CN104359604B - Machine tool assembly combing face stress distribution measuring thin film, system and method - Google Patents
Machine tool assembly combing face stress distribution measuring thin film, system and method Download PDFInfo
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- CN104359604B CN104359604B CN201410624032.9A CN201410624032A CN104359604B CN 104359604 B CN104359604 B CN 104359604B CN 201410624032 A CN201410624032 A CN 201410624032A CN 104359604 B CN104359604 B CN 104359604B
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Abstract
The invention discloses a machine tool assembly combing face stress distribution measuring thin film, system and method. A marking line consistent with an extending line, on an adjacent side face, of a stress contour line, k stress collecting sensors arranged on the marking line, and a positioning unit accurately positioning the measuring thin film on the adjacent side face are arranged on the measuring thin film. The measuring system comprises the measuring thin film, a storage module and a man-machine interaction module. The measuring method includes the steps of measuring thin film selection, measuring thin film positioning and pasting, stress data collection, measuring data storage, combining face geometric structure drawing and stress distribution display. Stress distribution of an assembly combining face is determined by pasting the measuring thin film on the adjacent side face of the machine tool assembly combining face according to a measured stress value of the measuring thin film, so that the measuring method is simple and suitable for realtime monitoring of stress of the machine tool combining face in the process of mass production.
Description
Technical field
The present invention relates to lathe alignment measurement technical field, it is thin that specially a kind of lathe is fitted to each other face stress distribution measurement
Film, system and method.
Background technology
Patents disclose and are fitted to each other stress distribution measuring method, but mainly pass through to insert pressure in the face of being fitted to each other
Thin film sensor or pressure sensitive film carry out direct measurement.Patent cn201983892u discloses a kind of threaded tightening force and connected piece
The test device of pressure distribution between faying face, including being arranged on bolt head, for measuring the gasket type pressure of bolt pretightening
Sensor is for measuring the pressure film sensor of faying face stress distribution, thin for showing gasket type pressure transducer, pressure
The oscillograph of film sensors waveform, for gathering gasket type pressure transducer, computer of pressure film sensor signal etc..
The lower lathe of application pressure-sensitive paper test different pretightning force effect is fitted to each other face stress distribution law process and finds: assembling
Faying face stress contour has " geometric properties stability " feature, that is, in the case of load active position and direction are constant, with
Magnitude of load changes, and each contour numerical value is with load significant changes, but joint portion upper stress equivalence wire shaped, position is relatively steady
Fixed.According to this rule, draw after faying face stress contour figure for benchmark pretightning force, be then equivalent to acquisition faying face stress and divide
Cloth grown form, as long as determining the numerical value of each stress contour under the effect of different size load, then can determine under respective loads
Be fitted to each other face stress distribution.And the Stress Transfer in assembly has continuity Characteristics, in joint portion, adjoining edge is not sent out
In the case of raw stress raisers, some stress contours on faying face necessarily have part to extend to face on side.Known
In faying face stress contour morphological basis, side relevant position stress is faced by test, then can achieve and be fitted to each other face stress
Distribution measures indirectly.
Implement in the indirect measurement process of faying face stress distribution, need to solve following two aspect key issues: (1) stress is surveyed
Examination sensor is accurately arranged in stress contour on the extension line on adjacent side；(2) face side stress information according to record,
Obtain faying face stress distribution.Stress contour is sightless, realizes visible information gathering point and sightless stress field
Form is unified, and can solidify stress field shape information on the basis of being fully understood by faying face and facing side stress distribution form
Realizing in test zone, thus both ensureing test accuracy, being also beneficial to improve testing efficiency.And believe according to facing side stress
Breath obtains faying face stress distribution, then the comprehensive information that is related to is tested, stores, calculating and visualization link, and information type includes tying
Conjunction face and face side Stress Field Distribution shape information, test obtain stress information and assembling structure information.
