JP3587415B2 - Roll parallelism measuring device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to parallelism displacement measurement between a plurality of rolls arranged in parallel, and more particularly, to an angle (from the parallel) between a central axis of another roll and a central axis of another roll. Declination).
[0002]
[Prior art]
BACKGROUND ART A facility for continuously transporting a strip such as a steel plate is provided with a plurality of transport rolls, and is used for supporting or guiding the strip, or for feeding and driving the strip. If the axes of these transport rolls are not parallel to each other, the strip cannot be transported in a desired direction, and the strip may meander, or the strip may have wrinkles or flaws. In some cases, the strip may be broken, which may cause problems in production and quality of the strip.
[0003]
For example, as shown in FIG. 7, when a strip-shaped steel sheet is transported, supported or guided by four rolls 1s, 1m1 to 1m3 at a certain place, the attitude of the roll 1s where the steel sheet first reaches here is shown. Are set so as to be substantially parallel to a conveying roll (not shown) on the upstream side in the moving direction of the steel sheet, and the rolls 1m1 to 1m3 are set to be parallel to the roll 1s. In the four rolls 1s, 1m1 to 1m3, the roll 1s is a reference roll. The shape of the roll is determined by the type and size of the object to be conveyed (steel plate), the tension applied to the object to be conveyed, the content of processing on the object to be conveyed, and the like. In the roll shape, for example, a straight line shown as (1), a sine crown shown as (2), a taper crown shown as (3) or a narrow body shown as (4) in FIG. and so on.
[0004]
Although the meandering varies depending on the roll shape, the meandering tends to occur or hardly occurs, but if the parallelism of the rolls 1m1 to 1m3 is shifted (inclined) with respect to the reference roll 1s, the meandering occurs. In addition, a difference in tension is generated in the width direction of the steel sheet, which may cause wrinkles and flaws, or may cause breakage.
[0005]
In order to prevent the belt from meandering, there are various countermeasures such as "rolling meandering control by roll steering" and "roller meandering control", but meandering caused by axial misalignment of the transport roll. With regard to (1), the parallelism between the rolls (whether the rolls are arranged in a “H” shape on a horizontal or vertical plane) is measured, and based on the measurement, the rolls are mutually moved. The adjustment is basically parallel to. As this method, first, the horizontality (inclination in the vertical direction) of the roll axis is measured, and the roll axis is aligned so that the roll axis becomes horizontal. That is, by adjusting the mounting positions of the bearings supporting both ends of the roll shaft, the shaft position is changed and the roll is made horizontal. Next, the roll axis is displaced (horizontal inclination) in the horizontal plane, and the roll axis is aligned so that the roll axis is oriented at right angles to the longitudinal direction of the strip. . That is, by adjusting the mounting positions of the bearings supporting both ends of the roll shaft, the shaft position is changed, and the parallelism of the plurality of rolls is adjusted.
[0006]
As a conventional technique relating to roll alignment measurement (parallelism measurement), for example, a method disclosed in Japanese Patent Application Laid-Open No. Hei 6-307845 discloses a method in which a laser or an ultrasonic detector is installed at an intermediate position in a row of rolls. The beam is transmitted (and received) to a plurality of rolls while rotating. Then, the distance to each roll surface is measured, and the shortest distance from the detector to each roll is calculated based on the rotation angle of the detector and the measured distance to obtain the roll position.
[0007]
Further, the method and apparatus disclosed in Japanese Patent Application Laid-Open No. H07-103705 disposes a slender strip-shaped contact portion having an L-shaped cross section and a rotatable top of the strip-shaped contact portion.RA goniometer consisting of an attached roll contact is used. That is, the band-shaped contact portion is in contact with the longitudinal edge of the band-shaped material, the roll contact portion is in contact with the roll longitudinal surface, and the angle difference between the two is read from the scale plate.
