Calibration head for the drilling of shafts
US-2015151373-A1 · Jun 4, 2015 · US
Reamer
US11724323B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11724323-B2 |
| Application number | US-201916973716-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 3, 2019 |
| Priority date | Jun 28, 2018 |
| Publication date | Aug 15, 2023 |
| Grant date | Aug 15, 2023 |
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- Title
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Abstract
Official abstract text for this publication.
A reamer incudes a core and a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material. The core extends from a front end to a rear end. The core is provided with a plurality of flutes from the front end to the rear end. A center-of-gravity adjustment portion, which adjusts a distance from a center of rotation to a center of gravity, is provided at least partially from terminal ends of the plurality of flutes on a rear end side to the rear end of the core. The center-of-gravity adjustment portion causes the deviation of the center of gravity from the center of rotation to be smaller than when no center-of-gravity adjustment portion is provided.
First claim
Opening claim text (preview).
The invention claimed is: 1. A reamer comprising: a core; and a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material, the core extending from a front end to a rear end, the core being provided with a plurality of flutes extending from the front end toward the rear end, a center-of-gravity adjustment portion being provided at least partially from terminal ends of the plurality of flutes on a rear end side toward the rear end of the core, the center-of-gravity adjustment portion causing the distance from the center of rotation to the center of gravity to be smaller than when the center-of-gravity adjustment portion is not provided, wherein the center-of-gravity adjustment portion is a lightened portion provided at a terminal end of one of the plurality of flutes, the lightened portion being a material reduction of a portion of the core. 2. A reamer comprising: a core; and a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material, the core extending from a front end to a read end, the core being provided with a plurality of flutes extending from the front end toward the rear end, a center-of-gravity adjustment portion being provided at least partially from terminal ends of the plurality of flutes on a rear end side toward the rear end of the core, the center-of-gravity adjustment portion causing the distance from the center of rotation to the center of gravity to be smaller than when the center-of-gravity adjustment portion is not provided, wherein the plurality of outer-circumference cutting edges have first to third outer-circumference cutting edges adjacent to each other, and a phase difference between the first and second outer-circumference cutting edges is smaller than a phase difference between the second and third outer-circumference cutting edges, and, wherein the center-of-gravity adjustment portion is provided at a phase corresponding to between the first and second outer-circumference cutting edges.
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- What does patent US11724323B2 cover?
- A reamer incudes a core and a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material. The core extends from a front end to a rear end. The core is provided with a plurality of flutes from the front end to the rear end. A center-of-gravity adjustment portion, which adjusts a distance from a center of rotation to a center of …
- Who is the assignee on this patent?
- Almt Corp
- What technology area does this patent fall under?
- Primary CPC classification B23D77/02. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 15 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).