CN102672001B - Method for positioning edge crack of steel coil - Google Patents
Method for positioning edge crack of steel coil Download PDFInfo
- Publication number
- CN102672001B CN102672001B CN201110063762.2A CN201110063762A CN102672001B CN 102672001 B CN102672001 B CN 102672001B CN 201110063762 A CN201110063762 A CN 201110063762A CN 102672001 B CN102672001 B CN 102672001B
- Authority
- CN
- China
- Prior art keywords
- steel
- coil
- edge crack
- steel coil
- distance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a method for positioning edge crack of a steel coil. The method comprises the following steps of: measuring the inner ring radius r, the outer ring radius R, the distance H1 between the edge crack of the steel coil and the inner ring of the steel coil and the distance H2 between the edge crack of the steel coil and the outer ring of the steel coil respectively; measuring the included angles alpha, beta and gamma between the edge crack of the steel coil and the zero scale, between the head part of the strip steel and the zero scale and between the rear part of the strip steel and the zero scale respectively; and positioning the edge crack of the steel coil using a positioning model. With the method for positioning the edge crack of the steel coil, the detailed position of the edge crack of the steel coil in the length direction after the coil is opened can be obtained accurately; and furthermore, reliable data base for information transmission for production of the machine set and the defect position of later procedures are provided.
Description
Technical field
The present invention relates to a kind of location measurement method, relate in particular to a kind of method of measuring metallic article defective locations.
Background technology
In production field of metallurgy; some metallic article; for example general cold product; the location of the length direction for steel roll rim defect after uncoiling does not have related request; and some metallic article, for example electrical steel product is because of its specification thinner (between 0.23～0.65mm caliper zones), compares general cold product and more focuses on limit and split defect; therefore in order to ensure the carrying out smoothly of the relevant operation of unit, need on the length direction after uncoiling, position the edge crack of steel coil of some kind.
At present, produce unit and the location during in scroll state take extensive style control for steel roll rim defect at coil of strip, while location as needs, be all by field operation personnel by experience in addition anticipation estimate.But be thisly inaccurate by the method for manually estimating, because field operation personnel's operant level is uneven, often make anticipation result have many uncertain factors, cannot become steel roll rim defect in the data reference with steel length direction location.If positioned and defect is not split in the limit of steel coil end-face, steel roll rim defect cannot provide data supporting for what steel roll rim defect was located on steel length direction after unit uncoiling on coil of strip.
Summary of the invention
The object of this invention is to provide a kind of edge crack of steel coil localization method, use the method can be in the time being with steel in scroll state, accurately record the position with edge fault on steel, thereby the control system by this edge fault location transmission to production line, is convenient to the control of product quality of next process on production line.
The present invention, according to foregoing invention object, provides a kind of edge crack of steel coil localization method, and the coil of strip of employing is curled into by a microscler band steel, and described band steel has a head and an afterbody, and it comprises the following steps:
(1) measure respectively the inner ring radius r, outer ring radius R of coil of strip and band steel in the time batching form, edge crack of steel coil is along steel coil end-face apart from inner ring of steel coil with the distance H of outer ring
1, H
2, obtain the actual curling swell-shrink coefficient Δ S of coil of strip:
ΔS=[Π（R
2-r
2）]/（L×h）
Wherein, L is band steel length, and h is belt steel thickness, is the setting value of fixing with steel length and thickness for a certain specific coil of strip;
Arrange one by the vertical boost line in the steel coil end-face center of circle, the intersection point of described vertical boost line and steel coil end-face upper semi-circle is spent as start index 0, then measure respectively edge crack of steel coil, with steel head and with steel afterbody and described start index angle α, β and γ in the clockwise direction, then obtain edge crack of steel coil camber line compensating length l according to following model respectively
1, band steel head camber line compensating length l
2, band steel afterbody camber line compensating length l
3:
l
1=±Πα（r+H