[0008]
As a method of determining the degree of parallelism between one set and two rolls, there is a method of looping a yarn between both rolls in a loop. First, in the vicinity of the center of the roll, the yarn is looped between both rolls in a loop, the yarn length is measured, and the distance between the rolls is determined. Next, the yarn is looped around both ends of the roll near the end of the roll, and the yarn length is measured. Further, the yarn length is measured at the other end of the roll in the same manner, and the roll parallelism is obtained from the difference in the yarn length to perform the roll alignment.
[0009]
[Problems to be solved by the invention]
However, the method disclosed in Japanese Patent Application Laid-Open No. Hei 6-307845 has a complicated structure of the apparatus, requires a long time to install the apparatus at the time of measurement, and may limit the field where it can be used due to the principle of measurement. When the method and apparatus disclosed in JP-A-7-103705 are used, it is expected that measurement satisfying the required accuracy will be difficult. For example, in a conveying device for a strip-shaped steel sheet using a roll having a width of 2 m, the allowable deviation amount at the end is about 0.5 mm, which is about (1.5 / 100) ° when converted into an angle. The measurement accuracy of the device is not sufficient. In addition, the method of performing roll alignment using a thread includes an error due to extension of the thread and the like, so that access for performing the roll alignment is not easy (a scaffold must be formed on the upper portion of the roll). .
[0010]
Thus, at present, it is practically difficult to measure the roll alignment. On the other hand, it has become an important issue to manufacture a strip-shaped steel sheet, particularly in a cold and thin line, in order to cope with thinning and widening, and to achieve stable threading (continuous conveyance).
[0011]
An object of the present invention is to measure the parallelism between rolls quickly and with high accuracy.
[0012]
[Means for Solving the Problems]
(1)BookInventionOf the first aspectRoll parallelism measuring device
Gyro (A, B);
Four contacts (4a-7a or 4b-7b) whose tips for contacting the curved surface of the roll (1s, 1m) are located on the same plane;
A member (3) for supporting the gyro (A, B) and the contacts (4a to 7a or 4b to 7b);
Generation to instruct generation of angle deviation informationInstruction input means (21); and
The gyro (A, B) andGenerateConnected to the instruction input means (21);GenerateAngle shift information generating means for generating angle shift information according to an angle change of the support member (3) based on a signal of the gyro (A, B) in response to an instruction (ON) of the instruction input means (21) (15);
Is provided.
[0013]
In addition, in order to facilitate understanding, reference numerals in parentheses are given to the corresponding elements or corresponding items of the embodiment shown in the drawings and described below for reference.
[0014]
According to this, the operator places the support member (3) on the first roll so that the tips of the four contacts (4a to 7a) simultaneously contact the peripheral surface of the first roll (1s). When mounted on the roll (1s), the plane on which the tips of the four contacts (4a to 7a) are located is parallel to the center axis of the first roll (1s). That is, the support member (3) automatically assumes a predetermined posture (parallel) with respect to the center axis of the first roll (1s).
[0015]
The operator contacts the support member (3) with the first roll (1s) in a predetermined posture, and then moves the contact (4a-7a or 4b-7b) of the support member (3) to the second roll. To easily and quickly measure the position deviation (θ, φ) of the second roll (1m) with respect to the posture of the first roll (1s) by abutting the roll (1m) in a predetermined posture. Can be. Since the accuracy of the angle measurement by the gyro (A, B) is high, it is possible to obtain a highly accurate parallelism measurement value (θ, φ). By the way, rolls having various surface shapes have been used for meandering control as rolls used in continuous transport equipment. As shown in FIG. 7B, the roll surface shape includes a straight crown roll, a sin crown roll, a taper crown roll, a narrow body roll, and the like. However, since any type of roll has a symmetrical shape with respect to the center line (middle point), when performing the above-described roll parallelism measurement, four contacts (4a to 7a or 4b) are required. 7b) can be measured without error if they (4 points) are brought into contact with each other so that their centers coincide with the center line (middle point) of the roll.
