Tadahiro Edagawa

Title: The Innovations of Tadahiro Edagawa

Introduction

Tadahiro Edagawa is a prominent inventor based in Kobe, Japan. He has made significant contributions to the field of friction stir welding, showcasing his expertise through his innovative patents. With a total of 3 patents, Edagawa continues to push the boundaries of technology in his field.

Latest Patents

Edagawa's latest patents include a "Method for controlling friction stir welding device" and a "Friction stir welding device." The first patent describes a process where, in a state where a shoulder member is in contact with a contact surface, a pin member is brought into contact with the contact surface to specify a pin movement amount. This amount is the distance from the initial position of the pin member to the contact surface. It also specifies a shoulder displacement amount, which is the displacement amount when the shoulder member retreats due to the contact of the pin member. When both a first condition regarding the pin movement amount and a second condition regarding the shoulder displacement amount are satisfied, the pin member retreats from the contact surface by a predetermined return amount. Furthermore, origin point alignment of the pin member and the shoulder member is performed based on their positions.

The second patent, titled "Friction stir tool control method and friction stir device," outlines a control method for managing the operation of a friction stir tool. This method involves supplying a necessary drive electric current to the tool's drive source. It includes obtaining a pressurizing force change ratio by comparing a predefined set pressurizing force with the actual pressurizing force occurring during the tool's plunging into a workpiece. The drive electric current is then regulated according to this ratio to ensure that the actual pressurizing force matches the set pressurizing force.

Career Highlights

Tadahiro Edagawa is associated with Kawasaki Jukogyo Kabushiki Kaisha, a leading company in the manufacturing sector. His work at Kawasaki has allowed him to develop and refine his innovative ideas, contributing to advancements in welding technology.

Collaborations

Edagawa has collaborated with notable coworkers, including Masahiro Miyake and Norichika Kita. Their combined expertise has fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Tadahiro Edagawa's contributions to friction stir welding through his patents demonstrate his commitment to innovation and