Method and apparatus for finishing cut surface of work produced by wire
cut discharge process
    3.
    发明授权
    Method and apparatus for finishing cut surface of work produced by wire cut discharge process 失效
    通过线切割放电工艺生产的切割工作表面的方法和装置

    公开(公告)号:US4826580A

    公开(公告)日:1989-05-02

    申请号:US13811

    申请日:1987-02-12

    CPC分类号: C25F3/16 B23H7/02 Y10S204/09

    摘要: A method and a device for finishing the cut surface of a work which is cut from a metal blank by a wire cut discharge process. The work and the waste piece of the metal blank are positioned in the same condition as just after the process. Electrolyte is fed through a clearance between the work and the waste piece and, at the same time, current is caused to flow from the work to the remainder. This subjects the cut surface of the work to electrolytic treatment to thereby make it smooth while removing oxide films and degenerated surface layers therefrom.

    摘要翻译: 一种通过线切割放电处理从金属坯料切割的工件的切割表面的方法和装置。 金属坯料的工件和废件位于与刚刚过程相同的状态。 电解液通过工件和废件之间的间隙进给,同时电流从工件流到剩余部分。 这使得工件的切割表面进行电解处理,从而使其平滑,同时从其中去除氧化膜和退化的表面层。

    Electrostatic microactuators, active three-dimensional microcatheters using same and method for making same
    4.
    发明授权
    Electrostatic microactuators, active three-dimensional microcatheters using same and method for making same 失效
    静电微致动器,使用相同的活性三维微导管及其制造方法

    公开(公告)号:US06461337B1

    公开(公告)日:2002-10-08

    申请号:US09555892

    申请日:2000-07-28

    IPC分类号: A61M2500

    摘要: An electrostatic microactuator, known as a “Scratch Drive Actuator” or SDA, is based on a collective set of distributed elementary SDAs of small size that are associated with one another and that integrates a large number so as to allow the addition of the forces generated by each of the SDAs in the collective set. An external mechanical prestress, formed by a homogeneous external pressure in the form of a bias voltage applied at rest to the associated SDAs, is applied to the SDAs to allow a superposition of the forces generated by the associated SDAs. This is done while communicating to an external load the entire driving force emanating from the collective behavior of the SDAs. The electrostatic attraction forces established by the bias voltage are used to calibrate an individualized prestress for each actuator involved in the collective set. Such an electrostatic microactuator forms part of an active three-dimensional microcatheter, as one possible application, that can be used in a blood vessel.

    摘要翻译: 被称为“刮擦驱动致动器”或SDA的静电微致动器基于彼此相关联并且大量集成以便产生的力的小尺寸的分布式基本SDA的集合集合 由集体中的每个SDA组成。 通过以静态施加于相关联的SDA的偏置电压的均匀外部压力形成的外部机械预应力施加到SDA以允许由相关联的SDA产生的力的叠加。 这是在与外部负载通信从SDA的集体行为产生的整个驱动力完成。 由偏置电压建立的静电吸引力用于校准集体组合中涉及的每个致动器的个性化预应力。 这种静电微致动器形成活性三维微导管的一部分,作为一种可用于血管的可能应用。

    Electrolytic machining using pulsed electric current
    5.
    发明授权
    Electrolytic machining using pulsed electric current 失效
    使用脉冲电流的电解加工

    公开(公告)号:US5242556A

    公开(公告)日:1993-09-07

    申请号:US696120

    申请日:1991-05-06

    申请人: Takahisa Masuzawa

    发明人: Takahisa Masuzawa

    IPC分类号: B23H3/00 B23H3/02

    摘要: The invention relates to a method of electrolytically machining the surface of a workpiece by applying positive and negative electric current pulses alternately and repeatedly across the workpiece and a tooling electrode located oppositely in a neutral electrolyte so as to keep a predetermined gap therebetween, wherein the time interval from a negative pulse to a positive pulse is shorter than that from the positive pulse to the next positive pulse. The invention also relates to an apparatus for attaining the method comprising: a device for supporting the workpiece in an electrolytic machining tank; a device for supporting an electrode opposite to the workpiece so as to keep the gap; a power supply means for repeatedly applying across the workpiece and the electrode an electric current waveform wherein its polarity changes alternately and the time interval from a negative pulse to a positive pulse is shorter than that from the positive pulse to the next negative pulse; a device for supplying an electrolyte between the workpiece and the electrode; and a control system for controlling the workpiece fixing device, the electrode supporting device, the power supply means and the electrolyte supplying device.