Test probe clamping device, ultrasonic tester and method for testing workpieces thereof

Abstract

An embodiment of the present invention discloses a test probe clamping device, an ultrasonic tester and a method for testing a workpiece, which relates to the technical field of ultrasonic testing. It can ensure accurate positioning of the probe center position and consistent contact pressure, thereby improving the accuracy and reliability of test results. It includes: a sleeve, a columnar connecting body, a support panel and a telescopic clamping mechanism; the columnar connecting body is axially slidably arranged in the sleeve, the top of the columnar connecting body is connected with the support panel, at least part of the support panel is located outside the sleeve, the telescopic clamping mechanism is arranged on the support panel, and a laser locator is arranged at the center of the telescopic clamping mechanism; an elastic member is further arranged in the sleeve, and the bottom of the columnar connecting body is supported on the elastic member. The present invention is applicable to ultrasonic testing application scenarios, such as the detection of workpieces.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic testing, and in particular, to a test probe clamping device, an ultrasonic tester, and a method for testing a workpiece therewith. Background Art

[0002] In ultrasonic non-linear testing experiments such as the evaluation of internal micro-defects and porosity of composite materials and the fatigue testing of metal materials, the emission and reception of ultrasonic waves are usually achieved in a one-transmitter-one-receiver form. When the parameters of the used probes are different, for example, the probe sizes are different, when collecting multiple times at the same point or testing different points, if the center position of the probe shifts, it will affect the repeatability and accuracy of the test data. Only when the center position of the probe is coaxial with the workpiece detection point and the contact pressure is consistent can the test data be accurate and reliable. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a test probe clamping device, an ultrasonic tester, and a method for testing a workpiece therewith, which can ensure accurate positioning of the probe center position and consistent contact pressure, thereby improving the accuracy and reliability of the test results.

[0004] To achieve the above object, an embodiment of the present invention provides a test probe clamping device, including: a sleeve, a columnar connecting body, a support panel, and a telescopic clamping mechanism;

[0005] The columnar connecting body is axially slidably disposed in the sleeve, the top of the columnar connecting body is connected to the support panel, at least a part of the support panel is located outside the sleeve, the telescopic clamping mechanism is provided on the support panel, and a laser locator is provided at the center of the telescopic clamping mechanism; an elastic member is further provided in the sleeve, and the bottom of the columnar connecting body is supported on the elastic member.

[0006] Optionally, the telescopic clamping mechanism includes a rotary pusher and a clamping assembly;

[0007] The rotary pusher includes a rotating shaft, and a plurality of push arms are provided on the circumference of the rotating shaft. The rotating shaft of the rotary pusher passes through a central through hole on the support panel, and the laser locator is provided at the center of the end of the rotating shaft of the rotary pusher;

[0008] The clamping assembly includes a plurality of moving bars and clamping members connected to the moving bars. The plurality of moving bars are radially arranged on the support panel, each moving bar is disposed between two adjacent push arms, the first ends of the plurality of moving bars are located on the same circumference, and the plurality of moving bars can slide along the support panel;

[0009] The first end of the moving bar is arc-shaped, the side surface of the pushing arm is tangent to the first end of the moving bar, and during the rotation of the rotary pushing device, the pushing arm pushes the moving bar to move relative to the support panel.

[0010] Optionally, a plurality of pairs of clamping guide blocks are circumferentially and uniformly arranged on the support panel. Each pair of clamping guide blocks has a guiding space, and a first threaded hole is provided on the side surface of the clamping guide block. A first screw for restricting the moving bar is inserted into the first threaded hole.

[0011] The moving bar is arranged in the guiding space.

[0012] The moving bar has a middle groove, the clamping member is clamped in the middle groove, a limiting plate is provided at the other end of the moving bar, a second threaded hole is provided on the limiting plate, and a second screw for pressing the clamping member is inserted into the second threaded hole.

[0013] Optionally, a through first cutting groove is provided on the support panel corresponding to the guiding space. A third threaded hole is provided at the bottom of the clamping member, and a third screw for limiting the clamping member is inserted into the third threaded hole. When the third screw passes through the through first cutting groove and is screwed into the third threaded hole to limit and fix the clamping member, the inner side of the third screw head presses against the bottom surface of the support panel.

[0014] Optionally, a second cutting groove is provided on the columnar connecting body at a position corresponding to the through first cutting groove.

