CN112444195A - Measuring method for camber of finishing transverse tangent plate - Google Patents
Measuring method for camber of finishing transverse tangent plate Download PDFInfo
- Publication number
- CN112444195A CN112444195A CN201910793507.XA CN201910793507A CN112444195A CN 112444195 A CN112444195 A CN 112444195A CN 201910793507 A CN201910793507 A CN 201910793507A CN 112444195 A CN112444195 A CN 112444195A
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- China
- Prior art keywords
- steel plate
- positioning
- camber
- measuring
- surface laser
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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
-
- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- 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
- G01B11/2433—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring outlines by shadow casting
Abstract
The invention discloses a measuring method for camber of a finishing transverse tangent plate, which comprises the following steps: 1) stopping the moving steel plate, and cutting off the power of the roller way; 2) both ends of the same side of the steel plate are provided with positioning brackets; 3) starting a surface laser source positioned on a positioning bracket at one end of a steel plate, and rotating the surface laser source to enable the surface laser emitted by the surface laser source to be aligned to the target center position of a positioning target positioned on the positioning bracket at the other end of the steel plate; 4) utilizing a right-angle bend ruler to enable one side of the right-angle bend ruler to abut against the edge of the steel plate, and measuring the projection scale of the laser on the other side of the right-angle bend ruler to obtain a single-point sickle bend measurement value; 5) and after the measurement is finished, the production is resumed. The invention provides a single, quick and accurate steel plate camber measuring method.
Description
Technical Field
The invention relates to detection of camber of a plate of a hot continuous rolling finishing transverse cutting unit, in particular to a method for measuring camber of a finishing transverse cutting line plate.
Background
As shown in fig. 1, the camber is defined as the maximum distance between the concave side of the steel plate or strip and the straight line connecting the two end points of the measuring section, i.e. the deviation of the edge of one side of the steel plate or strip from the straight line. For the steel plate with the length L less than 5000mm, the measured length of the steel plate is the actual length, and for the steel plate with the length L more than or equal to 5000mm, the measured length of the steel plate is any 5000mm or the actual length of the steel plate.
Normally, the camber is measured in the finishing mass production by the wire drawing method. During detection, the wire is pulled according to the specified measurement length and the measurement position, and the maximum distance between the wire and the edge of the steel plate is measured in a tensioned state.
However, the above method has the following problems:
1) the measurement precision is low, and the measurement precision can be directly influenced by the tightness degree during wire pulling and the unevenness change (edge wave) of the edge of the steel plate;
2) the measuring personnel require to be equipped with three persons, two persons usually tighten and straighten the line to ensure the straightness, and the third person measures the camber value.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a measuring method for the camber of a finishing cross-cut line plate, and provides a single, quick and accurate measuring method for the camber of a steel plate.
In order to achieve the purpose, the invention adopts the following technical scheme:
a measuring method for camber of a finishing transverse tangent plate comprises the following steps:
1) stopping the moving steel plate, and cutting off the power of the roller way;
2) both ends of the same side of the steel plate are provided with positioning brackets;
3) starting a surface laser source positioned on a positioning bracket at one end of a steel plate, and rotating the surface laser source to enable laser emitted by the surface laser source to be aligned to a target center position of a positioning target positioned on the positioning bracket at the other end of the steel plate;
4) utilizing a right-angle bend ruler to enable one side of the right-angle bend ruler to abut against the edge of the steel plate, and measuring the projection scale of the laser on the other side of the right-angle bend ruler to obtain a single-point sickle bend measurement value;
5) and after the measurement is finished, the production is resumed.
The positioning bracket is adsorbed on the steel plate through a magnet.
The positioning support is rectangular, and two right-angled sides of the positioning support are positioning sides and are fixed at one corner of the steel plate.
According to the measuring method for the camber of the finishing transverse tangent line plate, the measuring line is determined by adopting the surface scanning laser, so that the influences of the plate shape deviation of the steel plate, the positioning error of the stay wire and the tightness of the stay wire are avoided, and the measuring accuracy is improved. By utilizing the positioning support, the reference point can be quickly and accurately determined, the measuring time is greatly shortened, the whole measuring process can be completed by a single person, and the labor load is reduced.
Drawings
FIG. 1 is a schematic view of a prior art sickle curve;
FIG. 2 is a schematic illustration of the measurement method of the present invention;
FIG. 3 is a schematic view of a laser source positioning bracket installed in the measurement method of the present invention;
FIG. 4 is a schematic view of a positioning stand for mounting a positioning target in the measuring method of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment.
Referring to fig. 2, the method for measuring camber of a finished cross-cut plate provided by the present invention includes the following steps:
1) stopping the moving steel plate, and cutting off the power of the roller way;
2) both ends of the same side of the steel plate 1 are provided with positioning brackets 2;
3) starting a surface laser source 3 on a positioning bracket 2 at one end of a steel plate 1, and rotating the surface laser source 3 to enable surface laser 5 emitted by the surface laser source to be aligned to the target center position of a positioning target 4 on the positioning bracket 2 at the other end of the steel plate 1;
4) utilizing a right-angle bend ruler 6 to enable one side of the right-angle bend ruler to abut against the edge of the steel plate 1, and measuring the projection scale of the surface laser 5 on the other side to obtain a single-point sickle bend measurement value;
5) and after the measurement is finished, the production is resumed.
The central lines of the surface laser source 3 and the positioning target 4 are accurately determined by the positioning support 2 to be at a position which is away from one side edge part of the steel plate 1 by a constant length, and the distance length is determined by the processing error of the positioning support 2 and belongs to a constant error. The 3 emergence face lasers of face laser source 5 through the 5 directions of 2 adjustment face lasers of locating support, lights the reflection of light strip on the central line of location target 4, and the centering process is accomplished, utilizes the curved chi of right angle 6 edgewise portion measurement laser 5 projection size on curved chi, measures the camber numerical value.
Preferably, the positioning bracket 2 is attached to the steel plate 1 by a magnet 7. The positioning bracket 2 ensures that the surface laser transmitter and the receiver are positioned at the same distance from the edge of the steel plate 1 within the defined measuring length, and the distance deviation value is determined by the machining size precision of the bracket. At present, the size deviation of the used measuring device is less than 0.5mm, and the precision requirement of the camber deviation measurement can be completely met.
Preferably, the positioning bracket 2 is rectangular, and is fixed at one corner of the steel plate 1 by the positioning surfaces 8 and 9 in the actual measurement process.
The errors in the measurement process are mainly: 1) in positioning, laser centering deviation; 2) reading deviation in the measuring process 3) machining error of the positioning device. The three errors are the systematic errors in the processing error of the positioning device, and have constancy. In the location, the laser centering deviation and the reading deviation in the measurement process, because the minimum scale of square is 0.5mm, consequently, measure and can satisfy 1mm precision requirement completely, contrast stay wire method, the precision improves 2 mm.
The measuring method is applied to 2050 finishing thick plate line application of a certain steel enterprise, single measurement is realized by measuring the camber, the measurement error is less than 1mm, compared with the line pulling method, the number of the measured people is reduced from 3 to 1, the measurement time is reduced from 5 to 2 minutes, and the measurement precision is improved from 3 to 1 mm.
Example 1
When a hot-rolled high-strength steel plate with the specification of 800mm 1800mm 11m and the mark of BS700MCK2 is produced on the transverse tangent line of the hot-rolled thick plate, the camber measurement is carried out on the middle part of the steel plate by using a laser projection method on line, and the measurement result is 6 mm. Meanwhile, the result was verified by using a wire drawing method, and the measurement result was 6.5 mm.
Example 2
When a hot-rolled high-strength steel plate with the specification of 800mm 1500mm 11.6m and the brand number of BS960E is produced on the transverse tangent line of the hot-rolled thick plate, the camber measurement is carried out on the middle part of the steel plate by using a laser projection method on line, and the measurement result is 3 mm. Meanwhile, the result was verified by using a wire drawing method, and the measurement result was 4 mm.
In conclusion, according to the measuring method, the camber of the steel plate is accurately and quickly measured by using surface laser scanning according to the change condition of the straightness of the long edge of the plate, so that the measuring accuracy and measuring speed are improved, the measuring time is shortened, and the yield of a unit is improved.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (3)
1. A measuring method for camber of a finishing transverse tangent plate is characterized by comprising the following steps: the method comprises the following steps:
1) stopping the moving steel plate, and cutting off the power of the roller way;
2) both ends of the same side of the steel plate are provided with positioning brackets;
3) starting a surface laser source positioned on a positioning bracket at one end of a steel plate, and rotating the surface laser source to enable the surface laser emitted by the surface laser source to be aligned to the target center position of a positioning target positioned on the positioning bracket at the other end of the steel plate;
4) utilizing a right-angle bend ruler to enable one side of the right-angle bend ruler to abut against the edge of the steel plate, and measuring the projection scale of the laser on the other side of the right-angle bend ruler to obtain a single-point sickle bend measurement value;
5) and after the measurement is finished, the production is resumed.
2. The method for measuring the camber of a finishing cross-cut sheet material of claim 1, wherein: the positioning bracket is adsorbed on the steel plate through a magnet.
3. The method for measuring the camber of a finishing cross-cut sheet material of claim 2, wherein: the positioning support is rectangular, and two right-angled sides of the positioning support are positioning sides and are fixed at one corner of the steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793507.XA CN112444195A (en) | 2019-08-27 | 2019-08-27 | Measuring method for camber of finishing transverse tangent plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793507.XA CN112444195A (en) | 2019-08-27 | 2019-08-27 | Measuring method for camber of finishing transverse tangent plate |
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| CN112444195A true CN112444195A (en) | 2021-03-05 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202048877U (en) * | 2011-03-16 | 2011-11-23 | 宝山钢铁股份有限公司 | Rapid measuring tool for thick plate camber |
| CN202719930U (en) * | 2012-06-19 | 2013-02-06 | 宝山钢铁股份有限公司 | Multifunctional high-precision steel plate measuring platform |
| CN103302111A (en) * | 2013-07-01 | 2013-09-18 | 莱芜钢铁集团有限公司 | Steel section bending online measurement device and steel section bending online measurement method |
| CN104776813A (en) * | 2015-04-15 | 2015-07-15 | 石家庄钢铁有限责任公司 | Portable bar bending degree laser measuring instrument |
| CN207300128U (en) * | 2017-08-23 | 2018-05-01 | 河南中原特钢装备制造有限公司 | A kind of material corrects detection device |
-
2019
- 2019-08-27 CN CN201910793507.XA patent/CN112444195A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202048877U (en) * | 2011-03-16 | 2011-11-23 | 宝山钢铁股份有限公司 | Rapid measuring tool for thick plate camber |
| CN202719930U (en) * | 2012-06-19 | 2013-02-06 | 宝山钢铁股份有限公司 | Multifunctional high-precision steel plate measuring platform |
| CN103302111A (en) * | 2013-07-01 | 2013-09-18 | 莱芜钢铁集团有限公司 | Steel section bending online measurement device and steel section bending online measurement method |
| CN104776813A (en) * | 2015-04-15 | 2015-07-15 | 石家庄钢铁有限责任公司 | Portable bar bending degree laser measuring instrument |
| CN207300128U (en) * | 2017-08-23 | 2018-05-01 | 河南中原特钢装备制造有限公司 | A kind of material corrects detection device |
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Application publication date: 20210305 |
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