Nondestructive testing equipment for internal defects of high-quality copper alloy bar

Abstract

The invention discloses nondestructive testing equipment for internal defects of a high-quality copper alloy bar, and relates to the technical field of metal testing equipment.The testing equipment comprises a bottom table, a case, a rotating mechanism, a flaw detection mechanism and a limiting mechanism, the rotating mechanism comprises a driving motor, the flaw detection mechanism comprises a sliding rail platform, and the limiting mechanism comprises a base; the case, the driving motor, the sliding rail platform and the base are all fixedly connected with the bottom table, and the swing mechanism, the flaw detection mechanism and the limiting mechanism are all connected with the case through electric signals; according to the invention, air floatation and vacuum adsorption are combined, surface lossless clamping of a high-quality copper alloy metal bar is realized, the inclination angle of a detector is adjusted in a reciprocating manner, and no-dead-angle detection is carried out on the copper alloy bar by a plurality of composite means such as electromagnetic infrared, so that the copper bar is prevented from being damaged, and the detection accuracy of the copper bar is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal detection equipment, in particular to non-destructive detection equipment for internal defects of high-quality copper alloy bars. Background Art

[0002] There are numerous types of non-destructive testing equipment for internal metal parts, each with its own unique characteristics and applicable scenarios. Ultrasonic, X-ray, eddy current, magnetic particle, and penetrant testing are the five most common technologies, constituting the mainstay of testing. Emerging technologies such as phased array ultrasound, digital radiography, and guided waves continue to drive development in this field. Selecting the appropriate equipment requires comprehensive consideration of multiple factors, including the test objectives, workpiece characteristics, cost, safety, and regulations. With the advancement of digitalization, automation, and intelligent technology, non-destructive testing equipment is becoming more efficient, accurate, and reliable, playing an increasingly critical role in industrial safety and quality assurance.

[0003] For non-destructive testing of internal defects in high-strength and high-conductivity alloys such as beryllium bronze, chromium-zirconium copper, and white copper, it is necessary to take into account material properties such as non-ferromagnetism, high 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 surfaces. The inspection of copper rods requires multiple scanning inspections from multiple angles to improve data accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a nondestructive detection device for internal defects of high-quality copper alloy bars to solve the problems in the prior art.

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

[0006] The present invention is a detection device for the inside of high-quality copper alloy bars. The chassis sends an electric control signal, and the two ends of the copper alloy bar are non-destructively clamped by a rotary mechanism and a limit mechanism. The non-destructive clamping prevents 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 reciprocates to adjust the tilt angle. The driving motor outputs a fixed-axis torque to drive the copper alloy bar to rotate around its axis. The copper alloy bar is scanned in all directions by multiple composite means such as electromagnetic infrared, ensuring that the copper bar is detected without dead angles, avoiding damage to the copper bar, and greatly improving the accuracy of copper bar detection.

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

[0008] Before the inspection, the high-quality copper alloy bar is placed on the central axis of the three-jaw chuck. The three sets of air-floating jaws move along the slide toward the central axis of the three-jaw chuck. The air-floating jaws form an air film at the point of contact with the high-quality copper alloy bar and vacuum adsorption is performed simultaneously to achieve non-destructive clamping of the high-quality copper alloy bar. The fixed-axis torque is output to the main shaft by the driving motor. During the flaw detection, the three-jaw chuck drives the copper alloy bar to rotate around its axis to ensure that the copper bar is inspected without blind spots.

[0009] Furthermore, the flotation clamp also includes an inner box, and the conical shell is provided with an air inlet, an air exhaust port, an air flotation hole and an adsorption hole. The inner box is fixedly connected to the conical shell, the air exhaust port and the adsorption hole are arranged on the inner side of the inner box, and the air inlet and the air flotation hole are arranged on the outer side of the inner box. There are several groups of air flotation holes and adsorption holes, and several groups of air flotation holes and adsorption holes are linearly evenly distributed along the edge of the conical shell, and the air flotation holes are arranged 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 outside of the inner box and is discharged from several groups of flotation holes linearly distributed along the conical surface of the conical shell, forming an air film at the point where it contacts the high-quality copper alloy rod. The external vacuum pump vacuums the inside of the inner box through the adsorption holes and the exhaust port, and vacuum adsorbs the rod. The high-quality copper alloy rod is clamped non-destructively through the combination of air flotation and 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, and the magnetic levitation slide is slidably connected to the slide rail platform. The magnetic levitation slide and the scanning mechanism are both connected to the chassis through electrical signals.

