Daisuke Hamanaka

Title: Daisuke Hamanaka: Rack Bar and Steering Device

Introduction

Daisuke Hamanaka is an inventor associated with Hitachi Astemo Ltd. and based in Hitachinaka, Japan. His patent work includes an engineering improvement to rack bars and steering devices.

Latest Patents

Hamanaka is credited with 1 patent, titled “Rack Bar and Steering Device.” The invention concerns the endmost tooth bottom on a rack bar’s rack tooth molding part. It makes this tooth bottom shallower than an ordinary tooth bottom, reducing the amount of material that flows during forging. This design lowers stress on the forging die and helps suppress heat checking, a form of thermal damage to the die.

Career Highlights

Hamanaka’s documented patent contribution addresses a specific manufacturing challenge in forging rack teeth. By modifying the endmost tooth bottom, the design aims to improve die durability during production.

Collaborations

His listed coworkers include Shinichi Yamanaka and Norihiro Kimura. The available information identifies them as coworkers but does not specify their roles in the patent.

Conclusion

Daisuke Hamanaka’s patent presents a targeted forging improvement that reduces stress on the die and helps prevent heat checking in the production of rack bars and steering devices.