A high-quality copper alloy rod internal defect nondestructive testing equipment

Abstract

The application discloses a kind of high-quality copper alloy rod internal defect nondestructive testing equipment, and the present application relates to metal detection equipment technical field, the detection equipment includes bottom, case, rotary mechanism, flaw detection mechanism and limiting mechanism, rotary mechanism includes drive motor, flaw detection mechanism includes slide rail platform, limiting mechanism includes base, case, drive motor, slide rail platform, base are all fixedly connected with bottom, rotary mechanism, flaw detection mechanism, limiting mechanism are all connected with case by electric signal;The present application is combined with air float and vacuum adsorption, realizes surface nondestructive clamping to high-quality copper alloy metal rod, reciprocating adjustment detector inclination, copper alloy rod is detected without dead angle by a variety of composite means such as electromagnetic infrared, avoid damaging copper bar while greatly improving copper bar detection accuracy.

Description

Technical Field

[0001] This invention relates to the field of metal testing equipment technology, specifically a non-destructive testing device for internal defects in high-quality copper alloy bars. Background Technology

[0002] There are many types of non-destructive testing (NDT) equipment for internal metal testing, each with its own characteristics and applicable scenarios. Ultrasonic testing, X-ray testing, eddy current testing, magnetic particle testing, and penetrant testing are the five major conventional techniques, forming the mainstay of testing. Emerging technologies such as phased array ultrasonic testing, digital X-ray imaging, and guided wave testing are continuously driving the development of this field. Selecting the appropriate equipment requires comprehensive consideration of factors such as the testing target, workpiece characteristics, cost, safety, and regulations. With the development of digitalization, automation, and intelligence, NDT equipment is becoming more efficient, accurate, and reliable, playing an increasingly crucial role in industrial safety and quality assurance.

[0003] For non-destructive testing of internal defects in high-strength, high-conductivity alloys such as beryllium bronze, chromium zirconium copper, and cupronickel, it is necessary to consider material characteristics such as non-ferromagnetism, high electrical conductivity, high thermal conductivity, possible coarse-grained structure, and stringent quality requirements. High-quality copper alloy rods, such as some components used in the aerospace field, require non-destructive clamping of their outer surface. The testing of copper rods requires multiple scans from multiple angles to improve data accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a non-destructive testing device for internal defects of high-quality copper alloy bars, so as to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a non-destructive testing device for internal defects of high-quality copper alloy bars includes a base, a housing, a rotating mechanism, a flaw detection mechanism, and a limiting mechanism. The rotating mechanism includes a drive motor, the flaw detection mechanism includes a slide rail platform, and the limiting mechanism includes a base. The housing, drive motor, slide rail platform, and base are all fixedly connected to the base. The rotating mechanism, flaw detection mechanism, and limiting mechanism are all connected to the housing via electrical signals.

[0006] This invention relates to an inspection device for the interior of high-quality copper alloy bars. The chassis sends an electrical control signal, and the two ends of the copper alloy bar are non-destructively clamped by a rotation mechanism and a limit mechanism. This non-destructive clamping avoids damage to the surface of the high-quality copper alloy bar. The flaw detection mechanism moves back and forth along the axis of the bar, and the probe of the flaw detection mechanism adjusts its tilt angle back and forth. The drive motor outputs a fixed-axis torque, causing the copper alloy bar to rotate around its axis. The copper alloy bar is scanned in all directions by a combination of electromagnetic and infrared methods, ensuring that the copper bar is inspected without blind spots, avoiding damage to the copper bar and significantly improving the accuracy of copper bar inspection.

[0007] Furthermore, the rotary mechanism also includes a main shaft, a three-jaw chuck, and air-bearing grippers. The drive motor is connected to the chassis via an electrical signal. The main shaft is fixedly connected to the output end of the drive motor and the three-jaw chuck. The air-bearing grippers include a conical shell. The three-jaw chuck is provided with a sliding groove. There are three sets of sliding grooves and air-bearing grippers. The three sets of sliding grooves and air-bearing grippers are evenly distributed along the circumference of the three-jaw chuck. The conical shell is slidably connected to the sliding groove.