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

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

[0014] Before the inspection operation, in order to avoid the arc shell colliding with the copper alloy bar and causing damage, the arc shell is retracted into the base frame. During the inspection operation, the servo motor outputs a fixed-axis torque to the gear rod, and the gear rod rotates around its axis in the side hole. The gear rod torque is transmitted to the arc shell through the engagement of the tooth surface between the gear rod and the arc tooth pair. The arc shell slides in an arc shape along the arc track, causing the flaw detector to move to the inspection station.

[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 shell. The arc shell is also provided with a hemispherical cavity and a transverse groove. The hemisphere is in contact with the hemispherical cavity. The output end of the torque motor is fixedly connected to the hemisphere. The hemisphere is provided with a convex column. The convex column is slidably connected to the transverse groove. The flaw detector is fixedly connected to the convex column. The servo motor, torque motor and flaw detector are all connected to the chassis through electrical signals.

[0016] The torque motor outputs fixed-axis torque to the hemisphere according to the electronic control signal of the chassis. The hemisphere rotates in the hemisphere cavity, and the convex column slides in the transverse groove. The transverse groove is horizontal to the ground. The hemisphere drives the flaw detector to reciprocate and adjust the tilt angle, performing all-round scanning and flaw detection on the copper bar without blind spots.

[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 tube cavity, a cross rail and an internal thread. The slide is slidably connected to the cross 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 threads.

[0018] The first motor outputs a fixed-axis torque to the frame cylinder according to the electronic control signal of the chassis. The frame cylinder is fixedly assembled with the outer cylinder. Through the threaded assembly between the external thread and the internal thread on the outer cylinder, the outer cylinder is spirally displaced along the cylinder cavity under the drive of the first motor, and the slide is displaced along the horizontal rail, so that the limiting mechanism fits 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, an air extraction channel and an inclined flow channel are provided on the inner cylinder, the laser rangefinder is fixedly connected to the outer cylinder, the air extraction channel is communicated with the inclined flow channel, and the inclined flow channels are provided in several groups, and the several groups of inclined flow channels are evenly distributed along the circumference of the inner cylinder away from the end face of the first motor, and the first motor and the laser rangefinder are connected to the chassis through electrical signals.

[0020] The first motor continuously outputs torque, and the outer cylinder moves toward 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 to control the first motor to stop outputting torque. The external air pump draws vacuum through the exhaust channel and the inclined flow channel, so that the inner cylinder vacuum absorbs the end face of the rod. The driving motor drives the rod to rotate, and the inner cylinder rotates inside the outer cylinder.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs an air-floating clamp, which introduces compressed air into the interior of the conical shell through an external air pump from the air inlet, and the air is discharged through the outside of the inner box through several groups of air-floating holes linearly evenly distributed along the conical surface of the conical shell, forming an air film at the place where it contacts the high-quality copper alloy rod. The external vacuum pump vacuums the inside of the inner box through the adsorption hole and the air exhaust port, and vacuum adsorbs the rod, and non-destructively clamps the high-quality copper alloy rod through air flotation and vacuum adsorption; the present invention designs an adsorption mechanism, which continuously outputs torque through the first motor, and the outer cylinder moves toward 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, and the external air pump vacuums through the air exhaust channel and the inclined flow channel, so that the inner cylinder vacuum adsorbs the end face of the rod, and the driving motor drives the inner cylinder to automatically move in the outer cylinder through the rod. The servo motor outputs a fixed-axis torque to the gear rod, which transmits the torque to the arc shell. The arc shell slides in an arc shape along the arc track, so that the flaw detector is moved to the detection position. The torque motor outputs a fixed-axis torque to the hemisphere. The hemisphere rotates in the hemisphere cavity, and the convex column slides in the transverse groove. The transverse groove is level with the ground. The hemisphere drives the flaw detector to reciprocately adjust the tilt angle, and perform all-round scanning of the copper alloy bar by electromagnetic infrared and other composite means to ensure that the copper bar is detected without dead angles. The present invention combines air flotation and vacuum adsorption to achieve surface non-destructive clamping of high-quality copper alloy metal bars, reciprocately adjust the tilt angle of the detector, and perform dead angle detection of the copper alloy bar by electromagnetic infrared and other composite means, avoiding damage to the copper bar while greatly improving the accuracy of copper bar detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the rotary mechanism of the present invention; Figure 3 A partial cross-sectional view of the air-floating gripper of the present invention; Figure 4 is an isometric diagram of the air-floating gripper of the present invention; Figure 5 It is a structural schematic diagram of the flaw detection mechanism of the present invention; Figure 6 It is a schematic structural diagram of the scanning mechanism of the present invention; Figure 7 Schematic diagram of the limiting mechanism structure of the present invention; Figure 8 It is a partial cross-sectional view of the limiting mechanism of the present invention.

