CN111230060A - Non-origin fixed-length measurement and cutting system for continuous casting billet and fixed-length calculation method - Google Patents
Non-origin fixed-length measurement and cutting system for continuous casting billet and fixed-length calculation method Download PDFInfo
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- 238000005520 cutting process Methods 0.000 title claims abstract description 217
- 238000009749 continuous casting Methods 0.000 title claims abstract description 194
- 238000005259 measurement Methods 0.000 title claims description 21
- 238000004364 calculation method Methods 0.000 title claims description 12
- 238000012545 processing Methods 0.000 claims abstract description 33
- 238000004513 sizing Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims description 9
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
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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
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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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
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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Abstract
The invention relates to a non-origin fixed-length measuring and cutting system and a fixed-length calculating method for a continuous casting billet, and belongs to the technical field of continuous casting billet cutting. A first laser range finder and a second laser range finder are arranged along the billet ejection direction of the continuous casting billet; the first laser range finder is used for tracking the real-time position of the front end face of the continuous casting billet on line and extracting real-time data of the position of the front end face of the continuous casting billet; the second laser range finder is used for tracking the real-time position of the cutting machine on line and extracting real-time data of the position of the cutting machine; the central processing unit calculates the relative position between the cutting guns of the front end surface and the cutting machine of the continuous casting billet in real time and converts the relative position into the actual length of the continuous casting billet, when the actual length is equal to the preset fixed length of the continuous casting machine system, the central processing unit sends a cutting instruction to the cutting control unit, and the cutting control unit controls the cutting guns of the cutting machine to cut the continuous casting billet in a fixed length mode. The invention eliminates the cutting sizing deviation caused by the stopping deviation of the cutting machine and improves the sizing cutting precision of the continuous casting billet.
Description
Technical Field
The invention belongs to the technical field of continuous casting billet cutting, and relates to a continuous casting billet non-origin point fixed length measuring and cutting system and a fixed length calculating method.
Background
The continuous casting machine is the core technological equipment in the field of steelmaking, and continuously casts high-temperature molten steel into continuous casting billets with certain section specifications at a certain speed. According to production requirements, the cutting machine cuts off the continuous casting billet according to the specified length.
In order to meet the requirements of customers, the yield of the final product is improved, the metal yield is improved, the enterprise benefit is improved, and the accuracy of the continuous casting billet cut to length is very important.
At present, most cutting machines at home and abroad cut to length by adopting two measuring modes of a mechanical contact length measuring roller type and a non-contact camera shooting length measuring device.
The mechanical contact length measuring roller is characterized in that a length measuring roller is arranged in a roller way area before cutting. The length measuring roller is in contact with the side surface or the lower surface of the continuous casting billet by the cylinder against the length measuring roller according to the lever principle. Through the synchronous rotation of continuous casting billet in frictional force and the casting, the length measuring roller has the encoder, through the diameter and the pivoted number of turns of encoder and length measuring roller, calculates the length that the continuous casting billet removed, and then compares according to the length of the scale length of setting for and the length that the length measuring roller that calculates, when equal, sends out the cutting instruction, carries out the scale cutting to the continuous casting billet. According to the mode, the synchronization is realized through friction between the length measuring roller and the surface of the continuous casting billet, and impurities such as oxidized iron sheets and the like exist on the surface of the continuous casting billet, so that the length measuring roller can slip. And the mounting position of the length measuring roller is fixed, and the using effect on the continuous casting billet with large width change is poor. The length measuring roller is in direct contact with the continuous casting billet and passively runs by friction, so that the length measuring roller is easy to wear and has poor precision. The length measuring roller is in direct contact with the surface of a continuous casting billet with the temperature of about 900 ℃, the environmental temperature is high, the length measuring roller and matched electrical components are easy to damage, and the maintenance amount is large. This approach is currently rarely used.
Non-contact type imaging and cutting scale is a scale cutting control method which is most applied in recent years. The camera through high-order installation acquires the continuous casting billet picture on the roll table after cutting in real time to according to the difference in temperature between the environment of high temperature continuous casting billet and normal atmospheric temperature, through image analysis technical processing, obtain the preceding tip positional information of continuous casting billet, compare with given scale length, when equal, send the cutting instruction, carry out the scale cutting to the continuous casting billet. However, the mode has high requirement on the temperature of the continuous casting billet, and when the temperature of the continuous casting billet is low, images are difficult to analyze, and accurate cutting cannot be realized. The mode is easily influenced by the operation of a workshop crane, and when the crane runs through a camera area, a high-mounted camera shakes due to vibration, so that an image is unstable and measurement is inaccurate. The mode is higher for the environment of the continuous casting billet, especially steam, fog, environment highlight and the like, and influences the image acquisition and analysis of the camera. This approach has poor results in winter and spring in the north.
