Vertical spindle duplex head for a grinder
    1.
    发明授权
    Vertical spindle duplex head for a grinder 失效
    用于研磨机的垂直主轴双面打印头

    公开(公告)号:US4590712A

    公开(公告)日:1986-05-27

    申请号:US785082

    申请日:1985-10-04

    CPC分类号: B24B7/162

    摘要: A vertical spindle duplex head for a grinder includes an annular pressure wheel and a receiver wheel arranged to rotate and revolve workpieces between the annular surfaces of the pressure wheel and the receiver wheel and a grindstone for one end portion of the workpieces driven in the opposite directions of rotation of the pressure wheel and receiver wheel and at their different rotational ratios. The workpieces rotate and revolve between these wheels, thereby grinding their end face by means of a grindstone arranged around the external periphery of a rotary carrier.The pressure wheel and receiver wheel are rotatably driven in opposite directions and at their different rotational speeds by distributing driving force from one source to each of them and a variable driving means is provided on one of the transmittance routes of the driving force extending from the place of distributing the driving force to both of the pressure wheel and the receiver wheel, whereby the rotational ratio of each of them can be optionally changed.

    摘要翻译: 用于研磨机的垂直主轴双面打印头包括环形压力轮和接收轮,其被布置成在压力轮和接收轮的环形表面之间旋转和旋转工件,以及用于沿相反方向驱动的工件的一个端部的磨石 的压力轮和接收轮的旋转并且以其不同的旋转比。 工件在这些车轮之间旋转并旋转,从而通过绕旋转载体的外周布置的磨石研磨它们的端面。 压力轮和接收轮通过将驱动力从一个源分配到它们中的每一个而以相反方向和不同的转速旋转地驱动,并且可变驱动装置设置在从该位置延伸的驱动力的透射路径之一 将驱动力分配到压力轮和接收轮两者,由此可以任意地改变它们中的每一个的旋转比。

    Device for checking a D.C. source voltage relative to a predetermined
value
    2.
    发明授权
    Device for checking a D.C. source voltage relative to a predetermined value 失效
    用于检查相对于预定值的直流电源电压的装置

    公开(公告)号:US3970933A

    公开(公告)日:1976-07-20

    申请号:US542542

    申请日:1975-01-20

    摘要: A device for testing the voltage of a voltage source comprises a bridge circuit, a differential switching circuit and an indicator element. The bridge circuit includes a first circuit comprising a first resistor; a second circuit comprising first diode means connected to the first circuit; a third circuit comprising a second resistor connected to the first circuit, the junction between the third and first circuits being connected to one terminal of the voltage source; and a fourth circuit comprising a serial connection of second diode means and a third resistor. One end of the fourth circuit is connected to the third circuit and the other end is connected to the second circuit. The junction between the fourth and second circuits is connected to the other terminal of the voltage source. The third resistor has a resistance value sufficiently great so that the differential voltage between the junction between the first and second circuits and the junction between the third and fourth circuits depends on the source voltage. The differential switching circuit is adapted to change its condition in accordance with the differential voltage between the junction between the first and second circuits and the junction between the third and fourth circuits. The switching circuit has a terminal for outputting the condition thereof. The indicator element is connected to the output terminal to indicate the condition of the differential switching circuit.

    摘要翻译: 用于测试电压源的电压的装置包括桥接电路,差分开关电路和指示器元件。 桥电路包括第一电路,其包括第一电阻器; 第二电路,包括连接到第一电路的第一二极管装置; 第三电路,包括连接到第一电路的第二电阻器,第三和第一电路之间的连接点连接到电压源的一个端子; 以及包括第二二极管装置和第三电阻器的串联连接的第四电路。 第四电路的一端连接到第三电路,另一端连接到第二电路。 第四和第二电路之间的连接点连接到电压源的另一个端子。 第三电阻器的电阻值足够大,使得第一和第二电路之间的接合点与第三和第四电路之间的接合点之间的差分电压取决于源极电压。 差分开关电路适于根据第一和第二电路之间的接合点与第三和第四电路之间的接合点之间的差分电压来改变其状态。 开关电路具有用于输出其状态的端子。 指示器元件连接到输出端子以指示差分开关电路的状态。

    Device for checking a d c source voltage relative to a predetermined
value
    3.
    发明授权
    Device for checking a d c source voltage relative to a predetermined value 失效
    用于检查相对于预定值的电源电压的装置

    公开(公告)号:US4044304A

    公开(公告)日:1977-08-23

    申请号:US657277

    申请日:1976-02-11

    摘要: A device for testing the voltage of a voltage source comprises a bridge circuit, a differential switching circuit and an indicator element. The bridge circuit includes a first circuit comprising a first resistor; a second circuit comprising first diode means connected to the first circuit; a third circuit comprising a second resistor connected to the first circuit, the junction between the third and first circuits being connected to one terminal of the voltage source; and a fourth circuit comprising a serial connection of second diode means and a third resistor. One end of the fourth circuit is connected to the third circuit and the other end is connected to the second circuit. The junction between the fourth and second circuits is connected to the other terminal of the voltage source. The third resistor has a resistance value sufficiently great so that the differential voltage between the junction between the first and second circuits and the junction between the third and fourth circuits depends on the source voltage. The differential switching circuit is adapted to change its condition in accordance with the differential voltage between the junction between the first and second circuits and the junction between the third and fourth circuits. The switching circuit has a terminal for outputting the condition thereof. The indicator element is connected to the output terminal to indicate the condition of the differential switching circuit.

    摘要翻译: 用于测试电压源的电压的装置包括桥接电路,差分开关电路和指示器元件。 桥电路包括第一电路,其包括第一电阻器; 第二电路,包括连接到第一电路的第一二极管装置; 第三电路,包括连接到第一电路的第二电阻器,第三和第一电路之间的连接点连接到电压源的一个端子; 以及包括第二二极管装置和第三电阻器的串联连接的第四电路。 第四电路的一端连接到第三电路,另一端连接到第二电路。 第四和第二电路之间的连接点连接到电压源的另一个端子。 第三电阻器的电阻值足够大,使得第一和第二电路之间的接合点与第三和第四电路之间的接合点之间的差分电压取决于源极电压。 差分开关电路适于根据第一和第二电路之间的接合点与第三和第四电路之间的接合点之间的差分电压来改变其状态。 开关电路具有用于输出其状态的端子。 指示器元件连接到输出端子以指示差分开关电路的状态。