KR100955918B1 - Automatic Reform Apparatus and the Method of Chacking Device for Shape and Width of Hot Strip - Google Patents

Abstract

More particularly, the present invention relates to an apparatus and method for accurately measuring the width and shape of a hot-rolled steel sheet on a matrix, which is a virtual three-dimensional space, by constituting an encoder and a laser detector And an automatic calibrating device and an automatic calibrating method of the hot-rolled steel plate width and shape measuring device.

The automatic correcting apparatus of the present invention includes a shape correcting unit 100 for correcting the on-line position and the shape of the hot-rolled steel plate, a matrix correcting unit for correcting the matrix space as a virtual three-dimensional space, A drive control unit 400 for carrying out all the drive control of the present invention; a control unit 400 for controlling the width and the width of the matrix to calculate a matrix value and a shape value with feedback data of the drive control unit 400; A shape control unit 500 and a cab computer 600 having a function of monitoring and correcting the difference between the value of the width shape control unit and the actual measured value, The quality of the hot-rolled steel sheet can be improved through the correction of the width and shape of the hot-rolled steel sheet.

Hot-rolled steel sheets, width measuring instruments, calibrators, matrix calibration, encoders, lasers

Description

Technical Field [0001] The present invention relates to an automatic correction apparatus and an automatic correction method for a hot-rolled steel sheet width and shape measuring apparatus,             

1 is a schematic view showing a conventional hot-rolled steel sheet width and shape measuring instrument

Fig. 2 is a matrix diagram showing the principle of calculating the width and the flatness of the hot-rolled steel sheet using the conventional hot-rolled steel sheet width and shape measuring instrument of Fig. 1

Fig. 3 is a schematic view showing a moving state of the hot-rolled steel sheet using the conventional hot-rolled steel sheet width and shape measuring instrument of Fig. 1

Fig. 4 is a graph showing the time and height difference due to the movement of the hot-rolled steel sheet using the conventional hot-rolled steel sheet width and shape measuring device of Fig. 1

5 is an overall schematic perspective view showing the control of the rolling mill using the conventional hot-rolled steel sheet width and shape measuring device of FIG. 1

6 is an overall perspective view showing an automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention including a control unit

7 is a perspective view showing an automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention                 

8 is a perspective view showing the shape correcting unit of the automatic calibrating apparatus for the hot-rolled steel sheet width and shape measuring apparatus of the present invention

9A and 9B are a side view and a plan view showing a drive side matrix calibrating unit of the matrix correcting unit among the automatic calibrating apparatuses of the hot-rolled steel plate width and shape measuring apparatus of the present invention

FIGS. 10A to 10C are perspective views showing an operation state of a matrix calibrating unit on the operation side of the matrix correcting apparatus in the automatic calibrating apparatus for a hot-rolled steel plate width and shape measuring apparatus according to the present invention

11 is a perspective view showing a driving part of the automatic calibrating device of the hot-rolled steel sheet width and shape measuring device of the invention

12 is a cross-sectional view showing the measurement principle of the shape correcting unit of the automatic calibrating apparatus for the hot-rolled steel sheet width and shape measuring instrument of the present invention

Fig. 13 is a side view showing driving of the correction section of the matrix correcting section in the automatic calibrating apparatus for the hot-rolled steel sheet width and shape measuring apparatus of the present invention

Fig. 14 is a graph showing a calibration area of the matrix correction unit in the automatic correction apparatus of the hot-rolled steel sheet width and shape measuring apparatus according to the present invention

15 is a flowchart showing the control state of the automatic calibrating apparatus for the hot-rolled steel sheet width and shape measuring apparatus of the present invention

Description of the Related Art

3: first camera 4: second camera                 

5: laser generator 7: laser receiver

10: hot-rolled steel sheet 100: shape-

101: shape detecting sensor 105: disk

200: Driving test side matrix calibration unit 201, 251: Angle drive motor

202, 252: angle encoder 203, 253: sample drive motor

205, 255: variable width samples 207, 257: sample driving screw

250: drive-side matrix correction unit 259: light source lamp socket

300: driving unit 400:

500: width shape control unit 600: cab computer

More particularly, the present invention relates to an apparatus and method for automatically calibrating a measuring device for simultaneously measuring the width and shape of a hot-rolled steel sheet, comprising an encoder and a laser detector, The width and shape of the hot-rolled steel sheet can be improved by accurately measuring the width and shape of the hot-rolled steel sheet on a matrix, which is a virtual three-dimensional space. .