In addition, in the prior art, when cutting at a non-origin point, only the position of a continuous casting blank is generally considered, and a sizing error generated when a cutting machine performs non-situ cutting is ignored, so that the cutting precision is poor, and the yield is low.
Disclosure of Invention
In view of this, the purpose of this application is to provide a continuous casting billet non-original point scale is measured and cutting system, through setting up two laser range finders and respectively on-line tracking and extracting the real-time data of continuous casting billet front end face and cutting machine position, utilizes central processing unit real-time calculation continuous casting billet front end face and the relative position between the cutting gun of cutting machine and turns into the actual length of continuous casting billet with it, has improved the scale precision of continuous casting billet.
A non-origin fixed-length measuring and cutting system for a continuous casting billet comprises a first laser range finder and a second laser range finder; the first laser range finder is used for tracking the real-time position of the front end face of the continuous casting billet on line and extracting real-time data of the position of the front end face of the continuous casting billet; the second laser range finder is used for tracking the real-time position of the cutting machine on line and extracting real-time data of the position of the cutting machine; still include with first laser range finder with the central processing unit that second laser range finder links to each other, central processing unit is used for calculating the relative position between the cutting gun of terminal surface and cutting machine before the continuous casting billet in real time and turns into the actual length of continuous casting billet with it, and when actual length equals the predetermined scale length of conticaster system, central processing unit sends cutting instruction to cutting the control unit, and the cutting gun of cutting the control unit control cutting machine carries out the scale cutting to the continuous casting billet.
Optionally, the first laser distance meter is located in front of the billet discharging side of the continuous casting billet, and an included angle between the first laser distance meter and the billet discharging direction is α.
Optionally, the second laser distance meter is located in front of or behind the ejection side of the continuous casting slab, and an included angle between the second laser distance meter and the ejection direction of the continuous casting slab is β.
Optionally, the first laser distance meter and the second laser distance meter are mounted on a terrace on the side of the roller way after cutting in a bracket manner.
Optionally, the first laser range finder and the second laser range finder are both provided with a protective cover.
Optionally, the measurement frequency of the first laser distance meter and the second laser distance meter is greater than or equal to 50 Hz.
Optionally, the first laser range finder and the second laser range finder are high-temperature laser range finders.
The invention also provides a fixed-length calculation method for non-origin cutting of the continuous casting billet, wherein a first laser range finder and a second laser range finder are arranged on the ejection side of the continuous casting billet, and the real-time position of the front end surface of the continuous casting billet is tracked on line through the first laser range finder and the real-time data of the position of the front end surface of the continuous casting billet is extracted; tracking the real-time position of the cutting machine on line through a second laser range finder and extracting real-time data of the position of the cutting machine; the relative position between the front end surface of the continuous casting billet and a cutting gun of a cutting machine is calculated in real time through a central processing unit and converted into the actual length L of the continuous casting billetsWill find the actual length LsComparing the length L with the preset length L of the continuous casting machine system in real time, and when the length L is equal to the preset length L of the continuous casting machine systemsWhen the cutting instruction is equal to L, the central processing unit sends a cutting instruction to the cutting control unit, and the cutting control unit controls the cutting control unitAnd a cutting gun of the cutting machine performs fixed-length cutting on the continuous casting billet.
Optionally, the central processing unit processes real-time measurement data of the first laser range finder and the second laser range finder in real time, and converts the measurement data into the actual length L of the continuous casting billetsWhen the actual length L issWhen the length is equal to the preset fixed length L of the continuous casting machine system, the central processing unit sends a cutting instruction to the cutting control unit.
