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81. 发明专利

JPS5994517A ROLLING MILL 失效
公开(公告)号：JPS5994517A
公开(公告)日：1984-05-31
申请号：JP20338382
申请日：1982-11-19
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： KAZAMA KUNIYOSHI , IMAI ISAO
IPC分类号： B21B31/06 , B21B37/00 , B21B37/48 , B21B38/06
摘要： PURPOSE:To detect highly reliably and accurately a force working on a mill stand, by utilizing the elastic deformation of an elastic body, supporting a mill stand, for detecting a force, etc. resulting from a turning moment working on the stand. CONSTITUTION:When a rolling material P is rolled by upper and lower work rolls 6, 7 of a mill stand 8, a force F1 works on the stand 8 to produce a turning moment in the X direction. At that time, because the stand 8 is mounted on a torsion bar 2 and fixed to it through a holding frame 4 of the stand 8, a cylindrical part 2a of the bar 2, which is an elastic body, is twisted clockwise to produce a torsional strain, and a sensor 12 in the inside of the cylindrical part 2a generates an electric signal coresponding to the amount of the turning moment, thereby the force F1 is detected. On the other hand, when a force F2 works, the stand 8 rotates in the Y direction to produce a counterlockwise torsional strain in the cylindrical part 2a of the bar 2, and the sensor 12 generates an electric signal corresponding to the strain to detect the force F2.

82. 发明专利

JPS5884607A TENSION CONTROLLER FOR HOT STRIP MILL 失效
公开(公告)号：JPS5884607A
公开(公告)日：1983-05-20
申请号：JP18253781
申请日：1981-11-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： MIURA KEIICHI
IPC分类号： B21B1/26 , B21B15/00 , B21B37/00 , B21B37/48 , B21B38/06 , B21B39/00 , B21C47/00
摘要： PURPOSE:To improve the shape of coils and the workability in coiling work in the stage of coiling hot strips on coilers by detecting the tension of the strip between finishing mills and pinch rolls and controlling said tension so that the same attains prescribed value. CONSTITUTION:When a strips arrive S at a final finishing stand F7, backward tension Tb is operated with a backward tension operating device 18. When the preceding end of the strip S arrives at a detector 25, a coefft. (a) of torque arm is operated and is stored. In this state, the speed command value of the speed controller 6 for pinch rolls 4 is applied with a predicted synchronizing speed command value by using the output from a speed detector 10 for the stand F7. When the preceding end of the strip S advances further and arrives at a detector 26, tension is detected and operated by an operating device 20. Tension control is started with a controller 22 and the tension between the stand F7 and the rolls 4 is controlled so as to attain prescribed value at all times, whereby the collapsion of the coiled shape is prevented and coiling work is performed more effciently.

83. 发明专利

JPS5842910A LENGTH MEASURING DEVICE FOR STRIP 失效
公开(公告)号：JPS5842910A
公开(公告)日：1983-03-12
申请号：JP14023181
申请日：1981-09-08
申请人： NIPPON STEEL CORP
发明人： FURUI KIMIHARU , KAWAI TOSHIAKI , TERAHARA KOUICHI
IPC分类号： B21B38/06 , G01B21/06
摘要： PURPOSE:To obtain an accurate length measuring device for strips which prevents strips from slipping on rolls, by using the rolls having slip preventing grooves in their surfaces, and connecting a pulse transmitter to the rolls. CONSTITUTION:Each tension meter roll 2 have grooves 3 over the overall width of the tension meter roll 2. Normally, those grooves are favorably >=50% of the overall width of the tension meter roll, and each groove may be separated independently as far as they succeed over the overall length of the roll. This constitution eliminates a slip between a strip 1 and the tension meter roll 2, so the actual length of the strip is measured accurately from the rotational frequency of the tension meter roll.

