Probe frame for calibration of ultrasonic detection instrument
By designing a probe holder for calibrating ultrasonic testing instruments, the problem of unstable probe orientation was solved, achieving highly repeatable and accurate calibration results, applicable to test blocks of different specifications.
Patent Information
- Application Number
- CN202423077266.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In existing technologies, the probe orientation is difficult to stabilize during the calibration of ultrasonic testing instruments, resulting in poor repeatability of calibration results and affecting the accuracy of test data.
An ultrasonic testing instrument calibration probe holder is designed, including a support and a pad. The support straddles the test block and can be translated along a first direction. The pad is adjacent to the probe in the opening in the perpendicular direction. The probe is stably positioned by sliding fit and flexible connector to ensure that the ultrasonic beam is aligned with the defects of the test block.
It achieves stable probe positioning, improves the repeatability of calibration results and the accuracy of test data, is applicable to test blocks of different specifications, is easy to operate, and improves calibration efficiency.
Smart Images
Figure CN223664580U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of ultrasonic testing instrument calibration, and particularly relates to a probe rack for ultrasonic testing instrument calibration. BACKGROUND
[0002] Ultrasonic testing is widely used in defect detection of mechanical parts. Before testing the mechanical parts, the ultrasonic instrument needs to be calibrated on a test block. The method is to place the probe of the ultrasonic instrument on the test block containing artificial defects, coat the coupling agent on the surface of the test block in contact with the probe, adjust the position of the probe to make the ultrasonic wave emitted by the probe align with the artificial defect on the test block, and rely on the reflection of the ultrasonic wave by the artificial defect to calibrate the difference between the actual emission angle of the probe and the nominal value, as well as the energy of the reflection of the artificial defect by the instrument probe combination. This process has high requirements for the position of the probe. In the traditional way, the probe is manually held. After coating the coupling agent, the friction between the probe and the test block is very small, and the direction of the probe is difficult to stabilize, making it difficult to accurately align the ultrasonic wave with the artificial defect on the test block, and the calibration is difficult, and the calibration result has poor repeatability, affecting the accuracy of the test data. SUMMARY
[0003] The utility model aims at solving the problems of the probe direction being difficult to stabilize and the calibration result having poor repeatability in the calibration of the ultrasonic testing instrument in the prior art, and provides a probe rack for ultrasonic testing instrument calibration.
[0004] To achieve the above-mentioned purpose, the technical solution provided by the utility model is:
[0005] The utility model provides a kind of probe rack for ultrasonic testing instrument calibration, including support and cushion block;
[0006] The support is used to be placed on test block and is clamped on both sides of test block, and can be translated along the first direction relative to test block to calibrate, and the support is opened at the position opposite to the working surface of test block;
[0007] The cushion block is used to be adjacently arranged in the opening with the probe in the second direction perpendicular to the first direction and contact with the working surface of test block, and the cushion block and the probe are limited in the first direction by the opening, and the cushion block can adjust the position of the probe in the second direction, so that the ultrasonic wave beam emitted by the probe is aligned with the artificial defect on the test block.
[0008] Further, the support includes first sub-support and second sub-support, the cross section of first sub-support and second sub-support perpendicular to the first direction is L-shaped, and each includes first leg and second leg;The first leg of first sub-support and second sub-support is connected above the working surface of test block, and the second leg of first sub-support and second sub-support is respectively located on both sides of test block to clamp test block.
[0009] Further, the first leg of the first sub-bracket and the first leg of the second sub-bracket are connected in a sliding fit mode; the end of the first leg of one of the first sub-bracket and the second sub-bracket is provided with a sliding groove; and the first leg of the other of the first sub-bracket and the second sub-bracket is capable of sliding in the second direction in the sliding groove.
[0010] Further, the probe bracket further comprises a flexible connecting piece for connecting the first legs of the first sub-bracket and the second sub-bracket; the sliding groove of the first leg is provided with a first protrusion at a groove end away from the end of the first leg, and the other first leg is provided with a second protrusion at the end; and the flexible connecting piece is fixedly connected to the two first legs through the first protrusion and the second protrusion, so that the first sub-bracket and the second sub-bracket clamp the test block.
