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    • 91. 发明授权
    • Mill hydraulic screw-down
    • 磨机液压拧紧
    • US3974672A
    • 1976-08-17
    • US615102
    • 1975-09-19
    • John F. Herbst
    • John F. Herbst
    • B21B37/58B21B37/00B21B37/18B21B37/62B21B37/08B21B31/32B21B31/34
    • B21B37/62
    • A hydraulically driven mill screw-down including an optical encoder directly coupled to the hydraulic drive for producing digital signals representative of motion and direction of motion of the movable roll, a bidirectional counter for maintaining a cumulative count representative of roll position, a pulse source, a bidirectional reference counter for maintaining a count representative of desired roll position, a digital subtractor for producing a difference signal, an analog-to-digital converter for producing an analog signal proportional to the digital difference signal, a servo amplifier and a continuously variable hydraulic valve for controlling the application of fluid pressure to the hydraulic screw-down apparatus. Also disclosed is an emergency stop preset register for dumping an emergency stop desired position into the reference counter when actuated.
    • 一种液压驱动的轧机拧紧装置,包括直接耦合到液压驱动器的光学编码器,用于产生代表可动辊的运动和运动方向的数字信号,用于保持表示辊位置的累积计数的双向计数器,脉冲源, 用于维持表示期望的滚动位置的计数的双向参考计数器,用于产生差分信号的数字减法器,用于产生与数字差分信号成比例的模拟信号的模数转换器,伺服放大器和连续可变液压 用于控制向液压拧紧装置施加流体压力的阀。 还公开了一种紧急停止预设寄存器,用于当致动时将紧急停止期望位置倾倒到参考计数器中。
    • 98. 发明授权
    • Method and apparatus for cold rolling mill gauge deviation correction
    • 冷轧球磨机偏差校正的方法和装置
    • US3777524A
    • 1973-12-11
    • US3777524D
    • 1972-07-21
    • WESTINGHOUSE ELECTRIC CORP
    • SILVA ADANEHY RKITCHELL B
    • B21B37/00B21B37/16B21B37/18B21B37/64
    • B21B37/64B21B37/16B21B2271/02
    • Mill spring constant change signals are produced after each of a series of screwdown regulation cycles where each change signal is produced as a function of the ratio of the gauge deviation remaining after the regulation cycle, to the change in rolling force which occurred during the regulation cycle. The series of ratio change signals are then averaged to produce a mill spring constant correction signal which is used to correct the previously established mill spring constant. The corrected mill spring constant is then used to generate a new screwdown reference signal for the next series of regulation cycles. Provision is made to limit check and average gauge deviation so that the mill spring corrections are only made when certain predetermined gauge deviation limits are exceeded.
    • 在一系列拧紧调节循环中的每一个之后产生磨机弹簧恒定变化信号,其中每个变化信号作为调节循环后剩余的量规偏差的比值与在调节循环期间发生的轧制力的变化的函数产生 。 然后对一系列比例变化信号进行平均以产生用于校正先前建立的轧机弹簧常数的轧机弹簧常数校正信号。 然后使用校正的轧机弹簧常数来产生下一系列调节循环的新的螺丝参考信号。 作出了限制检查和平均量程偏差的规定,使得仅在超过某些预定的量程偏差极限时进行轧机弹簧校正。