CN115166058A - Flexible probe device for detecting curved surface - Google Patents
Flexible probe device for detecting curved surface Download PDFInfo
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- CN115166058A CN115166058A CN202210811893.2A CN202210811893A CN115166058A CN 115166058 A CN115166058 A CN 115166058A CN 202210811893 A CN202210811893 A CN 202210811893A CN 115166058 A CN115166058 A CN 115166058A
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- scanning device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2437—Piezoelectric probes
- G01N29/245—Ceramic probes, e.g. lead zirconate titanate [PZT] probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- Life Sciences & Earth Sciences (AREA)
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- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a flexible probe device for detecting a curved surface, which comprises a scanning device, a cable, a PCB (printed circuit board) and a flexible probe, wherein the scanning device is arranged on the scanning device; the scanning device comprises a plurality of prepressing springs, a plurality of guide sleeves, a scanning device guide plate, a plurality of guide rods, a plurality of deep groove ball bearings, four rubber-coated wheel guide rods, four rubber-coated wheels, a scanning device cover plate and two rubber-coated wheel seats; two rubber coating wheels are fixed on the rubber coating wheel seat, the rubber coating wheel guide rods are vertically fixed at two ends of the rubber coating wheel seat, and the top ends of the rubber coating wheel guide rods are vertically fixed at four corners of a guide plate of a scanning device. The flexible probe device for detecting the curved surface can meet the ultrasonic detection requirements of curved surfaces with different curvatures, prolongs the service life, can ensure the precision, improves the detection efficiency and has obvious advantages for scanning large curved surfaces.
Description
Technical Field
The invention relates to the field of ultrasonic detection, in particular to a flexible probe device for detecting a curved surface.
Background
In recent years, the nondestructive testing technology using ultrasonic probe detection has obvious advantages, so that the nondestructive testing method becomes the fastest nondestructive testing method for industrial detection at present and is also an important means for product quality control. However, with the increasing application of new composite materials, the modern industry has put new demands on ultrasonic detection technology. The requirements for the ultrasonic probe are also increasing, and how to improve the precision, efficiency and automation degree in detection is a leading topic of research in the field of ultrasonic detection in recent years.
The composite material has the advantages of light weight, high strength, corrosion resistance and the like, and is widely applied to the fields of aerospace, new energy automobiles, high-speed rails, ship manufacturing, petroleum, wind power and the like. The composite material has the defects of layering, inclusion, fiber fracture, holes and the like inevitably in the manufacturing and in-service process. Ultrasonic detection is easy to realize when the composite material is in a regular shape, such as a small plane, and the like, but with the development of composite material technology, materials in a large-scale complex curved surface structure are replaced by the composite material, and the detection technical problem caused by the replacement also brings a serious challenge to the traditional detection means.
At present, the scheme for detecting the curved surface workpiece by using an ultrasonic probe in the market mainly comprises two schemes: the first is to use a conventional single-chip probe for detection, and the scheme can ensure that the probe is aligned to the normal direction of a measured point on the surface of a workpiece due to the small outer diameter of the single-chip probe, thereby ensuring the detection precision. But the defects are that the efficiency is low, and the method is not suitable for detecting workpieces with large-range curved surfaces. The other scheme is that the traditional phased array probe is used for detection, the efficiency of the mode is improved, but the mode cannot ensure that each array element of the phased array probe is aligned to the normal direction of a detected point, and along with the change of the curvature of a workpiece, the distance between each array element and the detected workpiece can also change, so that the detection precision is influenced.
The flexible probe device for detecting the curved surface, which can meet the ultrasonic detection requirements of curved surfaces with different curvatures, prolong the service life, ensure the precision, improve the detection efficiency and have obvious advantages in scanning large curved surfaces, is urgently needed to solve the technical problems.
Disclosure of Invention
In order to solve the problems, the invention provides the flexible probe device for detecting the curved surface, which can meet the ultrasonic detection requirements of curved surfaces with different curvatures, prolongs the service life, can ensure the precision, improves the detection efficiency and has obvious advantages for scanning large curved surfaces.
