Cutting tool having adjustable insert cutting angle
US-9216458-B2 · Dec 22, 2015 · US
End mill and drilling method
US2020406377A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020406377-A1 |
| Application number | US-202016847943-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 14, 2020 |
| Priority date | Jun 28, 2019 |
| Publication date | Dec 31, 2020 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
According to one implementation, an end mill for orbital drilling includes: a shank; a first cutting edge formed in a peripheral portion of the shank; and a second cutting edge formed in a bottom portion of the shank. At least a chamfered edge is formed on a first ridgeline between a first rake face and a first flank of the first cutting edge.
First claim
Opening claim text (preview).
What is claimed is: 1 . An end mill for orbital drilling by which a workpiece is drilled by feeding a tool, in a tool axis direction offset to a central axis of a hole to be drilled, while rotating the tool around the tool axis direction and rotating the tool around the central axis of the hole, the end mill comprising: a shank; a first cutting edge formed in a peripheral portion of the shank; and a second cutting edge formed in a bottom portion of the shank, wherein at least a chamfered edge is formed on a first ridgeline between a first rake face and a first flank of the first cutting edge. 2 . The end mill according to claim 1 , wherein the chamfered edge has an angle more than 0° and less than 30° to a cutting direction to the workpiece. 3 . The end mill according to claim 1 , wherein the chamfered edge has a width not more than 150 μm. 4 . The end mill according to claim 1 , wherein a first honed edge is formed in a first flank side of the first ridgeline while the chamfer is formed in a first rake face side of the first ridgeline. 5 . The end mill according to claim 4 , wherein the first honed edge has a radius not less than 10 μm and not more than 30 μm. 6 . The end mill according to claim 1 , wherein a second honed edge is formed on a second ridgeline between a second rake face and a second flank of the second cutting edge. 7 . The end mill according to claim 6 , wherein the second ridgeline has no chamfered edge. 8 . A drilling method comprising: producing a drilled product by orbital drilling of the workpiece using the end mill according to claim 1 . 9 . The end mill according to claim 2 , wherein the chamfered edge has a width not more than 150 μm. 10 . The end mill according to claim 2 , wherein a first honed edge is formed in a first flank side of the first ridgeline while the chamfer is formed in a first rake face side of the first ridgeline. 11 . The end mill according to claim 3 , wherein a first honed edge is formed in a first flank side of the first ridgeline while the chamfer is formed in a first rake face side of the first ridgeline. 12 . The end mill according to claim 9 , wherein a first honed edge is formed in a first flank side of the first ridgeline while the chamfer is formed in a first rake face side of the first ridgeline. 13 . The end mill according to claim 2 , wherein a second honed edge is formed on a second ridgeline between a second rake face and a second flank of the second cutting edge. 14 . The end mill according to claim 3 , wherein a second honed edge is formed on a second ridgeline between a second rake face and a second flank of the second cutting edge. 15 . The end mill according to claim 4 , wherein a second honed edge is formed on a second ridgeline between a second rake face and a second flank of the second cutting edge. 16 . The end mill according to claim 5 , wherein a second honed edge is formed on a second ridgeline between a second rake face and a second flank of the second cutting edge. 17 . The end mill according to claim 9 , wherein a second honed edge is formed on a second ridgeline between a second rake face and a second flank of the second cutting edge. 18 . A drilling method comprising: producing a drilled product by orbital drilling of the workpiece using the end mill according to claim 2 . 19 . A drilling method comprising: producing a drilled product by orbital drilling of the workpiece using the end mill according to claim 3 . 20 . A drilling method comprising: producing a drilled product by orbital drilling of the workpiece using the end mill according to claim 4 .
Assignees
Inventors
Classifications
- B23C5/10Primary
Shank-type cutters, i.e. with an integral shaft · CPC title
Bevelled cutting edges · CPC title
Orbital drilling, i.e. use of a milling cutter moved in a spiral path to produce a hole · CPC title
Curved cutting edges · CPC title
positive · CPC title
Patent family
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2020406377A1 cover?
- According to one implementation, an end mill for orbital drilling includes: a shank; a first cutting edge formed in a peripheral portion of the shank; and a second cutting edge formed in a bottom portion of the shank. At least a chamfered edge is formed on a first ridgeline between a first rake face and a first flank of the first cutting edge.
- Who is the assignee on this patent?
- Subaru Corp
- What technology area does this patent fall under?
- Primary CPC classification B23C5/10. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Dec 31 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).