Junction assembly stress simulation, test result analysis are can be found that: (1) does not occur local to answer at joint portion edge
In the case that power is concentrated, joint portion stress distribution has seriality, and some stress contours on faying face necessarily have part to prolong
Reach on the adjacent side of faying face；(2) in the case of load active position and direction are constant, change with magnitude of load, faying face
Upper stress equivalence wire shaped is relatively stable, and each contour numerical value is with load significant changes.
According to stress distribution seriality, stress contour shape stability feature: in the adjacent side obtaining faying face
Stress state, on the basis of setting up adjacent side and faying face stress corresponding relation, then can determine the stress distribution of faying face.
For realize accurately, Efficient lathe be fitted to each other face stress distribution measurement, invent a kind of faying face stress distribution indirect
Measurement thin film, system and method.This invention is conducive to real-time monitoring to be fitted to each other surface contact state, and then evaluates assembling quality,
Solve the problems, such as that inserting sensor direct measurement stress distribution in assembling process destroys interface contact state.
Content of the invention
It is an object of the invention to, be fitted to each other between face for lathe be not easy to place sensor direct measurement stress divide
Cloth, higher using the measuring method measurement cost such as ultrasound wave, it is not easy to the problem of on-line measurement using pressure-sensitive paper membrane process, no again
Adapt to the real-time measurement being fitted to each other face stress in lathe high volume production process, a kind of lathe of proposition is fitted to each other face should
Power distribution measurement system and method, the seriality according to stress distribution for the present invention, the feature of stress contour shape stability, profit
The measurement thin film that can be mass is pasted on the adjacent side of faying face, by measuring the stress collection sensing of setting on thin film
The measured value of device reflects the stress distribution of faying face indirectly.
A kind of lathe is fitted to each other face stress distribution measurement thin film, and the part of lathe and part are fixed by securing member
Assembling, the face that part and part fit is faying face, and the side adjacent with faying face is adjacent side, answering on faying face
Power contour can partly extend on its adjacent side, and the stress field shape near component fastener can be by the combination of part
In the stress contour near securing member and stress contour, the extension line on adjacent side represents in face, big with securing member pretightning force
Little change, stress field shape kept stable.
Measurement thin film is pasted onto on the adjacent side of part, determines knot by the stress on the adjacent side of measurement part
The stress distribution in conjunction face, measurement thin film has the consistent marking line of the extension line on adjacent side with stress contour；Described
Measurement thin film includes:
It is arranged on k stress collection sensor on described marking line, wherein k is the integer more than zero, and stress collection passes
The stress that sensor records be equal to marking line corresponding neighbour side on extension line stress, that is, on the corresponding faying face of extension line etc.
The stress of value line；
The signal that the signal that k described stress is gathered sensor acquisition pools together collects unit, and described signal converges
The analogue signal that k received stress gathers sensor is converted into digital signal output by collection unit；
For described measurement thin film is accurately positioned the positioning unit being pasted onto on described neighbour side；By described measurement thin film
After positioning, the marking line of described measurement thin film is coincided with the extension line on described neighbour side.
The stress that lathe is fitted to each other face is concentrated mainly on around securing member, be can determine that by the stress of the adjacent side of measurement
The stress distribution of faying face, needs to paste corresponding stress collection biography on each adjacent side being fitted to each other face of each lathe
Sensor.If the part of lathe is identical with component shape, material and fastener locations, stress field shape is also identical, is
Adapt to produce in enormous quantities, the difference according to stress field shape makes different measurement thin film, only need to according to the part of lathe with
The difference of component shape, material and fastener locations selects the measurement thin film corresponding with its stress field shape, surveys
Amount thin film can be mass, and the correspondence position that measurement thin film is pasted onto adjacent side can reflect that the stress of faying face divides in real time
Cloth.
Further, described stress collection sensor is foil gauge, and described stress collection sensor includes Response Division and defeated
Go out wire；It is signal socket that described signal collects unit.Only need to be possible to show when needing and measure faying face stress distribution
Show that the ancillary equipment of stress distribution situation is connected with signal socket, an ancillary equipment can connect multiple signals as needed
Socket.
Further, described measurement thin film includes inner membrance and adventitia；Described inner membrance and adventitia are all using light weight, softness, thoroughly
The bright, material of insulation；Described adventitia has the installation that the k Response Division that can gather sensor with described stress is adapted installation
Hole；Described inner membrance and adventitia are pasted together；The Response Division that described stress gathers sensor is pasted and fixed in installing hole, and should
The measuring surface in change portion exposes described adventitia；The output lead that described stress gathers sensor is folded between inner membrance and adventitia, and k
The output lead that individual described stress gathers sensor all collects unit with described signal and electrically connects.
Further, described neighbour side is provided with scale and numeral mark, described positioning unit near faying face position
It is in the edge setting of the described measurement thin film scale consistent with the relevant position of described neighbour side and numeral mark, so that measurement
After thin film is pasted onto on adjacent side, the marking line on measurement thin film is coincided with the extension line on adjacent side.
A kind of lathe is fitted to each other face stress distribution measuring system, the shape of part and part, material and securing member
When position is identical, with the change of pretightning force size, the stress field shape near securing member is basically unchanged, simply equivalent with bar stress
The stress value that line represents there occurs change；It is characterized in that described measuring system includes: as described in any one of Claims 1 to 4
Measurement thin film, memory module and human-computer interaction module；
Described measurement thin film is pasted onto on the adjacent side of described part, is fitted to each other answering of face for real-time measurement lathe
Power；Thin film numbering will be measured according to the marking line on measurement thin film and corresponding stress field shape difference；
Described memory module includes stress field shape database, measured database and retrieval unit；According to part and part
The difference of shape, material and fastener locations can reflect different stress field shapes, by these different stress fields
Shape is stored in stress field shape database, and every kind of stress field shape corresponds to a kind of measurement thin film matching therewith；Described survey
Amount data base is used for the real time data of each stress collection sensor measurement of storage measurement thin film；Described retrieval unit is according to survey
The numbering of amount thin film retrieves corresponding stress field shape；
Described human-computer interaction module draws faying face geometry according to the profile of faying face；Described human-computer interaction module will
Described faying face geometry, each stress of the position of securing member, the stress field shape near securing member and measurement thin film are adopted
The numerical value correspondence that collection sensor obtains combines, and is shown with intuitively image data.
A kind of lathe is fitted to each other face stress distribution measuring method it is characterised in that described measuring method includes following step
Rapid:
Step a: select measurement thin film, choosing according to the shape of part and part, material and fastener locations can
The measurement thin film matching with the faying face stress field shape of required measurement；
Step b: measurement thin film positioning, stickup, in the case that securing member does not apply pretightning force, using described measurement thin film
Positioning unit by the marking line of described measurement thin film, the extension line on adjacent side coincides with faying face stress field, and will survey
Amount thin film is pasted onto on described neighbour side；
Step c: stress data acquisition, securing member pass through pretightning force by part and part fixing assembling in the case of,
On collection measurement thin film, each stress gathers the numerical value of sensor, collects unit by signal and passes all stress collections collecting
The numerical value of sensor exports measured database；
Step d: measurement data storage, by retrieval unit, corresponding stress is extracted according to measurement thin film numbering
Shape, will each stress gather sensor numerical value corresponding with stress contour, record the value of every stress contour；
Step e: draw faying face geometry, human-computer interaction module passes through simple point, line graph draws draw
Go out faying face geometry, wherein step e can be carried out independent of above step before or after above-mentioned any one step；
Step f: stress distribution shows, the corresponding stress field shape that step d is extracted is several with the faying face that step e is drawn
What structure combines, and shows location and shape on faying face for the stress contour, and the data of step d storage is indicated
On corresponding stress contour, you can intuitively show faying face stress distribution situation.
