Rotary cutter for machining materials
US12275072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2022 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Jan 20, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23C2250/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Novel endmills are provided. Such endmills have a body with outside diameter (OD), and outer surface, and a longitudinal axis, a plurality of flutes, helical in some embodiments. Flutes include a narrow leading edge land portion with circular segment profile and having flute cutting edge portions along a substantially uniform circumferential location, with an eccentric relief margin rotationally rearward of the narrow leading edge land portions. Face portions are provided with face cutting edge portions, and with a first dish portion adjacent each of the cutting edge portions sloping inwardly and downwardly generally toward a central longitudinal axis at a first dish angle alpha (α). Corner blend portions extend from flute cutting edge portions to the face cutting edge portions. Corner blend portions are provided in a variety of profiles, including an embodiment wherein the profile of the corner blend portions are truncated before the segment of curvature becomes tangential to the face cutting edge portions. In various embodiments, one or more coolant passageways are provided, and in an embodiment, an exit port for coolant is provided at the center of rotation of the end face porti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.