84. 发明专利

JPS5626620A DETECTING METHOD FOR TENSION OF ROLLED MATERIAL 失效
公开(公告)号：JPS5626620A
公开(公告)日：1981-03-14
申请号：JP10300079
申请日：1979-08-11
申请人： MITSUBISHI ELECTRIC CORP , NIPPON STEEL CORP
发明人： YOSHIDA FUMIO , MIURA KEIICHI , NAKASHIMA OKINORI
IPC分类号： B21B37/48 , B21B37/00 , B21B38/06 , H02P29/00
摘要： PURPOSE:To greatly improve the torque loss detecting accuracy, and to improve the rolled material's front tension detecting accuracy, by treating the torque loss as the function of the rolling load additionally to the rotational speed, when the tension is obtained from the rolling load, the armature current of the motor, the magnetic flux and the rotational speed of the rolling mill. CONSTITUTION:The signal for each of the back tension Tb of the rolled material 3 fed into the rolling mill 1 to be detected by the detector 4, the rolling load F, and the armature current I, the magnetic flux phi, the rotational speed N, of the motor 2, is inputted to the front tension detector 5. In general, the torque loss consists of the motor's iron loss, the windage loss and the rolling mill's reduction gear loss and bearing friction loss. The electric current loss and torque loss arithmetic units 10, and 11, 12, operate the losses, and the subtractors 13, 8a, 8b, subtract these losses. The multiplier 7 operates the torque to be generated by the motor, and this value is treated by above stated subtraction; hereby, the rolling torque G is obtained. From this rolling torque G, the rolling load F, and the back tension Tb, the tension arithmetic unit 9 operates the front tension Tf.

85. 发明专利

JPS5626617A DETECTING METHOD FOR INTERSTAND TENSION IN CONTINUOUS ROLLING WORK 失效
公开(公告)号：JPS5626617A
公开(公告)日：1981-03-14
申请号：JP10299779
申请日：1979-08-11
申请人： MITSUBISHI ELECTRIC CORP , NIPPON STEEL CORP
发明人： HAMAZAKI YOSHIHARU , WATANABE FUMIO , NAKASHIMA OKINORI
IPC分类号： B21B37/48 , B21B38/06
摘要： PURPOSE:To reduce the front tension detecting error generated by filtering the back tension, when the front tension of the i-th stand is to be obtained from the rolling torque, the rolling load, and the filtered back tension, by changing the time constant of the noise elimination at a specified timing. CONSTITUTION:Before the lock-on timing, at which the reference torque arm is operated just before the rolled material 1 is fed to the (i+1)-th stand 3, the time constant of the back tension (front tension of the former stand) filter 4 is made small in order to make the phase delay small. Just after the lock-on, in order to eliminate the noise component of the detected tension waveform as much as possible, the time constant is made large and is set to a specified value. On this purpose, the filter's time constant changing device 8 is installed in order to make the phase delay small between the true back tension waveform A1 and the filter's output signal waveform A2 just after the material 1 is fed to the i-th stand. Hereby, the back tension error DELTATi-1L becomes small, and the normal error DELTATi of the front tension also becomes small.

86. 发明专利

JPS55142224A DETECTION METHOD OF TENSION 失效
公开(公告)号：JPS55142224A
公开(公告)日：1980-11-06
申请号：JP5048879
申请日：1979-04-24
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： NAKASHIMA OKINORI , WATANABE FUMIO , HAMAZAKI YOSHIHARU , TOGANOU HIDEHARU
IPC分类号： B21B37/48 , B21B37/00 , B21B38/06
摘要： PURPOSE:To enable highly-accurate detection, by estimating coefficients for calculating the fluctuation in a torque arm, from the incoming plate thickness, outgoing plate thickness, rolling force and measured torque arm in real rolling. CONSTITUTION:The fluctuations DELTAHiM, DELTAhiM, DELTAPiM, aiM-aiLin the in coming plate thickness, outgoing plate thickness, rolling force and torque arm at an i-th stand 2 from the time of locking-on before the biting-in of a rolled material 1 into an (i+1)- th stand 3 are used to compute torque arm fluctuation coefficients K1, K2, K3 by a calculator 15. After the rolled material 1 is bitten into the stand 3, the coefficients K1-K3, the fluctuations DELTAHi, DELTAhi, DELTAPi in the incoming plate thickness, outgoing plate thickness and rolling force at the stand 2 from the time of locking-on and the locking-on arm torque arm aiL are used to perform computation by another calculator 50. The torque arm ai and the rolling torque Gi, rolling force Pi and rear tension Ti-1 at the stand 2 are used to determine tension Ti by another calculator 60. Data on real rolling are thus used to perform estimation to attain high accuracy.

