Tool holder

In order to provide a tool holder which greatly reduces frictional resistance between a locknut and a taper collet, and eliminates a twisting of the taper collet during tightening of the locknut, in a tool holder comprising a locknut 13 which pushes a taper collet 12 into a tapered hole 115 of a col...

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Bibliographic Details
Main Authors TAGUCHI MASAHIRO, YAMAMOTO YUSAKU, NAKAI EISAKU
Format Patent
LanguageEnglish
Published 02.08.2005
Edition7
Subjects
BORING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
TRANSPORTING
TURNING
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Summary:In order to provide a tool holder which greatly reduces frictional resistance between a locknut and a taper collet, and eliminates a twisting of the taper collet during tightening of the locknut, in a tool holder comprising a locknut 13 which pushes a taper collet 12 into a tapered hole 115 of a collet chuck body 11 to chuck a cutting tool 15 , between a reference end 123 of the tape collet 12 and a collet supporting portion 131 opposed thereto, interposed is a bearing washer 14 to reduce frictional resistance between both contact surfaces. To both surfaces of this bearing washer 14 , namely, to the respective surfaces which come into contact with the reference end 123 and collet supporting portion 131 , surface treatment by any of ion nitriding, DLC (Diamond-Like Carbon) coating, and TiN coating is applied.
Bibliography:Application Number: US20030391917