[0016]
(2)BookInventionOf the second aspectRoll parallelism measuring device
Warm up after the operating power is turned on, then the angle signal drifts linearly at the specified speedGyro (A, B);
Four contacts (4a-7a or 4b-7b) whose tips for contacting the curved surface of the roll (1s, 1m) are located on the same plane;
A member (3) for supporting the gyro and the contact;
Set instruction input means (12) ;
Generation to instruct generation of angle deviation informationInstruction input means (21);
Display means (13) ;and,
The set instruction input means (12) In response to the set instructionThe gyroTurn on the operating power and warm up time (3 Minute ) Drift speed measurement starts later and the holding instruction information (HOLD) The above Display means (13) Displayed for a predetermined time (Five Minute ) The measurement of the drift speed is terminated later and the display means (13) Moving instruction information (MOVE) Display and generateIn response to the instruction (ON) of the instruction input means (21)The angle signal of the gyro from the time when the measurement of the drift speed is completed to the time when the instruction is given, and the measured drift speedBased on theFrom when the drift speed measurement is completed to when the instruction is given.Angle shift information generating means (15) for generating angle shift information (θ, φ) according to an angle change of the support member (3);
A roll parallelism measuring device comprising:
[0017]
Even when the deviation angle of the roll parallelism is measured using an ideal gyro having a very small error, a gyro precession (α) due to the rotation of the earth is generated if the time elapses during the measurement. That is, since α = 360/24 × sinL [degrees / time] (where L is the latitude), at latitudes other than the equator, precession occurs with time. Also, the gyro itself has a temperature drift.
[0018]
But,The present inventionB of the second aspect of-Parallelism measurement devicesoMeans that the angle shift information generation means (15)angleThe drift velocity (RVθ, RVφ) of the signal is automatically measured, and the angle deviation information (θ, φ) is corrected according to the drift velocity (RVθ, RVφ). FIG. 3 shows an example of an angle signal drift generated by the fiber optic gyro when the support member (3) is stationary. In this example, the measurement signal (the angle signal in the illustrated example) generated by the gyro is unstable for three minutes after the power is turned on to the gyro. After 3 minutes, the angle signal level rises (substantially linearly) at a predetermined rising speed, and after 15 minutes, the angle signal level tends to be saturated and becomes non-linear. Therefore, the present inventionSee belowIn the embodiment, the drift speed (RVθ, RVφ) of the angle signal is calculated from the lapse of 3 minutes to the lapse of 8 minutes after turning on the power to the gyro (calibration period). Measurement of the roll parallelism (the deviation of the attitude of the second roll (1 m) with respect to the attitude of the first roll (1 s)) from the lapse of 8 minutes to 15 minutes when the drift speed is substantially constant. Calculation), and corrects the obtained attitude deviation amount (θ, φ) according to the drift speed (RVθ, RVφ) calculated during the calibration period, and measures the correction value (RMθ, RMφ) for roll parallelism. Value.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
(3) The gyro is two sets of gyros (A, B) One set detects angular velocity around the vertical axis and outputs angular signals around the vertical axis. ( θ ) And the other set detects angular velocity around the horizontal axis and outputs angular signals around the horizontal axis. ( φ ) Is generated; said angle shift information generating means (15) Is the support member (3) Angle deviation information about the vertical axis (RM θ ) And angle deviation information about the horizontal axis (RM φ ) Which is described in (1) or (2) above.Roll parallelism measuring device.
[0020]
Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.
[0021]
【Example】
FIG. 2A shows the appearance of an embodiment of the roll parallelism measuring apparatus according to the present invention. The gyro unit 8 is built in the housing 3 of the measuring device 2. The housing 3 has a rectangular shape, and contacts 4a to 7a or 4b to 7b are fixed to one wall surface (hereinafter, referred to as an object surface). The distance between the object plane and the tips of the legs 4a to 7a or 4b to 7b is the same, and the tips of the contacts 4a to 7a or 4b to 7b are on the same plane.
[0022]
FIG. 1A shows the roll 1s and the rear surface of the housing 3 in contact with the roll 1s as viewed from the rear surface (the surface facing the object surface) of the housing 3, and FIG. These aspects are shown.