1 is a schematic view showing a conventional hot-rolled steel sheet width and shape measuring instrument. As shown in the figure, a conventional hot-rolled steel sheet width and shape measuring instrument comprises a first camera 3 installed in an upper case 2 of a frame 1, A camera unit including a second camera 4 and a laser generator 5; And a laser receiver (7) mounted on a fixture (6) fixed on the upper part of the frame (1); A detection process of collecting signals of the hot-rolled steel sheet 10 detected by the camera unit and the laser camera unit, a system process of calculating the width and shape collected in the detection process, A program for displaying the width and the shape in the form and number by the operation program and a program for allowing the driver to view the shape of the hot-rolled steel plate 10 at a desired position And a control unit 8 for simultaneously measuring the width and shape of the hot-rolled steel sheet with a single processor and a single processor that technically integrates the width and shape of the hot-rolled steel sheet 10, Maintenance of air line and other utilities is greatly simplified, and width measurement result and shape measurement It was measured and the degree of improvement is significant because real-time processing works, at the same time there was an effect of the data processing time is significantly reduced.

FIG. 2 is a matrix diagram showing the principle of calculation of the width and the flatness of the hot-rolled steel sheet using the conventional hot-rolled steel sheet width and shape measuring device of FIG. 1, wherein the after- 2 cameras 3 and 4, filtered and focused, respectively, and then converted into a video signal after being stored in the CCD. Then, the video signal is transmitted to the central processing unit of the control unit 8, The width of the hot-rolled steel sheet can be accurately detected by measuring the hot-rolled steel sheet.

FIG. 3 is a schematic view showing the movement of the hot-rolled steel sheet using the conventional hot-rolled steel sheet width and shape measuring instrument of FIG. 1, and FIG. 4 is a schematic view of the hot- The laser generator 5 and the laser receiver 7 are set as one set in the measurement of the shape of the hot-rolled steel sheet which is varied by time during on-line measurement, The laser generator 5 irradiates a laser beam onto a target object and the optical spot of the target object is imaged by the light receiving lens of the laser beam receiver 7 and imaged on the light receiving element.

Fig. 5 is an overall schematic perspective view showing the control of the rolling mill using the conventional hot-rolled steel sheet width and shape measuring device of Fig. 1, and the width and shape of the hot- .

However, the conventional hot-rolled steel sheet width and shape measuring instrument having the above-described configuration has the following problems.

First, there is a problem that there is no standard for assuring the accuracy in measuring the width and shape of the hot-rolled steel sheet by constructing a matrix which is a virtual three-dimensional space as two cameras.

Secondly, since the conventional hot-rolled steel sheet width and shape measuring apparatus are fixed on the rolling line, there is a problem in that calibration work of the measuring instrument during online work is impossible.                         

Thirdly, there is a problem that there is no way to guarantee the accuracy of the shape value in calculating the shape of the hot-rolled steel sheet after measuring the matrix coordinate values of both edge portions by the laser receiver by the shape of the hot-rolled steel sheet.

Finally, the conventional hot-rolled steel sheet width and shape measuring apparatus requires a lot of time and manpower during a calibrating operation.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a hot-rolled steel sheet width and shape measuring apparatus capable of performing a calibrating operation every time a hot- The present invention provides an apparatus and method for automatically calibrating the width and shape of a hot-rolled steel sheet and measuring the width of the hot-rolled steel sheet simultaneously and improving the quality of the hot-rolled steel sheet. .

