CN109596075A - A kind of straightness or curvature on-line measurement device and method - Google Patents
A kind of straightness or curvature on-line measurement device and method Download PDFInfo
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- CN109596075A CN109596075A CN201910080063.5A CN201910080063A CN109596075A CN 109596075 A CN109596075 A CN 109596075A CN 201910080063 A CN201910080063 A CN 201910080063A CN 109596075 A CN109596075 A CN 109596075A
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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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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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
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
Abstract
The present invention provides a kind of straightness or curvature on-line measurement device and methods, the on-line measurement device includes the second detection unit m of first detection unit n and its underface setting, first, second detection unit respectively includes at least three equidistant probes being arranged in juxtaposition, and first, second detection unit probe quantity it is identical, and the probe of first detection unit is respectively correspondingly arranged with a probe of second detection unit.In a kind of straightness of the present invention or curvature on-line measurement device, provided with two detection units, three probes have at least been set side by side in each detection unit, the analysis to measured object distance value is popped one's head in compared with by the way that every two is corresponding, the influence measured by stocking bumps defect straightness and curvature is effectively excluded, the accuracy of on-line measurement is improved.
Description
Technical field
The invention belongs to profile straightness and curvature field, more particularly, to a kind of straightness or curvature on-line measurement
Device and method.
Background technique
Currently, the fashioned iron stocking such as major diameter bar, tubing obtains more and more extensive application, because of production requirement, needed before use
This kind of fashioned iron stocking straightness and curvature are measured, judge whether it is setting in processing range, common measurement method
It is to be completed by mobile dial gauge, that is, move dial gauge along the fashioned iron stocking central axes direction, number is shown by dial gauge
Be worth radial missing at detection, to detect straightness and curvature in setting length, the detection method on the one hand due to dial gauge and
The direct contact wear of fashioned iron stocking, therefore the timing adjustment percentage meter accuracy and basic value are needed, meanwhile, in the detection process, hold
Misjudgment phenomenon caused by easily missing because of salient point after fashioned iron stocking surface defect such as concave point.
Summary of the invention
In view of this, the present invention is directed to propose a kind of straightness or curvature on-line measurement device and method, to realize pair
The detection of the online straightness of profile or curvature.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of straightness or curvature on-line measurement device, second be arranged including first detection unit n and its underface
Detection unit m, the first, second detection unit respectively include at least three equidistant probes being arranged in juxtaposition, and the first, second inspection
It is identical to survey unit probe quantity, and the probe of first detection unit is respectively correspondingly arranged with a probe of second detection unit.
Further, the probe is linear array laser displacement sensor probe.
Further, two probe spacing of outermost in first detection unit n, outermost two in second detection unit m
Spacing of popping one's head in is respectively unit distance 10000m.
Compared with the existing technology, a kind of straightness of the present invention or curvature on-line measurement device have following excellent
Gesture:
In a kind of straightness of the present invention or curvature on-line measurement device, two detection units are provided with, it is each
Three probes have at least been set side by side in a detection unit, by the corresponding probe of every two to the analysis of measured object distance value with than
Compared with effectively influence of the exclusion because of stocking bumps defect to straightness and curvature measurement improves the accuracy of on-line measurement.
A kind of stocking straightness On-line Measuring Method, comprising the following steps:
S1, by stocking by between the first, second detection unit, the throw light that each probe issues respectively with the stocking
Surface intersection, and the light of all probe projections is in a measurement plane；
S2, by the detection of first detection unit n and second detection unit m each probe respectively to the distance on stocking surface,
And counting beginning is denoted as by stocking the same end, sequentially record two groups of each probes of detection unit apart from detected value n1, n2 ...
Nn and m1, m2 ... mn；
S3, the stocking straightness is calculated:
It is each apart from detected value by first detection unit n, it calculates stocking and corresponds to the straightness δ in the detection length:
δ=(δ n+ δ m)/2
Or δ=(δ n/L1n+ δ m/L1n ˊ)/2；
Wherein: δ n=│ n1-nn │；
δ m=│ m1-mn │；
L1n --- distance between first and n-th of probe in first detection unit n；
L1n ˊ --- distance between first and n-th of probe in second detection unit m；
Further, the exclusion s2.5 that tests to stocking bumps defect point is include thed steps that between step s2 and s3: logical
Cross all every two be correspondingly arranged probe apart from detected value, calculate in the stocking detection length at each test point thickness or
Thickness diameter at each test point or chord length and other detection dot thickness or chord length are respectively compared and seek difference, by gained by chord length
Difference and stocking setting weight are made comparisons, if having a difference to be greater than or equal to stocking sets weight, determine the overproof difference
There is the concave defect that cannot be used for detection straightness or convex defect point in corresponding two test points；If the difference is respectively less than stocking and sets
Determine weight, then carries out step s3 operation；
Thickness or chord length size at stocking test point are as follows: distance sequentially subtracts this two between corresponding two probes of the test point
It pops one's head in respective and stocking apart from detected value.
