CN110186392A - Calipers inside and outside a kind of pipe fitting - Google Patents
Calipers inside and outside a kind of pipe fitting Download PDFInfo
- Publication number
- CN110186392A CN110186392A CN201910451207.3A CN201910451207A CN110186392A CN 110186392 A CN110186392 A CN 110186392A CN 201910451207 A CN201910451207 A CN 201910451207A CN 110186392 A CN110186392 A CN 110186392A
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- Prior art keywords
- pipe fitting
- internal diameter
- testing
- feed mechanism
- outside
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention discloses calipers inside and outside a kind of pipe fitting, including test platform, the outside diameter measuring unit being arranged on the test platform and internal diameter measuring unit and testing and control combiner.The measuring device realizes the measurement to tube outer diameter using image measurement technology, realizes the measurement to pipe fitting internal diameter using laser ranging technique, and two kinds of test methods are contactless measurement, guarantee measurement result accurate and effective.Device to test process is full-automatic, can not only realize the synchro measure of pipe fitting internal-and external diameter, but also can realize the independent test of pipe fitting internal diameter or outer diameter, substantially increase test and the detection efficiency of pipe fitting.
Description
Technical field
The present invention relates to fitting structure measurements, more particularly to calipers inside and outside a kind of pipe fitting.
Background technique
In industrial production and manufacturing field, the internal diameter and measuring outside diameter of tubing products are important in production detection
Link.Common pipe fitting inner and outer diameter measurement method can be roughly divided into contact type measurement and two kinds of non-contact measurement.Contact
Formula measurement method mainly has inside micrometer, internal diameter micrometer, roundness measuring equipment etc..Often there is contact force in contact measurement method
Error caused by caused error or manually adjustment etc., and measurement efficiency is relatively low.Contactless measurement is main
There are laser interferometer, laser lever method, doppler effect method, image CCD imaging method etc..Non-contact measurement generally have compared with
High measurement accuracy, but equipment cost is higher, use scope is relatively narrow, can not all automatic measurement, it is raw not meet factory automation
The needs of production.Currently, already present plumbing dimensions measuring device on the market, often a certain just for the internal diameter of pipe fitting or outer diameter
Size measures, and when pipe fitting internal diameter and outer diameter are required to detection, then needs to prepare two kinds of test equipments or tool, point
Inspection is not measured, and testing efficiency is low.Accordingly, it is desirable to provide calipers inside and outside a kind of pipe fitting, are guaranteeing test essence
Under the premise of degree, it is able to achieve the efficient automatic synchronization measurement of pipe fitting internal-and external diameter, time and human cost is significantly saved, is promoted
Detection efficiency.
Summary of the invention
The purpose of the present invention is to provide calipers inside and outside a kind of pipe fitting, to solve the above problems.
In order to achieve the above objectives, the present invention adopts the following technical solutions:
The invention discloses calipers inside and outside a kind of pipe fitting, the measuring device includes: the measuring device packet
It includes: test platform, the outside diameter measuring unit being arranged on the test platform and internal diameter measuring unit and testing and control combination
Device,
The test platform is tested pipe fitting for clamping and provides for the internal diameter measuring unit and outside diameter measuring unit
Positioning datum；
The outside diameter measuring unit, for the outside diameter measuring instruction in response to the testing and control combiner, intake is tested
The image information of pipe fitting is simultaneously sent to the testing and control combiner；
The internal diameter measuring unit, for the internal diameter measurement instruction in response to the testing and control combiner, measurement is tested
The internal diameter data information of pipe fitting is simultaneously sent to the testing and control combiner；
The testing and control combiner controls the outside diameter measuring unit intake figure for the operation in response to user
As information, described image information is handled to obtain the outer diameter value of tested pipe fitting, and judges whether the outer diameter value is qualified
And it shows；And/or the control internal diameter measuring unit measures internal diameter data information, handles the internal diameter data information
To obtain the inner diameter values of tested pipe fitting, and judge whether the inner diameter values are qualified and show.