As a means for achieving the above object, an apparatus for automatically calibrating a hot-rolled steel sheet width and shape measuring apparatus of the present invention includes a shape detecting sensor for detecting a shape of a hot-rolled steel sheet and an on- A shaft for converting the circular motion of the disk into a linear motion, a sensor fixing shaft and a disk fixing shaft for connecting the shape detecting sensor and the disk, a driving motor for rotating the disk, A shape correcting part composed of a motor fixing table for supporting the motor;

A sample driving motor fixed on the base by a motor fixing band, a sample encoder installed in the rear of the sample driving motor, a sample driving screw connected to the axes of the sample driving motor, and a sample driving screw, An angular drive motor installed to vary the height corresponding to the Y axis of the matrix coordinates, and an angle encoder for angle measurement, respectively, provided on the side of the angle drive motor. And a matrix calibration unit including an operation-side matrix calibration unit and a drive-side matrix calibration unit each having a light source lamp connected to a light source lamp socket provided on both sides of the center of the lower light source case and supplied with power;

A chain pulley coupled to one side of the wheel drive shaft, and a drive pulley coupled to one side of the wheel drive shaft; A driving unit comprising a chain connecting the chain pulleys;

A driving control unit for controlling the shape correcting unit, the matrix correcting unit, and the driving unit, respectively;

A width control unit for calculating a matrix value and a shape value from feedback data of the drive control unit;

And a cab computer having a function of monitoring and correcting the difference between the value of the width shape control unit and the actual measured value.

The method of automatically calibrating a hot-rolled steel sheet width and shape measuring apparatus of the present invention includes the steps of moving an automatic calibrating apparatus of the present invention by driving a driving motor when hot-rolled steel sheets are measured online;

Continuously moving the automatic calibrating device until the laser beam emitted from the laser generator is recognized by the shape detecting sensor of the shape correcting part, and then positively positioning the automatic calibrating device;

Transmitting a programmed step to the drive control unit for the width shape calibration by the cabin computer;

The driving control unit transmitting a width value corresponding to the step to the driving-side matrix correction unit;

Driving the sample driving motor until a signal indicating that the set width position is reached from the sample encoder is input;

In the setting of the width value, the driving-side matrix correction unit continuously drives the angle drive motor, and the angle encoder transmits the angle change value recognized by the angle encoder to the width control unit.

Calculating the X1 and Y1 using the width value and the angle change value corresponding to the step in the width shape control unit;

The values of X1 and Y1 are compared with the values of X1 'and Y1' measured by the hot-rolled steel plate width and shape measuring instrument to calibrate the matrix of the operation test side matrix;

Correcting the drive side matrix area by repeating the steps 1 to n in the same manner as the driving side matrix correcting part;

Measuring the height change value in the shape detecting sensor when the center side shape correction command is transmitted from the driver computer to the shape correcting unit;                     

Comparing the height change value measured by the shape detection sensor with the height value detected by the laser light receiver in the width shape control unit;

And a step of calibrating the width and shape of the hot-rolled steel sheet according to the program through the above comparison step.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

6 is an overall perspective view showing an automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention including a control unit, FIG. 7 is a perspective view showing an automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention, As described above, the automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention includes a shape correcting unit 100 for correcting a shape of an on-line position and a hot-rolled steel sheet, a matrix bridge capable of correcting a matrix space as a virtual three- A drive control unit 400 for carrying out all the drive control of the present invention and a drive control unit 400 for controlling the drive of the matrix by using feedback data of the drive control unit 400. [ A width control unit 500 for calculating a value and a shape value, and a control unit 500 for calculating the difference between the value of the width control unit and the actual measurement value, And a cab computer 600 having a function.

Next, the automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention will be described in more detail as follows.

First, the shape correcting unit 100 of the automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention will be described.                     

FIG. 8 is a perspective view showing a shape correcting unit of an automatic calibrating apparatus for a hot-rolled steel plate width and shape measuring apparatus according to the present invention. The shape correcting unit 100 includes a shape detecting sensor A sensor 103 for rotating the circular motion of the disk 105 into a linear motion and a sensor 103 for detecting the shape of the disk 105, A driving motor 107 for rotating the disk 105 and a sensor fixing shaft 102 and a disk fixing shaft 104 for connecting the disk 105 with the driving motor 107, And a motor fixing table 108 for supporting the motor.

