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US 2020/0406377 A1Published application
End mill and drilling method
AssigneeSubaru Corporation
InventorDaisuke ISHIMARU
Life of this patent
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Abstract
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.
Claims20
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.
3 more elements
Dependencies are inferred from the claim text.