公开(公告)号：US20250050425A1

公开(公告)日：2025-02-13

申请号：US18672086

申请日：2024-05-23

Applicant: ETA SA Manufacture Horlogère Suisse

Inventor： Patric PHAM ,  Christophe DONZÉ

IPC: B23B13/04 ,  B23Q15/013

Abstract: A tool post including a body extending according to an axis A-A, the latter including, at one of its ends, a base for fastening to a numerically-controlled machine tool and, at the other end, a head movable in rotation, the head including at least two tool-holder spindles, each being intended to receive a cutting tool in engagement, the spindles occupying, depending on the angular position of the head, a working position in which they are intended to carry out a machining operation on a workpiece held in position in a fitting or a standby position in which they are withdrawn from the workpiece, each of the spindles being configured to be controlled independently of the other in order to immobilise or drive in rotation the cutting tool carried thereby, irrespective of the position it occupies.

公开(公告)号：US20230376003A1

公开(公告)日：2023-11-23

申请号：US18307063

申请日：2023-04-26

Applicant: OKUMA CORPORATION

Inventor： Takumi HONGO

IPC: G05B19/4065 ,  G05B19/402 ,  B23Q15/013 ,  B23Q17/09

CPC classification number: G05B19/4065 ,  G05B19/402 ,  B23Q15/013 ,  B23Q17/0952

Abstract: A feed axis monitoring device includes a position deviation calculating unit, a machined surface perpendicular direction calculating unit, a position deviation component converting unit, a threshold value calculating unit, and an abnormality determining unit. The position deviation calculating unit calculates a position deviation of the feed axis. The machined surface perpendicular direction calculating unit calculates a direction perpendicular to a machined surface at a time of a position deviation calculation. The position deviation component converting unit converts a position deviation of the feed axis into a component in the perpendicular direction. The threshold value calculating unit calculates a threshold value based on a preset relation between an operating state of the main spindle and the threshold value. The abnormality determining unit determines that the feed axis has an abnormality when the position deviation exceeds the threshold value.

公开(公告)号：US11717926B2

公开(公告)日：2023-08-08

申请号：US17841336

申请日：2022-06-15

Applicant: FANUC CORPORATION

Inventor： Yuutarou Horikawa ,  Masashi Yasuda ,  Kenta Yamamoto

IPC: B23Q15/013 ,  B23Q15/08 ,  B23G11/00 ,  B23Q17/20 ,  B23G1/04

CPC classification number: B23Q15/013 ,  B23G1/04 ,  B23G11/00 ,  B23Q15/08 ,  B23Q17/20

Abstract: To provide a control device for a machine tool capable of performing thread cutting while reducing the load on the machine tool from the oscillating operation, without extending the cycle time, and capable of reliably shredding chips in a case of performing the non-oscillating operation in the present pass after the oscillating operation in the previous pass. A control device for a machine tool includes: an oscillating operation execution determination unit that determines whether to execute an oscillating operation that causes the cutting tool to oscillate in the radial direction of the workpiece; an oscillation command generation unit that generates an oscillation command of the oscillating operation based on a determination result; a control unit that superimposes the oscillation command on a position command of the feed axis to generate a drive command. The oscillating operation execution determination unit determines to intermittently execute the oscillating operation, and the oscillation command generation unit generates an oscillation command so that a non-oscillating cutting portion of a present pass includes a portion at which oscillating cutting was performed in a previous pass, or so that an oscillating cutting portion of the present pass includes a portion at which non-oscillating cutting was performed in the previous pass.

公开(公告)号：US20230241739A1

公开(公告)日：2023-08-03

申请号：US18092805

申请日：2023-01-03

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： RAJA KRISHNAN KOUNTANYA ,  ERIC FROMERTH ,  CHANGSHENG GUO

IPC: B23Q15/12 ,  B23Q15/08 ,  B23Q15/013

CPC classification number: B23Q15/12 ,  B23Q15/08 ,  B23Q15/013

Abstract: A feed rate scheduling method may comprise: receiving an engagement geometry of a subtractive component for use in a computer numerical control (CNC) machining process; receiving a tool path for forming a component from a workpiece via the CNC machining process; calculating a plurality of bending moments of a spindle at various intervals along the tool path; and determining a feed rate schedule for the tool path of the subtractive component based on the plurality of bending moment.

公开(公告)号：US20230072167A1

公开(公告)日：2023-03-09

申请号：US17904685

申请日：2021-02-18

Applicant: FANUC CORPORATION

Inventor： Kenta YAMAMOTO ,  Masashi YASUDA

IPC: B23Q15/013 ,  B23B1/00 ,  B23B25/02 ,  G05B19/4093

Abstract: Provided is a machine tool control device capable of promptly determining a frequency parameter and an amplitude parameter for a desired oscillation instruction enabling shredding of a chip. A machine tool control device 1 performs machining while causing a tool T and a workpiece W to oscillate relative to each other. The machine tool control device 1 is provided with an oscillation instruction calculation unit 113 that calculates an instruction for an oscillating operation; a first oscillation condition determination unit 111 that determines, as a first oscillation condition, one of a frequency parameter constituted of a frequency or a frequency multiplying factor of the oscillation instruction, and an amplitude parameter constituted of an amplitude or an amplitude multiplying factor of the oscillation instruction; and a second oscillation condition calculation unit 112 that calculates, as a second oscillation condition, the other of the frequency parameter and the amplitude parameter on the basis of the first oscillation condition determined by the first oscillation condition determination unit 111.

