Tadatomo Hatayama

Title: Tadatomo Hatayama: Innovator in Machining Tools and Fracture Splitting Apparatus

Introduction

Tadatomo Hatayama is a notable inventor based in Tochigi, Japan. He has made significant contributions to the field of machining tools and fracture splitting apparatus, holding a total of 3 patents. His innovative designs have enhanced manufacturing processes, particularly in the automotive industry.

Latest Patents

One of Hatayama's latest patents is a machining tool designed to form a first relief surface, a valve seat surface, and a second relief surface by cutting the inner periphery of a valve seat blank that has an opening. This machining tool features a tool body that is rotationally driven about an axis, a plurality of cutting tools that rotate with the tool body, and a cartridge that is mounted to the tool body, allowing it to move forward and backward along the axis. Additionally, a cam is in contact with the base end surface of the cartridge, facilitating its movement. At least one of the cutting tools is mounted to the cartridge, showcasing the tool's versatility and efficiency.

Another significant patent is the actuator of a connecting-rod fracture splitting apparatus. This apparatus includes a piston rod with one end extending through a lid of the cylinder and connected to a wedge. A free piston is slidably mounted on the piston rod and can abut against the upper surface of the piston. When pressure fluid is supplied to act on the upper surface of the piston, the free piston imparts a preload to a hole in the big end section of the connecting rod. By supplying pressure fluid to the region above the free piston, it is driven downward, colliding with the upper surface of the piston. This action causes the divided mandrel members to move apart, effectively fracturing the large end section of the connecting rod.

Career Highlights

Tadatomo Hatayama is currently employed at Honda Motor Co., Ltd., where he continues to innovate and develop advanced technologies. His work has been instrumental in improving the efficiency and effectiveness of manufacturing processes within the automotive sector.

Collaborations

Throughout his career, Hatayama has collaborated with esteemed colleagues such as Hiroshi Kunieda and Munehiko Higuchi. These partnerships have fostered a creative environment that encourages the development of groundbreaking inventions.

Conclusion

Tadatomo Hatayama is