[0023]
As shown in FIG. 2 (a) and FIG. 1 (a), when the tips of the contacts 4a to 7a are in contact with the peripheral surface (curved surface) of the roll 1s, respectively, The object plane is parallel to the center axis L1s of the roll 1s. Since the reference line L2 of the housing 3 is parallel to the object plane, the reference line L2 of the housing 3 is parallel to the center axis L1s of the roll 1s. As shown in (b) of FIG. 7 as (2) to (4), when there is a curve or a taper at the end of the roll, the contacts 4a to 7a or 4b to 4b. 7b, the center point of the housing 3 in the longitudinal direction (L2) is aligned with the middle line of the roll (a dashed line on FIG. 7B) so that none of the ends 7b is opposed to the end. By contacting each of the contacts 4a to 7a or 4b to 7b at the same time with the roll peripheral surface, the reference line L2 of the housing 3 is aligned with the center axis L1s of the roll 1s regardless of the roll shape. Be parallel. This state is expressed as the case 3 in a predetermined posture with respect to the roll 1s.
[0024]
In this embodiment, the parallelism between the rolls is measured for a roll row having a roll width of 2000 mm and a roll diameter of 200 mm, for example, a plurality of rolls arranged in parallel as shown in FIG. The size of the housing 3 of the measuring instrument 2 was 280 (height) × 280 (depth) × 1000 (width) mm so as to be suitable for As described above, the width of the housing 3 is set to be approximately half the roll width to be measured in order to make the interval between the contacts sufficiently wide.
[0025]
In this embodiment, the contacts 4a to 7a or 4b to 7b are compared with the comparison rolls 1m1 to 1m3 with respect to the posture of the housing 3 when the contacts 4a to 7a are in contact with the peripheral surface of the reference roll 1s. The deviation of the attitude of the housing 3 when it comes into contact with the peripheral surface (hereinafter, each is simply referred to as 1 m) (the deviation of the parallelism: the center of the comparison roll 1 m with respect to the center axis of the reference roll 1 s). The angle formed by the axes is defined as the relative difference between the angle of the reference line L2 with respect to the x, z vertical plane (hereinafter referred to as the horizontal deviation angle θ) and the relative difference between the angle of the reference line L2 with respect to the x, y horizontal plane (hereinafter referred to as the vertical deviation angle). (referred to as φ). As shown in FIGS. 1 (c) and 1 (d), assuming that the comparison roll 1m is moved in parallel and moved to the position of the reference roll 1s, the horizontal deflection angle θ is as shown in FIG. 1 (d). Is the angle θ formed by the projection lines when the central axes of the reference and comparison rolls 1s, 1m are projected on the x, y horizontal plane. As shown in FIG. 1 (c), the vertical deflection angle φ is the angle φ formed by the projection lines when the central axes of the reference and comparison rolls 1s, 1m are projected onto the x, z vertical plane. Since the horizontal declination θ and the vertical declination φ have different directions (orthogonal directions), two gyros A and B are provided in the gyro unit 8, and the gyro A is used to set the horizontal declination θ and the gyro B is used for vertical. The declination φ was measured.
[0026]
FIG. 4 shows an arrangement of the gyros A and B in the gyro unit 8. The gyros A and B are fiber optic gyros JG-35FD manufactured by Japan Aviation Electronics Industry, Ltd., respectively. Each gyro is supported by the housing 3 via a gimbal having rotational degrees of freedom with respect to the vertical and horizontal axes, and the reference line L2 of the measuring instrument 2 (housing 3) is parallel to the horizontal axis xx. When the posture of the housing 3 is determined so as to be as follows, the gyro itself is vertically suspended by its own weight by the gimbal. At this time, the posture of the housing 3 is substantially the posture shown in FIGS. 2A, 1A and 1B. The gyro A detects the angular velocity ωθ about the vertical axis z, and The gyro B detects the angular velocity ωφ around the horizontal axis y, and calculates the angle φ from the angular velocity ωφ (integral).
