CN111922096B - Portable roller shape measuring instrument - Google Patents
Portable roller shape measuring instrument Download PDFInfo
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- CN111922096B CN111922096B CN202010658688.8A CN202010658688A CN111922096B CN 111922096 B CN111922096 B CN 111922096B CN 202010658688 A CN202010658688 A CN 202010658688A CN 111922096 B CN111922096 B CN 111922096B
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- roll
- laser ranging
- measuring
- roller
- ranging sensor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/12—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll camber
Abstract
The invention provides a portable roller shape measuring instrument, and belongs to the technical field of plate strip rolling processes. The measuring instrument comprises a measuring trolley, a laser ranging sensor, a data transmission device and a data recording and processing device, wherein the measuring trolley arranged on the surface of a roller is utilized by the measuring instrument to slowly translate along the length direction of the roller from one end to the other end, the laser ranging sensor continuously measures the distance between the laser ranging sensor and the surface of the roller and transmits the distance to the data recording and processing device through the data transmission device, and the data recording and processing device continuously records the measuring result and calculates and converts the roll diameter value into the roll diameter value of the roller in real time, so that the roll diameter of the roller, namely the roll shape curve, is continuously obtained. The measuring instrument for the roll shape of the roll has the advantages of small volume, light weight and easy operation, and is suitable for detecting the roll shape of the roll in an industrial production field.
Description
Technical Field
The invention relates to the technical field of strip rolling processes, in particular to a portable roller shape measuring instrument.
Background
In the production process of strip steel, the roll shape of the roll determines the strip shape quality of the strip steel to a great extent, so that the measurement of the roll shape of the roll is very important. Although the roll shape of the roll can be accurately measured by the existing numerical control grinding machine for the roll of the iron and steel enterprise, the requirement on the timeliness of roll shape measurement cannot be met, and particularly, the timeliness of hot roll shape measurement after the roll is off the machine is difficult to realize, so that the roll shape measuring instrument becomes an important device for on-site roll shape measurement.
Micrometer and gauge saddle gauges were used by strip mills to measure roll shape since the last 50 s. However, the two measuring instruments are gradually eliminated because of large structural size, insufficient measuring accuracy, small measuring range and high requirements on operators.
In recent years, some domestic enterprises jointly research and develop GX portable high-precision intelligent roller shape measuring instruments which have multiple functions and can acquire, process, store, display and print roller shape curves and the like. However, the roll shape measuring instrument is provided with four electric measuring sensors, the plurality of sensors not only increase the equipment cost, but also cause accumulated errors among the plurality of sensors, influence the measuring precision and complicate the operation. Thereafter, a DGX curve value display type high-precision intelligent roller shape instrument appears, and the instrument uses a single sensor, but has large mass and volume and is not easy to carry.
In overseas countries, the roll shape measuring instrument has been studied deeply, for example, although the roll shape measuring instrument produced in the united states, japan, switzerland, germany, etc. has many advantages such as high measuring accuracy, etc., the basic measuring principle is not changed, and the price is very high, and for a roll shape measuring instrument of rallop 3T of switzerland, the price is as high as hundreds of thousands, which is hardly accepted by small and medium-sized enterprises.
With the application of laser measurement technology in the field of high-precision measurement becoming more and more mature, the idea of utilizing the laser measurement technology to show the shape and contour of various precision equipment is emerging continuously. The method has the advantages that the guide rail is erected between two roll necks of the roll, the laser ranging sensor slides along the guide rail to realize the online measurement of the roll shape curve of the roll, but the roll usually has a length of several meters, so the requirement on the parallelism of the erected guide rail is high, the measurement precision is limited, and the method is not popularized and applied.
Disclosure of Invention
The invention provides a portable roller shape measuring instrument aiming at the problems of inconvenient operation and carrying and the like of the existing roller shape measuring instrument.
The measuring instrument comprises a measuring trolley, a laser ranging sensor, a data transmission device and a data recording and processing device, wherein the measuring trolley is arranged on the surface of a roller, the laser ranging sensor is arranged on the measuring trolley, the laser ranging sensor is connected with the data transmission device, and data are transmitted to the data recording and processing device through the data transmission device.