Preferably, the test platform includes: reference platform and the clamping tooling that is arranged on the reference platform,
The clamping tooling, for being tested pipe fitting along with the reference platform upper surface parallel direction clamping, wherein described
Outside diameter measuring unit intake direction is to be tested the radial direction of pipe fitting and perpendicular to the reference platform.
Preferably, the outside diameter measuring unit includes: the vertical focus adjusting mechanism, industrial camera, double that coaxial line is set gradually
Telecentric lens and light compensating lamp,
Wherein, the vertical focus adjusting mechanism, for adjusting the field range of the industrial camera；The industrial camera is used
In pass through the doubly telecentric camera lens carry out Image Acquisition；The doubly telecentric camera lens, for providing visual field for the industrial camera；
The light compensating lamp, for carrying out light filling to pipe fitting measured in measurement process.
Preferably, using based on TCP communication transfer between the testing and control combiner and the outside diameter measuring unit.
Preferably, the internal diameter measuring unit includes:
Laser range sensor, for the measurement instruction in response to the testing and control combiner, to tested pipe fitting internal diameter
It measures；
Connecting rod, for connecting the laser range sensor and spin mechanics；
The spin mechanics drive the laser ranging for the spin instruction in response to the testing and control combiner
Sensor, which is realized, carries out rotation by rotation center of the axle center of the connecting rod；And
Feed mechanism, for adjusting the position of the spin mechanics and driving the laser range sensor mobile.
Preferably, the laser range sensor, the connecting rod, the spin mechanics and the feed mechanism be successively
Connection, one end that the feed mechanism is not connect with the spin mechanics is fixed on the reference platform.
Preferably, the feed mechanism includes: horizontal feed mechanism and vertical feed mechanism,
The horizontal feed mechanism, for driving the laser range sensor to move along pipe fitting axial direction is tested,
Described in one end of horizontal feed mechanism connect with the spin mechanics, the other end is connect with the vertical feed mechanism；
The vertical feed mechanism, for driving the laser range sensor along perpendicular to the reference platform direction
Upper movement, wherein one end of the vertical feed mechanism is connect with the horizontal feed mechanism, the other end and the reference platform
Connection.
Preferably, the testing and control combiner includes:
Image receiving unit for receiving described image information, and is sent to information process unit；
Internal diameter data receipt unit for receiving the internal diameter data information, and is sent to the information process unit；
Information process unit, it is vertical at the radial outer edge profile and interception three that are tested pipe fitting in image information for extracting
In the section of pipe fitting axis, calculates the pixel value in section and two point of intersection of the radial outer edge profile and be averaged, and
Based on the calibrating parameters for carrying out calibration acquisition to outer diameter measuring unit, the outer diameter value is calculated；And/or with the laser ranging
The rotation center of sensor is coordinate origin, using horizontal direction and perpendicular to tested pipe fitting axis direction as X-axis, with vertical side
To and perpendicular to tested pipe fitting axis direction be Y-axis establish rectangular coordinate system, according to the laser range sensor measure away from
The coordinate being located in coordinate system is obtained from data and reading angle-data corresponding with the range data, utilizes minimum two
Multiplication fits tested pipe fitting internal diameter circle contour, calculates preliminary survey inner diameter values, repeats above-mentioned calculating process, obtains and measures number at three
According to three preliminary survey inner diameter values, seek average and obtain the inner diameter values；
Comparing unit, for the outer diameter value compared with first threshold, to be judged whether the outer diameter value is qualified；With/
Or, the inner diameter values are compared with second threshold, judge whether the inner diameter values are qualified, obtain judging result；And
Display unit, for showing the judging result.