[0008] Before the inspection, a high-quality copper alloy bar is placed on the central axis of the three-jaw chuck. Three sets of air-bearing jaws move along the slide groove towards the central axis of the three-jaw chuck. The air-bearing jaws form an air film at the point of contact with the high-quality copper alloy bar and simultaneously vacuum adsorb, achieving non-destructive clamping of the high-quality copper alloy bar. The drive motor outputs fixed-axis torque to the spindle. During flaw detection, the three-jaw chuck drives the copper alloy bar to rotate around its axis, ensuring that the copper bar is inspected without blind spots.

[0009] Furthermore, the air flotation gripper also includes an inner box. The conical shell is provided with an air inlet, an air outlet, air flotation holes, and adsorption holes. The inner box is fixedly connected to the conical shell. The air outlet and adsorption holes are arranged inside the inner box, while the air inlet and air flotation holes are arranged outside the inner box. Several groups of air flotation holes and adsorption holes are provided. The several groups of air flotation holes and adsorption holes are linearly and evenly distributed along the edge of the conical shell. The air flotation holes are located on the conical surface of the conical shell.

[0010] An external air pump introduces compressed air into the conical shell through the air inlet. The air passes through the outer side of the inner box and is discharged through several sets of air flotation holes that are linearly and evenly distributed along the conical surface of the conical shell. An air film is formed at the point of contact with the high-quality copper alloy rod. An external vacuum pump evacuates the inner side of the inner box through the adsorption hole and the air extraction port, and performs vacuum adsorption on the rod. The high-quality copper alloy rod is non-destructively clamped by air flotation combined with vacuum adsorption.

[0011] Furthermore, the flaw detection mechanism also includes a magnetic levitation slide and a scanning mechanism. The scanning mechanism includes a base frame, which is fixedly connected to the magnetic levitation slide. The magnetic levitation slide is slidably connected to the slide rail platform. Both the magnetic levitation slide and the scanning mechanism are connected to the chassis via electrical signals.

[0012] The chassis sends an electrical control signal, and the rotary mechanism and limit mechanism clamp the two ends of the copper alloy rod without damage. The magnetic levitation slide is located on the slide rail platform. The magnetic levitation slide moves back and forth along the axis of the rod. The scanning mechanism reciprocates to adjust the tilt angle of the probe, and performs all-round scanning and flaw detection on the copper rod without blind spots.

[0013] Furthermore, the scanning mechanism also includes a servo motor, a gear rod, and an arc-shaped shell. The servo motor is fixedly connected to the base frame, and the output end of the servo motor is fixedly connected to the gear rod. The base frame is provided with an arc-shaped rail and a side hole, and the arc-shaped shell is provided with an arc-shaped tooth pair. The gear rod is rotatably connected to the side hole, and the gear rod meshes with the tooth surface of the arc-shaped tooth pair. The arc-shaped shell is slidably connected to the arc-shaped rail.

[0014] Before the inspection operation, to avoid damage caused by the arc-shaped shell colliding with the copper alloy rod, the arc-shaped shell is retracted into the base frame. During the inspection operation, the servo motor outputs a fixed-axis torque to the gear rod, which rotates around its axis in the side hole. Through the meshing of the gear rod and the arc-shaped gear pair, the torque of the gear rod is transmitted to the arc-shaped shell, which slides in an arc along the arc track, causing the flaw detector to move to the inspection position.

[0015] Furthermore, the scanning mechanism also includes a torque motor, a hemisphere, and a flaw detector. The torque motor is fixedly connected to the arc-shaped shell, which is also provided with a hemispherical cavity and a transverse groove. The hemisphere contacts the hemispherical cavity, and the output end of the torque motor is fixedly connected to the hemisphere. The hemisphere is provided with a protruding post, which is slidably connected to the transverse groove. The flaw detector is fixedly connected to the protruding post. The servo motor, torque motor, and flaw detector are all connected to the chassis via electrical signals.