1）/180°
l
2=±ΠβR/180°
l
3=±Πγr/180°
When the value of α, β and γ be positioned at (0,180] in scope interval time, it is corresponding l respectively
1, l
2, l
3for on the occasion of, in the time that the value of α, β and γ is positioned in (180,360) scope interval, it is corresponding l respectively
1, l
2, l
3for negative value;
(2) determine edge crack of steel coil is carried out to entrance location or outlet location, execution step (3) in the time carrying out entrance location, execution step (4) in the time exporting location;
(3) edge crack of steel coil is carried out to entrance location, determine in this step and be with steel after uncoiling respectively, edge crack of steel coil is the distance L of distance with steel afterbody on the length direction with steel
nrafter uncoiling, edge crack of steel coil is the distance L of distance with steel head on the length direction with steel with band steel
wr:
L
nr={[Π×(H
1+r)
2/1000-Π×r
2/1000]/h}/ΔS-L
2+（l
1+l
3）/1000
L
wr={[Π×R
2/1000-Π（R-H
2）
2/1000]/h}/ΔS-L
1-L
2+（l
1+l
2+l
3）/1000
Wherein, r is inner ring of steel coil radius, mm; R is coil of strip outer ring radius, mm; L is band steel length, m; H is belt steel thickness, mm; H
1for band steel is in the time batching form, the distance of edge crack of steel coil along steel coil end-face apart from inner ring of steel coil, mm; H
2for band steel is in the time batching form, the distance of edge crack of steel coil along steel coil end-face apart from coil of strip outer ring, mm; Δ S is the actual curling swell-shrink coefficient of coil of strip, l
1for edge crack of steel coil camber line compensating length, mm; l
2for band steel head camber line compensating length, mm; l
3for band steel afterbody camber line compensating length, mm; L
1for band steel head shearing displacement, m; L
2for band steel afterbody shearing displacement, m.Band steel head shearing displacement L
1with band steel afterbody shearing displacement L
2for a certain definite operation, are all the setting values of fixing;
(4) edge crack of steel coil is exported to location, determine in this step and be with steel after uncoiling respectively, edge crack of steel coil is the distance L of distance with steel afterbody on the length direction with steel
nrafter uncoiling, edge crack of steel coil is the distance L of distance with steel head on the length direction with steel with band steel
wr, then transmit it in the control system of next process:
L
nr={[Π×R
2/1000-Π×（R-H
2）
2/1000]/h}/ΔS-L
1+(l
1+l
2）/1000
L
wr={[Π×（H
1+r）
2/1000-Πr
2/1000]/h}/ΔS-L
1-L
2+(l
1+l
2+l
3）/1000
Wherein, r is inner ring of steel coil radius, mm; R is coil of strip outer ring radius, mm; L is band steel length, m; H is belt steel thickness, mm; H
1for band steel is in the time batching form, the distance of edge crack of steel coil along steel coil end-face apart from inner ring of steel coil, mm; H
2for band steel is in the time batching form, the distance of edge crack of steel coil along steel coil end-face apart from coil of strip outer ring, mm; Δ S is the actual curling swell-shrink coefficient of coil of strip, l
1for edge crack of steel coil camber line compensating length, mm; l
2for band steel head camber line compensating length, mm; l
3for band steel afterbody camber line compensating length, mm; L
1for band steel head shearing displacement, m; L
2for band steel afterbody shearing displacement, m.
In order to make the measuring process in the technical program more convenient, the present invention adopted a ruler for measuring edge crack of steel coil measure respectively the inner ring radius r of coil of strip, outer ring radius R, with steel in the time batching form edge crack of steel coil along steel coil end-face apart from inner ring of steel coil with the distance H of outer ring
1, H
2, with steel head, angle α, β and γ with steel afterbody and edge crack of steel coil and described start index.
The ruler for measuring edge crack of steel coil adopting comprises:
One cross frame, it has a center disk and four feets, and described four feets stretch out from center disk, are cross setting, and the circumference of described center disk is provided with angle index, the rod member that described feet is hollow;
Four expansion links, correspondence is located in described four feets respectively, between the tail end of described each expansion link and each feet, is respectively equipped with a flexible member;
One connection rotating shaft, it has a first end and one second end, and the first end of described connection rotating shaft is connected with the circle centre position of described center disk, and described connection rotating shaft can rotate along its how much axle center, and described connection rotating shaft is provided with a graticule axially arranging;
One tape measure, it is fixedly connected with at the circle centre position of tape measure with the second end of described connection rotating shaft.
