Noritake Co., Ltd.

Noritake Coated Abrasive Co., Ltd.

Koshi Hashimoto

Masayuki Hattori

Takamasa Ishizawa

Yasuhiro Kamiya

Yusuke Oura

A gear-grinding multilayer grindstone includes: a first thread-shaped grindstone and a second thread-shaped grindstone that are fixed to each other, such that the first and second thread-shaped grindstones have a rotational axis that is common to the first and second thread-shaped grindstones; and a thread-shaped groove that is provided in a first outer circumferential surface of the first thread-shaped grindstone and a second outer circumferential surface of the second thread-shaped grindstone. The thread-shaped groove extends continuously over the first outer circumferential surface and the second outer circumferential surface. The second thread-shaped grindstone is constituted by abrasive cloths that are laminated on each other, and has a higher elasticity than the first thread-shaped grindstone.

Growing community of inventors

Miyoshi, Japan

Koshi Hashimoto