Apparatus for the spark deposition of metals

In an apparatus for the electric spark deposition of metals upon a workpiece, the apparatus having a table movable in the x and y directions receiving the workpiece upon which the metal is to be deposited, and a rotatable depositing electrode-anode, the improvement which comprises a command unit to supply commands for the operation of the motors during motion or stopping of the apparatus, an impulse generator, first and second current supply units, a following system to determine any deviation in a predetermined distance between the electrode-anode and the workpiece a logic block to allow the switching on of each of the activating motors in response to a signal from the following system, means including a first electric motor for moving the depositing electrode-anode vertically, means including second and third electric motors for moving the table horizontally in the x- and y-directions, respectively, means including a fourth motor for rotating the electrode-anode, a first one of the outputs of the first current supply unit being connected to the command unit, a second output of the first current supply unit being connected to the impulse generator;

• the impulse generator having positive and negative outputs connected correspondingly to the second current supply unit and the moveable table of the apparatus and also to the following system;
• a second input of the following system being connected to one of the outputs of the command unit;
• the command unit having additional outputs connected to the first motor for producing the vertical motion of the depositing electrode-anode and the depositing head of the apparatus, the second motor for driving the table in the x-direction and the third motor for driving the table in the y-direction;
• the logic block selectively switching on each of the first, second, and third motors, said logic block having an input which is connected to the output of the following system;
• the second motor for the horizontal movement of the table in the x-direction, the third motor for the horizontal movement of the table in the y-direction, and the first motor for the vertical motion of the electrode-anode being additionally connected to respective ones of the outputs of the logic block.