公开(公告)号：US3881148A

公开(公告)日：1975-04-29

申请号：US31014372

申请日：1972-11-28

申请人： HITACHI SEIKO KK

发明人： MIZUHARA YASUSHI ,  KIKUMOTO TAKASHI ,  ABE TSUWAO ,  HITOMI HIROYUKI ,  OCHIAI MASAYASU ,  ITOH TUGUAKI

IPC分类号： B23H3/02 ,  B23H5/00 ,  H02M7/40

CPC分类号： B23H3/02

摘要： A power supply for an electrical processing apparatus of the kind having means for applying electrical power across the work gap between an electrode and a workpiece disposed opposite to each other, means for supplying an electrolyte to the work gap, and means for moving the electrode and workpiece toward each other in their relative positions thereby processing the workpiece into a desired shape. The power supply comprises transformer means and rectifying means for obtaining the electrical power, means for holding the peak value of the output voltage of the rectifying means in the form of a d.c. voltage, and means for renewing the d.c. voltage in such a manner that a d.c. voltage level is established in the voltage holding means corresponding to the peak values of successive waveform portions whereby the peak value of the required working voltage can be reduced, undesirable spark discharge between the electrode and the workpiece can be prevented, and the precision of electrical processing can be remarkably improved.

摘要翻译： 一种用于电加工设备的电源，具有用于在电极和彼此相对设置的工件之间的工作间隙上施加电力的装置，用于向工作间隙供应电解质的装置，以及用于使电极和 工件在其相对位置彼此相对移动，从而将工件加工成所需的形状。 电源包括用于获得电力的变压器装置和整流装置，用于以直流形式保持整流装置的输出电压的峰值的装置。 电压，以及更新直流电的方式。 电压以这样的方式 在电压保持装置中建立对应于连续波形部分的峰值的电压电平，由此可以减少所需工作电压的峰值，并且可以防止电极和工件之间的不期望的火花放电，并且电加工的精度 可以显着提高。

公开(公告)号：US3883793A

公开(公告)日：1975-05-13

申请号：US38305073

申请日：1973-07-27

申请人： HITACHI SEIKO KK

发明人： MIZUHARA YASUSHI ,  SUZUKI YASUO

IPC分类号： B23H5/00 ,  B23H3/02 ,  B23P1/04

CPC分类号： B23H3/02

摘要： A power supply system for use in an electrolytic grinding apparatus comprising a rectifying circuit, a phase number reducing circuit connected to the rectifying circuit for converting an a.c. voltage into a working voltage having a pulsating waveform of a repetition frequency no higher than that of the single-phase half-wave rectified waveform of the a.c. voltage, and a working voltage control circuit connected to the rectifying circuit for controlling the peak value of the working voltage to a predetermined constant value thereby improving the precision of grinding and surface roughness of workpieces.

摘要翻译： 一种用于电解研磨装置的电源系统，包括整流电路，连接到整流电路的相数减少电路，用于转换直流电。 电压变为工作电压，该工作电压具有不高于直流电的单相半波整流波形的重复频率的脉动波形。 电压和连接到整流电路的工作电压控制电路，用于将工作电压的峰值控制到预定的常数值，从而提高了研磨精度和工件的表面粗糙度。