Keiji Honda

Title: Keiji Honda and His Ball End Mill Innovation.

Introduction

Keiji Honda is an inventor associated with Itami, Japan, and Sumitomo Electric Industries, Limited. His recorded patent concerns a ball end mill designed to use multiple replaceable cutting inserts.

Latest Patents

Honda’s recorded patent, “Ball End Mill with Throw Away Insert,” describes a tool with insert-mounting pockets at opposite positions on its hemispherical body. Each pocket holds multiple inserts with curved cutting edges arranged to generate a hemispherical cutting path, with overlapping coverage.

The inserts nearer the tool’s front end have an axial rake of 0 to 5 degrees, while those farther back have a larger rake of 4 to 8 degrees. Their cutting edges are positioned so that the rear insert’s leading end lies along the extension of the cutting edge ahead of it. Viewed from the front, the inserts form a substantially S-shaped arrangement. Honda has 1 patent listed in the provided information.

Career Highlights

Honda’s listed invention addresses the arrangement and geometry of replaceable inserts in a ball end mill. The design specifies how the inserts’ cutting paths, overlap, and rake angles work together across the tool’s hemispherical portion.

Collaborations

The provided information names Yoshikatsu Mori and Naohiro Nakamura as Honda’s coworkers. It does not specify their roles in the patent or the invention.

Conclusion

Keiji Honda’s recorded patent presents a ball end mill design that coordinates replaceable inserts to create a hemispherical cutting path, reflecting his association with Sumitomo Electric Industries, Limited.