Process and device for monitoring the chip-removing treatment of a workpiece
October 17, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAcoustic detection of tool wear and fracture Method and arrangement for determining tool wear Acoustic detection of tool break events in machine tool operations Acoustic monitoring of cutting conditions to detect tool break events Acoustic tool break detection system and method Detector to discriminate between tool break acoustic signatures and spiky noise Detection of tool breaks that cause slowly decreasing cutting noise Cutting tool wear detection apparatus and method Tool break detecting method and system preventing false alarms due to rough surfaces Multi-level tool break detection using multi-mode sensing Patent #: 4918427 InventorsAssigneeApplicationNo. 582870 filed on 10/17/1990US Classes:73/587, Acoustic emission73/104, SURFACE AND CUTTING EDGE TESTING73/660, Rotating machinery or device340/680, Machine tool340/683VibrationExaminersPrimary: Williams, HezronAssistant: Finley, Rose M. Attorney, Agent or FirmForeign Patent References
International ClassG01N 029/14Foreign Application Priority Data1988-09-02 DEAbstractA process and device for monitoring the chip-removing treatment of a workce by analyzing the sound emission detectable on the tool which is transformed into an electrical signal, filtered, and compared with respect to its amplitude determined over a predetermined period of time with a predetermined adaptable threshold value. The constituents contained in the sound emission signal of the continuous basic noise signal resulting from the cutting and friction noise, and of the pulse-type chip-break signals superposed with respect to this with a higher amplitude, are separated and separately analyzed and evaluated. | |