A kind of stocking curvature On-line Measuring Method, comprising the following steps:
S1, by stocking by between the first, second detection unit, the throw light that each probe issues respectively with the stocking
Surface intersection, and the light of all probe projections is in a measurement plane；
S2, by each probe (1) detection of first detection unit n and second detection unit m respectively to stocking surface away from
From, and counting beginning is denoted as by stocking the same end, sequentially record two groups of each probes of detection unit apart from detected value n1,
N2 ... nn and m1, m2 ... mn；
S3, the stocking curvature is calculated:
Calculate each adjacent two probe distance detection difference in first detection unit n, every adjacent two in the second measuring unit m
A probe distance detection difference, then calculates stocking curvature W in the detection length, specific:
In two detection units, each adjacent two probe distance detection difference is respectively as follows:
Δ n1,2=n2-n1；Δ n 2,3=n3-n2；... Δ n (n-1), n=nn-n (n-1)；
Δ m1,2=m2-m1；Δ m 2,3=m3-m2；... Δ m (n-1), n=mn-n (n-1)；
Curvature W are as follows: W=(Wn+Wm)/2
Wherein: Wn=[| Δ n1,2 |+| Δ n 2,3 |+...+| Δ n (n-1), n |]/(n-1)；
Wm=[| Δ m1,2 |+| Δ m 2,3 |+...+| Δ m (n-1), n |]/(n-1)；
Further, the exclusion s2.5 that tests to stocking bumps defect point is include thed steps that between step s2 and s3: logical
Cross all every two be correspondingly arranged probe apart from detected value, calculate in the stocking detection length at each test point thickness or
Thickness diameter at each test point or chord length and other detection dot thickness or chord length are respectively compared and seek difference, by gained by chord length
Difference and stocking setting weight are made comparisons, if having a difference to be greater than or equal to stocking sets weight, determine the overproof difference
There is the concave defect that cannot be used for detection curvature or convex defect point in corresponding two test points；If the difference is respectively less than stocking and sets
Determine weight, then carries out step s3 operation；
Thickness or chord length size at stocking test point are as follows: distance sequentially subtracts this two between corresponding two probes of the test point
It pops one's head in respective and stocking apart from detected value.
Compared with the existing technology, stocking straightness of the present invention and curvature On-line Measuring Method have following excellent
Gesture:
In stocking straightness of the present invention or curvature On-line Measuring Method, by the corresponding probe distance of every two
Detected value analysis, and all every correspondences two probes are compared apart from detected value, it excludes because obscuring feelings caused by profile sags and crests
Condition obtains accurate straightness or curvature numerical value, improves the accuracy of straightness or curvature on-line measurement.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of straightness or curvature on-line measurement schematic device；
Fig. 2 is the stocking straightness on-line measurement schematic diagram using the detection device；
Fig. 3 is the stocking curvature on-line measurement schematic diagram using the detection device；
Fig. 4 is linear array laser displacement sensor working principle diagram；
Description of symbols:
1- probe；2- stocking；4-CMOS (line array CCD) array；5- signal processor；6- object under test；7- semiconductor swashs
Light device；The first eyeglass of 8-；9- third eyeglass.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of straightness or curvature on-line measurement device, including first detection unit n and its underface
The second detection unit m of setting, the first, second detection unit respectively include at least three equidistant probes 1 being arranged in juxtaposition, and
First, second detection unit, 1 quantity of popping one's head in is identical, and the probe 1 of first detection unit is respectively and one of second detection unit
Probe 1 is correspondingly arranged, it is preferred that the probe 1 is linear array laser displacement sensor probe.Due to stocking straightness and curvature
Conventional regulation are as follows: its shape radial position variable quantity is expressed as the stocking straightness and curvature, therefore this in 1000mm length
In embodiment, outermost two 1 spacing of probe in first detection unit n, in second detection unit m between outermost two probes 1
Away from respectively 1000mm or other numerical value, which can also set according to specific production environment and demand.
