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:
Jan. 01, 2013
Filed:
Sep. 04, 2009
Shoichiro Watanabe, Shimotsuma, JP;
Hidehiko Nagaya, Joso, JP;
Norio Aso, Sashima-gun, JP;
Yasuharu Imai, Shimotsuma, JP;
Shoichiro Watanabe, Shimotsuma, JP;
Hidehiko Nagaya, Joso, JP;
Norio Aso, Sashima-gun, JP;
Yasuharu Imai, Shimotsuma, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
The cutting tool for machining an inner surface of a hole is provided with a cutting tool main body extending in the shape of a shaft, a cutting edge portion mounted on a head portion of the cutting tool main body so as to radially-outwardly protrude with respect to the center axis of the cutting tool main body, and a coolant hole formed at the cutting tool main body so as to have an opening at a position apart from the cutting edge portion on a circumferential surface of the head portion of the cutting tool main body, thereby flushing out a coolant from the opening to an axially orthogonal plane orthogonal to the center axis and also along a protruding direction at which the cutting edge portion protrudes. The opening of the coolant hole faces a direction different from the protruding direction of the cutting edge portion in the radial direction with respect to the center axis.