The shape correcting unit 100 is installed on the base 212 of the automatic calibrating apparatus of the present invention so that the shape correcting unit 100 100 are installed in a protective box 101a and the protective box 101a is provided with two sensor guides 109 mounted on a pedestal 109a which is fixedly coupled to the base 212, And is configured to be movable up and down. A sensor fixing shaft 102 is formed in a front lower portion of the protective box 101a and one end of the shaft 103 is coupled to the sensor fixing shaft 102. The other end of the shaft 103 And is coupled to the fixed shaft 104 of the disk 105 fixedly coupled to the shaft 106 of the drive motor 107. The driving motor 107 is fixedly supported on a motor fixing base 108 which is fixedly coupled to the base 212.

FIGS. 9A and 9B are a side view and a plan view showing a drive side matrix correcting section of the matrix correcting section of the automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention. FIGS. 10A to 10C are cross- And the matrix correcting section is provided on a pair of drive sides (not shown) having the same configuration as the shape correcting section 100 in the middle, as shown in the figure, The drive side matrix correcting unit 250 is composed of a matrix correcting unit 250 and a driving side matrix correcting unit 200. The drive side matrix correcting unit 250 is fixed to the base 212 of the calibrating device by a motor fixing band 254 And a sample driving motor 256 for driving the sample driving motor 256. At this time, the sample driving motor 256 serves to vary the width value corresponding to the X-axis of the matrix coordinates shown in FIG. A sample encoder 253 is installed at the rear of the sample driving motor 256 and the axis of the sample driving motor 256 is connected to a sample driving screw 257. The sample driving screw 257 is connected to a variable- Through a ball bushing (265) connected to the ball bushing (255).

An angle drive motor 251 is provided to vary the height corresponding to the Y axis of the matrix coordinates shown in FIG. 2, and an angle encoder 252 for angle measurement is provided on the side of the angle drive motor 251.

The light source lamp 261 from which the light source 230 emits is connected to a light source lamp socket 259 provided on both sides of the center of the lower light source case 258 to receive power supply. Reference numeral 260 denotes a sample drive slide.

The configuration of the drive-side matrix correcting unit 200 is the same as that of the drive-side matrix correcting unit 250, but the reference numerals are given differently. Reference numeral 201 denotes an angle driving motor. Reference numeral 202 denotes an angle encoder. Reference numeral 203 denotes a sample encoder. Reference numeral 204 denotes a motor fixing band. Reference numeral 205 denotes a variable variable sample. Reference numeral 206 denotes a sample driving motor. Reference numeral 207 denotes a sample driving screw. A ball bushing 230, and a light source 230, respectively.

11 is a perspective view showing a driving part of the automatic calibrating device for a hot-rolled steel sheet width and shape measuring device according to the present invention. The driving part 300 for moving the automatic calibrating device of the present invention includes an off-line to on- A chain 307 for driving the automatic calibrating device of the present invention and a chain pulley 304 and chain 306 for transmitting power to the wheel 307 and a drive motor 301 as a power source are mounted on a rail 308 . This will be described in more detail as follows.

The drive unit 300 is installed in the drive unit case 303 provided below the drive-side matrix control unit 200 and below the drive-side matrix control unit 250. The drive unit case 303 A drive motor 301 is fixedly mounted on the motor base 302 and a chain pulley 304 is fixedly coupled to the shaft of the drive motor 301. The motor base 302 is fixed to the motor base 302, A chain pulley 305a is coupled and fixed to one side of the driving shaft 305 of the wheel 307. The chain pulleys 304 and 305a are connected by a chain 306. [

6, a drive control unit 400 for controlling all the motions of the automatic correcting apparatus of the present invention, a width control unit 400 for calculating a matrix value and a shape value from the feedback data of the drive control unit 400, The configuration of the cab computer 600 having the function of monitoring and correcting the difference between the value of the width control unit and the actual measured value can be easily achieved by those skilled in the art In addition, since it has been described in some degree in the prior art, it will be omitted, and will be described in a functional description in the following description of the operation.

Hereinafter, the operation of the automatic calibrating apparatus for the hot-rolled steel sheet width and shape measuring apparatus of the present invention will be described.

