CN103868989B - A kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device and method - Google Patents
A kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device and method Download PDFInfo
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- CN103868989B CN103868989B CN201410124914.9A CN201410124914A CN103868989B CN 103868989 B CN103868989 B CN 103868989B CN 201410124914 A CN201410124914 A CN 201410124914A CN 103868989 B CN103868989 B CN 103868989B
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Abstract
The invention discloses a kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device and method, based on EDDY CURRENT principle, design a drum-shaped eddy current testing device, including cylinder blanket, pen type eddy current probe, eddy current testing instrument, contact edge gap by the rivet nut head of detection self-plugging rivet with multiple layer metal external surface of structural member, judge whether have gap between multiple layer metal component, assessment rivet clasp degree, efficiently solves a rivet clasp quality evaluation difficult problem for the multiple layer metal component using self-plugging rivet riveting.
Description
Technical field
The present invention relates to a kind of the cannot-harm-detection device and method, particularly relate to a kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device and method.
Background technology
Self-plugging rivet is the rivet of a class blind riveting, and specific purpose tool-hand riveter must be used to rivet.During riveting, rivet mandrel is pulled by special riveting gun, makes rivet body expand, and plays riveting effect.Self-plugging rivet is particularly well-suited to inconvenience and uses the riveting occasion of conventional rivets (conventional rivets must rivet from two sides), is widely used on the multiple layer metal components such as building, automobile, boats and ships, aircraft, machine.Materials processing problem due to multiple layer metal component, the problem that surface irregularity easily occurs, surface irregularity will cause in riveting, there is gap in faying face between multiple layer metal component, cannot completely closely combine by rivet clasp, for the product that rivet clasp prescription is higher, security-hidden trouble will be caused.Ultrasonic penetration detection method is commonly used for detecting the riveting quality of multiple layer metal component, will detect with the two sides that ultrasonic acceptance probe is placed in multiple layer metal component by ultrasound emission probe, but for using the multiple layer metal component of self-plugging rivet riveting, due to its structure problem, can only rivet from one side, it is impossible to the two sides that ultrasound emission and receiving transducer are placed in multiple layer metal component is detected.
Summary of the invention
It is an object of the invention to overcome the deficiency of prior art, a kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device and method of design, based on EDDY CURRENT principle, design a drum-shaped eddy current testing device, contact edge gap by the rivet nut head of detection self-plugging rivet with multiple layer metal external surface of structural member, judge whether to have between multiple layer metal component gap, assess rivet clasp degree.
The technical solution adopted for the present invention to solve the technical problems is: a kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device, including cylinder blanket, pen type eddy current probe, eddy current testing instrument, it is characterized in that: there is flat-bottom hole in described cylinder blanket bottom center, flat-bottom hole diameter is equal to the rivet nut head external diameter of self-plugging rivet；Described pen type eddy current probe is embedded in the cylinder blanket around flat-bottom hole, on the orifice edge line visiting the flat-bottom hole that point is positioned at cylinder blanket of pen type eddy current probe；Pen type eddy current probe is connected with eddy current testing instrument signal output part by probe wire.A kind of multiple layer metal component self-plugging rivet rivet clasp degree assessment method, it is characterized in that: assessment is according to being, self-plugging rivet rivet clasp is on multiple layer metal component, when rivet clasp degree is intact, combine closely between multiple layer metal component, faying face gapless, the rivet nut head of self-plugging rivet combines closely with multiple layer metal external surface of structural member, contact edge gapless；When rivet clasp degree is bad, the faying face of multiple layer metal component has gap, and the rivet nut head of self-plugging rivet and the contact edge of multiple layer metal external surface of structural member also have gap；According to this assessment foundation, using eddy current detection method, by the gap of the rivet nut head of detection self-plugging rivet with the contact edge of multiple layer metal external surface of structural member, assessment judges the rivet clasp degree of multiple layer metal component, and detecting step is divided into calibration process and actual measurement process,
Calibration process is,
