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1. 发明专利

JPS61206512A DEVICE FOR PREVENTING CHATTERING IN COLD ROLLING 失效
公开(公告)号：JPS61206512A
公开(公告)日：1986-09-12
申请号：JP4459385
申请日：1985-03-08
申请人： NIPPON KOKAN KK
发明人： OZAKI DAISUKE , KUBOYAMA KIYOSHI , MATSUURA TOSHIAKI , SHIYARIYOU TAKESHI , YOKOTA KAORU , SUMIYA KATSUJI
IPC分类号： B21B1/22 , B21B1/28 , B21B11/00 , B21B33/00 , B21B37/00 , B21B37/74 , B21B45/02
摘要： PURPOSE:To reduce sheet breakage and sheet-thickness variation by providing a vibrometer for detecting the vibration of a housing and controlling rolling conditions based on its control signal. CONSTITUTION:A strip 45 is cold rolled by the stands 40-44 of a tandem cold mill. A vibrometer 10 is attached to the housing 44a of stand 44, and a computing element 20 and a rolling-condition control circuit 30 for controlling rolling conditions are provided to the stand 44. Based on the value of an intrinsic frequency of the mill group, a definite vibrating speed corresponding to said frequency is used as a threshold level of chattering generation. When the vibrating speed of housing 44a exceeds the threshold level, the computing element 20 inputs a signal of vibrometer 10 to output a control signal to the circuit 30. Further, a control circuit 31 controls the flow rate of coolant. In this way, the chattering is prevented, and sheet breakage and sheet-thickness variation are reduced.

2. 发明专利

JPS59173720A Method and device for diagnosing vibration of low-speed rotary machine 失效
标题翻译：用于诊断低速旋转机械振动的方法和装置
公开(公告)号：JPS59173720A
公开(公告)日：1984-10-01
申请号：JP4793983
申请日：1983-03-24
申请人： Nippon Kokan Kk
发明人： KANAO YOSHIYUKI , NAKAMOTO TADASHI , KUBOYAMA KIYOSHI
IPC分类号： G01H13/00 , G01H1/00 , G01H17/00
CPC分类号： G01H1/003
摘要： PURPOSE:To discriminate easily a degree of abnormality from a distribution of a histogram at a working site by amplifying a vibration signal from a vibration sensor, and thereafter, rectifying it, calculating the number of times of the maximum value of a vibration, and a period between the maximum values, and preparing the histogram. CONSTITUTION:A vibration in case when a low speed rotary machine is rotating is measured by a vibration sensor 1, and a waveform of its vibration is supplied to an amplifying circuit 2. This signal is supplied to a rectifying circuit 3 directly or through a filter in case when frequency of an abnormal vibration is already known, and a rectified waveform is obtained. This rectified waveform is supplied to a peak detector, a peak value of a vibration signal whose level is varied is held for a constant interval of time, the periodicity of a variation is made remarkable, and thereafter, said waveform is sent to a microcomputer 5. This waveform is A/D-converted, and a histogram is prepared by calculating the number of times of the maximum value and the period between the maximum values. A degree of abnormality can be discriminated easily from a distribution of this histogram at a working site.
摘要翻译：目的：通过放大来自振动传感器的振动信号，在工作现场通过放大振动信号，容易地区别异常的分布，然后对其进行整流，计算振动的最大值的次数和最大值之间的周期，并准备直方图。构成：通过振动传感器1测量低速旋转机械旋转的情况下的振动，将其振动波形供给到放大电路2.该信号直接或通过滤波器供给至整流电路3 在异常振动的频率已知的情况下，得到整流波形。该整流波形被提供给峰值检测器，其电平变化的振动信号的峰值保持恒定的时间间隔，变化的周期性显着，然后将所述波形发送到微型计算机5 该波形进行A / D转换，并通过计算最大值的次数和最大值之间的周期来准备直方图。在工作现场可以容易地区分这种直方图的分布。

3. 发明专利

JP2000121314A IN-LINE SETTING METHOD AND APPARATUS FOR EDGE CRACKING/ PITTING DETECTOR AND APPARATUS FOR STRIP OBJECT 失效
公开(公告)号：JP2000121314A
公开(公告)日：2000-04-28
申请号：JP29489698
申请日：1998-10-16
申请人： NIPPON KOKAN KK
发明人： ISHIDA SHIGEO , YAMAZAKI TOKINOBU , WAKABAYASHI TOKUO , KUBOYAMA KIYOSHI
IPC分类号： G01B11/00 , G01N21/89
摘要： PROBLEM TO BE SOLVED: To eliminate severe work requiring the building of a temporary scaffold at a narrow place by a method wherein a detector can be installed within an online quickly and accurately simply by transporting the detector on a transport car to be fed into an online installation frame through a guide rail. SOLUTION: A defect detector 1 with a U-shaped frame for a strip object is supported being hoisted on a with a running roller 11 thereof engaged on a guide rail 44 of the transporting car 40 and the transporting car is carried near an online installation frame with a steerable wheel 48 (48C) on a floor. Then, the rides into a floor guide rail 60 mounted on the floor near the online installation frame 20 and connects the guide rail thereof to a guide rail 26 of the online installation frame and moves onto the guide rail 26 of the online installation frame to install the defect detector in a line.

