Koichiro Yokoyama

Title: Koichiro Yokoyama: Innovator in Composite Sintered Machine Components

Introduction

Koichiro Yokoyama is a notable inventor based in Matsudo, Japan. He has made significant contributions to the field of manufacturing, particularly in the development of composite sintered machine components. With a total of 2 patents to his name, Yokoyama's work showcases his expertise and innovative spirit.

Latest Patents

Yokoyama's latest patents focus on a process for manufacturing composite sintered machine components. The first patent describes a composite sintered machine component that features an approximately cylindrical inner member and an approximately disk-shaped outer member. The inner member is designed with pillars arranged in a circumferential direction at equal intervals, along with a center shaft hole surrounded by these pillars. The outer member contains holes that correspond to the pillars of the inner member and a center shaft hole that aligns with the inner member's center shaft hole. The process involves compacting both members individually using an iron-based alloy powder or a mixed powder, followed by tightly fitting the pillars into the outer member's holes and sintering them together.

The second patent also details a similar process for manufacturing composite sintered machine components. It emphasizes the importance of interference fitting between the circumferential side surfaces of the inner member's pillars and the outer member's holes. This ensures a precise fit with an interference of 0 to 0.03 mm. Additionally, the radial side surfaces of the pillars and holes are designed to be either interference fitted at not more than 0.01 mm or through fitted, enhancing the overall integrity of the component.

Career Highlights

Yokoyama is currently employed at Hitachi Powdered Metals Co., Ltd., where he continues to innovate and develop advanced manufacturing processes. His work has contributed to the company's reputation for excellence in the field of powdered metals and composite materials.

Collaborations

Yokoyama collaborates with Hiromasa Imazato, a fellow innovator in the industry. Their partnership has fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Koichiro Yokoyama's contributions to the field of composite sintered machine components highlight his innovative approach and dedication to advancing manufacturing processes. His patents reflect a deep understanding of material science and engineering, positioning him as a key figure in the