[0015] Optionally, the clamping member has a base portion and a clamping portion above the base portion. The base portion is clamped in the middle groove of the moving bar, and the clamping portion is an arc-shaped panel bent towards the clamping center.

[0016] Optionally, three pushing arms are provided on the circumferential direction of the rotating shaft at intervals of 120°, and the number of the moving bars is the same as the number of the pushing arms.

[0017] Optionally, a groove is provided at the top end of the columnar connecting body, and a protrusion is provided at the bottom of the support panel. The support panel is inserted into the groove through the protrusion.

[0018] Optionally, the elastic member is a spring.

[0019] Optionally, a pressure sensor is further provided at the bottom of the sleeve. The pressure sensor is located below the elastic member, a gasket is provided between the pressure sensor and the elastic member, and the pressure sensor is electrically connected to a pressure monitoring device.

[0020] Optionally, an opening is formed in the side surface of the sleeve at the position of the pressure sensor, a sliding door is provided at the opening, and a wire groove for the pressure sensor is cut at the mating position of the sliding door and the sleeve.

[0021] Optionally, the laser locator is a dot infrared laser locator.

[0022] Optionally, the rotating shaft of the rotating pusher passes through the central through hole on the support panel and is connected to a ratchet mechanism arranged in the central cavity of the columnar connecting body.

[0023] In a second aspect, an embodiment of the present invention provides an ultrasonic tester, including a workbench and the test probe clamping device according to any one of the first aspect, and the test probe clamping device is mounted on the workbench through the sleeve.

[0024] In a third aspect, an embodiment of the present invention provides a method for testing an ultrasonic workpiece, which is implemented based on the ultrasonic tester in the second aspect, and includes: turning on the laser locator and adjusting the work platform so that the laser spot aligns with and reaches the center position of the workpiece to be detected;

[0025] Adjusting the clamping space of the telescopic clamping mechanism on the support panel, and when the laser spot at the center of the clamping space of the telescopic clamping mechanism is coaxial with the workpiece to be detected, placing the test probe in the clamping space of the telescopic clamping mechanism and fixing it;

[0026] Starting the ultrasonic tester for flaw detection testing, and during the testing process, using the elastic member below the columnar connecting body to balance the pressure of the probe contacting the workpiece detection point in real time to ensure the consistency of the contact pressure during the testing process;

[0027] Collecting the test data of the workpiece to be detected;

[0028] Repeating the above steps until the testing of all the points to be detected on the workpiece is completed.

[0029] The test probe clamping device, ultrasonic testing instrument and method for testing workpieces provided by the embodiments of the present invention include: a sleeve, a columnar connecting body, a support panel and a telescopic clamping mechanism; the columnar connecting body is axially slidably arranged in the sleeve, the top of the columnar connecting body is connected with the support panel, at least part of the support panel is located outside the sleeve, the telescopic clamping mechanism is arranged on the support panel, and a laser locator is arranged at the center of the telescopic clamping mechanism; an elastic member is further arranged in the sleeve, and the bottom of the columnar connecting body is supported on the elastic member. When installing the test probe before testing, fix the device on the working platform of the detection or testing instrument, equipment, etc., turn on the laser locator, make the laser point align with and reach the center position of the workpiece to be detected, position the installation center of the test probe based on the current determined laser point position of the laser locator, and adjust the clamping space of the telescopic clamping mechanism to adapt to the contour size of the probe to clamp the probe based on this positioning center, ensuring the accurate positioning of the probe center position; through the elastic member arranged in the sleeve and below the columnar connecting body, the contact pressure between the probe and the workpiece detection point during the test process can be balanced, and the consistency of the contact pressure between the probe and the detection point can be ensured; based on the technical effects analyzed by combining the above structure and principle, it can be seen that the technical solution provided by this embodiment can ensure the accurate positioning of the probe center position and the consistency of the contact pressure, thereby improving the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 Structural schematic diagram of an embodiment of the test probe clamping device of the present invention;

[0032] Figure 2 Front view of the structure of an embodiment of the test probe clamping device of the present invention;

[0033] Figure 3 For Figure 2 right view;

[0034] Figure 4 For Figure 2 top view;

[0035] Figure 5 For Figures 1 to 4 structural schematic diagram of an embodiment of the columnar connecting body in

[0036] Figure 6 ForFigures 1 to 4 Schematic structural diagram of an embodiment of the support panel in

