公开(公告)号：US20240066603A1

公开(公告)日：2024-02-29

申请号：US18502535

申请日：2023-11-06

Applicant: STAR MICRONICS CO., LTD.

Inventor： KOICHIRO SHIGAMA ,  TAKESHI IKEGAYA

IPC: B23B1/00 ,  G05B19/402

CPC classification number: B23B1/00 ,  G05B19/402 ,  G05B2219/49108

Abstract: Provided is a machine tool and a method for controlling the machine tool capable of precisely determine a success or a failure of a cut-off. An NC lathe performs a cut-off of a workpiece gripped by a first spindle and a second spindle and then performs a separation movement of the second spindle in a direction separating from the first spindle. The NC lathe includes a movement controlling unit adapted to perform a stop control of the first spindle at a command position of the first spindle during the separation movement of the second spindle and a cut-off success or failure determining unit adapted to monitor a positional deviation of the first spindle during the separation movement of the second spindle to determine a success or a failure of the cut-off, the positional deviation being a difference between the command position and an actual position of the first spindle.