[0011] Further, the flexible connecting piece is a rope body or a rubber band.
[0012] Further, the flexible connecting piece can be replaced by a spring, and two ends of the spring are hooked on the first protrusion and the second protrusion.
[0013] Further, the first leg of the first sub-bracket is provided with a multi-tooth structure on a surface facing the test block, and an end surface of the multi-tooth structure is a plane.
[0014] Further, the second leg of the first sub-bracket and the second sub-bracket is provided with a multi-tooth structure on a surface facing the test block, and an end surface of the multi-tooth structure is a plane.
[0015] The probe bracket has the advantages that:
[0016] 1. The probe bracket for calibrating an ultrasonic detection instrument is characterized in that the bracket is installed on the test block in a sliding mode along the calibration direction, the pad and the probe are located adjacently in the opening of the bracket opposite to the working surface of the test block, and the pad and the probe are limited in the opening in the calibration direction, and the pad can adjust and limit the position of the probe in the direction perpendicular to the calibration direction. Therefore, the probe bracket has a simple structure and can be simply and quickly installed on the test block; in addition, the probe is limited in the calibration direction, and is not limited on one side in the direction perpendicular to the calibration direction, so that when the probe is manually held and moved back and forth on the working surface of the test block along the calibration direction, only appropriate pressing force needs to be applied to the probe, so that the probe can be stably translated along the calibration direction, and cannot shake in the left-right direction perpendicular to the moving direction, so that the probe cannot be controlled in the left-right direction and the direction cannot be controlled, and the high repeatability of the calibration result can be ensured, thereby improving the accuracy of the detection data.
[0017] 2. The bracket in the utility model is composed of two left and right sub-brackets, and the two sub-brackets are connected in a sliding fit mode along the left-right direction, so that the probe bracket can be applied to test blocks of different widths and different specifications, and has strong applicability.
[0018] 3、The utility model discloses a flexible connecting piece such as rope body or rubber band is used to realize the fixing of two sub -supports, make the same flexible connecting piece can be completed the fixing of support under the use of different specification test block, and simple operation can improve the calibration efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0019] The above and / or other features and advantages of the utility model will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:
[0020] Figure 1 is the schematic perspective view of the probe holder for ultrasonic detection instrument calibration in the utility model during use;
[0021] Figure 2 is the schematic perspective view of the test block in the utility model;
[0022] Figure 3 is the schematic perspective view of the cushion block in the utility model;
[0023] Figure 4 is the schematic perspective view of the probe in the utility model;
[0024] Figure 5 is the schematic perspective view of the first sub -support in the utility model;
[0025] Figure 6 is the schematic perspective of the second sub -support in the utility model.
[0026] In the drawing: 1-support, 11-first sub -support, 111-first sub -support's first branch leg, 112-first sub -support's second branch leg, 113-slotted guide, 114-first protruding, 115-first tooth part, 116-second tooth part, 12-second sub -support, 121-second sub -support's first branch leg, 122-second sub -support's second branch leg, 123-second protruding, 124-third tooth part;2-cushion block;3-flexible connecting piece;100-test block, 101-artificial defect;200-probe. DETAILED DESCRIPTION
[0027] The utility model will be described in detail with reference to the attached drawings by the example embodiment of the utility model. It should be pointed out that the following detailed description of the utility model is only for the purpose of illustration, and is not limited to the utility model.
[0028] It should be noted that in the context of the present application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise" and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0029] In addition, terms such as "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features.
[0030] The utility model provides a kind of probe rack for calibrating ultrasonic testing instrument, for installing the probe of ultrasonic testing instrument, after the surface of test block and probe contact is coated with coupling agent, make probe stable movement on test block, to make the ultrasonic wave emitted by probe and the artificial defect on test block alignment, to calibrate ultrasonic instrument.