Optionally, the actual length L of the slab is determined by calculating the projection distance of the slab front end face and the cutting gun of the cutting machine on the slab axiss。
Optionally, the projection distance L of the cutting gun of the cutting machine and the measuring surface of the cutting machine on the axis of the continuous casting billet is determined according to the projection distance L of the cutting gun of the cutting machine and the measuring surface of the cutting machine on the axis of the continuous casting billetgDetermining the actual length L of the continuous casting billet according to the projection distance of the front end surface of the continuous casting billet and the measuring surface of the cutting machine on the axis of the continuous casting billetfDetermining the actual length L of the strands＝Lg+Lf。
Optionally, the projection distance L of the front end surface of the continuous casting billet and the measuring surface of the cutting machine on the axis of the continuous casting billet along the billet discharging direction of the continuous casting billetf＝L5×cosβ-L0-L4Xcos α, wherein L4Is the distance L between the first laser range finder and the front end surface of the continuous casting billet5Is the distance between the second laser distance meter and the measuring surface of the cutting machine, L0For the projection distance of first laser range finder and second laser range finder on the continuous casting billet axis, α is the contained angle between first laser range finder and the continuous casting billet ejection direction, and β is the contained angle between second laser range finder and the continuous casting billet ejection direction.
Optionally, the actual length L of the slabs＝Lg+L5×cosβ-L0-L4Xcos α, wherein LgThe projection distance L of the measuring surface of the cutting gun of the cutting machine and the cutting machine on the axis of the continuous casting billet4Is the distance L between the first laser range finder and the front end surface of the continuous casting billet5Is the distance between the second laser distance meter and the measuring surface of the cutting machine, L0Is a first laser range finder and a second laser range finderProjection distance on the continuous casting billet axis, α is the contained angle between first laser range finder and the continuous casting billet ejection direction, and β is the contained angle between second laser range finder and the continuous casting billet ejection direction.
The invention has the beneficial effects that:
1. according to the invention, the second laser distance meter used for tracking the real-time position of the cutting machine on line and extracting the real-time data of the position of the cutting machine is arranged, so that the continuous casting billet sizing precision deviation caused by inaccurate (not at the original point position) cutting machine stop position is eliminated, the cutting precision deviation caused by the inaccurate cutting machine stop position deviation is further eliminated, and the continuous casting billet sizing cutting precision is improved.
2. According to the invention, the protective cover for protecting the laser range finder is arranged, so that the laser range finder can adapt to the measurement of high-temperature, water vapor and dusty environments, and the application range of the laser range finder is widened.
3. Compared with the non-contact camera sizing in the prior art, the invention has the advantages of high speed, easy calibration, high sizing precision, high yield, environmental light interference resistance, strong environmental adaptability, low failure rate, less maintenance, stability and reliability by adopting laser ranging.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a non-origin point fixed length measurement schematic diagram of a continuous casting billet;
FIG. 2 is a schematic diagram of a system for laser sizing and non-origin cutting of a slab.
Reference numerals: cutting machine 1, continuous casting billet 2, first laser range finder 3, second laser range finder 4, central processing unit 5, cutting control unit 6.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, a method for calculating the non-origin cutting length of a continuous casting slab, a first laser distance meter 3 and a second laser distance meter 4 are arranged on the casting side of the continuous casting slab 2, and the first laser distance meter 3 is used for online measurementTracking the real-time position of the front end surface of the continuous casting billet 2 and extracting real-time data of the position of the front end surface of the continuous casting billet 2; tracking the real-time position of the cutting machine 1 on line through a second laser range finder 4 and extracting real-time data of the position of the cutting machine 1; the relative position between the front end face of the continuous casting slab 2 and the cutting gun of the cutting machine 1 is calculated in real time by the central processing unit 5 and converted into the actual length L of the continuous casting slab 2sWill find the actual length LsComparing the length L with the preset length L of the continuous casting machine system in real time, and when the length L is equal to the preset length L of the continuous casting machine systemsWhen becoming L, central processing unit 5 sends cutting instruction to cutting the control unit 6, and cutting control unit 6 control cutting machine 1's cutting gun carries out the scale cutting to continuous casting billet 2.
Further, the actual length L of the continuous casting slab 2 in the direction of the slab discharge of the continuous casting slab 2s＝Lg+L5×cosβ-L0-L4Xcos α, wherein LgThe projection distance L of the measuring surface of the cutting gun of the cutting machine 1 and the cutting machine 1 on the axis of the continuous casting billet 24Is the distance L between the first laser distance meter 3 and the front end face of the continuous casting slab 25Is the distance, L, between the second laser distance meter 4 and the measuring surface of the cutting machine 10For the projection distance of first laser range finder 3 and second laser range finder 4 on the continuous casting billet axis, α is the contained angle between first laser range finder 3 and the 2 casting billet orientation of continuous casting billet, β is the contained angle between second laser range finder 4 and the 2 casting billet orientation of continuous casting billet.