[0037] Figure 7 is Figures 1 to 4 Schematic structural diagram of an embodiment of the moving bar in Detailed implementation manners

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] It should be clear that in order to more clearly illustrate the present invention, numerous technical details are described in the following specific embodiments. Those skilled in the art should understand that the present invention can still be implemented without some of these details. In addition, in order to highlight the inventive concept of the present invention, some methods, means, components and their applications well known to those skilled in the art are not described in detail, but this does not affect the implementation of the present invention. The embodiments described herein are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0040] In order to facilitate the public's understanding of the technical solutions of the embodiments of the present invention, a brief introduction to the current situation and existing problems of the existing probe positioning technology will be given first:

[0041] Traditional methods usually rely on completely manual positioning methods on the workpiece to be measured to solve the alignment problem of the probe center. However, completely relying on manual positioning will affect the positioning accuracy of the probe center due to the errors caused by manual operations. In addition, before testing, the wafer or probe is fixed at the detection point by means of the adhesive force of the coupling agent to ensure the adhesion force. However, the disadvantage of using the adhesive force of the coupling agent for fixation is that the adhesive force will change with the vibration of the probe wafer and also change over time, thus unable to ensure the consistency of the contact pressure between the probe and the surface of the workpiece detection point, thereby affecting the accuracy and reliability of the test results.

[0042] Embodiment 1

[0043] The test probe clamping device provided by the embodiments of the present invention facilitates the clamping and positioning of the probe and is applicable to ultrasonic testing application scenarios, such as the detection of workpieces. During testing, based on the clamping device of this embodiment to clamp and position the test probe, the accuracy and reliability of the test results can be improved.

[0044] Refer to Figures 1 to 7As shown in the figure, the test probe clamping device provided by the embodiment of the present invention includes: a sleeve 1, a columnar connecting body 2, a support panel 3, and a telescopic clamping mechanism 4; the columnar connecting body 2 is axially slidably arranged in the sleeve 1, the top of the columnar connecting body 2 is connected with the support panel 3, at least part of the support panel 3 is located outside the sleeve 1, the telescopic clamping mechanism 4 is arranged on the support panel 3, and a laser locator 5 is arranged at the center of the telescopic clamping mechanism 4; an elastic member 6 is further arranged in the sleeve 1, and the bottom of the columnar connecting body 2 is supported on the elastic member 6.

[0045] Among them, the sleeve 1 is used to install the clamping device on the test workbench, and the contour of the sleeve 1 can be adaptively set according to the clamping structure of the test workbench. For example, if the clamping structure of the workbench is an annular clamping part, the sleeve 1 can be made into a sleeve 1 with a cylindrical outer contour. The contour of the columnar connecting body 2 is adaptively set according to the structure of the internal space of the sleeve 1. For example, if the sleeve 1 has a cylindrical structure inside, the columnar connecting body 2 can be set as a cylindrical connecting body.

[0046] Specifically, a chute penetrating the upper and lower surfaces is arranged on the side surface of the columnar connecting body 2, and a raised strip penetrating the upper and lower surfaces is arranged on the inner wall of the sleeve 1. When the columnar connecting body 2 is installed in the sleeve 1, through the cooperation of the chute and the raised strip, it can be ensured that the columnar connecting body 2 slides smoothly along the axis when needed; for example, during the test, the workbench vibrates. At this time, the elastic body arranged below the columnar connecting body 2 slides up and down with the columnar connecting body 2 to play a role in shock absorption, so as to ensure the consistency of the contact pressure between the probe and the workpiece detection point during the test. The elastic member 6 can be a spring, such as a compression spring.

[0047] See Figure 5 and Figure 6 As shown in the figure, in some embodiments, a plurality of grooves 21 are further arranged at the top of the columnar connecting body 2, and a plurality of protrusions 31 corresponding to the grooves 21 are arranged at the bottom of the support panel 3. The support panel 3 is connected to the columnar connecting body 2 by inserting the protrusions 31 into the grooves 21.