Beneficial effects of the present invention are as follows:
Calipers realize the automatic of tubing products internal-and external diameter in industrial production inside and outside pipe fitting disclosed in this invention
Change measurement, examine.The device realizes the measurement to tube outer diameter using image measurement technology, is realized using laser ranging technique
Measurement to pipe fitting internal diameter has the advantages that definite principle, design are simple.Two kinds of test methods are non-contact measurement side
Method guarantees measurement result accurate and effective.Device to test process is full-automatic, can not only realize the synchro measure of pipe fitting internal-and external diameter, but also
The independent test that pipe fitting internal diameter or outer diameter can be achieved, substantially increases test and the detection efficiency of pipe fitting, significantly saves the time
And human cost.Furthermore it is verified by practical application measurement data, which exists to the measurement error of pipe fitting internal-and external diameter
Within 0.05mm.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows in one embodiment calipers composition figure inside and outside pipe fitting；
Fig. 2 shows tube outer diameter test philosophy schematic diagrames in one embodiment；
Fig. 3 shows pipe fitting internal diameter test philosophy schematic diagram in one embodiment.
In figure: 1, testing and control combiner；2, reference platform；3, clamping tooling；4, vertical focus adjusting mechanism；5, industrial phase
Machine；6, doubly telecentric camera lens；7, light compensating lamp；8, laser range sensor；9, spin mechanics；10, horizontal feed mechanism；11, vertical
Feed mechanism.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that being had below
The content of body description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
As shown in Figure 1, disclosing calipers inside and outside a kind of pipe fitting, the survey in one embodiment of the invention
Measuring device includes: test platform, the outside diameter measuring unit being arranged on the test platform and internal diameter measuring unit and test
Control combination device 1.The test platform is tested pipe fitting for clamping and mentions for the internal diameter measuring unit and outside diameter measuring unit
For positioning datum.The outside diameter measuring unit is used for the outside diameter measuring instruction intake quilt in response to the testing and control combiner 1
The image information of test tube part is simultaneously sent to the testing and control combiner 1.The internal diameter measuring unit is used in response to the survey
The internal diameter measurement instruction of control combination device 1 is tried, the internal diameter data information of tested pipe fitting is measured and is sent to the testing and control group
Clutch 1.The testing and control combiner 1 is used for the operation in response to user, controls the outside diameter measuring unit intake image
Information is handled described image information to obtain the outer diameter value of tested pipe fitting, and judges whether the outer diameter value is qualified simultaneously
Display；And/or control internal diameter measuring unit measurement internal diameter data information, to the internal diameter data information handled with
The inner diameter values of tested pipe fitting are obtained, and judge whether the inner diameter values are qualified and show.The measuring device testing process is realized
Full-automation can not only realize the synchro measure of pipe fitting internal-and external diameter, but also can realize the independent test of pipe fitting internal diameter or outer diameter, significantly
Test and the detection efficiency for improving pipe fitting, significantly save time and human cost.
In the present embodiment, the test platform includes: reference platform 2 and the clamping that is arranged on the reference platform
Tooling 3, wherein the clamping tooling 3 is used to be tested pipe fitting along with the 2 upper surface parallel direction clamping of reference platform.Work as pipe
After calipers control system normally starts inside and outside part, it is tested pipe fitting and is positioned by 3 Fast Installation of clamping tooling.Measured tube
After part is positioned, so that the direction of outside diameter measuring unit intake image is to be tested the radial direction of pipe fitting and perpendicular to institute
State reference platform 2.It is arranged after reference platform 2 but also the distance measuring sensor of the internal diameter measuring unit is in measurement process simultaneously
In convenient for by the interior movement of the tested pipe fitting after clamping.Preferably, when measuring internal diameter, the moving direction of distance measuring sensor is
The axial direction of tested pipe fitting.
In the present embodiment, the outside diameter measuring unit includes vertical focus adjusting mechanism 4, the industry that coaxial line is set gradually
Camera 5, doubly telecentric camera lens 6 and light compensating lamp 7.The outside diameter measuring of the measuring device uses image measurement technology, and light compensating lamp 7 is pacified
Loaded on reference platform 2, being located at immediately below tested pipe fitting, good illumination condition is provided for Image Acquisition；By described vertical
Focus adjusting mechanism 4 adjusts the field range of the industrial camera 5；It is anti-based on the magnetic railings ruler being arranged in the vertical focus adjusting mechanism 4
Feedback determines the distance of the doubly telecentric camera lens 6 to the reference platform 2；By traditional camera standardization, controlled using the test
Combiner 1 processed, scaling board and the distance of above-mentioned determination are demarcated and are calibrated to the industrial camera, to obtain calibrating parameters.