According to the stress distribution principle of continuity and stress contour shape stability feature, lathe of the present invention is fitted to each other face
The measurement of stress distribution provides a kind of new method, and this beneficial effect of the invention is:
(1) pass through the stress of the adjacent side of measurement, indirect gain faying face stress distribution, do not destroy and combine surface contact state,
Do not affect structural member assembling and use；
(2) invention measurement thin film, measurement thin film can be mass, according to lathe assemble the shape of two parts, material and
Fastener locations select measurement thin film, and measurement thin film is positioned, is pasted onto on adjacent side, solve in production in enormous quantities
Stress collection sensor is pasted and is positioned inaccurate, stickup trouble, and connects the problem of external measuring device complexity when measuring；
(3) memory module and human-computer interaction module provide information real-time storage and visual display function, are supervised with directly perceived
Survey, analyze faying face stress distribution.
Brief description
For clearer explanation embodiments of the invention, below in conjunction with the accompanying drawings the present invention is elaborated, aobvious and easy
Insight, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, not
On the premise of paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 measures thin film front view for the embodiment of the present invention；
Fig. 2 measures thin film upward view for the embodiment of the present invention；
Fig. 3 embodiment of the present invention measures thin film internal structure partial sectional view；
Fig. 4 is embodiment of the present invention measuring system schematic diagram；
Fig. 5 is embodiment of the present invention measuring system connection diagram；
Fig. 6 is embodiment of the present invention stress field schematic diagram；
Fig. 7 is embodiment of the present invention measurement thin film and stress contour corresponding diagram；
Fig. 8 is the faying face geometry simplifying certain machine tool component drawn；
Fig. 9 is the faying face stress distribution of human-computer interaction module display directly perceived.
In figure: 1, measure thin film, 1a, inner membrance, 1b, adventitia, 11, stress collection sensor, 11a, Response Division, 11b, output
Wire, 12, signal collect unit, 13, positioning unit, 14, marking line, 2, memory module, 21, stress field shape database, 22,
Measured database, 23, retrieval unit, 3, human-computer interaction module, 4, part, 5, part, 6, securing member, a, contour, b, prolong
Stretch line.
Specific embodiment
The part 4 of lathe and part 5 pass through securing member 6 fixing assembling, and the face that part 4 is fitted with part 5 is
Faying face, the side adjacent with faying face is adjacent side, and the stress contour a on faying face can partly extend to its adjacent side
On, stress field shape near the securing member 6 of part 5 can pass through the faying face of part 5 stress near securing member 6 etc.
Extension line b on adjacent side for the value line a and stress contour a represents；Because the effect of power is mutual, thus faying face should
It is identical that force distribution is measured by part 4 and part 5, and it is representative that the present invention chooses part 5.Pre- with securing member 6
The change of clamp force size, stress field shape kept stable, simply represent with every stress contour a of change of pretightning force
Numerical value is different.
The stress that lathe is fitted to each other face is concentrated mainly on securing member 6 around, in actual production assembling, connects two
The securing members such as the bolt of part are general apart will not be too near, can according to Saint Venant's principle (saint venant ' s principle)
Know and apply pretightning force at a distance of less near bolt simultaneously, the faying face stress contour near bolt will not influence each other.Right
The position away from bolt on faying face, because stress is less, it is less that Contact characteristics are affected, so be not required to it is measured.
Can determine that the stress distribution of faying face by the stress of the adjacent side of measurement, each needing in each lathe is fitted to each other the neighbour in face
Corresponding stress collection sensor 11 is pasted on side.If the part of lathe 4 and part 5 shape, material and securing member
6 positions are identical, then stress field shape is also identical, and in order to adapt to produce in enormous quantities, the difference according to stress field shape makes different
Measurement thin film 1, only need to according to the difference of the part 4 of lathe and part 5 shape, material and securing member 6 position select with
The corresponding measurement thin film 1 of its stress field shape, measurement thin film 1 can be mass, and measurement thin film 1 is pasted onto adjacent side
Correspondence position can reflect the stress distribution of faying face in real time.