A. by the rivet nut head of flat for cylinder blanket port lid self-plugging rivet in the intact multiple layer metal component standard test block of rivet clasp, the pen type eddy current probe in cylinder blanket visit point be close to rivet nut head with on the contact edge of multiple layer metal external surface of structural member；
B. arranging eddy current testing instrument, set up eddy current signal equilibrium point, eddy current testing signal is a point, and eddy current testing signal point is positioned in equilibrium point；
C. rotational circle cylindrical outer cover, pen type eddy current probe spy point moves along the contact edge of rivet nut head with multiple layer metal external surface of structural member, owing to the rivet nut head in the multiple layer metal component standard test block that rivet clasp is intact is combined closely with multiple layer metal external surface of structural member, contact edge gapless, so in cylinder blanket rotary course, eddy current testing signal point will be always positioned in equilibrium point；
Actual measurement process is,
D. by the rivet nut head of flat for cylinder blanket port lid self-plugging rivet on tested multiple layer metal component, the pen type eddy current probe in cylinder blanket visit point be close to rivet nut head with on the contact edge of multiple layer metal external surface of structural member；
E. rotational circle cylindrical outer cover, pen type eddy current probe spy point moves along the contact edge of rivet nut head with multiple layer metal external surface of structural member；
F. eddy current testing signal is observed, when eddy current testing signal is always a point, and when being always positioned in equilibrium point, then explanation rivet nut head is combined closely with multiple layer metal external surface of structural member, contact edge gapless, it is determined that also combine closely between multiple layer metal component, faying face gapless；When eddy current testing signal deviates equilibrium point, when noise signal occurs, then explanation rivet nut head is not combined closely with multiple layer metal external surface of structural member, contact edge has gap, gap to cause vortex field to change, and gap noise signal occurs in the eddy current testing signal of pen type eddy current probe collection, gap is the biggest, gap noise signal is the biggest, judges according to this not combine closely between multiple layer metal component, and faying face has gap.
The invention has the beneficial effects as follows and devise a kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device and method, based on EDDY CURRENT principle, design a drum-shaped eddy current testing device, contact edge gap by the rivet nut head of detection self-plugging rivet with multiple layer metal external surface of structural member, judge whether have gap between multiple layer metal component, assessment rivet clasp degree, efficiently solves a rivet clasp quality evaluation difficult problem for the multiple layer metal component using self-plugging rivet riveting.
Below in conjunction with embodiment, the present invention is described in further detail, but a kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device and method of the present invention is not limited to embodiment.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the device cross-sectional view of the embodiment of the present invention.
Fig. 2 is the device three dimensional structure schematic diagram of the embodiment of the present invention.
Fig. 3 is the multiple layer metal component generalized section that the rivet clasp quality of the embodiment of the present invention is intact.
Fig. 4 is the multiple layer metal component generalized section of the rivet clasp poor quality of the embodiment of the present invention.
Fig. 5 is the calibration process schematic diagram of the embodiment of the present invention.
Fig. 6 is the actual measurement process schematic of the embodiment of the present invention.
In figure, 1.
Cylinder blanket, 10. flat-bottom hole；2. pen type eddy current probe, the spy point of 20. pen type eddy current probes, 3.
Eddy current testing instrument, 4. rivet nut head, 5.
Multiple layer metal component, the faying face between 50. multiple layer metal components, 6.
Rivet nut head and multiple layer metal external surface of structural member contact edge, 7.
Eddy current testing signal point, 8. gap noise signal.
Detailed description of the invention
In embodiment shown in Fig. 1, Fig. 2, a kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device, including cylinder blanket 1, pen type eddy current probe 2, eddy current testing instrument 3, it is characterized in that: there is flat-bottom hole 10 in described cylinder blanket 1 bottom center, flat-bottom hole 10 diameter is equal to rivet nut 4 external diameter of self-plugging rivet；Described pen type eddy current probe 2 is embedded in the cylinder blanket 1 around flat-bottom hole 10, on the orifice edge line visiting point 20 flat-bottom hole 10 being positioned at cylinder blanket 1 of pen type eddy current probe 2；Pen type eddy current probe 2 is connected with eddy current testing instrument 3 signal output part by probe wire.