[0027]
In the fiber optic gyro JG-35FD type, laser light is guided into one end of an optical fiber (fiber coil) wound on a cylinder to form clockwise light, and the laser is similarly applied to the other end. In the case where the light is introduced and turned into the counterclockwise light, the "Sagnac effect" is utilized, in which, when the entire optical system is rotated, a phase difference is generated between the two right and left light waves propagating through the optical loop. Since this phase difference is proportional to the angular velocity, this gyro converts this phase difference into an angular velocity, and integrates the angular velocity to obtain an angle (an angular velocity integrated value from the time of reset input). Output.
[0028]
Referring to FIG. 2A again, the processor 10 is connected to the gyro unit 8 via a wire harness 20. In this embodiment, the roll parallelism measuring device is separated into a measuring device 2 and a processor 10 in consideration of the convenience at the time of use, and both are connected by a wire harness 20. The operation panel of the processor 10 includes a digital display 13, a power switch 11,The processor 10 is provided with a fiber optic gyro and a battery 14 (device power supply) for use in the processor 10. In addition, a control circuit including a ROM 17, a CPU 15, a RAM 16 and the like storing a program, a calculation formula, and character data is provided for automatic measurement of gyro precession by earth rotation, roll measurement, and display control. . Since only the fiber optic gyros A and B and the gimbal are contained in the housing 3 of the measuring instrument 2, it is lightweight, and can easily contact or hold the roll. Due to the characteristics of the fiber optic gyro, there is a time constraint from when the gyros A and B are turned on to when the measurement is completed.
[0029]
FIG. 3 shows the drift characteristics of the gyros A and B. In FIG. 3, the warm-up time until the gyro stabilizes until three minutes elapse after the power supply of the gyros A and B is turned on. Five minutes from the lapse of three minutes to the lapse of eight minutes is a period (calibration time) for automatically measuring the earth automatic rate (Earth Rate) at the position (latitude) where the gyro is used. During this period, the drift speed (° / sec) of the angle measurement value is calculated. For 7 minutes from the lapse of 8 minutes to the lapse of 15 minutes, the horizontal deflection angle θ and vertical deflection angle φ of the comparison roll 1m (1m1 to 1m3) with respect to the reference roll 1s are measured using the gyros A and B. It is a period that can be done. If the time is longer than this, the fiber optic portions of the gyros A and B generate heat due to the laser light, and the measurement accuracy of the gyro decreases. That is, the linear drift region of the gyro is from 3 minutes to 15 minutes after the power is turned on. If the number of comparison rolls is large and it takes more than 7 minutes to measure the horizontal deviation θ and vertical deviation φ of all the comparison rolls, turn off the gyro power supply once, cool the fiber, and A method is taken to restart the measurement for the comparison roll of the above.
[0030]
5 and 6 show an outline of the control and calculation processing of the CPU 15 shown in FIG. First, the measurer attaches the measuring device 2 of the roll parallelism measuring device to the central peripheral surface of the reference roll 1s, and turns on the power switch 11 on the operation panel of the processor 10. When the power switch 11 is turned on, a required voltage is applied to the electric elements in the processor 10, and the CPU 15 executes initialization when the operating voltage is applied. That is, the data of the register and the table (memory area: allocated to the internal RAM of the CPU 15 and the RAM 16) are set to the initial values, and the output port is set to the signal level during standby (step 1). Hereinafter, only the step number is described in parentheses, abbreviating the word “step”. Next, the CPU 15 waits for the set switch 12 to be switched from off to on (2). When the set switch 12 is turned on, an operating voltage is applied to the gyros A and B (3). That is, the power of the gyros A and B is turned on (3). As a result, the controllers inside the gyros A and B start calculating the angular velocity and integrating the angular velocity (point 0 on the horizontal axis in FIG. 3). The CPU 15 turns on the power supplies of the gyros A and B and starts timekeeping A (measurement of elapsed time; timekeeping value is A) at the same time (4). Then, it waits until the counted value A becomes 180 seconds (3 minutes) (5). In order to perform highly accurate declination measurement, it is necessary to warm up until the fiber optic gyros A and B are stabilized. During this 180 seconds, the CPU 15 displays "WAIT" on the display 13. (4). The display data is read by the CPU 15 from the ROM 17 and is given to the display 13 via the I / O & buffer.
