Takatoshi Yabuta

Title: Takatoshi Yabuta: Improving Drill Accuracy Through Tip Design

Introduction

Takatoshi Yabuta is an inventor associated with Toyota Jidosha Kabushiki Kaisha in Miyoshi, Japan. His patent work addresses drill design, aiming to combine accurate hole processing with an inexpensive manufacturing approach. He is credited with 1 patent.

Latest Patents

Yabuta’s patent, “Drill,” describes a drill tip designed to improve processing accuracy while keeping production costs low. The design removes the chisel edge at the tip and forms a pyramid in its place. The edges extending from the pyramid’s apex are set at an inclination angle greater than half the drill tip angle. This geometry resolves the chisel-step issue and supports more stable cutting, helping improve hole accuracy. The pyramid can also be formed by grinding the tip of an existing drill, offering a practical, low-cost manufacturing method.

Career Highlights

Yabuta’s documented patent contribution focuses on a practical improvement to a widely used tool. By addressing both cutting stability and manufacturing cost, the drill design connects performance goals with a straightforward production process. He is associated with Toyota Jidosha Kabushiki Kaisha.

Collaborations

Takashi Nakayama and Yasushi Chiba are identified as Yabuta’s coworkers. The available information does not specify their roles in the drill patent.

Conclusion

Takatoshi Yabuta’s drill invention combines a redesigned tip with an accessible grinding method to support stable cutting, improved hole accuracy, and economical production.