CASTING PROCESS, UPPER MOLD ASSEMBLY AND METHOD OF SECURING CORE TO UPPER MOLD
    1.
    发明申请
    CASTING PROCESS, UPPER MOLD ASSEMBLY AND METHOD OF SECURING CORE TO UPPER MOLD 审中-公开
    铸造工艺,上模组件以及将其加工成上模的方法

    公开(公告)号:US20100018664A1

    公开(公告)日:2010-01-28

    申请号:US12516092

    申请日:2007-09-27

    IPC分类号: B22D46/00 B22D33/04

    CPC分类号: B22D18/02 B22C9/108 B22C21/14

    摘要: Disclosed is a casting process with use of a lower mold 10 having a hollow corresponding to a partial profile of a casting, and an upper mold 22 supporting a core 24 and defining a mold cavity 12 in cooperation with the lower mold. The process includes: pouring a necessary minimum amount of a molten metal for obtaining a casting into the hollow; moving downwardly the upper mold at a predetermined first speed to a predetermined height level; further moving downwardly the upper mold assembly, from the predetermined height level, at a predetermined second speed by changing the descending speed of the upper mold; detecting a status information of the upper mold in a state when the upper mold is superimposed on the lower mold; and stopping the descending movement of the upper mold after detecting that the status information comes at a predetermined state.

    摘要翻译: 公开了一种使用具有对应于铸件的局部轮廓的中空的下模10的铸造工艺,以及支撑芯24并与下模配合地限定模腔12的上模22。 该方法包括:将必要的最少量的熔融金属浇注到中空部中以获得铸件; 以预定的第一速度将上模向下移动到预定的高度水平; 通过改变上模的下降速度,以预定的第二速度进一步向上移动上模具组件,从预定的高度水平; 在上模重叠在下模上的状态下,检测上模的状态信息; 并且在检测到状态信息进入预定状态之后停止上模的下降运动。

    Write data write-pre-compensation system in a floppy disk drive unit and
apparatus therefor
    2.
    发明授权
    Write data write-pre-compensation system in a floppy disk drive unit and apparatus therefor 失效
    将数据写入预补偿系统写入软盘驱动器单元及其设备中

    公开(公告)号:US5187614A

    公开(公告)日:1993-02-16

    申请号:US631678

    申请日:1990-12-20

    摘要: A write data compensation system compensates original write data which is recorded on recording disc mediums, the original write data to eventually be reproduced using a disc drive apparatus capable of reproducing data from recording media having differing recording densities. In the event that the write data is to be recorded on a low density recording media, the original write data is corrected by displacing each bit for which a bit shift is estimated to occur during reproduction in a direction coincident with a direction of the estimated bit shift. In the event that the write data is to be recorded on a higher density recording media, the original write data is corrected by displacing each bit for which a bit shift is estimated to occur in a direction opposing the direction of the estimated bit shift.

    摘要翻译: 写入数据补偿系统补偿记录在光盘介质上的原始写入数据,使用能够从具有不同记录密度的记录介质再现数据的盘驱动装置最终再现原始写入数据。 在写入数据要被记录在低密度记录介质上的情况下,通过移位在再现期间估计出的位偏移在与估计位的方向一致的方向上的每个比特来校正原始写入数据 转移。 在写入数据要被记录在较高密度的记录介质上的情况下,原始写入数据通过移位在与估计位移的方向相反的方向上发生位移的每个比特来校正。

    Regeneration system for digital magnetic recording information
    4.
    发明授权
    Regeneration system for digital magnetic recording information 失效
    数字磁记录信息再生系统

    公开(公告)号:US4972276A

    公开(公告)日:1990-11-20

    申请号:US431038

    申请日:1989-11-03

    IPC分类号: G11B20/10

    CPC分类号: G11B20/10009

    摘要: An apparatus is provided for reproducing information recorded on a magnetic recording media. The recorded information is detected and amplified by a magnetic head device and a corresponding amplified detection signal is output therefrom. The amplified detection signal is input to a differentiator and to a non-ideal integrator. The outputs of the differentiator and the non-ideal integrator are subtracted from each other and the thus subtracted signal is applied to a zero crossing point detector. Pulses are generated representing the recorded information at each zero crossing point deteted by the zero crossing point detector. Since the non-ideal integrator does not effect integration of DC and low frequency signals, a compensating device is provided for generating a corresponding DC and low frequency signal and for adding this signal to the output signal of the non-ideal integrator.