When measurement, cross frame is put into inner ring of steel coil, realize the location, the center of circle of inner ring of steel coil, owing to being provided with flexible member between expansion link and feet, therefore cross frame can be stuck in inner ring of steel coil, and now the center of circle of center disk is exactly the center of circle of steel coil end-face.Then the rotating shaft that is rotatably connected, aligns respectively the graticule on connection rotating shaft with edge crack of steel coil, band steel head, band steel afterbody, the angle value that now in center disk, graticule is corresponding is the value of α, β and γ.Because tape measure is fixedly connected with connection rotating shaft, therefore tape measure has synchronously turned over identical angle with connection rotating shaft, now can also utilize tape measure to record inner ring radius r, the outer ring radius R of coil of strip, and same edge crack of steel coil is apart from the distance H of inner ring of steel coil and outer ring
1, H
2also can record with this ruler for measuring edge crack of steel coil.
Edge crack of steel coil localization method of the present invention, can be on the basis of current unit equipment condition, accurately calculate the length direction particular location of edge crack of steel coil defect after uncoiling, the invention process is simple, application is convenient, without existing equipment is carried out in transformation situation, the present invention can accurate Calculation limit during in scroll state with steel split defect particular location at length direction after unit uncoiling on steel, and the transmission of defective locations information is split on the limit of coil of strip in the time that current unit is produced later to next procedure, and then for this unit produce and the transmission of later process defective locations information reliable data foundation is provided.
Brief description of the drawings
Fig. 1 is the end view of coil of strip measured in edge crack of steel coil localization method of the present invention.
Fig. 2 is the flow chart of edge crack of steel coil localization method of the present invention.
The structural representation that Fig. 3 is a kind of ruler for measuring edge crack of steel coil of adopting in edge crack of steel coil localization method of the present invention.
Detailed description of the invention
As shown in Figure 1, shown the steel coil end-face through curling into steel in figure, be wherein positioned on the outer ring 1 of coil of strip with steel head 1, be positioned at steel afterbody on the inner ring 2 of coil of strip, edge crack of steel coil 3 is on certain circumference between inner ring and outer ring.For the ease of measuring, on steel coil end-face, be the vertical boost line P by the coil of strip center of circle, the intersection point of vertical boost line P and coil of strip upper semi-circle is spent to edge crack of steel coil 3, with steel head 1, be α, β and γ with steel afterbody 3 and start index angle in the clockwise direction as start index 0.
On-the-spot certain tandem mill entrance one coil of strip DS end has a limit, place to split, and as shown in Figure 2, according to the step shown in figure, edge crack of steel coil is positioned:
(1) coil of strip material loading;
(2) the inner ring radius r that adopts ruler for measuring edge crack of steel coil to measure respectively coil of strip is 254mm, and outer ring radius R is 889mm, with steel edge crack of steel coil distance H along steel coil end-face apart from inner ring of steel coil in the time batching form
1for 150mm, the distance H of edge crack of steel coil along steel coil end-face apart from outer ring
2for 485mm, edge crack of steel coil and start index angle α is in the clockwise direction 45 °, is 243 ° with steel head and start index angle β in the clockwise direction, is 54 ° with steel afterbody and start index angle γ in the clockwise direction; The length L simultaneously obtaining with steel by supplied materials Data Enter is 4449m, and the thickness with steel is 0.5mm, band steel head shearing displacement L
1for 4m, band steel afterbody shearing displacement L
2for 6m, based on above-mentioned measurement data and supplied materials information data, obtain coil of strip actual curling swell-shrink coefficient Δ S, edge crack of steel coil camber line compensating length l
