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    • 3. 发明专利
    • CENTERING METHOD FOR ROLL GRINDING MACHINE
    • JPH08281539A
    • 1996-10-29
    • JP9087595
    • 1995-04-17
    • NIPPON KOKAN KK
    • AKECHI YOSHIHIROOHIRA KAZUYOSHIIRIE TOSHIAKIHONBO KATSUHIROMORITA YOSHIYUKIIIZUKA YUKIMICHI
    • B24B41/04B24B5/00B24B5/37
    • PURPOSE: To accurately carry out centering even in the case of the existence of an eccentricity by regulating a movable shaft base as much as the sum of the difference of horizontal displacement at the right and left ends of a ground roll, the difference of radii at right and left ends in a horizontal plane including the center of a roll figure, and the difference at right and left ends of the horizontal eccentric quantities of a rotation center and of a figure center. CONSTITUTION: The horizontal components, e1 , e2 of the eccentric quantity from a roll rotation shaft of the circle center in the case where the shape of a roll near both the shaft ends of a ground roll is assumed to be a circle are computed by an eccentric quantity computing means 4 from relation between a rotary angle measured severally by a rotation detector 2 and a displacement gage 3 and the displacement from the locus of the tip of a rotary grinding wheel on the outer periphery of the roll. Correcting quantity L=(d2 -d1 )+(D2 -D1 )/2(e2 -e1 ) is computed on the above computed result. The movable shaft base 32 is moved as far as this correcting quantity to make the traverse direction of a wheel spindle stock parallel to the direction of the rotating shaft of the roll. In this expression, d1 and d2 are horizontal deflections of right and left ends of the roll to the locus of the tip of the grinding wheel, and D1 and D2 are the roll diameter at right and left ends.
    • 6. 发明专利
    • SIDE GUIDE
    • JPH01313106A
    • 1989-12-18
    • JP14600288
    • 1988-06-14
    • ISHIKAWAJIMA HARIMA HEAVY INDNIPPON KOKAN KK
    • KATAYAMA TADASHIKAWASAKI TAKAMASAOHIRA KAZUYOSHI
    • B21B39/00B21B39/14
    • PURPOSE:To push a metal body out of a line without interference by guide bodies by turning at least one of a pair of guide bodies guiding both sides of the metal body around a shaft extending in the guide length direction and lowering the top face of the guide than a position of the bottom face of the metal body. CONSTITUTION:In a case that a slab is rolled by a rough rolling mill and cambers and waved cobbles are generated, the slab is not pushed out of a line from on a roller table 3 by interference by a side guide because a cobble top reaches the side guide installed in the inlet side of an edge heater 5. A guide body 17 at a skid 9 side is installed to be freely fallen, so that guide bodies 17,17' are put in a max. open position and the body 17 at the skid 9 side and a bell mouth guide 20 are installed on a straight line in the line direction as shown by fictitious line. After that, cylinders 25,33 are extended to fall the guide body 17 and bell mouth guide 20 and to bring the top face of a guide head 18 and the guide 20 to flush with or to be lower than the carrying table face of the table 3. Then, a pusher 7 is actuated to push out the cobble on the table 3 onto the skid 9.
    • 10. 发明专利
    • MEASURING METHOD FOR ROLL CORE
    • JPS63118606A
    • 1988-05-23
    • JP9812686
    • 1986-04-30
    • NIPPON KOKAN KK
    • OHIRA KAZUYOSHI
    • B21C51/00B21B31/16B21B38/10G01B11/26
    • PURPOSE:To measure the levelness of a roll built in a stand in a short time with high accuracy by measuring the levelness, etc., of the roll on the basis of the difference in the distance from one breadthwise end of a measured laser beam to the position of a measurement rod. CONSTITUTION:The laser measuring instrument 4 consisting of a light emitting device 6 and a light receiving device 8 which have a slit laser beam emission port 7 and a light reception port 9 provided to respective ends of a base board 5, and a means which adjusts the positions of both end parts of the base board 5 is arranged nearby one end part of the roll 1 built in the stand at right angles to the axis of the roll, and the measuring instrument 4 is aligned by a specific method. Then, the measurement rod 13 is fitted to one end of the roll 1 (or while the roll 1 is rotated by a specific angle) so as to cross the upstream (or downstream) part of the laser beam from the light emitting device 6, part of the laser beam which is received 8 is cut off by the rod 13, and the distance from one breadthwise end of the laser beam to the position of the rod 13 to measure the levelness or squareness of the roll 1.