[0016] The torque motor outputs fixed-axis torque to the hemisphere according to the electrical control signal of the chassis. The hemisphere rotates in the hemispherical cavity, and the protrusion slides in the horizontal groove. The horizontal groove is horizontal with the ground. The hemisphere drives the flaw detector to reciprocate and adjust the tilt angle to perform all-round scanning flaw detection on the copper rod without dead angles.

[0017] Furthermore, the limiting mechanism also includes a slide, a first motor, a frame tube, and an outer tube. The base is provided with a cylindrical cavity, a horizontal rail, and an internal thread. The slide is slidably connected to the horizontal rail. The first motor is fixedly connected to the slide. The frame tube is fixedly connected to the output end of the first motor and the outer tube. The outer tube is provided with an external thread, and the internal thread and the external thread are connected by a thread.

[0018] The first motor outputs a fixed-axis torque to the frame cylinder according to the electrical control signal of the chassis. The frame cylinder is fixedly assembled with the outer cylinder. Through the threaded assembly between the external and internal threads on the outer cylinder, the outer cylinder moves spirally along the cylinder cavity under the drive of the first motor, and the slide moves along the horizontal rail, so that the limiting mechanism fits against the end face of the copper alloy rod to complete the adsorption.

[0019] Furthermore, the limiting mechanism also includes a laser rangefinder and an inner cylinder. The inner cylinder is rotatably connected to the outer cylinder. The inner cylinder is provided with an air extraction channel and an oblique flow channel. The laser rangefinder is fixedly connected to the outer cylinder. The air extraction channel is connected to the oblique flow channel. Several sets of oblique flow channels are provided. The several sets of oblique flow channels are evenly distributed along the circumference of the inner cylinder away from the end face of the first motor. The first motor and the laser rangefinder are both connected to the chassis via electrical signals.

[0020] The first motor continuously outputs torque, and the outer cylinder moves towards the end face of the copper alloy rod. When the inner cylinder contacts the end face of the rod, the laser rangefinder identifies the copper alloy rod and sends an electrical signal to the chassis, controlling the first motor to stop outputting torque. The external air pump draws a vacuum through the air extraction channel and the inclined flow channel, causing the inner cylinder to vacuum-adhere to the end face of the rod, driving the motor to rotate the rod, and the inner cylinder rotates inside the outer cylinder.

[0021] Compared with the prior art, the beneficial effects of this invention are as follows: This invention designs an air-floating gripper. Compressed air is introduced into the conical shell through an external air pump via the air inlet. The air passes through the outer side of the inner box and is discharged through several sets of air-floating holes linearly and evenly distributed along the conical surface of the conical shell, forming an air film at the contact point with the high-quality copper alloy rod. An external vacuum pump evacuates the inner side of the inner box through the adsorption hole and the air extraction port, performing vacuum adsorption on the rod. The high-quality copper alloy rod is non-destructively clamped through air flotation combined with vacuum adsorption. This invention also designs an adsorption mechanism. A first motor continuously outputs torque, causing the outer cylinder to move towards the end face of the copper alloy rod. When the inner cylinder contacts the end face of the rod, a laser rangefinder identifies the copper alloy rod and sends an electrical signal to the chassis, controlling the first motor to stop outputting torque. The external air pump evacuates through the air extraction channel and the oblique flow channel, causing the inner cylinder to vacuum adsorb the end face of the rod. The drive motor moves the inner cylinder within the outer cylinder via the rod. This invention achieves self-positioning and non-destructive clamping of the copper alloy rod, avoiding surface damage to high-quality copper alloy rods caused by conventional clamping. A flaw detection mechanism is designed, where a servo motor outputs a fixed-axis torque to a gear rod, which transmits the torque to an arc-shaped shell. The arc-shaped shell slides along an arc track, displacing the flaw detector to the detection position. A torque motor outputs a fixed-axis torque to a hemisphere, which rotates within its cavity. A protruding post slides within a horizontal groove, which is horizontal to the ground. The hemisphere drives the flaw detector to reciprocate and adjust its tilt angle, performing a comprehensive scan of the copper alloy rod using electromagnetic and infrared technologies, ensuring no blind spots in the detection. This invention combines air flotation and vacuum adsorption to achieve non-destructive clamping of high-quality copper alloy metal rods. The reciprocating adjustment of the detector's tilt angle allows for comprehensive detection using electromagnetic and infrared technologies, avoiding damage to the copper rod while significantly improving the accuracy of copper rod detection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the rotary mechanism structure of the present invention;