1, band steel head camber line compensating length l
2, band steel afterbody camber line compensating length l
3:
ΔS=[Π（R
2-r
2）]/（L×h）=[Π（889
2-254
2）]/（4449000×0.5）=1.025
l
1=Πα（r+H
1）/180°=Π（0.15+0.254）45°/180°=0.32m
l
2=-Πβr
2/180°=-Π×0.889×243°/180°=-3.77m
l
3=Πγr
3/180°=Π×0.254×54°/180°=0.24m
(3) determine edge crack of steel coil is carried out to entrance location execution step (4);
(4) edge crack of steel coil is carried out to entrance location, determine in this step and be with steel after uncoiling respectively, edge crack of steel coil is the distance L of distance with steel afterbody on the length direction with steel
nrafter uncoiling, edge crack of steel coil is the distance L of distance with steel head on the length direction with steel with band steel
wr:
L
nr={[Π×(H
1+r)
2/1000-Π×r
2/1000]/h}/ΔS-L
2+（l
1+l
3）/1000={[Π×(150+254)
2/1000-Π×（254）
2/1000]/0.5}/1.025-6+0.32+0.24=599.58m?L
wr={[Π×R
2/1000-Π（R-H
2）
2/1000]/h}/ΔS-L
1-L
2+(l
1+l
2+l
3）/1000={[Π×(889)
2/1000-Π×（889-485）
2/1000]/0.5}/1.025-4-6+0.32-3.77+0.24=3830.9m
As shown in Figure 3, the ruler for measuring edge crack of steel coil adopting in the present embodiment comprises: cross frame, it has a center disk 31 and four feets 32, four feets 32 stretch out from center disk 31, are cross setting, and the circumference of center disk 31 is provided with angle index 34, the rod member that feet 32 is hollow, in it, be respectively equipped with expansion link 33, between expansion link 33 and feet 32, be provided with spring, make the expansion link 33 can be interior flexible at feet 32.Connection rotating shaft 35 is for connecting tape measure 36 and center disk 31, one end of connection rotating shaft 35 is connected with the circle centre position of center disk 31, and connection rotating shaft 35 can relatively rotate with central turnplate, the other end of connection rotating shaft 35 is fixedly connected with tape measure 36, in the process of rotating at connection rotating shaft 35, tape measure 36 is synchronizeed and is rotated with it, and connection rotating shaft 35 is provided with a graticule axially arranging.
This ruler for measuring edge crack of steel coil in use, cross frame is put into inner ring of steel coil, realize the location, the center of circle of inner ring of steel coil, owing to being provided with flexible member between expansion link 33 and feet 32, therefore cross frame can be stuck in inner ring of steel coil, and now the center of circle of center disk 31 is exactly the center of circle of steel coil end-face.Then the rotating shaft 35 that is rotatably connected, makes the graticule on connection rotating shaft 35 align with edge crack of steel coil, and now on central turnplate 31, the angle value of corresponding graticule is the value of α, β and γ.Because tape measure 36 is fixedly connected with connection rotating shaft 35, therefore tape measure 36 has synchronously turned over identical angle with connection rotating shaft 35, now from tape measure 6, pulls out gage outfit 61, just can record r
1, r
2and r
3.In like manner, the inner ring radius r of coil of strip, outer ring radius R, with steel in the time batching form edge crack of steel coil along steel coil end-face apart from inner ring of steel coil with the distance H of outer ring
1, H
2also can record with this ruler for measuring edge crack of steel coil.
Be noted that above enumerate only for specific embodiments of the invention, obviously the invention is not restricted to above embodiment, have many similar variations thereupon.If all distortion that those skilled in the art directly derives or associates from content disclosed by the invention, all should belong to protection scope of the present invention.
Claims (3)
1. an edge crack of steel coil localization method, the coil of strip of employing is curled into by a microscler band steel, and described band steel has a head and an afterbody, it is characterized in that, comprises the following steps:
(1) measure respectively the inner ring radius r, outer ring radius R of coil of strip and band steel in the time batching form, edge crack of steel coil is along steel coil end-face apart from inner ring of steel coil with the distance H of outer ring
1, H
2, obtain the actual curling swell-shrink coefficient Δ S of coil of strip:
ΔS=[Π（R
2-r