As shown in figure 4, the probe 1 is linear array laser displacement sensor probe comprising semiconductor laser 7, first
Eyeglass 8, third eyeglass 9, CMOS (line array CCD) array 4 and signal processor 5, principle are as follows: semiconductor laser 7 emits light,
The light is focused on testee 6 by the first eyeglass 8, and reflected light is collected by the second eyeglass 9, then projects CMOS (line
Battle array CCD) on array 4, signal processor 5 obtains the distance away from object, root by the light spot position on trigonometric function computing array 4
According to different light spot positions, signal processor 5 can calculate the distance between sensor and testee.In figure, L0To rise
Beginning distance, h are range, and a, b two o'clock are the different location for surveying object 6 respectively.
In following straightness or curvature detection method, said so that 1 quantity of popping one's head in each group of detection unit is 3 as an example
It is bright, by realizing the detection judgement of stocking straightness curvature to distance detection at 2 three test points of stocking.
As shown in Fig. 2, a kind of stocking straightness On-line Measuring Method of application measuring device, comprising the following steps:
S1, will stocking 2 by between the first, second detection unit, guarantee throw light that each probe 1 issues respectively and
2 surface of stocking intersection；
S2, respective and stocking 2 distance is detected by probe 1 each in first detection unit n and second detection unit m,
And counting beginning is denoted as by stocking the same end, sequentially record two groups of each probes of detection unit apart from detected value n1, n2, n3 and
m1,m2,m3；
S3,2 straightness of stocking calculate:
It is each apart from detected value by first detection unit n, calculate the straightness δ in the corresponding detection length of stocking 2:
δ=(δ 1+ δ 2)/2
Or δ=(δ 1/L13+ δ 2/L13 ˊ)/2；
Wherein: δ 1=│ n1-n3 │；
δ 2=│ m1-m3 │；
L13 --- distance between first and third probe in first detection unit n；
L13 ˊ --- distance between first and third probe in first detection unit m.
As shown in figure 3, a kind of stocking curvature On-line Measuring Method of application measuring device, comprising the following steps:
S1, will stocking 2 by between the first, second detection unit, guarantee throw light that each probe 1 issues respectively and
2 surface of stocking intersection；
S2, respective and stocking 2 distance is detected by probe 1 each in first detection unit n and second detection unit m,
And counting beginning is denoted as by stocking the same end, sequentially record two groups of each probes of detection unit apart from detected value n1, n2, n3 and
m1,m2,m3；
S3,2 curvature of stocking calculate:
Calculate each adjacent two probe distance detection difference in detection unit n, each adjacent two is visited in the second measuring unit m
Head distance detection difference, then calculates stocking (3) curvature W in the detection length, specific: in two detection units, every phase
Adjacent two probes distance detection difference is respectively as follows:
Δ n1,2=n2-n1；Δ n 2,3=n3-n2；；
Δ m1,2=m2-m1；Δ m 2,3=m3-m2；；
Curvature W are as follows: W=(Wn+Wm)/2
Wherein: Wn=(| Δ n1,2 |+| Δ n 2,3 |)/2；
Wm=(| Δ m1,2 |+| Δ m 2,3 |/2.
As shown in Fig. 2, (since in stocking curvature detection process, the concave-convex defect point for influencing curvature detection is examined
It is identical with defect point wipe-out mode concave-convex during Linearity surveying and principle to test wipe-out mode and principle, therefore the Fig. 2 can also
Inspection principle figure is excluded as concave-convex defect in curvature detection) since often there is concave-convex defect point on practical 2 surface of stocking,
Stocking 2 is also often accompanied by radial wobble when advancing simultaneously, in the stocking straightness or curvature measurement process, these factors
It will directly affect to by the on-line measurement of stocking straightness or curvature, when convex defect occurs in stocking 2 or concave defect Shi Junying
The calculating of straightness and curvature is rung, therefore, in this straightness or curvature measurement method, is increased between step s2 and s3 pair
It cannot be used for the concave-convex defect point that straightness or curvature calculate on stocking 2 to test the step s2.5 of exclusion: due to this reality
It applies in example, illustrates by taking three probes in each detection unit as an example, therefore, in any detection moment, test point is three, is passed through
All every two be correspondingly arranged probe 1 apart from detected value, calculate in the detection length of stocking 2 thickness at three test points
Or chord length d11, d22 and d33, chord length is indicated for stocking 2 when being round steel structure, to its straightness or curvature on-line checking,
Two probes being correspondingly arranged detect that the round steel thickness is its chord length, for convenience of explanation, are denoted as chord length (round steel), as often
The round steel corresponding point position chord length detected by two probes being correspondingly arranged；Test point any in three test points is detected and is counted
Other two test points of the value of the thickness or chord length (round steel) of calculating detect calculated thickness or chord length (round steel) is respectively compared
Difference, i.e. │ d11-d22 │ value, │ d22-d33 │ value, │ d11-d33 │ value are asked, each difference is made into ratio with the weight Δ of setting respectively
Compared with determining to deposit in corresponding two test points of the overproof difference if the weight Δ for thering is a difference to be greater than or equal to setting
Step (3) are carried out if the difference is respectively less than weight in the concave defect or convex defect that cannot be used for straightness or curvature calculating
Operation；Usual 2 thickness of stocking or the weight Δ of diameter deviation setting cannot be excessive and too small, weight is excessive will affect curvature or
The precision of straight line degree measurement, the too small size that will reduce acquisition data sample space of weight, should be according to the rolling operating condition at scene
With the actual demand concrete regulation of user, in the present embodiment, weight Δ is set as between 0.3-0.8mm.