    摘要翻译: 提供一种用于再现记录在磁记录介质上的信息的装置。 记录的信息由磁头装置检测和放大,并从其输出相应的放大检测信号。 放大的检测信号被输入到微分器和非理想积分器。 微分器和非理想积分器的输出彼此相减,并将这样减去的信号施加到过零点检测器。 产生表示由过零点检测器检测的每个过零点处的记录信息的脉冲。 由于非理想积分器不影响直流和低频信号的集成,所以提供补偿装置用于产生相应的直流和低频信号,并将该信号加到非理想积分器的输出信号上。

    Method of and device for producing mold core
    5.
    发明授权
    Method of and device for producing mold core 失效
    模芯生产方法及设备

    公开(公告)号:US4781236A

    公开(公告)日:1988-11-01

    申请号:US066362

    申请日:1987-06-25

    IPC分类号: B22C13/12 B22C15/28

    CPC分类号: B22C15/28 B22C13/12

    摘要: A method of producing a mold core from green sand, wherein green sand is blown into a mold cavity which is sized to be greater than the size of the mold core to be obtained, so that a preformed mold body is prepared. The preformed mold body is then compacted by a compacting die having a cavity recess which is sized in conformity with the size of the mold core to be obtained, until the preformed mold body size is reduced to the final stage. In consequence, the green sand is compacted to develop uniform distributions of strength and hardness over the entire portion of the mold core as the product.

    摘要翻译: 一种从绿砂生产模芯的方法,其中将生砂吹入模腔中,其尺寸设定为大于待获得的模芯的尺寸,从而制备预成型的模具体。 然后将预成型的模具体通过具有空腔凹槽的压实模具压实,所述模具凹口的尺寸与要获得的模芯的尺寸相一致,直到预成形的模体尺寸减小到最后阶段。 因此,生砂被压实以在作为产品的模芯的整个部分上产生均匀的强度和硬度分布。

    Device for clamping a flexible disk
    6.
    发明授权
    Device for clamping a flexible disk 失效
    用于夹紧软盘的装置

    公开(公告)号:US4705279A

    公开(公告)日:1987-11-10

    申请号:US878431

    申请日:1986-06-25

    IPC分类号: G11B17/028 G11B25/04

    摘要: A collet device for engagement with a spindle hub for clamping a flexible disk between the collet device and the hub, the collet device having a collet having a plurality of radially extending petal-like portions therearound, a collet shaft on which the collet is mounted, a regulating body on the collet and having stops thereon extending outside the ends of the petal-like portions and engagable by the ends of the petal-like portions for limiting the outward movement of the petal-like portions during an increase in the diameter of the collet, and an enlarging spring on the regulating body have legs thereon engaging the ends of the petal-like portions for urging the ends of the petal-like portions outwardly for increasing the diameter of the collet.

    摘要翻译: 一种夹头装置,用于与主轴毂接合,用于在夹头装置和轮毂之间夹紧柔性盘,所述夹头装置具有夹头,所述夹头具有在其周围的多个径向延伸的花瓣状部分,夹头轴安装在所述夹头上, 夹头上的调节体,并且在其上延伸延伸到花瓣状部分的端部的外侧并且由花瓣状部分的端部接合,以限制花瓣状部分的向外移动, 夹头和调节体上的放大弹簧,其上具有与花瓣状部分的端部接合的腿,用于向外推动花瓣状部分的端部以增加夹头的直径。