The measurement thin film 1 of Fig. 1～Fig. 3, measurement thin film 1 is pasted onto on the adjacent side of part 5, by measurement part 5
Adjacent side on the stress distribution to determine faying face for the stress, measurement thin film 1 has with stress contour a on adjacent side
The consistent marking line 14 of extension line b.Measurement thin film 1 includes: stress collection sensor 11, signal collect unit 12 and positioning is single
Unit 13.K stress collection sensor 11 is provided with marking line 14, wherein k is the integer more than zero, and typically choosing several has generation
The marking line 14 corresponding with the extension line b on adjacent side of table, one stress collection of setting on every marking line 14 passes
Sensor 11, the stress collection sensor 11 of the present embodiment is preferably foil gauge.The stress that stress collection sensor 11 records is equal to
The stress of extension line b, the i.e. stress of the contour a on the corresponding faying face of extension line b on the corresponding neighbour side of marking line 14.Letter
Number collect unit 12 k stress is gathered the signal that sensor 11 gathers and pool together, signal collects unit 12 and will receive
K stress gather the analogue signal of sensor 11 and be converted into digital signal output, it is excellent that the signal of the present embodiment collects unit 12
Elect a signal socket as, peripheral stress measuring apparatus can be directly connected to, to faying face stress in being especially suitable for producing in enormous quantities
Real-time monitoring.Positioning unit 13 is used for being accurately positioned and be pasted onto adjacent side measurement thin film 1, will measure after thin film 1 positions,
The marking line 14 of measurement thin film 1 is coincided with the extension line b on adjacent side.
Adjacent side is provided near faying face position+", scale and the numeral mark such as " | ", positioning unit 13 is in measurement
The edge of thin film 1 arranges the scale consistent with the relevant position of adjacent side and numeral mark, so that measurement thin film 1 is pasted onto adjacent side
After on face, the marking line 14 on measurement thin film 1 is coincided with the extension line b on adjacent side.
Measurement thin film 1 as shown in Figure 3 is made up of inner membrance 1a and adventitia 1b, and inner membrance 1a and adventitia 1b is all using light weight, soft
Soft, the transparent, material of insulation；Adventitia 1b has the peace that the k Response Division 11a that can gather sensor 11 with stress is adapted installation
Dress hole；Inner membrance 1a and adventitia 1b is pasted together；The Response Division 11a that stress gathers sensor 11 is pasted and fixed in installing hole,
And the measuring surface of Response Division 11a exposes described adventitia 1b；Stress gather sensor 11 output lead 11b be folded in inner membrance 1a with
Between adventitia 1b, and the output lead 11b of k stress collection sensor 11 is all collected unit 12 (signal socket) and is electrically connected with signal
Connect, signal collects unit 12 and concentrates output to arrive memory element the signal that k stress collection sensor 11 gathers.
Fig. 4 is fitted to each other face stress distribution measuring system for lathe, and Fig. 5 is measuring system connection diagram, measuring system
Including measurement thin film 1, memory module 2 and human-computer interaction module 3.Described measurement thin film 1 is pasted onto the adjacent side of described part 5
On face, it is fitted to each other the stress in face for real-time measurement lathe；According to the marking line 14 on measurement thin film 1 and corresponding stress field
Shape difference will measure thin film 1 and number；The measurement thin film 1 that the present invention provides has multiple numberings, the measurement thin film 1 of different numberings
Upper stress gathers the specification of sensor 11, position difference, to meet the measurement requirement of different faying faces.
Memory module 2 includes stress field shape database 21, measured database 22 and retrieval unit 23.
