CUTTER, PUNCHING MACHINE, INFORMATION RECORDING MEDIUM MANUFACTURING DEVICE AND CENTRAL HOLE FORMING METHOD

PROBLEM TO BE SOLVED: To provide a cutter capable of reducing eccentricity of a punching hole when forming the punching hole in a workpiece member. SOLUTION: This cutter has a cylindrical blade 52, and a positioning part 53 capable of positioning an edge 52a of the blade 52 is arranged along a base...

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Bibliographische Detailangaben
Hauptverfasser:	DOMON MIKIO, KANEKO YUKIO, USAMI MAMORU, IDE JUNICHI, KOYAMA ATSUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	CUTTING CUTTING-OUT HAND CUTTING TOOLS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PERFORATING PERFORMING OPERATIONS PHYSICS PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING STAMPING-OUT TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a cutter capable of reducing eccentricity of a punching hole when forming the punching hole in a workpiece member. SOLUTION: This cutter has a cylindrical blade 52, and a positioning part 53 capable of positioning an edge 52a of the blade 52 is arranged along a base end part outer peripheral surface of the blade 52. In this case, a punching blade part 22 is inserted from the opening part side of a recessed part in the workpiece member, and is used when forming the punching hole by punching a bottom surface of the recessed part. An outer diameter of a positioning part 53 is desirably formed in a diameter smaller than an inner diameter of the recessed part in the workpiece member, and in substantially the same diameter as the inner diameter of the recessed part. COPYRIGHT: (C)2005,JPO&NCIPI