CN112684000A - Eddy current detection device suitable for ball-type subassembly - Google Patents
Eddy current detection device suitable for ball-type subassembly Download PDFInfo
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- CN112684000A CN112684000A CN202110054155.3A CN202110054155A CN112684000A CN 112684000 A CN112684000 A CN 112684000A CN 202110054155 A CN202110054155 A CN 202110054155A CN 112684000 A CN112684000 A CN 112684000A
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- eddy current
- probe
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Abstract
The invention discloses a vortex detection device suitable for a spherical component, which comprises a base, wherein a rotating shaft is arranged on the base, the rotating shaft can rotate and lift under the driving of a driving mechanism, a positioning seat for mounting the spherical component is arranged at the upper end of the rotating shaft, a bracket in an arc structure is fixedly arranged on the base, telescopic vortex probes are distributed on the bracket, and the probe components of the telescopic vortex probes face to the center of the bracket and can move towards the direction close to or far away from the center of the bracket. The invention has the beneficial effects that: when the eddy current detection is carried out on the spherical sample, the device has the technical advantages of convenience in positioning and installation and high measuring efficiency. The rotating shaft and the probe assembly can both move in a telescopic mode along the axis where the rotating shaft and the probe assembly are located, the device can be suitable for detecting spherical samples of different sizes, and the universality is good.
Description
Technical Field
The invention relates to a vortex detection device, in particular to a vortex detection device suitable for a spherical component.
Background
The eddy current detection method is based on the electromagnetic induction principle, when a component to be detected is placed in an alternating magnetic field, induced current exists in the component to be detected, namely eddy current is generated, the eddy current changes due to the change of factors (such as conductivity, permeability, shape, size, defects and the like) of the component to be detected, and the detection method for judging the property and the state of the component to be detected by utilizing the phenomenon is called eddy current detection.
Eddy current testing is a very common non-destructive testing method, which has been widely used in many industrial fields. However, in the prior art, the technical problems of difficult positioning, inconvenient installation of the detector and low detection efficiency still exist for the detection of the ball-type component.
Disclosure of Invention
In view of this, the present invention provides an eddy current inspection apparatus suitable for a spherical component, so as to solve the technical problems of difficult positioning of the spherical component, inconvenient installation of a detector, and low detection efficiency.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides an eddy current testing device suitable for ball-type subassembly which the key lies in: the improved vortex flow measuring device comprises a base, a rotating shaft is installed on the base and can rotate and lift under the driving of a driving mechanism, a positioning seat used for installing a spherical assembly is arranged at the upper end of the rotating shaft, a support with an arc-shaped structure is fixedly installed on the base, telescopic vortex flow probes are distributed on the support, probe assemblies of the telescopic vortex flow probes face the circle center of the support and can move towards the direction close to or away from the circle center.
By adopting the structure, after the spherical component to be measured is placed on the positioning seat, the spherical component is lifted upwards by the lifting mechanism, so that the telescopic eddy current probe starts to measure the distance between the probe component and the surface of the spherical component, and when the distances between the probe components and the surface of the spherical component are equal, the spherical center of the spherical component is superposed with the circle center of the support. Then the spherical component is driven by the rotating shaft to rotate, and the probe component on the bracket can carry out eddy current detection on the spherical component.
Preferably, the method comprises the following steps: the support is of a semicircular structure. By adopting the structure, the telescopic eddy current probes are conveniently distributed and installed on the circumferential line.
Preferably, the method comprises the following steps: the telescopic eddy current probe comprises a shell fixedly mounted on the support, the probe assembly is mounted in the shell in a sliding mode, and a linear motor for driving the probe assembly to slide is arranged in the shell. By adopting the structure, the linear motor can control the probe assembly to do telescopic motion.
Preferably, the method comprises the following steps: the probe assembly is internally provided with a camera, an eddy current coil and a distance measuring probe. By adopting the structure, the camera is used for shooting the positioning point, the distance between the distance measuring probe assembly and the surface of the spherical sample is measured by the distance measuring probe, and the eddy current coil is used for eddy current detection of the sample.
Compared with the prior art, the invention has the beneficial effects that:
1. when the eddy current detection is carried out on the spherical sample, the device has the technical advantages of convenience in positioning and installation and high measuring efficiency.
