom of the connecting frame 613 through bolts, which can effectively ensure that the axis of the rotating shaft 617 is consistent with the axis of the turbine 616, at the same time, the connecting plate 620 and the rotating shaft 617 are fixed through a flat key, and the support plate 621 is firmly welded with the connecting plate 620, so that the rotation of the turbine 616 can be accurately converted into the angle adjustment of the nozzle 622 through the transmission path of the rotating shaft 617, the connecting plate 620 and the support plate 621, wherein the high-speed air valve 623 selects an electromagnetic air valve with a response time less than 10ms, and the high-speed air valve 623 and the nozzle 622 are connected through a metal bellows, which can ensure the sealing of the air flow and avoid the vibration of the air valve being transmitted to the nozzle 622, thereby ensuring the stability of the nozzle 622 when spraying.

[0051] According to Figure 13 As shown in the figure, the adaptive electromagnetic active vibration isolation assembly 500 further comprises four metal seats 501 and eight flanges 503, and the bottoms of the four metal seats 501 are connected to the top of the support base 100 through bolts, and each of the tops of the four metal seats 501 is provided with a hydraulic servo cylinder 502, and the four hydraulic servo cylinders 502 are arranged in a four-corner symmetrical manner.

[0052] In the embodiment of the present application, first, the metal seat 501 is welded and formed by a Q235 steel plate, and the bottom thereof is connected to the support base 100 through four high-strength bolts, so as to ensure that the metal seat 501 is firmly installed and avoid vibration caused by loosening of the base when the hydraulic servo cylinder 502 operates, wherein the four hydraulic servo cylinders 502 are arranged in a four-corner symmetrical manner, so that the support force of the four hydraulic servo cylinders 502 is evenly distributed on the vibration isolation platform 200, and the inclination of the vibration isolation platform 200 caused by uneven distribution of the hydraulic servo cylinders 502 is avoided.

[0053] According to Figure 13 As shown in the figure, the four hydraulic servo cylinders 502 are used for macro and low-frequency vibration compensation, the shaft ends of the four hydraulic servo cylinders 502 are connected to the corresponding flanges 503, wherein the tops of the four flanges 503 are connected to the bottom of the vibration isolation platform 200, and each of the opposite sides of every two flanges 503 is connected to a gasket 504.

[0054] In the embodiment of the present application, first, the hydraulic servo cylinder 502 selects a high-precision hydraulic servo cylinder 502, which can effectively compensate for low-frequency vibrations generated by ground equipment operation, personnel movement, etc. through large-stroke output, thereby solving the problem that the traditional passive vibration isolation pad cannot offset low-frequency vibrations. The flange plate 503 is connected to the bottom of the vibration isolation platform 200 through bolts, and spring washers are installed at the bolt connection to prevent bolt loosening caused by long-term operation of the equipment. Then, the gasket 504 arranged between the flange plates 503 is made of nitrile rubber material, which can not only buffer the assembly stress between the hydraulic servo cylinder 502 and the vibration isolation platform 200, and avoid local stress deformation of the vibration isolation platform 200 caused by assembly errors, but also play an auxiliary damping role under high-frequency vibration, thereby further weakening vibration transmission.

[0055] According to Figure 14 As shown in the figure, the opposite sides of each two gaskets 504 are connected to the corresponding two flexible electrodes 505, and the opposite sides of each two flexible electrodes 505 are connected to the top and bottom of the elastic matrix 506, and the outer surfaces of the four elastic matrices 506 are connected to the corresponding set of conductive coils 507.

[0056] In the embodiment of the present application, first, the flexible electrode 505 is made of copper foil and polyimide film composite, which has good conductivity and flexibility, can adapt to the slight deformation of the elastic matrix 506 during vibration, and avoid poor contact caused by deformation of the traditional rigid electrode. Secondly, the elastic matrix 506 is made of natural rubber material, which can provide flexible support for the conductive coil 507 and produce controllable deformation under the action of electromagnetic force, thereby realizing active suppression of high-frequency vibration. Moreover, the conductive coil 507 is wound with enameled copper wire, and the conductive coil 507 can generate controllable electromagnetic force in cooperation with the flexible electrode 505 after being energized. By adjusting the current size, the electromagnetic force amplitude can be changed in real time, thereby accurately offsetting the high-frequency micro-vibration generated by the CT detection assembly 300 operation, equipment internal motor start-stop, etc. and solving the problem of vibration isolation blind area in the high-frequency band of the traditional passive vibration isolation.

