Wire electrode type electric discharge machining apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTakuji Magara, Toshio Suzuki
Life of this patent
Estimating the term…
Abstract
A wire electrode type electric discharge machining apparatus comprising a control means for controlling an interelectrode gap between a wire electrode and a workpiece to be machined to correct for a change which is caused by a change in the amount of machining removal at a corner. The machining accuracy of the wire electrode type electric discharge machining apparatus is remarkably improved.
Claims31
A wire electrode type electric discharge machining apparatus in which a wire electrode and a workpiece to be machined are moved relative to each other with an interelectrode gap and a voltage is applied to said interelectrode gap between said wire electrode and workpiece to machine said workpiece into a desired configuration, comprising;
- a first arithmetic means for calculating a first distance between a start point of a curved portion of said workpiece and a position before the start point where the amount of machining removal starts changing;
- a first determining means for determining whether or not a second distance between a present machining position and the start point coincides with the first distance;
- and
- a control means for controlling the interelectrode gap to correct for the change thereof which is caused by a change in the amount of machining, in response to an output signal of said first determining means.
Dependencies are inferred from the claim text.