2）]/（L×h）
Wherein, L is band steel length, and h is belt steel thickness;
Arrange one by the vertical boost line in the steel coil end-face center of circle, the intersection point of described vertical boost line and steel coil end-face upper semi-circle is spent as start index 0, then measure respectively edge crack of steel coil, with steel head and with steel afterbody and described start index angle α, β and γ in the clockwise direction, then obtain edge crack of steel coil camber line compensating length l according to following model respectively
1, band steel head camber line compensating length l
2, band steel afterbody camber line compensating length l
3:
l
1=±Πα（r+H
1）/180°
l
2=±ΠβR/180°
l
3=±Πγr/180°
When the value of α, β and γ be positioned at (0,180] in scope interval time, it is corresponding l respectively
1, l
2, l
3get on the occasion of, in the time that the value of α, β and γ is positioned in (180,360) scope interval, it is corresponding l respectively
1, l
2, l
3get negative value;
(2) determine edge crack of steel coil is carried out to entrance location or outlet location, execution step (3) in the time carrying out entrance location, execution step (4) in the time exporting location;
(3) edge crack of steel coil is carried out to entrance location, determine in this step and be with steel after uncoiling respectively, edge crack of steel coil is the distance L of distance with steel afterbody on the length direction with steel
nrafter uncoiling, edge crack of steel coil is the distance L of distance with steel head on the length direction with steel with band steel
wr:
L
nr={[Π×(H
1+r)
2/1000-Π×r
2/1000]/h}/ΔS-L
2+（l
1+l
3）/1000
L
wr={[Π×R
2/1000-Π（R-H
2）
2/1000]/h}/ΔS-L
1-L
2+（l
1+l
2+l
3）/1000
Wherein, r is inner ring of steel coil radius, mm; R is coil of strip outer ring radius, mm; L is band steel length, m; H is belt steel thickness, mm; H
1for band steel is in the time batching form, the distance of edge crack of steel coil along steel coil end-face apart from inner ring of steel coil, mm; H
2for band steel is in the time batching form, the distance of edge crack of steel coil along steel coil end-face apart from coil of strip outer ring, mm; Δ S is the actual curling swell-shrink coefficient of coil of strip, l
1for edge crack of steel coil camber line compensating length, mm; l
2for band steel head camber line compensating length, mm; l
3for band steel afterbody camber line compensating length, mm; L
1for band steel head shearing displacement, m; L
2for band steel afterbody shearing displacement, m;
(4) edge crack of steel coil is exported to location, determine in this step and be with steel after uncoiling respectively, edge crack of steel coil is the distance L of distance with steel afterbody on the length direction with steel
nrafter uncoiling, edge crack of steel coil is the distance L of distance with steel head on the length direction with steel with band steel
wr, then transmit it in the control system of next process:
L
nr={[Π×R
2/1000-Π×（R-H
2）
2/1000]/h}/ΔS-L
1+（l
1+l
2）/1000
L
wr={[Π×（H
1+r）
2/1000-Πr
2/1000]/h}/ΔS-L
1-L
2+（l
1+l
2+l
3）/1000
Wherein, r is inner ring of steel coil radius, mm; R is coil of strip outer ring radius, mm; L is band steel length, m; H is belt steel thickness, mm; H
1for band steel is in the time batching form, the distance of edge crack of steel coil along steel coil end-face apart from inner ring of steel coil, mm; H
2for band steel is in the time batching form, the distance of edge crack of steel coil along steel coil end-face apart from coil of strip outer ring, mm; Δ S is the actual curling swell-shrink coefficient of coil of strip, l
1for edge crack of steel coil camber line compensating length, mm; l
2for band steel head camber line compensating length, mm; l
3for band steel afterbody camber line compensating length, mm; L
1for band steel head shearing displacement, m; L
2for band steel afterbody shearing displacement, m.
2. edge crack of steel coil localization method as claimed in claim 1, is characterized in that, adopts a ruler for measuring edge crack of steel coil to measure respectively the inner ring radius r, outer ring radius R, edge crack of steel coil of coil of strip apart from the distance H of inner ring of steel coil and outer ring
1, H
2, with steel head, angle α, β and γ with steel afterbody and edge crack of steel coil and described start index.