[0023] In the figure: 1. Base; 2. Chassis; 3. Rotating mechanism; 31. Drive motor; 32. Spindle; 33. Three-jaw chuck; 331. Slideway; 34. Air-floating jaws; 341. Conical shell; 342. Air inlet; 343. Air extraction port; 3431. Air-floating hole; 3432. Adsorption hole; 3433. Inner box; 4. Flaw detection mechanism; 41. Slide platform; 42. Magnetic suspension slide; 43. Scanning mechanism; 431. Base; 4311. Arc rail; 4312. Side hole; 432. Servo motor; 43 3. Gear rod; 434. Arc shell; 4341. Arc gear pair; 4342. Hemispherical cavity; 4343. Horizontal groove; 435. Torque motor; 436. Hemispherical body; 4361. Boss; 437. Flaw detector; 5. Limiting mechanism; 51. Base; 511. Cylinder cavity; 512. Horizontal rail; 513. Internal thread; 52. Slide; 53. First motor; 54. Frame tube; 55. Laser rangefinder; 56. Outer tube; 561. External thread; 57. Inner tube; 571. Exhaust duct; 572. Oblique flow channel. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 As shown, the present invention provides a technical solution of a nondestructive detection device for internal defects of high-quality copper alloy bars, including a base 1, a chassis 2, a rotating mechanism 3, a flaw detection mechanism 4 and a limiting mechanism 5. The rotating mechanism 3 includes a driving motor 31, the flaw detection mechanism 4 includes a slide rail platform 41, and the limiting mechanism 5 includes a base 51. The chassis 2, the driving motor 31, the slide rail platform 41, and the base 51 are all fixedly connected to the base 1, and the rotating mechanism 3, the flaw detection mechanism 4, and the limiting mechanism 5 are all connected to the chassis 2 through electrical signals.

[0026] The present invention is a detection device for the inside of high-quality copper alloy bars. The chassis 2 sends an electric control signal, and the two ends of the copper alloy bar are non-destructively clamped through the rotating mechanism 3 and the limiting mechanism 5. The non-destructive clamping prevents damage to the surface of the high-quality copper alloy bar. The flaw detection mechanism 4 moves back and forth along the axis of the bar. The probe of the flaw detection mechanism 4 adjusts the tilt angle back and forth. The driving motor 31 outputs a fixed-axis torque to drive the copper alloy bar to rotate around its axis. The copper alloy bar is scanned in all directions by various composite means such as electromagnetic infrared to ensure that the copper bar is detected without dead angles, avoid damage to the copper bar, and greatly improve the accuracy of copper bar detection.

[0027] like Figure 2As shown, the rotary mechanism 3 also includes a main shaft 32, a three-jaw chuck 33 and an air-floating jaw 34. The drive motor 31 is connected to the chassis 2 through 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-floating jaw 34 includes a conical shell 341. A slide groove 331 is provided on the three-jaw chuck 33. There are three groups of slide grooves 331 and air-floating jaws 34. The three groups of slide grooves 331 and air-floating jaws 34 are evenly distributed along the circumference of the three-jaw chuck 33. The conical shell 341 is slidably connected to the slide groove 331.

[0028] Before the inspection operation, the high-quality copper alloy rod is placed on the central axis of the three-jaw chuck 33, and the three groups of air-floating jaws 34 are displaced 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 contact point of the high-quality copper alloy rod and vacuum adsorb at the same time to achieve non-destructive clamping of the high-quality copper alloy rod. The fixed-axis torque is output to the main shaft 32 by the driving motor 31. During the flaw detection, the three-jaw chuck 33 drives the copper alloy rod to rotate around its axis to ensure that the copper rod is inspected without blind spots.

[0029] like Figure 3 、 Figure 4 As shown, the air-floating clamp 34 also includes an inner box 3433, and 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, and the air extraction port 343 and the adsorption hole 3432 are both arranged on the inner side of the inner box 3433, and the air inlet 342 and the air flotation hole 3431 are both arranged on the outer side of the inner box 3433. The air flotation holes 3431 and the adsorption holes 3432 are each provided in several groups, and the several groups of air flotation holes 3431 and the adsorption holes 3432 are all linearly evenly distributed along the edge of the conical shell 341, and the air flotation holes 3431 are arranged on the conical surface of the conical shell 341.

[0030] An external air pump introduces compressed air into the conical shell 341 through the air inlet 342. The air passes through the outside of the inner box 3433 and is discharged from several groups of flotation holes 3431 linearly distributed along the conical surface of the conical shell 341, forming an air film at the point where it contacts the high-quality copper alloy rod. The external vacuum pump vacuums the inside of the inner box 3433 through the adsorption holes 3432 and the air exhaust port 343, and vacuum adsorbs the rod. The high-quality copper alloy rod is clamped non-destructively through the combination of air flotation and vacuum adsorption.

[0031] 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. The base frame 431 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 through electrical signals.

[0032] The chassis 2 sends an electrical control signal, the rotary mechanism 3 and the limit mechanism 5 non-destructively clamp the two ends of the copper alloy bar, 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 bar, and the scanning mechanism 43 reciprocates to adjust the tilt angle of the probe to perform all-round scanning and flaw detection on the copper bar without blind spots.

[0033] like Figure 6 As shown, the scanning mechanism 43 also includes a servo motor 432, a gear rod 433 and an arc 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 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 is engaged with the tooth surface of the arc tooth pair 4341, and the arc shell 434 is slidably connected to the arc rail 4311.

[0034] Before the inspection operation, in order to prevent the arc shell 434 from colliding with the copper alloy rod and causing damage, the arc shell 434 is retracted into the base frame 431. When the inspection operation is carried out, 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. The gear rod 433 is engaged with the tooth surface between the arc tooth pair 4341, and the torque of the gear rod 433 is transmitted to the arc shell 434. The arc shell 434 slides in an arc shape along the arc rail 4311, so that the flaw detector 437 is moved to the inspection station.

[0035] 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 shell 434. The arc 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 boss 4361. The boss 4361 is slidably connected to the transverse groove 4343. The flaw detector 437 is fixedly connected to the boss 4361. The servo motor 432, the torque motor 435 and the flaw detector 437 are all connected to the chassis 2 through electrical signals.

[0036] The torque motor 435 outputs a fixed-axis torque to the hemisphere 436 according to the electronic 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 to the ground. The hemisphere 436 drives the flaw detector 437 to reciprocate and adjust the tilt angle, thereby performing all-round scanning flaw detection on the copper bar without blind spots.

[0037] 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 tube cavity 511, a cross rail 512 and an internal thread 513. The slide 52 is slidably connected to the cross 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, and the outer tube 56 is provided with an external thread 561. The internal thread 513 and the external thread 561 are threadedly connected.

[0038] The first motor 53 outputs a fixed-axis torque to the frame tube 54 according to the electrical control signal of the chassis 2. The frame tube 54 is fixed with the outer tube 56. Through the threaded assembly between the outer thread 561 and the inner thread 513 on the outer tube 56, the outer tube 56 is spirally displaced along the tube 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 fits the end face of the copper alloy rod to complete the adsorption.

[0039] 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 inclined flow channel 572. The laser rangefinder 55 is fixedly connected to the outer cylinder 56. The air extraction channel 571 is communicated with the inclined flow channel 572. The inclined flow channels 572 are provided with several groups. The several groups of inclined flow channels 572 are evenly distributed along the circumference of the end face of the inner cylinder 57 away from the first motor 53. The first motor 53 and the laser rangefinder 55 are both connected to the chassis 2 through electrical signals.

[0040] The first motor 53 continuously outputs torque, and the outer cylinder 56 moves toward 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 to control the first motor 53 to stop outputting torque. The external air pump draws vacuum through the exhaust channel 571 and the inclined flow channel 572, so that the inner cylinder 57 vacuum absorbs the end face of the rod. The driving motor 31 drives the rod to rotate, and the inner cylinder 57 rotates inside the outer cylinder 56.

[0041] The working principle of the present invention is as follows: before the inspection operation, the high-quality copper alloy rod is placed on the central axis of the three-jaw chuck 33, and the three groups of air-floating jaws 34 are displaced along the slide groove 331 toward the central axis of the three-jaw chuck 33. The external air pump introduces compressed air into the conical shell 341 through the air inlet 342. The air passes through the outside of the inner box 3433 and is discharged from several groups of air-floating holes 3431 linearly distributed along the conical surface of the conical shell 341, forming an air film at the place where it contacts the high-quality copper alloy rod. The external vacuum pump vacuumizes the inside of the inner box 3433 through the suction hole 3432 and the exhaust port 343, and vacuum adsorbs the rod. The high-quality copper alloy rod is non-destructively clamped by air flotation and vacuum adsorption. The first motor 53 continuously outputs torque, and the outer cylinder 56 displaces toward 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, which controls the first motor 53 to stop outputting torque. The external air pump is pumped out through the suction hole 3432 and the exhaust port 343. The air channel 571 and the oblique flow channel 572 are vacuumed, so that the inner cylinder 57 vacuum absorbs the end face of the rod, and the fixed axis torque is output to the main shaft 32 by the driving motor 31. During the flaw detection, the three-jaw chuck 33 drives the copper alloy rod to rotate around its axis, and the inner cylinder 57 rotates in the outer cylinder 56. The magnetic suspension slide 42 moves back and forth along the axis of the rod. The servo motor 432 outputs the fixed axis torque to the gear rod 433, and the gear rod 433 rotates around its axis in the side hole 4312. The tooth surfaces of the arc tooth pair 4341 mesh, transmitting the torque of the gear rod 433 to the arc shell 434. The arc shell 434 slides in an arc shape along the arc track 4311, causing the flaw detector 437 to move to the inspection station. 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 to the ground. The hemisphere 436 drives the flaw detector 437 to reciprocate and adjust the tilt angle, thereby performing all-round scanning flaw detection on the copper bar without blind spots.

[0042] 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 embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A nondestructive testing device for internal defects of high-quality copper alloy bars, characterized by: The detection device comprises a base (1), a chassis (2), a rotating mechanism (3), a flaw detection mechanism (4) and a limiting mechanism (5), wherein the rotating mechanism (3) comprises a driving motor (31), the flaw detection mechanism (4) comprises a slide rail platform (41), and the limiting mechanism (5) comprises a base (51). The chassis (2), the driving motor (31), the slide rail platform (41) and the base (51) are all fixedly connected to the base (1), and the rotating mechanism (3), the flaw detection mechanism (4) and the limiting mechanism (5) are all connected to the chassis (2) via electrical signals.

2. The nondestructive testing equipment for internal defects of high-quality copper alloy bars according to claim 1, characterized in that: The rotary mechanism (3) further comprises a main shaft (32), a three-jaw chuck (33) and an air-floating jaw (34); the drive motor (31) is connected to the chassis (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-floating jaw (34) comprises a conical shell (341); a slide groove (331) is provided on the three-jaw chuck (33); the slide groove (331) and the air-floating jaw (34) are each provided in three groups; the three groups of the slide groove (331) and the air-floating jaw (34) are uniformly distributed along the circumference of the three-jaw chuck (33); the conical shell (341) is slidably connected to the slide groove (331).

