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    • 1. 发明授权
    • Hydraulic dynamic bearing and spindle motor and rotary assembly provided
    • 提供液压动力轴承和主轴电机和旋转组件
    • US06371650B1
    • 2002-04-16
    • US09414244
    • 1999-10-07
    • Hiromitsu GotoIsamu TakeharaYukihiro NakayamaRyouji YoneyamaTakafumi SuzukiToshiharu KogureTadao IwakiNaoki KawawadaAtsushi OtaKoji Nitadori
    • Hiromitsu GotoIsamu TakeharaYukihiro NakayamaRyouji YoneyamaTakafumi SuzukiToshiharu KogureTadao IwakiNaoki KawawadaAtsushi OtaKoji Nitadori
    • F16C3206
    • F16C33/74F16C17/107F16C33/103F16C33/107F16C2370/12G11B19/2009
    • A double sleeve type dynamic bearing comprises a fixed shaft having at least one end fixedly mountable to an apparatus in which the bearing is utilized, a rotary sleeve arranged coaxially with the fixed shaft so that a first fine gap is formed therebetween, a fixed sleeve arranged coaxially with the rotary sleeve so that a second fine gap is formed therebetween, and a lubrication oil filled in the fine gaps. The first fine gap and the second fine gap each have an open end exposed to air outside the bearing and an opposite end that is not exposed to the air, the opposite ends being in communication with each other. A holding member holds the fixed shaft and the fixed sleeve and is disposed adjacent to a lower end surface of the rotary sleeve to form a third fine gap between the holding member and the lower end surface of the rotary sleeve. The third fine gap is formed with a thrust dynamic pressure producing groove, and opposite ends of the first and second fine gaps meet each other through the third fine gap. A peripheral surface of at least one of the fixed shaft, the rotary sleeve and the fixed sleeve forming at least one of the first and second fine gaps has a dynamic pressure producing groove formed therein.
    • 一种双套筒式动态轴承,包括固定轴,该固定轴具有固定地安装到使用轴承的装置的至少一个端部,与固定轴同轴设置的旋转套筒,使得在其间形成有第一细小间隙,固定套筒布置 与旋转套筒同轴,从而在它们之间形成第二细微间隙,并且填充有细小间隙的润滑油。 第一细间隙和第二细间隙各自具有暴露于轴承外部的空气的开口端和不暴露于空气的相对端,相对端彼此连通。 保持构件保持固定轴和固定套筒并且邻近旋转套筒的下端表面设置,以在保持构件和旋转套筒的下端表面之间形成第三细微间隙。 第三细间隙由推力动压产生槽形成,第一和第二细缝的相对端通过第三细间隙相互相交。 固定轴,旋转套筒和形成第一和第二细小间隙中的至少一个的固定套筒中的至少一个的周面具有形成在其中的动压产生槽。
    • 4. 发明授权
    • Damper device for a motor
    • 电机减震装置
    • US5191811A
    • 1993-03-09
    • US771305
    • 1991-10-02
    • Toshiharu Kogure
    • Toshiharu Kogure
    • F16D37/02F16F9/52F16F15/167
    • F16F9/52F16D37/02F16F15/167F16D2037/002Y10S277/916Y10T464/50
    • A damper device for a motor having a boss section attached to a rotary shaft of the motor, a mass inertia section rotatably supported by the boss section such that it surrounds the outer periphery of the boss section with a gap left therebetween, a magnetic fluid filling up the gap, and magnets provided in either the boss section or the mass inertia section for preventing leakage of the magnetic fluid. Furthermore, the boss section and the mass section facing each other through the gap are made of materials differing in the coefficient of thermal expansion, even if the magnetic fluid is heated by heating of the motor, an external temperature variation and the like so that its viscosity is decreased, such a decrease in viscosity can be canceled out by a change in gap dimension caused by the difference in expansion between the boss section material and the mass section material differing in the coefficient of thermal expansion. Therefore, the damping effect is kept constant without being influenced by thermal fluctuations.
