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. 25, 2005
Filed:
Mar. 18, 2003
Takahito Kuroda, Ritto, JP;
Ryosuke Okanishi, Moriyama, JP;
Yasushi Sakamoto, Yasu-gun, JP;
Katsutoshi Maeda, Shiga, JP;
Takahito Kuroda, Ritto, JP;
Ryosuke Okanishi, Moriyama, JP;
Yasushi Sakamoto, Yasu-gun, JP;
Katsutoshi Maeda, Shiga, JP;
Hitachi Tool Engineering Ltd., Tokyo, JP;
Abstract
In a radius end mill having a bottom edge formed on the end face thereof, a radius edge designed in a substantially quarter arc shape and formed at a corner portion thereof, and an outer peripheral edge formed spirally on the side surface thereof, the bottom edge and the radius edge being continuously connected to each other at a connecting point A while the radius edge is continuously connected to each other at a connecting point B, when a view taken along a plane that passes through the connecting points A and B and crosses a rake face of the radius edge is represented by an R cross-sectional view, the rake face of the radius edge is designed to have a convex curved line extending from the connecting point A to the connecting point B in the R cross-sectional view.