In the present embodiment, it is passed between the testing and control combiner 1 and the outside diameter measuring unit using TCP communication
It is defeated.When the outer diameter value to tested pipe fitting measures, as shown in Fig. 2, the testing and control combiner 1 is surveyed to the outer diameter
It measures unit and sends outside diameter measuring instruction, the industrial camera 5 in outside diameter measuring unit is acquired by the doubly telecentric camera lens 6
The image information (appearance profile image) of tested pipe fitting simultaneously passes through TCP communication transfer to testing and control combiner 1.The test
After control combination device 1 receives described image information by image receiving unit, it is sent to the testing and control combiner 1
Information process unit；The information process unit extract the radial outer edge profile of tested pipe fitting first and intercept at three perpendicular to
The section of pipe fitting axis；It calculates the pixel value in section and two point of intersection of the radial outer edge profile and is averaged, and
Based on the calibrating parameters for carrying out calibration acquisition by outside diameter measuring unit, the outer diameter value is calculated.Then pass through the test
The outer diameter value compared with first threshold, is judged whether the outer diameter value is qualified, is sentenced by the comparing unit of control combination device
Disconnected result.When being compared with first threshold, first threshold can be set as to outer diameter standard value, when outer diameter value and outer diameter
When the difference of standard value is without departing from manufacture plumbing dimensions error range, it is judged as qualified.In the last testing and control combiner
Display unit the judging result is shown.Preferably, the content that display unit can be shown includes: that measurement obtains
The outer diameter value, first threshold (outer diameter standard value), difference, qualification/unqualified etc..
In the present embodiment, the internal diameter measuring unit includes: laser range sensor 8, connecting rod, 9 and of spin mechanics
Feed mechanism.The laser range sensor 8 in response to the testing and control combiner internal diameter measurement instruction, to measured tube
Part internal diameter measures.The connecting rod is for connecting the laser range sensor and spin mechanics.The spin mechanics 9
In response to the spin instruction of the testing and control combiner 1, the laser range sensor 8 is driven to realize with the connecting rod
Axle center be rotation center carry out rotation.The position of the adjustable spin mechanics of feed mechanism simultaneously drives described sharp
Ligh-ranging sensor is mobile.The laser range sensor 8, the connecting rod, the spin mechanics 9 and the feed mechanism
It is sequentially connected, one end that the feed mechanism is not connect with the spin mechanics 9 is fixed on the reference platform 2.
Further, the feed mechanism includes horizontal feed mechanism 10 and vertical feed mechanism 11.The horizontal feed
Mechanism is moved for driving the laser range sensor edge to be tested pipe fitting axial direction, wherein the horizontal feed mechanism
One end is connect with the spin mechanics, and the other end is connect with the vertical feed mechanism.The wherein horizontal feed mechanism 10
One end is connect with the spin mechanics 9, and the other end is connect with the vertical feed mechanism 11.The vertical feed mechanism 11 is used
In drive the laser range sensor along perpendicular to being moved on the reference platform direction.The wherein vertical feed mechanism
11 one end is connect with the horizontal feed mechanism 10, and the other end is connect with the reference platform 2.Pipe fitting internal-and external diameter measurement dress
The internal diameter measurement set is tested after the fixed completion of pipe fitting, is adjusted by the testing and control combiner 1 using laser ranging technique
The whole vertical feed mechanism 11 is so that 8 height of the laser range sensor is located at same water with tested pipe fitting central axis
Horizontal line；Then adjust the horizontal feed mechanism 10 drive the laser range sensor 8 be deep into tested inside pipe fitting certain
One position, the initial position of measurement, which is adjusted, to be completed.The spin mechanics 9 are able to drive laser range sensor 8 and spin.
