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1. 发明授权

US11446781B2 Control device for machine tool and machine tool 有权
公开(公告)号：US11446781B2
公开(公告)日：2022-09-20
申请号：US16635384
申请日：2018-07-26
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Takaichi Nakaya , Hiroshi Shinohara
IPC分类号： B23Q15/22 , B23Q15/013 , B23B1/00 , G05B19/19 , G05B19/4093 , G05B19/416
摘要： 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.

2. 发明授权

US11224952B2 Machine tool 有权
公开(公告)号：US11224952B2
公开(公告)日：2022-01-18
申请号：US16648230
申请日：2018-10-04
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Takaichi Nakaya
IPC分类号： B23Q15/013 , G05B19/416 , G05B19/4093 , B23Q17/12 , B23Q17/22
摘要： 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.

3. 发明授权

US10744567B2 Control device for machine tool and machine tool 有权
公开(公告)号：US10744567B2
公开(公告)日：2020-08-18
申请号：US15758080
申请日：2016-09-07
申请人： Citizen Watch Co., Ltd. , Citizen Machinery Co., Ltd.
发明人： Kazuhiko Sannomiya , Takaichi Nakaya
IPC分类号： B23B7/00 , B23B25/06 , B23B13/02 , B23Q15/013 , G05B19/4093 , B23Q15/007 , B23B25/02
摘要： The invention provides a control apparatus for a machine tool, which can perform reciprocating vibration in consideration of a vibration frequency, increase flexibility in machining a workpiece, and perform vibration cutting by means of an external spindle or the like without rotating a spindle. The control apparatus and the machine tool include control means. The control means includes an imaginary spindle regarded as a spindle for rotating a workpiece W or a cutting tool. The control means sets the number of rotations of the imaginary spindle and the number of reciprocating vibrations in accordance with a vibration frequency attributable to a cycle during which an operation instruction can be issued.

4. 发明授权

US11517991B2 Machine tool including vibration restriction means 有权
公开(公告)号：US11517991B2
公开(公告)日：2022-12-06
申请号：US16652415
申请日：2018-10-04
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Takaichi Nakaya , Kazuhiko Sannomiya , Hiroshi Shinohara
IPC分类号： B23Q15/013 , G05B19/4093
摘要： A machine tool includes: a cutting tool; rotating means; feeding means; and vibration means for reciprocatingly vibrating the cutting tool and the workpiece relative to each other; wherein the cutting process is carried out by a relative rotation of the workpiece and the cutting tool, and feeding of the cutting tool, to thereby move the cutting tool continuously along a plurality of predetermined movement paths each having a different machining feeding direction. The machine tool further includes vibration restriction means that operates as the movement of the cutting tool changes from one movement path of two consecutive movement paths to the other movement path, for restricting the reciprocating vibration for a predetermined period from the movement starting position of the movement paths, and starting the reciprocating vibration after the lapse of said predetermined period.

5. 发明授权

US10359765B2 Control device for machine tool with multi-system programs 有权
公开(公告)号：US10359765B2
公开(公告)日：2019-07-23
申请号：US15517066
申请日：2015-10-05
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Takaichi Nakaya , Hitoshi Matsumoto
IPC分类号： G05B19/4155 , B23Q39/04 , G05B19/418
摘要： A control device for a machine tool to produce a plurality of different-shaped products efficiently and successively is provided. In the control device, each driving shaft of modules is assigned to different control systems. The device includes a multi-system program storage part for storing a plurality of multi-system programs to machine a workpiece in different shapes, a multi-system program dividing part for dividing the multi-system programs into machining programs, a divided program storage part for storing the divided machining programs individually, a system-based program storage part for storing the machining programs for the respective control systems, and a machining program selection part for selecting the machining program from the divided program storage part in accordance with the machining step to be executed and for storing the selected machining program in the system-based program storage part for the respective control systems.

6. 发明授权

US10293409B2 Machine tool and workpiece processing system 有权
公开(公告)号：US10293409B2
公开(公告)日：2019-05-21
申请号：US15322676
申请日：2015-06-23
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Takaichi Nakaya , Mamoru Kubota , Sakae Nakazawa , Kazuhiko Sannomiya
IPC分类号： B23B3/30 , B23Q39/04 , B23B3/06 , B23B3/34 , B23Q37/00 , B23Q41/02 , B23Q41/04
摘要： In an embodiment, a machine tool includes two fixed modules and two movable modules each of which having a main spindle, a headstock, and a tool post being integrally formed, and a bed on which these are installed. The movable modules are provided on the bed to be movable in the Y-axis direction, the fixed modules are fixed on the bed on the opposite sides of the these movable modules, and a recess is provided next to the fixed module, the recess being formed by cutting out the bed. The movable modules are movable such that the axis lines of the main spindles of the movable modules are aligned with the axis line of the main spindle of the fixed module or the fixed module. The movable module is movable to the opposite position of the recess.

