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Title:
CONTROL DEVICE FOR WORKING DEVICE, WORKING DEVICE, CONTROL PROGRAM FOR WORKING DEVICE, CONTROL METHOD FOR WORKING DEVICE, AND WORKING METHOD
Document Type and Number:
WIPO Patent Application WO/2014/098172
Kind Code:
A1
Abstract:
A control device calculates the phase difference in chatter vibration during working on the basis of the detection result of sound produced by working a workpiece by an end mill, increases the number of rotations of the end mill by a predetermined number if the phase difference is smaller than a first phase difference threshold, and decreases the number of rotations of the end mill by a predetermined number if the phase difference is larger than a second phase difference threshold. Further, if the phase difference is between the first phase difference threshold and the second phase difference threshold, the control device finds the resonance frequency of a working device by multiplying a chatter frequency by a correction factor that changes according to the chatter frequency, and calculates the number of rotations of the end mill on the basis of the resonance frequency. Consequently, when the workpiece is worked by the rotation of a working tool, stable working with suppressed chatter vibration becomes possible.

Inventors:
ONO YUJI (JP)
Application Number:
JP2013/084027
Publication Date:
June 26, 2014
Filing Date:
December 19, 2013
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
B23Q15/12
Foreign References:
JP2009291872A2009-12-17
JP2000143022A2000-05-23
JP2012206230A2012-10-25
JP2012196741A2012-10-18
JP2012171058A2012-09-10
JP2007044852A2007-02-22
JP2010105160A2010-05-13
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (JP)
Takaharu Fujita (JP)
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