The testing and control combiner to the outside diameter measuring unit send outside diameter measuring instruction after, based on the spin mechanics from
Rotation reads angle every certain predetermined, and the testing and control combiner 1 reads the distance of a laser range sensor 8 passback
Data.Preferably, reading angle is 10 °, i.e., the described spin mechanics 9 are every to drive the laser range sensor 8 to rotate 10 °,
It reads primary.
In the present embodiment, the testing and control combiner further include: internal diameter data receipt unit, it is described for receiving
Internal diameter data information, and it is sent to the information process unit.The internal diameter measurement is controlled in the testing and control combiner 1
When unit measures tested pipe fitting, the information process unit can also receive the internal diameter data information, then with institute
The rotation center for stating laser range sensor 8 is coordinate origin O1, is with horizontal direction and perpendicular to tested pipe fitting axis direction
X-axis establishes rectangular coordinate system as Y-axis using vertical direction and perpendicular to tested pipe fitting axis direction；It is passed according to the laser ranging
The range data and reading angle-data corresponding with the range data that sensor 1 measures obtain the seat being located in coordinate system
Then mark fits tested pipe fitting internal diameter circle contour using least square method, calculate preliminary survey inner diameter values, this is revolved to complete one
Preliminary survey inner diameter values measurement in the turn-week phase, as shown in Figure 3.To guarantee data accuracy, above-mentioned calculating process is repeated, obtains three
Three preliminary survey inner diameter values for locating measurement data, seek average and obtain the inner diameter values.The ratio of the testing and control combiner 1
It is also able to achieve compared with unit by the inner diameter values compared with second threshold, judges whether the inner diameter values are qualified, obtain judgement knot
Fruit.When being compared with second threshold, second threshold can be set as to internal diameter standard value, when inner diameter values and internal diameter standard
When the difference of value is without departing from manufacture plumbing dimensions error range, it is judged as qualified.In the last testing and control combiner 1
Display unit can also show the judging result.Preferably, the content that display unit can be shown includes: that measurement obtains
Institute's internal-and external diameter value, second threshold (internal diameter standard value), difference, qualification/unqualified etc..
In conclusion the present invention utilizes image measurement technology, pass through the realizations pipe such as industrial camera, light compensating lamp, clamping mechanism
The measuring outside diameter of part；Using laser ranging technique, pipe fitting is realized by laser range sensor, servo feed mechanism etc.
Internal diameter measurement, realize synchro measure and the inspection of tube outer diameter and internal diameter, and measurement result is clearly shown in survey
Try the preceding edition liquid crystal display of control combination device, when measurement can select in through measurement and/or outside diameter measuring, easy to operate, test stream
Journey is automatically finished, and improves measurement and the checkability of pipe fitting.The present invention by vertical focus adjusting mechanism adjust industrial camera with
The distance of reference platform, vertical focus adjusting mechanism is interior can be with the position of accurate feedback doubly telecentric camera lens and reference platform equipped with magnetic railings ruler
Relationship is set, realizes the automatic Calibration of industrial camera；It can be fitted by adjusting the position of vertical focus adjusting mechanism and vertical feed mechanism
Various sizes of tested pipe fitting is answered, application range is wider.
Based on the above embodiment, the invention also discloses the specifically used methods of the measuring device.
1, calipers install test site first inside and outside pipe fitting, connect corresponding cable, testing and control combiner 1
It powers on, runs testing system software, system initialization is vertical focus control 4, spin mechanics 9, horizontal feed mechanism 10, vertical
Feed mechanism 11 is run to zero-bit.
2, according to the diameter for being tested pipe fitting, vertical 4 position of focus control is adjusted, entire pipe fitting diameter image is made to be located at work
In the field range of industry camera 5.Vertical focus control 4 is provided with magnetic railings ruler feedback, can accurately determine doubly telecentric camera lens 6 to
The distance between 2 table top of reference platform feeds back to testing and control combination 1.Testing and control combines 1 database relevant parameter, completes
The calibration and calibration of industrial camera 5.