[0048] The test probe clamping device, ultrasonic tester and method for testing workpieces provided by the embodiments of the present invention, when installing the test probe before testing, fix the device on the working platform of detection or test instruments, equipment, etc., turn on the laser locator 5, so that the laser point aligns with and reaches the center position of the workpiece to be detected point, position the installation center of the test probe based on the current determined laser point position of the laser locator 5, and adjust the clamping space of the telescopic clamping mechanism 4 to adapt to the contour size of the probe to clamp the probe based on this positioning center, ensuring the accurate positioning of the probe center position; through the elastic member 6 arranged in the sleeve 1 and below the columnar connecting body 2, the contact pressure between the probe and the workpiece detection point during the test process can be balanced, and the consistency of the contact pressure between the probe and the detection point can be ensured; based on the above technical effects analyzed by combining the structure and principle, it can be known that the technical solution provided by this embodiment can ensure the accurate positioning of the probe center position and the consistency of the contact pressure, thereby improving the accuracy and reliability of the test results.

[0049] Among them, the laser locator 5 can be a dot infrared laser locator, a line infrared laser locator, etc.

[0050] The telescopic clamping mechanism 4 is used to clamp the test probe. Since a clamping mechanism with a telescopic structure is adopted, it can be applicable to the positioning and clamping of probes with different size specifications.

[0051] See Figures 1 to 4 As shown, in an optional embodiment, the telescopic clamping mechanism 4 includes a rotary pusher and a clamping assembly.

[0052] The rotary pusher includes a rotating shaft (the position shown by the laser locator in the figure). A plurality of push arms 411 are arranged on the circumference of the rotating shaft. The rotating shaft of the rotary pusher passes through the central through hole 32 on the support panel 3. In a specific embodiment, the rotating shaft of the rotary pusher passes through the central through hole 32 on the support panel 3 and is connected to a ratchet mechanism (not shown in the figure) arranged in the central cavity 22 of the columnar connecting body 2. The ratchet mechanism is a one-way ratchet mechanism and has the functions of one-way rotation and reverse locking. When the clamping assembly needs to be reset to the initial clamping state, the rotary pusher can be pulled outwards to separate the lower end of the rotating shaft of the rotary pusher from the ratchet, so that the ratchet and the rotary pusher are in a two-way movable state. When reset to the initial position, the rotary pusher is pushed into the position where the lower end of the rotating shaft meshes with the ratchet. Specifically, the setting of the ratchet mechanism to achieve the functions of one-way rotation and reverse locking is prior art and will not be elaborated here. The relevant content in the chapter on ratchet mechanisms in mechanical design can be referred to.

[0053] It can be understood that the rotary pusher has room for movement in the axial direction to realize pulling outwards or pushing inwards to achieve meshing and separation with the ratchet, thereby realizing the reset of the clamping assembly.

[0054] The laser locator 5 is disposed at the center of the end of the rotating shaft of the rotating pusher.

[0055] See Figure 1 and Figure 7 As shown, the clamping assembly includes a plurality of moving bars 7 and clamping members 8 connected to the moving bars 7. The plurality of moving bars 7 are radially arranged on the support panel 3. Each moving bar 7 is disposed between two adjacent pushing arms 411. The first ends of the plurality of moving bars 7 are located on the same circumference. The plurality of moving bars 7 can slide along the support panel 3. The first end of the moving bar 7 is arc-shaped, and the side surface of the pushing arm 411 is tangent to the first end of the moving bar 7. During the rotation of the rotating pusher, the pushing arm 411 pushes the moving bar 7 to move relative to the support panel 3. In this way, the clamping member 8 connected to the moving bar 7 also moves relative to the support panel 3, and the clamping space changes accordingly, so that probes of different sizes can be clamped.

[0056] See Figure 1 , Figure 3 and Figure 6 As shown, in some embodiments, a plurality of pairs of clamping guide blocks 9 are circumferentially and uniformly arranged on the support panel 3. Each pair of clamping guide blocks 9 has a guiding space. A first threaded hole 91 is provided on the side surface of the clamping guide block 9, and a first screw 92 for restricting the moving bar 7 is inserted into the first threaded hole 91. The moving bar 7 is disposed in the guiding space. The moving bar 7 has an intermediate groove 71, and the clamping member 8 is clamped in the intermediate groove 71. A limiting plate 72 is provided at the other end of the moving bar 7, and a second threaded hole 73 is provided on the limiting plate 72. A second screw 74 for pressing the clamping member 8 is inserted into the second threaded hole 73.

[0057] After the installation position of the probe is determined by the laser locator 5, the telescopic clamping mechanism 4 rotates the pusher to push the moving bar 7 to move along the support panel 3. When the clamping space of the clamping member 8 is adjusted to an appropriate size, the center of the test probe is aligned with the center of the rotating pusher and placed in the clamping space formed by the clamping member 8. The lateral freedom of the clamping member 8 is restricted by the clamping action of the moving bar 7 on the clamping member 8, and the clamping member 8 is tightened by the second screw 74 on the back of the clamping member 8, so as to jointly fix the clamping member 8, thereby completing the fixed installation of the test probe in the clamping space.

