Head of head-replaceable cutting tool, and cutting tool

Patent metadata

Field	Value
Publication number	US-2026091433-A1
Application number	US-202519345765-A
Country	US
Kind code	A1
Filing date	Sep 30, 2025
Priority date	Oct 1, 2024
Publication date	Apr 2, 2026
Grant date	—

Abstract

To provide a head capable of preventing complications of work procedures and increase in work hours to improve productivity by configuring a head-replaceable cutting tool for machining a workpiece. A cutting tool is a head-replaceable cutting tool having a shank and machining a workpiece, wherein a head comprises a mounting portion mounted to the shank, and a mounting hole to which a substantially rod-shaped cutting member is mounted. A central axis of the mounting hole is orthogonal to a fastening direction in which the head is fastened to the shank.

First claim

What is claimed is:

1 . A head of a head-replaceable cutting tool that is configured to have a shank and to machine a workpiece, the head comprising:
a mounting portion configured to be mounted to the shank; and a mounting hole configured to receive a substantially rod-shaped cutting member, wherein a central axis of the mounting hole is orthogonal to a fastening direction in which the head is fastened to the shank.

2 . The head according to claim 1 , further comprising a fastening screw hole formed from a side of the mounting hole so as to communicate with the mounting hole, the fastening screw hole being configured to thereby receive a screw for fixing the cutting member to the head.

3 . The head according to claim 2 , wherein an internal angle α between a central axis of the fastening screw hole and a plane orthogonal to the fastening direction in which the shank and the head are fastened satisfies a relationship expressed by the following expression (1)
0°<α≤90°  (1).

4 . The head according to claim 1 , further comprising a passage provided in the vicinity of the mounting hole and configured to discharge a cutting oil toward the cutting member mounted to the mounting hole.

5 . The head according to claim 4 , wherein the passage is formed as a notch in an opening edge of the mounting hole.

6 . The head according to claim 1 , wherein a portion other than the mounting portion has a substantially rectangular prism shape.

7 . The head according to claim 1 , wherein when the head with the cutting member mounted thereon is fastened to the shank, a cutting edge of the cutting member is positioned on the head side relative to an end surface of the shank.

8 . The head according to claim 1 , wherein the central axis of the mounting hole is positioned within a short-side width of the shank.

9 . A cutting tool comprising the head according to claim 1 .

Assignees

• Tungaloy Corp

Inventors

• Kondou Yuma
• Otsuka Jun

Classifications

• B23B2231/24

  Cooling or lubrication means · CPC title

• B23B29/12 Primary

  Special arrangements on tool holders · CPC title