[0031]
The measurer utilizes the period of "WAIT" to ensure that the tips of a set of four contacts 4a to 7a protruding from the object plane of the housing 3 of the measuring instrument 2 are all rolls of the reference roll 1s. The posture of the housing 3 is adjusted so as to be in contact with the peripheral surface (searching for a position where all of the contacts 4a to 7a do not rattle), and the measuring instrument 2 is held in that posture. This needs to be completed during the "WAIT" period.
[0032]
When the counted value A reaches 180 seconds, the CPU 15 instructs the gyros A and B to transfer the angle data θ and φ, and the gyros A and B respond to this in response to the angle data θ and φ. (The integral values of the angular velocities ωθ and ωφ) are transferred to the CPU 15, and the CPU 15 writes the obtained angle data θ and φ in the registers RIθ and RIφ, respectively, and displays “HOLD” and the angle data θ and φ on the display. 13 is displayed (6). These angle data are angle values at the position of 3 minutes on the horizontal axis in FIG.
[0033]
The CPU 15 waits until the time count reaches 480 seconds (8 minutes) (7). When the counted value A reaches 480 seconds, the CPU 15 instructs the gyros A and B to transfer the angle data θ and φ, and the gyros A and B respond to this in response to the angle data θ and φ at that time. (The integral values of the angular velocities ωθ and ωφ) are transferred to the CPU 15, and the CPU 15 writes the obtained angle data θ and φ into the registers REθ and REφ, respectively (8). These angle data are angle values at the position of eight minutes on the horizontal axis in FIG.
[0034]
The CPU 15 then calculates the drift speed
(REθ-RIθ) / (480-180),
(REφ-RIφ) / (480-180)
Is calculated and written into the registers RVθ and RVφ, respectively (9). These drift velocities are values obtained by dividing the difference between the angle values at the 3-minute position and the 8-minute position on the horizontal axis in FIG. 3 by the time difference between the two positions, and are obtained during the calibration period (3 minute position to 8 minute position). Represents the drift speed between the two.
[0035]
Next, the CPU 15 instructs the gyros A and B to reset (10). In response, the gyros A and B initialize the angular velocity integral value to zero and restart the integral from zero. As a result, the state in which the housing 3 is in a posture in which the four contacts 4a to 7a are in contact with the reference roll 1s is determined as the angle reference value (0).
[0036]
The CPU 15 saves the clock value A in the register RTS (11), updates the displayed angle values (θ and φ) to 0, and updates the displayed “HOLD” to “MOVE” (12). ). Then, the CPU 15 waits until the memory switch 21 is turned on (13). The measurer moves the housing 3 away from the reference roll 1s, and, for example, all four contacts 4 to 7 abut the peripheral surface of the roll 1m1 with respect to the first comparison roll 1m1. The posture is set, and in that state, the memory switch 21 is turned on once.
[0037]
The gyros A and B continuously integrate the angular velocities ωθ and ωφ generated in the housing 3 until the measurer separates the housing 3 from the reference roll 1s and touches the first comparison roll 1m1. Therefore, when the measurer turns on the memory switch 21 as described above, the angular data (integral values) of the gyros A and B are compared with the first comparison roll with respect to the center axis L1s of the reference roll 1s. The horizontal deviation θ and the vertical deviation φ of the central axis L1m of 1 m1 are shown. However, the drift amount from the time (time value A) written to the register RTS in step 11 to the lapse of time up to this point
RVθ × (current time value A-RTS),
RVφ × (Current time value A-RTS)
Is included. RTS is a time value represented by the data of the register RTS.
[0038]
Please refer to FIG. When the memory switch 21 is turned on, the CPU 15 instructs the gyros A and B to transfer the angular data .theta. And .phi., And the gyros A and B respond to the instructions to transfer the angular data .theta. And .phi. ωθ and ωφ) to the CPU 15, and the CPU 15 subtracts the drift amount from the obtained angle data θ and φ to obtain a corrected value.
