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    • 21. 发明授权
    • Method of machining a female screw and dressing a grinding wheel for female screw machining
    • 加工内螺纹和修整内螺纹加工砂轮的方法
    • US06687566B2
    • 2004-02-03
    • US10132035
    • 2002-04-25
    • Takashi NishimotoFumitoshi Terasaki
    • Takashi NishimotoFumitoshi Terasaki
    • G06F1900
    • G05B19/186B23G1/38B24B53/085Y10T409/300112
    • The present invention provides a method of machining a female screw groove in a workpiece whereby the spindle of an internal grinding wheel for machining the workpiece into a female screw is tilted relative to the screw's axis at an angle (&xgr;) smaller than the lead angle (&agr;) of the female screw. First, specifications of the female screw, data on the configuration of the thread groove, and the tilt angle are supplied to a program for calculating data on dressing of the grinding wheel wherein the locus of the groove on cross-sections normal to the axis of the grinding wheel and wheel dressing data are calculated. Second, the grinding wheel on the aforementioned spindle is shaped or dressed by simultaneous triaxial control of the rotation of the single point dresser about a b-axis, and the feed of the grinding wheel table along a z-axis and a cross slide along an x-axis based on the foregoing data. Thereupon, the female screw is machined with the dressed grinding wheel.
    • 本发明提供了一种加工工件中的内螺纹槽的方法,由此用于将工件加工成内螺纹的内砂轮的主轴相对于螺杆的轴线以比引导角小(xi)倾斜( α)。 首先,将内螺纹的规格,螺纹槽的构造的数据和倾斜角提供给用于计算砂轮的修整数据的程序,其中,在垂直于轴的轴线的横截面上的槽的轨迹 计算砂轮和砂轮修整数据。 第二,上述主轴上的砂轮通过同时三轴控制单点修整器围绕b轴的旋转而被成形或修整,并且砂轮台沿z轴和十字滑块沿着 基于上述数据的x轴。 于是,内螺纹用磨光砂轮加工。
    • 22. 发明授权
    • Shaft sealing means for high pressure fluid
    • 用于高压流体的轴封装置
    • US4169605A
    • 1979-10-02
    • US855227
    • 1977-11-28
    • Takashi NishimotoSeiichi SuzukiHiroyoshi Takamori
    • Takashi NishimotoSeiichi SuzukiHiroyoshi Takamori
    • F16J15/32F03C1/00F04B53/00F16J15/16F16J15/34
    • F16J15/3448F16J15/166
    • A shaft sealing means for use in a hydraulic pump/motor having a rotary shaft rotating within its body, an oil seal fitted in the gap between the rotary shaft and the body for sealing therebetween and between the high and low pressure sides, and a spacer fixed in the gap. The shaft sealing means comprises anti-protrusion means fitted relatively tightly in the gap with its high pressure side surface in close contact with the low pressure side surface of the oil seal for preventing protrusion of the oil seal toward the low pressure side, and anti-friction means inserted in the gap between the anti-protrusion means and the spacer for providing a sliding motion between the anti-protrusion means and the spacer thereby reducing the generation of frictional forces therebetween. This construction eliminates the possibility of damaging the oil seal thereby preventing oil leakage and also resulting in an improved shaft sealing means for use in a high pressure and/or high speed hydraulic pump/motor having a long service life.
    • 一种用于具有在其主体内旋转的旋转轴的液压泵/马达的轴密封装置,安装在旋转轴和主体之间的间隙中并用于密封其间以及高压侧和低压侧之间的间隙的油封,以及间隔件 固定在差距。 所述轴封装置包括与所述油压密封件的低压侧表面紧密接触的与其高压侧表面相对紧密地装配在间隙中的防突出装置,用于防止油封向低压侧突出, 摩擦装置插入在防突出装置和间隔件之间的间隙中,用于在防突出装置和间隔件之间提供滑动运动,从而减少它们之间的摩擦力的产生。 这种结构消除了损坏油封从而防止漏油的可能性,并且还导致用于具有长使用寿命的高压和/或高速液压泵/电动机的改进的轴密封装置。
    • 23. 发明授权
    • Tailstock control device
    • 尾座控制装置
    • US08156850B2
    • 2012-04-17
    • US12363274
    • 2009-01-30
    • Yoshiichi IchikawaTakashi NishimotoKazuhisa Niwa
    • Yoshiichi IchikawaTakashi NishimotoKazuhisa Niwa
    • B23B23/00B23B3/00
    • B23B23/00B23Q15/08B23Q17/005G05B2219/41251G05B2219/42289Y10T82/2502Y10T82/2564
    • A tailstock control device supports an object to be machined by driving and controlling a servo motor which drives a driving system of a tailstock having a spring member in forward and backward directions, to cause a tailstock center connected to the tailstock to contact a center hole of the object to be machined. The tailstock control device comprises a limit torque value calculating unit which calculates, as a limit torque value (Tm), a drive torque value of the servo motor necessary for supporting the object to be machined, and a servo control unit which drives and controls the servo motor to attempt to move the tailstock at a tailstock movement velocity (Vs) which is set in advance, until an output torque value (Tr) of the servo motor reaches the limit torque value (Tm). The limit torque value (Tm) is calculated by subtracting, from the support thrust (Fa) necessary for supporting the object to be machined, an excessive thrust Fs which is calculated based on the tailstock movement velocity (Vs).
    • 尾架控制装置通过驱动和控制伺服电动机来支撑待加工物体,所述伺服电动机沿前后方向驱动具有弹簧构件的尾座的驱动系统,以使尾座中心连接到尾架以接触尾座的中心孔 要加工的物体。 尾架控制装置包括极限转矩值计算单元,其计算用于支撑待加工物体所需的伺服电动机的驱动转矩值作为极限转矩值(Tm),以及伺服控制单元,其驱动和控制 伺服马达试图以预先设定的尾座移动速度(Vs)移动尾架,直到伺服电动机的输出转矩值(Tr)达到极限转矩值(Tm)为止。 通过从支撑待加工物体所需的支撑推力(Fa)减去基于尾座移动速度(Vs)计算出的过大的推力Fs来计算极限转矩值(Tm)。