4. 发明专利

JPS6233015A SHAPE CONTROLLING DEVICE FOR ROLLER LEVELER 失效
公开(公告)号：JPS6233015A
公开(公告)日：1987-02-13
申请号：JP17112685
申请日：1985-08-05
申请人： NIPPON KOKAN KK
发明人： YAMAZAKI YOSHIMASA , KUWATA MASAYOSHI , KUBOYAMA KIYOSHI
IPC分类号： B21D1/05
摘要： PURPOSE:To stabilize a leveling shape of steel plate and of a roller leveler to minimize a warping by controlling and setting a devise for rolling reduction on a calculated rolling reduction based on steel plate specifications on a host computer and by correcting the rolling reduction by the detected warping value of a sent steel plate. CONSTITUTION:A shape controlling device 4 is operated on calculated rolling reduction according to the memorized specification of the steel plate, e.g. kinds of steel, plate thickness, plate with, tensile strength, etc., to set the positions of the devices 6, 7 for rolling reduction of the roller leveler 1. Then, the warping value at specific position of the steel plate 2 sent out from the roller leveler 1 is detected by a detecting device 3, and with its detected value, the rolling reduction including a warping by the own weight of steel plate is corrected by the shape controlling device 4. The corrected shape of the steel plate 2 is stabilized and the steel plate with slight warping is produced. Further, if the warping of the steel plate before entering the leveler 1 is previously detected by the detector 8 to add to the correction by the controlling device 4, the correction of steel plate is much more stabilized.

5. 发明专利

JPS6228604A NONCONTACT TYPE PROFILE MEASURING INSTRUMENT 失效
公开(公告)号：JPS6228604A
公开(公告)日：1987-02-06
申请号：JP16895085
申请日：1985-07-31
申请人： NIPPON KOKAN KK
发明人： KUBOYAMA KIYOSHI , TAKAKURA NOBUO , YAMAMOTO MASAHARU , KODOI AKIO , NAKAMURA TAKETO , MASUDA KENICHI
IPC分类号： G01B7/28 , G01B7/00
摘要： PURPOSE:To prevent the influence of a fine crack, etc., produced in the surface of an object to be measured, by constituting an eddy current detecting section in a double-coil structure and, at the same time, making the frequency of an exciting signal variable. CONSTITUTION:When AC signals of, for example,

6. 发明专利

JPS629709A DETECTING METHOD FOR CHATTERING IN COLD ROLLING MILL 失效
公开(公告)号：JPS629709A
公开(公告)日：1987-01-17
申请号：JP14682085
申请日：1985-07-05
申请人： NIPPON KOKAN KK
发明人： FUNATOKO ISOO , MITSUNARI MOTONOBU , KUBOYAMA KIYOSHI , INOUE YOSHITAKA
IPC分类号： B21B37/00 , B21B1/28 , B21B11/00 , B21B33/00 , B21B38/00 , B21C51/00
摘要： PURPOSE:To improve the detecting accuracy by passing signals from a vibratory speed sensor equipped on a housing of a cold rolling mill through a band-pass filter of a natural frequency of the rolling mill to detect a chattering by said output signal. CONSTITUTION:A vibratory speed sensor 2 of the horizontal direction is equipped on the housing of the rolling mill. Then, the vibratory wave from the vibration sensor 2 is amplified by an amplifier 3 and the amplified signals are passed through the band-pass filter 4 of the natural frequency of the mill. This is performed because the chattering is noticed to cause in the frequency band of natural vibration of the mill. The signal filtrated by the band-pass filter 4 is rectified by a rectifying circuit 5 and after smoothed by a smoothing circuit 6, fed to an arithmetic circuit 7, then the digitized chattering vibratory signal is collected with a previously set reference value and then an alarm or an automatic decelerating command is issued.

7. 发明专利

JPS625137A CONTACTLESS DIAGNOSIS FOR BEARING 失效
公开(公告)号：JPS625137A
公开(公告)日：1987-01-12
申请号：JP14418985
申请日：1985-07-01
申请人： NIPPON KOKAN KK
发明人： OKITSU HIROTO , KUBOYAMA KIYOSHI
IPC分类号： G01H17/00 , G01M13/04
摘要： PURPOSE:To discriminate the propriety of a bearing in a noncontact manner from the level variation cycle histogram of self-correlation function of an acoustic signal, by detecting a sound emitting from a bearing with a directive microphone to remove noises from a filter. CONSTITUTION:A sound alone emitting from an object bearing 1 is detected as much as possible and amplified 3 with an intense directive microphone 2 and after the removal of noises with a BPF4 sandwiching the natural frequency (normally, 1-5 kHz) of a bearing, a rectification 5 is done to obtain the waveform corresponding to the variation cycle of the abnormal vibration of the bearing. Peak is picked up 6 from the waveform and converted into digital from analog to prepare a histogram of the variation cycle or analyze the self- correlation by computation 8. Thus, the propriety of the bearing is judged from the presence of the specified cycle in the histogram or the degree of correlation. The affected part also can be identified from the specific frequency (1/period) by specifying the type and the number of revolutions of the bearing.