The measuring trolley consists of a frame and four directional wheels, the four directional wheels are respectively symmetrically arranged at four corners of the rectangular frame and aligned pairwise, the rotation axes of the four directional wheels are parallel to each other, each directional wheel is independently connected with the frame, and the distance L between the rotation axes of the two directional wheels along the running direction of the trolley3150mm-500mm, the distance L between the geometric centers of the two orientation wheels along the direction of the rotation axis of the orientation wheels1The diameter of the roller is 150mm-500mm, and a directional wheel on the measuring trolley is in contact with the roller surface and rolls along the roller surface.
The width of the directional wheel is b1The radius of the outer edge of the wheel is r1The profile of the rolling surface is designed to be a radiusIs r2A standard circular arc shape of (a), and b1/2<r2<r1The orientation wheel uses the arc to make point contact with the surface of the roller, and the contact point changes with the diameter of the roller.
The laser ranging sensor is arranged on a rectangular frame of the measuring trolley, and the vertical distance between the laser ranging reference point of the laser ranging sensor and the rotation axis of the directional wheel is L in the vertical position2，L2>r1The distance between the laser ranging sensor and the surface of the roller is L; when 1 laser ranging sensor is installed, the laser ranging sensor is arranged on the geometric midpoint of the rectangular vehicle frame at the same distance with the four directional wheels, and when 2 laser ranging sensors are installed, the 2 laser ranging sensors are respectively arranged on the midpoints of the rotation axes of the two directional wheels at the planar position.
The data transmission device is one of a wired transmission device or a wireless transmission device.
The data recording and processing device is a notebook computer or an electronic device with data recording and processing functions, and after receiving the data transmitted by the data transmission device, the data recording and calculation are carried out, and the continuous measured value of the L is converted into the roll diameter value of the roll through calculation, so that the roll diameter of the roll, namely the roll shape curve, is continuously obtained.
The calculation formula for converting the continuous measurement values of L into roll diameter values of the rolling rolls by calculation is as follows:
wherein D is the roll diameter of the roll, r1For measuring the radius, r, of the outer edge of the wheels of the orienting wheel of the trolley2For measuring the profile radius, L, of the rolling surface of the directional wheel of a trolley1For the distance between the geometric centres of the two orienting wheels in the direction of the axis of rotation of the orienting wheels, L2Is the vertical distance between the laser ranging reference point of the laser ranging sensor and the rotation axis of the directional wheel.
When 1 laser ranging sensor is installedThe two ends of the roller are respectively provided with a section L3The length of the roll can not be measured, and the roll shape curve of the roll is the L of each of the two ends of the roll3Final measurement results outside of length of/2 and displayed; when 2 laser distance measuring sensors are installed, two groups of measuring results can be obtained, wherein one group is arranged at one end L of the roller3A measurement result cannot be obtained on the length of 2, and the other set is at the other end L of the roll3The length of the roll is not measured, and the roll profile is obtained at both ends3And 2, respectively adopting the measuring results of one laser ranging sensor with the measuring results on the length, adopting the average value of the measuring results of the two laser ranging sensors on other positions, synthesizing the measuring results of the whole length of the roller to obtain a final roller shape curve, and displaying the final roller shape curve.
The roll diameter range which can be measured by the portable roll shape measuring instrument is as follows:
the technical scheme of the invention has the following beneficial effects:
compared with the saddle instrument type roll shape measuring instrument widely used in the past, the portable roll shape measuring instrument of the invention omits two measuring arms, thereby having small volume and saving space. On the one hand, only one or two high-precision laser ranging sensors are used as sensing devices in the measurement principle, so that the cost is relatively low, the structure is simple, and the measurement precision is high; on the other hand, the complex relation between the equipment parameters of the measuring instrument for the roll shape and the roll shape of the roll and the distance measured by the laser ranging sensor is fully developed, and a strict positioning device is not needed. In the aspect of operation, the portable roller shape measuring instrument has low requirement on the level of an operator, and is convenient to use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the operation of the present invention;
FIG. 3 is a schematic view of the orientation wheel of the present invention in contact with a roll;
FIG. 4 is a schematic view of the contact between the arc of the orientation wheel and the rolls with different diameters;
FIG. 5 is a schematic diagram of the present invention;
FIG. 6 is a schematic view of the arrangement of four orientation wheels of the present invention;
FIG. 7 is a schematic view of the construction of the orienting wheel of the present invention;
FIG. 8 is a schematic view of the present invention with 1 laser ranging sensor installed;
fig. 9 is a schematic diagram of the present invention when 2 laser ranging sensors are installed.
