Patent ID: 11890691
Assignee: MAKINO MILLING MACHINE CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. A control method for a wire electric discharge machining device including a wire and a sensor measuring an inter-electrode voltage between the wire and a work, the control method comprising:
setting a target voltage value in accordance with a shape of a final machined product to be formed from the work,
calculating an amplitude of the inter-electrode voltage measured by the sensor,
calculating a target voltage correction value for causing the amplitude of the inter-electrode voltage to approach a target amplitude that is set to a value larger than zero,
correcting the target voltage value by using the target voltage correction value, and
controlling an inter-electrode distance between the wire and the work so that the inter-electrode voltage measured by the sensor approaches the corrected target voltage value.