BATTERY CAN, METHOD FOR MANUFACTURING THE SAME AND DEVICE FOR MANUFACTURING THE SAME, AND BATTERY USING BATERY CAN

A battery case is made by cutting from a blank case of a bottomed cylindrical battery case having an unwanted portion at an opening portion the unwanted portion from the case wall in the circumferential direction by a blade. The cutting of the case wall is performed so as to render a cutting-end por...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIKAWA TOSHIKI, MORIWAKI MASAJI, KATO SEIICHI, TOKUMOTO TADAHIRO, GODA YOSHIO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS BROACHING ELECTRICITY FILING LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOTOTHERWISE PROVIDED FOR MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PLANING PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SAWING SCRAPING SHEARING SLOTTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A battery case is made by cutting from a blank case of a bottomed cylindrical battery case having an unwanted portion at an opening portion the unwanted portion from the case wall in the circumferential direction by a blade. The cutting of the case wall is performed so as to render a cutting-end portion higher than a cutting-start portion. Thus, re-cutting of the cutting-start portion by the blade after it has already completed one rotation can be avoided. As a result, the generation of thread-like chips from re-cutting of the cut surface can be avoided.