87. 发明专利

JPS5580024A DEVICE FOR DETECTING TENSION AND COMPRESSIVE FORCE BETWEEN STANDS IN CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS5580024A
公开(公告)日：1980-06-16
申请号：JP15436778
申请日：1978-12-12
申请人： FUJI ELECTRIC CO LTD
发明人： SHINOKURA TSUNEKI
IPC分类号： G01L5/00 , B21B31/02 , B21B37/00 , B21B38/06 , B21C51/00
摘要： PURPOSE:To improve the precision of measurement and the reliability by providing curved face seats with rollers, which are slightly deviated from the center of the roll, between the base of the roll chock and the housing beam and by detecting the side load applied to the roll chock. CONSTITUTION:The curved face seats 8, 9, which are deviated from the center of the roll by a slight distance a, are provided between the base of the lower roll chock 6 and the housing beam 2, plural rollers 10 are placed between both the curved face seats 8, 9. The pressure detector 11 made contact with the housing post 1 is incorporated in the side of the lower roll chock 6. When an external force is not applied to the material 5 while rolling the material, a side load TO is produced. When a forward tension sigmaF or backward tension sigmaB is applied to the material, a side load TF or TB is produced, its magnitude T is proportional to the external force sigma. Accordingly the magnitude and direction of the external force can sensitively be detected from the variation (T-TO) of the side load measured by the pressure detector 11 to improve the precision of measurement and the stability.

88. 发明专利

JPS5428104B2 失效
公开(公告)号：JPS5428104B2
公开(公告)日：1979-09-13
申请号：JP12639574
申请日：1974-10-31
IPC分类号： B21B31/24 , B21B38/06 , B21C51/00 , G01L5/00

89. 发明专利

JPS5428102B2 失效
公开(公告)号：JPS5428102B2
公开(公告)日：1979-09-13
申请号：JP8548474
申请日：1974-07-24
IPC分类号： G01L5/00 , B21B38/06 , B21C51/00

90. 发明专利

JPS5492379A DETECTING METHOD OF TENSION OR COMPRESSIVE FORCE ACTING UPON METERIAL UNDER ROLLING 失效
公开(公告)号：JPS5492379A
公开(公告)日：1979-07-21
申请号：JP15780277
申请日：1977-12-29
申请人： FUJI ELECTRIC CO LTD
发明人： SHINOKURA TSUNEKI
IPC分类号： B21B37/48 , B21B31/02 , B21B38/06 , G01L5/00
摘要： PURPOSE:To detect the tension or compressive force of the material under rolling by providing curved seats deviating slightly from the vertical centerline between the bottom face of a roll chock and housing beam and measuring the pressure being exerted to roll post. CONSTITUTION:The housing post 1 and housing lower beam 2 of a rolling mill support upper and lower rolls 3, 4 by way of roll chocks 5, 6. Curved jigs 7, 8 deviated slightly from the center-line of the housing are installed between the lower roll chock 6 and housing beam 2. Also arrangement is so made that a ressure detector 9 in contact with the housing post 1 is provided to the lateral portion on the side opposite from the side where the curved jigs 7, 8 deviate. As a result, if the measured value of the pressure detector 9 is compared with the values having before hand been measured at the rolling under no tension and no compressive pressure, the tension or compressive force of the material under rolling may be detected with the simple constitution.

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