JP2008111694A - Apparatus and method for measuring perpendicularity of roll and centering the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for measuring the perpendicularity of rolls to a line center and a method for determining the axis of the rolls. <P>SOLUTION: The apparatus for measuring the perpendicularity of rolls to a line center is provided with a mounting jig arranged in the vicinity of an end part of a roll, a rod-like member mounted to the mounting jig, and a laser range finer mounted to the tip of the rod-like member. The mounting jig and the rod-like member intersect the axis of the roll at right angles, and the laser range finder is mounted in such a way as to measure distances in parallel with the axis of the roll. The distance between a piano wire extended in parallel with the line center and the laser range finder is measured at two positions as rotating the roll, and the angle formed by the axis of the roll and the piano wire is adjusted in such a way that the two distances may be matched with each other. It is preferable that the diameter of a laser beam to be use by the laser range finder is smaller than the diameter of the piano wire to enable the measurement of a cross-sectional shape of the piano wire. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an apparatus for measuring an orthogonality of a roll to a line center and a roll orthogonal centering method.

  In the steel industry, when measuring the level and orthogonality of equipment, the equipment is large and difficult, and various methods have been proposed. When incorporating a rolling roll into a rolling mill, a piano wire is stretched along the rolling direction, and an arm with a micrometer attached to the tip is fixed to the roll perpendicular to the roll axis, and the roll is rotated. The distance between the piano wire and the micrometer has been measured at two locations.

  Patent Document 1 improves the measurement method by attaching a micrometer to an arm or attaching an arm to a roll, so that the measurement efficiency is inferior, and the measurement is visually recognized, resulting in individual differences in measurement results. A measuring method is described in which a plate-like reference member is suspended from a piano wire, and a measuring instrument in which two non-contact sensors are arranged at intervals on the peripheral surface of the roll. A concave portion is provided on the roll peripheral surface side of the measuring instrument, and the non-contact type sensor can be disposed along the roll axis by sandwiching a part of the roll peripheral surface. is there.

In Patent Document 2, a laser measuring device is arranged so as to be orthogonal to the axis of the roll, a measuring rod is attached to the roll and rotated to block a part of the laser beam of the laser measuring device, and the measuring rod is rotated. A method for measuring the level or orthogonality of a roll is described from the difference in the width at which the laser beam is blocked.
Japanese Utility Model Publication No. 62-97912 JP 63-118606 A

  However, according to the method described in Patent Document 1, if the roll is worn unevenly, the measuring device is not placed along the roll axis, and accurate measurement of the orthogonality of the roll axis with respect to the line center cannot be performed.

  In the method described in Patent Document 2, the measurement rod that blocks the laser beam needs to be orthogonal to the roll axis, but is attached to the roll via an attachment jig, and the attachment jig and the measurement rod are pin-coupled. Therefore, it is not easy to make them orthogonal.

  Then, an object of this invention is to provide the roll orthogonal centering machine which can make a roll axial center orthogonal to a line center easily, and the roll orthogonal centering method using the same.

The object of the present invention can be achieved by the following means.
1. A mounting jig disposed near one end of the roll, a single bar-shaped member mounted on the mounting jig, and a laser distance meter mounted on the tip of the bar-shaped member, the mounting jig and the bar-shaped member being a roll An orthogonal roll centering device, wherein the laser distance meter is attached so that a distance parallel to the axis of the roll can be measured.
2. 2. The roll orthogonal centering device according to claim 1, wherein the laser distance meter is capable of measuring a cross-sectional shape of a piano wire.
3. The roll orthogonal centering device according to 1 or 2, wherein a laser beam diameter used in the laser distance meter is smaller than a diameter of a piano wire.
4). 4. The roll orthogonal centering device according to any one of 1 to 3, wherein the laser beam diameter is 100 μm or less.
5. After measuring the distance between the piano wire stretched parallel to the line center and the laser distance meter with the laser distance meter of the roll orthogonal centering device according to any one of 5.1 to 4, the roll is further rotated. Next, when the laser distance meter crosses the piano wire, the distance between the piano wire and the laser distance meter is measured, and an angle formed between the roll axis and the piano wire so that these two distances coincide with each other. A roll orthogonal centering method characterized by adjusting the roll.
6). 6. The roll orthogonal centering method according to claim 5, wherein the distance between the piano wire extending parallel to the line center and the laser distance meter is the shortest distance among the distances obtained by scanning the piano wire with a laser. .
7). 7. The roll perpendicular centering method according to 5 or 6, wherein the laser beam diameter is 100 μm or less.