[0024] Figure 3 This is a partial cross-sectional view of the air-floating gripper of the present invention;

[0025] Figure 4 This is an isometric schematic diagram of the air-floating gripper of the present invention;

[0026] Figure 5 This is a schematic diagram of the flaw detection mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the scanning mechanism structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the limiting mechanism structure of the present invention;

[0029] Figure 8 This is a partial cross-sectional view of the limiting mechanism of the present invention.

[0030] In the diagram: 1. Base platform; 2. Chassis; 3. Rotary mechanism; 31. Drive motor; 32. Spindle; 33. Three-jaw chuck; 331. Slide groove; 34. Air-bearing gripper; 341. Conical shell; 342. Air inlet; 343. Air outlet; 3431. Air flotation hole; 3432. Adsorption hole; 3433. Inner box; 4. Flaw detection mechanism; 41. Slide rail platform; 42. Magnetic levitation slide table; 43. Scanning mechanism; 431. Base frame; 4311. Arc rail; 4312. Side hole; 432. Servo motor; 43 3. Gear rod; 434. Arc-shaped shell; 4341. Arc gear pair; 4342. Hemispherical cavity; 4343. Horizontal groove; 435. Torque motor; 436. Hemisphere; 4361. Protruding column; 437. Flaw detector; 5. Limiting mechanism; 51. Base; 511. Cylindrical cavity; 512. Horizontal rail; 513. Internal thread; 52. Slide carriage; 53. First motor; 54. Frame cylinder; 55. Laser rangefinder; 56. Outer cylinder; 561. External thread; 57. Inner cylinder; 571. Air extraction channel; 572. Inclined flow channel. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 As shown, the present invention provides a technical solution for a non-destructive testing device for internal defects of high-quality copper alloy bars, comprising a base platform 1, a housing 2, a rotary mechanism 3, a flaw detection mechanism 4, and a limiting mechanism 5. The rotary mechanism 3 includes a drive motor 31, the flaw detection mechanism 4 includes a slide rail platform 41, and the limiting mechanism 5 includes a base 51. The housing 2, drive motor 31, slide rail platform 41, and base 51 are all fixedly connected to the base platform 1, and the rotary mechanism 3, flaw detection mechanism 4, and limiting mechanism 5 are all electrically connected to the housing 2.

[0033] This invention is a testing device for the interior of high-quality copper alloy rods. The chassis 2 sends an electrical control signal, and the two ends of the copper alloy rod are non-destructively clamped by the rotary mechanism 3 and the limiting mechanism 5. Non-destructive clamping avoids damage to the surface of the high-quality copper alloy rod. The flaw detection mechanism 4 moves back and forth along the axis of the rod. The probe of the flaw detection mechanism 4 adjusts the tilt angle back and forth. The drive motor 31 outputs a fixed-axis torque, which drives the copper alloy rod to rotate around its axis. The copper alloy rod is scanned in all directions by a combination of electromagnetic and infrared methods to ensure that the copper rod is detected without blind spots, avoid damage to the copper rod and greatly improve the accuracy of copper rod detection.

[0034] like Figure 2 As shown, the rotary mechanism 3 also includes a main shaft 32, a three-jaw chuck 33, and an air-bearing gripper 34. The drive motor 31 is connected to the housing 2 via an electrical signal. The main shaft 32 is fixedly connected to the output end of the drive motor 31 and the three-jaw chuck 33. The air-bearing gripper 34 includes a conical shell 341. The three-jaw chuck 33 is provided with a sliding groove 331. There are three sets of sliding grooves 331 and air-bearing grippers 34. The three sets of sliding grooves 331 and air-bearing grippers 34 are evenly distributed along the circumference of the three-jaw chuck 33. The conical shell 341 is slidably connected to the sliding groove 331.

