Other

Abram Lazarevich Livshits

Vladimir Vasiliev

Viktor K Nastasy

Vadim Evgenievich Polotsky

Roalda B Isakova

Genrikh A Alexeev

Ernest Alexandrovich Annenberg

Valadimir S Vasiliev

Valery Mikhailovich Lakhtjukhov

Alexandr I Safronov

Mark S Otto

Yakov Iosifovich Zlatkin

Jury F Prasolov

A device for automatic control of an electro-erosion machine comprises a sensing unit for sensing the impedance of the interelectrode gap and developing a signal proportional to resistance of an interelectrode gap, a reference voltage source, said unit and said source being connected to a drive feeding a tool electrode, a transmitter for determining an a-c component of interelectrode gap resistance connected to the output of the signal separation unit and a circuit for regulating the flow of working fluid, said transmitter being connected to the input of said circuit, while the output of said circuit is coupled to the working member of a mechanical flow regulation system.

Device for automatic control of electro-erosion machine

A method of electrochemical processing comprises the steps as follows: maintaining a variable gap between a processing electrode and a work-piece, having a value equal to a minimum permissible gap corresponding to processing conditions; with the gap value reaching a critical value, moving the processing electrode to obtain a gap approximately equal to or less than the critical value; applying a train of voltage pulses; and changing the length of each pulse and/or the space interval between pulses. When the space interval becomes equal to a value commensurate with the time of withdrawal of the processing electorode, a single voltage pulse is applied. An apparatus for chemical processing comprises two pickups to sense the gas content of the interelectrode space, open of said pickups being coupled to the drive means control unit, a pickup to sense the state of contact of the processing electrode and the workpiece, a processing duty decoder coupled to a program control unit to control the movement of the processing electrode. The apparatus also comprises a control signal decoder to decode control signals characteristic of the required gap, a gap value program control unit, and a control unit to control the operating duties of the voltage source.

Electrochemical method for processing work-pieces

A metal-cutting machine comprising a base on which are mounted a table for clamping the workpiece being machined, and longitudinal ways for the carriage, including a longitudinal guide-bar which runs through a longitudinal open-end passage in the carriage and held in position by its ends to the machine base. The carriage has its own drive, and provision is made therein for a transverse open-end passage whose axis lies in a plane parallel with that of the axis of the aforesaid longitudinal passage, the transverse passage serving as the transverse ways for the cross guide-bar fitted therein, one of the ends of the guide-bar carrying the power head with the cutting tool, while its other end is kinematically associated with the other individual drive. The self-contained drives of the carriage and cross guide-bar are controlled from a program-copying device.

Electric discharge machine with a program copier and a tool support head

A device for automatically controlling an electroerosion cutting machine in which a unit for selecting a direction of rotation of drive motors in the course of erosion working, includes a coincidence circuit and a reversible ring shift register whose outputs are connected to inputs of the coincidence circuit, whereas the latter's outputs are electrically coupled to coordinate drive motors which move an electroerosion tool relative to the workpiece, and an optical head relative to a coordinate follow table. The optical head is electrically connected to the register and coincidence circuit via a first amplifier having four divided outputs, two of which are connected to respective inputs of the ring shift register, whereas the remaining two are connected to the inputs of the coincidence circuit.

Device for automatically controlling an electroerosion cutting machine

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Moscow, Russia

Abram Lazarevich Livshits