US20150019002A1 - Machine tool - Google Patents

Machine tool Download PDF

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Publication number
US20150019002A1
US20150019002A1 US14/377,405 US201314377405A US2015019002A1 US 20150019002 A1 US20150019002 A1 US 20150019002A1 US 201314377405 A US201314377405 A US 201314377405A US 2015019002 A1 US2015019002 A1 US 2015019002A1
Authority
US
United States
Prior art keywords
block
program
illuminator
machining
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/377,405
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English (en)
Inventor
Noriyuki Asahara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Machinery Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
Citizen Machinery Miyano Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citizen Holdings Co Ltd, Citizen Machinery Miyano Co Ltd filed Critical Citizen Holdings Co Ltd
Assigned to CITIZEN MACHINERY MIYANO CO., LTD, CITIZEN HOLDINGS CO., LTD reassignment CITIZEN MACHINERY MIYANO CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ASAHARA, NORIYUKI
Publication of US20150019002A1 publication Critical patent/US20150019002A1/en
Assigned to CITIZEN MACHINERY CO., LTD. reassignment CITIZEN MACHINERY CO., LTD. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: Citizen Machinery Miyano Co., Ltd.
Assigned to CITIZEN WATCH CO., LTD. reassignment CITIZEN WATCH CO., LTD. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: CITIZEN HOLDINGS, CO., LTD.
Priority to US15/686,587 priority Critical patent/US10481582B2/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4063—Monitoring general control system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
    • B23Q1/0045—Control panels or boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
    • B23Q11/0089—Safety devices protecting the operator, e.g. against accident or noise actuating operator protecting means, e.g. closing a cover element, producing an alarm signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • B23Q11/0891—Protective coverings for parts of machine tools; Splash guards arranged between the working area and the operator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • B23Q17/2404—Arrangements for improving direct observation of the working space, e.g. using mirrors or lamps
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/31—From computer integrated manufacturing till monitoring
    • G05B2219/31379—Master monitors controllers, updates production progress, allocates resources
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34384—Execute next block after predetermined time
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34394—Execute a certain number of program blocks and stop

Definitions

  • This invention relates to a machine tool having a novel means for notifying a machine operator of the completion of a block of a numeric control (NC) program.
  • NC numeric control
  • Japanese laid-open patent application No. 2011-175316 describes a conventional machine tool has a machining chamber for machining a material, an illuminator provided in the machining chamber, and an NC unit for controlling a machining operation on the basis of an NC program.
  • the conventional machine tool has a one-block stop mode in which the NC program is executed for only one block thereof, and then the machine tool stops its operation.
  • the conventional machine tool also has a manual execution unit for manually executing the NC program via a pulse signal generated in response to operation of a manually operated part such as a manual pulse handle, to operate the machine tool.
  • a problem with the above-described conventional machine tool is that, when a worker operates the manually operated part to execute the NC program using the manual execution unit in the one-block stop mode, a notification of the completion of the execution of one block of the NC program is displayed on an operation panel provided outside the machining chamber. Thus, the worker may not immediately notice the completion of execution of one block of the NC program while observing the interior of the machining chamber, and may operate the manual operation part unnecessarily.
  • An object of the invention is to address the above-described problem, and to provide a machine tool whereby a worker operating a manual operation part in the one-block stop mode can notice that one block of a machining program has been executed while observing the interior of a machining chamber
  • a machine tool includes a machining chamber for machining a material, an illuminator provided in the machining chamber, and an NC unit for controlling a machining operation on the basis of an NC program.
  • the NC unit includes a manual execution unit for executing the machining operation via a pulse signal generated in response to operation of a manually operated part, and has a one-block stop mode in which the NC program is executed for one block and then stopped.
  • a notification unit is provided for issuing a notification of completion of executing one block of the NC program while the machining operation is manually executed using the manual execution unit in the one-block stop mode.
  • the notification unit includes the illuminator.
  • the notification unit is configured to issue a notification by changing an illumination state in the machining chamber achieved by the illuminator.
  • the notification unit is configured to reduce the amount of luminescence of the illuminator after one block of the NC program has been executed.
  • the notification unit is configured to blink the illuminator.
  • a worker observing the interior of the machining chamber can easily notice a notification of completion of the execution of one block of the NC program issued via the illuminator.
  • the worker operating the manually operated part in the one-block stop mode can know, without looking at an operation panel provided outside the machining chamber, that one block of the NC program has been executed while observing the action of various action parts in the machining chamber, such as a spindle or a tool post, which should be checked as the worker operates the manually operated part.
  • the notification unit of the machine tool in accordance with the second aspect of the invention is configured to issue a notification by changing the illumination state in the machining chamber achieved by the illuminator, the worker can notice the change of the illumination state in the machining chamber while observing the interior of the machining chamber through a window.
  • the worker operating the manually operated part in the one-block stop mode can know that one block of the NC program has been executed while observing the interior of the machining chamber without looking at the operation panel provided outside the machining chamber.
  • the notification unit of the machine tool according to the third aspect of the invention is configured to reduce the amount of luminescence of the illuminator after one block of the NC program has been executed, the interior of the machining chamber becomes darker when one block of the NC program has been executed. Thus, the worker can easily know that one block of the NC program has been executed.
  • the notification unit of the machine tool is configured to blink the illuminator
  • the illuminator blinks after one block of the NC program has been executed.
  • the blinking of the illuminator also makes it easy for the worker to know that one block of the NC program has been executed.
  • FIG. 1 is a front view schematically illustrating a machine tool as one embodiment of the invention.
  • FIG. 2 is a schematic block diagram of a machine tool as one embodiment of the invention.
  • FIG. 3 is a flow chart illustrating a sample operation of a machine tool as one embodiment of the invention.
  • the machine tool includes a machining chamber for machining a material, an illuminator provided in the machining chamber, and an NC unit for controlling a machining operation on the basis of an NC program, the NC unit a manual execution unit for executing the machining operation via a pulse signal generated in response to operation of a manually operated part, and has a one-block stop mode in which the NC program is executed for one block and then stopped, and a notification unit is provided for issuing a notification of completion of executing one block of the NC program while the machining operation is manually executed using the manual execution unit in the one-block stop mode, and the notification unit includes the illuminator, so that a worker operating a manual pulse handle in the one-block stop mode can know that one block of the NC program has been executed while observing the inside of the machining chamber without looking at an operation panel provided outside the machining chamber.
  • the machine tool 100 includes an operation panel 110 to be operated by a worker, a controller 130 ( FIG. 2 ) including an NC unit, and a machining chamber 160 in which a material, or workpiece, is machined in accordance with an NC program.
  • a manual pulse handle 111 which is one example of a manually operated part, switch buttons 112 , and a monitor 113 , for example.
  • the machining chamber 160 includes a cover 165 , a door 166 , and a window 167 , for example.
  • the interior of the machining chamber 160 houses a spindle 161 , a tool 162 , a back spindle 163 , and an illuminator 164 , for example.
  • the manual pulse handle 111 may be manually rotated by a worker for executing the NC program in accordance with a mode to manually operate the machine tool.
  • Plural switch buttons 112 are provided and may be used for activating the machine tool 100 , stopping the operation of the machine tool 100 , and selecting a mode.
  • the monitor 113 displays current settings and the NC program.
  • the spindle 161 and the back spindle 163 can grip, rotate, or move the workpiece.
  • the tool 162 can perform cutting and other operations on the workpiece.
  • the rotation and movement of the spindle 161 , the back spindle 163 , and the tool 162 are controlled by the controller 130 on the basis of the NC program to machine the workpiece.
  • the illuminator 164 is provided in the machining chamber 160 to illuminate the workpiece, the tool 162 , the spindle 161 , and the back spindle 163 .
  • the cover 165 is provided to cover the machining chamber 160 .
  • the door 166 can be opened or closed as needed.
  • the window 167 is provided on the door 166 at a position such that it enables a worker to see one or more of the workpiece, the tools 162 , the spindle 161 , and the back spindle 163 , in the machining chamber 160 as the worker operates the operation panel 110 .
  • the controller 130 is equipped with a CPU and a RAM (not shown in FIG. 2 ), and includes a manual execution unit 131 for manually executing the NC program via operation of the manual pulse handle 111 , and an automatic execution unit 132 for automatically executing the NC program.
  • the controller 130 has a manual execution mode achieved by the manual execution unit 131 and an automatic execution mode achieved by the automatic execution unit 132 .
  • the manual execution mode and the automatic execution mode can be selected and switched on the operation panel 110 .
  • the manual pulse handle 111 is connected to the controller 130 via a manual pulse generator 120 .
  • the manual pulse generator 120 generates a pulse signal in response to rotational operation of the manual pulse handle 111 .
  • An output pulse signal generated by the manual pulse generator 120 is transmitted to the manual execution unit 131 .
  • the controller 130 is configured so that, when the manual execution mode is selected, the manual execution unit 131 executes the NC program in accordance with a pulse signal from the manual pulse generator 120 to machine a workpiece in the machining chamber 160 .
  • the controller 130 is also configured so that, when the automatic execution mode is selected, the automatic execution unit 132 automatically and sequentially executes the NC program to machine a material in the machining chamber 160 automatically.
  • the controller 130 also has a one-block stop mode in which the NC program is executed for one block and then stopped, and a normal mode in which all blocks of the NC program are executed sequentially.
  • the one-block stop mode and the normal mode can be selected and switched on the operation panel 110 .
  • the controller 130 is configured so as to be able to detect completion of the execution of one block of the NC program.
  • a machining operation automatically stops when one block of the NC program has been executed, and execution of another block of the NC program can be started by operating the switch buttons 112 on the operation panel 110 .
  • a worker can debug the NC program one block at a time and check, for example, the operating condition of the spindle 161 , the back spindle 163 , and the tool 162 .
  • the machine tool 100 further includes a notification unit 140 ( FIG. 2 ) for issuing a notification of the completion of the execution of one block of the NC program in the one-block stop mode.
  • the notification unit 140 includes the illuminator 164 .
  • the notification unit 140 is configured so that the controller 130 changes the amount of luminescence of the illuminator 164 in the machining chamber 160 after detecting the completion of the execution of one block of the NC program. This enables a worker, observing the interior of the machining chamber 160 through the window 167 , to notice the change of the illumination in the machining chamber 164 achieved by the illuminator 164 and thereby know that one block of the NC program has been executed.
  • step S 11 the controller 130 determines whether or not the one-block stop mode is currently selected. If the one-block stop mode is currently selected, the operation proceeds to step S 12 ; otherwise the operation is finished.
  • step S 12 the controller 130 determines whether or not one block of the NC program has been executed. If completion of the execution of one block of the NC program is detected, the operation proceeds to step S 13 ; otherwise step S 12 is repeated until completion of the execution of one block of the NC program is detected.
  • step S 13 the controller 130 changes the amount of luminescence of the illuminator 164 by causing the illuminator 164 to blink, for example.
  • the one-block stop mode can be selected in both the manual execution mode and the automatic execution mode. Particularly, when the one-block stop mode is selected in the manual execution mode, a worker is observing the interior of the machining chamber 160 through the windows 167 , checking the position of the spindle 161 and the tool 162 , for example, as the worker operates the manual pulse handle 111 . Thus, the worker, observing the interior of the machining chamber 160 through the windows 167 , can notice the change of the illumination in the machine chamber 160 and thereby know that one block of the NC program has been executed.
  • the change of the amount of luminescence of the illuminator 164 is achieved, for example, by reducing the amount of luminescence of the illuminator 164 after one block of the NC program has been executed. In this way, because the interior of the machining chamber 160 becomes darker when execution of one block of the NC program has completed, the worker can easily notice the change of the illumination in the machining chamber 160 .
  • the change of the amount of luminescence of the illuminator 164 may also be achieved by blinking the illuminator 164 . In this way, because the illuminator 164 blinks when one block of the NC program has been executed, the worker can easily notice the change of the illumination in the machining chamber 160 .
  • the worker can operates the switch buttons 112 on the operation panel 110 to return the luminescence of the illuminator 164 to the state in which it was prior to completion of the execution of one block of the NC program.
  • the worker When checking the operation of a next block of the NC program, the worker operates the switch buttons 112 as well as the manual pulse handle 111 on the operation panel 110 to start executing the next block of the NC program. In other words, the worker repeats steps S 11 to S 13 .
  • the machine tool 100 includes the machining chamber 160 for machining a material, the illuminator 164 provided in the machining chamber 160 , and the controller 130 , which is an NC unit for controlling a machining operation on the basis of an NC program.
  • the controller 130 includes the manual execution unit 131 for executing the machining operation via a pulse signal generated in response to operation of the manual pulse handle 111 , which is one example of a manually operated part, and has the one-block stop mode in which the NC program is executed for one block and then stopped.
  • the notification unit 140 is provided for issuing a notification of a completion of executing one block of the NC program while the machining operation is executed manually using the manual execution unit 131 in the one-block stop mode.
  • the notification unit 140 includes the illuminator 164 .
  • the notification unit 140 is configured to issue a notification by changing the illumination state in the machining chamber 160 achieved by the illuminator 164 .
  • a worker operating the manual pulse handle 111 in the one-block stop mode can know, without looking at the operation panel 110 provided outside the machining chamber 160 , that one block of the NC program has been executed while observing the action of various action parts in the machining chamber 160 , such as the tool 162 , a tool post holding the tool 162 , the spindle 161 , and the back spindle 163 , or the state of the workpiece, which should be checked as the worker operates the manual pulse handle 111 .
  • the notification unit 140 is configured to reduce the amount of luminescence of the illuminator 164 after one block of the NC program has been executed, the worker can easily know that one block of the NC program has been executed. Similarly, if the notification unit 140 is configured to cause the illuminator 164 to blink, the worker can easily know that the execution of one block of the NC program has been completed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Optics & Photonics (AREA)
  • Numerical Control (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
US14/377,405 2012-02-15 2013-02-05 Machine tool Abandoned US20150019002A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/686,587 US10481582B2 (en) 2012-02-15 2017-08-25 Process for controlling a machine tool

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012030619A JP5918562B2 (ja) 2012-02-15 2012-02-15 工作機械
JP2012-030619 2012-02-15
PCT/JP2013/052559 WO2013121925A1 (ja) 2012-02-15 2013-02-05 工作機械

Related Parent Applications (1)

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PCT/JP2013/052559 A-371-Of-International WO2013121925A1 (ja) 2012-02-15 2013-02-05 工作機械

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US15/686,587 Division US10481582B2 (en) 2012-02-15 2017-08-25 Process for controlling a machine tool

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US20150019002A1 true US20150019002A1 (en) 2015-01-15

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US14/377,405 Abandoned US20150019002A1 (en) 2012-02-15 2013-02-05 Machine tool
US15/686,587 Active 2033-04-13 US10481582B2 (en) 2012-02-15 2017-08-25 Process for controlling a machine tool

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US (2) US20150019002A1 (de)
EP (1) EP2816429B1 (de)
JP (1) JP5918562B2 (de)
KR (1) KR101952111B1 (de)
CN (1) CN104081300B (de)
ES (1) ES2614874T3 (de)
TW (1) TWI559109B (de)
WO (1) WO2013121925A1 (de)

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US10481582B2 (en) 2012-02-15 2019-11-19 Citizen Watch Co., Ltd Process for controlling a machine tool
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CN104081300A (zh) 2014-10-01
JP5918562B2 (ja) 2016-05-18
KR101952111B1 (ko) 2019-02-27
EP2816429B1 (de) 2016-11-23
ES2614874T3 (es) 2017-06-02
US10481582B2 (en) 2019-11-19
EP2816429A4 (de) 2015-10-14
WO2013121925A1 (ja) 2013-08-22
JP2013168008A (ja) 2013-08-29
KR20140124414A (ko) 2014-10-24
US20170364055A1 (en) 2017-12-21
CN104081300B (zh) 2016-08-24
TWI559109B (zh) 2016-11-21
TW201333652A (zh) 2013-08-16

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