Wherein: 1-measuring trolley, 2-laser ranging sensor, 3-data transmission device, 4-data recording and processing device and 5-orientation wheel.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a portable roller shape measuring instrument.
As shown in fig. 1 and 2, the measuring instrument comprises a measuring trolley 1, a laser ranging sensor 2, a data transmission device 3 and a data recording and processing device 4, wherein the measuring trolley 1 is arranged on the surface of a roller, the laser ranging sensor 2 is arranged on the measuring trolley 1, the laser ranging sensor 2 is connected with the data transmission device 3, and data is transmitted to the data recording and processing device 4 through the data transmission device 3.
As shown in figure 6, the measuring trolley 1 consists of a frame and four directional wheels 5, wherein the four directional wheels 5 are respectively symmetrically arranged at four corners of the rectangular frame and aligned pairwise, the rotation axes of the four directional wheels 5 are parallel to each other, each directional wheel 5 is independently connected with the frame, and the distance L between the rotation axes of the two directional wheels is along the running direction of the trolley3150mm-500mm, the distance L between the geometric centers of the two orientation wheels 5 in the direction of the axis of rotation of the orientation wheels1150mm-500mm, the orientation wheel 5 on the measuring trolley 1 contacts with and rolls along the surface of the roller, and in the translation process, as shown in figure 3, because the orientation wheel of the measuring trolley contacts with the surface of the roller through the arc part, when two circles contact, the two circles contactPoint on the line connecting the centers of the two circles, O being the center of the roll section, O2Is a radius r2The center of the standard circular arc shape of (1); therefore, as shown in fig. 4, the contact point between the orientation wheel of the measuring carriage and the roll surface of the roll changes with the change of the roll diameter, the contact point when the roll diameter is smaller is a, and the contact point when the roll diameter is larger is B.
As shown in FIG. 7, the width of the orientation wheel 5 is b1The radius of the outer edge of the wheel is r1Center of circle is O1The profile of the rolling surface is designed to be a section of radius r2Has a standard arc shape with a center of O2And b is1/2<r2<r1The orientation wheel uses the arc to make point contact with the surface of the roller, and the contact point changes with the diameter of the roller.
As shown in fig. 5, the laser distance measuring sensor 2 is mounted on the rectangular frame of the measuring trolley 1, and the vertical distance between the laser distance measuring reference point of the laser distance measuring sensor 2 and the rotation axis of the directional wheel is L in the vertical position2，L2>r1The distance between the laser ranging sensor 2 and the surface of the roller is L; when 1 laser range sensor 2 is installed, the laser range sensor 2 is disposed at the geometric midpoint of the rectangular frame at the same distance from the four directional wheels 5 as shown in fig. 8, and when 2 laser range sensors 2 are installed, the 2 laser range sensors 2 are disposed at the midpoints of the rotation axes of the two directional wheels as shown in fig. 9, respectively, at the planar position.
The data transmission device 3 is one of a wired transmission device or a wireless transmission device.
The data recording and processing device 4 is a notebook computer or an electronic device with data recording and processing functions, and performs data recording and calculation after receiving the data transmitted from the data transmission device 3, and converts the continuous measurement value of the L into a roll diameter value of the roll through calculation, thereby continuously obtaining the roll diameter of the roll, i.e. a roll shape curve.
The calculation formula for converting the continuous measurement values of L into roll diameter values of the rolling rolls by calculation is as follows:
wherein D is the roll diameter of the roll.
When 1 laser ranging sensor 2 is installed, two ends of the roller are respectively provided with a section L3The length of the roll can not be measured, and the roll shape curve of the roll is the L of each of the two ends of the roll3Final measurement results outside of length of/2 and displayed; when 2 laser distance measuring sensors 2 are installed, two sets of measurement results can be obtained, one set being at one end L of the roll3A measurement result cannot be obtained on the length of 2, and the other set is at the other end L of the roll3The length of the roll is not measured, and the roll profile is obtained at both ends3And 2, respectively adopting the measuring results of one laser distance measuring sensor 2 with the measuring results on the length, adopting the average value of the measuring results of the two laser distance measuring sensors 2 on other positions, synthesizing the measuring results of the whole length of the roller to obtain a final roller shape curve, and displaying the final roller shape curve.
The roll diameter range which can be measured by the portable roll shape measuring instrument is as follows:
the measuring range of the roll diameter is D >720mm, and the method is suitable for measuring the roll shape of the hot rolling support roll and the working roll.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A portable roller shape measuring instrument is characterized in that: the device comprises a measuring trolley (1), a laser ranging sensor (2), a data transmission device (3) and a data recording and processing device (4), wherein the measuring trolley (1) is placed on the surface of a roller, the laser ranging sensor (2) is installed on the measuring trolley (1), the laser ranging sensor (2) is connected with the data transmission device (3), and data are transmitted to the data recording and processing device (4) through the data transmission device (3);
the measuring trolley (1) is composed of a frame and four directional wheels (5), the four directional wheels (5) are symmetrically arranged at four corners of the rectangular frame respectively and aligned pairwise, the rotation axes of the four directional wheels (5) are parallel to each other, each directional wheel (5) is independently connected with the frame, and the distance L between the rotation axes of the two directional wheels is equal to the distance L between the rotation axes of the two directional wheels along the running direction of the trolley3150mm-500mm, the distance L between the geometric centers of the two orientation wheels (5) in the direction of the axis of rotation of the orientation wheels1The diameter is 150mm-500mm, and a directional wheel (5) on the measuring trolley (1) is contacted with the roll surface of the roll and rolls along the roll surface of the roll;
the width of the directional wheel (5) is b1The radius of the outer edge of the wheel is r1The profile of the rolling surface is designed to be a section of radius r2A standard circular arc shape of (a), and b1/2<r2<r1The orientation wheel utilizes the arc to carry out point contact with the surface of the roller, and the contact point changes along with the change of the diameter of the roller;
the laser ranging sensor (2) is arranged on a rectangular frame of the measuring trolley (1), and the vertical distance between the laser ranging reference point of the laser ranging sensor (2) and the rotation axis of the directional wheel is L in the vertical position2，L2>r1Wherein r is1In order to measure the radius of the outer edge of the directional wheel (5) of the trolley, the distance between the laser ranging sensor (2) and the surface of the roller is L; when 1 laser ranging sensor (2) is installed, the laser ranging sensor (2) is arranged on the geometric midpoint of the rectangular frame at the same distance with the four directional wheels (5) on the plane position, and when 2 laser ranging sensors (2) are installed, the 2 laser ranging sensors (2) are respectively arranged on the midpoints of the rotation axes of the two directional wheels on the plane position.
2. The portable roller shape measuring instrument according to claim 1, wherein: the data transmission device (3) is one of a wired transmission device or a wireless transmission device.
3. The portable roller shape measuring instrument according to claim 1, wherein: the data recording and processing device (4) is an electronic device with data recording and processing functions, and after receiving data transmitted by the data transmission device (3), data recording and calculation are carried out, and continuous measurement values of the distance L between the laser ranging sensor (2) and the roll surface of the roll are converted into roll diameter values of the roll through calculation, so that the roll diameter of the roll, namely a roll shape curve, is continuously obtained.
4. The portable roller shape measuring instrument according to claim 3, wherein: the data recording and processing device (4) is a notebook computer.
5. The portable roller shape measuring instrument according to claim 3, wherein: the calculation formula for converting the continuous measurement value of the distance L between the laser ranging sensor (2) and the roll surface of the roll into the roll diameter value of the roll through calculation is as follows:
wherein D is the roll diameter of the roll, r1For measuring the radius r of the outer edge of the wheel of the directional wheel (5) of the trolley2For measuring the profile radius, L, of the rolling surface of the directional wheel of a trolley1Is the distance between the geometric centers of the two orientation wheels (5) in the direction of the axis of rotation of the orientation wheels, L2Is the vertical distance between the laser ranging reference point of the laser ranging sensor (2) and the rotation axis of the directional wheel.
6. The portable roller shape measuring instrument according to claim 1, wherein: when 1 laser ranging sensor (2) is installed, two ends of the roller are respectively provided with a section L3The length of the roll can not be measured, and the roll shape curve of the roll is the L of each of the two ends of the roll3Final measurement results outside of length of/2 and displayed; when in useWhen 2 laser ranging sensors (2) are installed, two groups of measuring results are obtained, wherein one group of measuring results is arranged at one end L of the roller3A measurement result cannot be obtained on the length of 2, and the other set is at the other end L of the roll3The length of the roll is not measured, and the roll profile is obtained at both ends3The length of each roller is measured by adopting the measuring result of one laser ranging sensor (2) with the measuring result, the average value of the measuring results of the two laser ranging sensors (2) is adopted at other positions, and the measuring results of the whole length of the roller are synthesized to obtain a final roller shape curve and displayed; wherein L is3Is the distance between the axes of rotation of the two orienting wheels.
7. The portable roller shape measuring instrument according to claim 1, wherein: the roll diameter range which can be measured by the portable roll shape measuring instrument is as follows:
wherein D is the roll diameter of the roll, r2For measuring the profile radius, L, of the rolling surface of the directional wheel of a trolley1A distance between geometric centers of the two orientation wheels (5) in the direction of the axis of rotation of the orientation wheels, b1The width of the directional wheel (5) is wide.
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Families Citing this family (4)
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| CN113639660B (en) * | 2021-08-10 | 2024-01-26 | 广东省特种设备检测研究院惠州检测院 | Comprehensive detector and measuring method for accurately measuring geometric dimensions of pressure-bearing special equipment |
| CN113714308B (en) * | 2021-09-02 | 2022-04-08 | 北京科技大学 | Portable roller shape and roller temperature measuring instrument |
| CN114112908A (en) * | 2021-11-05 | 2022-03-01 | 河北中重冷轧材料有限公司 | Automatic roll checkout stand in duplex position |
| CN114505356A (en) * | 2022-03-07 | 2022-05-17 | 山东钢铁股份有限公司 | Measuring device and measuring method for roll shape of plate and strip mill |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089949A (en) * | 1996-09-12 | 1998-04-10 | Mitsubishi Heavy Ind Ltd | Measuring apparatus for roll profile |
| JPH11101628A (en) * | 1997-09-25 | 1999-04-13 | Sumitomo Metal Ind Ltd | Roll profile measuring device |
| DE19753028A1 (en) * | 1997-11-18 | 1999-05-20 | Axel Dipl Ing Helmerth | Measuring trolley for rotationally symmetric components |
| CN2709930Y (en) * | 2003-11-24 | 2005-07-13 | 河南省商丘市计量测控研究所 | Portable high precision intelligent roller-shape measuring instrument |
| KR20120070376A (en) * | 2010-12-21 | 2012-06-29 | 주식회사 포스코 | Apparatus for measuring wear profile of rolling roll |
| CN204148248U (en) * | 2014-06-17 | 2015-02-11 | 高庆 | A kind of roll on-line measurement instrument |
-
2020
- 2020-07-09 CN CN202010658688.8A patent/CN111922096B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089949A (en) * | 1996-09-12 | 1998-04-10 | Mitsubishi Heavy Ind Ltd | Measuring apparatus for roll profile |
| JPH11101628A (en) * | 1997-09-25 | 1999-04-13 | Sumitomo Metal Ind Ltd | Roll profile measuring device |
| DE19753028A1 (en) * | 1997-11-18 | 1999-05-20 | Axel Dipl Ing Helmerth | Measuring trolley for rotationally symmetric components |
| CN2709930Y (en) * | 2003-11-24 | 2005-07-13 | 河南省商丘市计量测控研究所 | Portable high precision intelligent roller-shape measuring instrument |
| KR20120070376A (en) * | 2010-12-21 | 2012-06-29 | 주식회사 포스코 | Apparatus for measuring wear profile of rolling roll |
| CN204148248U (en) * | 2014-06-17 | 2015-02-11 | 高庆 | A kind of roll on-line measurement instrument |
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