Coated tool

Patent metadata

Field	Value
Publication number	US-12427581-B2
Application number	US-202117793675-A
Country	US
Kind code	B2
Filing date	Jan 18, 2021
Priority date	Jan 20, 2020
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A coated tool in a non-limiting embodiment of the present disclosure includes a base and a coating film located on the base. The coated tool includes a first surface, a second surface adjacent to the first surface, and a cutting edge located on at least a part of a ridge part of the first surface and the second surface. The coating film includes an AlTiN film including Ti, Al and N. A first Al ratio and a second Al ratio are 0.7 or more. The first Al ratio is Al/(Al+Ti) at a point located 0.1 mm away from the cutting edge, and the second Al ratio is Al/(Al+Ti) at a point located 0.2 mm away from the cutting edge in the first surface. The second Al ratio is larger than the first Al ratio.

First claim

What is claimed is:

1. A coated tool, comprising a base and a coating film located on the base,
the coated tool comprising:
a first surface,
a second surface adjacent to the first surface, and
a cutting edge located on at least a part of a ridge part of the first surface and the second surface,

wherein
the coating film comprises an AlTiN film comprising Ti, Al, and N;
a first Al ratio and a second Al ratio are 0.7 or more, in which the first Al ratio is Al/(Al+Ti) at a point located 0.1 mm away from the cutting edge, and the second Al ratio is Al/(Al+Ti) at a point located 0.2 mm away from the cutting edge in the first surface; and
the second Al ratio is greater than the first Al ratio,
a third Al ratio and a fourth Al ratio are 0.7 or more, in which the third Al ratio is Al/(Al+Ti) at a point located 0.1 mm away from the cutting edge, and the fourth Al ratio is Al/(Al+Ti) at a point located 0.2 mm away from the cutting edge in the second surface, and
the fourth Al ratio is greater than the third Al ratio.

2. The coated tool according to claim 1 , wherein
the first Al ratio is greater than the third Al ratio, and the second Al ratio is greater than the fourth Al ratio.

3. The coated tool according to claim 1 , wherein
the first surface is a rake surface, and the second surface is a flank surface.

Assignees

• Kyocera Corp
• Univ Tokyo

Inventors

• Tanibuchi Takahito
• Kubo Hayato
• Shimogaki Yukihiro
• Momose Takeshi
• Deura Momoko

Classifications

• C23C16/34 Primary

  Nitrides {(C23C16/303 takes precedence)} · CPC title

• B23B2228/105

  with specified thickness · CPC title

• B23C5/16

  characterised by physical features other than shape · CPC title

• C23C30/005

  on hard metal substrates · CPC title

• B23B27/148 Primary

  Composition of the cutting inserts · CPC title