6, when the hot-rolled steel sheet 10 is measured on-line, the automatic calibrating device for the hot-rolled steel sheet width and shape measuring device falls off-line and is in a standby state, The driving motor 301 of the driving unit 300 is driven by the driving control unit 400 to move the automatic calibrating apparatus of the present invention. Is continued until the shape detecting sensor 101 of the shape correcting unit 100 recognizes the laser beam 5a generated from the generator 5 (shown in Fig. 1). Next, the position of the laser beam 5a recognized by the shape detecting sensor 101 is on-line, where the automatic correcting apparatus of the present invention is positively positioned.

In this state, the cabin computer 600 transmits the steps (1 to n) programmed for each width to the drive control unit 400 as shown in FIG. 14 for width shape calibration, And transmits the width value corresponding to the step to the driving-side matrix calibrating unit 200. [

Here, the meaning of the symbols shown in FIG. 13 and FIG. 14 will be additionally described as follows.

In the figure, the maximum width (MaW) and the minimum width (MiW) that can be calibrated are the widths of the hot-rolled steel sheets that can be worked online, and the current roll table height (Pass line) ) And the maximum calibrated height (Max line) are the height variations generated when making the hot-rolled steel sheet on-line. The maximum width length (MaL) and the minimum width length (MiL) The X, Y coordinates of the entire matrix area of the portion excluding the width (MiW) which can be corrected to the minimum at the maximum correctable width (MaW) are made and the center height value (M) The height change value from the height (Min line) to the height (Max line) which can be corrected to the maximum.

First, the calibration of the matrix coordinate values X1 and Y1 in the actual driving side will be described as follows.

The driving-side matrix calibrator 200, which receives the width value corresponding to the step from the driving controller 400, receives the sample driving motor 206 from the sample encoder 203 until a signal indicating the set width position is received. And when the width value is set, the operation-side matrix calibrating unit 200 continuously drives the angle drive motor 201 from the Min line to the Max line. At this time, the angle encoder 202 transmits the recognized angle change value [theta] to the width shape control unit 500. [ Accordingly, in the width control unit 500, by using the width value corresponding to the step and the angle change value (?) Measured by the angle encoder 202 which changes in the current real time, Lt; RTI ID = 0.0 > Y1. ≪ / RTI >

The X1 and Y1 values set in the automatic calibrating apparatus of the hot-rolled steel sheet width and shape measuring apparatus of the present invention are compared with X1 'and Y1' values measured by the current hot-rolled steel sheet width and shape measuring apparatus. As shown in FIG. 13, this process is repeated until the n step, and the driving test matrix area corresponding to the width from the Dap to the Dip and the height from the Min line to the Max line is corrected.

Further, the correction of the values of the matrix coordinate values X2 and Y2 on the drive side is also repeated from step 1 to step n in the same manner as in the above-described operation-side matrix correcting section, and as shown in Fig. 13, Calibrate the drive side matrix area corresponding to the height from the Min line to the Max line.

Then, the X2 and Y2 values set in the automatic calibrating apparatus of the hot-rolled steel sheet width and shape measuring apparatus are compared with the X2 'and Y2' values measured in the hot-rolled steel sheet width and shape measuring apparatus.

Next, in order to calibrate the shape of the center side of the automatic calibrating apparatus of the width and shape measuring apparatus of the hot-rolled steel sheet, when the center side shape calibrating command is transmitted from the driver computer 600 to the shape calibrating unit 100, The driving motor 107 of the shape correcting unit 100 is driven to continuously drive the disk 105. [

12 is a cross-sectional view showing the principle of measurement of the shape correcting unit of the apparatus for measuring the width and shape of a hot-rolled steel sheet according to the present invention. Circular motion of a continuously driven disk 105 is connected to a shaft 103, (101) in a straight line. The height change value of the shape detecting sensor 101 with respect to the circular motion of the disk 105 is a value obtained by recognizing the laser beam 5a emitted from the laser generator 5 by the laser beam receiver 7, And is output as shown in the lower graph of FIG.

As described above, in the automatic calibrating device for the hot-rolled steel sheet width and shape measuring apparatus, the height M set by the rotation angle changed by the driving of the continuous disk 105 and the height M detected by the laser beam radiator 7 of the hot- And the width height control unit 500 compares the changed height M '.