The principle of the sizing calculation method of the invention is as follows: the front end face of the continuous casting billet 2 and the cutting machine 1 are accurately measured (the error is within 1 mm) through two high-precision laser range finders, and the real-time accurate position of the front end face of the continuous casting billet 2 and the cutting machine 1 is obtained. And (3) carrying out certain mathematical and geometric calculation according to the position relation of the 2 laser range finders, the measured front end surface of the continuous casting blank 2 and the real-time accurate position of the cutting machine 1 to obtain the accurate length between the front end surface of the continuous casting blank 2 and the cutting gun.
The data processing method comprises the following steps: the central processing unit 5 calculates and analyzes real-time position signals of the front end surface of the continuous casting billet 2 and the cutting machine 1 which are respectively measured by the first laser range finder 3 and the second laser range finder 4 according to the sizing calculation method of the invention, converts the measured data into the actual length of the continuous casting billet 2, and sends a cutting instruction to the cutting control unit 6 when the actual length is equal to the sizing length preset by the continuous casting machine system; the cutting control unit 6 controls the cutting gun of the cutting machine 1 to start cutting the casting blank meeting the sizing requirement.
The invention also provides a non-origin fixed-length measuring and cutting system for the continuous casting billet, wherein a first laser range finder 3 and a second laser range finder 4 are arranged along the billet ejection direction of the continuous casting billet 2; the first laser range finder 3 is used for tracking the real-time position of the front end face of the continuous casting billet 2 on line and extracting real-time data of the position of the front end face of the continuous casting billet 2; the second laser range finder 4 is used for tracking the real-time position of the cutting machine 1 on line and extracting real-time data of the position of the cutting machine 1; the continuous casting device further comprises a central processing unit 5 connected with the first laser range finder 3 and the second laser range finder 4, wherein the central processing unit 5 is used for calculating the relative position between the front end surface of the continuous casting billet 2 and a cutting gun of the cutting machine 1 in real time and converting the relative position into the actual length L of the continuous casting billet 2sWhen the actual length L issWhen the length L is equal to the preset fixed length L of the continuous casting machine system, the central processing unit 5 sends a cutting instruction to the cutting control unit 6, and the cutting control unit 6 controls the cutting gun of the cutting machine 1 to cut the continuous casting slab 2 in a fixed length mode.
In order to reduce the heat radiation of the continuous casting billet 2 to the laser range finder and facilitate the installation and maintenance of the laser range finder, the first laser range finder 3 is positioned in front of the ejection side of the roller way after the continuous casting billet 2 is cut, and the second laser range finder 4 is positioned in front of the ejection side or behind the ejection side of the roller way after the continuous casting billet 2 is cut.
In order to reduce the interference of the operation of other equipment such as a crane and the like on the laser range finder, the laser range finder is arranged on the terrace at the side edge of the roller way after cutting in a bracket mode, so that the measurement data of the laser range finder is more stable and reliable; the roller way is positioned at the side of the continuous casting billet ejection direction of the cutting machine after cutting and is used for supporting and conveying the continuous casting billet.
In order to improve the response speed of the laser range finder and further improve the precision of the continuous casting billet sizing cutting, the invention adopts the high-speed laser range finder, and the measurement frequency of the laser range finder is more than or equal to 50 Hz.
The system of the invention works according to the principle that: the two high-speed laser range finders are adopted to track and extract real-time data of the front end surface of the casting blank and the position of the cutting machine 1 on line respectively, the central processing unit 5 processes the data according to the algorithm provided by the invention, calculates the relative position between the front end surface of the casting blank and the cutting gun of the cutting machine 1 in real time and converts the relative position into the actual length of the casting blank. When actual length equals the scale length that conticaster system predetermines, send cutting instruction and give cutting the control unit 6, cutting control unit 6 control cutting machine 1's cutting gun begins to carry out the scale cutting to continuous casting billet 2.
The laser range finder adopts a high-temperature laser range finder, can adapt to high-temperature, water vapor and dusty environments, is resistant to ambient light interference, can accurately detect the high-temperature continuous casting billet 2 and the low-temperature continuous casting billet 2, and has the measurement accuracy of +/-1 mm.
