Novel shrink fit holder and methods of drilling and reaming

There is disclosed a unitary drill bit and chuck structure comprising: a drill bit (46); and a chuck (30) enclosing a portion of the drill bit (46) and having a thread (24) located thereon to permit attachment of said unitary drill bit and chuck structure to a drilling device; in which the ch...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ROBERT UNSWORTH
Format:	Patent
Sprache:	eng
Schlagworte:	BORING COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT COMBINED OPERATIONS DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING MACHINE TOOLS MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS TRANSPORTING TURNING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	There is disclosed a unitary drill bit and chuck structure comprising: a drill bit (46); and a chuck (30) enclosing a portion of the drill bit (46) and having a thread (24) located thereon to permit attachment of said unitary drill bit and chuck structure to a drilling device; in which the chuck (30) is heat shrunk onto the drill bit (46) thereby forming the unitary structure through direct bonding of the chuck (30) with the drill bit (46).