KR20030095073A - Apparatus for measuring profile and true circle degree of rolling roll - Google Patents

Abstract

PURPOSE: An apparatus for measuring profile and roundness of rolling roll is provided to improve working efficiency and product quality by measuring profile and roundness of rolling roll using the measuring apparatus installed on bed of grinding machine. CONSTITUTION: The apparatus comprises a main body part which is installed on an upper part of bed of grinding machine, and in which carriage connected to the ball screw is moved side to side as ball screw connected to the motor is being rotated according to driving of motor; a measuring sensor unit part(300) moved side to side along with the carriage through main shaft installed between shaft fixing stand and shaft guiding stand of the main body part; and a system control part for storing and displaying profile and roundness data of the rolling roll measured through the measuring sensor unit part, wherein the main body part comprises base(258), motor fixing stand(248), motor(244), front and rear surface guide fixing stands, housing, a pair of supports, guide rail(254), a plurality of guide liners(232), carriage(230), ball screw nut, a pair of shaft fixing stands(210), ball screw(220) and shaft guiding stand(216), wherein the measuring sensor unit part comprises main shaft, idle bar, sensor cap, contact type displacement sensor(310), socket bolt, spring and contact bar(322), contact bar cap and beam sensor, and wherein the system control part comprises proximity sensor, displacement sensor amplifier, computer and input unit, and monitor and printer.

Description

Apparatus for measuring profile and true circle degree of rolling roll}

The present invention relates to a device for measuring the profile and roundness of a rolling roll, and in particular, by measuring the profile and roundness of the rolling roll by a measuring device installed on a bed of a grinding machine, thereby improving work efficiency and product quality. The present invention relates to an apparatus for measuring the profile and roundness of a rolling roll to be improved.

In general, the roll used in the hot rolling process has a thermal crown formed on the work roll due to the high heat of the strip, so that the initial crown (-) of the initial roll (-) is formed on the work roll according to the characteristics of each rolling stand. Initial Crown) is applied to the rolling work, and the fatigue and wear on the surface of the work roll increases during rolling, which leads to poor quality and mailing performance of the rolled product, thus performing ORD (On Line Roll Grinding) on the rolling stand. By grinding and using the rolling rolls, the product surface quality and the sheet flowability can be improved, and the rolling amount can be increased to form a large amount of slabs in one unit.

The initial crown is given according to the mill force, the sheet flowability, the material of the work roll, and the characteristics of each rolling stand, and the general crown amount is [FW: -0.15, GW: -0.20, HW: -0.20. , SP: -0.12, backup roll: 0], and the like are used.

If the correct crown is not formed during the rolling of the rolling roll or if the O.R.D work is wrong, the defective product is caused by the onion, medium wave, skew, twist, etc. of the strip during the rolling work.

Adjust the plate crown of the hot rolled steel sheet, the heat crown and the wear prediction model, which are elements of the plate shape control model for shape control, and after the rolling roll replacement to determine whether the correct crown is formed by performing the ORD operation precisely. Profile measurement of the rolling roll before polishing is required, and profile measurement of the rolling roll is necessary to determine whether an accurate crown is formed even after grinding.

1 and 2, a computer 1 equipped with a monitor 10, a key input unit 11 and a memory card 5 is installed on the upper side of the base 2, as shown in FIGS. The distance measuring wheel 6 and the encoder 14 and the support roll 7 are coupled to both ends of the bottom surface of the base 2, and the support bars 13 are coupled to both main surfaces of the base 2. The adjustment block 9 is provided along the support bar 13, and the adjustment block 9 is configured to be connected to the computer 1 by fastening the displacement sensor 3 and the temperature sensor 4.

Such a measuring device is installed on the upper part of the rolling roll 100 so that the position of the left and right displacement sensor 3 and the temperature sensor 4 face each other at the center of the rolling roll 100, and the displacement sensor 3 and After adjusting by using the adjusting block 9 so that the temperature sensor 4 is positioned on the central axis line of the rolling roll 100, the measuring device is measured while moving in the direction of the barrel (100-a) part to measure the displacement sensor. (3) and the signal output from the temperature sensor (4) is a device that converts and processes in the computer (1) to be output to the monitor (10) for display.

However, the large measuring device should be moved to the rolling roll position and seated on the upper surface thereof, and should be precisely aligned on the central axis line of the rolling roll, but it is difficult to make accurate adjustments by manual adjustment, and the displacement sensor 3 is rolled. The roll surface should always be contacted at exactly the same interval, but when moving in the barrel (100-a) direction, the operator should push the hand and measure it. Therefore, the measuring device moves in the direction of the barrel (100-a) and the gap changes. It is difficult to obtain a measured value, and there is a problem that only one direction can be measured in one direction.

In addition, rolling rolls are rolled while rotating at high speed in the state of being assembled to the choke bearings, so precise roundness in the circumferential direction is required, but rolling work is performed in poor roundness due to the wear of the chokes and bearings. If there is a problem that the thickness of the plate is not constant.

Accordingly, it is necessary to maintain the roundness and to repair the choke and bearings in which an abnormality occurs. Conventionally, since there is no device for checking the roundness, the measured value is obtained by using a micrometer at various points while turning the rolling roll in the circumferential direction. By checking the roundness, there is a problem in that precise measurement according to the measurement error and skill is not made.

The present invention has been made to solve the above-mentioned problems of the prior art, light and easy to move and easily measure the profile and roundness of the rolling roll to display the results on the monitor, and efficiently manage the rolling roll through print and data management It is an object of the present invention to provide a rolling roll profile and roundness measuring device that can improve work efficiency and product quality.

1 and 2 respectively show a conventional profile measuring device.

Figure 3 is a perspective view showing a profile and roundness measuring device of a rolling roll according to the present invention.

Figure 4 is an exploded perspective view of the profile and roundness measuring device of the rolling roll shown in FIG.

5A and 5B are an exploded perspective view and an assembled view of a measuring sensor unit in the profile and roundness measuring apparatus of the rolling roll of the present invention, respectively.

6 is a use state and installation cross-sectional view of the present invention.

7 is a cross-sectional view taken along the line A-A of FIG.

8 is a cross-sectional view taken along the line B-B in FIG.

9 is a cross-sectional view taken along the line C-C in FIG.

10 and 11 are graphs showing profile measured values before and after grinding rolling rolls.

12 and 13 are graphs showing roundness measured values before grinding and after grinding of rolling rolls.

14 is a configuration diagram of a system control unit in a profile and roundness measuring device for a rolling roll of the present invention.

15 is a flow chart illustrating the operational flow of the present invention.

<Explanation of symbols for main parts of drawing>

100: rolling roll 118: displacement sensor amplifier

220: ball screw 230: carriage

242: encoder 254: guide rail

310: contact displacement sensor 316: idle bar

318: main shaft 320: spring

328: Beam Sensor

Profile and roundness measuring device of the rolling roll according to the present invention for realizing the above problem is installed on the bed of the grinding machine, the carriage connected to the ball screw while the ball screw connected to the motor rotates according to the driving of the motor A moving body part; A measurement sensor unit which moves left and right with the carriage through a main shaft installed between the shaft fixing stand and the shaft guide; And a system controller for storing and displaying the profile and roundness measurement data of the rolling roll measured by the measuring sensor unit.

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

3 to 15 show one embodiment of the profile and roundness measuring device of the rolling roll of the present invention, the measuring device is connected to the ball screw while rotating the ball screw connected to the motor largely according to the driving of the motor A main body portion in which the carriage moves left and right, a measurement sensor unit portion moving left and right together with the carriage through a main shaft provided between the shaft fixing stand and the shaft guide, the profile of the rolling roll measured through the measuring sensor unit portion; It consists of a system control unit for storing and displaying roundness measurement data.

The main body 200 is installed on a bed of the polishing machine to act as a forward and backward measuring sensor unit, which will be described later, as shown in Figs. 3 and 4, the base 258 in the form of a square frame. Is fixed to the upper surface of the bed 23 of the grinding machine, the motor holder 248 having a 'b' shape on one side of the upper surface of the base 258 is fastened to the bolt (not shown). In addition, after the shaft of the motor 244 which is the driving source is inserted through the hole formed in the center portion of the vertical surface of the motor holder 248, the flange (in the state in which the key (246) is inserted in the bolt (not shown) is coupled) Flange 250 is fastened, and the flange 250 is fastened to another flange 252 is a key grooved to the inner surface.

In addition, the front guide guide 226 having a rectangular shape is fixed to the upper surface of the base 258 through two bolts 227, a rubber buffer bar (top) on one side top of the front guide guide 226 ( 228 is fastened, and a bolt (not shown) is fastened after the housing 222 into which the ball bearing 224 is inserted is inserted into the central hole of the front guide holder 226.

In addition, the rear guide guide 236 having the same shape at a predetermined interval with the front guide guide 226 is fixed to the base bolts (not shown) to the base 258, one side of the rear guide guide 236 will be described later The shock absorbing bar 228 made of a rubber material to cushion the shock when the carriage 230 is moved forward / backward is fastened, and the ball bearing 238 is inserted into the central hole of the rear guide guide 236.

Subsequently, two pedestals 256 having a hexahedron shape are fastened to a bolt (not shown) between the front guide holder 226 and the rear guide holder 236, and the upper surface of the pedestal 256 is viewed from the side of the 'ㅗ'. A guide rail 254 having a cross section of the shape of a magnet is mounted and bolts (not shown) are fastened to the inner surfaces of both guide holders 226 and 236. In this case, an inverted triangle (▽) is formed at the bottom of the upper surface of the guide rail 254. Four guide liners 232 are contacted with each other before and after the groove of the shape is processed and guided to the guide rail 254.

In addition, the upper surface of the guide liner 232 is fastened to a bolt (not shown) to a carriage (Carriage, 230) in which a plurality of nut holes are processed, the carriage is a rectangular shape of the guide liner 232 at each corner of the bottom surface ) Is fastened, a ball screw nut (234) is bolted (not shown) to the center of the bottom surface, and a pair of shafts having a 'ㅗ' shaped cross section viewed from the side on the upper surface of the carriage 230 Left and right lower ends of the fixing table 210 are bolted at predetermined intervals.

A hole having a predetermined diameter penetrates through a central portion of the inner surface of the shaft holder 210, and a rectangular cutout groove is formed at an upper side of the hole, and as a result of tightening the cutout groove through the bolt 211, a measurement sensor unit unit is provided. The 300 can be firmly fixed.

In addition, one end of the key groove 220-a is processed in the state in which the ball screw 220 penetrates the ball screw nut 234, and the key 218 is inserted into the front guide holder 226 and the housing 222. Assembled in the motor 244 through, the other end of the ball screw 220 is inserted into the rear guide guide 236 as the groove (220-b) and the square groove (220-c) is processed state Rotation of the motor 244 in the square groove 220-c while the stop ring 240 penetrates through the ball bearing 238 and is locked to the recess 220-b to prevent the ball screw 220 from being separated. After the square shaft 242-a protruding from one side of the encoder 242 that feeds back the number is inserted, the encoder 242 is fastened to the rear guide holder 236.

In addition, the left and right lower ends of the shaft guide 216 having a 'ㅗ' shaped cross section adjacent to the rear guide holder 236 is bolted to the upper surface of the base 258, the shaft guide A bush (214) is inserted into the upper central hole of the stand 216, and an air cylinder 212 for mechanically fixing the measuring sensor unit 300, which will be described later, at the point '0' is fixedly connected to the upper end of one side. The lower end of the shaft guide 216 is formed with a '' 'shaped opening so that the ball screw 220 can penetrate.

3 to 5, the idler bar 316 is inserted through the main shaft 318 through which the inside of the measuring sensor unit 300 extends in the longitudinal direction, and the main shaft ( The screw part 314-a of the sensor cap 314 is fastened to one nut part 318-a of the 318, and the contact displacement sensor 310 is inserted into the central hole of the sensor cap 314. The socket bolt 312 is fastened to the nut processed on the upper surface of the sensor cap 314.

The contact displacement sensor 310 automatically adjusts the '0' point at the time of profile and roundness measurement, and outputs the output value at the time of the measurement to the displacement sensor amplifier (AMP) 118 which will be described later at regular intervals.

In addition, the spring 320 is inserted into the inner diameter of the main shaft 318, the contact bar (322) is inserted, the nut portion (322-a) of the contact bar 322 is the idle bar ( A contact bar cap 324 fastened to the threaded portion 316-a of the 316 and having the same shape as the sensor cap 314 is provided by a nut 318 of the main shaft 318 by the threaded portion 324-a. -b).

The contact bar 322 is in direct contact with the rolling roll 100 to transfer the contact value with the rolling roll to the contact displacement sensor 310 through the idle bar 316, the spring 320 fastened to the idle bar Acts to push the idle bar 316 and the contact bar 322 to the front, the hole 324-b penetrated above the contact bar cap 324 detects the end of the rolling roll during profile measurement After the beam sensor 328 for automatically returning the measuring device is inserted, the nut 326 is fastened to both sides thereof to be fixed.

The system control unit stores data and displays the bar. As shown in FIGS. 6 and 13, the proximity sensor 108 is installed on the main shaft 22 of the polishing machine, and the displacement sensor amplifier AMP 118 is provided. The contact displacement sensor 310 is connected via a cable, and the displacement sensor amplifier 118 is connected to an input device 114 such as a computer 112 having a main CPU 110 and a keyboard. The monitor 112 and the printer 120 having the touch screen function are connected to the computer 112.

The displacement sensor amplifier 118 amplifies the data output from the contact displacement sensor 310, displays it and communicates with the main CPU 110 of the computer 112, and the computer 112 writes data. And a database, the monitor 116 reads a variety of data and displays them graphically on the screen, the printer 120 outputs a graphic screen and various data, and the proximity sensor 108 uses a rolling roll during roundness measurement. The number of revolutions of 100) is counted.

Referring to the operation of the profile and the roundness measuring device of the rolling roll according to the present embodiment configured as described above with reference to the flowchart of Figure 15 as follows.

In order to measure the profile and roundness of the rolling roll 100, as shown in FIG. 6, the operation starts in the state where the rolling roll 100 is set between the main shaft 22 and the tailstock 20 of the grinding machine. The measuring device according to the present invention is installed on the carriage 23 side bed 23 of the polishing machine, and the 'Z' axis feed is the Z axis feed motor 26 which is a transfer means of the carriage 24 which is an existing facility. Is made by.

First, when the operation is started, input the information of the work target roll to the input device 114 of the system controller [52] in the state where the measuring sensor unit 300 is located at the 'X' axis home position [51] of the polishing machine, The Z-axis feed motor 26 is driven to move to the 'Z' axis measuring point [53]. To start.

Thereafter, as shown in FIGS. 6 and 7, when the motor 244 is driven to rotate in the forward direction, the ball screw 220 rotates to drive the ball screw nut 234 so that the shaft fixing stand of the carriage 230 ( The measurement sensor unit 300 fixed to 210 moves forward with the guidance of the shaft guide 216. At this time, the encoder 242 feeds back the rotation speed of the motor 244 to the measurement sensor unit unit ( Recognizing the advance distance of 300, and advances [57] by a predetermined period (eg, 600 mm), the measurement sensor unit 300 is advanced [58] at a low speed.

Then, when the measuring sensor unit 300 is advanced at a low speed and the contact bar 322 is in close contact with the rolling roll 100 as shown in FIG. 8, the beam sensor 328 is the rolling roll 100. The motor 244 is stopped [60], the measuring sensor unit 300 is also stopped [61], and the air cylinder 212 is operated by receiving the stop signal of the motor 244 to measure the measuring sensor unit. Fix 300 mechanically at point '0'.

When the contact bar 322 is in close contact with the rolling roll 100 and the measurement sensor unit 300 is fixed in a stationary state in this process, the idle bar 316 fastened to the contact bar 322 is pushed backward. While the end portion of the idle bar (End) is in close contact with the contact displacement sensor 310, the contact displacement sensor 310 is automatically adjusted to the zero point (63).

Then, in the case of measuring the profile by determining whether to measure the profile [64], the Z-axis feed motor 26 is driven to move the carriage 24 to the 'Z' axis (Feed example: 1000 m / min) [ 65], the measurement apparatus moves in the direction of the barrel (100-a) portion of the rolling roll 100 to start measuring the profile data [66].

Next, when the profile measurement is started as described above, the output value to the contact displacement sensor 310 is output to the amplifier 118, the amplifier amplifies the signal data of the contact displacement sensor 310, the amplified data is the main CPU Data collection and calculation [67] is performed via 110, and the computer 112 reads data collected / operated from the main CPU 110 [68].

Subsequently, the measurement is continued in the direction of the barrel (100-a) portion of the rolling roll 100 when the measurement completion point [69], the beam sensor 328 detects the end of the rolling roll 100 to the Z-axis feed motor (26) is stopped to stop the carriage (24) and the measuring device [70].

When measuring the roundness by determining whether to measure the profile in the above process [64] [73], the roundness data while rotating the rolling roll 100 set at the polishing machine at low speed (eg 5 RPM) [74]. The output value to the contact displacement sensor 310 is output to the displacement sensor amplifier 118 as described in the above profile measurement method so as to start the measurement [66], and the displacement sensor amplifier 118 is the signal data of the contact displacement sensor 310. Amplify the data, and amplify the data through the main CPU 110 to perform data collection and calculation [67], and the computer 112 reads data collected / operated from the main CPU 110 [68].

When the profile and roundness data measurement is completed as described above, the air cylinder 212 is operated to release the fixing of the measuring sensor unit 300, and the motor 244 is reversely rotated [71] to measure the measuring sensor unit 300. Is completed at the 'X' axial groove position [72] to complete the measurement operation, determine whether the rolling roll 100 is being rotated [78], and if it is rotating, stop the rolling roll [79] and end the operation. .

When the data measurement is completed in the operation process, as shown in FIG. 14, the operator can check the computer 112 and check the graphic screen through the monitor 116, and the computer can perform the database operation [76]. It displays the classified data through the monitor and outputs the data if necessary [77].

Graphs of such data outputs are shown in FIGS. 10 and 11. Fig. 10 is a graph showing the measured roll roll profile before polishing, and Fig. 11 is a graph showing the measured roll roll profile after polishing.

12 is a graph which outputs the rolling roll roundness measurement value before grinding | polishing, and FIG. 13 is a graph which outputs the rolling roll roundness measurement value after grinding | polishing completion.

Profile and roundness measuring device of the rolling roll of the present invention as described above measures the profile and roundness of the rolling roll through a measuring device installed on the bed of the polishing machine, and displays the result graphically on the monitor, if necessary, Possible and efficient management of rolling rolls through database construction has a useful effect of improving work efficiency and product quality.

Claims (4)

A main body unit installed on the bed of the grinding machine and having a carriage connected to the ball screw left and right while the ball screw connected to the motor rotates according to the driving of the motor; A measurement sensor unit which moves left and right with the carriage through a main shaft installed between the shaft fixing stand and the shaft guide; And a system controller for storing and displaying the profile and roundness measurement data of the rolling roll measured by the measuring sensor unit. The method of claim 1, The main body includes a base, a motor holder coupled to one side of the upper surface of the base, a motor coupled to a key and a flange through the motor holder, and a shock absorbing bar made of a rubber material on an upper end of the base and fixed to an upper surface of the base. A front / rear guide guide, a housing coupled through the front guide guide, a pair of pedestals provided between the front / rear guide guides, a guide rail coupled to the front / rear guide guides on the upper surface of the pedestal, And a plurality of guide liners contacting the upper surface of the guide rail, a carriage to which the upper surface of the guide liner is coupled, a ball screw nut coupled to a central portion of the bottom of the carriage, and a predetermined distance from the upper surface of the carriage. A pair of shaft anchors, the ball screw nut, one end of which is assembled to the motor, and the other end of which Profile of the rolling roll comprising a ball screw coupled to the encoder through the rear guide fixture, and an axial guide guide through which the air cylinder is fixedly connected to an upper end of one side and installed on the upper surface of the base. And roundness measuring device. The method of claim 1, The measuring sensor unit unit has a main shaft penetrating in the longitudinal direction, an idle bar inserted into the main shaft, a sensor cap fastened to a nut part of the main shaft, and a contact displacement inserted into a central hole of the sensor cap. A sensor, a socket bolt fastened to an upper surface of the sensor cap, a spring and contact bar inserted into an inner diameter of the main shaft, a contact bar cap fastened to the main shaft through a screw formed on one side, and an upper side of the contact bar cap. Apparatus for measuring the profile and roundness of a rolling roll comprising a beam sensor inserted into the through hole. The method of claim 1, The system control unit includes a proximity sensor installed in the main shaft of the grinding machine, a displacement sensor amplifier (AMP) connected to the contact displacement sensor, a main CPU and a computer and an input device connected to the displacement sensor amplifier, and connected to the computer. Profile and roundness measuring device of a rolling roll comprising a monitor and a printer having a touch screen function.