Chatter vibration detection method, chatter vibration avoidance method, and machine tool
US9285797B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2011 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | May 5, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/304704
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chatter vibration detection method includes acquiring vibration data of a tool (4) at a time of machining a workpiece at a predetermined sampling period (Δt), calculating an autocorrelation coefficient (Rxx′) corresponding to a time required for a cutting edge (4a, 4b) to contact the workpiece (W) several times based on acquired time series vibration data and calculating a period (Tx) of characteristics of the calculated autocorrelation coefficient (Rxx′), and deciding that chatter vibration occurs when a contact period (T1) at which the cutting edge (4a, 4b) contacts the workpiece (W) is not an integral multiple of the calculated period (Tx).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.