CN204694676U - A kind of fastener detecting device - Google Patents
A kind of fastener detecting device Download PDFInfo
- Publication number
- CN204694676U CN204694676U CN201520217725.6U CN201520217725U CN204694676U CN 204694676 U CN204694676 U CN 204694676U CN 201520217725 U CN201520217725 U CN 201520217725U CN 204694676 U CN204694676 U CN 204694676U
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- China
- Prior art keywords
- coil
- detecting device
- securing member
- copper bucket
- fastener detecting
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model relates to a kind of fastener detecting device, comprises pedestal, and described pedestal is provided with the coil of two mutual inductions in opposite directions, and the copper bucket preventing coil magnetic field described in two from leaking respectively, is equipped with the back up pad of accommodating described coil in copper bucket described in two.The electromagnetic eddy that fastener detecting device of the present utility model utilizes coil to produce carries out inside flaw detection to securing member, effectively can filter out the defective products that there is damage inside, thus realize the high efficient and reliable that securing member detects, avoid traditional detection method and only carry out the deficiency that external detection ignores inner flaw detection.
Description
Technical field
The utility model relates to a kind of pick-up unit of securing member, particularly relates to a kind of device whether damaged by electromagnetic eddy technology for detection securing member inside.
Background technology
At present, what securing member detected main employing is traditional manual type.Manual detection not only labour intensity is large, and production efficiency is low, and the data measured may exist larger error, easily cause defective products artificially in addition.The eighties in 20th century, prediction was once done on the basis of investigation by NBS: 80% of industrial detection work from now on will be completed by vision detection technology.Through development for many years, mechanical vision inspection technology all obtains significant progress at home and abroad, and the fastener detecting device based on machine vision has played very large effect aborning.For rivet, modern riveting technology is just being widely used in the occasions such as aviation, automobile, high ferro, owing to using singularity, require entirely to examine the size of rivet and defect, and traditional detection cannot meet the requirement to precision, and work efficiency is lower.Now requires increasingly stringent in the field such as Aero-Space and auto manufacturing to the securing member of rivet and so on, therefore filter out meet user demand securing member sometimes or even concerning the major issue of life safety.Other are needed to use field such as the industries such as mobile phone electronic, boats and ships, building of high precision securing member to be also of great importance simultaneously.
Nowadays along with the maturation of machine vision hardware aspect, the organization plan that novel control detects also constantly occurs, as patent CN200480038574.2 fastener inspection system.In order to meet the high efficiency for securing member detection in commercial production, propose rotating disc type fastener detecting device, patent No. CN201420402998.3; Detection scheme for securing member outer damage is many in addition, as patent No. CN201320050310.5 rivet detection machine, CN201120390626 rivet detection machine.But above scheme, just detects for securing member external dimensions and shape, be utilize the length, circularity etc. of CCD imaging technique to securing member to carry out preliminary detection.And in actual production, due to the processing technology meeting damaged material structure of securing member, the damage of securing member not only can occur in outside, the damage of quite a few is also had to occur in inside.But for now, adopt a kind of method of high-efficiency high-accuracy to carry out the device also urgently utility model of the inside flaw detection of securing member.Whether the CCD Vision Builder for Automated Inspection of current employing can only detect securing member outside has damage, but has this kind of pick-up unit for damage and the good securing member of outer shape to detect for inside.
At present, conventional securing member is as rivet, and when riveting, rivet at the deformed under pressure of several tons and fastening, if the existing defects of rivet own, is easy to cause riveting unsuccessfully, or in use ruptures in advance, cause the accident.Therefore, extremely important to the detection of securing member inner structure.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of fastener detecting device based on electromagnetic eddy induction, to solve the problem that existing pick-up unit cannot detect securing member internal injury.
Fastener detecting device of the present utility model, comprises pedestal, and described pedestal is provided with two inductive coils in opposite directions, and the copper bucket preventing coil magnetic field described in two from leaking respectively, is equipped with the back up pad of accommodating described coil in copper bucket described in two.