The invention solves the technical problems by the following technical scheme:
the invention provides a flexible probe device for detecting a curved surface, which comprises a scanning device, a cable, a PCB (printed circuit board) and a flexible probe; the scanning device comprises a plurality of prepressing springs, a plurality of guide sleeves, a scanning device guide plate, a plurality of guide rods, a plurality of deep groove ball bearings, four rubber-coated wheel guide rods, four rubber-coated wheels, a scanning device cover plate and two rubber-coated wheel seats; the rubber coating wheel seat is fixedly provided with two rubber coating wheels, the rubber coating wheel guide rods are vertically fixed at two ends of the rubber coating wheel seat, and the top ends of the rubber coating wheel guide rods are vertically fixed at four corners of a guide plate of the scanning device; the guide sleeve is vertically fixed on the scanning device guide plate and penetrates through the scanning device guide plate, the top end of the guide rod is arranged at the lower end of the guide sleeve, the lower end of the prepressing spring is arranged at the upper end of the guide sleeve and is in contact with the top end of the guide rod, the upper end of the prepressing spring is fixed below the scanning device cover plate, the scanning device cover plate is fixed at the upper end of the scanning device guide plate, and the deep groove ball bearing is fixed at the bottom end of the guide rod; the flexible probe comprises a plurality of ultrasonic probe units arranged in parallel, each ultrasonic probe unit comprises an ultrasonic probe unit cover plate, an ultrasonic probe unit shell, an ultrasonic probe unit core component, a pin shaft and a ball, the ultrasonic probe unit core component is fixed in the ultrasonic probe unit shell, the lower end of the ultrasonic probe unit shell is fixedly connected with the deep groove ball bearing through the pin shaft, the ball is arranged below two end parts of the ultrasonic probe unit shell, and the ultrasonic probe unit cover plate is arranged at the upper end of the ultrasonic probe unit shell; the cable is connected with the PCB, the PCB is connected with the core component of the ultrasonic probe unit, and the PCB is fixed in the cavity of the guide plate of the scanning device and the cover plate of the scanning device; four couplant joints are mounted on a guide plate of the scanning device and communicated with the ultrasonic probe unit through pipelines.
In the invention, the scanning device is used for installing the flexible probe and realizing the movement of the flexible probe on the curved surface to be detected.
In the invention, the pre-pressing spring is used for providing elasticity to realize the up-and-down displacement of the guide rod.
In the invention, the guide sleeve is used for installing the pre-pressing spring and the guide rod to realize guiding.
In the invention, the guide plate of the scanning device is used for installing the guide sleeve and the couplant joint.
In the invention, the guide rod and the deep groove ball bearing are used for installing the ultrasonic probe unit.
According to the invention, the rubber coating wheel guide rod, the rubber coating wheel and the rubber coating wheel seat are used for realizing the sliding of the device on the curved surface to be detected.
In the invention, the scanning device cover plate is used for protecting other components arranged on the guiding plate of the scanning device.
In the invention, the cable and the PCB are used for communicating the flexible probe;
preferably, the length of cable conductor is 5m, the crust material of cable conductor is PU.
In the invention, the flexible probe is used for realizing ultrasonic detection on the workpiece; the ultrasonic probe unit is conventional in the field and comprises a ceramic piezoelectric wafer, a matching layer, a backing material, an ultrasonic probe shell, a coupling agent pipeline joint, a coupling agent pipeline and a connector;
preferably, the number of the ultrasonic probe units is 16;
preferably, the material of the ultrasonic probe unit housing is SUS316.
The working principle of the flexible probe device for detecting the curved surface is as follows: the ultrasonic probe units are connected with the guide rod through the pin shaft and the deep groove ball bearing, so that each ultrasonic probe unit can deflect around the pin shaft at a certain angle and can move up and down along with the guide rod in a Z-axis manner, and further, the self-adaptive detection of curved surfaces with different curvatures is realized. 2 the cable wire is connected with the wafer of each ultrasonic probe unit through the PCB board in a switching mode, and after the other point of the cable wire is connected with the instrument through the connector, the instrument can control flexibility to carry out ultrasonic nondestructive testing on the workpiece.
