公开(公告)号：US20030222052A1

公开(公告)日：2003-12-04

申请号：US10419788

申请日：2003-04-22

Applicant: CHARMILLES TECHNOLOGIES S.A.

Inventor： Roland Martin ,  Sebastian Dorthe ,  Maurizio Tognolini

IPC: B23H001/02

CPC classification number: B23H1/022 ,  B23H2300/20

Abstract: The device for machining by electroerosion comprises an electrode-tool (EO) and an electrode-workpiece (EP) constituting the opposite poles of a working gap (GA) and an electrical circuit with a double voltage source (UD) connected to a supply network (A) arranged so as to produce erosive discharges between the electrode-tool (EO) and the electrode-workpiece (EP). This double voltage source (UD) comprises a first (U1) and a second (U2) voltage source connected galvanically to each other by their poles. This double source (UD) is connected to the working gap by at least four separate branches (B1 to B4) of which at least one comprises a self-induction element (L1, L1). Switching means (SW1, SW2) permit producing by selective connection of said branches at least two increasing current slopes and at least two decreasing current slopes. These branches are arranged such that the excess self-induction energy of the electrical circuit, not consumed by the erosive discharges, will be returned to the double source (UD). Transfer means (PO) serve as a current pump to carry out an energy transfer between the two voltage sources (U1, U2) of the double source (UD). This device thus permits obtaining an electroerosion generator applicable to any type of electroerosion with current impulses having a programmable profile that comprises at least two different increasing slopes and two different decreasing slopes. Each of the sources can be connected to the supply network (A). The electrical energy is entirely devoted to machining, with a substantial saving of energy.

Abstract translation: 通过电蚀加工的装置包括电极工具（EO）和构成工作间隙（GA）的相反极的电极 - 工件（EP）和具有连接到供电网络的双电压源（UD）的电路 （A）布置成在电极工具（EO）和电极 - 工件（EP）之间产生腐蚀性放电。 该双电压源（UD）包括通过它们的极彼此电连接的第一（U1）和第二（U2）电压源。 该双重源（UD）通过至少四个独立的分支（B1至B4）连接到工作间隙，其中至少一个包括自感应元件（L1，L1）。 切换装置（SW1，SW2）允许通过选择性地连接所述分支至少两个增加的电流斜率和至少两个减小的电流斜率来产生。 这些分支被布置成使得不被侵蚀性放电消耗的电路的过量自感能将被返回到双源（UD）。 转移装置（PO）用作电流泵，以在双源（UD）的两个电压源（U1，U2）之间执行能量传递。 因此，该装置可以获得适用于具有可编程轮廓的电流脉冲的任何类型电腐蚀的电腐蚀发生器，其包括至少两个不同的增加斜率和两个不同的减小斜率。 每个源都可以连接到供应网络（A）。 电能完全用于加工，节省了大量能源。