[0031] Refer to Figure 1 , the probe rack for calibrating ultrasonic testing instrument as the exemplary embodiment of the utility model includes support 1 and cushion block 2, support 1 is used to straddle on test block 100 and hold test block 100 both sides, and is used to install probe 200, cushion block 2 is used to limit the position of probe 200, to make probe 200 with Figure 2 Artificial defect 101 shown in test block 100 in the middle is circular transverse hole processed in test block. Support 1 and cushion block 2 can adopt 45 number steel, quenching and tempering state, and can be other steel, aluminum alloy and other metal materials.
[0032] Support 1 can be translated in first direction on the working surface of test block 100 relative to test block 100 to calibrate, that is, first direction is the calibration direction of front and back, and the working surface of test block 100 is its upper surface receiving the ultrasonic wave emitted by probe. Support 1 is provided with opening at the position opposite to the working surface of test block 100, and the opening is used to receive cushion block 2 and probe 200 shown in Figure 3 And Figure 4 .
[0033] The cushion block 2 can be cuboid, and the cushion block 2 is used to be arranged in the opening in abutment with the probe 200 in a second direction perpendicular to the first direction and left and right directions and in contact with the working surface of the test block 100, the cushion block 2 and the probe 200 are limited in the first direction by the opening, the cushion block 2 can adjust the position of the probe 200 in the second direction, that is, adjust the distance between the probe and the left and right end surfaces of the test block, so that the ultrasonic beams emitted by the probe 200 when moving forward and backward can be aligned with the artificial defects 101 on the test block 100, especially the center of the ultrasonic beams is aligned with the center of the artificial defects 101.
[0034] In combination Figure 3 And Figure 4 In order to make the probe holder applicable to test blocks of different specifications and widths, improve applicability, in the preferred embodiment, the support 1 comprises a first sub-support 11 and a second sub-support 12. The cross sections of the first sub-support 11 and the second sub-support 12 perpendicular to the first direction are both L-shaped, the first sub-support 11 comprises a first leg 111 and a second leg 112, and the second sub-support 12 comprises a first leg 121 and a second leg 122. In particular, the first sub-support 11 and the second sub-support 12 are each formed by two L-shaped rigid frames, the L-shaped turns of the two L-shaped rigid frames are rigidly connected by the cross beam, in this case, the first leg 111 and the second leg 112 of the first sub-support 11 are both two, similarly, the first leg 121 and the second leg 122 of the second sub-support 12 are also both two, however, this does not limit the present application, the first leg 111 and 121 can each have one, in this case, the first leg is plate-shaped.
[0035] The first leg 111 of the first sub-support 11 and the first leg 121 of the second sub-support 12 are connected above the working surface of the test block 100, and the second leg 112 of the first sub-support 11 and the second leg 122 of the second sub-support 12 are respectively located on both sides of the test block 100 to clamp the test block 100. Therefore, the distance between the second legs of the two sub-supports can be changed, thereby adapting to test blocks of different widths.
[0036] In order to facilitate the adjustment of the distance between the two sub-supports and the left and right end surfaces of the test block for test blocks of different widths, the first leg 111 of the first sub-support 11 and the first leg 121 of the second sub-support 12 are connected in a sliding fit manner. Specifically, the end of the first leg of one of the first sub-support 11 and the second sub-support 12 is provided with a sliding groove 113, in the embodiment shown in the figure, the sliding groove 113 is provided on the first leg 111 of the first sub-support 11, the sliding groove 113 can be a semi-closed rectangular groove, and the first leg of the other of the first sub-support 11 and the second sub-support 12 can slide left and right in the second direction in the sliding groove 113. With this structure, the distance between the second legs of the two sub-supports can be easily adjusted by sliding adjustment.
[0037] Optionally, to reduce the friction between the support and the test block, to make the probe move smoothly on the test block, to improve the calibration efficiency, and to make the coupling agent be uniformly distributed and form a good coupling effect, the first leg 111 of the first sub-support 11 can be provided with a multi-tooth structure on the surface facing the test block 100, which includes a plurality of first tooth portions 115, and the end surface of the multi-tooth structure is a plane.