[0058] In some other embodiments, a through first cutting groove 33 is provided on the support panel 3 corresponding to the guiding space. A third threaded hole is provided at the bottom of the clamping member 8, and a third screw 81 for limiting the clamping member 8 is inserted through the third threaded hole. When the third screw 81 is screwed into the third threaded hole through the through first cutting groove 33 to limit and fix the clamping member 8, the inner side of the third screw head presses against the bottom surface of the support panel 3. The setting of the first cutting groove facilitates the installation of the third screw.

[0059] Through the specific setting of the third screw, the degree of freedom of the clamping member 8 in the vertical direction is restricted, and since the inner side of the third screw head presses against the bottom surface of the support panel 3, it can also play a role in laterally fixing the clamping member, thereby further increasing the firmness of the test probe in the clamping space.

[0060] See Figures 1 to 4 、 Figure 5 and Figure 6 As shown, in an alternative embodiment, a second cutting groove 23 is provided on the columnar connecting body 2 at a position corresponding to the through first cutting groove 33. On the one hand, the second cutting groove 23 facilitates the installation of the third screw 81 from below, and on the other hand, it can also accommodate the third screw head to prevent the exposed screw head from affecting the close contact connection between the support panel 3 and the upper end of the columnar connecting body 2. Optionally, the second cutting groove 23 is a rectangular cutting groove formed by cutting along the side edge of the columnar connecting body 2. The depth of the second cutting groove 23 is at least the same as the length of the threaded section of the third screw 81, and the groove width is greater than the maximum width of the end of the third screw 81. Preferably, the groove width is 4 - 8 mm greater than the maximum width of the end of the third screw 81.

[0061] Specifically, see Figure 1 and Figure 4 As shown, the clamping member 8 has a base 82 and a clamping portion 83 above the base 82. The base is clamped in the middle groove of the moving strip 7 to limit the lateral degree of freedom of the clamping member 8, and the clamping portion is an arc-shaped panel bent towards the clamping center for clamping the probe.

[0062] More specifically, the base of the clamping member 8 has a structure that is wider at the top and narrower at the bottom. Among them, the narrower part of the base is clamped in the middle groove of the moving strip 7, and the wider part of the base is located on the upper end surface of the moving strip 7, playing a role in limiting the position and preventing the clamping member 8 from moving downward due to vibration, thereby further enhancing the firmness of the clamping.

[0063] In some alternative embodiments, three push arms 411 are provided on the circumferential direction of the rotating shaft at intervals of 120°. The number of the moving strips 7 is the same as the number of the push arms 411. Three pairs of clamping guide blocks 9 are provided on the support panel 3 in the circumferential direction, and each pair of clamping guide blocks 9 is spaced 120°.

[0064] Referring to Figures 1 to 3 As shown, in some alternative embodiments, a pressure sensor 10 is further provided at the bottom of the sleeve 1 for collecting the contact pressure between the probe and the workpiece detection point. Among them, the pressure sensor is preferably a spoke-type pressure sensor; the pressure sensor 10 is located below the elastic member 6, and a gasket 50 is provided between the pressure sensor and the elastic member 6. The pressure sensor is electrically connected to a pressure monitoring device (not shown in the figure). The pressure sensor sends the collected contact pressure between the probe and the workpiece detection point to the pressure monitoring device to realize real-time monitoring of the contact pressure between the probe and the workpiece detection point, so as to facilitate screening out invalid test data.

[0065] Continuing to refer to Figures 1 to 3 As shown, in an alternative embodiment, an opening is provided on the side of the sleeve 1 at the position of the pressure sensor, and a sliding door 60 is provided at the opening. A wiring groove 70 for the pressure sensor is cut at the junction of the sliding door and the sleeve 1 for threading the connection cable between the pressure sensor and the pressure monitoring device.

