The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 2017
Filed:
Mar. 05, 2013
Daishowa Seiki Kabushiki Kaisha, Higashiosaka-shi, Osaka, JP;
Hirokazu Suruga, Higashiosaka, JP;
DAISHOWA SEIKI KABUSHIKI KAISHA, Higashiosaka-shi, Osaka, JP;
Abstract
Provided is a tool holding structure capable of effectively preventing a cutting tool from coming off a chuck portion. An outer fitting portion A is formed in an outer face of a shank portionof a cutting tool T and an inner fitting portion B is formed in an inner face of a chuck portionof a tool holder. A fitting memberis provided to be fitted to the outer fitting portion A and the inner fitting portion B respectively. The fitting memberincludes a protruding portionwhich protrudes from an outer circumference of the shank portionwhen fitted to the outer fitting portion A. A guide grooveis formed for guiding the protruding portionof the fitting memberfrom an open side of an inner spaceto the inner fitting portion B. The inner fitting portion B includes a rotation preventing face for preventing relative rotation between a holder bodyand the cutting tool T in association with contact thereof with the protruding portionand a slip-out preventing face for preventing slip-out of the cutting tool T in association with contact thereof with the protruding portion