US 4,030,329 AGranted

Device for electrical discharge forming

OwnerViktor Nikolaevich Chachin, Alexandr Julyanovich Zhuravsky +3inventors

InventorsViktor Nikolaevich Chachin, Alexandr Julyanovich Zhuravsky, Gennady Nikolaevich Zdor, Vladimir Leontievich Shaduya, Elena Yakovlevna Golovkina

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

A device for electrical discharge forming comprises a fixed plate upon which is mounted an explosion chamber. Said chamber accommodates an electrode while its wall serves as the other electrode. To set off an explosion, the electrodes are electrically connected by a wire fed into the explosion chamber through a hole in its wall, said hole being made in the area of a step formed in the chamber wall. Installed near this hole are two knives one of which is rigidly fixed while the other one is movable for approaching the first knife and cutting off the wire. The cut-off end of the wire comes to rest on said step. In the device according to the invention the end of the wire does not stick to the hole in the chamber wall which eliminates the necessity of the operator cleaning the hole before feeding a fresh piece of the wire into the chamber.

Claims3

Dependent claims

A device for electrical discharge forming comprising:

a fixed plate;
an explosion chamber mounted on said fixed plate;
a die pressed against said explosion chamber in the course of forming;
an electrode accommodated in said explosion chamber;
a wall of said explosion chamber serving as the other electrode and having a hole;
a wire passing through said hole and intended to connect electrically said electrodes;
a step made in said wall at the side opposite to that adjoining said die and located somewhat lower than said hole for the passage of said wire, two knives for cutting of said wire, one of said two knives being secured rigidly near said hole and the other one of said two knives being movably installed near said hole for moving along the geometrical axis of said explosion chamber so that when said die moves together with said explosion chamber towards said fixed plate, said two knives approach each other and cut off said wire whose sheared end then comes to rest on said step.

4 more elements

Dependencies are inferred from the claim text.