Vibration diagnosis assistance device, vibration diagnosis assistance method, and machining tool
AssigneeFanuc Corporation
InventorYohei Arimatsu
Life of this patent
Estimating the term…
Abstract
A vibration diagnosis assistance device of an embodiment acquires, for each of a plurality of predetermined rotational speeds, swing frequency characteristics of a rotating shaft when a movable mechanism swings according to a first swing command signal or a second swing command signal in a state where the rotating shaft rotates according to a rotation command signal, and displays the acquired swing frequency characteristics on a display device.
Claims13
A vibration diagnosis support device configured to support diagnosis of vibration of a rotation shaft unit of a machine tool including a numerical control device, the vibration diagnosis support device comprising:
- a movable mechanism installed on the machine tool;
- a mechanism control unit configured to drive the movable mechanism;
- a swing command signal delivery unit configured to deliver, to the mechanism control unit, a first swing command signal in which a frequency thereof changes so as to become higher over time, or a second swing command signal in which a frequency thereof changes so as to become lower over time;
- a rotation shaft control unit configured to rotate a rotation shaft installed on the rotation shaft unit;
- a rotation command signal delivery unit configured to deliver a rotation command signal to the rotation shaft control unit;
- an acquisition unit configured to acquire a swing frequency characteristic of the rotation shaft for each of a plurality of predetermined rotational speeds, at a time when the movable mechanism is swung in accordance with the first swing command signal or the second swing command signal in a state in which the rotation shaft is rotating in accordance with the rotation command signal;
- and
- a display control unit configured to cause a display device to display thereon the swing frequency characteristic acquired by the acquisition unit.
A vibration diagnosis support method for supporting diagnosis of vibration of a rotation shaft unit of a machine tool, the vibration diagnosis support method comprising:
- a rotating step of rotating a rotation shaft installed on the rotation shaft unit, in accordance with a rotation command signal;
- a swinging step of swinging a movable mechanism of the machine tool in accordance with a first swing command signal in which a frequency thereof changes so as to become higher over time, or a second swing command signal in which a frequency thereof changes so as to become lower over time;
- an acquisition step of acquiring a swing frequency characteristic for each of a plurality of predetermined rotational speeds, at a time when the movable mechanism is swung in accordance with the first swing command signal or the second swing command signal in a state in which the rotation shaft is rotating in accordance with the rotation command signal;
- and
- a display control step of causing a display device to display thereon the swing frequency characteristic acquired in the acquisition step.
Dependencies are inferred from the claim text.