θ−RVθ · (current measured value A-RTS),
φ-RVφ · (Current time value A-RTS)
Is written into the registers RMθ and RMφ, and the angle display value is updated to the values RMθ and RMφ represented by the data of the registers RMθ and RMφ (14). These values are the horizontal deflection angle θ and the vertical deflection angle φ of the first comparison roll 1m1 with respect to the reference roll 1s, in which the gyro drift is automatically corrected.
[0039]
Next, the CPU 15 increments the read / write address of the table allocated to one memory area of the RAM 16 by one (15), and writes the data of the registers RMθ and RMφ there (17).
[0040]
However, before that, it is checked whether the time value A is less than 900 seconds (16), and when the time value A is less than 900 seconds, the above-described data writing is performed, and the time value A is 900 seconds or more (FIG. 3). (Outside of the linear drift range), the measurement error increases, so "ERROR" is written (21), and the displayed "MOVE" and the angle display are changed to "ERROR" (22). In this case, the measurer turns off the set switch 12, waits for the gyros A and B to cool down, cools the gyros A and B sufficiently, and then reattaches the housing 3 to the reference roll 1s. The set switch 12 may be turned on again. As a result, the above-mentioned step 3 and subsequent steps are executed as described above, so that when the display changes from "HOLD" to "MOVE", the housing 3 is moved to the comparison roll 1mi with the "ERROR" display. , And the memory switch 21 may be turned on once.
[0041]
Now, a description will be given of the processing following step 17 assuming that the clock value A is still less than 900 seconds. The measurer then moves the housing 3 away from the first comparison roll 1m1 and, for example, for the second comparison roll 1m2, all four contacts 4 to 7 are on the circumference of the roll 1m2. , And the memory switch 21 is turned on (second ON) in that state. After the process of step 17 (described above), the CPU 15 waits for the switch 21 to be turned on (18 to 20). In response to the second on of the switch 21, the CPU 15 executes the above steps 14 to 17 Then, the horizontal declination θ and the vertical declination φ of the gyro drift of the second comparison roll 1m2 with respect to the reference roll 1s are automatically corrected, the display is updated (14), and the text is updated. -Additional writing to the cable (15-17). In this manner, until the display becomes "ERROR", the measurer sequentially moves the casing 3 to the third comparison roll 1m3, the fourth comparison roll 1m4,. By repeating the operation of setting the memory switch 21 to the above-mentioned predetermined posture and turning on the memory switch 21, the horizontal deviation θ and the vertical deviation φ (drift corrected) of each comparison roll with respect to the reference roll 1 s are obtained. Is displayed on the display 13 and written in a memory table on the RAM 16.
[0042]
When "ERROR" is displayed on the display 13, the measurer turns off the set switch 12 there, and after a predetermined cooling time, re-attaches the housing 3 to the reference roll 1s and re-sets the set switch 12. Then, when the display is changed from "HOLD" to "MOVE", the measurement of the housing 3 may be resumed from the comparison roll 1mi displayed as "ERROR".
[0043]
While the power switch 11 is on, the measurement data is held in the memory table (RAM 16). After all the required rolls have been measured or when "ERROR" is displayed (during measurement), the set switch 12 is turned off (although it is not always necessary to turn off the set switch 12, the gyro A and B It is preferable to turn it off for cooling), and to use the recall switch 22 and the up / down switches 23 and 24 to sequentially display all measured data of the memory table on the display 13. Can be read.
[0044]
When the recall switch 22 is switched from off to on, the CPU 15 sets the read / write address RMA of the memory table to 1 (first comparison roll: comparison roll 1m1 according to the above description). (19, 23 to 25), the data of the address (drift-corrected horizontal deflection angle θ and vertical deflection angle φ: data written in step 17) are read out and displayed on the display 13 (26). .
