KR100919013B1 - Device for measuring right-angled degree of assembling type roll - Google Patents

Abstract

The present invention relates to an apparatus for measuring the squareness of assembled rolls used for installation and alignment of various rolls, which are components of a steel mill cold rolling mill production line, and various assemblies that are members of a steel mill cold rolling mill production line having the characteristics of a continuous line. In the installation and alignment perpendicularity measuring device of the die roll, a magnetic part is built in a round cylindrical body for easy removal and attachment to the end portion of the roll, and a base part having a variable means of rotation and axial length coupled to the upper part thereof. Wow; A measuring device unit coupled to the base part by a coupling bar and a clamp, and having a sidci laser micrometer combining the transmitter and the receiver facing each other to enable contact measurement with the piano wire as a measurement reference point; The measurement signal of the digital dial gauge connected to the measuring device unit and a plurality of cables and contacted on the bearing block supporting the roll shaft enables the analysis, determination, and history management of the data when measuring and modifying the squareness of the roll. It is configured to include a calculation unit having a portable type calculator provided.

In each production line, whether the center pass line, which is the standard of the strip direction, and the axial center line of each roll are installed at right angles, or how the center line of each roll is twisted due to the stress on the roll, deformation of the base, roll change, etc. You can measure the presence and correct the amount by the wrong amount.

Description

DEVICE FOR MEASURING RIGHT-ANGLED DEGREE OF ASSEMBLING TYPE ROLL}

1 is an exemplary view showing a roll perpendicularity measurement process according to the prior art,

Figure 2 is a schematic diagram illustrating the principle for conventional roll squareness measurement,

3 is a state diagram of the conventional roll squareness measuring device,

4 is a sectional view of an essential part of an installation of the present invention;

5 is a perspective view of an installation state of the device of the present invention;

6 is a cross-sectional view of FIG.

Explanation of symbols on the main parts of the drawings

1 .... strip 2 .... Santa Pass Line

10 .... Roll 40 .... Piano

100 ... lower base 110a, b ... upper base

121 ... motor 122 ... encoder

123 .... Ballscrew 140 .... Sided laser micrometer

140a .... Emitter 140b .... Receiver

200 ... operator 202a, b ... digital dial gauge

B .... Base M .... Measuring Unit

The present invention relates to a device for measuring the squareness of the assembled rolls used in the installation and alignment of various rolls, which are components of a cold rolling mill production line, and more specifically, a center pass that is a reference of a traveling direction of a strip in each production line. Ability to measure how much the center line of each roll is distorted due to the stress of the roll, deformation of the base, roll change, etc. It relates to a squareness measuring device of the assembled roll having a.

In general, as shown in Figure 1, the various rolls (6, 7, 8, 9, 10) in the cold rolling mill production line having the characteristics of the continuous process while the strip or the direction of the strip (1) while the strip As a very important construction that also tensions (1), the rolls (6,7,8,9,10) are precisely at right angles to the center pass line (2), which is the centerline of the strip (1) direction of travel. Are arranged.

That is, the center pass line 2 which is the center of the width direction and the axial center line 6 ', 10' of each of the rolls 6, 7, 8, 9, 10 are formed in the production line having the characteristic of continuous process. The angle is referred to as the "orthogonality of the rolls". Since the orthogonality of each of the rolls 6, 7, 8, 9, and 10 is an essential element in maintaining the optimum state of the strip-shaped strip 1 due to the continuous line characteristics, each roll ( 6,7,8,9,10) are installed and maintained in strict squareness criteria.

Here, the squareness reference value refers to the allowable limit value of the inclination amount α of the roll 10, as shown in FIG. 2, and the piano wire 40 and the crank-type device, which are usually installed in parallel with the center pass line 2, are installed. Measure the absolute distance from the rod-type micrometer attached to (20) and call it X1 and X2, and the difference value is F (orthogonality value of the roll). The difference is controlled within 0.05 to 0.1 mm / m.

For example, if a change in the squareness or horizontality of the roll occurs due to stress applied to the roll, deformation of the base, roll replacement, or the like, the strip 1 which is processed (transferred) in a continuous process is referred to the center pass line 2. As a result, the strip (1) of the strip (meandering phenomenon) that proceeds to one side is extremely left or right off the center pass line (2), which causes waves, edge defects, and dents. Not only will it cause various product defects, but it will also cause breakage during operation, which will have a huge impact on production.

Therefore, the squareness measurement operation to check whether the roll angle and horizontality are within or below the standard value (0.05 to 0.1 mm / m) is performed for various rolls in the cold rolling mill production line which has the characteristics of continuous process. Although it is one of the essential tasks that must be performed at the time of installation and maintenance, in the past, simply install the piano wire 40 to the center height of the roll using the piano wire 40 and the jig 42 of FIG. Fix by giving the appropriate tension through the jig (42), and then adjust the weight (50) and the adjusting nut (44) to maintain the parallel to the center pass line (2) to form a reference line of the perpendicularity measurement, roll The crank-type device 20 was attached to the end portion of (10) to measure the squareness as described above.

All of these tasks were processed manually, which led to the following problems.

First, in order for the operator to rotate the roll up, down, left and right by hand, the coupling of the deceleration period driving the roll and the roll must be disassembled and strips hanging on the roll must be removed. Due to the nature of the cold rolling mill, strip removal and re-striping of the rolls are a waste of time and time.

Secondly, the crank type device is a bolted fastening type device, which is usually manufactured by welding steel plates (steel plates) and steel pipes (pipes), so that the size of various rolls varies and becomes a reference point for measurement according to the installation location of the rolls. Since the benchmark position is different, the work is extremely incompatible, and each time the roll perpendicularity measurement occurs, it must be newly manufactured and used, resulting in excessive work time and reduced work efficiency.

Third, measurement standards are different for each worker, so measurement errors are large and the measurement process is very difficult and complicated.

Fourth, if the measurement of the squareness of the roll is out of the standard value (0.05 to 0.1 mm / m), the above-mentioned measurement and correction work must be repeatedly performed. Therefore, it is difficult for the unskilled person to perform the work due to the high level of skill and experience. Do.

 The present invention has been made in view of the above-described problems of the prior art, and solved this problem, and can be measured even when the roll is stopped without rotating the roll or disassembling the coupling. It is possible to change the axial length and rotate 360˚ so as not to be limited by the variety of size and size.It is easy and free to attach and detach, and displays the squareness correction value of the roll in real time. It is an object of the present invention to provide a device for measuring the squareness of the assembled roll which can be made at the same time to improve the reliability of the measurement and maximize the work efficiency.

In the above object of the present invention, in the installation and alignment perpendicularity measuring device of various assembled rolls, which are components of a steel mill cold rolling mill production line having the characteristics of a continuous line, the end portion of the roll is easily rounded and attached. Magnetic base is built in the cylindrical body, the upper portion and the base portion is coupled to the variable means of rotation and axial length; A measuring device unit coupled to the base part by a coupling bar and a clamp, and having a sidci laser micrometer combining the transmitter and the receiver facing each other to enable contact measurement with the piano wire as a measurement reference point; The measurement signal of the digital dial gauge connected to the measuring device unit and a plurality of cables and contacted on the bearing block supporting the roll shaft enables the analysis, determination, and history management of the data when measuring and modifying the squareness of the roll. It is achieved by providing an apparatus for measuring the squareness of the assembled roll, characterized in that it comprises a calculation unit having a portable type calculator provided.

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

4 to 5, the base part B, a measuring device part M rotatably coupled to the base part B, and an electrical signal of the measuring device part M as shown in FIGS. 4 to 5. It is composed of an operation unit (O) having a data processing, storage, and display function.

Base portion (B), as shown in Figure 4, the lower base 100 of the round cylindrical body, there is a magnetic 102 and the handle switch 101 is embedded therein, the hollow hollow inside formed on the upper surface of the body At the tip end, there are upper bases 110a and 110b fixed by bolts 111, and there is a ball bearing 112 for assisting the measuring device M to rotate 360 ° and a side cover for fixing the ball bearing 112. 113 and a rotating plate 150 for manually controlling the rotation of the measuring device unit (M), the stop pin 151 including a spring (not shown) is inserted into the top of the rotating plate 150 Four stop holes 151a can be precisely machined.

In addition, four stop holes 151b are precisely processed so that the stop pins 151 may be inserted into one side of the upper bases 110a and 110b, respectively, having different depths along the four stop holes 151b. The stopway 151c is formed with a circular curve.

In addition, a motor 121 and an encoder 122 which provide a variable value of the axial length of the measuring device unit M to the calculation unit O are bolted to the upper base 110b. The and encoder 122 is assembled in the form of a key in a line with the ball screw 123.

The ball screw nut 124 of the rounded rectangular shape is coupled to the ball screw 123 to perform a linear movement. The connection bar 131a of various sizes is orthogonal to the other connection bar 131 b on the upper surface of the ball screw nut 124. It is assembled.

The measuring device unit (M) is composed of a clamped laser micrometer (CCD LASER MICROMETER) 140 is clamped at the end of the connection bar 131b assembled on the upper surface of the ball screw nut 124. 140 is a 'c' shaped supporter 140a fixed to the connecting bar 131b, and a rectangular light emitter 140b and a light receiver 140c fixed to each end of the supporter 140a so as to face each other. Is made of.

The calculation unit O is installed in the bearing blocks 12a and b for rotatably supporting the axis of the roll 10 around the portable type calculator 200 having the display 204 and the keyboard 206 on the LCD screen. It consists of a pair of digital dial gauges 202a and 202b and respective cables 210a, 210b, 212a, 212b, 214a and 214b capable of transmitting power and data.

The operating relationship of the present invention made of such a configuration is as follows.

First, after connecting the power cable (not shown) to a suitable place around the roll 10 to measure the squareness, the operator 200 is disposed, the upper and lower bases (100, 110a) at the end of the roll 10 b) is installed.

At this time, the upper and lower bases (100, 110a, b) can be easily fixed using the handle switch 101 as a magnetic type that is easy to remove, attach.

Subsequently, the measuring device unit M is assembled to the upper surface of the ball screw nut 124 of the upper bases 110a and 110b using the connection bars 131a and b, and at the end of the connection bar 131b, the light emitter 140b is disposed. And a laser beam micrometer 140 having a light receiver 140c.

In addition, the digital devices installed in the calculator 200, the motor 121, the encoder 122, the light emitter 140b, the light receiver 140c, and the bearing blocks 12a and b of the CD laser micrometer 140. Cables 210a, 210b, 212a, 212b, 214a, and 214b connected to the dial gauges 202a and 202b are installed to maintain the squareness.

The measurement of squareness is performed in the following order.

In the measurement, the process of installing the piano wire 40 serving as a reference line for the perpendicular measurement of the roll 10 on the benchmark 60 formed in parallel with the center pass line ('2' in FIG. 1). And, the process of zeroing this is the same as in the prior art, but the conventional preliminary work such as dismantling the driving unit coupling that was performed in advance in the roll 10 measurement of the squareness or removing the strip 1 over each roll is omitted.

First, after the power is supplied to the calculator 200, a program configured to be suitable for the measurement of the squareness of the roll 10 is booted.

Next, by rotating the rotating plate 150 manually 360 ° naturally to check whether the measuring unit (M) is smoothly rotated without interfering with the surrounding equipment, then the position of the point where the CD laser micrometer 140 is to measure And stop it.

Here, the rotation plate 150 is stopped while the stop pin 151 on the line of the stopway 151c is inserted into the stop hole 151b by a spring (not shown).

Subsequently, the digital dial gauges 202a and 202b and the seed laser micrometer 140 installed in the bearing blocks 12a and b should be zero set, which is part of the upper surface of the digital dial gauges 202a and 202b. By pressing a reset button (not shown) provided in the display, the displayed value may be reset to 0.000 mm.

Thereafter, the operator 200 commands the displacement value of the axial length by an arbitrary number about two to three times to linearly reciprocate the ball screw 123 and the ball screw nut 130 of the upper bases 110a and 110b. Check whether this is normally done, and then obtain a highly reliable measurement data, and then zero-set the current position of the CD laser micrometer (140).

That is, the axial linear movement of the measuring device M is possible by the motor 121, the encoder 122, the ball screw 123, and the ball screw nut 124, for example, the calculator 200 of the present invention. Command at "FORWORD 100", the ball screw nut 124 combined with the measuring device (M) stops at the zero point in the "BACKWORD" direction, and moves 100 mm in the "FORWORD" direction, and the "BACKWORD 100" Command will move 100mm in the direction of "BACKWORD" and stop again at the zero point in the direction of "BACKWORD".

In addition, there is a means that can be moved without entering the distance to move as described above, by entering "FORWORD FULL" or "BACKWORD FULL" can move to the zero point in each direction, the keyboard 206 of the calculator 200 It can be configured to enable fine movement by operating the direction keys (not shown).

In addition, the total distance value that can be linearly moved from the zero point in the "FORWORD" direction to the zero point in the "BACKWORD" direction is limited to 250 mm. In this way, it is necessary to check whether the linear reciprocating motion of the measuring device is desired. will be.

Therefore, in the above, "zero-set the position of the CD laser micrometer 140", for example, the command "FORWORD 100" in the operator 200 or by using the direction keys of the keyboard 206 of the operator 200. After selecting the fine moving means such that the piano wire 40 is positioned within the measurement ranges of the light emitter 140a and the light receiver 140b of the sisci laser micrometer 140, the sisci laser micrometer 140 at that time. Means that the position (change value of the axial length) is input to the calculator 200.

In this state, when the measurement start command is executed, the laser light is emitted from the light emitter 140b of the CD laser micrometer 140, and the light receiver 140c constituted of a set of cells (not shown) capable of reading a distance value. In the Piano wire 40, the portion of the laser light does not pass through is read accurately and the data is transmitted to the calculator 200, and the data of the calculator 200 is displayed in real time.

Through this process, the measurement work of one point (left measuring point: L / S) must be finished, and the other work (right measuring point: R / S) should be measured. To the position of "BACK WORD FULL" to the "BACK WORD" zero point, and then slightly lift the stop pin 151 of the upper base (110a, 110b) rotating plate 150, the position of the CD laser micrometer 140 The rotating plate 150 is slowly rotated 180 ° so as to come to the right measuring point, and then fixed again with the stop pin 151.

Then, the position of the CD laser micrometer 140 should be sent from the "BACK WORD" zero point to the point set zero in the measurement operation of the left measuring point, and the measuring position return may be executed in the calculator 200.

For example, if the position of the CD laser micrometer 140 is zero-set at the point of “FORWORD 125.055” and the measurement operation is performed, the CD laser micrometer 140 performs the “BACKWORD” zero point when executing the measurement position return in the calculator. It will be moved to the "FOWDWORD 125.055" point at which it will be automatically set to zero.

Subsequently, when the 'right measurement point' is input on the screen of the calculator and the measurement start command is executed, the measurement data can be obtained by the CD laser micrometer 140, and the data is calculated by the operator 200. Is sent to.

When the data of the left measurement point and the data of the right measurement point are obtained by the same measurement method as described above, based on the data, the 'orthogonality of the roll' value in the present invention in the calculator 200 is a reference value (0.05 to 0.1 mm / m) It automatically reads whether it is coming in or out of it, and the measurement data transmitted to the calculator 200 is automatically calculated and displayed in real time on the display 204 of the calculator 200 so that the user can quickly check the information. .

In addition, the "roll perpendicularity" reference value is set as an alarm in the calculator 200, and the squareness value of the roll 10 is calculated in real time at the time when the measurement data of the last right measurement point is transmitted. Orthogonality values are within the baseline ", or the voicement may be provided to the measurer such as" Rightness of the roll needs correction ".

If the squareness correction is necessary, the real-time measurement data provided on the screen of the calculator 200 is once again checked and the squareness correction operation is performed while the position of the CD laser micrometer 140 is at the right measurement point. Will be performed.                     

The correction operation is to first check the zero setting state of the digital dial gauges 202a and 202b described above for the squareness correction operation of the roll 10, and then disassemble the fixing bolts of the bearing blocks 12a and b of the roll 10. Then, the screen of the calculator 200 is switched to a mode such as "roll squareness correction operation", and after inputting L1, L2, and Y values shown in FIG. The measurer displays the correction value (the amount of movement of the bearing block) of each of the digital dial gauges 202a and 202b.

Next, using the jack bolts on the side of the bearing blocks 12a and b of the roll 10, the bearing blocks 12a and b as much as the correction values of the digital dial gauges 202a and 202b provided by the calculator 200, respectively. The squareness value of the roll 10 may be brought into the reference value (0.05 to 0.1 mm / m) while moving the position of the roller 10. The position of the bearing blocks 12a and b of the roll 10 is moved by using a jack bolt. In the meantime, the measurer may check the change in the squareness value of the roll 10 provided by the calculator 200 at any time.

In addition, when the roll 10 perpendicularity value enters into the reference value (0.05 to 0.1 mm / m) by the above correction operation, the measurement operation and the correction operation using the roll squareness measurement apparatus of the present invention are completed.

As described in detail above, the present invention is a problem of excessive demand of a large number of people and working hours that occurred during the preliminary work, such as removing the strips stuck on the roll or dismantling the coupling when measuring the squareness of the roll, when measuring Inefficiency of rotating the roll with human hands, different location of the roll, limited by the variety of sizes, incompatibility of work, and inaccuracy of the measured value by hand. .

In addition, it provides an effect of preventing the cold rolled product defects such as waves, edge defects, dents, etc. during the production of cold-rolled steel mills, and meandering of the strip, which causes the breakage of the plate, which is the main cause of the productivity decrease.

Claims (1)

In the installation and alignment squareness measuring device of various assembled rolls, which are components of a steel mill cold rolling mill production line having the characteristics of a continuous line, A lower base of the cylindrical body installed at the end of the roll, an upper base fixed with a bolt at the front end of the lower base and formed with a stop hole into which one stop pin can be inserted, and a rotatable upper part; A base portion formed of a rotating plate having a stop hole into which the stop pin is inserted; A measuring device unit coupled to the base unit and rotating according to the rotation of the rotating plate, and having a CD laser micrometer combining the light emitter and the light receiver facing each other so as to make contact measurement with the piano wire as a measurement reference point; The measurement signal of the digital dial gauge connected to the measuring device and connected to a plurality of cables and rotatably supporting the roll shaft enables the analysis, determination, and history management of the data when measuring and modifying the squareness of the roll. It is configured to include; a calculation unit having a portable type calculator provided A motor connected to a ball screw is installed in the upper base, and an encoder is installed in the motor to provide a variable value of an axial length of the measuring device to the calculation unit, and the CD laser micrometer is coupled to the ball screw. And a rectangular roll measuring device installed at an end of a connecting bar assembled on an upper surface of a screw nut and configured to be axially moved by the motor.

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