2. The rotating shaft and the probe assembly can both move in a telescopic mode along the axis where the rotating shaft and the probe assembly are located, the device can be suitable for detecting spherical samples of different sizes, and the universality is good.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of a telescopic eddy current probe.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 and 2, the eddy current testing apparatus suitable for the spherical component structurally comprises a base 4, a rotating shaft 3 is mounted on the base 4, a positioning seat 3a is arranged at the upper end of the rotating shaft 3, and a lifting mechanism 3b and a rotating table 3c are arranged between the lower end of the rotating shaft 3 and the base 4, wherein the rotating table 3c is mounted on the lifting mechanism 3b, the spherical component 10 is mounted on the positioning seat 3a, the lifting mechanism 3b can drive the spherical component 10 to move up and down, and the rotating table 3c can drive the spherical component 10 to rotate.
The base 4 is also fixedly provided with a bracket 1 which is in an arc structure, in the embodiment, the specific structure of the bracket 1 is semicircular, four groups of telescopic eddy current probes 2 are distributed on the bracket, each telescopic eddy current probe 2 comprises a shell 2b fixedly arranged on the bracket 1 and a probe assembly 2a slidably arranged in the shell 2b, a linear motor 2c for driving the probe assembly 2a to slide is arranged in the shell 2b, the probe assembly 2a of each telescopic eddy current probe 2 faces the center of the bracket 1, the probe assembly 2a can move towards the direction close to or far away from the center of the bracket 1 under the driving of the linear motor 2c, a camera 2a1, an eddy current coil 2a2 and a distance measuring probe 2a3 are arranged in the probe assembly 2a, the base 4 is provided with a controller 5, the camera 2a1, the eddy current coil 2a2 and the distance measuring probe 2a3 are all electrically connected with the controller 5 through cables 6, the turntable 3c is also provided with a drive system, which is also electrically connected to the controller 5 via a cable 6.
As further shown in fig. 1, the installation process of the ball-type assembly 10 is as follows:
firstly, a spherical component 10 to be measured is placed on a positioning seat 3a, then the spherical component 10 is lifted upwards by a lifting mechanism 3b, so that the distance between a probe component 2a and the surface of the spherical component 10 is measured by the telescopic eddy current probe 2, when the distances between the probe components 2a and the surface of the spherical component 10 are equal, the center of a sphere of the spherical component 10 is coincided with the center of a circle of the support 1, and at the moment, the lifting mechanism 3b is locked to realize the positioning and installation of the spherical component 10. Finally driven by the linear motor 2 c. The probe assembly 2a extends and retracts outwards, approaches the surface of the ball-type assembly 10, and is locked after reaching a set distance value.
As shown in fig. 1 again, the detection process of the eddy current inspection apparatus is as follows:
after the spherical component 10 to be tested is placed on the rotating shaft, positioning lines a and positioning points b which are in number corresponding to the probe components 2a are marked on the surface of the spherical component 10, and the positioning points b are in one-to-one correspondence with the probe components 2a and are used for marking the position on the spherical component 10. After the marking is completed, the rotary table 3c drives the ball-type assembly 10 to rotate, and when the camera 2a1 on the probe assembly 2a captures an image of the positioning point b, the system coordinates are reset, the measurement is started, the measurement starts with the positioning point b as a starting point (zero point), the relative position of the probe assembly 2a on the surface of the ball-type assembly 10 is calculated by counting the rotation speed and time of the rotating shaft 3, and the eddy current detection value is recorded.
In this embodiment, the working coordinates of the spherical component 10 are longitude and latitude coordinates of the earth, the positioning line a is a 0-degree longitude line, the positioning point b on the positioning line a has a certain latitude value, and the spherical component 10 can be positioned on the surface through the longitude and latitude.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a vortex detection device suitable for ball-type subassembly which characterized in that: including base (4), install pivot (3) on base (4), this pivot (3) can be rotatory and go up and down under actuating mechanism drives, and its upper end is equipped with positioning seat (3a) that are used for installing ball-type subassembly (10), fixed mounting has support (1) that is the arc structure on base (4), it has telescopic vortex probe (2) to distribute on support (1), probe assembly (2a) of telescopic vortex probe (2) all towards the centre of a circle of support (1) to can move towards the direction that is close to or keeps away from this centre of a circle.
2. The eddy current testing device for ball-type assemblies as claimed in claim 1, wherein: the support (1) is of a semicircular structure.
3. The eddy current testing device for a ball-type assembly according to claim 1 or 2, wherein: telescopic eddy current probe (2) are including shell (2b) of fixed mounting on support (1), probe subassembly (2a) slidable mounting is equipped with gliding linear electric motor (2c) of drive probe subassembly (2a) in shell (2 b).
4. The eddy current testing device for a ball-type assembly according to claim 1 or 2, wherein: the probe assembly (2a) is internally provided with a camera (2a1), an eddy current coil (2a2) and a distance measuring probe (2a 3).
5. The eddy current testing device for a ball-type assembly according to claim 4, wherein: the base (4) is provided with a controller (5), and the controller (5) is electrically connected with each probe assembly (2a) through a cable (6).
6. The eddy current testing device for ball-type assemblies as claimed in claim 1, wherein: the rotating shaft (3) is rotatably installed on the base (4) through the rotating platform (3c), and the lifting mechanism (3b) is installed between the rotating platform (3c) and the base (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110054155.3A CN112684000A (en) | 2021-01-15 | 2021-01-15 | Eddy current detection device suitable for ball-type subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110054155.3A CN112684000A (en) | 2021-01-15 | 2021-01-15 | Eddy current detection device suitable for ball-type subassembly |
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| CN112684000A true CN112684000A (en) | 2021-04-20 |
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| CN202110054155.3A Pending CN112684000A (en) | 2021-01-15 | 2021-01-15 | Eddy current detection device suitable for ball-type subassembly |
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Citations (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4272781A (en) * | 1978-09-08 | 1981-06-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Nondestructive examining apparatus |
| DE3228382A1 (en) * | 1981-07-30 | 1983-02-17 | Shimadzu Corp., Kyoto | METHOD AND DEVICE FOR ELECTROMAGNETICALLY DETECTING FAULTS IN METAL OBJECTS |
| FR2696833A1 (en) * | 1992-10-14 | 1994-04-15 | Snecma | Device for supporting a probe for detecting and locating possible defects inside a bore. |
| US5510709A (en) * | 1993-09-27 | 1996-04-23 | General Electric Company | Eddy current surface inspection probe for aircraft fastener inspection, and inspection method |
| WO1998000229A1 (en) * | 1996-07-03 | 1998-01-08 | Dade Behring Inc. | Method and apparatus for vortex mixing using centrifugal force |
| CN1184934A (en) * | 1997-11-14 | 1998-06-17 | 清华大学 | Device for nondestructive detecting flaws on conductor ball surface |
| GB9824326D0 (en) * | 1998-11-06 | 1998-12-30 | Frank S Tubulars International | An object inspection unit and a method of inspecting an object |
| GB0117553D0 (en) * | 2001-03-21 | 2001-09-12 | Amatsuji Steel Ball Mfg Co Ltd | Inspection apparatus for surfaces of spheres |
| EP1621878A1 (en) * | 2004-07-23 | 2006-02-01 | General Electric Company | Apparatus for testing a component |
| JP2007114215A (en) * | 2002-10-25 | 2007-05-10 | Asahi Kasei Engineering Kk | Device for measuring thickness of vessel steel plate |
| US20080277265A1 (en) * | 2007-05-11 | 2008-11-13 | Plasco Energy Group, Inc. | Gas reformulation system comprising means to optimize the effectiveness of gas conversion |
| US20090102473A1 (en) * | 2007-10-22 | 2009-04-23 | Soshi Narishige | Eddy current testing method and eddy current testing apparatus |
| JP2010230354A (en) * | 2009-03-26 | 2010-10-14 | Honda Motor Co Ltd | Work hardness measuring instrument |
| US20100272240A1 (en) * | 2007-06-07 | 2010-10-28 | Georg Hafner | Device and method for the non-destructive testing of objects |
| JP2011007780A (en) * | 2009-05-22 | 2011-01-13 | Marktec Corp | Rotating eddy current flaw detection probe |
| CN102621219A (en) * | 2011-01-28 | 2012-08-01 | 通用电气检查技术有限公司 | A non-destructive test method for automatic fastener inspection |
| CN103487503A (en) * | 2013-09-26 | 2014-01-01 | 上海海事大学 | Rotating magnetic field eddy current detection probe |
| JP2014077764A (en) * | 2012-10-12 | 2014-05-01 | Tokyo Rigaku Kensa Kk | Eddy current flaw detection device |
| CN103792244A (en) * | 2014-03-04 | 2014-05-14 | 东北林业大学 | Wood nondestructive testing device capable of conducting imaging in real time at any angle |
| CN104142300A (en) * | 2014-06-30 | 2014-11-12 | 中国农业大学 | Automatic rotary positioning device applied to optical detection on round fruit and vegetable pesticide residues |
| CN204101506U (en) * | 2014-08-08 | 2015-01-14 | 合肥望远电子科技有限公司 | A kind of three axial curve motions being applicable to eddy current flaw detec |
| CN105158331A (en) * | 2015-10-23 | 2015-12-16 | 爱德森（厦门）电子有限公司 | Device and method for in-service partial vortex scanning imaging of small-diameter pipe |
| CN105784679A (en) * | 2016-03-08 | 2016-07-20 | 浙江大学 | Laser-induced breakdown spectroscopy sample room for detection of irregular samples |
| CN205580411U (en) * | 2016-04-29 | 2016-09-14 | 王尔奇 | Novel test table is examined to machinery instrument device |
| CN106018443A (en) * | 2016-07-08 | 2016-10-12 | 丹东华日理学电气股份有限公司 | Industrial CT detection device and method based on 3D sphere detection platform |
| CN207730707U (en) * | 2017-12-29 | 2018-08-14 | 上海天阳钢管有限公司 | It is a kind of detecting the eddy current probe detecting system of composite steel tube outer layer stainless steel |
| CN208068310U (en) * | 2018-01-27 | 2018-11-09 | 江阴兴澄特种钢铁有限公司 | A kind of robot device of eddy current sensor automatic telescopic control |
| CN109632943A (en) * | 2019-01-04 | 2019-04-16 | 南京维格无损检测有限公司 | A kind of high-precision vortex induction device suitable for wheel |
| CN209784261U (en) * | 2019-01-02 | 2019-12-13 | 盐城市裕达机械制造有限公司 | Flaw detection device |
| CN209911253U (en) * | 2019-05-09 | 2020-01-07 | 山东金池重工股份有限公司 | Steel ball surface detection device |
| CN111038154A (en) * | 2019-12-12 | 2020-04-21 | 杨志杰 | Device for carving surface of sphere |
| CN112098510A (en) * | 2020-09-03 | 2020-12-18 | 南京博克纳自动化***有限公司 | Steel pipe eddy current testing equipment |
| CN212255190U (en) * | 2020-06-22 | 2020-12-29 | 江西海利科技有限公司 | Eddy current flaw detection device |
-
2021
- 2021-01-15 CN CN202110054155.3A patent/CN112684000A/en active Pending
Patent Citations (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4272781A (en) * | 1978-09-08 | 1981-06-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Nondestructive examining apparatus |
| DE3228382A1 (en) * | 1981-07-30 | 1983-02-17 | Shimadzu Corp., Kyoto | METHOD AND DEVICE FOR ELECTROMAGNETICALLY DETECTING FAULTS IN METAL OBJECTS |
| US4507610A (en) * | 1981-07-30 | 1985-03-26 | Shimadzu Corporation | Apparatus for electromagnetically detecting flaws in metallic objects |
| FR2696833A1 (en) * | 1992-10-14 | 1994-04-15 | Snecma | Device for supporting a probe for detecting and locating possible defects inside a bore. |
| US5510709A (en) * | 1993-09-27 | 1996-04-23 | General Electric Company | Eddy current surface inspection probe for aircraft fastener inspection, and inspection method |
| WO1998000229A1 (en) * | 1996-07-03 | 1998-01-08 | Dade Behring Inc. | Method and apparatus for vortex mixing using centrifugal force |
| CN1184934A (en) * | 1997-11-14 | 1998-06-17 | 清华大学 | Device for nondestructive detecting flaws on conductor ball surface |
