Title:
工作機械
Document Type and Number:
Japanese Patent JP6603104
Kind Code:
B2
Abstract:
A main spindle controller of a machine tool varies a rotation speed of a main spindle that grips a workpiece to a varied maximum speed higher than a reference rotation speed set value as a set value of a reference rotation speed by a variation width set value as a set value of a variation width or a varied minimum speed lower than the reference rotation speed set value by the variation width set value in units of the tool path. At the same time, the main spindle controller refers to speed condition information that indicates a condition of the preliminarily stored reference rotation speed and variation width assuming that a chatter vibration is to be reduced, and when at least one of the reference rotation speed set value and the variation width set value does not satisfy the condition of the speed condition information.
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| WO/1993/004817 | NUMERICAL CONTROL DEVICE |
| JPH07112324 | TAPPING DEVICE |
| JP2769252 | THREAD CUTTING DEVICE |
Inventors:
Kouhei Nishimura
Application Number:
JP2015219763A
Publication Date:
November 06, 2019
Filing Date:
November 09, 2015
Export Citation:
Assignee:
Okuma Corporation
International Classes:
B23G3/00; B23Q15/12; B23Q15/013; G05B19/416
Domestic Patent References:
| JP2014087888A | ||||
| JP2012088968A | ||||
| JP2014087887A | ||||
| JP2013244576A | ||||
| JP2013063497A | ||||
| JP2012086347A |
Attorney, Agent or Firm:
Yoshiki Ishida
Kiyotaka Sonoda
Kiyotaka Sonoda