The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2015
Filed:
Mar. 23, 2009
Brian Lammering, Thousand Oaks, CA (US);
Robert Weston, Thousand Oaks, CA (US);
Kurt P. Zierhut, Camarillo, CA (US);
Wayne Reilly, Simi Valley, CA (US);
Brian Lammering, Thousand Oaks, CA (US);
Robert Weston, Thousand Oaks, CA (US);
Kurt P. Zierhut, Camarillo, CA (US);
Wayne Reilly, Simi Valley, CA (US);
Haas Automation, Inc., Oxnard, CA (US);
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.