[0057] According to Figure 14 As shown in the figure, the outer surfaces of the four elastic matrices 506 are covered with an encapsulating shell 508, wherein the outer walls of the four flange plates 503 are each mounted with a vibration displacement sensor 509, and the four vibration displacement sensors 509 are each used to measure the absolute displacement and acceleration change of the vibration isolation platform 200 in real time.

[0058] In the embodiment of the present application, firstly, the packaging shell 508 is injection molded by ABS engineering plastic, and the inner wall of the packaging shell 508 is sprayed with a conductive coating, which can protect the elastic matrix 506 and the conductive coil 507 from being polluted by workshop dust and oil stains, and also can play a certain electromagnetic shielding effect, reducing the interference of the magnetic field generated by the conductive coil 507 on the CT detection assembly 300. Secondly, the vibration displacement sensor 509 is selected to be a high-precision vibration displacement sensor 509, the installation position of which is kept consistent with the edge distance of the vibration isolation platform 200, which can collect the absolute displacement and acceleration change data of the vibration isolation platform 200 in X, Y and Z directions in real time, and transmit the data to the control system. According to the vibration signal fed back by the vibration displacement sensor 509, the output force of the hydraulic servo cylinder 502 and the current size of the conductive coil 507 are adjusted in real time, so as to form an active vibration isolation closed loop of monitoring, analyzing and adjusting, which can ensure that the vibration isolation platform 200 is always in a stable state, avoiding the problems of blurred CT projection image and reconstructed artifacts caused by vibration transmission.

[0059] In use, in the whole process of the internal defect intelligent detection equipment of the titanium alloy cartridge 400, when the equipment starts to work, the adaptive electromagnetic active vibration isolation assembly 500 enters the working state first, the vibration displacement sensors 509 distributed around the vibration isolation platform 200 continuously collect the absolute displacement and acceleration data of the platform in X, Y and Z directions, and transmit these real-time signals to the central control system. After the system processes and analyzes the data, it generates corresponding compensation instructions. For low-frequency and large-amplitude vibration interference, the control system will issue instructions to drive the four hydraulic servo cylinders 502 arranged in a four-corner symmetrical manner to act. At this time, the hydraulic servo cylinders 502 output accurate stroke according to the instructions, and through the flange plate 503 rigidly connected thereto, the push or pull force is applied to the vibration isolation platform 200 to realize macro-level leveling and compensation, effectively suppressing low-frequency vibration caused by ground equipment operation or personnel movement. For high-frequency and micro-amplitude vibration, the control system converts the instructions into high-precision current signals and transmits them to the four groups of conductive coils 507 embedded in the elastic matrix 506. When the four groups of conductive coils 507 are energized, they interact in the magnetic field to cause the elastic matrix 506 wrapped outside to deform accurately by microns or even nanometers. The reverse force generated by the deformation is efficiently transmitted to the vibration isolation platform 200 through the upper and lower flexible electrodes 505 and buffer pads 504, thereby actively and real-time canceling the high-frequency micro-vibration induced by the CT detection assembly 300 itself or the internal motor start-stop, ensuring that the vibration isolation platform 200 and all components carried thereby are always in an extremely stable static environment. When the vibration isolation platform 200 reaches a stable state, the magnetic suspension pneumatic fine adjustment assembly 600 begins to perform precise position adjustment of the titanium alloy cartridge 400. First, the electromagnets 606 at the bottom of the suspension platform 604 are energized to generate a controllable repulsive force with the permanent magnets 602 pre-embedded in the marble platform 601, so that the entire suspension platform 604 is stably suspended and maintains a constant preset gap with the marble platform 601. The gap value is monitored in real time by a group of high-precision eddy current sensors 603, and the feedback data is used to dynamically adjust the current of the electromagnets 606, thereby realizing stable maintenance of the suspension height and frictionless zero-contact support. When horizontal rotation of the titanium alloy cartridge 400, i.e., adjustment in the θz direction, is required, the transmission motor 609 is started to drive the inner ring gear 608 precisely engaged with the active gear 610 to rotate, wherein the inner ring gear 608 drives the eight rollers 611 to roll along the annular track 607 through the fixed plate 612, thereby guiding the entire suspension platform 604 to rotate accurately by 360° and achieving locking positioning at any target angle. When nanometer-level fine adjustment in the height, i.e., the Z direction, and the inclination angles θx and θy is required, the control system will issue instructions to start the symmetrically arranged micro servo motor 614. When the micro servo motor 614 receives the control instructions, it drives the turbine 616 to rotate through the worm 615,Relying on the precise transmission and self-locking characteristics inherent in the turbine 616 and the worm 615, the rotation movement of the turbine 616 is transmitted precisely and without reverse clearance through the linkage of the rotating shaft 617, the connecting plate 620 and the supporting plate 621, and finally converted into the precise adjustment of the jet angle of the nozzle 622. Subsequently, the high-speed air valve 623 receives the instruction to quickly open and deliver the high-speed airflow provided by the external air source to the nozzle 622. At this time, the nozzle 622 sprays the airflow downward, and according to Newton's third law, the resulting reaction force precisely acts on the suspension platform 604. Then, the control system can precisely generate the required lifting force or tilting torque by independently regulating the jet angle and air flow of the nozzles 622 at the four positions. In order to lift one side, the corresponding nozzles 622 on that side increase the air jet. In order to balance this torque, the nozzles 622 on the opposite side will adaptively adjust the air jet parameters, thereby achieving the stable adjustment of the height and attitude of the suspension platform 604 at the nanometer level without overshoot. The final effect of the entire fine adjustment process is verified and fed back in real time by the laser interferometer assembly 700 rigidly connected to the support base 100. The laser beam emitted by the laser interferometer assembly 700 precisely measures the absolute position and micro-angle change of the suspension platform 604 and the titanium alloy cartridge 400 in three-dimensional space without contact, forming the outermost precise measurement loop of the system, ensuring that the workpiece is precisely positioned to the best scanning position, thereby laying a solid foundation for obtaining CT projection images with ultra-high definition.

