Hiroki Yonekura

Title: Hiroki Yonekura: Innovator in Cutting Tool Technology

Introduction

Hiroki Yonekura is a prominent inventor based in Itami, Japan. He has made significant contributions to the field of cutting tool technology, holding a total of 7 patents. His innovative approaches have led to advancements in the manufacturing of cubic boron nitride cutting tools.

Latest Patents

Yonekura's latest patents include a method for manufacturing cubic boron nitride cutting tools. This method involves creating a cutting tool that includes a base metal and a sintered cubic boron nitride compact at the corner portion of the base metal. This design improves the accuracy of the center height and reduces the angle of inclination or width of a negative rake face. The method also details the grinding process of the compact against a grindstone to form the necessary flank and rake faces. Another notable patent is for a cutting tool that features a cutting insert held in a holder in a detachable manner. This cutting insert has a quadrangular shape with round corners and is made entirely of CBN sinter. It includes principal surfaces and side surfaces that connect to form a cutting edge, with grooves designed to absorb cracks.

Career Highlights

Yonekura is associated with Sumitomo Electric Hardmetal Corporation, where he continues to develop innovative cutting tools. His work has been instrumental in enhancing the performance and durability of cutting tools used in various industrial applications.

Collaborations

Yonekura has collaborated with notable coworkers, including Naoki Watanobe and Katsumi Okamura. Their combined expertise has contributed to the success of various projects within the company.

Conclusion

Hiroki Yonekura's contributions to cutting tool technology exemplify the spirit of innovation. His patents and collaborative efforts continue to influence the industry, showcasing the importance of advancements in manufacturing techniques.