[0035] Before the inspection, a high-quality copper alloy rod is placed on the central axis of the three-jaw chuck 33. Three sets of air-floating jaws 34 move along the slide groove 331 toward the central axis of the three-jaw chuck 33. The air-floating jaws 34 form an air film at the point of contact with the high-quality copper alloy rod and simultaneously vacuum adsorb, achieving non-destructive clamping of the high-quality copper alloy rod. The fixed-axis torque is output to the spindle 32 through the drive motor 31. During the flaw detection, the three-jaw chuck 33 drives the copper alloy rod to rotate around its axis, ensuring that the copper rod is inspected without blind spots.

[0036] like Figure 3 , Figure 4 As shown, the air flotation gripper 34 also includes an inner box 3433. The conical shell 341 is provided with an air inlet 342, an air outlet 343, an air flotation hole 3431, and an adsorption hole 3432. The inner box 3433 is fixedly connected to the conical shell 341. The air outlet 343 and the adsorption hole 3432 are both arranged inside the inner box 3433, and the air inlet 342 and the air flotation hole 3431 are both arranged outside the inner box 3433. Several groups of air flotation holes 3431 and adsorption holes 3432 are provided. Several groups of air flotation holes 3431 and adsorption holes 3432 are linearly and evenly distributed along the edge of the conical shell 341. The air flotation hole 3431 is provided on the conical surface of the conical shell 341.

[0037] An external air pump introduces compressed air into the conical shell 341 through the air inlet 342. The air passes through the outer side of the inner box 3433 and is discharged through several sets of air flotation holes 3431 that are linearly and evenly distributed along the conical surface of the conical shell 341. An air film is formed at the point of contact with the high-quality copper alloy rod. An external vacuum pump evacuates the inner side of the inner box 3433 through the adsorption hole 3432 and the air extraction port 343, and performs vacuum adsorption on the rod. The high-quality copper alloy rod is non-destructively clamped by air flotation combined with vacuum adsorption.

[0038] like Figure 5 As shown, the flaw detection mechanism 4 also includes a magnetic levitation slide 42 and a scanning mechanism 43. The scanning mechanism 43 includes a base frame 431, which is fixedly connected to the magnetic levitation slide 42. The magnetic levitation slide 42 is slidably connected to the slide rail platform 41. The magnetic levitation slide 42 and the scanning mechanism 43 are both connected to the chassis 2 via electrical signals.

[0039] The chassis 2 sends an electrical control signal, and the rotary mechanism 3 and the limit mechanism 5 clamp the two ends of the copper alloy rod without damage. The magnetic levitation slide 42 is located on the slide rail platform 41. The magnetic levitation slide 42 moves back and forth along the axis of the rod. The scanning mechanism 43 reciprocates to adjust the tilt angle of the probe, and performs all-round scanning and flaw detection on the copper rod without dead angles.

[0040] like Figure 6 As shown, the scanning mechanism 43 also includes a servo motor 432, a gear rod 433, and an arc-shaped shell 434. The servo motor 432 is fixedly connected to the base frame 431, and the output end of the servo motor 432 is fixedly connected to the gear rod 433. The base frame 431 is provided with an arc rail 4311 and a side hole 4312. The arc-shaped shell 434 is provided with an arc tooth pair 4341. The gear rod 433 is rotatably connected to the side hole 4312, and the gear rod 433 meshes with the tooth surface of the arc tooth pair 4341. The arc-shaped shell 434 is slidably connected to the arc rail 4311.

[0041] Before the inspection operation, in order to avoid the arc-shaped shell 434 colliding with the copper alloy rod and causing damage, the arc-shaped shell 434 is retracted into the base frame 431. During the inspection operation, the servo motor 432 outputs a fixed-axis torque to the gear rod 433. The gear rod 433 rotates around its axis in the side hole 4312. Through the meshing of the tooth surfaces between the gear rod 433 and the arc tooth pair 4341, the torque of the gear rod 433 is transmitted to the arc-shaped shell 434. The arc-shaped shell 434 slides in an arc shape along the arc track 4311, so that the flaw detector 437 is moved to the inspection position.