The invention has the positive improvement effects that:
1. the flexible probe is a combined phased array probe of a sectional type ultrasonic probe unit, and is characterized by being flexible and changeable in shape;
2. the ceramic piezoelectric wafer of each ultrasonic probe unit of the sectional type flexible probe can be a single crystal wafer, a double crystal wafer, a linear array wafer, an area array wafer and the like;
3. each ultrasonic probe unit of the sectional type flexible probe can rotate around a rotating point of the guide rod, and each ultrasonic probe unit can independently and elastically move up and down along the Z axis along with the corresponding guide rod, so that the shape of the flexible probe automatically changes along with the change of the curvature of the curved surface, the detection precision is ensured, and the detection efficiency is improved;
4. the scanning device is internally provided with an elastic pre-pressing device, the elastic force of the elastic pre-pressing device acts on a guide rod connected with the ultrasonic probe units, so that the pressure between each ultrasonic probe unit and the workpiece to be detected is elastic pressure, the rigid abrasion between the flexible probe and the workpiece to be detected is reduced, the ball structure is arranged below each ultrasonic probe unit, the friction between the flexible probe and the workpiece to be detected is further reduced, the surface of the workpiece to be detected is protected from being abraded and scraped, and meanwhile, the service life of the flexible probe is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an overall view of a flexible probe apparatus for inspecting curved surfaces in accordance with an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a flexible probe apparatus for detecting curved surfaces according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an ultrasonic probe unit of a flexible probe device for detecting curved surfaces according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the movement of the flexible probe device for detecting a curved surface on a curved surface workpiece to be detected according to the embodiment of the invention.
Description of reference numerals:
1. a scanning device; 2. a flexible probe;
3. a cable wire; 4. a PCB board;
5. a curved surface workpiece to be detected; 10. a coupling agent joint;
11. pre-pressing a spring; 12. a guide sleeve;
13. scanning the device guide plate; 14. a guide bar;
15. a deep groove ball bearing; 16. a rubber-covered wheel guide rod;
17. wrapping a rubber wheel; 18. rubber-coated wheel seats;
19. scanning a device cover plate; 21. an ultrasonic probe unit;
22. an ultrasonic probe unit cover plate; 23. an ultrasound probe unit housing;
24. an ultrasound probe unit core assembly; 25. a ball bearing;
26. and (7) a pin shaft.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, 2, 3 and 4, the present embodiment provides a flexible probe apparatus for detecting a curved surface, which includes a scanning apparatus 1, a cable 3, a PCB 4 and a flexible probe 2; the scanning device 1 comprises 32 pre-pressing springs 11, 32 guide sleeves 12, a scanning device guide plate 13, 32 guide rods 14, 32 deep groove ball bearings 15, four rubber-covered wheel guide rods 16, four rubber-covered wheels 17, a scanning device cover plate 19 and two rubber-covered wheel seats 18; two rubber coating wheels 17 are fixed on a rubber coating wheel seat 18, rubber coating wheel guide rods 16 are vertically fixed at two ends of the rubber coating wheel seat 18, and the top ends of the rubber coating wheel guide rods 16 are vertically fixed at four corners of a scanning device guide plate 13; the guide sleeve 12 is vertically fixed on a scanning device guide plate 13 and penetrates through the scanning device guide plate 13, the top end of the guide rod 14 is arranged at the lower end of the guide sleeve 12, the lower end of the pre-pressing spring 11 is arranged at the upper end of the guide sleeve 12 and is contacted with the top end of the guide rod 14, the upper end of the pre-pressing spring 11 is fixed below a scanning device cover plate 19, the scanning device cover plate 19 is fixed at the upper end of the scanning device guide plate 13, and the deep groove ball bearing 15 is fixed at the bottom end of the guide rod 14; the flexible probe 2 comprises 16 ultrasonic probe units 21 arranged in parallel, each ultrasonic probe unit 21 comprises an ultrasonic probe unit cover plate 22, an ultrasonic probe unit shell 23, an ultrasonic probe unit core component 24, a pin shaft 26 and a ball 25, the ultrasonic probe unit core component 24 is fixed in the ultrasonic probe unit shell 23, the lower end of the ultrasonic probe unit shell 23 is fixedly connected with the deep groove ball bearing 15 through the pin shaft 26, the ball 25 is arranged below two end parts of the ultrasonic probe unit shell 23, and the ultrasonic probe unit cover plate 22 is arranged at the upper end of the ultrasonic probe unit shell 23; the cable 3 is connected with the PCB 4, the PCB 4 is connected with the core component 24 of the ultrasonic probe unit, and the PCB 4 is fixed in the cavity of the guide plate 13 of the scanning device and the cover plate 19 of the scanning device; four couplant joints 10 are installed on the guide plate 13 of the scanning device, and the couplant joints 10 are communicated with the ultrasonic probe unit 21 through pipelines.