7. 发明申请

US20180345434A1 MACHINE TOOL CONTROL DEVICE AND MACHINE TOOL EQUIPPED WITH SAID CONTROL DEVICE 审中-公开
公开(公告)号：US20180345434A1
公开(公告)日：2018-12-06
申请号：US15761595
申请日：2016-09-07
申请人： Citizen Watch Co., Ltd. , Citizen Machinery Co., Ltd.
发明人： Takaichi Nakaya , Kazuhiko Sannomiya , Hiroshi Shinohara
IPC分类号： B23Q15/013 , B23B1/00
摘要： In a machine tool, under user set conditions, a cutting tool is fed in a feeding direction while the cutting tool is moved repetitively to cut a workpiece smoothly while separating chips easily. In the machine tool and a control apparatus thereof, control means is configured to set the number of rotations of relative rotation for executing machining of a workpiece, and the number of repetitions of repetitive movement during one rotation of the relative rotation in accordance with a repetitive movement frequency attributable to a cycle during which an operation instruction can be issued.

8. 发明授权

US09703282B2 Portable manipulation command input device and apparatus equipped with manipulation command input device 有权
公开(公告)号：US09703282B2
公开(公告)日：2017-07-11
申请号：US14430471
申请日：2013-10-03
申请人： Citizen Watch Co., Ltd. , Citizen Machinery Co., Ltd. , Mitsubishi Electric Corporation
发明人： Shigeo Yanagidaira , Takaichi Nakaya , Hitoshi Matsumoto , Kazuhiko Sannomiya , Shoji Oda
IPC分类号： G05B19/409 , G06F3/041
CPC分类号： G05B19/409 , G05B2219/34456 , G05B2219/36004 , G05B2219/36159 , G06F3/041
摘要： A portable manipulation command input device, including a sub-console panel attachable to and removable from an automatic lathe apparatus main unit, and includes an input unit to receive input of a manipulation command to the automatic lathe apparatus main unit, a display unit to display information on the automatic lathe apparatus main unit, and a radio communication unit to communicate with the automatic lathe apparatus main unit. The sub-console panel includes a detection unit and a control unit formed with the automatic lathe apparatus main unit. The detection unit includes a radio ID tag and a radio ID reader detecting the sub-console panel being placed within a predetermined range of the automatic lathe apparatus main unit. Depending on a detection result by the detection unit, the control unit allows or restricts manipulations of the automatic lathe apparatus main unit, and allows display of the information even when restricting the manipulations.

9. 发明授权

US12090596B2 Control device for machine tool and machine tool 有权
公开(公告)号：US12090596B2
公开(公告)日：2024-09-17
申请号：US17291414
申请日：2019-12-27
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Kazuhiko Sannomiya , Takaichi Nakaya
IPC分类号： B23B25/02 , B23Q5/58
CPC分类号： B23Q5/58
摘要： A control device for a machine tool comprises a control section controlling the relative rotation and feeding of a cutting tool and a material, performing cutting with vibration of the cutting tool relative to the material by combining a forward feed movement in the machining direction, and a return movement in the counter-machining direction. A return movement setting section sets a pulse-like signal including a command for moving a cutting tool in the machining direction and a command for the return movement. A forward feed setting section makes the cutting tool reach a change point by combining the movement in the machining direction on the basis of the return movement setting section and the forward feed movement. A pulse-like signal is formed in sine waveform with an inflection point, and a phase of the inflection point is set to a value different from a phase of the change point.

10. 发明授权

US11338386B2 Friction welding method and machine tool 有权
公开(公告)号：US11338386B2
公开(公告)日：2022-05-24
申请号：US16762502
申请日：2018-10-31
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Takaichi Nakaya
IPC分类号： B23K20/12 , B29C65/06
摘要： Disclosed is a friction welding method including: a heating step wherein, in relation to joining surfaces (S1, S2) defined by opposite end surfaces of a pair of materials (W1, W2), the pair of materials (W1, W2) are moved from a state in which their axes are unaligned with each other, in a direction for aligning the respective axes with each other, to a prescribed position where the joining surfaces (S1, S2) are brought into contact with each other and friction heated; and a pressure contacting step wherein the pair of materials are brought into pressure contact with each other. The method is characterized in that the heating step and the pressure contacting step are carried out while rotating each of the materials (W1, W2) at the same rotation speed in the same direction, as seen from one side in the axial direction.

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