Machine tool and parameter adjustment method therefor
AssigneeNakamura-Tome Precision Industry Co., Ltd.
InventorYoshiharu HOSHINO
Life of this patent
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Abstract
A machine tool comprises: a servomotor feeding a workpiece or a tool; a motor control section controlling the servomotor; and a processor connected to the motor control section, in a parameter adjustment mode while rotating a load by the servomotor with a given speed command issued to the motor control section under a condition where torque is limited, the processor calculating load inertia based on the torque and an angular acceleration of the servomotor that is obtained based on an output from the servomotor, calculating a parameter based on the load inertia, and adjusting a control parameter set to the motor control section based on the parameter.
Claims6
A machine tool comprising:
- a servomotor feeding a workpiece or a tool;
- a motor control section controlling the servomotor;
- and
- a processor connected to the motor control section,
- in a parameter adjustment mode while rotating a load by the servomotor with a given speed command issued to the motor control section under a condition where torque is limited, the processor calculating load inertia based on the torque and an angular acceleration of the servomotor that is obtained based on an output from the servomotor, calculating a parameter based on the load inertia, and adjusting a control parameter set to the motor control section based on the parameter.
A parameter adjustment method for adjusting a control parameter of a motor control section controlling a servomotor used in a drive system for a machine tool, the method comprising:
- in a parameter adjustment mode while rotating a load by the servomotor with a given speed command to the motor control section under a condition where torque is limited, calculating load inertia based on the torque and an angular acceleration of the servomotor that is obtained based on an output from the servomotor,
- calculating a parameter based on the load inertia;
- and
- adjusting the control parameter of the motor control section based on the parameter.
Dependencies are inferred from the claim text.