Further, described pedestal comprises two cross walls be arranged in parallel, and with two cross walls longitudinal wall connected vertically, copper bucket described in two is tightly connected with cross wall described in two respectively.
Further, sealed by epoxy resin between the diapire of described copper bucket and described cross wall.
Further, the chassis that the diapire that described back up pad comprises discoid and described copper bucket is connected, and the ring wall that be vertically connected on it on coaxial with described chassis, described ring wall is circumferentially with the annular groove of accommodating described coil.
Further, the diapire of described cross wall, epoxy resin, copper bucket and chassis are equipped with the cable-through hole run through mutually.
Further, the diapire of chassis, copper bucket described in two and epoxy resin are all separately fixed on cross wall described in two by through bolt.
Further, described in two, the radius of coil is equal, and spacing described in two between coil is equal to its radius to form helmholtz coil.
By such scheme, fastener detecting device of the present utility model uses electromagnetic eddy to carry out inside flaw detection, effectively can filter out the defective products that there is damage inside, thus realize the high efficient and reliable that securing member detects, avoid traditional detection method and only carry out the deficiency that external detection ignores inner flaw detection.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of instructions, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of back up pad in the utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
See Fig. 1 and Fig. 2, a kind of fastener detecting device described in the utility model one preferred embodiment, comprises pedestal, and this pedestal is C type, comprises two cross walls be arranged in parallel 11, and with two cross walls 11 longitudinal wall 12 connected vertically.Pedestal is provided with the coil 20 of two mutual inductions in opposite directions, and the copper bucket 30 preventing two coil 20 magnetic fields from leaking respectively, namely copper bucket 30 covers the outside of coil 20, two bronze medal buckets 30 are tightly connected with two cross walls 11 respectively, specifically sealed between the diapire 31 of copper bucket 30 and cross wall 11 by epoxy resin 50, utilize the insulativity of epoxy resin coil 20 and pedestal to be insulated.The back up pad 40 of accommodating coil 20 is equipped with in two bronze medal buckets 30.Concrete, back up pad 40 comprises the discoid chassis 41 be connected with the diapire 31 of copper bucket 30, and the ring wall 42 that be vertically connected on it on coaxial with chassis 41, and ring wall 42 is circumferentially with the annular groove 43 of accommodating coil 20.Preferably, the diapire 31 of two chassis 41, copper bucket 30 and epoxy resin 50 are all separately fixed on two cross walls 11 by through bolt 70.
For convenience of the lead-in wire of coil 20 is connected with outside electrical equipment, the diapire 31 and chassis 41 of cross wall 11, epoxy resin 50, copper bucket 30 are equipped with the cable-through hole 60 run through mutually, the lead-in wire of coil 20 passes from cable-through hole 60 and is connected with outside electrical equipment, in the utility model, coil 20 is connected with impedance measuring equipment.
The radius of two coils 20 in the utility model is equal and spacing between two coils 20 is equal to its radius to form helmholtz coil, utilizes helmholtz coil can form uniform magnetic field in pedestal.
The utility model utilizes two coils 20 to produce electromagnetic induction, and its principle detected is eddy current effect and magnetic effect.For non magnetic securing member mainly eddy current effect, be that eddy current effect and magnetic effect work simultaneously for magnetic fastener.When securing member enters in the magnetic field of helmholtz coil generation as rivet, if there is crackle rivet inside, the impedance of coil can be caused to change, use impedance measuring equipment to measure this change, just can know the bulk properties of rivet.
Principle of work of the present utility model is as follows:
Helmholtz coil in the utility model is connected with impedance measuring equipment, because the helmholtz coil in the utility model is surrounded by copper bucket, copper bucket can prevent magnetic field from leaking, two helmholtz coils are arranged in opposite directions, namely two helmholtz coils to lay respectively at directly over detected member and immediately below, and the spacing of upper and lower two helmholtz coils is equal with helmholtz coil radius size.When securing member passes through the position of helmholtz coil, there is the securing member of damage can produce different impedances from undamaged securing member, by making comparisons between the qualified impedance area of the impedance recorded and setting, if record impedance in interval of acceptance, securing member is qualified, otherwise is then judged to be the substandard products of internal injury.