[0038] In addition, to reduce the friction between the support and the test block, the second leg 112 of the first sub-support 11 and the second leg 122 of the second sub-support 12 are respectively provided with a multi-tooth structure, i.e., a plurality of second tooth portions 116 and a plurality of third tooth portions 124, on the surface facing the test block 100, and the end surface of the multi-tooth structure is a plane.
[0039] To facilitate the fixation of the two sub-supports in the case of test blocks of different specifications and to improve the calibration efficiency, the probe support of the utility model can further include a flexible connecting piece 3 for connecting the first legs of the first sub-support 11 and the second sub-support 12. Specifically, the sliding groove 113 of the first leg 111 of the first sub-support 11 is provided with a first protrusion 114 at the groove end away from the leg end, which can extend perpendicularly to the sliding groove and parallel to the second leg 112 of the first sub-support 11, and the corresponding other first leg is provided with a second protrusion 123 at the end, which can also extend perpendicularly to the first leg 121 of the second sub-support 12 and parallel to the second leg 122 of the second sub-support 12.
[0040] The flexible connecting piece 3 fixes the two first legs through the first protrusion 114 and the second protrusion 123, so that the first sub-support 11 and the second sub-support 12 can clamp the test block 100. The flexible connecting piece 3 is particularly a rope or a rubber band, which can be hooked on the first protrusion 114 and the second protrusion 123 and tied tight. Thus, for test blocks of different specifications, the tightening force of the rope or the rubber band can be relied on to make the two second legs of the two sub-supports contact the left and right side surfaces of the test block and form an appropriate pressing force, so as to realize the sliding fit. It should be noted that the connection of the two sub-supports by the flexible connecting piece is only an example, and other connection methods can also be used, such as bolt connection, and a spring can also be used to replace the flexible connecting piece, and the two ends of the spring can be hooked on the first protrusion and the second protrusion.
[0041] With the above structure, before calibration, the two sub-brackets 11 and 12 are respectively installed on the test block 100, so that the two first legs are respectively attached to the upper surface of the test block, and the second legs are respectively attached to the left and right side surfaces of the test block; then the two flexible connecting members 3 are installed on the protrusions on the two first legs, and the length is adjusted to have appropriate tightening force, so that the two second legs of the two sub-brackets are appropriately pressed on the two sides of the test block; then the pad 2 and the probe 200 are placed at the opening formed by the two sub-brackets, the pad 2 is located between the probe and the crossbeam of one of the sub-brackets, and the thickness of the pad 2 is adjusted to adjust the position of the probe 200 on the upper surface of the test block, so that the probe is in the appropriate position on the upper surface of the test block in the left and right directions, and therefore the probe holder can be simply and quickly installed on the test block.
[0042] After the above installation is completed, the ultrasonic main shaft direction is parallel to the left side surface of the test block, and forms a certain angle with the front end surface of the test block, and the range is 45 degrees to 75 degrees, and the specific angle value is determined by the processing characteristics of the probe, but the difference between the nominal degree and the actual degree needs to be calibrated. Thereafter, the coupling agent (generally machine oil, paste and other liquids with certain viscosity) is dropped on the upper surface of the test block.
[0043] Then the calibration is started, the probe 200 is held by hand, and appropriate pressing force is applied to the probe 200. Since the probe is limited in the calibration direction, i.e. the front and back direction, and is not limited on one side in the left and right direction perpendicular to the calibration direction, at this time, the probe 200 is slightly pressed, and the probe can be stably translated in the calibration direction, and will not shake in the left and right direction perpendicular to the moving direction, and there will be no situation that the probe is uncontrollable in the left and right direction and the direction is uncontrollable.
[0044] During calibration, the probe 200 is moved forward and backward, and the tooth-shaped structure on the first leg of the two sub-brackets can expel the coupling agent into a strip shape, which is beneficial to the uniform distribution of the coupling agent when the probe passes, so as to form a good coupling effect. When the ultrasonic main shaft accurately aligns with a certain artificial defect in the test block during the movement of the probe, the instrument displays the maximum echo energy of the ultrasonic wave, and at this time, the echo energy of the ultrasonic wave and the relative position of the probe from the target horizontal through hole are recorded, i.e. the calibration of the instrument is completed.
