METHOD, DEVICE AND TOOL FOR SLIGHT-CHAMFERING HOLE OPENING EDGE

METHOD, DEVICE AND TOOL FOR SLIGHT-CHAMFERING HOLE OPENING EDGE

PROBLEM TO BE SOLVED: To uniformly and efficiently slight-chamfer a drill hole opening edge without cutting the protrusion. SOLUTION: When the opening edge of a hole 4 drilled adjoining the protrusion 2 is slight-chamfered by a drill, the drill is rotated around a drill axis 5 with the base end side...

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Hauptverfasser: SHIGA SEISHI, YOSHIZAKI TAKAYOSHI
Format: Patent
Sprache:eng
Schlagworte:
BORING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
TRANSPORTING
TURNING
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creator SHIGA SEISHI
YOSHIZAKI TAKAYOSHI
description PROBLEM TO BE SOLVED: To uniformly and efficiently slight-chamfer a drill hole opening edge without cutting the protrusion. SOLUTION: When the opening edge of a hole 4 drilled adjoining the protrusion 2 is slight-chamfered by a drill, the drill is rotated around a drill axis 5 with the base end side of the drill inclined to the opposite side of the protrusion 2 for the hole axis L and the tip end side elastically bent for the base part side of the drill. When the opening edge of the hole 4 drilled on a bent surface is slight-chamfered by the drill, the drill is rotated around the drill axis 5 with the tip end side elastically bent for the base part side of the drill. COPYRIGHT: (C)2004,JPO
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subjects BORING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
TRANSPORTING
TURNING
title METHOD, DEVICE AND TOOL FOR SLIGHT-CHAMFERING HOLE OPENING EDGE
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