[0066] In order to more clearly illustrate the present invention, the installation process and the process of clamping the probe of a test probe clamping device according to an embodiment of the present invention are described as follows:

[0067] Installation process: Open the sliding door on the side of the sleeve 1, and sequentially place the pressure sensor and the gasket 50. Place the spring through the upper opening of the sleeve 1 so that the spring tightly presses on the gasket to balance the change in the contact pressure when the probe is vibrated, so as to ensure the consistency of the contact pressure between the probe and the workpiece to be detected point;

[0068] Connect the columnar connector 2 to the support panel 3, and install the bearing and the rotary pusher into the central through hole of the support panel 3;

[0069] Fix the device on the workbench of the detection platform or other detection mechanisms through the sleeve 1, turn on the laser locator 5, observe the position of the laser point, and adjust the platform so that the laser point reaches the position of the workpiece to be detected point;

[0070] Lock and fix the current installation position of the device, remove the support panel 3, and twist the rotary pusher to make the moving bar 7 move radially relative to the clamping guide block 9, thereby adjusting the adjustable range of the moving bar 7;

[0071] Turn the first screw on the side of the clamping guide block 9 to fix the position of the moving bar 7. Place the probe at the center of the support panel 3. First, turn the third screw 81 so that part of the third screw 81 is screwed into the third threaded hole at the bottom of the clamping member for initial positioning. Then, turn the second screw 74 so that part of the second screw 74 is screwed into the second threaded hole 73 in the limiting bar. The end of the second screw 74 abuts against the back of the clamping member 8 (referring to the side opposite to the clamping side). The tightening forces of the third screw 81 and the second screw 74 do not reach the level of completely fixing the clamping member. Then, tighten the third screw 81 and the second screw 74 in sequence to restrict the degrees of freedom of the clamping member 8. The third screw 81 causes the second screw and the third screw 81 to extend the same distance, so as to ensure that the probe is clamped by the clamping member 8 at the center of the support panel 3. Tighten the second screw and the third screw 81 to restrict the degrees of freedom of the clamping member 8, thereby clamping the probe at the center of the support panel 3, realizing the positioning and clamping installation of the probe, and ensuring that the center position of the probe is coaxially aligned with the workpiece to-be-detected point. Among them, in a preferred embodiment, the design of the third threaded hole and the second threaded hole is preferably such that when the second screw and the third screw are screwed into the same effective pitch, the clamping member is just fixed tightly, so that the forces on the clamping member in all directions are balanced.

[0072] After positioning and installing the probe, start the testing equipment to test the workpiece. In this way, on the basis of following the principle of single variable, the obtained test data, when used to evaluate and determine the corresponding information of the sample, can correspondingly improve the accuracy of evaluation and determination.

[0073] Another embodiment of the present invention provides an ultrasonic tester, including a workbench and the test probe clamping device described in any one of the foregoing embodiments. The test probe clamping device is installed on the workbench through the sleeve 1. Since the test probe clamping device described in the foregoing embodiment is adopted, it can ensure accurate positioning of the probe center position and consistent contact pressure, thereby improving the accuracy and reliability of the test results.

[0074] On the basis of the foregoing embodiment, another embodiment of the present invention provides a method for ultrasonic testing of workpieces, which is implemented based on the ultrasonic tester described in the foregoing embodiment, and includes:

[0075] Turn on the laser locator 5 and adjust the work platform so that the laser spot is aligned with and reaches the center position of the workpiece to-be-detected point;

[0076] Adjust the clamping space of the telescopic clamping mechanism 4 on the support panel 3. When the laser spot at the center of the clamping space of the telescopic clamping mechanism 4 is coaxially aligned with the workpiece to-be-detected point, place the test probe in the clamping space of the telescopic clamping mechanism 4 and fix it;

[0077] Start the ultrasonic tester for flaw detection testing. During the testing process, use the elastic member 6 below the columnar connector 2 to balance the pressure of the probe contacting the workpiece detection point in real time, ensuring the consistency of the contact pressure during the testing process;

[0078] Collect the test data of the first workpiece to be detected point;

[0079] Repeat the above steps until the testing of all workpiece points to be detected is completed.

[0080] For the workpiece testing method provided in this embodiment, during the testing process, since the accurate positioning of the probe center position and the consistent contact pressure are ensured, the accuracy and reliability of the test results can be improved.

[0081] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0082] The terms such as "upper", "lower", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium.