As described above, the automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus according to the present invention is configured to be capable of continuously changing the X1 (X1 , Y1, X2, Y2, and M, the width and shape of the hot-rolled steel sheet measure the width and shape of the hot-rolled steel sheet simultaneously, and measure the measured values X1 ', Y1' And then sent to the width shape control unit 500.

In the width control unit 500, the width of the entire matrix area excluding the width (MiW) that can be calibrated at the minimum in the width (MaW) X, and Y coordinates, and the center height value (M) makes all calibration areas from a minimum calibrated height (Min line) to a maximum calibrated height (Max line) After storing the corresponding width and shape values and simultaneously storing the measured values in real time, the width and shape are calibrated when the comparison value exceeds the allowable range.

The above-described calibrating work through the automatic calibrating apparatus of the hot-rolled steel sheet width and shape measuring apparatus is stored for each execution and is learned for optimization of the rolling line.

First, the width calculation method will be described. First, the first camera 3 and the second camera 4 of the camera unit shown in FIG. 1 are used to calculate the width of the hot- ) Detects the X1, Y1, X2, and Y2 point light sources generated by the automatic calibrating device of the width and shape measuring device of the hot-rolled steel sheet and forms an image on a CCD (not shown) in the camera. And the maximum image forming bit is 2048 bits while the light source is present.

Therefore, when the light sources of X1, Y1, X2, and Y2 produced by the automatic calibrating device of the hot-rolled steel sheet width and shape measuring device are imaged on the camera CCD, as shown in FIG. 2, And the width is measured by the Pythagorean theorem when the height (H) corresponding to the distance between the bottom surface (L) corresponding to the distance from X1 to X2 and the distance from Y1 to Y2 is expressed by Equation (3) 4, the width W is calculated.

(W) with the bottom (L) value and the height (H) value calculated in the above equation (3), the following equation (4) is obtained.

As described above, the automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus of the present invention calculates X1, Y1, X2, and Y2 values using the above-described Equations 1 and 2 with respect to the set width and angle angle, This value is the same as the actually set value. The X1, Y1, X2, and Y2 values set and calculated by the automatic calibrating device of the hot-rolled steel sheet width and shape measuring device are the values of X1 ', Y1', X2 ', and Y2' measured by the width and shape meter of the hot- The entire matrix area of the portion excluding the width (MiW) that can be compared with the minimum correctable width (MaW) that can be calibrated is corrected.

Next, the shape calculation method will be described with reference to the description of the calibration principle of the automatic calibrating device of the hot-rolled steel sheet width and shape measuring device. The X1 and Y1 values calculated by the automatic calibrating device of the present invention and both edges corresponding to the X2 and Y2 values The width control unit 500 calculates the height H of the edge of the electric field and the height of the center at every time period Ti in real time and calculates the value as follows.

In Equation (5), I denotes the length of the steel sheet during the period, hi denotes the slope (height) of the steel sheet, and Ti denotes the time period.                     

The width shape control unit 500 calculates the following equations (6a) to (6c) based on the length I of the entire steel plate obtained in the above equation (5).

Lw is the total length of the operating room side of the variation values of the values X1 and Y1 set by the driving actual test matrix correcting unit 200 and Lc is the center length of the center Ld is the total length of the drive side created by the change values of the values X2 and Y2 set by the drive side matrix correcting unit 250. lwn is the instantaneous length of the actual operation side, lcn is the instantaneous length of the center line, ldn is the drive side It is a moment length.

Therefore, the final shape data is calculated by using the following equations (7a) to (7c) for both edge and center length calculated by the width shape control unit (500).

Lc is the drive side length, Lc is the drive side length, Lc is the center line side length, Lw is the work side length, and Lc is the center side length. Ls is the standard length of the automatic calibrating device of the hot-rolled steel sheet width and shape measuring instrument.

The time period is calculated through the width control unit 500 by receiving the line speed.

As described above, the main object of the automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus of the present invention is to provide a method for automatically calibrating a width of a hot- The X and Y coordinates of the area are created and the height value M for the Max line which can be calibrated from the minimum correctable height (Min line) is set through the automatic correcting device of the present invention And to improve the quality of the width and shape of the hot-rolled steel sheet by precisely measuring the width and shape at the same time by calibrating the width and shape corresponding to all the correction areas that can occur on-line.

