Chien-Nan Yeh

Title: Innovations by Chien-Nan Yeh

Introduction

Chien-Nan Yeh is a prominent inventor based in Tainan, Taiwan. He has made significant contributions to the field of engineering, particularly in the development of advanced tool holders and spindle shaft devices. With a total of seven patents to his name, Yeh's work showcases his innovative approach to solving complex engineering challenges.

Latest Patents

One of his latest patents is a tool holder having force sensors. This innovative tool holder includes a first connection portion, a second connection portion, a first sensing portion, a second sensing portion, at least one first force sensor, and at least one second force sensor. The first connection portion connects a cutting tool along an axis, while the second connection portion connects a spindle along the same axis. The first sensing portion, which has at least one first hole, connects the first connection portion along the axis. The second sensing portion, having at least one second hole, connects the second connection portion and the first sensing portion. The first force sensor, disposed in the first hole, is designed to sense a torsional force, whereas the second force sensor, located in the second hole, senses a bending force. Notably, the first sensing portion has a bending stiffness greater than that of the second sensing portion.

Another significant patent by Yeh is a spindle shaft device with a torque sensor. This device includes a shaft that extends along an axial direction and comprises a first side portion, a second side portion, and a central portion located between the two side portions. The central portion possesses a central torsional rigidity with respect to the axial direction. The first side portion has a first torsional rigidity, while the second side portion has a second torsional rigidity, both of which are smaller than the central torsional rigidity. The first torque sensor is positioned on the first side portion, and the second torque sensor is located on the second side portion.

Career Highlights

Chien-Nan Yeh is affiliated with the Industrial Technology Research Institute, where he continues to push the boundaries of engineering innovation. His work has not only advanced the field but has also contributed to the development of practical applications in various industries.

Collaborations

Yeh has collaborated with notable colleagues, including Chao-Ta Huang and Chung-Yuan Su. Their combined expertise has fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion