SU952498A1

SU952498A1 - Method of electrochemical machining

Info

Publication number: SU952498A1
Application number: SU752150036A
Authority: SU
Inventors: Константин Иванович Сигачев
Original assignee: Предприятие П/Я Г-4585
Priority date: 1975-06-30
Filing date: 1975-06-30
Publication date: 1982-08-23

Description

(54) СПОСОБ РАЗМЕРНОЙ ЭЛЕКТРОХИМИЧЕСКОЙ ОБРАБОТКИ(54) METHOD FOR DIMENSIONAL ELECTROCHEMICAL TREATMENT

1one

Изобретение относитс к электрофизическим и электрохимическим методам обработки материалов, в частности касаетс способа размерной электрохимической обработки импульсным током.The invention relates to electrophysical and electrochemical methods of processing materials, in particular, relates to a method of dimensional electrochemical processing by pulsed current.

Известен способ размерной электрохимической обработки импульсным током, при котором электроду-инструменту или обрабатываемой: заготовке сообщают механические колебани , синхронно с которыми осуществл ют подачу импульсов технологичес- ю кого тока, а управление рабочей подачей осуществл ют по сигналу обратной св зи, получаемому при взаимном касании электрода-инструмента и обрабатываемой заготовки 1.There is a known method of dimensional electrochemical processing by pulsed current, in which the electrode-tool or the workpiece: the workpiece is informed by mechanical oscillations, synchronously with which the technological current pulses are delivered, and the working feed is controlled by the feedback signal electrode tool and workpiece 1.

Недостатком известного способа вл етс возможность возникновени коротких замыканий между электродом-инструментом и заготовкой при их взаимном касании изза несвоевременного отключени технологического тока вследствие погрешностей в уп- 20 равлении и механической системе. Кроме того, часть технологического времени тер етс в каждом цикле на управление подачей - касание при отключенном токе, чтоThe disadvantage of this method is the possibility of short circuits between the electrode tool and the workpiece when they touch each other due to the untimely shutdown of the process current due to errors in the control and mechanical system. In addition, part of the process time is lost in each cycle for feed control — touch with current off, which is

приводит к снижению производительности процесса обработки.leads to a decrease in processing performance.

Целью изобретени вл етс повыщение производительности и стабилизаци процесса обработки.The aim of the invention is to increase productivity and stabilize the treatment process.

Поставленна цель достигаетс тем, что механические колебани задают с разными амплитудами, при этом через заданное число периодов колебаний с меньшей амплитудой , в течение которых при заданных значени х рабочего зазора подают импульсы технологического тока, производ т колебани с больщей амплитудой, в течение которых производ т управление рабочей подачей .The goal is achieved by the fact that mechanical oscillations are set with different amplitudes, with a predetermined number of oscillation periods with a smaller amplitude, during which, at given operating gap values, technological current pulses are applied, oscillations with a larger amplitude are produced, during which work feed management.

На чертеже представлена циклограмма колебаний и наложени тока.The drawing shows a sequence diagram of the oscillations and current overlay.

На циклограмме по оси ординат отложена величина межэлектродного зазора А, по оси абсцисс - врем Т. Разность амплитуд А{ соответствует минимальному межэлектродному зазору.On the cyclogram along the ordinate axis the value of the interelectrode gap A is plotted, on the abscissa axis - time T. The difference in amplitudes A {corresponds to the minimum interelectrode gap.

Способ осуществл етс следующим образом .The method is carried out as follows.

Claims

Mechanical vibrations of, for example, an electrode tool are reported by two different amplitudes, for example, 1 and 2, which alternate in strict sequence in cycles. The cycle consists of a series of working oscillations 2,3, ..., p with a smaller amplitude of oscillations, during which pulses of technological current are supplied in the intervals Tg-Tz, 4-S - i Tii - Tflj. During oscillation 1 or n + 1, the working feed is controlled with the process off by known methods. Thus, the proposed method allows more processing time to be used to pass the current and thereby increase the processing performance, and also eliminates short circuits. The invention is a method of dimensional electrochemical processing by pulsed current, in which an electrode-instrument or a workpiece is mechanically oscillated synchronously with which the process current pulses are supplied, and the work feed is controlled by a feedback signal received by mutual contact of the electrode tool and workpiece, characterized in that, in order to increase productivity and stabilize the machining process, mechanical vibrations set with different amplitudes, with a predetermined number of oscillation periods with a smaller amplitude, during which, at predetermined values of the working gap, technological tox pulses are applied, oscillations with a larger amplitude, during which the work feed is controlled. Sources of information taken into account during the examination 1. USSR author's certificate No. 260787, cl. B 23 P 1/04, 1963.