[0060] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A titanium alloy machine case internal defect intelligent detection device, characterized in that: The application relates to a support base (100), an adaptive electromagnetic active vibration isolation assembly (500) and a magnetic suspension pneumatic fine adjustment assembly (600), wherein the adaptive electromagnetic active vibration isolation assembly (500) and the magnetic suspension pneumatic fine adjustment assembly (600) are arranged on the top of the support base (100), and the magnetic suspension pneumatic fine adjustment assembly (600) is arranged on the top of the adaptive electromagnetic active vibration isolation assembly (500). The magnetic suspension pneumatic fine adjustment assembly (600) comprises a group of permanent magnets (602), a group of eddy current sensors (603), a group of electromagnets (606), four worms (615), four turbines (616), eight nozzles (622) and eight high-speed air valves (623), the group of permanent magnets (602) are used for providing a static bias magnetic field, the group of electromagnets (606) are used for generating controllable repulsive force with the group of permanent magnets (602), the group of eddy current sensors (603) are used for real-time monitoring of a suspension state, the four worms (615) and the four turbines (616) are used for accurately adjusting the jet angle of each two nozzles (622), and the eight high-speed air valves (623) are used for providing high-speed airflow, and the eight nozzles (622) are used for jetting the high-speed airflow to generate reaction force. The adaptive electromagnetic active vibration isolation assembly (500) comprises four elastic substrates (506), four groups of conductive coils (507) and eight flexible electrodes (505), the four elastic substrates (506), the four groups of conductive coils (507) and the eight flexible electrodes (505) form four electromagnetic elastic bodies, and the four electromagnetic elastic bodies are used for actively inhibiting high-frequency micro-vibration. The top of the support base (100) is provided with a vibration isolation platform (200), the top of the support base (100) is connected with a laser interferometer assembly (700) through bolts, the top of the vibration isolation platform (200) is connected with a CT detection assembly (300), and the bottom of the CT detection assembly (300) is provided with a titanium alloy machine case (400).

2. The titanium alloy case internal defect intelligent detection device according to claim 1, characterized in that: The magnetic suspension pneumatic fine adjustment assembly (600) further comprises a marble platform (601) and a suspension table (604), the top of the marble platform (601) is connected with the bottom of the group of permanent magnets (602) in a clamping mode, and the top of the marble platform (601) is connected with the bottom of the group of eddy current sensors (603).

3. The titanium alloy case internal defect intelligent detection device according to claim 2, characterized in that: The bottom of the suspension table (604) is provided with a group of grooves (605), and the top of the suspension table (604) is connected with the bottom of the titanium alloy machine case (400). The inner walls of the group of grooves (605) are connected with the outer walls of the group of electromagnets (606), the bottom of the suspension table (604) is connected with an annular track (607), eight rollers (611) are slidably connected between the outer walls of the annular track (607), the bottom of each two rollers (611) is connected with a fixed plate (612), the bottom of the four fixed plates (612) is connected with an inner gear ring (608) through bolts, and the bottom of the suspension table (604) is connected with a transmission motor (609).

4. The titanium alloy case internal defect intelligent detection device according to claim 3, characterized in that: The power output end of the transmission motor (609) is rotatably connected with a driving gear (610), and the driving gear (610) is rotatably connected with an inner gear ring (608), and the bottom of the inner gear ring (608) is arranged with four connecting frames (613) in the circumferential direction, and the outer wall of each of the four connecting frames (613) is mounted with a micro servo motor (614), and the power output end of each of the four micro servo motors (614) is rotatably connected with a corresponding worm (615), and the four worms (615) are fixed between the outer walls of the connecting frames (613) through two bearings.

5. The titanium alloy case internal defect intelligent detection device according to claim 4, characterized in that: The bottom of each of the four worms (615) is rotatably connected with a corresponding turbine (616), and the inner surfaces of the four turbines (616) are each inserted with a rotating shaft (617), and the outer surfaces of the four rotating shafts (617) are each symmetrically connected with a roller bearing (618), and the outer surfaces of each two roller bearings (618) are each connected with a bearing seat (619), and the top of each two bearing seats (619) is connected with the bottom of a corresponding connecting frame (613), and the outer walls of both ends of each of the four rotating shafts (617) are fixedly sleeved with a connecting plate (620), and the bottom of each two connecting plates (620) is connected with a supporting plate (621), and the bottom of each of the four supporting plates (621) is connected with the top of a corresponding two nozzles (622), and the gas inlet ends of the eight nozzles (622) are each in communication with the gas outlet end of a corresponding high-speed gas valve (623).

6. The titanium alloy case internal defect intelligent detection device according to claim 1, characterized in that: The adaptive electromagnetic active vibration isolation assembly (500) further comprises four metal seats (501) and eight flange plates (503), and the bottoms of the four metal seats (501) are bolted to the top of the supporting base (100), and the top of each of the four metal seats (501) is mounted with a hydraulic servo cylinder (502), and the four hydraulic servo cylinders (502) are arranged in a four-corner symmetry.

7. The titanium alloy case internal defect intelligent detection device according to claim 6, characterized in that: The four hydraulic servo cylinders (502) are used for macro and low-frequency vibration compensation, the shaft ends of the four hydraulic servo cylinders (502) are each sleeved with a corresponding flange plate (503), and the top of each of the four flange plates (503) is connected with the bottom of the vibration isolation platform (200), and the opposite sides of each two flange plates (503) are each connected with a gasket (504).

8. The titanium alloy case internal defect intelligent detection device according to claim 7, characterized in that: The opposite sides of each two gaskets (504) are each connected with a corresponding two flexible electrodes (505), and the opposite sides of each two flexible electrodes (505) are each connected with the top and bottom of an elastic matrix (506), and the outer surfaces of the four elastic matrices (506) are each sleeved with a corresponding set of conductive coils (507).

9. The titanium alloy case internal defect intelligent detection device according to claim 8, characterized in that: The outer surfaces of the four elastic matrices (506) are each coated with an encapsulation shell (508), and the outer walls of the four flange plates (503) are each mounted with a vibration displacement sensor (509), and the four vibration displacement sensors (509) are each used for real-time absolute displacement and acceleration change of the vibration isolation platform (200).

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