公开(公告)号：US20240342805A1

公开(公告)日：2024-10-17

申请号：US18631468

申请日：2024-04-10

Applicant: STAR MICRONICS CO., LTD.

Inventor： SHOTARO KAMO

IPC: B23B7/12 ,  B23B1/00

CPC classification number: B23B7/12 ,  B23B1/00

Abstract: A technology capable of improving the accuracy of true-circular machining while avoiding an occurrence of intermittent cutting. A control unit of a machine tool determines an intermediate center position (Pi) in the moving direction for each divided rotation angle (E) smaller than a single rotation of the spindle and an intermediate eccentric radius (ri) around the intermediate center position (Pi) according to an initial position (Po) of the cutting edge in contact with the workpiece in the moving direction, the eccentric center position (Pc), and the eccentric radius (rc) to keep the cutting edge in contact with the workpiece as the moving object moves in the moving direction within a predetermined maximum feed speed (F) until a true-circular machining around the eccentric center position (Pc) is complete on the workpiece.

公开(公告)号：US20250076841A1

公开(公告)日：2025-03-06

申请号：US18808802

申请日：2024-08-19

Applicant: STAR MICRONICS CO., LTD.

Inventor： SHOTARO KAMO

IPC: G05B19/29 ,  B23Q15/12

Abstract: Provided is a machine tool with which a load acting on a drive system for driving a drive subject when the drive subject starts to move toward a target position can be reduced. The machine tool includes a guide mechanism for guiding at least one drive subject from among a tool and a workpiece, a servo motor that moves the drive subject guided by the guide mechanism, and a control unit that controls the servo motor so as to move the drive subject from an initial position to the target position. The control unit controls the servo motor so as to apply vibration in which an advancing motion toward the target position and a retreating motion opposite to the advancing motion are performed repeatedly to the drive subject for a set period up to a point at which the drive subject starts to move toward the target position from the initial position.

公开(公告)号：US20240227035A9

公开(公告)日：2024-07-11

申请号：US18536828

申请日：2023-12-12

Applicant: STAR MICRONICS CO., LTD.

Inventor： NOZOMI UMEHARA ,  SHOTARO KAMO

IPC: B23B37/00 ,  B23B29/12

CPC classification number: B23B37/00 ,  B23B29/125

Abstract: A vibration-cutting condition setting device capable of facilitating a selection of a tool and a setting of parameters. The vibration-cutting condition setting device for a machine tool includes a display unit and a control unit. The control unit accepts a setting for controlling an object to be fed with an vibration. The setting includes a feed speed without the vibration (F) of the object, a first parameter (A) regarding a cycle of the vibration, and a second parameter (E) regarding an amplitude of the vibration. The control unit calculates a maximum feed speed (Fmax) of the object according to the feed speed without the vibration (F), the first parameter (A), and the second parameter (E) and then displays a value representing the calculated maximum feed speed (Fmax) on the display unit.

公开(公告)号：US20250076851A1

公开(公告)日：2025-03-06

申请号：US18797107

申请日：2024-08-07

Applicant: Star Micronics Co., Ltd.

Inventor： SHOTARO KAMO

IPC: G05B19/4155 ,  B23Q15/007

Abstract: Provided is a machine tool with which the accuracy of a stop position of a drive subject can be improved in a case where semi-closed loop control is performed. The machine tool includes a guide mechanism for guiding at least one drive subject among the tool and the workpiece, a servo motor that moves the drive subject guided by the guide mechanism, and a control unit that performs semi-closed loop control on the servo motor so as to move the drive subject from an initial position to a target position. The control unit performs the semi-closed loop control so as to apply to movement of the drive subject a vibration component with which, from a midway position between the initial position and the target position to the target position, an advancing motion toward the target position and a retreating motion opposite to the advancing motion are performed repeatedly.

公开(公告)号：US20240131600A1

公开(公告)日：2024-04-25

申请号：US18536828

申请日：2023-12-12

Applicant: STAR MICRONICS CO., LTD.

Inventor： NOZOMI UMEHARA ,  SHOTARO KAMO

IPC: B23B37/00 ,  B23B29/12

CPC classification number: B23B37/00 ,  B23B29/125

Abstract: A vibration-cutting condition setting device capable of facilitating a selection of a tool and a setting of parameters. The vibration-cutting condition setting device for a machine tool includes a display unit and a control unit. The control unit accepts a setting for controlling an object to be fed with an vibration. The setting includes a feed speed without the vibration (F) of the object, a first parameter (A) regarding a cycle of the vibration, and a second parameter (E) regarding an amplitude of the vibration. The control unit calculates a maximum feed speed (Fmax) of the object according to the feed speed without the vibration (F), the first parameter (A), and the second parameter (E) and then displays a value representing the calculated maximum feed speed (Fmax) on the display unit.

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.