[0083] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A test probe clamping device, characterized in that, Comprising: A sleeve, a columnar connector, a support panel, and a telescopic clamping mechanism; The columnar connector is axially slidably disposed in the sleeve, the contour of the columnar connector is adaptively set to the structure of the internal space of the sleeve, the top of the columnar connector is connected to the support panel, at least part of the support panel is located outside the sleeve, the telescopic clamping mechanism is provided on the support panel, and a laser locator is provided at the center of the telescopic clamping mechanism; An elastic member is further provided in the sleeve, and the bottom of the columnar connector is supported on the elastic member; The telescopic clamping mechanism includes a rotary pusher and a clamping assembly; The rotary pusher includes a rotating shaft, and a plurality of push arms are provided on the circumference of the rotating shaft; The clamping assembly includes a plurality of moving bars and clamping members connected to the moving bars. The plurality of moving bars are radially arranged on the support panel. Each moving bar is disposed between two adjacent push arms. The first ends of the plurality of moving bars are located on the same circumference, and the plurality of moving bars are slidable along the support panel; The first end of the moving bar is arc-shaped, the side surface of the push arm is tangent to the first end of the moving bar, and during the rotation of the rotary pusher, the push arm pushes the moving bar to move relative to the support panel; A plurality of pairs of clamping guide blocks are evenly arranged circumferentially on the support panel. Each pair of clamping guide blocks has a guiding space. A first threaded hole is provided on the side surface of the clamping guide block, and a first screw for restricting the moving bar is inserted into the first threaded hole; The moving bar is disposed in the guiding space; A limiting plate is provided at the other end of the moving bar. A second threaded hole is provided on the limiting plate, and a second screw for pressing the clamping member is inserted into the second threaded hole; A through first cutting groove is provided on the support panel corresponding to the guiding space. A third threaded hole is provided at the bottom of the clamping member, and a third screw for limiting the clamping member is inserted into the third threaded hole. When the third screw passes through the through first cutting groove and is screwed into the third threaded hole to limit and fix the clamping member, the inner side of the third screw head presses against the bottom surface of the support panel; The clamping member has a base portion and a clamping portion above the base portion. The base portion is clamped in the middle groove of the moving bar, and the clamping portion is an arc-shaped panel bent toward the clamping center.

2. The test probe clamping device according to claim 1, characterized in that, A second cutting groove is provided on the columnar connector at a position corresponding to the through first cutting groove.

3. The test probe clamping device according to claim 1, wherein, Three push arms are provided on the circumference of the rotating shaft at intervals of 120°, and the number of moving bars is the same as the number of push arms.

4. The test probe clamping device according to claim 1, wherein A groove is provided at the top end of the columnar connector, and a protrusion is provided at the bottom of the support panel. The support panel is inserted into the groove through the protrusion.

5. The test probe clamping device according to claim 1, characterized in that, The elastic member is a spring.

6. The test probe clamping device according to claim 1, 4 or 5, characterized in that A pressure sensor is further provided at the bottom of the sleeve. The pressure sensor is located below the elastic member. A gasket is provided between the pressure sensor and the elastic member. The pressure sensor is electrically connected to a pressure monitoring device.

7. The test probe clamping device according to claim 6, wherein, An opening is provided on the side surface of the sleeve at the position of the pressure sensor. A sliding door is provided at the opening, and a wiring groove for the pressure sensor is cut at the junction of the sliding door and the sleeve.

8. The test probe clamping device according to claim 1, wherein, The laser locator is a dot-shaped infrared laser locator.

9. The test probe clamping device according to claim 1, characterized in that, The rotating and pushing device's rotating shaft passes through the central through-hole on the support panel and is connected to the ratchet mechanism arranged in the central cavity of the columnar connecting body.

10. An ultrasonic tester, characterized in that, It includes a workbench and the test probe clamping device according to any one of claims 1 to 9, and the test probe clamping device is installed on the workbench through the sleeve.

11. A method for ultrasonic testing of workpieces, characterized in that, Implemented based on the ultrasonic tester according to claim 10, including: Turn on the laser locator, and adjust the work platform so that the laser point aligns with and reaches the central position of the workpiece to be detected. Adjust the clamping space of the retractable clamping mechanism on the support panel. When the laser point at the center of the clamping space of the retractable clamping mechanism is coaxial with the workpiece to be detected, place the test probe in the clamping space of the retractable clamping mechanism and fix it. Start the ultrasonic tester for flaw detection testing. During the testing process, use the elastic member below the columnar connecting body to balance the pressure of the probe contacting the workpiece detection point in real time to ensure the consistency of the contact pressure during the testing process. Collect the test data of the first workpiece to be detected. Repeat the above steps until the testing of all workpiece points to be detected is completed.

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