Controller with coolant monitoring function
AssigneeFanuc Corporation
InventorTakahiro Endou
Life of this patent
Estimating the term…
Abstract
A controller for controlling a machine includes a coolant monitoring function. The controller generates and records history information in which the measurement values of a state of a coolant are associated with time information on the time when the measurement values are measured. Then, a rate of change in a measurement value for a state of the coolant is calculated based on the recorded history information, and a state of the coolant and a countermeasure therefore are determined based on the calculated rate of change in the measurement value.
Claims4
A controller for controlling a machine based on a state of a coolant used for machining by the machine, the controller comprising:
- a storage device configured to record measurement value history information in which a measurement value for a state of the coolant is associated with time information on a time when the measurement value is measured;
- and
- a processor configured to
- control a sensor to measure a measurement value for a state of the coolant to acquire the measurement value from the sensor,
- generate measurement value history information based on the acquired measurement value,
- record the generated measurement value history information in the storage device,
- calculate a rate of change in the measurement value for a state of the coolant based on the measurement value history information recorded in the storage device,
- determine a state of the coolant based on a comparison of the calculated rate of change in the measurement value with a preset predetermined threshold, wherein the measurement value includes at least any one of motor loads of a main shaft and a feed shaft during machining of the machine, vibration during machining of the machine, and surface temperature of a workpiece during machining of the machine,
- determine an operation to be performed based on the determined state of the coolant, and
- perform the determined operation.
Dependencies are inferred from the claim text.