[0045] Therefore, as described above, the probe holder of the utility model has simple structure, and can be simply and quickly installed on the test block; in addition, the probe is limited in the calibration direction, and is not limited on one side in the direction perpendicular to the calibration direction, and therefore, when the probe is manually held and moved forward and backward on the working surface of the test block in the calibration direction, only appropriate pressing force needs to be applied to the probe, so that the probe can be stably translated in the calibration direction, and will not shake in the left and right direction perpendicular to the moving direction, and there will be no situation that the probe is uncontrollable in the left and right direction and the direction is uncontrollable, which can ensure the high repeatability of the calibration result, thereby improving the accuracy of the detection data and the calibration accuracy.
[0046] Finally, it should be noted that the features mentioned and / or shown in the above description of exemplary embodiments of the present application can be combined with one another in an identical or similar manner in one or more other embodiments, in combination with features in other embodiments or in replacement of corresponding features in other embodiments. The technical solutions obtained by such combinations or replacements should also be considered to be within the scope of protection of the present application.
Claims
1. A probe stand for calibration of ultrasonic testing instruments, characterized in that: The support and the cushion block are included. The support is used to be placed on the test block and clamp the test block on both sides, and can be translated relative to the test block in a first direction for calibration, and the support is provided with an opening at a position opposite to a working surface of the test block. The cushion block is used to be placed in the opening in abutment with the probe in a second direction perpendicular to the first direction and in contact with the working surface of the test block, and the cushion block and the probe are limited in the first direction by the opening, and the cushion block can adjust the position of the probe in the second direction to align the ultrasonic beam emitted by the probe with the artificial defect on the test block.
2. The probe stand for ultrasonic testing instrument calibration according to claim 1, characterized in that: The support includes a first sub-support and a second sub-support, and the first sub-support and the second sub-support are both L-shaped in cross section perpendicular to the first direction, and each includes a first leg and a second leg. The first legs of the first sub-support and the second sub-support are connected above the working surface of the test block, and the second legs of the first sub-support and the second sub-support are respectively located on both sides of the test block to clamp the test block.
3. The probe holder for calibration of ultrasonic testing instruments according to claim 2, characterized in that: The first leg of the first sub-support is connected to the first leg of the second sub-support in a sliding fit manner. An end of the first leg of one of the first sub-support and the second sub-support is provided with a sliding groove. The first leg of the other of the first sub-support and the second sub-support can slide in the sliding groove in the second direction.
4. The probe holder for calibration of ultrasonic testing instruments according to claim 3, characterized in that: A flexible connecting piece is further included to connect the first legs of the first sub-support and the second sub-support. The sliding groove of the first leg is provided with a first protrusion at a groove end away from the end of the leg, and the other corresponding first leg is provided with a second protrusion at the end. The flexible connecting piece fixes the two first legs through the first protrusion and the second protrusion to enable the first sub-support and the second sub-support to clamp the test block.
5. The probe holder for calibration of ultrasonic testing instruments according to claim 4, characterized in that: The flexible connecting piece is a rope or a rubber band.
6. The probe holder for ultrasonic testing instrument calibration according to claim 4, characterized in that: The flexible connecting piece can be replaced by a spring, and two ends of the spring are hooked on the first protrusion and the second protrusion.
7. A probe stand for ultrasonic testing instrument calibration according to any of claims 2 to 6, characterized in that: The first leg of the first sub-support is provided with a multi-tooth structure on a surface facing the test block, and an end surface of the multi-tooth structure is a plane.
8. A probe stand for ultrasonic testing instrument calibration according to any of claims 2 to 6, characterized in that: The second leg of the first sub-support and the second sub-support is provided with a multi-tooth structure on a surface facing the test block, and an end surface of the multi-tooth structure is a plane.