公开(公告)号：US11161209B2

公开(公告)日：2021-11-02

申请号：US16794485

申请日：2020-02-19

申请人： FANUC CORPORATION

发明人： Gaku Isobe ,  Yoshihiro Watanabe

IPC分类号： B23Q3/157 ,  G05B19/4067 ,  B23Q3/155 ,  B23Q3/16

摘要： A machine tool includes a motor configured to rotate a spindle, a tool magazine holding a plurality of tools, and a controller. The controller has a storage unit storing motor information indicating that the motor is a synchronous motor. When the machine tool stops, while a tool exchange process is carried out, due to electric power outage, operation of a stop button, a value of a drive current of the motor, or a value output from the sensor, the controller uses a command for the synchronous motor, based on the motor information, as a part of a series of commands for recovery of the machine tool, where the tool exchange process is a process in which a tool attached to the spindle is changed with one of the plurality of tools of the tool magazine.

公开(公告)号：US11619922B2

公开(公告)日：2023-04-04

申请号：US16843741

申请日：2020-04-08

申请人： FANUC CORPORATION

发明人： Gaku Isobe ,  Yoshihiro Watanabe ,  Hideaki Adachi

IPC分类号： G05B19/4063

摘要： An object is to provide a numerical control system of a machine tool which can check a parameter that needs to be adjusted for each of a spindle and a motor. A numerical control system of a machine tool includes a parameter check function unit for checking a drive control parameter of a spindle, and the parameter check function unit includes: an acceleration/deceleration time measurement unit which measures an acceleration/deceleration time that elapses after the spindle receives an acceleration command and/or a deceleration command until the completion of acceleration and/or the completion of deceleration; an acceleration/deceleration time specified value storage unit which stores a specified value of the acceleration/deceleration time that is previously determined for each specification of the machine tool; and a determination unit which compares the acceleration/deceleration time measured with the acceleration/deceleration time measurement unit and the specified value stored in the acceleration/deceleration time specified value storage unit so as to determine whether or not the drive control parameter of the spindle is proper.