Radius endmill and machine tool using the same, and designing method and machining method of radius endmill
US12103093B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 8, 2019 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Nov 3, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23C2210/084
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A radius endmill suppressing chatter vibration includes a circular arc edge provided on an outer peripheral side of a distal end portion of a tool body, and a nose (R) angle (θr) that is an angular range in which the circular arc edge is formed in a vertical section including a central axis line of the tool body and which is equal to or less than 30°. The circular arc edge is formed, as a circular arc edge for a bottom surface, from a position having a tangential line in a direction that perpendicularly intersects the central axis line to a side surface in a bottom surface of the distal end portion of the tool body in a vertical section. A nose (R) height (Hr) that is a dimension of the circular arc edge in the direction of the central axis line is equal to or less than 0.75 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.