Thickness or chord length (round steel) size are detected at 2 three test points of stocking are as follows: the corresponding two probe spacing of the test point
From detected value with a distance from this two respective and stockings 2 of popping one's head in sequentially is subtracted, both:
Diameter at first test point: d11=H11-n1-m1；
Diameter at first test point: d22=H22-n2-m2；
Diameter at first test point: d33=H33-n3-m3；
Wherein: H11 is that distance between two probes is corresponded at first test point of stocking；
H22 is that distance between two probes is corresponded at second test point of stocking；
H33 is that distance between two probes is corresponded at stocking third test point；
If | d11-d22 | or | d22-d33 | or | d11-d33 | >=Δ,
Then assert in three groups of gauge heads that at least one group gauge head detects concave-convex defective data cannot be used for straightness or bending
Degree calculates.
If | d11-d22 | with | d22-d33 | with | d11-d33 | while meeting < Δ, this moment, which respectively pops one's head in, to be obtained
Data can be used for straightness or curvature calculates.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of straightness or curvature on-line measurement device, it is characterised in that: set including first detection unit n and its underface
The second detection unit m set, the first, second detection unit respectively include at least three equidistant probes (1) being arranged in juxtaposition, and
First, second detection unit (1) quantity of popping one's head in is identical, and the probe (1) of first detection unit is respectively and second detection unit
One probe (1) is correspondingly arranged.
2. a kind of straightness according to claim 1 or curvature on-line measurement device, it is characterised in that: the probe
It (1) is linear array laser displacement sensor probe.
3. a kind of straightness according to claim 1 or curvature on-line measurement device, it is characterised in that: the first detection is single
Outermost two probe (1) spacing in first n, outermost two probe (1) spacing are respectively unit distance in second detection unit m
1000m。
4. a kind of stocking straightness On-line Measuring Method of application measuring device as described in power any one of 1-3, it is characterised in that: packet
Include following steps:
S1, by stocking (2) by between the first, second detection unit, throw light that each probe (1) issues is rolled with this respectively
The intersection of material (2) surface, and the light of all probe (1) projections is in a measurement plane；
S2, it is detected respectively by each probe (1) of first detection unit n and second detection unit m to the distance on stocking surface, and
Counting beginning is denoted as by stocking the same end, sequentially record two groups of each probes of detection unit apart from detected value n1, n2 ... nn
And m1, m2 ... mn；
S3, the stocking straightness calculate:
It is each apart from detected value by first detection unit n, calculate the straightness δ in stocking (2) corresponding detection length:
δ=(δ n+ δ m)/2
Or δ=(δ n/L1n+ δ m/L1n ˊ)/2；
Wherein: δ n=│ n1-nn │；
δ m=│ m1-mn │；
L1n --- distance between first and n-th of probe in first detection unit n；
L1n ˊ --- distance between first and n-th of probe in second detection unit m.
5. stocking straightness On-line Measuring Method according to claim 4, it is characterised in that: further include between step s2 and s3
It tests the step s2.5 of exclusion to the concave-convex defect point of stocking (2): being examined by the distance that all every two are correspondingly arranged probe
Measured value calculates in stocking (2) the detection length thickness or chord length at each test point, by thickness diameter at each test point or
Chord length and other detection dot thickness or chord length are respectively compared and seek difference, and gained difference and stocking (2) setting weight are made comparisons, if
There is a difference to be greater than or equal to stocking (2) and set weight, then determining to exist in corresponding two test points of the overproof difference cannot
For detect straightness concave defect or convex defect point；If the difference is respectively less than stocking (2) setting weight, step s3 behaviour is carried out
Make；
Thickness or chord length size at stocking (2) test point are as follows: distance sequentially subtracts this two between corresponding two probes of the test point
It pops one's head in respective and stocking (2) apart from detected value.