3, tested pipe fitting is mounted on clamping tooling 3, according to the diameter of tested pipe fitting, adjusts vertical feed mechanism 11
Position, be substantially at the central axis of laser range sensor 8 and tested pipe fitting and be same as horizontal plane, setup test.
4, from 1 man-machine interface of testing and control combiner selection test pattern (internal-and external diameter test pattern, internal diameter test pattern,
Outer diameter test pattern), click automatic testing button:
If selecting internal-and external diameter test pattern, the outer diameter and inner diameter of device synchronism detection pipe fitting.Outer diameter testing process is to mend
Light lamp is bright, and industrial camera 5 acquires the appearance profile image of tested pipe fitting by doubly telecentric camera lens 6 and passed to by TCP communication
Testing and control combiner 1；Testing and control combiner 1 handles pipe fitting image information, extracts pipe fitting radial outer edge profile, interception three
Locate section, calculate tested tube outer diameter image pixel value and be averaged, calculates tube outer diameter size according to calibrating parameters；
Internal diameter testing process is that horizontal feed mechanism 10 drives laser range sensor 8 to be deeply tested inside pipe fitting, spin
Mechanism 9 drives laser range sensor 8 to rotate a circle, and every 10 °, testing and control combiner 1 reads laser ranging sensing
The range data that device 8 returns, as shown in figure 3, using laser range sensor rotation center O1 as coordinate origin, with horizontal direction
And perpendicular to tested pipe fitting axis direction be X axis, using vertical direction and perpendicular to tested pipe fitting axis direction be Y-axis establish directly
Angular coordinate system, according to range data and rotation angle calculation test point x, institute's measuring point data is added in coordinate system by y-coordinate,
Tested pipe fitting internal diameter circle contour is fitted using least square method, calculates pipe fitting inner diameter values；Horizontal feed mechanism feed one
Survey calculation surveys the average value of three groups of data, as pipe fitting inner diameter values in triplicate to set a distance again；
Tested pipe fitting internal diameter and outer diameter value are shown in 1 front panel display screen of testing and control combiner, and with standard value ratio
It is right, determine whether product is qualified.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (8)
1. calipers inside and outside a kind of pipe fitting, which is characterized in that the measuring device includes: test platform, is arranged described
Outside diameter measuring unit and internal diameter measuring unit and testing and control combiner on test platform,
The test platform is tested pipe fitting for clamping and provides positioning base for the internal diameter measuring unit and outside diameter measuring unit
It is quasi-；
The outside diameter measuring unit absorbs tested pipe fitting for the outside diameter measuring instruction in response to the testing and control combiner
Image information and be sent to the testing and control combiner；
The internal diameter measuring unit measures tested pipe fitting for the internal diameter measurement instruction in response to the testing and control combiner
Internal diameter data information and be sent to the testing and control combiner；
The testing and control combiner controls the outside diameter measuring unit intake image letter for the operation in response to user
Breath is handled described image information to obtain the outer diameter value of tested pipe fitting, and judges whether the outer diameter value is qualified and shows
Show；And/or the control internal diameter measuring unit measures internal diameter data information, is handled the internal diameter data information to obtain
The inner diameter values of tested pipe fitting, and judge whether the inner diameter values are qualified and show.
2. calipers inside and outside pipe fitting according to claim 1, which is characterized in that the test platform includes: benchmark
Platform and the clamping tooling being arranged on the reference platform,
The clamping tooling, for being tested pipe fitting along with the reference platform upper surface parallel direction clamping.
3. calipers inside and outside pipe fitting according to claim 2, which is characterized in that the outside diameter measuring unit includes:
Vertical focus adjusting mechanism, industrial camera, doubly telecentric camera lens and the light compensating lamp that coaxial line is set gradually,
Wherein, the vertical focus adjusting mechanism, for adjusting the field range of the industrial camera；The industrial camera, for leading to
It crosses the doubly telecentric camera lens and carries out Image Acquisition；The doubly telecentric camera lens, for providing visual field for the industrial camera；The benefit
Light lamp, for carrying out light filling to pipe fitting measured in measurement process.