When using pick-up unit of the present utility model detection securing member inside whether to have damage, existing vision inspection apparatus can be coordinated to detect the inside and outside of securing member together, and to form online detection system, both are by synchronizing signal collaborative work.Concrete, carried by connecting gear by securing member, when securing member enters vision inspection apparatus place, trigger sensor, controls CCD camera and carries out optical detection to securing member collection image; When securing member enters in pick-up unit of the present utility model with connecting gear, pass through coil, electromagnetic eddy effect is used to carry out inside flaw detection, when electromagnetic eddy nondestructive examination, due to the measuring error that site error causes, can be revised by the result of vision-based detection, filter out qualified securing member finally by topworks, reject underproof securing member, thus the outside completed securing member and inner detection.
Pick-up unit application eddy current effect of the present utility model carries out the advantage of detecting a flaw compared with other detection mode and is:
1) fine crack and various defect can be detected;
2) detection speed is fast, and obtain testing result immediately, efficiency is high;
3) instrument volume is little, is convenient for carrying;
4) only need to carry out little preliminary work before detecting;
5) detection probe does not need to contact measurand;
6) conductive fastener of various shape and size complexity can be detected.
The above is only preferred implementation of the present utility model; be not limited to the utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (7)
1. a fastener detecting device, is characterized in that: comprise pedestal, and described pedestal is provided with two inductive coils in opposite directions, and the copper bucket preventing coil magnetic field described in two from leaking respectively, is equipped with the back up pad of accommodating described coil in copper bucket described in two.
2. fastener detecting device according to claim 1, is characterized in that: described pedestal comprises two cross walls be arranged in parallel, and with two cross walls longitudinal wall connected vertically, copper bucket described in two is tightly connected with cross wall described in two respectively.
3. fastener detecting device according to claim 2, is characterized in that: sealed by epoxy resin between the diapire of described copper bucket and described cross wall.
4. fastener detecting device according to claim 3, it is characterized in that: the chassis that the diapire that described back up pad comprises discoid and described copper bucket is connected, and the ring wall that be vertically connected on it on coaxial with described chassis, described ring wall is circumferentially with the annular groove of accommodating described coil.
5. fastener detecting device according to claim 4, is characterized in that: the diapire of described cross wall, epoxy resin, copper bucket and chassis are equipped with the cable-through hole run through mutually.
6. fastener detecting device according to claim 5, is characterized in that: diapire and the epoxy resin of chassis, copper bucket described in two are all separately fixed on cross wall described in two by through bolt.
7. the fastener detecting device according to any one of claim 1 to 6, is characterized in that: described in two, the radius of coil is equal, and spacing described in two between coil is equal to its radius to form helmholtz coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217725.6U CN204694676U (en) | 2015-04-13 | 2015-04-13 | A kind of fastener detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217725.6U CN204694676U (en) | 2015-04-13 | 2015-04-13 | A kind of fastener detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204694676U true CN204694676U (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520217725.6U Withdrawn - After Issue CN204694676U (en) | 2015-04-13 | 2015-04-13 | A kind of fastener detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204694676U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807880A (en) * | 2015-04-13 | 2015-07-29 | 苏州大学 | Fastener detection device |
| CN106383167A (en) * | 2016-10-31 | 2017-02-08 | 天津因科新创科技有限公司 | Electromagnetic nondestructive testing device |
-
2015
- 2015-04-13 CN CN201520217725.6U patent/CN204694676U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807880A (en) * | 2015-04-13 | 2015-07-29 | 苏州大学 | Fastener detection device |
| CN106383167A (en) * | 2016-10-31 | 2017-02-08 | 天津因科新创科技有限公司 | Electromagnetic nondestructive testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151007 Effective date of abandoning: 20180330 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20151007 Effective date of abandoning: 20180330 |