  According to the present invention, since a measurement error by an operator does not occur, the roll axis can be accurately orthogonal to the line center, which is extremely useful industrially.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram for explaining the configuration and measuring method of a roll orthogonal centering device according to the present invention, in which (a) is a top view and (b) is a front view. In these figures, 1 is a roll, 2 is a piano wire, 3 is a mounting jig, 3a is a rod-shaped member, 3b is a laser distance meter, a and b are distances, c is a roll axis, L1 is a measurement interval, and L2 is a roll length. Indicates.

  The roll orthogonal centering device according to the present invention includes an attachment jig 3 disposed in the vicinity of one end of the roll 1 and a single rod-shaped member 3 a attached to the attachment jig 3.

  A laser distance meter 3b is attached to the tip of the rod-like member 3a, and the rod-like member 3a is attached so as to be orthogonal to the roll axis C.

  In the case of making the roll axis perpendicular to the line center with the roll orthogonal corer according to the present invention, first, the distance a to the piano wire 2 stretched parallel to the line center is measured with the laser distance meter 3b, and then the roll The distance b between the piano wire 2 stretched parallel to the line center and the laser distance meter is measured again (FIGS. 1 (A) and (B)).

  Then, from the difference between the distances a and b: Δl, the adjustment amount x at the end of the roll is obtained using Equation (1).

Δl: x = L1: L2 (1)
By moving one of the left and right roll shaft ends by the adjustment amount x, the roll axis can be orthogonal to the line center.

  In the roll orthogonal centering device according to the present invention, it is preferable that the laser distance meter is capable of measuring the cross-sectional shape of the piano wire (substantially semicircular portion facing the roll) because the orthogonality is further improved.

  The peak value (shortest distance) in the cross-sectional shape of the piano wire is a value obtained by irradiating the cylindrical cross-section of the piano wire from the vertical direction. It is preferable to use the value for the distances a and b used for calculating Δl in the above equation (1) because the adjustment amount x can be obtained with higher accuracy.

  Furthermore, if the laser beam diameter used in the laser distance meter is large, the amount of reflected light of the laser beam from the piano wire decreases and the detection accuracy decreases. Therefore, the laser beam diameter is preferably 100 μm or less, for example 50 μm, which is thinner than the diameter of the piano wire (usually 0.5 mm diameter).

  FIG. 2 is a block diagram showing an example of the signal processing system 4 of the roll orthogonal centering device described above. The distance signal from the laser distance meter 3 b is amplified by the amplifier 7 and transmitted to the signal processor 5. A display 9 is attached to the signal processor 5, and the adjustment amount x obtained by the above equation (1) is displayed. The signal processor 5 is driven by the battery 6 so that it can be easily used at the operation site.

  The case where there is one rod-like member has been described above, but it is also possible to shorten the measurement time by using a plurality of rod-like members and a plurality of laser distance meters.

In the present invention example, (A) is a top view and (B) is a front view. The figure which shows the structural example of a control system suitable for the roll orthogonal centering device which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roll 2 Piano wire 3 Mounting jig 3a Bar-shaped member 3b Laser distance meter 4 Signal processing system 9 Display a, b Distance c Roll axis L1 Measurement interval L2 Roll length

Claims (7)

  A mounting jig disposed near one end of the roll, a single bar-shaped member mounted on the mounting jig, and a laser distance meter mounted on the tip of the bar-shaped member, the mounting jig and the bar-shaped member being a roll An orthogonal roll centering device, wherein the laser distance meter is attached so that a distance parallel to the axis of the roll can be measured.   2. The roll orthogonal centering device according to claim 1, wherein the laser distance meter is capable of measuring a cross-sectional shape of a piano wire.   The roll orthogonal corer according to claim 1 or 2, wherein a laser beam diameter used in the laser distance meter is smaller than a diameter of a piano wire.   The roll orthogonal corer according to any one of claims 1 to 3, wherein a laser beam diameter is 100 µm or less.   The roll distance measuring device according to any one of claims 1 to 4, wherein the distance between the piano wire stretched parallel to the line center and the laser distance meter is measured, and then the roll is further rotated. Next, when the laser distance meter crosses the piano wire, the distance between the piano wire and the laser distance meter is measured, and an angle formed between the roll axis and the piano wire so that these two distances coincide with each other. A roll orthogonal centering method characterized by adjusting the roll.   6. The roll orthogonal core according to claim 5, wherein the distance between the piano wire stretched parallel to the line center and the laser distance meter is the shortest distance among the distances obtained by scanning the piano wire with a laser. Dashi method.   7. The roll orthogonal centering method according to claim 5, wherein a laser beam diameter is 100 μm or less.

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