4. calipers inside and outside pipe fitting according to claim 1, which is characterized in that the testing and control combiner and institute
It states between outside diameter measuring unit using based on TCP communication transfer.
5. calipers inside and outside pipe fitting according to claim 1, which is characterized in that the internal diameter measuring unit includes:
Laser range sensor, for the internal diameter measurement instruction in response to the testing and control combiner, to tested pipe fitting internal diameter
It measures；
Connecting rod, for connecting the laser range sensor and spin mechanics；
The spin mechanics drive the laser ranging to sense for the spin instruction in response to the testing and control combiner
Device, which is realized, carries out rotation by rotation center of the axle center of the connecting rod；And
Feed mechanism, for adjusting the position of the spin mechanics and driving the laser range sensor mobile.
6. calipers inside and outside pipe fitting according to claim 5, which is characterized in that the laser range sensor, institute
It states connecting rod, the spin mechanics and the feed mechanism to be sequentially connected, the feed mechanism is not connect with the spin mechanics
One end be fixed on the reference platform.
7. calipers inside and outside pipe fitting according to claim 5, which is characterized in that the feed mechanism includes: level
Feed mechanism and vertical feed mechanism,
The horizontal feed mechanism moves, wherein institute for driving the laser range sensor edge to be tested pipe fitting axial direction
The one end for stating horizontal feed mechanism is connect with the spin mechanics, and the other end is connect with the vertical feed mechanism；
The vertical feed mechanism, for driving the laser range sensor edge to move up perpendicular to the reference platform direction
Dynamic, wherein one end of the vertical feed mechanism is connect with the horizontal feed mechanism, the other end is connect with the reference platform.
8. calipers inside and outside pipe fitting according to claim 1, which is characterized in that the testing and control combiner packet
It includes:
Image receiving unit for receiving described image information, and is sent to information process unit；
Internal diameter data receipt unit for receiving the internal diameter data information, and is sent to the information process unit；
Information process unit, for extracting at the radial outer edge profile and interception three that are tested pipe fitting in image information perpendicular to pipe fitting
The section of axis, the pixel value for calculating section and two point of intersection of the radial outer edge profile are simultaneously averaged, and are based on pair
Outside diameter measuring unit carries out the calibrating parameters of calibration acquisition, calculates the outer diameter value；And/or with the laser range sensor
Rotation center be coordinate origin, using horizontal direction and perpendicular to tested pipe fitting axis direction as X-axis, with vertical direction and vertical
Be that Y-axis establishes rectangular coordinate system in tested pipe fitting axis direction, the range data that is measured according to the laser range sensor and
Reading angle-data corresponding with the range data obtains the coordinate being located in coordinate system, is fitted using least square method
Tested pipe fitting internal diameter circle contour, calculates preliminary survey inner diameter values, repeats above-mentioned calculating process, obtains three preliminary surveys of measurement data at three
Inner diameter values seek average and obtain the inner diameter values；
Comparing unit, for the outer diameter value compared with first threshold, to be judged whether the outer diameter value is qualified；And/or by institute
It states inner diameter values to be compared with second threshold, judges whether the inner diameter values are qualified, obtain judging result；And
Display unit, for showing the judging result.
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|---|---|---|---|
| CN201910451207.3A CN110186392A (en) | 2019-05-28 | 2019-05-28 | Calipers inside and outside a kind of pipe fitting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910451207.3A CN110186392A (en) | 2019-05-28 | 2019-05-28 | Calipers inside and outside a kind of pipe fitting |
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| CN112197732A (en) * | 2020-11-30 | 2021-01-08 | 江苏集萃精凯高端装备技术有限公司 | Inner diameter detector |
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| CN113375577A (en) * | 2021-06-18 | 2021-09-10 | 明峰医疗系统股份有限公司 | Large-scale revolving body inner hole measuring system and measuring method |
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| CN114216778A (en) * | 2021-12-24 | 2022-03-22 | 国网浙江省电力有限公司双创中心 | Ring stiffness test equipment |
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