8. 发明专利

JPS6233014A CAMBER DETECTING METHOD FOR STEEL PLATE 失效
公开(公告)号：JPS6233014A
公开(公告)日：1987-02-13
申请号：JP17112585
申请日：1985-08-05
申请人： NIPPON KOKAN KK
发明人： YAMAZAKI YOSHIMASA , KUWATA MASAYOSHI , KUBOYAMA KIYOSHI
IPC分类号： B21D1/05
摘要： PURPOSE:To detect real cambers of a straightened steel plate by measuring a distance to a steel plate delivered from a roller leveler by a range finder and calculating a relation-ship between a distance taking into account of the dead weight shown in the specifications of the steel plate and a real camber quantity by a calibration unit. CONSTITUTION:A distance (l) to a delivered steel plate W is measured by a range finder 2 set at a prescribed distance X from the last roller 10 of a roller leveler 1. The material specifications such as the thickness, strength or base material quality, yield point, and heat treatment conditions and a dis tance L taking account of effect of the dead weight in a cantilever state of the steel plate W and data related to cambers of + or -h are stored in a calibration unit 3. therefore, a real camber quantity (h) of the plate W is detected based on the distance (l). The calibration unit 3 operates so that a shape controller 4 corrects an upper roller position of the roller leveler 1 to bring the distance (l) to be a distance (l0) by which a real camber is zero, to make the real cam ber quantity zero, and to improve and stabilize a shape quality of the plate W.

9. 发明专利

JPS625136A MONITORING DEVICE OF BEARING 失效
公开(公告)号：JPS625136A
公开(公告)日：1987-01-12
申请号：JP14418885
申请日：1985-07-01
申请人： NIPPON KOKAN KK
发明人： OKITSU HIROTO , KUBOYAMA KIYOSHI
IPC分类号： G01H17/00 , G01M13/04
摘要： PURPOSE:To obtain an inexpensive monitoring device enabling early detection of the quality of a bearing, by packing a condensor microphone, a signal processing circuit, a judging circuit and a battery in a cylindrical case. CONSTITUTION:A sound emitted from a bearing is detected by a condenser microphone 5 having excellent characteristics in a region of 1 kHz and above and being inexpensive. The detected sound is amplified 11, removed of noise by a filter 12 and then rectified 13, and thereby a peak value is detected 14. Then, whether a sound level is above a reference value of not is determined 20, and when it exceeds the reference value, an alarm lamp 7 is lighted. Since the period of a change in abnormal vibrations of the bearing is determined primarily from the type and the number of rotations of the bearing, the quality of the bearing is determined from the presence of a specified period in a histogram of the period of the change in the sound level or from the degree of autocorrelation thereof. In addition, a faulty portion can be found from a specific frequency (1/period) by specifying the type and the number of rotations of the bearing.

10. 发明专利

JPS61199505A DEVICE FOR DIAGNOSING DETERIORATION OF BEARING FOR ROLLING ROLL 失效
公开(公告)号：JPS61199505A
公开(公告)日：1986-09-04
申请号：JP3739985
申请日：1985-02-28
申请人： NIPPON KOKAN KK
发明人： HORIUCHI YUTAKA , KOGA YOICHI , KUBOYAMA KIYOSHI
IPC分类号： B21B31/07 , B21B33/00 , B21B38/00
摘要： PURPOSE:To perceive the deteriorating degree of a bearing and to maintain and increase the accuracy and a servise life of a rill by analyzing in on-line the speed of vibration and/or acceleration of vibration of a roll chock by a vibration sensor on the roll chock as well as analyzing them in off-line by fixing the roll chock. CONSTITUTION:The signals of vibration sensors 3a, 3b provided to the chocks 2a, 2b of a rolling roll 1 are amplified by the amplifying part 40 of a diag-nosing meter 4, and an acceleration of vibration for each frequency of said signals separated by a filtering part 41 is computed by a computing part 43, and is indicated by a meter 44 and recorded 45. The degree of damage of a roll 1 bearing part is perceived by these waveform and progress. Further, the bearing conditions at the time of off-line can also be analyzed by fixing the chocks 2a, 2b by clamps 5a-5d and rotating the roll 1. The accuracy of roll 1 is maintained and its service life is prolonged by perceiving the degree of deterioration of each roll bearing.

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