    • 一种用于电动机的阻尼器装置,具有安装在电机的旋转轴上的凸台部分,质量惯性部分由凸台部分可旋转地支撑,使得它围绕凸台部分的外周围留有间隙,磁性流体填充 设置在凸台部或质量惯性部中的磁铁,以防止磁性流体的泄漏。 此外,即使通过电动机的加热来加热磁性流体,外部温度变化等,通过间隙也相互面对的凸台部分和质量部分由热膨胀系数不同的材料制成,使得其 粘度降低时,由于凸起部分材料与热膨胀系数不同的质量部分材料之间的膨胀差引起的间隙尺寸变化,可以抵消粘度的降低。 因此,阻尼效应保持恒定,不受热波动的影响。
    • 5. 发明授权
    • Damper device for a motor
    • 电机减震装置
    • US5081882A
    • 1992-01-21
    • US569374
    • 1990-08-13
    • Toshiharu Kogure
    • Toshiharu Kogure
    • F16D37/02F16F9/52F16F15/167
    • F16D37/02F16F15/167F16F9/52F16D2037/002F16D2037/005
    • A damper device for a motor having a boss section attached to a rotary shaft of the motor, a mass inertia section rotatably supported by the boss section such that it surrounds the outer periphery of the boss section with a gap left therebetween, a magnetic fluid filling up the gap, and magnets provided in either the boss section or the mass inertia section for preventing leakage of the magnetic fluid. Furthermore, the boss section and the mass section facing each other through the gap are made of materials differing in the coefficient of thermal expansion, even if the magnetic fluid is heated by heating of the motor, an external temperature variation and the like so that its viscosity is decreased, such a decrease in viscosity can be canceled out by a change in gap dimension caused by the difference in expansion between the boss section material and the mass section material differing in the coefficient of thermal expansion. Therefore, the damping effect is kept constant without being influenced by thermal fluctuations.
    • 一种用于电动机的阻尼器装置,具有安装在电机的旋转轴上的凸台部分,质量惯性部分由凸台部分可旋转地支撑,使得它围绕凸台部分的外周围留有间隙,磁性流体填充 设置在凸台部或质量惯性部中的磁铁,以防止磁性流体的泄漏。 此外,即使通过电动机的加热来加热磁性流体,外部温度变化等,通过间隙也相互面对的凸台部分和质量部分由热膨胀系数不同的材料制成,使得其 粘度降低时,由于凸起部分材料与热膨胀系数不同的质量部分材料之间的膨胀差引起的间隙尺寸变化,可以抵消粘度的降低。 因此,阻尼效应保持恒定,不受热波动的影响。
    • 6. 发明授权
    • Positive and negative rotation gas dynamic pressure bearing, spindle motor having dynamic pressure bearing, and rotator device having spindle motor as driving source
    • 正负旋转气动动压轴承,具有动压轴承的主轴电机和具有主轴电动机作为驱动源的转子装置
    • US06175547B1
    • 2001-01-16
    • US09162254
    • 1998-09-28
    • Toshiharu Kogure
    • Toshiharu Kogure
    • G11B2500
    • H02K7/086G11B25/043G11B33/14H02K7/085Y10T137/0971
    • A positive and negative rotation gas dynamic pressure bearing comprises a stationary bearing member, a movable bearing member mounted for rotation relative to the stationary bearing member, dynamic pressure generating grooves having first and second ends and formed in one of confronting surfaces of the stationary bearing member and the movable bearing member, a self-switch valve connected to the movable bearing member for rotation therewith, and conducting holes having first and second ends and formed in the movable bearing member. During rotation of the movable bearing member in a first direction of rotation, a high dynamic pressure is generated at central portions of the dynamic pressure generating grooves, and a valve body of the self-switch valve moves toward a lower space of a valve case of the self-switch valve to close the second ends of the conducting holes. During rotation of the movable member in a second direction of rotation opposite the first direction of rotation, a high dynamic pressure is generated at the first and second ends of the dynamic pressure generating grooves so that the valve body moves toward an upper space of the valve case to close a through-bore of the valve case and to open the second ends of the conducting holes to allow air taken in by air taking holes of the self-switch valve to be supplied to the central portions of the dynamic pressure generating grooves through the conducting holes.