3. edge crack of steel coil localization method as claimed in claim 2, is characterized in that, the ruler for measuring edge crack of steel coil of described employing comprises:
One cross frame, it has a center disk and four feets, and described four feets stretch out from center disk, are cross setting, and the circumference of described center disk is provided with angle index, the rod member that described feet is hollow;
Four expansion links, correspondence is located in described four feets respectively, between the tail end of described each expansion link and each feet, is respectively equipped with a flexible member;
One connection rotating shaft, it has a first end and one second end, and the first end of described connection rotating shaft is connected with the circle centre position of described center disk, and described connection rotating shaft can rotate along its how much axle center, and described connection rotating shaft is provided with a graticule axially arranging;
One tape measure, it is fixedly connected with at the circle centre position of tape measure with the second end of described connection rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110063762.2A CN102672001B (en) | 2011-03-16 | 2011-03-16 | Method for positioning edge crack of steel coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110063762.2A CN102672001B (en) | 2011-03-16 | 2011-03-16 | Method for positioning edge crack of steel coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102672001A CN102672001A (en) | 2012-09-19 |
| CN102672001B true CN102672001B (en) | 2014-07-23 |
Family
ID=46804927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110063762.2A Active CN102672001B (en) | 2011-03-16 | 2011-03-16 | Method for positioning edge crack of steel coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102672001B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017784B (en) * | 2018-01-09 | 2021-02-19 | 宝山钢铁股份有限公司 | Online quality inspection device and method for end part of coiled steel coil |
| CN113340173A (en) * | 2021-06-29 | 2021-09-03 | 东风华神汽车有限公司 | Auxiliary device for measuring space assembly position of air guide pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200835563A (en) * | 2007-02-16 | 2008-09-01 | China Steel Corp | Optical system to detect the shape, holes, and edge crack of steel belt |
| CN201653321U (en) * | 2010-03-24 | 2010-11-24 | 宝山钢铁股份有限公司 | Detecting device for edge crack of steel coil |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10225705A (en) * | 1997-02-17 | 1998-08-25 | Kawasaki Steel Corp | Method for detecting edge crack of metallic strip in reversing mill and device therefor |
| JP2000171411A (en) * | 1998-12-04 | 2000-06-23 | Nkk Corp | Automatic treatment method for edge crack part in strip body |
| JP2002282914A (en) * | 2001-03-28 | 2002-10-02 | Nippon Steel Corp | Method for estimation and inspection of remaining defect on heavy plate product |
| JP3826806B2 (en) * | 2001-03-29 | 2006-09-27 | Ｊｆｅスチール株式会社 | Discharge method of defective part of steel strip |
| JP3697578B2 (en) * | 2001-06-29 | 2005-09-21 | Ｊｆｅスチール株式会社 | Method and apparatus for detecting cracks in strips |
-
2011
- 2011-03-16 CN CN201110063762.2A patent/CN102672001B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200835563A (en) * | 2007-02-16 | 2008-09-01 | China Steel Corp | Optical system to detect the shape, holes, and edge crack of steel belt |
| CN201653321U (en) * | 2010-03-24 | 2010-11-24 | 宝山钢铁股份有限公司 | Detecting device for edge crack of steel coil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102672001A (en) | 2012-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100570300C (en) | A kind of measuring method and measuring instrument of indirect measurement matched bearings pretightning force | |
| CN103884773B (en) | A kind of rim for automobile wheel automatic ultrasonic flaw-detecting method | |
| CN102672001B (en) | Method for positioning edge crack of steel coil | |
| CN102226694B (en) | Steel pipe circular cross section contour detection apparatus of electric power steel pipe tower and detection method thereof | |
| CN104043681B (en) | A kind of coil wrapper roll roll gap calibration method | |
| CN202045202U (en) | Ruler for measuring edge crack of steel coil | |
| CN109163638A (en) | A method of huge revolving cone shaped form diameter of work is measured using vertical vehicle | |
| CN206787945U (en) | A kind of carbon fiber compound cable core bending property detection device | |
| CN104128718B (en) | Metal spherical shell assembling method and be exclusively used in and implement the detection frock of the method | |
| CN206959757U (en) | Hub measuring device for windage | |
| CN103075956A (en) | Method and device for measuring thickness of amorphous strip | |
| CN207357800U (en) | A kind of S type band finishing lower mandrel members of rocking material retractable milling train | |
| CN107020300A (en) | A kind of complex correction device and complex correction method for improving coiling machine tracking accuracy | |
| CN101722324A (en) | Size control method for precision processing of pyramid sleeve and measurement clamping plate | |
| CN202083375U (en) | Contour detecting device for circular section of steel tube of steel tube tower of power tower | |
| CN211027528U (en) | On-line flattening elongation detection device for continuous annealing unit | |
| CN102706240B (en) | Method for adjusting horn mouth of circle shears by applying orthogonal method | |
| CN205079714U (en) | Portable circular arc pitch -row measuring apparatu | |
| CN110907159A (en) | Wind power blade test space positioning measurement method | |
| CN207881661U (en) | A kind of sampling tooling for pipe element spatial position measuring | |
| CN203396341U (en) | Groove curvature radius measuring instrument for ball bearing | |
| CN205981900U (en) | Test thin -walled pipe hoop tensile strength's device | |
| CN207357792U (en) | A kind of rocking material retractable milling train band finishing Horizontal cylinder plane system | |
| CN211824341U (en) | Meter counting device for film production line | |
| CN214114702U (en) | Auxiliary tool for quickly correcting hoisting of steel column |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |