JPS58129202A - Device for measuring online roll profile - Google Patents

Abstract

PURPOSE:To measure the profile data of rolls actually during rolling by detecting the diameter of the roll by the detecting part for roll diameters and repeating measurements while moving the detecting part in the longitudinal direction of the roll by means of a moving motor. CONSTITUTION:A detecting part 3 for roll diameters is set in the position at one end of a work roll 1 by a position sensor 7 for the detecting part and an operator 11, and pressing force is exerted upon a detecting rod 8 for roll diameters to bring the rod into contact with the roll 1. From the number of revolutions of the roll 1 during rolling, the time required for one turn of the roll is determined with a detector 12 for the revolutions of the work roll, a generating part 13 for time clocks, and an arithmetic part 14 for roll diameters. The part 3 feeds the roll diameter signal detected along the circumferential direction to the part 14 so that the roll diameter is calculated by averaging. While the part 3 is moved with a moving motor in the longitudinal direction of the roll 1, the measurements are repeated, and profiles are calculated and displayed in a profile operating and recording part 15 upon receiving of the data signal thereof.

Description

Detailed Description of the Invention (jL) Description of the Technical Field The present invention relates to an online roll profile measuring device used for plate crown control in metal plate rolling.

(b) Description of the prior art In conventional plate crown control, since there was no online measurement method for the roll profile, roll wear and roll thermal expansion were estimated as a function of the crushing effect, and the control model was calculated based on this. was going on. However, in this method, the fact that the value varies depending on the steel type and dimensions of the rolled material, or the rolling schedule and rolling pitch cannot be reflected in the control model, which is a constraint for improving control accuracy.

(C) Object of the Invention The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an online roll profile measuring device that does not have the above drawbacks and can actually measure roll profile data during rolling.

(d) Structure and operation of the invention The present invention will be explained below with reference to the drawings. In FIGS. 1 to 3, reference numeral 1 indicates a work roll for plate pressure grinding, and reference numeral 2 indicates a backup roll. It consists of a work roll 1 and a backup roll 2Fi, an upper and lower pair, but only the upper side is shown here. 3 is the roll diameter detection part of the present invention;
Its configuration is shown in FIG. In the same figure, 8 is a roll diameter detection rod having a roller at its tip that rotates in contact with one surface of the work roll, 9Fi, a ninth four-wheel diameter detection differential transformer that detects the movement of the roll diameter detection rod 8, and 1o. 1 is a roll diameter detection cylinder which functions as an air compressor to apply pressing pressure to the work roll 1 to the roll diameter detection rod 8.

Further, 4 is a detection part moving screw for moving the four-roll diameter detection part 3 in the longitudinal direction of the work roll 1, and 5 is a detection part for electric signals and air pressure required by the roll diameter detection part 3. A cable, 6 is a detection unit moving motor that drives the movement of the roll diameter detection unit 3, and 7 is a detection unit position sensor attached to the shaft end of the detection unit movement motor 6 to detect the movement position of the roll diameter detection unit 3. A rotation pulse is generated.

FIG. 3 shows a block diagram for calculating the roll profile, in which 11 counts pulses output from the detector position sensor 7 and generates a position signal for the roll diameter detector 3; 12 is a detector position calculator; A rotation speed detector for the work roll 1 and a time clock generator for determining the 13Fi roll diameter detection time. 1 and 14 are roll diameter detection parts 3
a roll diameter calculating section 15 that calculates the roll diameter from the roll diameter signal output from the work roll rotation speed signal output from the work roll rotation speed detector 13 and the clock signal output from the time clock generator 13; This is a roll profile calculation/storage unit that calculates and records a roll profile based on roll diameter data along the longitudinal direction of the work roll.

The explanation of the configuration is now complete, and next, the operation of the present invention will be explained. That is, first, the roll diameter detection section 6 is set at one end position of the work roll in response to a roll profile measurement start instruction. Next, pressing and sealing pressure is applied to the roll diameter detection rod to bring it into contact with the work roll 1. The time required for one revolution of the work roll 1 is determined from the number of rotations of the work roll during rolling, and the roll diameter detection unit 3 is stopped at this position during this measurement time. The roll diameter signals detected along the circumferential direction of the work roll are averaged to obtain a roll diameter value at a position in the longitudinal direction of the work roll.

Thereafter, the roll diameter detection unit 3 is moved in the longitudinal direction of the work roll and the same measurement is repeated. The roll diameter and absolute value are determined by zeroing the roll diameter from the pre-given roll diameter value (determined during roll processing) and the actual measurement value at one end of the measurement start, and then calculating the deviation from the C zero adjustment value. The roll diameter value for each measurement point is determined by: An example of calculating and recording the roll diameter value at each measurement point is shown in FIG. In the figure, D is one roll profile, which is plotted on the roll diameter value at each measurement point and connected.

(・) 11. Effects As explained above, according to the present invention, it is possible to continuously measure the roll profile during rolling, and the accuracy of shape control of the pressed material can be greatly improved. I can do it.

[Brief explanation of the drawing]

Fig. 1 is an overall conceptual diagram of the online roll profile measuring device, Fig. 2 is a conceptual diagram of the beam diameter detection section, Fig. 3 is a calculation block diagram of the enlarged roll profile calculation section, and Fig. 4 is a roll profile storage section. It is a record diagram of. 1...Work roll '2...Backup roll 3...Roll diameter detection part 4...Detection part moving screw 5...Detection part cable 6...Detection part movement motor 7...Detection part Position sensor 8... Roll diameter detection rod 9... Roll diameter detection differential transformer 10... Roll diameter detection cylinder 11... Detection part position calculator 12... Work roll rotation speed detector 13. ... Time clock generator 14 ... Roll diameter calculation section 15 ... Roll profile calculation recording section (731
7) Agent Patent attorney Nori Den Yu Chika (and 1 other person) Figure 1 Figure 3 Figure 4 Wharf 0-Longitudinal slope fl direct

Claims (1)

[Claims] A roll diameter detection rod that has a roller at its tip that rotates in contact with the work roll surface and detects the roll diameter, a roll diameter detection differential transformer that detects the movement of the roll diameter detection rod, and a roll diameter detection rod that detects the movement of the roll diameter detection rod. a roll diameter detection section consisting of a qle diameter detection shilling that applies pressing pressure to the work roll, a detection section moving screw that moves the roll diameter detection section in the longitudinal direction of the work roll, and the roll diameter detection section. An on-line roll profile measurement device characterized in that it is equipped with a detection unit movement motor that drives the movement of the μm loop p-fil continuously in pressurized air, and updates control variables of a plate crown control model from this actual signal. .