Method of predicting a short circuit in an electrolytic finishing system
AssigneeShizuoka Seiko Co., Ltd.
InventorsTeruo Asaoka, Haruki Sugiyama, Shogo Yoshioka
Life of this patent
Estimating the term…
Abstract
Method of predicting a short circuit in an electrolytic finishing system where a machining pulse is supplied between an electrode and a work disposed in electrolyte with a predetermined space is disclosed. An abnormal change of electrode-to-electrode voltage during the supply of the machining pulse is detected, and the supply of the machining pulse is stopped in accordance with the detection.
Claims8
A method of predicting a short circuit in an electrolytic finishing system where a machining pulse is supplied between an electrode and a work disposed in electrolyte with a predetermined space there-between, so as to electrolytically finish the work, the method comprising the steps of:
- detecting an abnormal increase of electrode-to-electrode voltage during supply of said machining pulse, said abnormal increase occurring independently of an increase of voltage at a short circuit between the electrode and the work at a time before the short circuit;
- and
- cutting off the supply of said machining pulse in according with the detection of the abnormal increase.
A method of predicting an occurrence of short circuit in an electrolytic finishing system where a machining pulse caused by discharging a capacitor is supplied between an electrode and a work disposed in electrolyte with a predetermined space, so as to electrolytically finish the work, the method comprising:
- setting a reference value;
- detecting an abnormal electrode-to-electrode electric energy change during said machining pulse duration, said abnormal electrode-to-electrode electric energy change occurring independently of a change of electric energy at a short circuit between the electrode and the work at a time before the short circuit;
- comparing the abnormal electrode-to-electrode electric energy change with said set reference value;
- and
- cutting off the supply of the machining pulse in accordance with a result of the comparison.
A method of predicting a short circuit in an electrolytic finishing system where machining pulse is supplied between an electrode and a work disposed in electrolyte with a predetermined space, there-between, so as to electrolytically finish the work, the method comprising the steps of:
- detecting an abnormal decrease of electrode-to-electrode voltage during supply of said machining pulse, said abnormal decrease occurring before a short circuit between the electrode and the work;
- and
- cutting off the supply of said machining pulse in accordance with the detection of the abnormal decrease.
Dependencies are inferred from the claim text.