| GB9824326D0 (en) * | 1998-11-06 | 1998-12-30 | Frank S Tubulars International | An object inspection unit and a method of inspecting an object |
| GB0117553D0 (en) * | 2001-03-21 | 2001-09-12 | Amatsuji Steel Ball Mfg Co Ltd | Inspection apparatus for surfaces of spheres |
| US20020135756A1 (en) * | 2001-03-21 | 2002-09-26 | Mitsuhiro Matsuoka | Inspection apparatus for surfaces of spheres |
| JP2007114215A (en) * | 2002-10-25 | 2007-05-10 | Asahi Kasei Engineering Kk | Device for measuring thickness of vessel steel plate |
| EP1621878A1 (en) * | 2004-07-23 | 2006-02-01 | General Electric Company | Apparatus for testing a component |
| US20080277265A1 (en) * | 2007-05-11 | 2008-11-13 | Plasco Energy Group, Inc. | Gas reformulation system comprising means to optimize the effectiveness of gas conversion |
| US20100272240A1 (en) * | 2007-06-07 | 2010-10-28 | Georg Hafner | Device and method for the non-destructive testing of objects |
| US20090102473A1 (en) * | 2007-10-22 | 2009-04-23 | Soshi Narishige | Eddy current testing method and eddy current testing apparatus |
| JP2010230354A (en) * | 2009-03-26 | 2010-10-14 | Honda Motor Co Ltd | Work hardness measuring instrument |
| JP2011007780A (en) * | 2009-05-22 | 2011-01-13 | Marktec Corp | Rotating eddy current flaw detection probe |
| CN102621219A (en) * | 2011-01-28 | 2012-08-01 | 通用电气检查技术有限公司 | A non-destructive test method for automatic fastener inspection |
| JP2014077764A (en) * | 2012-10-12 | 2014-05-01 | Tokyo Rigaku Kensa Kk | Eddy current flaw detection device |
| CN103487503A (en) * | 2013-09-26 | 2014-01-01 | 上海海事大学 | Rotating magnetic field eddy current detection probe |
| CN103792244A (en) * | 2014-03-04 | 2014-05-14 | 东北林业大学 | Wood nondestructive testing device capable of conducting imaging in real time at any angle |
| CN104142300A (en) * | 2014-06-30 | 2014-11-12 | 中国农业大学 | Automatic rotary positioning device applied to optical detection on round fruit and vegetable pesticide residues |
| CN204101506U (en) * | 2014-08-08 | 2015-01-14 | 合肥望远电子科技有限公司 | A kind of three axial curve motions being applicable to eddy current flaw detec |
| CN105158331A (en) * | 2015-10-23 | 2015-12-16 | 爱德森（厦门）电子有限公司 | Device and method for in-service partial vortex scanning imaging of small-diameter pipe |
| CN105784679A (en) * | 2016-03-08 | 2016-07-20 | 浙江大学 | Laser-induced breakdown spectroscopy sample room for detection of irregular samples |
| CN205580411U (en) * | 2016-04-29 | 2016-09-14 | 王尔奇 | Novel test table is examined to machinery instrument device |
| CN106018443A (en) * | 2016-07-08 | 2016-10-12 | 丹东华日理学电气股份有限公司 | Industrial CT detection device and method based on 3D sphere detection platform |
| CN207730707U (en) * | 2017-12-29 | 2018-08-14 | 上海天阳钢管有限公司 | It is a kind of detecting the eddy current probe detecting system of composite steel tube outer layer stainless steel |
| CN208068310U (en) * | 2018-01-27 | 2018-11-09 | 江阴兴澄特种钢铁有限公司 | A kind of robot device of eddy current sensor automatic telescopic control |
| CN209784261U (en) * | 2019-01-02 | 2019-12-13 | 盐城市裕达机械制造有限公司 | Flaw detection device |
| CN109632943A (en) * | 2019-01-04 | 2019-04-16 | 南京维格无损检测有限公司 | A kind of high-precision vortex induction device suitable for wheel |
| CN209911253U (en) * | 2019-05-09 | 2020-01-07 | 山东金池重工股份有限公司 | Steel ball surface detection device |
| CN111038154A (en) * | 2019-12-12 | 2020-04-21 | 杨志杰 | Device for carving surface of sphere |
| CN212255190U (en) * | 2020-06-22 | 2020-12-29 | 江西海利科技有限公司 | Eddy current flaw detection device |
| CN112098510A (en) * | 2020-09-03 | 2020-12-18 | 南京博克纳自动化***有限公司 | Steel pipe eddy current testing equipment |
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