15 is a flowchart showing the control state of the automatic calibrating apparatus for the hot-rolled steel sheet width and shape measuring apparatus of the present invention.

As described above, according to the automatic calibrating apparatus for a hot-rolled steel sheet width and shape measuring apparatus of the present invention, it is possible to perform a calibrating operation every time a hot-rolled steel sheet width and shape measuring apparatus is required to be calibrated, It is possible to improve the quality of the hot-rolled steel sheet by accurately measuring the shape of the hot-rolled steel sheet at the same time as measuring the width and shape of the hot-rolled steel sheet corresponding to the area.

Claims (2)

A shape detecting sensor 101 for detecting the shape and on-line position of the hot-rolled steel sheet 10, a sensor guide 109 for enabling up and down movement of the shape detecting sensor 101, A sensor fixing shaft 102 and a disk fixing shaft 104 for connecting the shape detecting sensor 101 and the disk 105 and a disk fixing shaft 104 for rotating the disk 105, A shape correcting unit 100 comprising a driving motor 107 and a motor fixing table 108 for supporting the driving motor 107; Sample driving motors 206 and 256 fixed by motor fixing bands 204 and 254 on the base 212 of the calibration apparatus and sample encoders 203 and 204 installed behind the sample driving motors 206 and 256. [ And sample driving screws 207 and 257 connected to the shafts of the sample driving motors 206 and 256 and ball bushings 215 and 265 Width variable samples 205 and 255 connected to the ball bushings 215 and 265 and angle driving motors 201 and 251 provided to vary the height corresponding to the Y axis of the matrix coordinates, Angle angle angles for measuring angles 202 and 252 provided on the sides of the angle drive motors 201 and 251 and a light source lamp socket 259 provided on both sides of the center of the lower light source cases 208 and 258 An operation-side matrix correcting unit 200 having a light source lamp 261 supplied with power, Matrix calibration unit and made of a calibration unit (250); A motor base 302 fixed in a driving unit case 303 provided at a lower portion of the matrix correcting unit 303; a driving motor 301 fixed on the motor base 302; A chain pulley 305a coupled to one side of the driving shaft 305 of the wheel 307 and a chain 306 connecting the chain pulleys 304 and 305a, )Wow; A drive control unit 400 for controlling the shape correcting unit 100, the matrix correcting unit, and the driving unit 300; A width control unit 500 for calculating a matrix value and a shape value from the feedback data of the driving control unit 400; And a cab computer 600 having a function of monitoring and correcting the difference between the value of the width control unit 500 and the actual measured value. Moving the automatic calibrating device of the hot-rolled steel sheet width and shape measuring device according to the first aspect by driving the drive motor (301) when measuring the hot-rolled steel plate (10) on-line; Continuously moving and correcting the automatic correcting device until the shape detecting sensor 101 of the shape correcting unit 100 recognizes the laser beam 5a generated from the laser generator 5; The cab computer 600 transmits the steps 1 to n programmed by width to the drive control unit 400 for width shape calibration; The driving control unit 400 transmits a width value corresponding to the step to the driving-side matrix calibrating unit 200; Driving the sample driving motor 206 until the signal indicating the set width position is received from the sample encoder 203 is input to the driving-side matrix calibrating unit 200; When the width value is set, the driving-side matrix calibrating unit 200 continuously drives the angle driving motor 201, and the angular encoder 202 transmits the recognized angle change value [theta] to the width control unit 500 ; The width control unit 500 calculates X1 and Y1 using the width value corresponding to the step and the angle change value? The values of X1 and Y1 are compared with X1 'and Y1' values measured by the hot-rolled steel plate width and shape measuring device to calibrate the matrix of the operation test side matrix; Correcting the drive side matrix area by repeating steps 1 to n in the same manner as the driving side matrix correcting part; Measuring a height change value at the shape detecting sensor (101) when the center side shape correction command is transmitted from the driver computer (600) to the shape correcting unit (100); Comparing the height change value measured by the shape detecting sensor (101) with the height value detected by the laser receiver (7) in the width shape control unit (500); And a step of calibrating the width and shape of the hot-rolled steel sheet according to the program through the comparison step.

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