The laser range finder is provided with measures for preventing high temperature, heat radiation and dust, such as a protective cover for protecting the laser range finder, and the protective cover can isolate the high temperature, the heat radiation and the dust; the protective cover can be cooled by introducing compressed air or cooling water into the protective cover, and the compressed air is introduced for dust prevention and the like.
The central processing unit 5 receives the measurement data of the laser distance measuring instrument, calculates, analyzes and processes the data according to the fixed-length calculating method and the data processing method of the invention, converts the measurement data into the actual length of the continuous casting billet 2, and sends a cutting instruction to the cutting control unit 6 when the actual length is equal to the fixed-length preset by the continuous casting machine system.
The cutting control unit 6 of the invention controls the cutting machine 1 to cut the continuous casting billet 2 to a fixed length according to the cutting instruction sent by the central processing unit 5.
The invention realizes the accurate fixed-length cutting of the continuous casting billet, the real-time data of the front end surface of the continuous casting billet 2 and the position of the cutting machine 1 are respectively tracked and extracted on line by adopting two high-speed laser distance meters, and the data detected by the laser distance meters are converted into the actual length of the continuous casting billet 2 by utilizing the central processing unit 5, thereby eliminating the cutting precision deviation caused by the stop deviation of the cutting machine 1 and improving the fixed-length cutting precision of the continuous casting billet 2.
Examples
As shown in a non-origin fixed-length measurement schematic diagram of a continuous casting billet in fig. 1, a continuous casting machine system presets a cutting fixed-length L of a continuous casting billet 2; the first laser range finder 3 and the second laser range finder 4 are arranged on the side surface of the roller way after the continuous casting billet is cut; the first laser range finder 3 measures the distance L between the first laser range finder and the front end surface of the continuous casting billet 24The second laser distance meter 4 measures the distance L between it and the measuring surface of the cutting machine 15(ii) a The actual position of the cutting machine 1 is deviated from the original position by a deviation length Ld。
For convenience of description, in the present embodiment, the first laser range finder 3 and the second laser range finder 4 are on the same plane on the measuring surface of the cutting machine 1 and the front end surface of the continuous casting slab 2. The actual installation and measurement on site may be three dimensional but the principle is the same.
In the embodiment, the included angle between the first laser range finder 3 and the continuous casting billet 2 in the billet discharging direction is α, the included angle between the second laser range finder 4 and the continuous casting billet 2 in the billet discharging direction is β, and the projection distance of the first laser range finder 3 and the second laser range finder 4 on the axis of the continuous casting billet is L0(ii) a The projection distance of the cutting gun of the cutting machine 1 and the measuring surface of the cutting machine 1 on the axis of the continuous casting billet 2 is Lg。
Projection distance L of measuring surface of second laser range finder 4 and cutting machine 1 on axis of continuous casting slab1＝L0+L2＝L5×cosβ；
Projection distance L of front end faces of first laser range finder 3 and continuous casting billet 2 on axis of continuous casting billet3＝L4×cosα；
Actual distance L between the front end face of the continuous casting 2 and the measuring surface of the cutting machine 1f：
Lf＝L2-L3＝L1-L0-L3＝L5×cosβ-L0-L4×cosα；
Actual length L of the cast strand 2s：
Ls＝Lg+Lf＝Lg+L5×cosβ-L0-L4×cosα；
When the actual length Ls of the continuous casting billet 2 is equal to the preset fixed length L of the continuous casting machine system, namely LsWhen becoming L, central processing unit 5 sends out cutting instruction to cutting control unit 6, and cutting control unit 6 control cutting machine 1's cutting gun begins to cut continuous casting billet 2.
As shown in fig. 2, the system schematic diagram of laser sizing measurement and non-origin cutting of a continuous casting billet has the working principle that: the first laser range finder 3 measures the distance L between the first laser range finder and the front end surface of the continuous casting billet 24The second laser distance measuring device 4 measures the actual position L of the measuring surface of the cutting machine 15The real-time measured data of the two laser range finders are transmitted to the central processing unit 5 through a special cable, the central processing unit 5 calculates and analyzes the data, and when the calculated actual length L of the continuous casting billet 2sEqual to the cutting length L of the continuous casting slab 2 preset by the continuous casting machine system, i.e. LsWhen L, the central processing unit 5 issues a cutting instruction to the cutting control unit 6. The cutting control unit 6 controls the cutting gun of the cutting machine 1 to start cutting the continuous casting slab 2 to a fixed length.
The laser range finder adopts a high-temperature laser range finder, can adapt to high temperature, water vapor and dusty environment and resist ambient light interference, has the measurement frequency of more than 50Hz, can accurately detect the continuous casting billet 2, has the measurement precision of +/-1 mm, and is not influenced by the temperature of the front end surface of the continuous casting billet 2.
The method comprises the steps of accurately measuring the front end surface of the continuous casting billet 2 and the cutting machine 1 by a high-precision laser range finder (the error is within 1 mm), and obtaining the real-time accurate positions of the front end surface of the continuous casting billet 2 and the cutting machine 1; performing certain mathematical and geometric calculation according to the position relation of the 2 laser range finders and the measured real-time accurate positions of the front end surface of the continuous casting billet 2 and the cutting machine 1 to obtain the accurate length between the front end surface of the continuous casting billet 2 and the cutting gun; the scale deviation caused by inaccurate (not in the original point position) stop of the cutting machine 1 is eliminated, the scale accurate measurement of the continuous casting billet 2 is realized, and the scale accurate cutting of the continuous casting billet 2 is ensured. The method can obviously improve the sizing accuracy, the yield and the metal yield. The invention has the characteristics of high cutting and sizing precision, automatic control operation, stability, reliability, easy calibration, less maintenance and the like, the detection precision is not influenced by the temperature of the front end surface of the continuous casting billet 2, the cutting precision deviation caused by the off-position deviation of the cutting machine 1 is eliminated, and the invention can adapt to various high-temperature, water vapor, dusty and hard light environments and has strong anti-interference capability.
Finally, the above embodiments are merely provided to illustrate the technical solutions and systems of the present invention, and not to limit, such as front and back, left and right, up and down variation of the installation position of the laser detector, etc., although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides a non-initial point scale of continuous casting billet is measured and cutting system which characterized in that: the device comprises a first laser range finder and a second laser range finder; the first laser range finder is used for tracking the real-time position of the front end face of the continuous casting billet on line and extracting real-time data of the position of the front end face of the continuous casting billet; the second laser range finder is used for tracking the real-time position of the cutting machine on line and extracting real-time data of the position of the cutting machine; still include with first laser range finder with the central processing unit that second laser range finder links to each other, central processing unit is used for calculating the relative position between the cutting gun of terminal surface and cutting machine before the continuous casting billet in real time and turns into the actual length of continuous casting billet with it, and when actual length equals the predetermined scale length of conticaster system, central processing unit sends cutting instruction to cutting the control unit, and the cutting gun of cutting the control unit control cutting machine carries out the scale cutting to the continuous casting billet.
2. The non-origin fixed-length measuring and cutting system for the continuous casting billet as claimed in claim 1, wherein the first laser range finder is positioned in front of the billet discharging side of the continuous casting billet, and an included angle between the first laser range finder and the billet discharging direction is α.
3. The non-origin fixed-length measuring and cutting system for the continuously cast slab as claimed in claim 1, wherein the second laser distance measuring instrument is positioned in front of or behind the billet discharging side of the continuously cast slab, and an included angle between the second laser distance measuring instrument and the billet discharging direction is β.
4. The non-origin fixed-length measuring and cutting system for the continuous casting slab as claimed in claim 1, wherein: the first laser range finder and the second laser range finder are arranged on a terrace on the side edge of the roller way after cutting in a support mode.
5. The non-origin fixed-length measuring and cutting system for the continuous casting slab as claimed in claim 1, wherein: the first laser range finder and the second laser range finder are both provided with protective covers.
6. The non-origin fixed-length measuring and cutting system for the continuous casting slab as claimed in claim 1, wherein: the measuring frequency of the first laser range finder and the second laser range finder is more than or equal to 50 Hz.