In embodiment shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of multiple layer metal component self-plugging rivet rivet clasp degree assessment method, assessment is according to being, self-plugging rivet rivet clasp is on multiple layer metal component 5, when rivet clasp degree is intact, combine closely between multiple layer metal component 5, faying face 50 gapless, the rivet nut 4 of self-plugging rivet is combined closely with multiple layer metal component 5 outer surface, contact edge 6 gapless；When rivet clasp degree is bad, the faying face 50 of multiple layer metal component 5 has gap, and the rivet nut 4 of self-plugging rivet also has gap with the contact edge 6 of multiple layer metal component 5 outer surface；According to this assessment foundation, using eddy current detection method, by the gap of the rivet nut 4 of detection self-plugging rivet with the contact edge 6 of multiple layer metal component 5 outer surface, assessment judges the rivet clasp degree of multiple layer metal component 5, and detecting step is divided into calibration process and actual measurement process,
Calibration process is,
A. cylinder blanket 1 flat-bottom hole 10 is covered in the rivet nut 4 of the self-plugging rivet in intact multiple layer metal component 5 reference block of rivet clasp, the pen type eddy current probe 2 in cylinder blanket 1 visit point 20 be close to rivet nut 4 with on the contact edges 6 of multiple layer metal component 5 outer surface；
B. arranging eddy current testing instrument 3, set up eddy current signal equilibrium point, eddy current testing signal is a point, and eddy current testing signal point 7 is positioned in equilibrium point；
C. rotational circle cylindrical outer cover 1, pen type eddy current probe 2 spy point 20 moves along the contact edge 6 of rivet nut 4 with multiple layer metal component 5 outer surface, owing to the rivet nut 4 in multiple layer metal component 5 reference block that rivet clasp is intact is combined closely with multiple layer metal component 5 outer surface, contact edge 6 gapless, so in cylinder blanket 1 rotary course, eddy current testing signal point 7 will be always positioned in equilibrium point；
Actual measurement process is,
D. being covered by cylinder blanket 1 flat-bottom hole 10 in the rivet nut 4 of the self-plugging rivet on tested multiple layer metal component 5, the pen type eddy current probe 2 in cylinder blanket 1 is visited point 20 and is close on the contact edge 6 of rivet nut 4 and multiple layer metal component 5 outer surface；
E. rotational circle cylindrical outer cover 1, pen type eddy current probe 2 spy point 20 moves along the contact edge 6 of rivet nut 4 with multiple layer metal component 5 outer surface；
F. eddy current testing signal is observed, when eddy current testing signal is always a point, and when being always positioned in equilibrium point, then explanation rivet nut 4 is combined closely with multiple layer metal component 5 outer surface, contact edge 6 gapless, it is determined that also combine closely between multiple layer metal component 5, faying face 50 gapless；When eddy current testing signal deviates equilibrium point, when noise signal 8 occurs, then explanation rivet nut 4 is not combined closely with multiple layer metal component 5 outer surface, contact edge 6 has gap, gap to cause vortex field to change, and gap noise signal 8 occurs in the eddy current testing signal that pen type eddy current probe 2 gathers, gap is the biggest, gap noise signal 8 is the biggest, judges according to this not combine closely between multiple layer metal component 5, and faying face 50 has gap.
Above-described embodiment is only used for further illustrating a kind of multiple layer metal component self-plugging rivet rivet clasp scale evaluation device and method of the present invention; but invention is not limited to embodiment; every any simple modification, equivalent variations and modification made above example according to the technical spirit of the present invention, each falls within the protection domain of technical solution of the present invention.
Claims (2)
1. a multiple layer metal component self-plugging rivet rivet clasp scale evaluation device, including cylinder blanket, pen type eddy current probe, eddy current testing instrument, it is characterized in that: there is flat-bottom hole in described cylinder blanket bottom center, flat-bottom hole diameter is equal to the rivet nut head external diameter of self-plugging rivet；Described pen type eddy current probe is embedded in the cylinder blanket around flat-bottom hole, on the orifice edge line visiting the flat-bottom hole that point is positioned at cylinder blanket of pen type eddy current probe；Pen type eddy current probe is connected with eddy current testing instrument signal output part by probe wire.
