MACHINING METHOD FOR WORKPIECE HAVING INSULATING CERAMIC COAT

MACHINING METHOD FOR WORKPIECE HAVING INSULATING CERAMIC COAT

PROBLEM TO BE SOLVED: To provide a machining method capable of forming a micro hole of high precision through a workpiece having an insulating ceramic coat. SOLUTION: In this machining method for a workpiece having an insulating ceramic coat, a conductor 2 is laid on the surface of a workpiece 11 ha...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: BEPPU SEIJI, HARUNA FUMIAKI
Format: Patent
Sprache:eng
Schlagworte:
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
TRANSPORTING
WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a machining method capable of forming a micro hole of high precision through a workpiece having an insulating ceramic coat. SOLUTION: In this machining method for a workpiece having an insulating ceramic coat, a conductor 2 is laid on the surface of a workpiece 11 having an insulating ceramic coat 1, and subjected to an electric discharge machining process with a machining fluid fed, thereby forming a through-hole. Subsequently an electric discharge machining process applies to the insulating ceramic coat 1, using a conductor layer 4 formed as a result of the adhesion, deposition and impregnation of a machining layer generated due to the aforesaid electric discharge machining process. In this case, a carbon sheet 5 is laid between the coat 1 and the conductor 2, and the feed amount of the machining fluid is reduced immediately before the start of the electric discharge machining process for the coat 1.