End mill machining apparatus, CAM apparatus, NC program, and machining method
US10549359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Feb 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/37355
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An end mill machining apparatus, a CAM apparatus, an NC program, and a machining method which suppress regenerative self-excited vibration and mode-coupling self-excited vibration. An end mill machining apparatus includes an end mill, and a control section for controlling the end mill. The ratio of the protrusion length of the end mill to the diameter of the end mill falls within a range of 5 to 50. The end mill is a variable pitch, uniform helix type or a variable helix type. The control section controls the end mill such that the contact angle between the end mill and a workpiece M1 during machining becomes equal to or smaller than a critical contact angle θlim.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.