WO2022065252A1 - 表示装置及び表示方法 - Google Patents
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- WO2022065252A1 WO2022065252A1 PCT/JP2021/034384 JP2021034384W WO2022065252A1 WO 2022065252 A1 WO2022065252 A1 WO 2022065252A1 JP 2021034384 W JP2021034384 W JP 2021034384W WO 2022065252 A1 WO2022065252 A1 WO 2022065252A1
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- 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—Program-control systems
- G05B19/02—Program-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 program 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 program data in numerical form characterised by monitoring or safety
- G05B19/4068—Verifying part program on screen, by drawing or other means
-
- 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—Program-control systems
- G05B19/02—Program-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 program data in numerical form
- G05B19/19—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 program data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
-
- 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—Program-control systems
- G05B19/02—Program-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 program data in numerical form
- G05B19/401—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 program data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
-
- 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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/18—Compensation of tool-deflection due to temperature or force
-
- 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—Program-control systems
- G05B19/02—Program-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 program data in numerical form
- G05B19/4093—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 program data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part program, for the NC machine
-
- 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
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35137—Create part generic, derive from known part or combination of parts
-
- 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
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35143—Reconstruct free form surfaces
-
- 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
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35349—Display part, programmed locus and tool path, traject, dynamic locus
-
- 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
- G05B2219/37—Measurements
- G05B2219/37082—Indicate, point region on path, locus, display path and machining parameters
Definitions
- the present invention relates to a display device and a display method for displaying a machining program and a machining locus in association with each other in a machining machine such as a machine tool.
- Patent Document 1 in the simulation of the machining path of the tool, the machining program and the machining path are displayed in correspondence with each other, the simulation of the machining path is temporarily stopped, and the program step of the machining program is named and programmed.
- the editing / updating work of is made efficient.
- Patent Document 2 the movement of the tool generated by analyzing the NC program and the movement of the tool obtained by actually executing the NC program in the NC device in which the tool is operated by the NC program to perform a predetermined machining on the work. By superimposing and displaying, the NC program was verified and the correct program could be obtained.
- Patent Document 3 even in the case of machining in which the work is rotated and the tool is moved in the horizontal and vertical axes at the same time, the work rotation angle, the work rotation axis center and the tool rotation axis in the graphic coordinates are obtained from the program command value. By calculating the horizontal and vertical distances from the center and displaying the machining path of the tool relative to the work on the graphic screen based on these calculated data, the operation of the tool can be confirmed easily and accurately. I made it possible.
- Patent Document 4 the tool locus during machining and the load magnitude and direction are simultaneously displayed as vectors, and the transition of the load magnitude and direction in the tool path can be visually confirmed, thereby causing an abnormal load. And made it easy to identify the location.
- Japanese Unexamined Patent Publication No. 3-58202 Japanese Unexamined Patent Publication No. 6-59717 Japanese Unexamined Patent Publication No. 8-194514 Japanese Unexamined Patent Publication No. 2014-126939
- the purpose is to display so that the correspondence between a specific part of the machining program and a specific position of the machining locus can be immediately grasped. do.
- the display device of the present disclosure includes a position data acquisition unit for acquiring tool position data, a machining program acquisition unit for acquiring a machining program, and a tool acquired by the position data acquisition unit.
- Tool machining from the association data storage unit that saves the position data and the character string of the machining program acquired by the machining program acquisition unit in a mutually associated state, and the position data of the tool acquired by the position data acquisition unit.
- the machining locus display unit that calculates and displays the locus
- the machining locus selection unit that selects a part of the machining locus from the machining locus of the tool displayed on the machining locus display unit, and the associated data storage unit, the machining locus is said.
- the related part selection part that selects the program block consisting of the character string of the machining program, which is saved in the state associated with a part of the machining locus selected in the selection section, and on the displayed machining program. It is provided with a machining program display unit that displays the program block selected by the related portion selection unit separately from other character strings.
- the display device of the present disclosure it is displayed so that the correspondence between a specific part of the machining program and a specific position of the machining locus can be immediately grasped. Therefore, even if a machining defect occurs, the machining program can be quickly modified and the production can be performed without lowering the machining efficiency.
- FIG. 1 is a block diagram showing the configuration of the display device of the machine tool of the present disclosure.
- the machine tool control device 10 is a device that controls the operation of the machine tool, and includes a control unit (CPU) 11 including a microcomputer and the like, a storage unit 12 including a ROM / RAM, and a transmission / reception unit 13.
- a machining program that gives an operation command to the machine tool is stored in the ROM of the storage unit 12, and the position data of the taught machine tool is stored in the RAM or the like of the storage unit 12.
- the display device 20 is a device that displays a machine tool machining program and a machine tool tool machining locus, and is a display data acquisition unit 21, a storage unit 22 including a ROM / RAM, a data processing / display unit 23, and a transmission / reception unit 24. have.
- the display data acquisition unit 21 is a unit for acquiring data for display from the machine tool control device 10 and the display device 20 which is also a user interface, and is a position data acquisition unit 211, a machining program acquisition unit 212, and a machining locus selection unit. 213 and a program block selection unit 214 are provided.
- the position data acquisition unit 211 is used to process the machine tool tool position data, that is, the tool, from the machine tool control device 10 via the transmission / reception unit 13 of the machine tool control device 10 and the transmission / reception unit 24 of the display device 20. Position data according to the command value in the program is sent.
- the tool position data is data obtained by adding tool information such as the diameter, length, and tip shape of the tool to the position data of the feed shaft.
- the tool position data acquired by the position data acquisition unit 211 is stored in association with the character string and index data of the machining program, and is also used when calculating the machining locus of the tool. ..
- the machine tool control device 10 sends the machining program character string and index data to the machining program acquisition unit 212 via the transmission / reception unit 13 of the machine tool control device 10 and the transmission / reception unit 24 of the display device 20.
- Some machining programs have an index called an N number attached to each program character string (program block) by the program user (machine user, machine maker), and some do not.
- a technique is also known in which a machine tool control device 10 automatically adds an index (for example, a program line number) to a program that has not been indexed by the user.
- the machining locus selection unit 213 data about a specific part selected on the machining locus of the displayed tool is acquired.
- the machining locus selection unit 213 displays the machining locus.
- a part of the data on the machining locus of the selected tool is acquired and stored in the selection data storage unit 222 of the storage unit 22 described later.
- a character string (program block) of the corresponding (associated) machining program is found for a part of the machining locus of the acquired and saved tool, and the data processing / display unit 23 It is displayed on the machining program display unit 233.
- program block selection unit 214 data about a specific character string (program block) selected on the displayed machining program is acquired. Supplementally, when a character string (program block) of interest is selected by the user on the machining program displayed by the machining program display unit 233 described later, the selected program block is selected by the program block selection unit 214. Data is acquired and stored in the selection data storage unit 222 of the storage unit 22 described later. For the acquired and saved program block, as will be described later, a part of the machining locus of the corresponding (associated) tool is found and displayed by the machining locus display unit 232 of the data processing / display unit 23. Will be done.
- the storage unit 22 has a storage device such as a ROM and a RAM, and the ROM and the like have a program (application) for drawing a machining locus of the tool from the position data of the tool and a display form (design) on the display device 20. Data is stored, and various display data acquired by the display device 20 and the like are stored in the RAM and the like.
- the storage unit 22 includes an association data storage unit 221 and a selection data storage unit 222.
- the association data storage unit 221 the position data of the tool acquired by the position data acquisition unit 211 and the program block (the character string of the processing program itself or the index of the processing program) acquired by the processing program acquisition unit 212 are obtained. By storing the data acquired at the same time as a set, they are saved as data associated with each other.
- the selection data storage unit 222 contains data about a part selected on the machining locus of the tool of the machining locus display unit 232 acquired by the machining locus selection unit 213 and machining acquired by the program block selection unit 214. The data about the program block selected on the machining program displayed on the program display unit 233 is saved.
- the data processing / display unit 23 performs various operations and data processing for forming the final display data from the various data acquired by the display data acquisition unit 21, and displays the formed data or the acquired data. Is the part that is displayed as it is. Further, since the user can select the part of interest on the machining locus of the tool or the machining program displayed on the data processing / display unit 23, the data processing / display unit 23 is a user interface. It can be said that it also has a function.
- the data processing / display unit 23 includes a related portion selection unit 231, a processing locus display unit 232, and a processing program display unit 233.
- a part of the machining locus of the tool of interest to the user which is acquired by the machining locus selection unit 213 and saved in the selection data storage unit 222, is saved in the association data storage unit 221.
- Find the program block of the corresponding machining program by referring to the association between the tool position data and the machining program data. Further, the position data of the tool and the machining program stored in the association data storage unit 221 for the program block of interest to the user, which is acquired by the program block selection unit 214 and stored in the selection data storage unit 222. See the data associations to find a portion of the corresponding tool machining trajectory.
- the machining locus display unit 232 the machining locus of the tool calculated based on the position data of the tool acquired by the position data acquisition unit 211 is displayed, and the machining locus of the tool is displayed and found (selected) by the related portion selection unit 231.
- the machining program display unit 233 displays the entire (or large portion) of the machining program acquired by the machining program acquisition unit 212, and the specific program found (selected) by the related portion selection unit 231.
- the block is displayed on the displayed whole (or large part) machining program separately from other parts by reverse display or the like. Further, on the machining program displayed on the machining program display unit 233, the user can select the program block of interest by using, for example, a cursor, and the selected data is the program block selection unit 214. Will be sent to.
- FIG. 2 shows an example of a machine tool 30.
- the display of the machining locus of the tool in the display device 20 of the workpiece 30 is shown in FIG. 3, and the display of the machining program is shown in FIG.
- the three-dimensional machining locus is displayed on the right side, and the two-dimensional machining locus of XY plane view, XZ plane view, and YZ plane view is displayed on the left side in order from the top. Will be done.
- a portion of a specific size range of the machining program consisting of a character string is displayed.
- a method of associating and saving the tool machining locus and the machining program according to the method of acquiring the machining program will be described using the drawing of the tool machining locus display and the machining program display on the display device.
- some machining programs have an index called an N number attached to each program block by the program user (machine user, machine maker), and some do not.
- the display device to acquire the machining program a method of acquiring the data of the program character string (program block) of the machining program at each time when the position data of the tool is sent from the machine tool control device 10 and the position of the tool.
- FIG. 5 shows a method of associating data when the machining program is read together with the position data on the machining locus of the tool and the machining program is acquired. That is, the machine string receives the command position (position data) and the machining program character string (program block) at the acquired data point, and sequentially associates the machining program character string with the position data on the machining locus of the tool. It is stored, and finally the entire machining program is acquired, and the position data on the machining locus of the tool and the program block are saved in an associated state.
- FIG. 6 shows a method of reading and acquiring a machining program separately from the position data on the machining locus of the tool.
- the machine tool receives the index of the machining program at the command position (position data) and the acquired data point, associates the position data on the machining locus of the tool with the index of the machining program, and separately.
- the machining program including the index is read, and the position data on the machining locus of the tool and the corresponding program block are saved in the associated state via the index.
- the method of reading the machining program together with the position data on the machining locus of the tool and acquiring the machining program can correspond to the machining program without an index, and can be said to be more versatile.
- step St1 the tool position data and the machining program are acquired from the machine tool control device
- step St2 the tool position data and the machining program character string are associated with each other and saved
- the tool position data and the machining program may be acquired at the same time, or the tool position data and the machining program index may be acquired at the same time, and the machining program (character string) itself may be acquired. May be obtained separately.
- the position data of the tool and the character string of the machining program are acquired at the same time, the position data of the tool at the time of acquisition and the character string (program block) of the machining program are associated and saved.
- the machining program (character string) itself is acquired separately from the tool position data, the tool position data and machining are stored by associating the tool position data with the machining program index.
- the program is associated. That is, when the tool position data and the machining program are acquired from the machine tool control device, the tool position data and the machining program are stored in association with each other.
- the machining locus of the tool is calculated from the position data of the tool and displayed (step St3).
- the display of the machining locus of the tool has a three-dimensional display of the entire machining locus and a two-dimensional display of a plan view from three directions of upward, forward, and lateral.
- Step St4 For the purpose of displaying the associated part, a: Do you want to know the program block corresponding to a specific part of the machining locus of the tool, that is, select a part of the machining locus and select the corresponding program block. Determining whether to display or b: want to know a specific part of the tool's machining locus corresponding to a particular program block, i.e. select a program block to display a portion of the corresponding machining locus ( Step St4).
- step St4 When a part of the machining locus is selected to display the corresponding program block, that is, when a is selected in step St4, the process proceeds to step St5, and the program block is selected to display a part of the corresponding machining locus.
- step St8 When displaying, that is, when b is selected in step St4, the process proceeds to step St8.
- step St5 the user selects a part of the machining locus on the machining locus of the displayed tool. This is done by the user via a display device (user interface) (for example, by tracing a predetermined range on the machining locus of the tool using a pointer or the like).
- step St6 the program block of the machining program associated with a part of the selected machining locus is selected (step St6), and the selected program block is the reverse display or color of the corresponding character string. It is displayed separately from other character strings on the machining program by displaying with a mark (step St7).
- step St7 the user can grasp the (associated) program block corresponding to the part of the machining locus of the target tool, achieve the purpose, and end this flow.
- step St8 the user selects the program block of interest on the displayed machining program. This is done by the user via a display device (user interface) (for example, by moving the cursor to highlight a predetermined range on the machining program).
- step St9 a part of the machining locus of the tool associated with the selected program block is selected (step St9), and a part of the machining locus of the selected tool is colored in the corresponding portion. It is displayed separately from other parts on the machining locus of the tool by attaching and displaying it (step St10). As a result, the user can grasp the part of the machining locus of the tool corresponding to the target program block, reach the purpose, and end this flow.
- the display device and display method of the present disclosed invention make it easier to understand the relationship between the axis movement of the machine, that is, the movement of the tool and the machining program. Therefore, when a machining defect occurs during a work such as cutting or grinding with a machine tool, it becomes easy to understand in which part of the machining program the machining defect occurred. Therefore, it is expected that the display device and the display method of the present disclosed invention will improve the work efficiency.
- Machine tool control device 11
- Control unit (CPU) 12
- Storage unit (ROM, RAM) 13
- Transmission / reception unit 20
- Display device 21
- Display data acquisition unit 211
- Position data acquisition unit 212
- Machining program acquisition unit 213 Machining locus selection unit
- Program block selection unit 22
- Storage unit (ROM, RAM) 221
- Association data storage unit 222
- Selected data storage unit 23
- Related part selection unit 232
- Processing locus display unit 233
- Processing program display unit 24 Transmission / reception unit 30
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Abstract
Description
11 制御ユニット(CPU)
12 記憶ユニット(ROM,RAM)
13 送受信ユニット
20 表示装置
21 表示データ取得部
211 位置データ取得部
212 加工プログラム取得部
213 加工軌跡選択部
214 プログラムブロック選択部
22 記憶部(ROM,RAM)
221 関連付けデータ保存部
222 選択データ保存部
23 データ処理・表示部(ユーザインターフェース)
231 関連部分選定部
232 加工軌跡表示部
233 加工プログラム表示部
24 送受信部
30 加工物
Claims (8)
- 工具の位置データを取得する位置データ取得部と、
加工プログラムを取得する加工プログラム取得部と、
前記位置データ取得部で取得した工具の位置データと、前記加工プログラム取得部で取得した加工プログラムの文字列とを、相互に関連付けた状態で保存する関連付けデータ保存部と、
前記位置データ取得部で取得した工具の位置データから工具の加工軌跡を計算し表示する加工軌跡表示部と、
前記加工軌跡表示部で表示された工具の加工軌跡から、加工軌跡の一部分を選択する加工軌跡選択部と、
前記関連付けデータ保存部において、前記加工軌跡選択部で選択された加工軌跡の一部分に対して関連付けられた状態で保存されている、加工プログラムの文字列からなるプログラムブロックを選定する関連部分選定部と、
表示されている加工プログラム上で、前記関連部分選定部で選定されたプログラムブロックを、他の文字列と区別して表示する加工プログラム表示部と、
を備える表示装置。 - さらに、加工プログラムの一部のプログラムブロックを選択するプログラムブロック選択部を備え、
前記関連部分選定部で、前記プログラムブロック選択部で選択したプログラムブロックに対して、前記関連付けデータ保存部で関連付けられた状態で保存されている、加工軌跡の一部分を選定し、
前記加工軌跡表示部で表示されている加工軌跡上で、前記関連部分選定部で選定された加工軌跡の一部分を、他の部分と区別して表示する、請求項1に記載の表示装置。 - 前記加工プログラム取得部は、前記位置データ取得部で工具の位置データを取得する時点ごとに、加工プログラムの文字列を順次取得することによって、加工プログラムを取得し、
前記関連付けデータ保存部は、前記位置データ取得部で取得した位置データと、前記加工プログラム取得部で取得した加工プログラムの文字列とを、それぞれの取得時点ごとに相互に関連付けて保存する、
請求項1又は2の表示装置。 - 前記加工プログラム取得部は、前記位置データ取得部で工具の位置データを取得する時点ごとに、加工プログラムのインデックスを取得するとともに、前記位置データ取得部で工具の位置データを取得する時点とは無関係に、別途、加工プログラムを取得し、
前記関連付けデータ保存部は、前記位置データ取得部で取得した位置データと、前記加工プログラム取得部で取得した加工プログラムのインデックスとを、それぞれの取得時点ごとに、相互に関連付けて保存する、
請求項1又は2の表示装置。 - 工具の位置データを取得するステップと、
加工プログラムを取得するステップと、
取得した工具の位置データと加工プログラムの文字列とを、相互に関連付けて保存するステップと、
取得した工具の位置データから工具の加工軌跡を計算し表示するステップと、
表示された工具の加工軌跡の一部分を選択するステップと、
加工軌跡選択部で選択された加工軌跡の一部分に対して、関連付けられた加工プログラムの文字列からなるプログラムブロックを選定するステップと、
表示されている加工プログラム上で、選定されたプログラムブロックを表示するステップと、
を含む表示方法。 - さらに、加工プログラムの一部のプログラムブロックを選択するステップと、
選択されたプログラムブロックに対して、関連付けられた工具の加工軌跡の一部分を選定するステップと、
表示されている加工軌跡上で、選定された工具の加工軌跡の一部分を表示するステップと、
を含む、請求項5に記載の表示方法。 - 前記加工プログラムを取得するステップにおいては、工具の位置データを取得する時点ごとに、加工プログラムの文字列を順次取得することによって、加工プログラムを取得し、
前記関連付けて保存するステップにおいては、取得した工具の位置データと加工プログラムの文字列とを、それぞれの取得時点ごとに相互に関連付けて保存する、
請求項5又は6の表示方法。 - 前記加工プログラムを取得するステップにおいては、工具の位置データを取得する時点ごとに、加工プログラムのインデックスを取得するとともに、工具の位置データを取得する時点とは無関係に、別途、加工プログラムを取得し、
前記関連付けて保存するステップにおいては、取得した工具の位置データと加工プログラムのインデックスとを、それぞれの取得時点ごとに、相互に関連付けて保存する、
請求項5又は6の表示方法。
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| JP2022551962A JP7469492B2 (ja) | 2020-09-24 | 2021-09-17 | 表示装置及び表示方法 |
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