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    • 4. 发明授权
    • Cemented carbide end mill
    • 硬质合金立铣刀
    • US06719501B2
    • 2004-04-13
    • US09976272
    • 2001-10-15
    • Toru SekiguchiYuu KagiyaYasushi Goshima
    • Toru SekiguchiYuu KagiyaYasushi Goshima
    • B23B2714
    • C23C30/005B23C5/10B23C2210/202B23C2210/203B23C2224/36B23C2226/18B23C2228/10Y10T407/1966Y10T407/27
    • A cemented carbide end mill has three or more cutting edges formed on its periphery and flutes each provided between adjacent cutting edges. The land width of each cutting edge and the flute width has a ratio of 1:1.5 to 1:4. Each flute has a helix angle of 35°-60° and, when viewed in a cross section perpendicular to the end mill axis, is in a shape smoothly concave radially inwardly. The core of the end mill has a diameter which is 62%-68% of the outer diameter of the end mill. The cutting edges have a base material of ultra-fine cemented carbide and are coated with a titanium-aluminum nitride hard film. The end mill is good at chip discharging in groove cutting and provides less inclination of cut grooves and less corner wear of the end mill.
    • 硬质合金立铣刀具有在其周边上形成的三个或更多个切削刃和各自设置在相邻切削刃之间的槽纹。 每个切削刃的刃宽和槽宽的比例为1:1.5至1:4。 每个槽具有35°-60°的螺旋角,并且当在垂直于端铣刀轴线的横截面中观察时,其形状呈径向向内平滑地凹陷。 立铣刀的芯部的直径为端铣刀的外径的62%-68%。 切削刃具有超细硬质合金的基材,并涂覆有钛 - 氮化铝硬质膜。 端铣刀在槽切削中具有良好的切屑排放,并且提供切割槽的较小倾斜度和较少的端铣刀的角磨损。
    • 6. 发明授权
    • Laser beam control circuit for optical recording/reproducing apparatus
    • 用于光学记录/再现装置的激光束控制电路
    • US5040163A
    • 1991-08-13
    • US472856
    • 1990-01-31
    • Yoshihiro SasakiToru Sekiguchi
    • Yoshihiro SasakiToru Sekiguchi
    • G11B7/125G11B11/105H01S5/042
    • G11B7/126G11B11/10541
    • A laser beam control circuit for an optical recording/reproducing apparatus, which controls the intensity of a laser beam striking a magneto-optical disc. The control circuit controls the injection current to a laser diode to provide high intensity for recording and low intensity for reproducing, providing a smooth transition between the high and low intensity states, and avoiding any excessive transition current. The control circuit monitors the output power of the laser diode and maintains it at a first value in the reproducing mode and a second value in the recording mode, and further controls the output power so that even during switching, the output power does not exceed the second level. This is done by supplying a compensating reference voltage to the recording power control loop during the reproducing mode, so that the output of the recording error amplifier does not change abruptly when the operating mode is switched to the recording mode.
    • 一种用于光学记录/再现装置的激光束控制电路,其控制激光束撞击磁光盘的强度。 控制电路控制到激光二极管的注入电流以提供高强度的记录和低强度的再现,提供高强度状态和低强度状态之间的平滑过渡,并避免任何过度的过渡电流。 控制电路监视激光二极管的输出功率,并将其保持在再现模式下的第一值,并在记录模式下保持第二值,并进一步控制输出功率,使得即使在切换期间,输出功率也不会超过 二级 这通过在再现模式期间向记录功率控制环路提供补偿参考电压来完成,使得当操作模式切换到记录模式时,记录误差放大器的输出不会突然改变。
    • 8. 发明授权
    • Scan tracking apparatus for helical scan video tape recorder
    • 用于螺旋扫描录像机的扫描跟踪装置
    • US4520410A
    • 1985-05-28
    • US470667
    • 1983-02-28
    • Toru SekiguchiIsao Sanguu
    • Toru SekiguchiIsao Sanguu
    • H04N5/783G05D3/12G11B5/584G11B5/588H04N5/7826G11B5/58
    • G11B5/584G11B5/588
    • A scan tracking apparatus for a helical scan tape recorder, comprising a movable tape head (11), a detector (13) detecting the envelope of the tape signal to produce a reproduced signal, sampling means (15) for sampling the reproduced signal at fixed points of the helical scan, memory (17) for storing the reproduced signal and correction signals from different tracks of the helical scan, computation means (2) for computing a correction signal to return the tape head to the center of the track, a sawtooth generator (2, 4) for producing a signal related to the tape speed (v), and a head driving mechanism (9) for moving the tape head in response to the sawtooth and correction signals.
    • 一种用于螺旋扫描磁带录像机的扫描跟踪装置,包括可移动磁带头(11),检测磁带信号的包络以产生再现信号的检测器(13),用于对固定的再现信号进行采样的采样装置(15) 螺旋扫描的点,用于存储重放信号的存储器(17)和来自螺旋扫描的不同轨道的校正信号;计算装置(2),用于计算校正信号以将磁带头返回到轨道的中心;锯齿 用于产生与磁带速度(v)相关的信号的发生器(2,4)以及用于响应锯齿和校正信号移动磁带头的磁头驱动机构(9)。
    • 10. 发明授权
    • Spring connector
    • 弹簧连接器
    • US07021976B2
    • 2006-04-04
    • US11092724
    • 2005-03-30
    • Toru Sekiguchi
    • Toru Sekiguchi
    • H01R13/24
    • H01R13/2421
    • A spring connector comprises a supporting member, a cylindrical plunger, and a coil spring provided in the cylindrical plunger. The supporting member has a base, a pillar extended from the base, and a shoulder and a head having a diameter larger than that of the pillar. The upper end of the head has an inclined surface. The plunger has a closed upper end, an opening formed in an annular bent portion of a lower end thereof. An annular edge of the opening is slidably engaged with the supporting member at the shoulder thereof. The coil spring is provided between the closed upper end and the inclined surface of the head so that a shoulder formed on the head at a lower annular periphery is pressed against the annular bent portion of the opening.
    • 弹簧连接器包括支撑构件,圆柱形柱塞和设置在圆柱形柱塞中的螺旋弹簧。 支撑构件具有基部,从基部延伸的柱,以及具有比柱的直径大的直径的肩部和头部。 头部的上端具有倾斜表面。 柱塞具有闭合的上端,形成在其下端的环形弯曲部分中的开口。 开口的环形边缘在其肩部处与支撑构件可滑动地接合。 螺旋弹簧设置在封闭的上端和头部的倾斜表面之间,使得在下部环形周边处形成在头部上的肩部被压靠在开口的环形弯曲部分上。