    • 正向和反向旋转气体动压轴承包括固定轴承构件,安装成相对于静止轴承构件旋转的活动轴承构件,具有第一和第二端并形成在静止轴承构件的相对表面之一中的动压产生槽 和可移动轴承部件,连接到可移动轴承部件上以与其一起旋转的自切换阀,以及具有第一和第二端并形成在可动轴承部件中的导电孔。 在可移动轴承构件沿第一旋转方向旋转期间,在动压产生槽的中心部分处产生高动态压力,并且自动切换阀的阀体向阀壳体的下部空间移动 自动切换阀关闭导电孔的第二端。 在可动件沿与第一旋转方向相反的第二旋转方向旋转期间,在动压产生槽的第一端和第二端处产生高动态压力,使阀体向阀的上部空间移动 关闭阀壳的通孔并打开导电孔的第二端,以允许通过自开关阀的空气吸入空气的空气被供应到动压发生槽的中心部分,通过 导电孔。
    • 7. 发明授权
    • Magnetic bearing device
    • 磁轴承装置
    • US5760510A
    • 1998-06-02
    • US500539
    • 1995-07-11
    • Shinichi NomuraToshiharu Kogure
    • Shinichi NomuraToshiharu Kogure
    • F16C32/04F16C39/06H02K7/09
    • F16C32/0455
    • A magnetic bearing device comprises a rotor, electromagnets, radial direction displacement sensors, and a control circuit for controlling an exciting current of the electromagnets in accordance with a signal from the radial direction displacement sensors to magnetically levitate the rotor. The control circuit comprises a position detecting circuit, a calculator, a PID operating part, a phase inverter and power amplifiers. A CPU analyzes the displacement of the rotor at the time of rotation on the basis of a sensor signal issued from the position detecting circuit to supply a correction signal obtained as a result of analysis to the calculator. A magnetic force is thus generated which offsets the oscillation of the rotor for each of the frequency components and is supplied to the electromagnets. The magnetic bearing device is capable of inhibiting displacement components of the rotor other than a first order component in the rotation frequency of the rotor.
    • 磁性轴承装置包括转子,电磁体,径向位移传感器和用于根据来自径向位移传感器的信号控制电磁体的励磁电流的磁控浮动磁控浮动的控制电路。 控制电路包括位置检测电路,计算器,PID操作部分,相位逆变器和功率放大器。 CPU根据从位置检测电路发出的传感器信号分析旋转时的转子的位移,以向计算器提供作为分析结果而获得的校正信号。 因此产生磁力,其抵消每个频率分量的转子的振荡,并将其提供给电磁体。 磁性轴承装置能够抑制转子的位移分量,而不是转子旋转频率中的一阶分量。
    • 8. 发明授权
    • Grinding machine control system for intermittently measuring workpiece
size
    • 磨床控制系统用于间歇测量工件尺寸
    • US4505074A
    • 1985-03-19
    • US379153
    • 1982-05-17
    • Toshiharu Kogure
    • Toshiharu Kogure
    • B24B5/10B23Q15/02B24B47/20B24B49/02B24B49/04
    • B23Q15/02B24B49/04
    • A grinding machine control system has a position detecting device for generating a position signal indicative of the position of a cutting table which is driven at a variable speed by a cutting motor during a grinding process, and a size measuring device for intermittently measuring the workpiece size. A grinding stone table is reciprocally movable relative to the cutting table and carries a grinding stone for grinding the workpiece. A cutting table position signal and a cutting speed signal are intermittently measured under the control of a timing signal which is synchronized with the period of reciprocation of the grinding stone table during the grinding process and are temporarily held as sampling signals. A transient cutting residual amount signal g.sub.0 is obtained by subtracting the workpiece size signal from the sampled cutting table position signal, an error cutting residual amount signal g.sub.3 is obtained by subtracting the standard cutting residual amount signal g.sub.1 from the transient cutting residual amount signal g.sub.0, and a speed correction signal Vg.sub.3 is obtained by dividing the error cutting residual amount g.sub.3 by the sampling time interval "T". The speed correction signal Vg.sub.3 is added to a sampled cutting speed signal V, and a composite signal composed of the speed correction signal Vg.sub.3 and the cutting speed V is applied to control the cutting speed of the cutting motor until the next sampling time.
    • 研磨机控制系统具有位置检测装置,用于产生表示在研磨过程中由切割电机以可变速度驱动的切割台的位置的位置信号,以及用于间歇地测量工件尺寸的尺寸测量装置 。 磨石台相对于切割台往复运动,并携带用于研磨工件的磨石。 在与研磨过程中的磨石台的往复运动周期同步的定时信号的控制下间歇地测量切割台位置信号和切割速度信号,并将其暂时保持为采样信号。 通过从采样的切割表位置信号中减去工件尺寸信号获得瞬时切割剩余量信号g0,通过从瞬态切割剩余量信号g0中减去标准切割剩余量信号g1获得错误切除剩余量信号g3, 并且通过将误差切除残余量g3除以采样时间间隔“T”获得速度校正信号Vg3。 将速度校正信号Vg3与采样切割速度信号V相加,并且施加由速度校正信号Vg3和切割速度V组成的复合信号,以控制切割电机的切割速度,直到下一个采样时间为止。