6. a kind of stocking curvature On-line Measuring Method of application measuring device as described in power any one of 1-3, it is characterised in that: packet
Include following steps:
S1, by stocking (2) by between the first, second detection unit, throw light that each probe (1) issues is rolled with this respectively
The intersection of material (2) surface, and the light of all probe (1) projections is in a measurement plane；
S2, by each probe (1) detection of first detection unit n and second detection unit m respectively to stocking (2) surface away from
From, and counting beginning is denoted as by stocking the same end, sequentially record two groups of each probes of detection unit apart from detected value n1,
N2 ... nn and m1, m2 ... mn；
S3, curvature calculate: calculating each adjacent two probe (1) distance detection difference, the second measuring unit m in detection unit n
Middle each adjacent two probe distance detection difference, then calculates stocking (3) curvature W in the detection length, specific:
In two detection units, each adjacent two probe distance detection difference is respectively as follows:
Δ n1,2=n2-n1；Δ n 2,3=n3-n2；... Δ n (n-1), n=nn-n (n-1)；
Δ m1,2=m2-m1；Δ m 2,3=m3-m2；... Δ m (n-1), n=mn-n (n-1)；
Curvature W are as follows: W=(Wn+Wm)/2
Wherein: Wn=[| Δ n1,2 |+| Δ n 2,3 |+...+| Δ n (n-1), n |]/(n-1)；
Wm=[| Δ m1,2 |+| Δ m 2,3 |+...+| Δ m (n-1), n |]/(n-1).
7. stocking curvature On-line Measuring Method according to claim 6, it is characterised in that: further include between step s2 and s3
It tests the step s2.5 of exclusion to the concave-convex defect point of stocking (2): being examined by the distance that all every two are correspondingly arranged probe
Measured value calculates in stocking (2) the detection length thickness or chord length at each test point, by thickness or string at each test point
Long and other detection dot thickness or chord length are respectively compared and seek difference, gained difference and stocking (2) setting weight are made comparisons, if having
One difference is greater than or equal to stocking (2) and sets weight, then determines that presence cannot be used in corresponding two test points of the overproof difference
Concave defect or convex defect point in detection curvature；If the difference is respectively less than stocking (2) setting weight, step s3 behaviour is carried out
Make；
Thickness or chord length size at stocking (2) test point are as follows: distance sequentially subtracts this two between corresponding two probes of the test point
It pops one's head in respective and stocking (2) apart from detected value.
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| CN111288905B (en) * | 2020-03-11 | 2021-06-15 | 江苏理工学院 | Radiator copper pipe detection device |
| CN112361985A (en) * | 2020-11-23 | 2021-02-12 | 福建三钢闽光股份有限公司 | Machine vision-based blank curvature detection method |
| CN112361985B (en) * | 2020-11-23 | 2022-02-11 | 福建三钢闽光股份有限公司 | Machine vision-based blank curvature detection method |
| CN113607089B (en) * | 2021-06-23 | 2023-11-10 | 新乡市中智重工机械设备有限公司 | Profile steel bending method based on visual measurement |
| CN113607089A (en) * | 2021-06-23 | 2021-11-05 | 新乡市中智重工机械设备有限公司 | Section steel bending method based on vision measurement |
| CN113546987A (en) * | 2021-08-19 | 2021-10-26 | 广东科莱博科技有限公司 | Online detection device and online detection method for straightness of bar |
| CN116894776A (en) * | 2023-09-11 | 2023-10-17 | 广东电网有限责任公司江门供电局 | Crimping wire bending degree measuring method and system based on image stitching |
| CN116894776B (en) * | 2023-09-11 | 2024-01-23 | 广东电网有限责任公司江门供电局 | Crimping wire bending degree measuring method and system based on image stitching |
| CN117464426A (en) * | 2023-12-26 | 2024-01-30 | 常州润来科技有限公司 | Self-checking positioning copper pipe feeding system and method |
| CN117464426B (en) * | 2023-12-26 | 2024-03-05 | 常州润来科技有限公司 | Self-checking positioning copper pipe feeding system and method |
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