[0045]
When the up switch 23 is turned on once while the recall switch 22 is on, the CPU 15 increments the read / write address RMA of the memory table by 1 (23, 27, 28) and reads the data of the address. Is displayed on the display 13 (29). Therefore, by repeatedly turning on the up switch 23 once, the measurement data of the memory table is sequentially displayed in the measurement order. If the down switch 24 is turned on once while the recall switch 22 is on, the CPU 15 decrements the read / write address RMA of the memory table by 1 (23, 27, 31, 32) and reads the data of the address. Is read out and displayed on the display 13 (33). Therefore, by repeatedly turning on the down switch 23 once, the measured data of the memory table is sequentially displayed in the reverse order of the measurement order.
[Brief description of the drawings]
1 (a) is a rear view showing a state where the measuring device 2 shown in FIG. 2 is mounted on a reference roll 1s in a predetermined posture, and FIG. 1 (b) is a side view. (C) is a front view showing the vertical deflection angle φ of the comparison roll 1m with respect to the reference roll 1s when the comparison roll 1m is translated to the position of the reference roll 1s, and (d). Is a plan view showing the horizontal deflection angle θ of the comparison roll 1m with respect to the reference roll 1s.
FIG. 2A is a perspective view showing an appearance of an embodiment of the present invention, and FIG. 2B is a block diagram showing a configuration of an electric system of the embodiment.
FIG. 3 is a graph showing a drift amount with respect to time of the fiber optic gyros A and B shown in FIG. 2 (b).
FIG. 4 is a perspective view showing a gimbal that vertically supports the fiber optic gyros A and B shown in FIG. 2 (b).
FIG. 5 is a flowchart showing a part of measurement control and calculation processing of a CPU 15 shown in FIG. 2 (b).
FIG. 6 is a flowchart showing the rest of the measurement control and calculation processing of the CPU 15 shown in FIG. 2 (b).
FIG. 7 (a) is a perspective view showing the arrangement of steel sheets and rolls in the strip-shaped steel sheet transport equipment, and FIG. 7 (b) is a plan view showing an example of the shape of the roll used.
[Explanation of symbols]
1s: Reference roll 1m, 1m1 to 1m3: Comparison roll
2: Measuring instrument 3: Housing (gyro support member)
4a-7a, 4b-7b: Contact 8: Gyro unit
10: Processor 11: Power switch
12: Set switch 13: Display
14: Battery 15: CPU
16: RAM 17: ROM
20: Wire harness 21: Memory switch
22: Recall switch 23: Up switch
24: Down switch

Claims (3)

gyro;
Four contacts whose tips for contacting the curved surface of the roll are coplanar;
A member for supporting the gyro and the contact;
Generation instruction input means for instructing generation of angle shift information ; and
Angle shift information generating means connected to the gyro and the generation instruction input means, for generating angle shift information according to an angle change of the pointing member based on a signal of the gyro in response to an instruction of the generation instruction input means;
A roll parallelism measuring device comprising: A gyro that warms up after the operating power is turned on and then the angle signal drifts linearly at a predetermined speed ;
Four contacts whose tips for contacting the curved surface of the roll are coplanar;
A member for supporting the gyro and the contact;
Set instruction input means;
Generation instruction input means for instructing generation of angle shift information ;
Display means; and
In response to the set instruction of the set instruction input means , the operation power is turned on to the gyro , the measurement of the drift speed is started after the warm-up time, the holding instruction information is displayed on the display means, and the measurement of the drift speed is performed after a predetermined time. End and display the movement instruction information on the display means, in response to the instruction of the generation instruction input means, the angle signal of the gyro from when the measurement of the drift speed is completed to when there is the instruction, based on the drift velocity measured, it generates an angular displacement information corresponding to the angular change of the support member from the time of completion of the measurement of the drift velocity until there is the instruction angle shift information generating means;
A roll parallelism measuring device comprising: The gyro is composed of two sets of gyros, one set detects an angular velocity about a vertical axis and generates an angle signal about a vertical axis, and the other set detects an angular velocity about a horizontal axis and detects an angle about a horizontal axis. 3. The roll parallelism measurement according to claim 1, wherein the angle shift information generating means generates angle shift information about the vertical axis and angle shift information about the horizontal axis of the support member. apparatus.

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