公开(公告)号：US11583970B2

公开(公告)日：2023-02-21

申请号：US17195841

申请日：2021-03-09

Applicant: Simmons Machine Tool Corporation

Inventor： Michael H. Chu ,  James G. Otton ,  Eric S. Butler

IPC: B23B5/28 ,  B23Q15/013 ,  B60B17/00 ,  B23C3/04

Abstract: A system for reprofiling a wheel set of a railway vehicle allows the center of rotation of the wheel set to move relative to supporting rollers. A cutting tool used to reprofile the wheel profile on a wheel set is moved relative to the center of rotation of the wheel set to maintain a constant distance between the center of rotation and the cutter. The rollers are maintained in a fixed position during the cutting process. The system avoids mechanically forcing a constant location of the wheel set relative to the center of rotation.

公开(公告)号：US11498175B2

公开(公告)日：2022-11-15

申请号：US16487619

申请日：2018-02-21

Applicant: GROB-WERKE GmbH & Co. KG

Inventor： Benjamin Kormann

IPC: B23Q15/22 ,  B23Q15/013 ,  G05B19/19 ,  G05B19/409

Abstract: A control device for controlling a machine tool, wherein the machine tool and the control device are configured such that a tool and/or workpiece disposed on the machine tool can be moved with at least one first speed and at least one second speed. When switching from a movement with the first speed to a movement with the second speed, the tool or the workpiece is at first stopped prior to the execution of the movement with the second speed, if the second speed is greater than the first speed by at least a predetermined factor. The control device has an input device for triggering the movement with the second speed, and the subsequent execution of the movement with the second speed is triggered by an operator input on the input device. A corresponding control method for controlling a machine tool is also described.

公开(公告)号：US11446781B2

公开(公告)日：2022-09-20

申请号：US16635384

申请日：2018-07-26

Applicant: CITIZEN WATCH CO., LTD. ,  CITIZEN MACHINERY CO., LTD.

Inventor： Takaichi Nakaya ,  Hiroshi Shinohara

IPC: B23Q15/22 ,  B23Q15/013 ,  B23B1/00 ,  G05B19/19 ,  G05B19/4093 ,  G05B19/416

Abstract: A control device for a machine tool and a machine tool capable of easily performing cutting with vibration according to the amount of feed is provided. A control device (180) for a machine tool comprises a control means (181) for controlling the relative rotation and feeding of a cutting tool and a material, the control means performing control such that cutting is performed with vibrating the cutting tool relative to the material by combining a forward feed movement in the machining direction, in which the cutting tool machines the material, and a return movement in the counter-machining direction. A return position calculation section (191) for calculating a return position of the cutting tool at time when one vibration is completed on the basis of the number of vibrations and an amount of feed that are predetermined for one rotation of the cutting tool or the material, a forward feed setting section (192) for setting the forward feed movement on the basis of one or more change point setting values that determine a change point from the machining direction to the counter-machining direction, and making the cutting tool reach the determined change point, and a return movement setting means (193) for setting a pulse-like signal that is output as a command for the return movement so that the cutting tool reaches the calculated return position at time when one vibration is completed are included.

公开(公告)号：US11253924B2

公开(公告)日：2022-02-22

申请号：US16498333

申请日：2018-03-28

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Ayako Kitakaze ,  Masahiro Muramatsu ,  Kenji Noguchi

IPC: B23B29/12 ,  B23B1/00 ,  B23Q15/013 ,  B23B25/02

Abstract: A control device for a machine tool and a machine tool, for which settings of the number of vibrations per rotation become easy, is provided. The control device of the machine tool controls a relative rotation between a workpiece and a cutting tool and a relative reciprocal movement between the workpiece and the cutting tool in a feed direction to perform vibration cutting to the workpiece. The control device includes a control section for controlling a spindle headstock, a first tool post, and a second tool post, the workpiece W being installed on the spindle headstock, the first tool post being provided to be reciprocally movable along the feed direction with respect to the spindle headstock and installed with a first cutting tool for cutting the workpiece, and the second tool post being provided to be reciprocally movable along the feed direction with respect to the spindle headstock independently of the first tool post and installed with a second cutting tool for cutting the workpiece.

公开(公告)号：US11224952B2

公开(公告)日：2022-01-18

申请号：US16648230

申请日：2018-10-04

Applicant: CITIZEN WATCH CO., LTD. ,  CITIZEN MACHINERY CO., LTD.

Inventor： Takaichi Nakaya

IPC: B23Q15/013 ,  G05B19/416 ,  G05B19/4093 ,  B23Q17/12 ,  B23Q17/22

Abstract: A machine tool includes: a cutting tool; rotating means; feeding means; vibrating means for reciprocatingly vibrating the cutting tool and the workpiece relative to each another; and amplitude control means for controlling the amplitude of the reciprocating vibration by the vibrating means. The cutting process is carried out by rotation of the workpiece and the cutting tool relative to each other and feeding of the cutting tool accompanied by the reciprocating vibration with said amplitude in the machining feeding direction of the cutting tool, to thereby move the cutting tool along a predetermined movement path relative to the workpiece. The movement path comprises a plurality of divisional paths divided at predetermined coordinate positions on the movement path. The amplitude control means is adapted to set the amplitude individually for each of the divisional paths.