2. a multiple layer metal component self-plugging rivet rivet clasp degree assessment method, it is characterized in that: assessment is according to being, self-plugging rivet rivet clasp is on multiple layer metal component, when rivet clasp degree is intact, combine closely between multiple layer metal component, faying face gapless, the rivet nut head of self-plugging rivet combines closely with multiple layer metal external surface of structural member, contact edge gapless；When rivet clasp degree is bad, the faying face of multiple layer metal component has gap, and the rivet nut head of self-plugging rivet and the contact edge of multiple layer metal external surface of structural member also have gap；According to this assessment foundation, using eddy current detection method, by the gap of the rivet nut head of detection self-plugging rivet with the contact edge of multiple layer metal external surface of structural member, assessment judges the rivet clasp degree of multiple layer metal component, and detecting step is divided into calibration process and actual measurement process,
Calibration process is,
A. by the rivet nut head of flat for cylinder blanket port lid self-plugging rivet in the intact multiple layer metal component standard test block of rivet clasp, the pen type eddy current probe in cylinder blanket visit point be close to rivet nut head with on the contact edge of multiple layer metal external surface of structural member；
B. arranging eddy current testing instrument, set up eddy current signal equilibrium point, eddy current testing signal is a point, and eddy current testing signal point is positioned in equilibrium point；
C. rotational circle cylindrical outer cover, pen type eddy current probe spy point moves along the contact edge of rivet nut head with multiple layer metal external surface of structural member, owing to the rivet nut head in the multiple layer metal component standard test block that rivet clasp is intact is combined closely with multiple layer metal external surface of structural member, contact edge gapless, so in cylinder blanket rotary course, eddy current testing signal point will be always positioned in equilibrium point；
Actual measurement process is,
D. by the rivet nut head of flat for cylinder blanket port lid self-plugging rivet on tested multiple layer metal component, the pen type eddy current probe in cylinder blanket visit point be close to rivet nut head with on the contact edge of multiple layer metal external surface of structural member；
E. rotational circle cylindrical outer cover, pen type eddy current probe spy point moves along the contact edge of rivet nut head with multiple layer metal external surface of structural member；
F. eddy current testing signal is observed, when eddy current testing signal is always a point, and when being always positioned in equilibrium point, then explanation rivet nut head is combined closely with multiple layer metal external surface of structural member, contact edge gapless, it is determined that also combine closely between multiple layer metal component, faying face gapless；When eddy current testing signal deviates equilibrium point, when noise signal occurs, then explanation rivet nut head is not combined closely with multiple layer metal external surface of structural member, contact edge has gap, gap to cause vortex field to change, and gap noise signal occurs in the eddy current testing signal of pen type eddy current probe collection, gap is the biggest, gap noise signal is the biggest, judges according to this not combine closely between multiple layer metal component, and faying face has gap.
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| CN106370724B (en) * | 2016-11-22 | 2019-09-03 | 中国航空工业集团公司北京航空材料研究院 | It is a kind of to be vortexed the probe apparatus and checking method that detect automatically for aviation disk ring part |
| DE102018215327B4 (en) * | 2018-09-10 | 2022-12-22 | Technische Universität Dresden | Device and method for non-destructive testing of stud welds |
| CN109298069B (en) * | 2018-11-23 | 2022-03-29 | 上海科技大学 | Method and device for rapidly detecting multilayer metal structure, equipment and storage medium |
| CN111895901B (en) * | 2020-08-31 | 2021-12-21 | 爱德森（厦门）电子有限公司 | Method and system device for detecting gap between ferromagnetic and non-ferromagnetic metal plates |
| CN113340985A (en) * | 2021-05-17 | 2021-09-03 | 中车青岛四方机车车辆股份有限公司 | Eddy current detection probe |
| CN115290747A (en) * | 2022-08-05 | 2022-11-04 | 西安热工研究院有限公司 | Eddy current detection device for metal disc type component and using method thereof |
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