公开(公告)号：US20240109129A1

公开(公告)日：2024-04-04

申请号：US18479750

申请日：2023-10-02

Applicant: STAR MICRONICS CO., LTD.

Inventor： TAKUJI UCHIYAMA ,  TAKESHI IKEGAYA

IPC: B23B7/12

CPC classification number: B23B7/12

Abstract: A machine tool system of the present invention includes a rotatable spindle capable of releasably gripping a bar, a pusher that biases the bar from a rear end thereof toward a front end thereof to be movable together with the bar in a Z1-axis direction thereof, and an abnormality determining unit that determines whether an abnormality occurs by monitoring movement of the pusher in the Z1-axis direction. The spindle is movable in the Z1-axis direction, and the abnormality determining unit determines that a first abnormality occurs when the moving distance of the spindle differs from the moving distance of the pusher in a state that the spindle grips the bar.

公开(公告)号：US20240131597A1

公开(公告)日：2024-04-25

申请号：US18489273

申请日：2023-10-17

Applicant: STAR MICRONICS CO., LTD.

Inventor： TAKUJI UCHIYAMA ,  KATSUHIRO SHINOMIYA ,  TAKESHI IKEGAYA ,  NORIO KAKU

IPC: B23B1/00 ,  B23B9/08

CPC classification number: B23B1/00 ,  B23B9/08

Abstract: A lathe system includes a spindle capable of gripping a bar and moving back and forth in an axial direction of the bar and a tool post to which a first tool is attached. The lathe system can manufacture a plurality of products having an identical shape from the bar by repeating a machining of the bar, a cutting off of a machined portion of the bar, and a grip change by the spindle, the grip change by the spindle comprising releasing the bar, moving back, and re-gripping the bar at a predetermined gripping position. The lathe system further includes a gripping position selecting unit capable of selecting a special gripping position at which the spindle re-grips the bar when a state of the machine tool system meets a predetermined condition, the special gripping position being different from the predetermined gripping position.

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.

公开(公告)号：US20240227026A9

公开(公告)日：2024-07-11

申请号：US18489273

申请日：2023-10-18

Applicant: STAR MICRONICS CO., LTD.

Inventor： TAKUJI UCHIYAMA ,  KATSUHIRO SHINOMIYA ,  TAKESHI IKEGAYA ,  NORIO KAKU

IPC: B23B1/00 ,  B23B9/08

CPC classification number: B23B1/00 ,  B23B9/08

Abstract: A lathe system includes a spindle capable of gripping a bar and moving back and forth in an axial direction of the bar and a tool post to which a first tool is attached. The lathe system can manufacture a plurality of products having an identical shape from the bar by repeating a machining of the bar, a cutting off of a machined portion of the bar, and a grip change by the spindle, the grip change by the spindle comprising releasing the bar, moving back, and re-gripping the bar at a predetermined gripping position. The lathe system further includes a gripping position selecting unit capable of selecting a special gripping position at which the spindle re-grips the bar when a state of the machine tool system meets a predetermined condition, the special gripping position being different from the predetermined gripping position.

公开(公告)号：US20240058914A1

公开(公告)日：2024-02-22

申请号：US18499842

申请日：2023-11-01

Applicant: STAR MICRONICS CO., LTD.

Inventor： KATSUHIRO SHINOMIYA ,  TAKESHI IKEGAYA ,  SHOTARO KAMO

IPC: B23Q15/013

CPC classification number: B23Q15/013

Abstract: A machine tool capable of facilitating the setting of the vibration cutting conditions. A control unit acquires a feed speed of a object to be fed without a vibration (Fa), a number of rotations of a spindle required for a single cycle of the vibration (K), and a returning amount (R) representing a distance of a returning feed per the single cycle of the vibration. According to the acquired parameters, the control unit decides at least one parameter among a cutting amount (D) representing a distance of a change in a position of the object per the single cycle of the vibration, a cutting feed speed (F) of the object, and a returning feed speed (B) of the object. The control unit controls the position of the object to be fed with the vibration at least according to the decided parameter.