Company Filing History:
Years Active: 2014-2018
Title: Innovations by Eiichi Nunokawa
Introduction
Eiichi Nunokawa is a notable inventor based in Iwaki, Japan. He has made significant contributions to the field of cutting tools, particularly through his innovative designs that enhance manufacturing efficiency. With a total of 2 patents, Nunokawa's work is recognized for its practical applications in threading processes.
Latest Patents
Nunokawa's latest patents include a cutting insert for threading and a tool body and cutting tool. The cutting insert for threading features two opposing end surfaces and a peripheral side surface that extends between them. This design includes a first side surface portion and a second side surface portion arranged at different positions in a circumferential direction. A cutting edge is formed at the intersecting ridgeline portion between the first end surface and the first side surface portion, with at least a portion of this cutting edge shaped to correspond to a thread groove. The second side surface portion has an inclined portion that enlarges outward, preventing the cutting insert from floating when engaged with a tool body.
The threading cutting insert achieves high shape accuracy for screws being processed while also reducing manufacturing costs. It features a plurality of tooth-shaped cutting edges formed in a cross ridge line portion between a rake face and flanks on the cutting side face. This design provides at least one finishing cutting edge for transferring the shape of a screw and at least one roughing cutting edge smaller than the finishing cutting edge. The finishing cutting edge includes a first flank and a second flank with a larger clearance angle, arranged sequentially from the rake surface toward the lower surface of the insert.
Career Highlights
Eiichi Nunokawa is currently employed at Tungaloy Corporation, where he continues to innovate in the field of cutting tools. His work has significantly impacted the manufacturing industry, particularly in threading applications.
Collaborations
Nunokawa has collaborated with notable coworkers such as Daisuke Yoshiba and Atsushi Ogawa, contributing to advancements in their shared field of expertise.
Conclusion
Eiichi Nunokawa's contributions to cutting tool technology through his patents demonstrate his commitment to innovation and efficiency in manufacturing processes. His work continues to influence the industry positively.