Different stress can be reflected from the difference of the shape, material and securing member 6 position of part 5 according to part 4
Field shape, these different stress field shapes are stored in stress field shape database 21, and every kind of stress field shape is corresponding a kind of
The measurement thin film 1 matching therewith.Stress field shape have recorded the continuation property of adjacent side stress field and faying face stress field.Figure
6 show certain is fitted to each other face Stress field features, wherein oiFor securing member 6 pretightning force active position, liFor pretightning force away from faying face
Distance with adjacent side intersection；hiFor the thickness of part 5, l can be passed through in securing member 6 positioniAnd hiRepresent.σ1、σ2、σ3、σ4、σ
5th, σ 6 to should combine stress contour a, dotted line be extension line b on adjacent side for the stress contour a, stress contour
Form can be obtained by theoretical analysis and test.p21、p22、p23、……、p2nIt is respectively stress contour σ2Positional information.Take
oiFor local coordinate system initial point, location point pijStress field features information record be < σi,xij,yij,zij>, wherein σiFor corresponding
Stress value, xij,yij,zijFor corresponding positional information.
Each stress that measured database 22 is used for storage measurement thin film 1 gathers the real time data that sensor 11 measures, for entering
The faying face stress distribution of one step shows and analysis lays the foundation.
Retrieval unit 23 is to retrieve corresponding stress field shape according to the numbering of measurement thin film 1, and this unit is storage
Measurement data, and the basis showing faying face stress distribution feature directly perceived.
Fig. 7 show joint portion stress measurement schematic diagram, pastes with a series of stress collections in adjacent side relevant position
The measurement thin film 1 of sensor 11, obtains each contour a such as σ 1, σ 2, σ 3, σ 4, σ 5, σ 6 answering on the extension line b on adjacent side
Force information, and then indirectly obtain faying face stress information.During information Store, obtain each stress on measurement thin film 1 first and adopt
The stress information that collection sensor 11 measurement obtains, then extracts and measurement thin film 1 numbers corresponding stress field shape, and then records
Each stress measurement numerical value and stress contour σiBetween corresponding relation, such as σ 1=28mpa, σ 2=23mpa ....
Human-computer interaction module 3 draws faying face geometry according to the profile of faying face, is simply drawn using drafting system
The profile of faying face, on the basis of not affecting faying face stress distribution analysis result, simplifies part details, chooses crucial profile
Flex point, draws faying face geometry.Certain faying face according to as shown in Figure 8
The faying face geometrized structure graph drawn, o is zero, o, s1、s2、……、s15For drawing geometrized structure graph
Data point.Human-computer interaction module 3 is by the stress field shape near described faying face geometry, the position of securing member 6, securing member 6
Each stress of shape and measurement thin film 1 gathers the numerical value correspondence that sensor 11 obtains and combines, and with as shown in Figure 9 directly perceived
Image data show.
