Wayne R Reilly

US Patent:

20090248194, Oct 1, 2009

Filed:

Mar 23, 2009

Appl. No.:

12/409418

Inventors:

Brian Lammering - Thousand Oaks CA, US
Robert Weston - Thousand Oaks CA, US
Kurt P. Zierhut - Camarillo CA, US
Wayne Reilly - Simi Valley CA, US

Assignee:

HAAS AUTOMATION, INC. - Oxnard CA

International Classification:

G05B 13/02

US Classification:

700173, 700180

Abstract:

A cut optimization system controls chatter in a machine tool during a cutting operation. A microphone is configured to capture acoustic noise emitted by the machine tool during the cutting operation and to generate an AC signal corresponding to the captured acoustic noise. A filter is configured to attenuate frequencies of the AC signal outside of a frequency band and a rectifier is configured to rectify the filtered AC signal into a DC component. A controller is configured to compare the DC component with a threshold value and, if the DC component is greater than the threshold, cyclically vary the rotational speed of a spindle in the machine tool from a commanded speed.