Other

Fuji Seiko Limited

Tetsuro Nakanose

Motoshi Nakamura

Akio Fukui

Toshihiro Yasuda

Mitsuhiko Tomioka

Kunitoshi Miyazaki

Atsushi Iwahori

Hiroyasu Sakai

Tetsuhiro Kawazoe

A reamer includes: (a) an axially-distal-end small-diameter portion; (b) a guide portion which is axially adjacent to the small-diameter portion; (c) at least one flute which is formed in an outer circumferential surface of the reamer and which extends from the axially distal end of the reamer toward the axially distal end of the reamer; and (d) at least one land surface which is circumferentially adjacent to the flute. The land has a cutting blade portion formed therein in the axially-distal-end small-diameter portion. A first radial distance from an axis of the reamer to a radically outer end of the cutting blade portion is larger than a second radial distance from the axis to the land surface in the axially-distal-end small-diameter portion. The first radial distance is smaller than a third radial distance from the axis to the land surface in the guide portion.

Method of finishing inner circumferential surface, and reamer

A reamer including; a generally cylindrical cutter body having (a) a flute formed in an outer circumferential surface of the cutter body and extending from an axially distal end of the cutter body toward an axially proximal end of the cutter body, (b) a cutting blade portion positioned at a longitudinally distal end of a downstream one of widthwise opposite edges of the flute as viewed in a rotating direction of the reamer, and (c) a guide portion having a guide surface which is circumferentially adjacent to the flute and which circumferentially extends over at least 240&deg; about an axis of the cutter body. The guide surface is a part of the outer circumferential surface of the cutter body.

Reamer with guide surface and method of finishing hole by using the same

Growing community of inventors

Nagoya, Japan

Tetsuro Nakanose