Face stress distribution measuring system is fitted to each other according to the lathe of the present embodiment, below with typical bolt as securing member
As a example illustrate concrete faying face stress distribution measuring method, comprise the following steps:
Step a: select measurement thin film 1, chosen according to the shape of part 4 and part 5, material and securing member 6 position
The measurement thin film 1 that can match with the faying face stress field shape of required measurement；
Step b: measurement thin film 1 positions, pastes, in the case that securing member 6 does not apply pretightning force, using measurement thin film 1
Positioning unit 13 by measure thin film 1 marking line 14 the extension line b on adjacent side coincides with faying face stress field, and general
Measurement thin film 1 is pasted onto on adjacent side；
Step c: stress data acquisition, passes through pretightning force by the situation of part 4 and part 5 fixing assembling in securing member 6
Under, on collection measurement thin film 1, each stress gathers the numerical value of sensor 11, by signal collect unit 12 by collect all should
The numerical value that power gathers sensor 11 exports measured database 22；
Step d: measurement data storage, by retrieval unit 23, corresponding answering is extracted according to measurement thin film 1 numbering
Field of force shape, will be corresponding with stress contour a for the numerical value of each stress collection sensor 11, records every stress contour a's
Value；
Step e: draw faying face geometry, human-computer interaction module 3 passes through simple point, line graph draws draw
Go out faying face geometry, wherein step e can be carried out independent of above step before or after above-mentioned any one step；
Step f: stress distribution shows, the corresponding stress field shape that step d is extracted is several with the faying face that step e is drawn
What structure combines, and shows location and shape on faying face for the stress contour a, and the data of step d storage is indicated
To on corresponding stress contour a, you can intuitively show faying face stress distribution situation, as shown in Figure 9.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (6)
1. a kind of lathe is fitted to each other face stress distribution measurement thin film, and the part of lathe and part are by the fixing dress of securing member
Join, the face that part and part fit is faying face, the side adjacent with faying face is adjacent side, the stress on faying face
Contour can partly extend on its adjacent side, and the stress field shape near component fastener is existed by the faying face of part
Stress contour near the securing member and stress contour extension line on adjacent side represents；With securing member pretightning force size
Change, stress field shape kept stable；It is characterized in that: described measurement thin film is pasted onto on the adjacent side of part, leads to
Cross stress on the adjacent side the measuring described part stress distribution to determine faying face, described measurement thin film has and answers
The consistent marking line of extension line on adjacent side for the power contour；Described measurement thin film includes:
It is arranged on k stress collection sensor on described marking line, wherein k is the integer more than zero, and stress gathers sensor
The stress recording is equal to the stress of extension line on marking line corresponding neighbour side, i.e. contour on the corresponding faying face of extension line
Stress；
The signal that the signal that k described stress is gathered sensor acquisition pools together collects unit, and described signal collects list
The analogue signal that k received stress gathers sensor is converted into digital signal output by unit；
For described measurement thin film is accurately positioned the positioning unit being pasted onto on described neighbour side；By described measurement thin film positioning
Afterwards, the marking line of described measurement thin film and the extension line on described neighbour side coincide.
2. lathe according to claim 1 be fitted to each other face stress distribution measurement thin film it is characterised in that: described stress is adopted
Integrate sensor as foil gauge, described stress collection sensor includes Response Division and output lead；It is letter that described signal collects unit
Number socket.
3. lathe according to claim 2 be fitted to each other face stress distribution measurement thin film it is characterised in that: described measurement is thin
Film includes inner membrance and adventitia；Described inner membrance and adventitia are all using light weight, softness, transparent, insulation material；Described adventitia has k
The individual installing hole that can be adapted installation with the Response Division of described strain acquirement sensor；Described inner membrance and adventitia are pasted together；
The Response Division that described stress gathers sensor is pasted and fixed in installing hole, and the measuring surface of Response Division exposes described adventitia；Institute
The output lead stating stress collection sensor is folded between inner membrance and adventitia, and the output of k described stress collection sensor
Wire all collects unit with described signal and electrically connects.
4. lathe according to claim 1 be fitted to each other face stress distribution measurement thin film it is characterised in that: described neighbour side
Faying face position is provided with scale and numeral mark, described positioning unit is to arrange and institute at the edge of described measurement thin film
State the consistent scale in relevant position and the numeral mark of adjacent side, so that after measurement thin film is pasted onto on adjacent side, measuring thin film
On marking line coincide with the extension line on adjacent side.
