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1. 发明授权

US11919093B2 Machine tool 有权
公开(公告)号：US11919093B2
公开(公告)日：2024-03-05
申请号：US17277847
申请日：2019-09-24
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Shuichi Watabe
IPC分类号： B23Q41/02 , B23B3/30 , B23B7/06
CPC分类号： B23B3/30 , B23B7/06 , B23Q41/02
摘要： A machine tool includes a plurality of modules, and a control means for controlling operation of the modules, wherein the plurality of modules include a fixed module and two movable modules. The control means includes a restriction means for restricting the movement of the two movable modules for allowing only one of the movable modules to be moved to a facing position facing the fixed module; and a determination means for determining the movable module to be moved to the facing position. The control means is configured to control the operation of the plurality of modules so that, when the operation under cooperation of the fixed module and one of the movable modules has been completed, the restriction means releases the restriction of the movement of the other movable module to the facing position.

2. 发明公开

US20230286058A1 MACHINE TOOL 审中-公开
公开(公告)号：US20230286058A1
公开(公告)日：2023-09-14
申请号：US18021142
申请日：2021-07-29
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Kazutoshi KITAZAWA
IPC分类号： B23B29/24 , B23B3/16
CPC分类号： B23B29/242 , B23B3/161
摘要： An automatic lathe includes a front main spindle holding a workpiece and a turret including a peripheral surface, the peripheral surface being divided into a plurality of turret surfaces, tools being mounted on the turret surfaces, the turret machining the workpiece with any of the tools selected by turning about a Z axis, wherein at least one turret surface of the turret surfaces of the turret has a distance from the Z axis shorter than that of the other turret surfaces.

3. 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.

4. 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.

5. 发明申请

US20210346964A1 MACHINE TOOL 有权
公开(公告)号：US20210346964A1
公开(公告)日：2021-11-11
申请号：US17277847
申请日：2019-09-24
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Shuichi WATABE
IPC分类号： B23B3/30 , B23B7/06
摘要： A machine tool includes a plurality of modules, and a control means for controlling operation of the modules, wherein the plurality of modules include a fixed module and two movable modules. The control means includes a restriction means for restricting the movement of the two movable modules for allowing only one of the movable modules to be moved to a facing position facing the fixed module; and a determination means for determining the movable module to be moved to the facing position. The control means is configured to control the operation of the plurality of modules so that, when the operation under cooperation of the fixed module and one of the movable modules has been completed, the restriction means releases the restriction of the movement of the other movable module to the facing position.

6. 发明申请

US20210299732A1 ROD MEMBER FEEDING DEVICE, MACHINE TOOL INCLUDING THE ROD MEMBER FEEDING DEVICE AND CONTROL METHOD FOR THE ROD MEMBER FEEDING DEVICE 有权
公开(公告)号：US20210299732A1
公开(公告)日：2021-09-30
申请号：US17192406
申请日：2021-03-04
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Kiyohiko WATANABE , Takanori SHINOHARA , Kenji SHIMIZU
IPC分类号： B21D43/00 , B21C51/00
摘要： To provide a rod member feeding device that reduces the load on a spindle chuck and a finger chuck when a rod member is positioned, as well as providing a machine tool provided with the rod member feeding device, and a control method for the rod member feeding device. A rod member feeding device includes: a feed rod for supplying a rod member to a spindle; a servomotor for moving the feed rod along the axial direction of the spindle; and a control device (exemplified with a motor control device and a control device) for controlling the driving of the servomotor. The control device calculates a deviation between a command position based on an advance amount of the feed rod and the actual position of the feed rod that has been actually advanced by the driving of the servomotor, and controls the driving of the servomotor based on the magnitude of the deviation.

7. 发明授权

US11033995B2 Coolant coupling device 有权
公开(公告)号：US11033995B2
公开(公告)日：2021-06-15
申请号：US16466764
申请日：2017-11-15
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Kazuyuki Izumi
IPC分类号： B23Q11/10 , B23Q11/12 , B23B29/24 , B24B55/02
摘要： A coolant coupling device (20) includes: a cylinder chamber (25) provided for a support member (2) for a tool rest (4) in a machine tool and supplied with coolant; a piston (P) movably arranged in the cylinder chamber (25); and a coolant supply flow channel (30) provided for the piston (P) for passing coolant therethrough. The piston (P) is driven by the coolant supplied to the cylinder chamber (25) so that an outlet (32) of the coolant supply flow channel (30) is connected to a coolant inlet port (10) of the tool rest (4) to supply the coolant to the tool rest (4). The piston (P) comprises a cylindrical projection (29) protruding toward and into the cylinder chamber (25), and the coolant supply flow channel (30) has an inlet (34) that opens at an outer peripheral surface of the cylindrical projection (29).

8. 发明授权

US10946450B2 Machine tool 有权
公开(公告)号：US10946450B2
公开(公告)日：2021-03-16
申请号：US16328586
申请日：2017-06-19
申请人： CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Tomonori Maehara
IPC分类号： B23B3/16 , B23B29/24 , B23B3/06
摘要： An automatic lathe includes a positioning block that positions a rod material, the rod material projecting from a main spindle contacting the positioning block, and a sensor that moves in a direction intersecting with a shaft center C direction of the main spindle to detect a cut off condition of the rod material. The positioning block includes a groove that allows movement of the sensor, and moves in the same direction as a movement direction of the sensor between a position that contacts the rod material and a position that has no contact with the rod material. The sensor moves along the path in the position that has no contact with the rod material.

9. 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.

10. 发明授权

US10671046B2 Method and apparatus for applying vibration and machining an object 审中-公开
公开(公告)号：US10671046B2
公开(公告)日：2020-06-02
申请号：US15522821
申请日：2014-11-26
申请人： Mitsubishi Electric Corporation , CITIZEN WATCH CO., LTD. , CITIZEN MACHINERY CO., LTD.
发明人： Mitsuo Watanabe , Masakazu Sagasaki , Hitoshi Matsumoto , Takanori Shinohara , Kazuhiko Sannomiya , Yuki Hirata
IPC分类号： G05B19/402 , G05B19/4093 , B23Q5/50 , B23Q17/12 , B23B1/00 , B23Q15/013 , G05B19/404
摘要： A numerical control device is for machining a machining object by moving a tool and the machining object relative to each other along a movement path while applying vibration, by use of a drive axis provided for the tool or the machining object. The device includes a storage unit that holds an invalid frequency region, and a vibration condition determining unit to determine a frequency for the vibration, based on a rotational speed of a main shaft for rotating the machining object, a number of vibrations of the vibration in each one rotation of the main shaft, and the invalid frequency region.

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