Yutaka Sunaga

Title: Yutaka Sunaga: Innovator in Metal Tube Drawing Technology

Introduction

Yutaka Sunaga is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of metal tube drawing technology, holding a total of 3 patents. His innovative methods have advanced the manufacturing processes for seamless metal tubes, particularly those with upset portions.

Latest Patents

Sunaga's latest patents include methods for cold drawing seamless metal tubes, each having an upset portion on both ends. One of his patents describes a method and device for cold drawing these tubes, utilizing a draw bench that comprises a reducing die, a die control unit, a plug control unit, and a draw unit. The design of the reducing die features an internal surface with a tapering inlet portion, a small diameter bearing portion, and an oppositely inclined outlet portion. The plug is intricately designed with various tapered and cylindrical portions to facilitate the drawing process. Another patent outlines a method of cold drawing seamless metal tubes, emphasizing the ability to change the cross-sectional reducing area between the reducing die and the plug according to the desired forms of the mother tube.

Career Highlights

Throughout his career, Yutaka Sunaga has worked with reputable companies, including Sanwa Kokan Co., Ltd and Sanwa Kokan Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to advancements in metalworking technologies.

Collaborations

Sunaga has collaborated with various professionals in his field, including his coworker Toshio Sakurai. Their joint efforts have likely led to further innovations and improvements in the technologies they have developed.

Conclusion

Yutaka Sunaga's contributions to the field of metal tube drawing technology are noteworthy. His innovative methods and patents have significantly impacted manufacturing processes, showcasing his expertise and dedication to advancing industrial technology.