3. The nondestructive testing equipment for internal defects of high-quality copper alloy bars according to claim 2, characterized in that: The air-floating clamp (34) further comprises an inner box (3433), and the conical shell (341) is provided with an air inlet (342), an air extraction port (343), an air-floating hole (3431) and an adsorption hole (3432). The inner box (3433) is fixedly connected to the conical shell (341), and the air extraction port (343) and the adsorption hole (3432) are both arranged on the inner side of the inner box (3433), and the air inlet (342) and the air-floating hole (3431) are both arranged on the outer side of the inner box (3433). The air-floating holes (3431) and the adsorption holes (3432) are each provided in a plurality of groups, and the plurality of groups of the air-floating holes (3431) and the adsorption holes (3432) are linearly and evenly distributed along the edge of the conical shell (341), and the air-floating holes (3431) are provided on the conical surface of the conical shell (341).

4. The nondestructive testing equipment for internal defects of high-quality copper alloy bars according to claim 1, characterized in that: The flaw detection mechanism (4) further includes a magnetic levitation slide (42) and a scanning mechanism (43). The scanning mechanism (43) includes a base frame (431). The base frame (431) 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.

5. The nondestructive testing equipment for internal defects of high-quality copper alloy bars according to claim 4, characterized in that: The scanning mechanism (43) further comprises a servo motor (432), a gear rod (433) and an arcuate shell (434); the servo motor (432) is fixedly connected to the base frame (431); the output end of the servo motor (432) is fixedly connected to the gear rod (433); an arcuate track (4311) and a side hole (4312) are provided on the base frame (431); an arcuate tooth pair (4341) is provided on the arcuate shell (434); the gear rod (433) is rotatably connected to the side hole (4312); the gear rod (433) meshes with the tooth surface of the arcuate tooth pair (4341); and the arcuate shell (434) is slidably connected to the arcuate track (4311).

6. The nondestructive testing equipment for internal defects of high-quality copper alloy bars according to claim 5, characterized in that: The scanning mechanism (43) further includes a torque motor (435), a hemisphere (436) and a flaw detector (437). The torque motor (435) is fixedly connected to the arc shell (434). The arc shell (434) is further provided with a hemisphere cavity (4342) and a transverse groove (4343). The hemisphere (436) contacts the hemisphere cavity (4342). The output end of the torque motor (435) is fixedly connected to the hemisphere (436). The hemisphere (436) is provided with a convex column (4361). The convex column (4361) is slidably connected to the transverse groove (4343). The flaw detector (437) is fixedly connected to the convex column (4361). The servo motor (432), the torque motor (435) and the flaw detector (437) are all connected to the chassis (2) via electrical signals.

7. The nondestructive testing equipment for internal defects of high-quality copper alloy bars according to claim 1, characterized in that: The limiting mechanism (5) further comprises a slide (52), a first motor (53), a frame tube (54) and an outer tube (56); the base (51) is provided with a tube cavity (511), a cross rail (512) and an internal thread (513); the slide (52) is slidably connected to the cross 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 threadedly connected.

8. The nondestructive testing equipment for internal defects of high-quality copper alloy bars according to claim 7, characterized in that: The limiting mechanism (5) further comprises a laser rangefinder (55) and an inner cylinder (57), wherein the inner cylinder (57) is rotatably connected to the outer cylinder (56), and an air extraction channel (571) and an oblique flow channel (572) are provided on the inner cylinder (57), wherein the laser rangefinder (55) is fixedly connected to the outer cylinder (56), and the air extraction channel (571) is in communication with the oblique flow channel (572), and the oblique flow channels (572) are provided in a plurality of groups, and the plurality of groups of oblique flow channels (572) are evenly distributed along the circumference of the end face of the inner cylinder (57) away from the first motor (53), and the first motor (53) and the laser rangefinder (55) are both connected to the chassis (2) via electrical signals.

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