5. a kind of lathe is fitted to each other face stress distribution measuring system, the shape of part and part, material and securing member position
When putting identical, with the change of pretightning force size, the stress field shape near securing member is basically unchanged, simply with bar stress contour
The stress value representing there occurs change；It is characterized in that described measuring system includes: as described in any one of Claims 1 to 4
Measurement thin film, memory module and human-computer interaction module；
Described measurement thin film is pasted onto on the adjacent side of described part, is fitted to each other the stress in face for real-time measurement lathe；
Thin film numbering will be measured according to the marking line on measurement thin film and corresponding stress field shape difference；
Described memory module includes stress field shape database, measured database and retrieval unit；According to part and part
The difference of shape, material and fastener locations can reflect different stress field shapes, by these different stress field shapes
It is stored in stress field shape database, every kind of stress field shape corresponds to a kind of measurement thin film matching therewith；Described measurement number
Gather the real time data of sensor measurement according to each stress that storehouse is used for storage measurement thin film；Described retrieval unit is thin according to measuring
The numbering of film retrieves corresponding stress field shape；
Described human-computer interaction module draws faying face geometry according to the profile of faying face；Described human-computer interaction module will be described
Each stress collection of faying face geometry, the position of securing member, the stress field shape near securing member and measurement thin film passes
The numerical value correspondence that sensor obtains combines, and is shown with intuitively image data.
6. a kind of lathe is fitted to each other face stress distribution measuring method it is characterised in that described measuring method comprises the following steps:
Step a: select measurement thin film, choosing according to the shape of part and part, material and fastener locations can be with institute
The measurement thin film that the faying face stress field shape that need to measure matches；
Step b: measurement thin film positioning, stickup, in the case that securing member does not apply pretightning force, using determining of described measurement thin film
By the marking line of described measurement thin film, the extension line on adjacent side coincides bit location with faying face stress field, and will measure thin
Film is pasted onto on described neighbour side；
Step c: stress data acquisition, securing member pass through pretightning force by part and part fixing assembling in the case of, collection
On measurement thin film, each stress gathers the numerical value of sensor, collects unit by signal and all stress collecting are gathered sensor
Numerical value export measured database；
Step d: measurement data storage, by retrieval unit, corresponding stress field shape is extracted according to measurement thin film numbering
Shape, will be corresponding with stress contour for the numerical value of each stress collection sensor, records the value of every stress contour；
Step e: draw faying face geometry, human-computer interaction module is drawn draw by simple point, line graph and gone out knot
Conjunction face geometry, wherein step e can be carried out independent of above step before or after above-mentioned any one step；
Step f: stress distribution shows, the faying face geometry knot that the corresponding stress field shape that step d is extracted is drawn with step e
Structure combines, and shows location and shape on faying face for the stress contour, and the data of step d storage is indicated corresponding
Stress contour on, you can intuitively show faying face stress distribution situation.
Priority Applications (1)
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| CN112179237B (en) * | 2020-09-27 | 2022-06-17 | 神通科技集团股份有限公司 | Automobile stand column outer plate assembly quality detection system |
| CN112629736B (en) * | 2020-12-08 | 2022-12-13 | 沈阳航空航天大学 | Bolt connection structure state monitoring system and monitoring method based on micro-nano sensor |
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| JPS5984131A (en) * | 1982-11-06 | 1984-05-15 | Hitachi Zosen Corp | Stress measuring method of structure |
| JPS5984131U (en) * | 1982-11-30 | 1984-06-07 | 松下電工株式会社 | roof ventilation structure |
| JP2754035B2 (en) * | 1989-04-28 | 1998-05-20 | 前田建設工業株式会社 | Ground looseness measurement method |
| US6829944B1 (en) * | 2001-10-09 | 2004-12-14 | Stuart M. Gleman | Bolt tension gauging system |
| CN102032964B (en) * | 2009-09-29 | 2012-05-02 | 张美超 | Pressure sensitive film and using method thereof |
| CN201983892U (en) * | 2010-12-03 | 2011-09-21 | 西安交通大学 | Test device of threaded tightening force and pressure distribution between combination surfaces of connected pieces |
| CN103017954B (en) * | 2011-09-22 | 2015-07-15 | 北京理工大学 | Measuring method for plate stress field |
| CN102928144B (en) * | 2012-10-14 | 2015-01-07 | 中国矿业大学 | System for monitoring gob stress in real time and overlying strata breakage judgment method |
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