7. A fixed length calculation method for non-origin cutting of continuous casting billets is characterized by comprising the following steps: arranging a first laser range finder and a second laser range finder on the ejection side of the continuous casting billet, tracking the real-time position of the front end surface of the continuous casting billet on line through the first laser range finder and extracting real-time data of the position of the front end surface of the continuous casting billet; tracking the real-time position of the cutting machine on line through a second laser range finder and extracting real-time data of the position of the cutting machine; the relative position between the front end surface of the continuous casting billet and a cutting gun of a cutting machine is calculated in real time through a central processing unit and converted into the actual length L of the continuous casting billetsWill find the actual length LsComparing the length L with the preset length L of the continuous casting machine system in real time, and when the length L is equal to the preset length L of the continuous casting machine systemsWhen the cutting instruction is equal to L, the central processing unit sends a cutting instruction to the cutting control unit.
8. The sizing calculation method for the non-origin cutting of the continuous casting slab as claimed in claim 7, wherein: the central processing unit processes the real-time measurement data of the first laser range finder and the second laser range finder in real time and converts the measurement data into the actual length L of the continuous casting billetsWhen the actual length L issWhen the length is equal to the preset fixed length L of the continuous casting machine system, the central processing unit sends a cutting instruction to the cutting control unit.
9. The sizing calculation method for the non-origin cutting of the continuous casting slab as claimed in claim 7, wherein: according to the projection distance L of the cutting gun of the cutting machine and the measuring surface of the cutting machine on the axis of the continuous casting billetgDetermining the actual length L of the continuous casting billet according to the projection distance of the front end surface of the continuous casting billet and the measuring surface of the cutting machine on the axis of the continuous casting billetfDetermining the actual length L of the strands＝Lg+Lf。
10. The sizing calculation method for the non-origin cutting of the continuous casting slab as claimed in claim 9, wherein: actual length L of the cast strand in the direction of the strand discharges＝Lg+L5×cosβ-L0-L4Xcos α, wherein LgThe projection distance L of the measuring surface of the cutting gun of the cutting machine 1 and the cutting machine 1 on the axis of the continuous casting billet 24Is the distance L between the first laser range finder and the front end surface of the continuous casting billet5Is the distance between the second laser distance meter and the measuring surface of the cutting machine, L0For the projection distance of first laser range finder and second laser range finder on the continuous casting billet axis, α is the contained angle between first laser range finder and the continuous casting billet ejection direction, and β is the contained angle between second laser range finder and the continuous casting billet ejection direction.
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| CN202010130674.9A CN111230060A (en) | 2020-02-28 | 2020-02-28 | Non-origin fixed-length measurement and cutting system for continuous casting billet and fixed-length calculation method |
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| CN202010130674.9A CN111230060A (en) | 2020-02-28 | 2020-02-28 | Non-origin fixed-length measurement and cutting system for continuous casting billet and fixed-length calculation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889897A (en) * | 2020-07-09 | 2020-11-06 | 曹威 | Aluminum profile cutting equipment and control method |
| CN112570670A (en) * | 2019-09-27 | 2021-03-30 | 上海宝信软件股份有限公司 | Method and system for measuring length of blank by using laser speed measuring sensor |
| CN113084109A (en) * | 2021-02-21 | 2021-07-09 | 阳春新钢铁有限责任公司 | Method for continuously correcting continuous casting infrared camera shooting sizing error on line |
| CN113275531A (en) * | 2021-04-23 | 2021-08-20 | 包头钢铁（集团）有限责任公司 | Production method for improving billet casting blank sizing qualification rate |
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2020
- 2020-02-28 CN CN202010130674.9A patent/CN111230060A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112570670A (en) * | 2019-09-27 | 2021-03-30 | 上海宝信软件股份有限公司 | Method and system for measuring length of blank by using laser speed measuring sensor |
| CN112570670B (en) * | 2019-09-27 | 2022-07-15 | 上海宝信软件股份有限公司 | Method and system for measuring length of plate blank by using laser speed measuring sensor |
| CN111889897A (en) * | 2020-07-09 | 2020-11-06 | 曹威 | Aluminum profile cutting equipment and control method |
| CN111889897B (en) * | 2020-07-09 | 2022-06-21 | 东莞市泓仁电子有限公司 | Aluminum profile cutting equipment and control method |
| CN113084109A (en) * | 2021-02-21 | 2021-07-09 | 阳春新钢铁有限责任公司 | Method for continuously correcting continuous casting infrared camera shooting sizing error on line |
| CN113275531A (en) * | 2021-04-23 | 2021-08-20 | 包头钢铁（集团）有限责任公司 | Production method for improving billet casting blank sizing qualification rate |
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