[0042] like Figure 6 As shown, the scanning mechanism 43 also includes a torque motor 435, a hemisphere 436, and a flaw detector 437. The torque motor 435 is fixedly connected to the arc-shaped shell 434. The arc-shaped shell 434 is also provided with a hemispherical cavity 4342 and a transverse groove 4343. The hemisphere 436 is in contact with the hemispherical cavity 4342. The output end of the torque motor 435 is fixedly connected to the hemisphere 436. The hemisphere 436 is provided with a protrusion 4361. The protrusion 4361 is slidably connected to the transverse groove 4343. The flaw detector 437 is fixedly connected to the protrusion 4361. The servo motor 432, the torque motor 435, and the flaw detector 437 are all connected to the chassis 2 via electrical signals.

[0043] The torque motor 435 outputs fixed-axis torque to the hemisphere 436 according to the electrical control signal of the chassis 2. The hemisphere 436 rotates in the hemisphere cavity 4342, and the protrusion 4361 slides in the transverse groove 4343. The transverse groove 4343 is horizontal with the ground. The hemisphere 436 drives the flaw detector 437 to reciprocate and adjust the tilt angle to perform all-round scanning flaw detection on the copper rod without dead angles.

[0044] like Figure 7As shown, the limiting mechanism 5 also includes a slide 52, a first motor 53, a frame tube 54 and an outer tube 56. The base 51 is provided with a cylindrical cavity 511, a horizontal rail 512 and an internal thread 513. The slide 52 is slidably connected to the horizontal rail 512. The first motor 53 is fixedly connected to the slide 52. The frame tube 54 is fixedly connected to the output end of the first motor 53 and the outer tube 56. The outer tube 56 is provided with an external thread 561. The internal thread 513 and the external thread 561 are connected by threads.

[0045] The first motor 53 outputs a fixed-axis torque to the frame cylinder 54 according to the electrical control signal of the chassis 2. The frame cylinder 54 is fixedly assembled with the outer cylinder 56. Through the threaded assembly between the external thread 561 and the internal thread 513 on the outer cylinder 56, the outer cylinder 56 is spirally displaced along the cylinder cavity 511 under the drive of the first motor 53, and the slide 52 is displaced along the horizontal rail 512, so that the limiting mechanism 5 is in contact with the end face of the copper alloy rod to complete the adsorption.

[0046] like Figure 8 As shown, the limiting mechanism 5 also includes a laser rangefinder 55 and an inner cylinder 57. The inner cylinder 57 is rotatably connected to the outer cylinder 56. The inner cylinder 57 is provided with an air extraction channel 571 and an oblique flow channel 572. The laser rangefinder 55 is fixedly connected to the outer cylinder 56. The air extraction channel 571 is connected to the oblique flow channel 572. The oblique flow channel 572 is provided with several groups. The several groups of oblique flow channels 572 are evenly distributed around the circumference of the inner cylinder 57 away from the end face of the first motor 53. The first motor 53 and the laser rangefinder 55 are both connected to the chassis 2 by electrical signals.

[0047] The first motor 53 continuously outputs torque, and the outer cylinder 56 moves towards the end face of the copper alloy rod. When the inner cylinder 57 contacts the end face of the rod, the laser rangefinder 55 identifies the copper alloy rod and sends an electrical signal to the chassis 2, controlling the first motor 53 to stop outputting torque. The external air pump draws a vacuum through the air extraction channel 571 and the inclined flow channel 572, causing the inner cylinder 57 to vacuum-adhere to the end face of the rod, and the drive motor 31 drives the rod to rotate. The inner cylinder 57 rotates inside the outer cylinder 56.

[0048] The working principle of this invention is as follows: Before the inspection operation, a high-quality copper alloy rod is placed on the central axis of the three-jaw chuck 33. Three sets of air-floating jaws 34 move along the slide groove 331 towards the central axis of the three-jaw chuck 33. An external air pump introduces compressed air into the conical shell 341 through the air inlet 342. The air passes through the outer side of the inner box 3433 and is discharged through several sets of air-floating holes 3431 that are linearly and evenly distributed along the conical surface of the conical shell 341, forming an air film at the point of contact with the high-quality copper alloy rod. An external vacuum pump evacuates the inner side of the inner box 3433 through the suction hole 3432 and the air extraction port 343, performing vacuum adsorption on the rod. The high-quality copper alloy rod is non-destructively clamped by air flotation combined with vacuum adsorption. The first motor 53 continuously outputs torque, and the outer cylinder 56 moves towards the end face of the copper alloy rod. When the inner cylinder 57 contacts the end face of the rod, the laser rangefinder 55 identifies the copper alloy rod and sends an electrical signal to the chassis 2, controlling the first motor 53 to stop outputting torque. The external air pump then evacuates the inner side of the inner box 3433 through the air extraction port 343, forming an air film at the point of contact with the high-quality copper alloy rod. An external air pump then evacuates the inner side of the inner box 3433 through the suction hole 3432 and the air extraction port 343. Vacuuming is performed in air passage 571 and inclined flow passage 572, causing the inner cylinder 57 to vacuum-adhere the end face of the rod. The drive motor 31 outputs a fixed-axis torque to the main shaft 32. During flaw detection, the three-jaw chuck 33 drives the copper alloy rod to rotate around its axis. The inner cylinder 57 rotates within the outer cylinder 56. The magnetic levitation slide 42 reciprocates along the rod's axis. The servo motor 432 outputs a fixed-axis torque to the gear rod 433. The gear rod 433 rotates around its axis within the side hole 4312. The gear rod 433 interacts with... The meshing of the tooth surfaces between the arc-shaped gear pair 4341 transmits the torque of the gear rod 433 to the arc-shaped shell 434. The arc-shaped shell 434 slides in an arc shape along the arc track 4311, causing the flaw detector 437 to be displaced to the inspection station. The hemisphere 436 rotates in the hemispherical cavity 4342, and the protrusion 4361 slides in the transverse groove 4343. The transverse groove 4343 is horizontal with the ground. The hemisphere 436 drives the flaw detector 437 to reciprocate and adjust the tilt angle, so as to perform all-round scanning flaw detection on the copper rod without dead angles.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A non-destructive testing device for internal defects in high-quality copper alloy bars, characterized in that: The testing equipment includes a base (1), a housing (2), a rotating mechanism (3), a flaw detection mechanism (4), and a limiting mechanism (5). The rotating mechanism (3) includes a drive motor (31), the flaw detection mechanism (4) includes a slide rail platform (41), and the limiting mechanism (5) includes a base (51). The housing (2), drive motor (31), slide rail platform (41), and base (51) are all fixedly connected to the base (1). The rotating mechanism (3), flaw detection mechanism (4), and limiting mechanism (5) are all connected to the housing (2) via electrical signals. The rotary mechanism (3) also includes a main shaft (32), a three-jaw chuck (33) and an air-bearing gripper (34). The drive motor (31) is connected to the housing (2) via an electrical signal. The main shaft (32) is fixedly connected to the output end of the drive motor (31) and the three-jaw chuck (33). The air-bearing gripper (34) includes a conical shell (341). The three-jaw chuck (33) is provided with a sliding groove (331). The sliding groove (331) and the air-bearing gripper (34) are provided in three sets. The three sets of sliding grooves (331) and air-bearing grippers (34) are evenly distributed along the circumference of the three-jaw chuck (33). The conical shell (341) is slidably connected to the sliding groove (331). The air flotation gripper (34) also includes an inner box (3433). The conical shell (341) is provided with an air inlet (342), an air extraction port (343), an air flotation hole (3431), and an adsorption hole (3432). The inner box (3433) is fixedly connected to the conical shell (341). The air extraction port (343) and the adsorption hole (3432) are arranged inside the inner box (3433). The air inlet (342) and the air flotation hole (3431) are arranged outside the inner box (3433). The air flotation hole (3431) and the adsorption hole (3432) are provided in several groups. The several groups of air flotation holes (3431) and adsorption holes (3432) are linearly and evenly distributed along the edge of the conical shell (341). The air flotation hole (3431) is located on the conical surface of the conical shell (341). An external air pump introduces compressed air into the conical shell (341) through the air inlet (342). The air passes through the outer side of the inner box (3433) and is discharged through several sets of air flotation holes (3431) that are linearly and evenly distributed along the conical surface of the conical shell (341). An air film is formed at the point of contact with the high-quality copper alloy rod. An external vacuum pump evacuates the inner side of the inner box (3433) through the adsorption hole (3432) and the air extraction port (343) to perform vacuum adsorption on the rod. The high-quality copper alloy rod is non-destructively clamped by air flotation combined with vacuum adsorption.

2. The non-destructive testing equipment for internal defects of high-quality copper alloy bars according to claim 1, characterized in that: The flaw detection mechanism (4) also includes a magnetic levitation slide (42) and a scanning mechanism (43). The scanning mechanism (43) includes a base frame (431), which is fixedly connected to the magnetic levitation slide (42). The magnetic levitation slide (42) is slidably connected to the slide rail platform (41). The magnetic levitation slide (42) and the scanning mechanism (43) are both connected to the chassis (2) via electrical signals.

3. The non-destructive testing equipment for internal defects of high-quality copper alloy bars according to claim 2, characterized in that: The scanning mechanism (43) further includes a servo motor (432), a gear rod (433), and an arc-shaped shell (434). The servo motor (432) is fixedly connected to the base frame (431), and the output end of the servo motor (432) is fixedly connected to the gear rod (433). The base frame (431) is provided with an arc rail (4311) and a side hole (4312). The arc-shaped shell (434) is provided with an arc tooth pair (4341). The gear rod (433) is rotatably connected to the side hole (4312). The gear rod (433) meshes with the tooth surface of the arc tooth pair (4341). The arc-shaped shell (434) is slidably connected to the arc rail (4311).

4. The non-destructive testing equipment for internal defects of high-quality copper alloy bars according to claim 3, characterized in that: The scanning mechanism (43) also includes a torque motor (435), a hemisphere (436), and a flaw detector (437). The torque motor (435) is fixedly connected to the arc-shaped shell (434). The arc-shaped shell (434) is also provided with a hemispherical cavity (4342) and a transverse groove (4343). The hemisphere (436) is in contact with the hemispherical cavity (4342). The output end of the torque motor (435) is fixedly connected to the hemisphere (436). The hemisphere (436) is provided with a protrusion (4361). The protrusion (4361) is slidably connected to the transverse groove (4343). The flaw detector (437) is fixedly connected to the protrusion (4361). The servo motor (432), the torque motor (435), and the flaw detector (437) are all connected to the chassis (2) via electrical signals.

5. The non-destructive testing equipment for internal defects of high-quality copper alloy bars according to claim 1, characterized in that: The limiting mechanism (5) further includes a slide (52), a first motor (53), a frame (54) and an outer cylinder (56). The base (51) is provided with a cylindrical cavity (511), a horizontal rail (512) and an internal thread (513). The slide (52) is slidably connected to the horizontal rail (512). The first motor (53) is fixedly connected to the slide (52). The frame (54) is fixedly connected to the output end of the first motor (53) and the outer cylinder (56). The outer cylinder (56) is provided with an external thread (561). The internal thread (513) and the external thread (561) are connected by a thread.

6. The non-destructive testing equipment for internal defects of high-quality copper alloy bars according to claim 5, characterized in that: The limiting mechanism (5) also includes a laser rangefinder (55) and an inner cylinder (57). The inner cylinder (57) is rotatably connected to the outer cylinder (56). The inner cylinder (57) is provided with an air extraction channel (571) and an oblique flow channel (572). The laser rangefinder (55) is fixedly connected to the outer cylinder (56). The air extraction channel (571) is connected to the oblique flow channel (572). The oblique flow channel (572) is provided with several groups. The several groups of oblique flow channels (572) are evenly distributed around the circumference of the inner cylinder (57) away from the end face of the first motor (53). The first motor (53) and the laser rangefinder (55) are both connected to the chassis (2) by electrical signals.

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