Tool holder having integrally formed anti-vibration component and cutting tool provided with tool holder
US-10500648-B1 · Dec 10, 2019 · US
Rotary cutting tool with tunable vibration absorber assembly for suppressing torsional vibration
US11090737B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11090737-B2 |
| Application number | US-201916555412-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 29, 2019 |
| Priority date | Aug 29, 2019 |
| Publication date | Aug 17, 2021 |
| Grant date | Aug 17, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
A rotary cutting tool includes a tool body including a chip flute portion having a plurality of helical chip flutes separated by lobes. In one aspect, a tunable vibration absorber assembly is disposed within a cavity formed in the chip flute portion. In another aspect, the tunable vibration absorber assembly is disposed within a cavity of a replaceable cutting head. In each aspect, the tunable vibration absorber assembly includes one or more tunable absorber masses, a resilient material between the one or more absorber masses and the cavity, and one or more connecting members for preventing relative angular displacement of the one or more tunable absorber masses. The one or more tunable absorber masses are suspended only by the resilient material, thereby enabling the tunable vibration absorber assembly to be tuned to a desired frequency for suppressing torsional vibration of the rotary cutting tool during a cutting operation.
First claim
Opening claim text (preview).
What is claimed is: 1. A rotary cutting tool, comprising: a tool body including a chip flute portion having a plurality of helical chip flutes separated by lobes; and a tunable vibration absorber assembly disposed within a cavity formed in the chip flute portion, the tunable vibration absorber assembly comprising at least two tunable absorber masses, a resilient material between the at least two absorber masses and the cavity, and one or more connecting members for preventing relative angular displacement between the at least two tunable absorber masses about a central, longitudinal axis of the cutting tool, wherein the one or more connecting members do not contact the tool body to enable the at least two tunable absorber masses to be suspended only by the resilient material, thereby enabling the tunable vibration absorber assembly to be tuned to a desired frequency for suppressing torsional vibration of the rotary cutting tool during a cutting operation. 2. The rotary cutting tool of claim 1 , wherein the at least two tunable absorber masses have a fan-shaped cross-section. 3. The rotary cutting tool of claim 1 , wherein the at least two tunable absorber masses have a circular-shaped cross-section. 4. The rotary cutting tool of claim 1 , wherein the at least two tunable absorber masses are disposed within each lobe of the chip flute portion. 5. The rotary cutting tool of claim 1 , wherein the at least two tunable absorber masses are made of a material having a density equal to or greater than the tool body. 6. The rotary cutting tool of claim 1 , wherein the desired frequency corresponds to a first natural frequency of a torsional vibration mode of the rotary cutting tool. 7. The rotary cutting tool of claim 1 , wherein the tunable vibration absorber assembly is formed by additive manufacturing.
Assignees
Inventors
Classifications
Connections between shanks and removable cutting heads · CPC title
Drilling tools comprising cutting inserts · CPC title
with exchangeable cutting insert · CPC title
Process efficiency · CPC title
- B23B51/00Primary
Tools for drilling machines · CPC title
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Frequently asked questions
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- What does patent US11090737B2 cover?
- A rotary cutting tool includes a tool body including a chip flute portion having a plurality of helical chip flutes separated by lobes. In one aspect, a tunable vibration absorber assembly is disposed within a cavity formed in the chip flute portion. In another aspect, the tunable vibration absorber assembly is disposed within a cavity of a replaceable cutting head. In each aspect, the tunable …
- Who is the assignee on this patent?
- Kennametal Inc
- What technology area does this patent fall under?
- Primary CPC classification B23B51/00. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 17 2021 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).