In this embodiment, the scanning device 1 is used for installing the flexible probe 2 and realizing the movement of the flexible probe 2 on the curved surface workpiece 5 to be detected.
In this embodiment, the pre-pressure spring 11 is used to provide elastic force to realize the up-and-down displacement of the guide rod 14.
In this embodiment, the guide sleeve 12 is used for installing the pre-pressing spring 11 and the guide rod 14 to realize guiding.
In this embodiment, the guiding plate 13 of the scanning device is used for installing the guide sleeve 12 and the couplant joint 10.
In the present embodiment, the guide rod 14 and the deep groove ball bearing 15 are used to mount the ultrasonic probe unit 21.
In this embodiment, the rubber-coating wheel guide rod 16, the rubber-coating wheel 17 and the rubber-coating wheel seat 18 are used for realizing the sliding of the device on the curved surface workpiece 5 to be detected.
In this embodiment, the scanner cover plate 19 is used to protect other components mounted on the scanner guide plate 13.
In the embodiment, the cable 3 and the PCB 4 are used for communicating the flexible probe 2; the length of the cable 3 is 5m, and the sheath material of the cable 3 is PU.
In this embodiment, the flexible probe 2 is used to implement ultrasonic detection; the ultrasonic probe unit 21 consists of a ceramic piezoelectric wafer, a matching layer, a backing material, an ultrasonic probe shell, a couplant pipeline joint, a couplant pipeline and a connector; the material of the ultrasonic probe unit case 23 is SUS316.
The working principle of the flexible probe device for detecting the curved surface of the embodiment is as follows: the ultrasonic probe units are connected with the guide rod through the pin shaft and the deep groove ball bearing, so that each ultrasonic probe unit can deflect around the pin shaft at a certain angle and can move up and down along with the guide rod in a Z-axis manner, and further, the self-adaptive detection of curved surfaces with different curvatures is realized. 2 the cable wire is connected with the wafer of each ultrasonic probe unit through the PCB board in a switching mode, and after the other point of the cable wire is connected with the instrument through the connector, the instrument can control flexibility to carry out ultrasonic nondestructive testing on the workpiece.
The embodiment has the following beneficial effects:
1. the flexible probe is a combined phased array probe of a sectional type ultrasonic probe unit, and is characterized by being flexible and changeable in shape;
2. the ceramic piezoelectric wafer of each ultrasonic probe unit of the sectional type flexible probe can be a single crystal wafer, a double crystal wafer, a linear array wafer, an area array wafer and the like;
3. each ultrasonic probe unit of the sectional type flexible probe can rotate around a rotating point of the guide rod, and each ultrasonic probe unit can independently and elastically move up and down along the Z axis along with the corresponding guide rod, so that the shape of the flexible probe automatically changes along with the change of the curvature of the curved surface, the detection precision is ensured, and the detection efficiency is improved;
4. an elastic pre-pressing device is arranged in the scanning device, the elastic force of the elastic pre-pressing device acts on a guide rod connected with the ultrasonic probe units, so that the pressure between each ultrasonic probe unit and the workpiece to be measured is elastic pressure, the rigid abrasion between the flexible probe and the workpiece to be measured is reduced, a ball structure is arranged below each ultrasonic probe unit, the friction between the flexible probe and the workpiece to be measured is further reduced, the surface of the workpiece to be measured is protected from being abraded and scraping, and meanwhile, the service life of the flexible probe is prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A flexible probe device for detecting a curved surface is characterized by comprising a scanning device, a cable, a PCB (printed circuit board) and a flexible probe; the scanning device comprises a plurality of prepressing springs, a plurality of guide sleeves, a scanning device guide plate, a plurality of guide rods, a plurality of deep groove ball bearings, four rubber-coated wheel guide rods, four rubber-coated wheels, a scanning device cover plate and two rubber-coated wheel seats; the rubber coating wheel seat is fixedly provided with two rubber coating wheels, the rubber coating wheel guide rods are vertically fixed at two ends of the rubber coating wheel seat, and the top ends of the rubber coating wheel guide rods are vertically fixed at four corners of the scanning device guide plate; the guide sleeve is vertically fixed on the scanning device guide plate and penetrates through the scanning device guide plate, the top end of the guide rod is arranged at the lower end of the guide sleeve, the lower end of the prepressing spring is arranged at the upper end of the guide sleeve and is in contact with the top end of the guide rod, the upper end of the prepressing spring is fixed below the scanning device cover plate, the scanning device cover plate is fixed at the upper end of the scanning device guide plate, and the deep groove ball bearing is fixed at the bottom end of the guide rod; the flexible probe comprises a plurality of ultrasonic probe units arranged in parallel, each ultrasonic probe unit comprises an ultrasonic probe unit cover plate, an ultrasonic probe unit shell, an ultrasonic probe unit core component, a pin shaft and a ball, the ultrasonic probe unit core component is fixed in the ultrasonic probe unit shell, the lower end of the ultrasonic probe unit shell is fixedly connected with the deep groove ball bearing through the pin shaft, the ball is arranged below two end parts of the ultrasonic probe unit shell, and the ultrasonic probe unit cover plate is arranged at the upper end of the ultrasonic probe unit shell; the cable is connected with the PCB, the PCB is connected with the core component of the ultrasonic probe unit, and the PCB is fixed in the cavity of the scanning device guide plate and the scanning device cover plate; four couplant joints are mounted on a guide plate of the scanning device and communicated with the ultrasonic probe unit through pipelines.
2. The flexible probe device for detecting curved surfaces of claim 1, wherein the cable has a length of 5m, and the sheath of the cable is made of PU.
3. The flexible probe device for inspecting curved surfaces of claim 1, wherein said number of ultrasonic probe units is 16.
4. The flexible probe device for inspecting curved surfaces of claim 1, wherein the material of said ultrasonic probe unit housing is SUS316.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811893.2A CN115166058A (en) | 2022-07-11 | 2022-07-11 | Flexible probe device for detecting curved surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811893.2A CN115166058A (en) | 2022-07-11 | 2022-07-11 | Flexible probe device for detecting curved surface |
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| Publication Number | Publication Date |
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| CN115166058A true CN115166058A (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210811893.2A Pending CN115166058A (en) | 2022-07-11 | 2022-07-11 | Flexible probe device for detecting curved surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116359346A (en) * | 2023-05-30 | 2023-06-30 | 广东汕头超声电子股份有限公司 | Blade curved surface detection equipment based on chain type flexible probe |
-
2022
- 2022-07-11 CN CN202210811893.2A patent/CN115166058A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116359346A (en) * | 2023-05-30 | 2023-06-30 | 广东汕头超声电子股份有限公司 | Blade curved surface detection equipment based on chain type flexible probe |
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